Consulta: subjectFacets:"Histopathology"
Registros recuperados: 108
Data/hora: 03/06/2024 04:45:04

La muerte descendente y necrosis floral del zapote mamey (Pouteria sapota (Jacq.) H.E. Moore &amp; Stearn) en Guerrero, México
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Vásquez López, Alfonso.
En México existen aproximadamente 712 especies frutales pertenecientes a 75 familias y 169 géneros, 620 se cultivan en huertos familiares con baja tecnología o sujetas a recolección. Esta es una de las razones por lo que aún no se determina con certeza el potencial de mercado que pueden tener estos frutales en el ámbito nacional o internacional; sin embargo, existen evidencias de su importancia en la industria alimenticia e industrial (Borys y Borys, 2001).   La familia sapotaceae, originaria de áreas tropicales, incluye aproximadamente 450 especies de árboles y arbustos distribuidas desde el sureste de Estados Unidos, México, América Central hasta Las Antillas y de Sudamérica (Paraguay, Uruguay y Chile) (Pennington, 1990). Algunas especies producen frutos...
Tipo: Tesis
Palavras-chave: Zapote-mamey; Muerte descendente; Postulados de Koch; Lasiodiplodia theobromae; Histopatología; Doctorado; Fitopatología; Zapote mamey; Dieback; Koch's postulates; Histopathology.
Ano: 2008
URL: http://hdl.handle.net/10521/1629

Tolerancia de cultivares de mango (Mangifera indica L.) a la proliferación vegetativa y floral (Fusarium spp.) en México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: García López, Elvis.
La proliferación vegetativa y floral (PVF) del mango (Mangifera indica L.) inducida por Fusarium spp. es una de las principales limitantes fitosanitarias en México y el mundo. Con el propósito de identificar cultivares mono y poliembriónicos tolerantes a Fusarium spp. se realizó la presente investigación en un vivero experimental en Huamuxtitlán, Guerrero, México. La patogenicidad se verificó en plantas juveniles sanas de mango al infiltrar una suspensión conidial del hongo (2 x 106 conidios/mL) y reproducir los síntomas típicos de PVF. Una combinación de aislamientos de Fusarium subglutinans, F. proliferatum y F. oxysporum superó en severidad a una cepa de F. oxysporum en los cultivares más susceptibles (Haden y Cotaxtla-1). El tiempo de expresión de...
Palavras-chave: Incidencia; Susceptibilidad; Patogenicidad; Histopatología; Incidence; Susceptibility; Pathogenicity; Histopathology; Fitopatología; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/718

Marchitez del chile poblano (Capsicum annuum L.): identificación molecular del agente causal, detección en semillas, histopatología y alternativas de control.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Rivera Jiménez, Mally Naty.
Con el objetivo de estudiar la marchitez del chile Poblano, se colectaron plantas y frutos  con síntomas de esta enfermedad en tres localidades de San Martín Texmelucan, Puebla.  Durante el ciclo P/V 2007 se evaluaron 5 tratamientos: Glomus intrarradix, Bat Guano,  Agrohomeopatía, Control químico tradicional y testigos, como alternativas para reducir  el daño causado por los patógenos. De este experimento se aislaron de la base del tallo y  cuello de la raíz, cepas patogénicas las cuales se identificaron mediante estudios  filogenéticos y morfológicos como Fusarium oxysporum y F. solani species complexes.  Mediante microscopía de luz se observó que estos aislamientos causaron daño a nivel  histológico en epidermis, parénquima, endodermis y sistema vascular...
Tipo: Tesis
Palavras-chave: Histopatología; Marchitez; Oomycetos; Transmisión; Doctorado; Producción de Semillas; Histopathology; Wilt disease; Oomycetes; Transmission.
Ano: 2009
URL: http://hdl.handle.net/10521/1302

Constitutional and somatic methylation status of DMRH19 and KvDMR in Wilms tumor patients
Provedor de dados: Genetics and Molecular Biology
Autores: Cardoso,Leila C.A.; Castaño,Jair A. Tenorio; Pereira,Hanna S.; Lima,Maria Angélica de F.D.; Santos,Anna Cláudia E. dos; Faria,Paulo S. de; Ferman,Sima; Seuánez,Héctor N.; Nevado,Julián B.; Almeida,José Carlos Cabral de; Lapunzina,Pablo; Vargas,Fernando R.
The most frequent epigenetic alterations in Wilms tumor (WT) occur at WT2, assigned to 11p15. WT2 consists of two domains: telomeric domain 1 (DMRH19) that contains the IGF2 gene and an imprinted maternally expressed transcript (H19) and centromeric domain 2 (KvDMR) that contains the genes KCNQ1, KCNQ1OT1 and CDKN1C. In this work, we used pyrosequencing and MS-MLPA to compare the methylation patterns of DMRH19/KvDMR in blood and tumor samples from 40 WT patients. Normal constitutional KvDMR methylation indicated that most of the epigenetic alterations in WT occur at DMRH19. Constitutional DMRH19 hypermethylation (HM DMRH19) was observed in two patients with Beckwith-Wiedemann syndrome. Pyrosequencing and MS-MLPA showed HM DMRH19 in 28/34 tumor samples:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epigenetic; Histopathology; Methylation; MS-MLPA; Pyrosequencing.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500002

Histopatological effects of bleaching and disease on the coral Siderastrea stellata from coastal reefs of Brazil
Provedor de dados: Iheringia Série Zoologia
Autores: Sassi,Cristiane F. Costa; Farias,Gabriel M. de; Vasconcelos,Amanda de S.; Macedo,Rebeca S. de; França,Jéssica P. de S.; Sassi,Roberto.
ABSTRACT Histological analysis of bleached samples of Siderastrea stellata Verrill, 1868, with white plague disease and with alteration in the color pattern, revealed drastic tissue and cellular disturbances, such as lysis of the external epithelium, hyperplasia of gastrodermis, apoptosis of epithelial cells and zooxanthellae, and degradation of mesenteric filaments and reproductive cells. Fungal hyphae, diatoms, and cyanobacteria were present in diseased samples and colonies with alteration in the color pattern. Furthermore, bleached and diseased samples showed significant reductions in the number of zooxanthellae per 100 µm2 of gastrodermis and significant reductions in the diameters and volumes of stage V oocytes. We found that bleaching events,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian reefs; Coral diseases; Coral bleaching; Histopathology; Cellular disturbances.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100207

Avaliação da virulência de isolados de Corynebacterium pseudotuberculosis em camundongos BALB/c
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: ROSINHA, G. M. S.; MELO, P. R. de; SANTOS, L. R. dos; CARVALHO, C. E. G.; ALVARENGA, L. C. O.; ANDRADE, G. B.; SOARES, C. O.
Corynebacterium pseudotuberculosis é uma bactéria Gram-positiva, agente etiológico da linfadenite caseosa (LC) em pequenos ruminantes e causadora de piogranulomas, linfangite ulcerativa, mastite e dermatite ulcerativa em bovinos, que são doenças de grande relevância médica e veterinária. Esta doença é de difícil controle e a vacinação é a maneira mais eficiente de preveni-la nos rebanhos. Objetivou-se neste estudo selecionar cepas virulentas de C. pseudotuberculosis, a partir de cinco isolados obtidos de caprinos e ovinos, para uso em estudos de desafio em testes de novas vacinas contra linfadenite caseosa em camundongos. Primeiramente, os isolados foram caracterizados bioquimicamente com o kit API Coryne (APIbioMerieux, Inc., La Balme les Grottes, France)...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Corynebacterium Pseudotuberculosis; Histopatologia; Linfadenite Caseosa; Patogenicidade; Caseous lymphadenitis; Virulence; Histopathology.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1106896

Infection rickettsienne de Donax trunculus
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel.
Identification card of the diseases and parasites infection fishes, crustaceans and molluscs, prepared in the framework of the CIEM workgroup on the CIEM workgroup on the pathology and diseases of marine organisms.
Tipo: Text
Palavras-chave: Donax trunculus; Etiologie; Prophylaxie et traitement; Histopathologie; Donax trunculus; Etiology; Control; Histopathology.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/00140/25078/23184.pdf

An infection of Ruditapes decussatus (Bivalvia) by Rickettsia
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Mialhe, Eric; Chagot, Dominique; Boulo, Viviane; Comps, Michel; Ruano, Francisco; Grizel, Henri.
The authors report the presence of a Rickettsia in Ruditapes decussatus from natural populations of the Algarve (Portugal). Light microscopic shows infections of varying importance in gill tissues. Some enclose small procaryotic colonies (cp) scattered in all lamellae; in others, the colonies are scarce and hypertrophic (100 mu m). These different pictures suggest an amplification process. Digestive diverticulae may also be infected, but to a lesser extent. The ultrastructural features of this intravacuolar (mvd: densified vacuolar membrane) procaryote (P) and its multiplication by scission without a complex developmental cycle allows its classification in the order Rickettsiales.
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Pathogens; Histopathology; Pathology.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-3107.pdf

Recherche sur Marteilia maurini n. sp. parasite de la moule Mytilus galloprovincialis Lmk.
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel; Pichot, Yves; Papagianni, Panagiota.
Histological control practiced in 1981 revealed that the mussel Mytilus galloprovincialis is infected by a new parasite Marteilia maurini sp. n. The structure and the cycle of development are described. The particularities of this parasite in the genus Marteilia are given and discussed.
Tipo: Text
Palavras-chave: Marteilia maurini; Mytilus galloprovincialis; New species; Taxonomy; Mussel culture; Histopathology; Histology.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/publication-1895.pdf

Two Vibrio splendidus related strains collaborate to kill Crassostrea gigas: taxonomy and host alterations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Gay, Melanie; Renault, Tristan; Pons, Anne-marie; Le Roux, Frédérique.
For several years, strains phenotypically related to Vibrio splendidus have been associated with mortality outbreaks of molluscs. A former study on Crassostrea gigas demonstrated the genetic diversity of V splendidus strains associated with diseased animals. Another study suggested that different strains may act in an additive/synergistic way leading to higher C. gigas mortality rates. Here, a strain pair (31+32) was characterised at taxonomic and virulence levels. Using a polyphasic approach, these strains were confirmed to be V splendidus-related, without a clear discrimination between V. kanaloae and V. pomeroyi since hybridisation rates with both these strains were above 70%. Following experimental infection of C. gigas by injection in the adductor...
Tipo: Text
Palavras-chave: Histopathology; Molecular taxonomy; Agonism; Vibriosis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-2912.pdf

Histopathological assessment of liver and gonad pathology in continental slope fish from the northeast Atlantic Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Feist, S. W.; Stentiford, G. D.; Kent, Maxxie; Ribeiro Santos, Ana; Lorance, Pascal.
The deep-sea environment is a sink for a wide variety of contaminants including heavy metals and organic compounds of anthropogenic origin. Life history traits of many deep-water fish species including longevity and high trophic position may predispose them to contaminant exposure and subsequent induction of pathological changes, including tumour formation. The lack of evidence for this hypothesis prompted this investigation in order to provide data on the presence of pathological changes in the liver and gonads of several deep-water fish species. Fish were obtained from the north east region of the Bay of Biscay (north east Atlantic Ocean) by trawling at depths between 700 to 1400m. Liver and gonad samples were collected on board ship and fixed for...
Tipo: Text
Palavras-chave: Histopathology; Disease; Bay of Biscay; Neoplasia; Ovotestis; Deep-sea fish.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00252/36370/34910.pdf

Evaluation of toxicity of Deepwater Horizon slick oil on spat of the oyster Crassostrea virginica
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Vignier, Julien; Rolton, Anne; Soudant, Philippe; Chu, Fu-lin E.; Robert, Rene; Volety, Aswani K.
The 2010 explosion of the Deepwater Horizon (DWH) oil rig generated the largest marine oil spill in US history with millions of barrels of crude oil released in the Gulf of Mexico (GoM). The eastern oyster, Crassostrea virginica, is an ecologically and economically important species in the northern GoM. Due to its biological characteristics (sessile, filter feeding), juvenile oysters may have been affected. This study investigated the effects of surface-collected DWH oil prepared as high-energy water-accommodated fraction (HEWAF) on the survival of 2-month-old oyster spat, and evaluated the potential impacts of HEWAF on particle clearance rate and spat tissue. Exposure of oysters to a range of oil/HEWAF (0-7-66-147-908-3450 mu g tPAH50 (sum of 50...
Tipo: Text
Palavras-chave: Oyster spat; Deepwater Horizon oil; Sublethal; Tissue; Inflammatory response; Histopathology.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00425/53615/54548.pdf

Comparison of the effects of the dietary addition of two lactic acid bacteria on the development and conformation of sea bass larvae, Dicentrarchus labrax, and the influence on associated microbiota
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lamari, Faouzi; Castex, Mathieu; Larcher, Thibaut; Ledevin, Mireille; Mazurais, David; Bakhrouf, Amina; Gatesoupe, Joel.
Probiotics may have many effects on health and development of fish larvae. One of the most promising is related to spinal conformation, though the mode of action is not clearly understood. The present study attempted to investigate the effects of two strains of lactic acid bacteria on associated microbiota, histological development and gene expression. Sea bass larvae were fed since 5 dph (day post hatch) with either a standard control diet (Diet C), or the same diet supplemented with Pediococcus acidilactici MA18/5M (Diet P), or with an autochthonous strain of Lactobacillus casei (X2; Diet L). The two lactic acid bacteria were incorporated in the diets at the levels of 106 and 107 CFU (colony forming units) g-1 in two consecutive experiments,...
Tipo: Text
Palavras-chave: Fish larvae; Probiotics; Microbiota; Histopathology; Gene expression; DGGE.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00108/21966/19673.pdf

Effect of fish meal replacement by plant protein sources on non-specific defence mechanisms and oxidative stress in gilthead sea bream (Sparus aurata)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Sitja Bobadilla, A; Pena Llopis, S; Gomez Requeni, P; Medale, Francoise; Kaushik, Sadasivam; Perez Sanchez, J.
Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial. A diet with fish meal (FM) as the sole protein source was compared to diets with 50%, 75% and 100% of replacement (PP50, PP75, and PP100). The possible influence of diets on growth performance, plasma metabolites, gut integrity, liver structure, anti-oxidant and immune status was evaluated. Final body weight was progressively decreased with PP inclusion, but in PP50 and PP75-fed fish, feed efficiency (FE) was significantly improved and specific growth rates remained...
Tipo: Text
Palavras-chave: Gilthead sea bream; Cholesterol; Glutathione; Histopathology; Myeloperoxidase; Complement; Lysozyme; Respiratory burst; Immune response; Growth; Plant proteins; Fish meal.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-3595.pdf

Infection rickettsienne de l'huître plate
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel.
Tipo: Text
Palavras-chave: Ostrea edulis; Maladie; Etiologie; Prophylaxie et traitement; Histopathologie; Ostrea edulis; Disease; Etiology; Control; Histopathology.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/00140/25077/23183.pdf

Virose de l'huître portugaise
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel.
Tipo: Text
Palavras-chave: Virose; Crassostrea angulata; Crassostrea gigas; Etiologie; Prophylaxie et traitement; Histopathologie; Virosis; Crassostrea angulata; Crassostrea gigas; Etiology; Control; Histopathology.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/00140/25076/23182.pdf

Maladie de la glande digestive de l'huître plate
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Comps, Michel.
Tipo: Text
Palavras-chave: Ostrea edulis; Etiologie; Prophylaxie et traitement; Histopathologie; Ostrea edulis; Etiology; Control; Histopathology.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/00140/25079/23187.pdf

Histopathological Effects of Ischemia - Reperfusion on Intestinal Anastomotic Wound Healing in Dogs
Provedor de dados: International Journal of Morphology
Autores: Akinrinmade,J. F; Olatunji-Akioye,A. O.
The histopathological effects of three levels of ischemia-reperfusion (IR) on healing of intestinal anastomotic wound were investigated in dogs. Three groups of dogs in which superior mesenteric artery (SMA) and collaterals were isolated but not occluded (A -control), isolated and occluded immediately distal to the aorta with collateral interruption using an atraumatic arterial clip for fifteen minutes (B) and for forty-five minutes (C) prior to ileal resection and anastomosis after return of normal perfusión in occluded groups was done. Within each group, animals were anaesthesized on third and seventh post-operative day. Grossly, impaired abdominal wound healing, intra-abdominal adhesions and partial and complete anastomotic dehiscence occurred in groups...
Tipo: Journal article
Palavras-chave: Histopathology; Ischemia-reperfusion injury; Intestinal anastomoses; Wound healing.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400020

Gill and Liver Histopathology in Goodea atripinnis Jordan, Related to Oxidative Stress in Yuriria Lake, Mexico
Provedor de dados: International Journal of Morphology
Autores: Ruiz-Picos,R; López-López,E.
In aquatic ecosystems, the complex mixture of pollutants may mediate the formation of free radicals and cause oxidative damage to the biota. Yuriria Lake (a Ramsar site in Central Mexico) receives input of wastewater from its tributaries, agricultural runoff, and municipal discharge. We studied the lipid peroxidation (LPO), antioxidant enzymes (superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx), and histopathology of gill and liver of the native fish Goodea atripinnis in Yuriria Lake. Results were compared to a control group of fish cultivated in the laboratory. LPO, SOD, and CAT showed no significant differences compared to controls, but GPx showed greater and significant differences in both tissues. Three class sizes were...
Tipo: Journal article
Palavras-chave: Mexican wetlands; Oxidative stress; Histopathology; Fish health condition; Liver; Gill.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300060

Diagnosis to Detect Porcine Transmissible Gastroenteritis Virus (TGEV) by Optical and Transmission Electron Microscopy Techniques
Provedor de dados: International Journal of Morphology
Autores: Martins,A. M. C. R. P. F; Bersano,J. G; Ogata,R; Amante,G; Nastari,B. D. B; Catroxo,M. H. B.
The porcine transmissible gastroenteritis is a highly severe contagious disease, caused by virus of the Coronaviridae family, genus Coronavirus. Its epizootic shape can reach a rate of up to 100% mortality in piglets under two weeks of age as a result of severe dehydration. In this study fragments of small intestine and stool samples were collected from 75 autopsied pigs from properties. The samples of the fragments were frozen and sent to the Laboratory of Electron Microscopy, Instituto Biológico, SP, Brazil, for histological and transmission electron microscopic analyses. According to histological H&amp;E technique, atrophy, villous necrosis and destruction of the enterocytes were observed in 35 (46.6%) out of the 75 fragments of the small intestine...
Tipo: Journal article
Palavras-chave: Porcine Transmissible Gastroenteritis; Coronavirus; Histopathology; Transmission Electron Microscopy.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200059

Histological Evaluation of the Effects of Borax Obtained from Various Sources in Different Rat Organs
Provedor de dados: International Journal of Morphology
Autores: Kabu,Mustafa; Tosun,Murat; Elitok,Bülent; Akosman,Murat Sirri.
Boron is an essential element for life and intake via different sources into the body. Because effects of boron and compounds on the body has not been studied enough especially in tissue level, we planned this study to evaluate the effects of borax the most intaken form of boron compound on different intraabdominal organs histologically and also clinically. 42 male rats divided into equal 7 groups and different toxicological doses consistent with its LD50 dose (5000 mg/kg/d) were administered by gavage except control and sham groups. In the study, 2 different kinds of borax one of which was produced for research and the other for agriculture but the same formulation, were used and their effects were also compared. As a result it was found that borax did...
Tipo: Journal article
Palavras-chave: Boron; Borax; Inflammatory bowel disease; Histopathology; Toxicology.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100040

Indigofera suffruticosa Mill (Fabaceae): Hepatic Responses in Mice Bearing Sarcoma 180
Provedor de dados: International Journal of Morphology
Autores: da Silva,Ivanise Brito; Lima,Izabela Rangel; Santana,Marllon Alex Nascimento; Leite,Roberta Maria Pereira; Leite,Sônia Pereira.
Indigofera suffruticosa is a plant generally used to treat infectious and inflammatory processes. This work aims to evaluate the histopathological changes in the liver tissue of mice with Sarcoma 180 after subchronic treatment with aqueous extract obtained by infusion and maceration of Indigofera suffruticosa leaves. Male mice were divided into four groups of six animals: G1, G2 and G3 patients with Sarcoma 180 and Sarcoma 180 G4 without sarcoma. G1 and G2 were treated with infusion mashing respectively (50 mg/kg ip); G3 and G4 controls received saline (15 ml/kg ip). The histopathological and morphometric analysis of liver tissue after subchronic treatment with aqueous extracts by infusion and maceration of the groups G1, G2 and G4 were similar and showed...
Tipo: Journal article
Palavras-chave: Liver; I. suffruticosa; Histopathology; Histomorphometry; Sarcoma 180.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400017

Sesame radiatum Phytoestrogens Stimulate Spermatogenic Activity and Improve Sperm Quality in Adult Male Sprague Dawley Rat Testis
Provedor de dados: International Journal of Morphology
Autores: Shittu,Lukeman, A. J.; Shittu,Remilekun, K.; Adesite,Samson, O.; Ajala,M. Oluwole; Bankole,Munir, A.; Benebo,A. S.; Tayo,A. O.; Ogundipe,Olufemi, A.; Ashiru,Oladapo, A.
Increasing concern has been expressed about the declining sperm count of humans and the potential environmental effects of both synthetic and natural estrogenic endocrine disruptors (EEDs) on human reproductive health in the last few decades. However, due to paucity of knowledge, we evaluate the chronic reproductive toxicity of sesame phytoestrogenic lignans on the male Sprague Dawley (SD) rats' testis. Thirty adult male SD rats weighing 150-200g were divided into three groups. Two treated groups received a daily dose of aqueous leaves extract of Sesamum radiatum at 14.0 mg/kg bw and 28.0mg /kg bw respectively via gastric gavage, while equal volume of normal saline was administered to the control group for six weeks. Seminal analysis and hormonal assay...
Tipo: Journal article
Palavras-chave: Testis; Sesame leaves; Histopathology; Hormonal assay; Seminal analysis; SD Rats.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000300022

Histopathologic Effect of Persea americana Aqueous Leaves Extract on the Liver and Kidney of Weaner Rabbits (California Species)
Provedor de dados: International Journal of Morphology
Autores: Adisa,J. O; Ajayi,Y; Egbujo,E. C.
Persea americana (avocado) is widely grown in parts of Southeastern Nigeria and used as a medicinal plant in the treatment of several ailments by alternative medical practitioners but very little research has been carried out on its pharmacotoxicity. This study therefore intends to study the histopathologic effect(s) of Persea americana aqueous leaf extract on the liver and kidneys of rabbits. Fresh leaves of Persea americana were processed using the Soxhlet extraction to obtain the aqueous extract. Three (3) groups of weaner rabbits namely the control, the recommended dose and the high dose groups were given water, 75mg/kg/ and 150mg/kg per day of the extract respectively for 28 days. The animals were sacrificed, the liver and kidney were harvested, fixed...
Tipo: Journal article
Palavras-chave: Persea Americana; Liver; Kidney; Histopathology.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000400053

Histopathological changes in albino mouse testis induced by the administration of Tityus n. sp. venom
Provedor de dados: Journal of Venomous Animals and Toxins
Autores: PENNA-VIDEAÚ,S.; CERMEÑO-VIVAS,J.; MORENO-MARVAL,M.; QUIROGA-NOTTI,M.
Scorpion envenoming is a public health concern in northeastern Venezuela. Specimens of the genus Tityus are responsible for most of these. In experimental animals, Tityus venom produces histopathological changes in the skeletal muscle and pancreas, but its toxicity to the reproductive system has not been studied. The aim of this work is to describe the histopathological changes in testis and epididymis of albino mice induced by the administration of Tityus n. sp. venom. Sub-lethal doses of venom (3.75 mg/g mouse) were administered intramuscularly (IM) daily for 4 days. On the fifth day, the animals were sacrificed and the testes and epididymes were quickly removed and processed for light microscopy. The venom induced alterations in spermatogenesis. Sertoli...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testis; Sertoli cell; Epididymis; Scorpion; Venom; Mouse; Histopathology.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000200003

Bothrops alternatus ENVENOMING IN YOUNG DOGS
Provedor de dados: Journal of Venomous Animals and Toxins
Autores: PEREZ,O. A. DE; KOSCINCZUK,P.; FLINTA,S. M.; MAIDANA,H. R.; SANCHEZ NEGRETTE,M.
Bothrops alternatus venom was intramuscularly inoculated (3 mg/kg) into 12 dogs, 30 to 65 days old. Spontaneous bleeding commenced twenty minutes later. Blood samples obtained 3 and 20 minutes after venom inoculation presented spontaneous clotting formation. Plasmatic fibrinogen decreased within 3 minutes. Partial thromboplastin time (PTT) and one-stage prothrombin time (PT) were found. Plasma did not coagulate 40 minutes after inoculation. Platelet counts did not vary but their function was altered.  Histopathology pointed out severe muscular necrosis and massive hemorrhage in the inoculation area. Regional ganglia showed intense hemorrhage. The 45 and 65-day-old animals showed alveolar thickening of the septum and generalized congestion, but the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dogs; Bothrops alternatus; Coagulation; Histopathology.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301997000100006

Technetium-99m-labeled deoxynivalenol from Fusarium mycotoxin alters organ toxicity in BALB/c mice by oral and intravenous route
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Chattopadhyay,P; Pandey,A; Goyary,D; Chaurasia,A; Singh,L; Veer,V.
The toxicity of deoxynivalenol, both intravenously and orally, was investigated in male and female BALB/c mice. Technetium-99m (99m Tc)-labeled deoxynivalenol was administered to mice by tail vein injection and orally dosed. Distribution of labeled deoxynivalenol at 26 hours was monitored by gamma-scintigraphy. In the evaluated organs, the accumulation of radioactive deoxynivalenol was correlated with the amount of radioactivity. In addition, the toxicity of deoxynivalenol was measured by biochemical assays followed by histopathological findings. Kidney and hepatic marker enzymes were significantly increased in intravenously administered deoxynivalenol as compared to orally treated mice. Intravenously treated mice showed severe damage in liver and kidney...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Technetium-99m (99mTc); Deoxynivalenol; Biodistribution; Toxicity; Histopathology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000300002

Experimental envenomation with Crotalus durissus terrificus venom in dogs treated with antiophidic serum - part II: laboratory aspects, electrocardiogram and histopathology
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Nogueira,R. M. B.; Sakate,M.; Sangiorgio,F.; Laposy,C. B.; Tostes,R. A.
The present work shows laboratory aspects, electrocardiogram and histopathology results during experimental envenomation by Crotalus durissus terrificus in dogs treated with antiophidic serum. Twenty-one dogs were divided into three groups of seven animals each. Group I received 1mg/kg venom (sc); Group II received 1mg/kg venom (sc), 50mg antiophidic serum (iv) and fluid therapy including 0.9% NaCl solution (iv); and Group III received 1mg/kg venom (sc), 50mg antiophidic serum (iv) and fluid therapy including 0.9% NaCl solution containing sodium bicarbonate diluted to the dose of 4mEq/kg. Urinalysis showed brown urine, proteinuria, occult blood and myoglobinuria. Respiratory acidosis and hypotension were also observed. At the venom inoculation site, there...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crotalus durissus terrificus; Dog; Laboratory aspects; Histopathology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000400011

Clostridium perfringens types A and D associated with enterotoxemia in an 18-month-old goat
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Miyashiro,S.; Nassar,A. F. C.; Del Fava,C.; Cabral,A. D.; Silva,M.
Postmortem examination of a Boer buck that died peracutely revealed bowel and liver diffusely congested and edematous. Kidney was apparently edematous. Clostridium perfringens type A was isolated from bowel and type D from kidney. Microscopic examination revealed large areas of necrosis in the renal cortex and medulla (pulpy kidney disease), hyperemia and centrilobular necrosis of the liver, necrosis of the small-intestine wall, pulmonary edema and congestion, intense hyperemia of the cerebellum, hyperemia and edema of the brain.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goats; Enterotoxemia; Pulpy kidney disease; Clostridium perfringens type A; Clostridium perfringens type D; Histopathology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000400017

Histopathological evaluation in experimental envenomation of dogs with Crotalus durissus terrificus venom
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Sangiorgio,F.; Sakate,M.; Nogueira,R. M. B.; Tostes,R. A.
The present work evaluated histopathological aspects in experimental envenomation of dogs with Crotalus durissus terrificus venom. Twenty-eight mixed breed adult dogs were divided into three groups of seven animals each: Group I - only venom; Group II - venom + 50ml antiophidic serum + fluid therapy; Group III - venom + 50ml antiophidic serum + fluid therapy + urine alkalization. Lyophilized venom of Crotalus durissus terrificus was reconstituted in saline solution and inoculated subcutaneously at the dose of 1mg/kg body weight. Three animals of each group were subjected to euthanasia, and their muscular tissue, brain, spleen, kidneys, heart, lungs, stomach, small and large intestines, and popliteal lymph node fragments were collected for histopathological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histopathology; Crotalus durissus terrificus; Dogs; Treatment; Intoxication.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000100007

Systemic effects induced by intralesional injection of ω-conotoxin MVIIC after spinal cord injury in rats
Provedor de dados: Journal of Venomous Animals and Toxins Including Tropical Diseases
Autores: Oliveira,Karen M; Silva,Carla Maria O; Lavor,Mário Sérgio L; Rosado,Isabel R; Fukushima,Fabíola B; Assumpção,Anna Luiza FV; Neves,Saira MN; Motta,Guilherme R; Garcia,Fernanda F; Gomez,Marcus Vinícius; Melo,Marília M; Melo,Eliane G.
Background:Calcium channel blockers such as conotoxins have shown a great potential to reduce brain and spinal cord injury. MVIIC neuroprotective effects analyzed in in vitromodels of brain and spinal cord ischemia suggest a potential role of this toxin in preventing injury after spinal cord trauma. However, previous clinical studies with MVIIC demonstrated that clinical side effects might limit the usefulness of this drug and there is no research on its systemic effects. Therefore, the present study aimed to investigate the potential toxic effects of MVIIC on organs and to evaluate clinical and blood profiles of rats submitted to spinal cord injury and treated with this marine toxin. Rats were treated with placebo or MVIIC (at doses of 15, 30, 60 or 120...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conus magus; Cone snail; Histopathology; Hematology; Biochemistry.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200311

Histopathological alterations in Astyanax bifasciatus (Teleostei: Characidae) correlated with land uses of surroundings of streams
Provedor de dados: Neotropical Ichthyology
Autores: Nimet,Jardel; Amorim,João Paulo de Arruda; Delariva,Rosilene Luciana.
ABSTRACT This study evaluated gills and liver of Astyanax bifasciatus as histological biomarkers for biomonitoring of streams along areas with different land uses. The fish were collected by electrofishing in six streams in the basin of the lower Iguaçu River. The objective was to correlate the presence and degree of histopathological alterations of gills and liver with the environmental variables among streams along different land uses. The low frequency of histopathological alterations found in fish from the forest streams suggested normal organ functioning. In fish from the rural and urban streams, the histopathological alterations occurred were in higher frequency, indicated light to moderate damage in gills and liver of fish from the rural streams,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomarkers; Fish; Histopathology; Lotic environments; Urban impact.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100216

Studies of Liver of Mice in the Course of an Experimental Infection with Babesia microti. I : Histopathological Changes and Changes in the Glycogen Content
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Kuzna-Grygiel, Wanda; Kolodziejczyk, Lidia.
Palavras-chave: Babesia microti; Liver; Histopathology; Glycogen.
Ano: 2000
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/333

Studies of Liver of Mice in the Course of an Experimental Infection with Babesia microti. Ⅱ : Histopathological Studies on Oxidative and Antioxidative Enzymes
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Kuzna-Grygiel, Wanda; Kolodziejczyk, Lidia.
Palavras-chave: Babesia microti; Liver; Histopathology.
Ano: 2000
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/334

Manual de métodos parasitológicos e histopatológicos en piscicultura
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Keim, Albert.
Recientes problemas provocados por epiemias de infecciones de Ichthyophthirius multifiliie en la cría de bagre negro (Rhandia sapo) cultivado por el Departamento de Acuicultura del INAPE de Uruguay, y el conocimiento de que todos los piscicultores tienen problemas con los parásitos, constituyeron la base y antecedente para el inicio de un programa de investigaciones parasitológicas. Este programa incluyó. 1) Disección de bagres capturados en Laguna de Sauce y colecta de parásitos. 2) Disección de bagres cultivados en el Laboratorio y en los estanques de INAPE, y colecta de parásitos. 3) Identificación de los parásitos recolectados. 4) Elaboración de un manual que recopila los métodos más comunmente utilizados en parasitología e histopatología en la...
Tipo: Report
Palavras-chave: Fish diseases; Parasitic diseases; Fish culture; Parasitology; Histopathology; Manuals; Ichthyophthirius.
Ano: 1982
URL: http://hdl.handle.net/1834/4913

Hepatopancreatitis necrotizante (NHP). Identificación etiológica por métodos histopatológicos y moleculares en el camarón de cultivo Litopenaeus vannamei
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Rubio, M.; Artiles, A.; Silveira, R.; Osmel García; González, N.
Tipo: Journal Contribution
Palavras-chave: Histopathology.
Ano: 2012
URL: http://hdl.handle.net/1834/4657

Bonamia sp. (Protozoa, Haplosporidia) parásito de Ostrea puelchana D’Orbigny, (Mollusca, Bivalvia) en el Golfo San Matías (Patagonia Argentina): Histopatología, identificación e infección
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Kroeck, M.A.
Los moluscos bivalvos son organismos sedentarios que establecen una relación íntima no sólo entre ellos, sino también con el espacio que ocupan y con sus condiciones fisicoquímicas. Sus poblaciones pueden ser hospedadoras de múltiples organismos patógenos (virus,bacterias, hongos, protistas y metazoos), cuya presencia es regulada eficazmente a niveles  infra, meta y suprapoblacionales en ambientes silvestres, no provocando, salvo  excepcionalmente, impactos severos. Los cultivos a escala comercial producen concentraciones de individuos, con la consiguiente alteración del medio y del equilibrio natural en la relación parásito-hospedador, generándose condiciones apropiadas para el desarrollo de enfermedades. Entre los años 1995 y 1996 se instala, en la zona...
Tipo: Theses and Dissertations
Palavras-chave: Fishery biology; Marine molluscs; Parasitology; Protozoan diseases; Histopathology; Spatial distribution; Environmental conditions; Methodology; Examinations.
Ano: 2005
URL: http://hdl.handle.net/1834/5244

Host-parasite relationship during Epistylis sp. (Ciliophora: Epistylididae) infestation in farmed cichlid and pimelodid fish
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Pádua,Santiago Benites de; Martins,Maurício Laterça; Valladão,Gustavo Moraes Ramos; Utz,Laura; Zara,Fernando José; Ishikawa,Márcia Mayumi; Belo,Marco Antonio de Andrade.
Abstract: The objective of this work was to describe the host-Epistylis sp. relationship during infestation on farmed fish. Five Nile tilapia (Oreochromis niloticus) and ten hybrid surubim catfish (Pseudoplatystoma reticulatum x P. corruscans), all diseased, were used for in vivo morphological analysis of sessile peritrichs by contrast microscopy. Fragments of infected tissues were subjected to histological processing and scanning electron microscopy. Epistylis sp. caused hemorrhagic ulcer disease, and cichlids were more prone to develop infestations throughout the body surface due to the attachment of the colonies to the scales, which did not occur with pimelodids. Multifocal granulomatous dermatitis was observed, associated with the hydropic degeneration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oreochromis niloticus; Pseudoplatystoma reticulatum; Pseudoplatystoma corruscans; Histopathology; Pathogenesis; Sessile peritrich.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000500520

The Preventive Effects of Different Doses of Glucomannan on Experimental Aflatoxicosis in Japanese Quails
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Yavuz,O; Özdemir,Ö; Ortatatli,M; Atalay,B; Hatipoglu,F; Terzi,F.
ABSTRACT This experimental study was performed to investigate whether there is a protective effect of different doses of Glucomannan using against aflatoxicosis in Japanese quail, and pathological changes and relative organ weights were compared. In the experiment, 60 one-day old male Japanese quails were used as divided into six different groups. Experimental groups were designated as Control(C), aflatoxin(A), glucomannan(GM), 2-fold dose of glucomannan(2GM), aflatoxin+glucomannan(A+GM) and aflatoxin+2-fold dose of glucomannan(A+2GM). While control group quails fed the standard ration as ad libitum, other groups were fed with the administrations additionally to standard diet respectively; 2mg/kg of aflatoxin to group A, 1g/kg of glucomannan to group GM,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxin; Glucomannan; Histopathology; Quail.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300409

Experimental infection of commercial layers with wild or attenuated Salmonella Gallinarum mutant strains: anatomic pathology, total blood cell count and serum protein levels
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Garcia,KO; Berchieri Jr.,A; Santana,AM; Alarcon,MFF; Freitas Neto,OC; Fagliari,JJ.
The aim of the present study was to comparatively evaluate hemogram, blood serum components and anatomopathologic alterations in commercial layers experimentally challenged with an attenuated vaccine candidate strain (SG∆cobS∆cbiA) and other two pathogenic strains (SGDcobS and SGNalr) of Gallinarum (SG). In total, 280 commercial layers were randomly divided into 4 groups (G1, G2, G3 and G4). At five days of age, birds from groups G1 received approximately 107 colony forming units (CFU) of SGDcobS; meanwhile birds from group G2 and G3 received the same dose of SGNalr and SG∆cobS∆cbiA, respectively. Birds from G4 were not infected. At 24 hours before (DBI) and 24 hours after (1 DAI), and three (3 DAI), five (5 DAI), seven (7 DAI) ten (10 DAI), and fifteen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute-phase proteins; Attenuation; Fowl typhoid; Histopathology; Leukogram.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200004

Hematology and Histopathology of Broiler Chickens Supplemented with Tuna Black Flour
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Rebolledo,OFP; Barrera,JEM; Márquez,JG; Vázquez,AR; Casillas,ACG.
ABSTRACT The present study evaluated the effect of the sex and dietary intake of tuna black flour (TBF)on the hematology and histopathology of broiler chickens. A total of 200 sexed broilers (Ross 380) were distributed according to a completely randomized design into four treatments (25 males and 25 females/experimental group).Different levels of inclusion of TBF (0, 1, 2, and 3%) were offered as a source of ω-3 polyunsaturated fatty acids (ω-3 PUFAs), for 42 d. At the end of the experiment, blood samples and tissues were collected. The hematocrit value (Hemat), total protein (PROT-T), hemoglobin concentration (Hemog), erythrocytes concentration (Erythro) and total count and differential of leucocytes (Leuco): lymphocytes, heterophils, monocytes,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Hematology; Histopathology; Ω-3 polyunsaturated fatty acids; Tuna black flour.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400312

Histomorphological changes by epididymal lithiasis in roosters
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Geraldo,I; Mahecha,GAB; Martins,NRS.
Epididymal lithiasis (EL) histopathology is described using light and electronic microscopy in roosters (Gallus gallus domesticus) naturally affected by EL in Minas Gerais, Brazil. The histologic and morphological changes by EL in roosters was performed regarding cellular and subcellular details through light and electron microscopy. Efferent ductules epithelium lysosomal increase in size and numbers, membrane rupture, cellular vacuolation, ciliary loss, basal membrane degeneration, inflammatory reaction with mononuclear infiltrations, edema, epithelial and vascular endothelium losses were described. All industrial and freerange chickens showed EL in varying degrees in the efferent ductules (ED). However, ED altered areas did not correlate with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epididymal lithiasis; Histopathology; Light microscopy; Electron microscopy; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100004

Infectious bursal disease virus: case report and experimental studies in vaccinated and unvaccinated SPF chickens and commercial broiler chicks
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Scanavini Neto,H; Ito,NMK; Miyaji,CI; Lima,E de A; Okabayashi,S; Corrêa,ARA; Eleutério,GC; Zuanaze,MA.
IBDV Gm 11 (Simbios eleven-molecular group) has been detected since 1997 in many farms of commercial broilers and layers causing high mortality (2 to 15%) and severe macro and microscopic damage in cloacal bursae, spleen, thymus, kidney and liver. Five serial passages of 2050/97-Gm 11 IBDV sample by CAM route in SPF chicken's embryonated eggs did not elicit increased embryo mortality. High mortality (100%) of 21 day-old SPF leghorn chickens and severe bursal and splenic lesions were seen from 24 up to 48 hours after eye-drop inoculation of 2050/97 strain (50 mL of 10-2 dilution of 10% bursae homogenate). Mortality was not detected when vaccinated SPF and broiler chickens were inoculated. One dead bird was found among ten challenged unvaccinated broilers....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Challenge; Histopathology; IBD; Pathogenicity; Serology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100006

Pathological Aspects of a Subclinical Marek's Disease Case in Free-Range Chickens
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Abreu,DLC; Santos,FF; José,DS; Tortelly,R; Nascimento,ER; Pereira,VLA.
Abstract The present report aims at describing the occurrence of Marek's Disease (MD) in a free range poultry farm based on macroscopic and microscopic lesions. For this purpose, seven free-range chickens were evaluated by gross and microscopic examination. Tumor lesions were observed in the liver and ovary, in addition of enlarged kidney and spleen, skin thickening and whitish lesions in streak form in the breast muscle. Fragments of the affected organs were collected and placed in 10% formalin for processing by the usual histopathology techniques, and stained with hematoxylin-eosin. Under microscopic evaluation, we observed pleomorphic populations of neoplastic lymphoreticular cells with pyknotic nuclei in the same organs, all compatible with MD. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marek's Disease; Histopathology; Free-range chickens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100197

Pathological, immunohistochemical, and molecular findings in commercial laying hens and in backyard chickens naturally infected with the infectious laryngotracheitis virus
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Preis,IS; Fiúza,ATL; Silva,CC; Braga,JFV; Couto,RM; Martins,NR da S; Ecco,R.
Seventy-eight chickens from a very high poultry density (approximately eight million) region and twelve backyard chickens from neighboring areas were analyzed by histopathology and additional techniques for the presence of the infectious laryngotracheitis virus. The virus distribution was determined in different tissues using immunohistochemistry (IHC) and polymerase chain reaction (PCR). The disease was histopathologically diagnosed in 41.0% (32/78) of the commercial layers. Lesions were mainly characterized by syncytial cells with eosinophilic intranuclear inclusion body formed from the hyperplastic epithelium of the upper respiratory tract, primary and secondary bronchi, and conjunctiva. IHC showed 70% (21/30) positive signal in the larynx/trachea and,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian infectious laryngotracheitis; Conventional PCR; Histopathology; Immunohistochemistry; Laying hen.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400004

Gumboro disease: evaluation of serological and anatomopathological responses in vaccinated broiler chickens challenged with very virulent virus strain
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Bolis,DA; Paganini,FJ; Simon,VA; Zuanaze,MF; Scanavini Neto,H; Correa,ARA; Ito,NMK.
This paper describes the effects of a strong type of vaccine - Moulthrop G603 º and an intermediate-plus type of vaccine - 228E º in meat-type chickens challenged with a very virulent strain of infectious bursal disease virus (vvIBDV). Blood samples and bursa of Fabricius were taken weekly up to 42 days of age. It was concluded that bursa of Fabricius weight, bursa weight:body weight ratio, body weight and antibody titer evaluated before and after challenge with vvIBDV were not enough to consistently and conclusively differentiate or estimate the protection given by vaccination. Quantitative evaluation of injury intensity and the number of altered lymphoid follicles revealed that Moulthrop G603 caused moderate microscopic lesions in one out of seven birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GM11; Gumboro; Histopathology; Protection; Vaccine.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200008

Histopathology and autoecology of Didymocylindrus simplex (Digenea: Didymozoidae), parasite of Katsuwonus pelamis (Scombridae) in the Southwestern Atlantic Ocean, off South America
Provedor de dados: Revista Brasileira de Zoologia
Autores: Justo,Márcia C. Nascimento; Kohn,Anna; Pereira,Caroline de Souza; Flores-Lopes,Fábio.
Pathological alterations and autoecology of Didymocylindrus simplex in Katsuwonus pelamis (Linnaeus, 1758) in the Southwestern Atlantic Ocean off of South America are presented. This is the first record of the species in the region; the specimens are described. The pathologic changes observed most often were infiltration of lymphocytes and slight fibrosis of the connective tissue surrounding the parasite. The typical aggregated distribution pattern was observed for Didymocylindrus simplex Ishii, 1935. Statistical analysis demonstrated no correlation between the abundance and prevalence of parasites with the total length of the host. The sex of the host does not influence the prevalence and intensity of infection.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Didymozoids; Histopathology; Parasites of fish; Trematoda.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300008

Haematological and gill responses in parasitized tilapia from valley of Tijucas River, SC, Brazil
Provedor de dados: Scientia Agricola
Autores: Azevedo,Tatiana Maslowa Pegado de; Martins,Maurício Laterça; Bozzo,Fabiana Rizzi; Moraes,Flávio Ruas de.
In the State of Santa Catarina there is no information about haematological and parasitological characteristics of fish maintained in feefishing operations and manured ponds. This work compared the haematological characteristics of Nile tilapia parasitized or not, captured in a property situated in Nova Trento, SC, Brazil, between August 2003 and July 2004. During the studied period, the water temperature, pH, dissolved oxygen, alkalinity, ammonia and transparency were measured. Ten fish were collected monthly either in a feefishing or in a pond receiving pig manure, and anesthetized with benzocaine solution for haematological, parasitological and histopathological exams. From a total of 360 analyzed fish, 64 (17.8%) were parasitized with Cichlidogyrus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oreochromis niloticus; Santa Catarina; Parasitism; Haematology; Histopathology.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200002

Liver histopathology of the fish brachydanio rerio hamilton-buchman after acute exposure to sublethal levels of the organophosphate dimethoate 500
Provedor de dados: Zoologia
Autores: Rodrigues,Edson de Lara; Fanta,Edith.
Among the new substances that were synthesised by the chemical industiy during the last decades, with the aim to improve human prosperity, some cause negative effects on non target organisms like fish. Among the pesticides, the organophosphates (OP) are widely used in cattle management, agriculture and aquaculture activities. Brachydanio rerio Hamilton-Buchman, 1822 is used world-wide in fish-tests for the establishment of the lethal levels of pesticides. Nevertheless, these fish show morphological changes in their hepatocytes when exposed experimentally for 24 hours to the sublethal dose of 0.025 µl/l of the OP Dimethoate 500, in acute tests. Right hours after exposure, a high density of cells with cytoplasmic granulation is seen as well as focal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dimethoate; Histopathology; Fish; Liver; Organophosphates; Sublethal contamination.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200014

Efectos del parasitismo sobre el tejido branquial en peces cultivados: estudio parasitologico e histopatologico
Provedor de dados: Zoologia
Autores: Martins,Maurício Laterça; Romero,Nicolás Garcia.
One hundred four out of 225 diagnosticated cases were myxosporidian, monogenean, Ichthyophthirius multifiliis Fouquet, 1876 and bacterial diseases in Piaractus mesopotamicus Holmberg, 1887 (pacu), Colossoma macropomum Cuvier, 1818 (tambaqui) and tambacu, at Aquaculture Center, Universidade Estadual Paulista (UNESP), Jaboticabal, São Paulo, Brazil, between 1992 and 1995. The gills were fixed in 10% buffered formalin solution to posterior histologic routine. It was observed Henneguya sp. cysts into the capillaries of the secondary lamellae, encapsulated by the respiratory epithelium cells. It provoked adherence of the adjacent lamellae, hyperplasia, congestion, oedema and epithelium displacement. Monogeneans infestations by Anacanthorus penilabiatus Boeger,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protozoa; Monogenea; Histopathology; Brazilian fish.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200017

Liver histopathological changes in breeding bullfrogs - doi: 10.4025/actascibiolsci.v35i4.15981
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Seixas Filho, José Teixeira de; Centro Universitário Augusto Motta / Fundação Instituto de Pesca do Estado do Rio de Janeiro; Hipólito, Márcio; Universidade Estadual Paulista; Pereira, Marcelo Maia; Universidade Estadual Paulista; Martins, Ana Maria C. R. Pinto da Fonseca; Instituto Biológico de São Paulo; Rodrigues, Eliane; Centro Universitário Augusto Motta; Mello, Sílvia Conceição Reis Pereira; Centro Universitário Augusto Motta.
In order to complement the histopathological study of juveniles and tadpoles of the bullfrog, Lithobathes catesbeianus, fed commercial diet used by frog farms in Rio de   Janeiro, containing 40% crude protein, we performed necropsy and histopathology of the liver to establish a relationship between the quality of crude protein in the diet and animal health. For this, it was used twenty breeding male bullfrogs, with average weight 591.30 g (± 91.90 g) and length 165.02 mm (± 14.22 mm), and ten females with average weight and length of 629.80 g (± 134.47 g) and 169.32 mm (± 21.82 mm). The liver histopathology showed hyperemia, high number of melanomacrophages and cytoplasmic rarefaction, probably due to protein deficiency and fatty liver degeneration and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura; Ranicultura aquaculture; Animal nutrition; Protein malnutrition; Histopathology; Frog culture Ranicultura.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15981

The impact of long-term consumption of diets enriched with olive, cottonseed or sesame oils on kidney morphology: A stereological study
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: HASSANZADEH-TAHERI,MOHAMMADMEHDI; HASSANZADEH-TAHERI,MAHSA; JAHANI,FARNAZ; ERFANIAN,ZAHRA; MOODI,HESAM; HOSSEINI,MEHRAN.
Abstract: To date, most of studies have only focused on metabolic effects of dietary oils while recent evidence proposes that they can influence kidneys structure. Therefore, the aim of this study was to evaluate the impact of long-term consumption of olive, cottonseed and sesame oils on renal morphology in rats. 70 male Wistar rats randomly assigned into seven equal groups and treated with standard diet (control), the standard diet enriched with 10% or 20% (W/W) of either olive oil (OLI10%, OLI20%), cottonseed oil (COT10%, COT20%) or sesame oil (SES10%, SES20%) for 5 months. Quantitative features of the kidney including kidney and cortex volumes and the number of glomeruli were analyzed stereologically. Moreover, kidney sections histologically were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cottonseed oil; Histopathology; Kidney; Olive oil; Sesame oil; Stereology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300702

Essential oils of green cumin and chamomile partially protect against acute acetaminophen hepatotoxicity in rats
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: EBADA,MOHAMED E.
ABSTRACT Essential oils of green cumin (Cuminum cyminum) and chamomile (Chamomilla recutita) have antioxidant and anti-inflammatory effects. Acetaminophen, N-acetyl-p-amino-phenol, is an over-the-counter analgesic and antipyretic. Despite being safe at therapeutic doses, acetaminophen overdose is a leading cause of acute liver failure. This study aimed to compare the possible protective effects of cumin and chamomile essential oils against acute acetaminophen hepatotoxicity in male rats. Cumin oil (400 mg/kg) and chamomile oil (250 mg/kg) were orally administered for 2 weeks prior to a single acetaminophen dose (1g/kg). Serum liver function enzymes, oxidative stress markers in the liver and histopathological features were evaluated. Acetaminophen caused...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetaminophen; Acute hepatotoxicity; Chamomile; Cuminum cyminum; Histopathology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502347

Antifibrotic effects of total or partial application of amniotic membrane in hepatic fibrosis
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: MAMEDE,KARINA M.; SANT’ANNA,LUCIANA B.
Abstract: Liver fibrosis is the final common pathway of chronic liver diseases, having cirrhosis as a possible progression, which has liver transplantation as the only effective treatment. Human amniotic membrane represents a potential strategy as a therapy for liver fibrosis, due to its anti-inflammatory, anti-fibrotic and immunomodulatory properties. The aim of this study was to evaluate amniotic membrane effects as a treatment for hepatic fibrosis induced in rats by bile duct ligation (BDL), verifying alterations between two different forms of amniotic membrane application, around all the lobes of the liver and around only one lobe of the liver. Two weeks after inducing fibrosis, an amniotic membrane fragment was applied to the surface of the liver,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amniotic membrane; Histopathology; Immunohistochemistry; Liver fibrosis; Myofibroblasts.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500702

Pulmonary, microbiological and hematological changes in Crotalus durissus terrificus (Serpentes, Viperidae) parasitized by nematodes of the genus Rhabdias (Nematoda, Rhabdiasidae)
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Santos,K.R.; Takahira,R.K.; Rall,V.L.M.; Calderón,C.; Sequeira,J.L.; Silva,R.J.
This study reported the pulmonary, microbiological, and hematological alterations in Crotalus durissus terrificus parasitized by nematodes of the genus Rhabdias. Histological, microbiological, and hematological analysis were performed on parasitized (n=6) and non-parasitized (n=6) snakes. Granulocytic and mononuclear cell infiltrates in the pulmonary parenchyma and epithelium were also observed during the histological analysis of parasitized snakes. Microbiological analysis of parasitized animals revealed the following Gram-negative bacteria: Citrobacter divergens, Burkholderia cepacia, Stenotrophomonas maltophilia, Proteus vulgaris, Enterobacter sakazakii, Enterobacter ammnigenus, Pseudomonas aeruginosa, Pantoea sp. and Providencia rettgeri. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snake; Crotalus durissus terrificus; Rhabdias spp.; Histopathology; Microbiology; Hematology.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000300022

Undifferentiated carcinoma of the pancreas in a cockatiel ( Nymphicus hollandicus ): case report
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Carvalho,T.S.G.; Abreu,C.C.; Nakayama,P.A.; Wouters,F.; Saad,C.E.P.; Zangeronimo,M.G.
ABSTRACT Undifferentiated carcinoma of the pancreas is a malignant neoplasm that is uncommon among domestic species, especially cockatiels (Nymphicus hollandicus), one of the most popular birds kept as a pet throughout the world. The aim of this study was to describe the occurrence of an undifferentiated carcinoma in the pancreas of a cockatiel. A bird, an adult male that died naturally with swelling in the abdominal region, was referred to necropsy. Macroscopic examination showed poor body condition, the coelomic cavity filled with liquid and a white mass attached to the pancreas and other smaller masses attached to the duodenum. Tissue samples and organs were harvested and fixed in 10% buffered formalin, then routinely processed for histopathology and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pancreatic cancer; Epithelial tumor; Histopathology; Parrot; Cacatuidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300600

Protocol for the anatomopathological examination of canine mammary tumors
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Ferreira,E.; Bregunci,G.C.; Schmitt,F.C.; Cassali,G.D.
Foi elaborado um protocolo para exame anatomopatológico de tumores de mama em cães, constituído de três partes: requisição, exame clínico e laudo histopatológico. O exame clínico contém dados sobre a descrição macroscópica da lesão. O laudo histopatológico constituiu-se de campos para descrição microscópica pormenorizada das lesões e classificação da principal lesão observada. A elaboração do protocolo tem como objetivo estabelecer critérios para estudos e pesquisas sobre neoplasias mamárias em animais e auxiliar no diagnóstico e prognóstico de lesões mamárias.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoplasia; Mammary gland; Histopathology; Protocol; Dog.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000100017

Comparative study of histopathology and immunohistochemistry of indefinite round cell cutaneous tumors and characterization of canine lymphoma
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Machado,L.H.A.; Palumbo,M.I.P.; Zahn,F.S.; Amorim,R.L.; Farias,M.R.; Werner,J.; Torres Neto,R.; Rodrigues,J.C.; Oliveira,F.C.
With the purpose of shedding light on some doubts in veterinary oncology, the present article intends to compare the results of histopathological and immunohistochemical examinations of unspecific round cell neoplasia, to realize immunophenotyping of canine lymphoma cases, to establish the T or B origin of neoplastic cells, and to determine the degree of proliferation and apoptosis of lymphomas by immunohistochemistry. Of 11 animals presenting immunohistochemical diagnosis of lymphoma, five had been diagnosed as Lymphoma by HE staining of histopathological slides and six had been classified as unspecific round cell neoplasia. All cases submitted to immunohistochemical examination were T-cell lymphomas. There was a positive correlation between cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Histopathology; Immunohistochemistry; Round cell neoplasia; Lymphoma.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000100032

Canine visceral leishmaniasis: a remarkable histopathological picture of one asymptomatic animal reported from Belo Horizonte, Minas Gerais, Brazil
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Xavier,S.C.; Chiarelli,I.M.; Lima,W.G.; Gonçalves,R.; Tafuri,W.L.
A remarkable histopathological picture of one asymptomatic dog naturally infected with Leishmania infantum (syn. chagasi) has been presented. Intracellular parasites were ease found in macrophages of all exanimated organs, especially in skin. Embedded paraffin tissues of liver, spleen, axillary and popliteal lymph nodes, and skin (ear, muzzle and abdomen) were stained by hematoxylin and eosin and by immunocytochemical reaction (streptoavidin-peroxidase method) to detect parasites. All organs showed an intense parasitism associated to severe pathological changes. All lymph nodes had conspicuous histological architecture alterations. Lymphocytes were replaced by macrophages stuffed with an intense number of amastigotes forms of Leishmania. The lymphoid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Leishmania infantum; Histopathology.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000600004

Histopathological and ultrastructural characteristics of myeloid leukosis in broiler chicken
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Manzan,R.M.; Baccaro,M.R.; Ferreira,A.J.P.; Sinhorini,I.L.; Moreno,A.M.
An ultrastructural and histological study was performed to determine the degree of differentiation of the neoplastic cells. The histological study revealed neoplastic cells with pleomorphism, oval nuclei, prominent nucleoli, irregularly distributed chromatin, atypical mitotic figures and moderate amount of cytoplasm containing spherical eosinophilic granulations, typical features of the myeloid lineage. Ultrastructurally, there were cells with an electron-dense, oval and voluminous nucleus, with predominant euchromatin and cytoplasm containing many spherical, electron-dense and homogeneous granules, indicative of myelocytes with differentiation to eosinophils. Type-C viral particles were also seen in the intercellular space of renal tubules and inside the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Avian leukosis; Avian oncovirus; Histopathology; Ultrastructure.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000500009

The first report of massive infestation with Lipoptena Cervi ( Diptera: Hippoboscidae ) in Roe Deer ( Capreolus Capreolus ) in Iasi county, N-E of Romania
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Lazăr,M.; Iacob,O.C.; Solcan,C.; Pașca,S.A.; Lazăr,R.; Boișteanu,P.C.
ABSTRACT Investigations of four roe deer corpses were carried out from May until October 2014, in the Veterinary Forensic Laboratory and in the Parasitic Diseases Clinic, in the Iasi Faculty of Veterinary Medicine. The roe deer were harvested by shooting during the trophy hunting season. The clinical examination of the shot specimens revealed the presence of a highly consistent number of extremely mobile apterous insects, spread on the face, head, neck, lateral body parts, abdominal regions, inguinal, perianal and, finally, all over the body. The corpses presented weakening, anemia and cutaneous modification conditions. Several dozen insects were prelevated in a glass recipient and preserved in 70º alcoholic solution in order to identify the ectoparasite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Roe deer; Lipoptena cervi; SEM; Histopathology; Iasi county.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200293

Melanin bleaching with potassium permanganate for melanocytic lesions diagnosis in veterinary medicine
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Moreira,T.A.; Blanca,W.T.; Gundim,L.F.; Castro,I.P.; Medeiros-Ronchi,A.A.
ABSTRACT The aim of this study was to microscopically re-evaluate the melanocytic lesions diagnoses established by the Animal Pathology Laboratory of the Federal University of Uberlândia, in the state of Minas Gerais, Brazil, over a period of eleven years; in addition, to perform a comparative analysis between the conventional histopathological (CH) method and the use of the melanin bleaching (MB) technique with potassium permanganate, sulfuric acid, and oxalic acid solutions. The results of the MB method presented a disagreement in 24.32% of the diagnosis previously by CH, with low agreement (61.0%) and low Kappa coefficient (0.2267). Melanoma was the most frequent lesion, more frequent in elderly and non-breed female dogs. The most frequent melanoma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Depigmentation; Histopathology; Melanotic pigments.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000501497

Presence of ascites in bullfrog breeders reared and kept on a frog farm
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Seixas Filho,J.T.; Santana,A.C.; Martins,A.C.P.F.; Mesquita,E.F.M.; Mello,S.C.R.P.; Hipolito,M.
ABSTRACT Ascites is a pathology characterized by the extravasation of fluid from blood vessels and its accumulation in the abdominal cavity, caused by several associated factors. In this paper, we report the occurrence of this syndrome in breeding male and female Bullfrogs fed a commercial fish feed with 40% crude protein. Liver malformation was already observed due to lack of protein deposition in adult animals from the same spawning. The culture of ascitic fluid showed absence of bacterial growth. Kidney histopathology showed, in both sexes, a large number of tubular structures with strongly eosinophilic hyaline material suggesting colloid growth in both the cortical region and spinal cord. The analysis also revealed granulomas in various stages of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Captive breeding; Feeding; Histopathology; Metabolic disease; Lithobates catesbeianus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601955

Histopathological and immunohistochemical study of the gastrointestinal tract from a dog naturally infected with Leishmania (Leishmania) chagasi: a case report
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Silva,F.L.; Tafuri,W.L.; Oliveira,M.R.; Tafuri,Wg. L.
Samples of stomach, duodenum, jejunun, ileum, cecum and colon were collected for Giemsa-smears ("imprints") from one asymptomatic mongrel dog, naturally infected with Leishmania (L) chagasi. Other fragments were obtained and fixed in formalin (10% and buffered) for histopathological and immunohistochemical studies. The immunohistochemistry was carried out by a streptavidin-peroxidase technique and it allowed to detect amastigote forms of Leishmania chagasi in the different paraffin gut sections. The principal lesion observed was a discrete to moderate chronic inflammatory reaction in the mucosa and submucosa in all fragments of the gastrointestinal tract (GIT). A chronic cellular exsudate was observed in all GIT tissues and it was composed by mononuclear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Visceral leishmaniasis; Histopathology; Immunohistochemistry.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000400002

Investigations in associated protozoa-bacterial infections of cyprinids from a fish farm situated on the Jijia river in N-E of Romania
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Lazăr,M.; Miron,L.; Gostin,I.; Rîmbu,C.; Lazăr,R.; Guguianu,E.
In autumn 2011 in cyprinid farms located in Iasi on the Jijia river, several infections with bacterial strains and macroscopical external cysts on the skin were diagnosedwhich developed as a result of the stress induced by biotic and abiotic factors. On the examination of the cyst contents the presence of numerous spores was observed, mostly of the Dermocystidium spgenusThe samples were taken from the common carp (Cyprinus carpio) and crucian carp (Carassius auratus gibelio)species from the fish farm as well as from the Jijia River. 35 fish were examined, all of them showing cysts, fragmentation of their dorsal fin and congestion of the gills. Histological examination of the skin showed a field of multiple dermal cysts with round light eosinophilic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyprinids; Pseudomonas; Dermocystidium; SEM (Scanning Electron Microscopy); Histopathology.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300688

Gross and histopathological findings in magellanic penguins (Spheniscus magellanicus Forster, 1781)
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Carvalho,C.O.; Cuenca,S.C.; Kleeb,S.R.; Gallo,H.; Baldassin,P.
Durante os movimentos migratórios os Pinguins-de-Magalhães chegam às águas da costa brasileira, especialmente nos estados do sul do Brasil até o estado do Rio de Janeiro. Muitos chegam desidratados, hipotérmicos, com lesões traumáticas ou coberto de óleo, exigindo cuidados especiais em centros de reabilitação. Vinte e quatro pinguins juvenis, que chegaram para a reabilitação e posteriormente vieram a óbito apresentaram caquexia, incapacidade de ficar ereto e manter a temperatura do corpo, média de 33ºC ou menos, apresentando desidratação, bradicardia e letargia. Durante a necrópsia, amostras histológicas foram coletadas de fígado, pulmão e rim. Um importante achado histopatológico foi a congestão hepática passiva, encontrada em 50% dos espécimes e a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pinguim-de-Magalhães; Necrópsia; Histopatologia; Magellanic penguin; Gross; Histopathology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000300034

Spontaneous multi-cystic peripheral ameloblastoma in the freshwater angelfish, from the Brazilian state of Pará
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Videira,M.; Velasco,M.; Tortelly,R.; Clemente,S. C. São; Matos,P.; Sanches,O.; Matos,E.
Este trabalho registra a ocorrência espontânea de ameloblastoma em P. scalare. O tumor foi obtido a partir de um exemplar de Acará Bandeira, sendo fixado, seccionado, e os fragmentos processados para microscopia de luz e microscopia eletrônica de varredura (MEV). O exame macroscópico evidenciou uma massa tumoral que se estendia do rebordo alveolar do maxilar superior à face externa labial. À MEV, a neoplasia apresentou uma série de espículas. Microscopicamente, percebia-se um processo neoplásico constituído por tecido conjuntivo de característica mixoide, ricamente vascularizado, onde eram observados fragmentos de tecido osteoide. A amostra revelou proliferação neoplásica do epitélio odontogênico, onde as células neoplásicas se organizavam na forma de...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Fish; Pterophyllum scalare; Histopathology; Neoplasia.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000401201

Effect of 0.25 ppm Ozone exposure on pulmonary damage induced by bleomycin
Provedor de dados: Biological Research
Autores: OYARZÚN,MANUEL; DUSSAUBAT,NELSON; GONZÁLEZ,SERGIO.
To study the effect of ozone in a chronically damaged lung, we used a bleomycin (BLM) induced pulmonary fibrosis model. Both endotracheal instillation of BLM and O3 exposure both produce lung inflammation and fibrosis. Oxidative stress would be a common mechanism of damage for both BLM and O3. Our aim was to assess lung injury induced by 5 and 60 days of intermittent exposure to 0.25 ppm O3 in rats with bleomycin-induced pulmonary fibrosis. Thirty-day-old Sprague Dawley rats were endotracheally instilled with BLM (1 U/100 g body weight) and, 30 days later, exposed to 0.25 ppm O3 (0.25 ppm 4 h per day, 5 days a week). Histopatology controls were instilled with saline and breathing room air. Histopathological evaluation of lungs was done 5 and 60 days after...
Tipo: Journal article
Palavras-chave: Bleomycin; Histopathology; Lung damage; Ozone exposure.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000400007

Lead Nitrate Induced Testicular Toxicity in Diabetic and Non-Diabetic Rats: Protective Role of Sodium Selenite
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Apaydin,Fatma Gokce; Kalender,Suna; Bas,Hatice; Demir,Filiz; Kalender,Yusuf.
Among heavy met als, lead is one of the common pollutants found in the environment and biological system. In the present study, streptozotocin-induced diabetic and normal non-diabetic male Wistar rats were given sodium selenite (1.0 mg/kg bw), lead nitrate (22.5 mg/kg bw) and sodium selenite plus lead nitrate (1.0 mg/kg+22.5 mg/kg bw, respectively) through gavage. At the end of 4th week, malondialdehyde (MDA) levels, antioxidant enzyme activities [superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST)], and histopathological changes of testes were investigated compared to the control group. No significant differences were observed between the control and sodium selenite treated groups. However, lead...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testicular toxicity; Lead nitrate; Sodium selenite; Streptozotocin; Oxidative stress; Histopathology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100068

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Al-Balawi,Hmoud Fares Alkahem; Al-Akel,Ali Sulaiman; Al-Misned,Fahad; Suliman,El Amin Mohamed; Al-Ghanim,Khalid Abdullah; Mahboob,Shahid; Ahmad,Zubair.
The aim of this work was to study the effects of sub-lethal exposure of lead acetate on the histopathology of the gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus. Results showed that lead accumulation in the tissues of C. gariepinus was dependent on the exposure period and lead concentration. Gills and liver were the predominant storage tissue and the order of accumulation in tissues was gill &gt; liver &gt; kidney &gt; muscle. Some structural changes were observed in different organs, especially in the gills of the fishes exposed to lead acetate. Epithelial hypertrophy and epithelial lifting were apparent in the gills of exposed fishes. The degeneration of cytoplasm and secondary lamellae was also observed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clarias gariepinus; Lead acetate; Accumulation; Histopathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200015

Vitamin E and Sodium Selenite Against Mercuric Chloride-Induced Lung Toxicity in the Rats
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Celikoglu,Emine; Aslanturk,Ayse; Kalender,Yusuf.
The aim of the present study was to elucidate the possible protective role of vitamin E and / or sodium selenite on mercuric chloride-induced oxidative stress and histopathological changes in the lung tissue of the rats. Adult male albino Wistar rats were exposed to mercuric chloride (1.0 mg/kg day) for four weeks. Treatment with mercuric chloride led to oxidative stress by enhancing MDA level and also decreasing superoxide dismutase (SOD), catalase (CAT) glutathione peroxidase (GPx) and glutathione S transferaz (GST) activities. However, mercuric chloride exposure resulted in histopathological changes in the lung tissue in the rats. MDA level and SOD, CAT GPx and GST activities and histopathological changes modulated in concomitantly supplementation of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mercuric chloride; Sodium selenite; Vitamin E; Lung toxicity; Oxidative stress; Histopathology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000400587

Ultra-structural and histochemical analysis of channel catfish (Ictalurus punctatus) liver treated with fumonisin B1
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Scaff,Rejane Maria Cirra; Scussel,Vildes Maria.
The histopathological effects of fumonisin B1 (FB1) injected intraperitoneally (IP), was evaluated in catfish (Ictalurus punctatus). Fishes were divided into four Groups. Groups II, III and IV were treated IP with FB1 injections of 1; 5 and 10 mg/kg bw/day, respectively, during 21 days. At the 7th, 14th and 21st day, fishes were sacrificed. The livers were hystologicaly analysed by the light and transmission electronic microscopy. Livers from the 7th day showed organelles alterations, particularly in the granular endoplasmatic reticle, mitochondria, nucleus and nucleolus mediated by FB1 doses. The occurrence of processes involved in the necrosis and apoptosis was detected. At the highest FB1 dose,the livers presented an intense response with an accentuate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liver; Catfish; Fumonisin B1; Histopathology; Ultra-structural microscopy.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200013

Impact of Anthropogenic Activities on Water Quality of The Paranhana River, Southern Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Dalzochio,Thaís; Souza,Mateus Santos de; Simões,Leonardo Airton Ressel; Silva,Gláucia Joselaine Herbert; Rodrigues,Gabriela Zimmermann Prado; Andriguetti,Natália Bordin; Silva,Luciano Basso da; Gehlen,Günther.
Abstract: The Paranhana River, located in Southern Brazil, is one of the major tributaries of the Sinos River basin and receives mainly industrial and domestic effluents. In the present study, water physicochemical and microbiological analyses, condition factor, micronucleus test, gill histopathology and metal bioaccumulation in the muscle of the native fish Bryconamericus iheringii collected at two sites (S1 and S2) of the Paranhana River under different degrees of anthropogenic pressures were assessed in four sampling campaigns. Data from water quality parameters, condition factor, mucous cells proliferation in fish gills and bioaccumulation of chromium and manganese in muscle evidenced higher impacts at S2, whereas a higher genotoxic potential was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomarkers; Paranhana River; Bioaccumulation; Histopathology; Micronucleus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100421

Gill histopathological alterations in Nile tilapia, Oreochromis niloticus exposed to treated sewage Water
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Fontaínhas-Fernandes,António; Luzio,Ana; Garcia-Santos,Sofia; Carrola,João; Monteiro,Sandra.
Adult Nile tilapia, Oreochromis niloticus, of both sexes were exposed in wastewater from a sewage treatment plant for a period of 4 days. Gill samples were collected after 24, 48, 72 and 96 h and histopathological changes were analyzed by light and scanning electronic microscopy. Gill epithelium of control O. niloticus (freshwater group) was similar to that of other teleosts, while histopathological lesions were observed in exposed fishes. The main histopathological changes were edema, lifting of lamellar and filamentar epithelia and lamellar fusion. Cell proliferation with consequent thickening of the filament epithelium was also found in fishes exposed to the treated sewage water. The severity of the lesions increased with the time of exposure, namely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gill; Tilapia; Histopathology; Wastewater.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500023

Histopathological Alterations in Common Carp (Cyprinus carpio L.) Gills Caused by Thiamethoxam
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Georgieva,Elenka; Stoyanova,Stela; Velcheva,Iliana; Yancheva,Vesela.
This work aimed to study the effect of new neonicotinoid thiamethoxam on the histological structure of common carp (Cyprinus carpio, L.) gills. Three experimental groups of fish were treated with 6.6, 10 and 20 mg/l thiamethoxam in laboratory conditions. Results showed different histological changes in the gill epithelium, which included lamellar lifting, edema, proliferation of the glandular cells and epithelium, covering the gill filament, fusion and degenerative alterations. The blood circulatory system showed mainly vasodilatation. All thiamethoxam concentrations activated compensatory-adaptive mechanisms, which caused pathological changes in the gills. Moreover, there was a tendency towards the enhancement of the gill histological changes, whose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecticides; Histopathology; Freshwater fish; Gills.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600991

Histopathological changes in the gill and liver tissues of freshwater fish, Cirrhinus mrigala exposed to dichlorvos
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Velmurugan,Babu; Selvanayagam,Mariadoss; Cengiz,Elif Ipek; Unlu,Erhan.
The histopathological effects of dichlorvos, an organophosphate pesticide, on the gill and liver tissues in Cirrhinus mrigala were determined by light microscopy. The fishes were exposed to sublethal concentrations (0.91 and 1.82 ppm) of dichlorvos for 10 days with parallel untreated control. No histopathological effects were observed in control group. Hyperplasia, desquamation, and necrosis of epithelial, epithelial lifting, oedema, lamellar fusion, collapsed secondary lamellae, curling of secondary lamellae and aneurism in the secondary lamellae were observed in gill tissues exposed to dichlorvos. Hepatic lesions in the liver tissues of fishes exposed to dichlorvos were characterized by cloudy swelling of hepatocytes, congestion, vacuolar degeneration,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dichlorvos; Organophosphate pesticide; Cirrhinus mrigala; Histopathology.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500029

Polycystic ovarian syndrome: temporal characterization of the induction and reversion process in an experimental model
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: Salvetti,Natalia R.; Canal,Ana M.; Gimeno,Eduardo J.; Ortega,Hugo H.
Numerous experimental models have been developed for the study of the polycystic ovarian syndrome in the rat. In the present study, the syndrome was induced by exposure to constant light. The process was evaluated during its induction and also during its reversion. The estral cycle was analyzed through the vaginal cytology; reproductive parameters were evaluated by mating, as well as the ovarian morphology. All the animals developed the syndrome after 13 weeks of permanent light. The histologic characteristics of the ovaries, at week 15, were similar to those observed in the polycystic ovarian syndrome in human and other species. After regression of the syndrome, there was not difference in any of the evaluated reproductive parameters, when compared with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histopathology; Ovary; PCOD; Polycystic ovarian syndrome; Rat.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962004000600006

Early embryonic death in mares: clinical and hormonal aspects
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: PAPA,Frederico Ozanam; LOPES,Maria Denise; ALVARENGA,Marco Antonio; MEIRA,Cezinande de; LUVIZOTTO,Maria Cecília Rui; LANGONI,Hélio; RIBEIRO,Erley Felix; AZEDO,Antonio Esteves; BOMFIM,Antonio Carlos de Miranda.
The present study aimed to diagnose early embryonic death in 128 mares. Blood samples were collected at the 4th, 7th, 10th, 13th, 16th, 19th, 21st and 30th day after ovulation and the diameter of the corpus luteum was measured. The diameter and characteristics of the embryonic vesicle were evaluated by ultrasonography. Microbiology, cytology and histopathology were carried out in mares with embryonic death. Plasma oestrogen and progesterone concentration were measured by radioimmunoassay. From 128 mares, 17 (13.28%) showed early embryonic death. The embryonic losses took place at 19 days of pregnancy in 47.05% and at 21 days of pregnancy in 29.4% of the mares. The diameter of the corpus luteum in the mares that maintained pregnancy was similar to those...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo mortality; Progesterone; Estrogen; Histopathology; Equine.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000400005

Comparative evaluation of the susceptibility of cultivated fishes to the natural infection with myxosporean parasites and tissue changes in the host
Provedor de dados: Brazilian Journal of Biology
Autores: MARTINS,M. L.; SOUZA,V. N. de; MORAES,J. R. E. de; MORAES,F. R. de; COSTA,A. J. da.
The purpose of the study was to evaluate the susceptibility of 4 important cultivated fishes to sporozoan parasites. Fishes were collected bimonthly from a pond for a period of 1 year. Myxobolus colossomatis and Henneguya piaractus were found in the internal organs and gills, respectively. The combined incidence of parasitism by both myxozoa was 97.3% in pacu (Piaractus mesopotamicus), 33.3% in hybrid tambacu (Piaractus mesopotamicus x Colossoma macropomum), 5.6% in tambaqui (Colossoma macropomum) and 0% in carp (Cyprinus carpio). Pacu was the most susceptible fish and was parasitized 79.2% in the gills, 66.7% in the kidney and 50% in the spleen. Histopathological evaluation of the gills showed hemorrhages, inflammatory reaction with mononuclear cells and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myxozoa; Susceptibility; Histopathology; Cultivated fish.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000200010

Gill infection of Leporinus macrocephalus Garavello &amp;amp; Britski, 1988 (Osteichthyes: Anostomidae) by Henneguya leporinicola n. sp. (Myxozoa: Myxobolidae). Description, histopathology and treatment
Provedor de dados: Brazilian Journal of Biology
Autores: MARTINS,M. L.; SOUZA,V. N. de; MORAES,J. R. E de; MORAES,F. R de.
Piauçus (Leporinus macrocephalus), were raised in 300 m² ponds (density of 10 fish/m²) presenting asphyxia signals and daily mortality of 27 fishes. Specimens with 8-cm total body length, were collected for necropsy. Mucus of body surface and pieces of organs were collected and examined microscopically, in wet mounts, stained or in histological sections. The smears examination showed the presence of several spores in the secondary lamellae of the gill filaments, identified as Henneguya leporinicola n.sp (Myxozoa: Myxobolidae). Histopatological study showed epithelial hyperplasia and fulfilling of the spaces between the secondary lamellae, congestion and teleangiectasia sinusoidal. It was also observed hyperplasia of the goblet cells and several cysts of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myxozoa; Henneguya leporinicola; Leporinus macrocephalus; Histopathology; Description.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000300018

Rhinoscleroma causing severe bilateral nasal obstruction
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Moraes,Mário Augusto Pinto de; Magalhães,Albino Verçosa de; Marinho,Larissa Cardoso; Azevedo,Ana Emília Borges de; Carneiro,Fabiana Pirani; Raymundo,Igor Teixeira.
Rhinoscleroma is a chronic, infectious and granulomatous disease of the respiratory tract. There is often a delay in diagnosis due to unfamiliarity with the disease and also because culture is not always positive. We report a case in a 26-year-old woman with granular mass obstructing bilateral nasal cavities and causing breathing difficulty. Histopathological examination showed characteristic Mikulicz histiocytes containing numerous Gram-negative intracellular rod-shaped bacilli consistent with the diagnosis of rhinoscleroma. The patient was treated with gemifloxacin and tetracycline and remains asymptomatic over a year follow-up period. It is important to consider rhinoscleroma in cases of chronic nasal obstruction. As culture is not always positive,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Rhinoscleroma; Nasal obstruction; Histopathology.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000200015

Lupus vulgaris in a pediatric patient: a clinicohistopathological diagnosis
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Afsar,F. Sule; Afsar,Ilhan; Diniz,Gulden; Asilsoy,Suna; Sorguc,Yelda.
Lupus vulgaris is the most common form of cutaneous tuberculosis which usually occurs in patients previously sensitized to Mycobacterium tuberculosis. We present a case of a 10-year-old boy who was diagnosed as lupus vulgaris clinically and histopathologically. He had well demarcated, irregularly bordered, pink, infiltrated plaques on his left cheek showing apple-jelly appearance on diascopy. The histopathological examination showed tuberculoid granulomas with Langhans type giant cells. The Mantoux reactivity was in normal limits, and no acid-fast bacilli was found in the lesion, either by direct stained smears or by culture. The lesions showed marked improvement on anti-tuberculosis treatment. We want to emphasize that histopathological examination has...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lupus vulgaris; Histopathology; Clinical appearance; Culture.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000200011

An unusual case of ectopic tungiasis with pseudoepitheliomatous hyperplasia
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Heukelbach,J.; Sahebali,S.; Van Marck,E.; Sabóia Moura,R.C.; Feldmeier,H.
Tungiasis is caused by the penetration of the female sand flea Tunga penetrans into the epidermis, and subsequent hypertrophy of the parasite. In most cases lesions are confined to the feet. During a cross-sectional study, an unusual case of ectopic tungiasis in the inguinal area was detected. Histological examination of tissue samples showed a remarkable pseudoepitheliomatous aspect of the epidermis. Clinical features and differential diagnoses are discussed.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Ectoparasite; Tunga penetrans; Tungiasis; Ectopic localization; Histopathology; Brazil.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600012

Prolonged acceptance of skin grafts induced by B cells places regulatory T cells on the histopathology scene
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Langier,S.; Galvani,R.G.; Alves,A.P.G.; Fidelis,R.; Nunes,P.H.C.; Silva,M.H.; Castilho,L.R.; Monteiro,J.P.; Bonomo,A.
The participation of regulatory T (Treg) cells in B cell-induced T cell tolerance has been claimed in different models. In skin grafts, naive B cells were shown to induce graft tolerance. However, neither the contribution of Treg cells to B cell-induced skin tolerance nor their contribution to the histopathological diagnosis of graft acceptance has been addressed. Here, using male C57BL/6 naive B cells to tolerize female animals, we show that skin graft tolerance is dependent on CD25+ Treg cell activity and independent of B cell-derived IL-10. In fact, B cells from IL-10-deficient mice were able to induce skin graft tolerance while Treg depletion of the host inhibited 100% graft survival. We questioned how Treg cell-mediated tolerance would impact on...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Skin graft; Tolerance; B cells; Treg; Histopathology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001000009

The effect of microgravity on tissue structure and function of rat testis
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Ding,Ye; Tang,Jin; Zou,Jun; She,Ruiping; Wang,Yinghua; Yue,Zhuo; Tian,Jijing; Xia,Kangkang; Yin,Jun; Wang,Desheng.
To explore whether an environment of weightlessness will cause damage to the reproductive system of animals, we used the tail-suspension model to simulate microgravity, and investigated the effect of microgravity on the tissue structure and function of the testis in sexually mature male rats. Forty-eight male Wistar rats weighing 200-250 g were randomly assigned to three groups (N = 16 each): control, tail traction, and tail suspension. After the rats were suspended for 7 or 14 days, morphological changes of testis were evaluated by histological and electron microscopic methods. The expression of HSP70, bax/bcl-2 and AR (androgen receptor) in testis was measured by immunohistochemistry. Obvious pathological lesions were present in the testis after the rats...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simulated microgravity; Histopathology; AR; HSP70; Bax/bcl-2; Testis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001200007

Short-term evaluation of non-absorbable microgranular hydroxyapatite infiltration in the guinea pig subepidermal abdominal region
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Xavier,A.P.; Schellini,S.A.; Aragon,F.F.; Padovani,C.R.; Taga,E.M.
Non-absorbable microgranular hydroxyapatite was infiltrated into the subepidermal abdominal region of guinea pigs in order to assess the possibility of using this material to correct deficiencies in orbital volume. Microgranular hydroxyapatite (2.0 ml) was subepidermally infiltrated into the abdominal region of 20 guinea pigs. The animals were divided into four experimental groups of 5 animals each, which were killed 7 (G1), 15 (G2), 30 (G3) and 60 (G4) days after infiltration. The area and the largest and smallest diameters of the nodules formed by infiltration were evaluated at the site of infiltration and histological examination was performed. The mean granuloma area was similar in all groups. Histopathological examination showed that the material...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infiltration; Microgranular hydroxyapatite; Guinea pigs; Histopathology.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000100010

131I-induced changes in rat thyroid gland function
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Torlak,V.; Zemunik,T.; Modun,D.; Capkun,V.; Pesutic-Pisac,V.; Markotic,A.; Pavela-Vrancic,M.; Stanicic,A.
Therapeutic doses of 131I administered to thyrotoxic patients may cause thyroid failure. The present study used a rat model to determine thyroid function after the administration of different doses of 131I (64-277 µCi). Thirty male Fisher rats in the experimental group and 30 in the control group (untreated) were followed for 6 months. The animals were 4 months old at the beginning of the experiment and were sacrificed at an age of 9 months. Hormone concentration was determined before 131I administration (4-month-old animals) and three times following 131I administration, when the animals were 7, 8, and 9 months old. The thyroid glands were removed and weighed, their volume was determined and histopathological examination was performed at the end of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thyroid gland; 131I; Hormones; Histopathology; T3; T4; TSH.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800009

Glycosuria in glomerular diseases: histopathology and clinical correlations
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Woronik,V.; Freitas,I.F.; Saldanha,L.B.; Sabbaga,E.; Marcondes,M.
There are doubts about the presence of glycosuria and the progress of glomerular disease. Some reports suggest that glycosuria could be an index of a more severe tubulointerstitial lesion. We investigated the presence of glycosuria in 60 patients with primary glomerular diseases: 17 patients (28%) had glycosuria and 43 patients (72%) were glycosuria free. The two groups were similar in age, arterial pressure and sex. Serum creatinine was higher in patients with glycosuria (2.0 ± 1.7 vs 1.3 ± 0.9 mg/dl, P&amp;lt;0.05). The protein excretion rate was 7.5 ± 3.7 vs 5.3 ± 4.2 g/day (P&amp;gt;0.05) in patients with and without glycosuria, respectively, while serum albumin was lower in patients with glycosuria (1.7 ± 0.6 vs 2.7 ± 1.0 g/dl, P&amp;lt;0.05). Several...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomerulonephritis; Glycosuria; Histopathology.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500005

Glanders in donkeys (Equus asinus) in the state of Pernambuco, Brazil: a case report
Provedor de dados: Brazilian Journal of Microbiology
Autores: Mota,Rinaldo Aparecido; Oliveira,Andréa Alice da Fonseca; Pinheiro Junior,José Wilton; Silva,Leonildo Bento Galiza da; Brito,Marilene de Farias; Rabelo,Silvana Suely Assis.
The clinical, anatomical and histopatological findings of glanders diagnosis in donkeys in the state of Pernambuco-Brazil are reported. The animals were euthanized and necropsied, and evaluated for lesions in respiratory and lymphatic systems, confirming the disease by isolation of Burkholderia mallei and Strauss test.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Burkholderia mallei; Epidemiology; Microbiology; Histopathology; Strauss test.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100021

Histopathology of cotton bollworm midgut infected with Helicoverpa armigera cytoplasmic polyhedrosis virus
Provedor de dados: Brazilian Journal of Microbiology
Autores: Marzban,Rasoul; He,Qian; Zhang,Qingwen; Liu,Xiao Xia.
This research was carried out to examine cytopathological effects of Helicoverpa armigera Cytoplasmic polyhedrosis virus (HaCPV) on infected midgut cotton bollworm (Helicoverpa armigera) using transmission and scanning electron microscope. The symptoms on infected host larvae of the host, compared with healthy ones, were getting swollen with milky-white and fragile Histopathological examinations showed infection with HaCPV small polyhedral inclusion bodies (PIB) after 1 or 2 days which were observed in columnar cells of midgut. Virions were partially or completely occupied in a polyhedral matrix to form polyhedral inclusion bodies (PIB) at periphery of virogenic stroma. PIBs were measured 0.5 to 3.5 mm and virions about 46 nm in diameter. Microvilli of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytoplasmic polyhedrosis virus; Helicoverpa armigera; Histopathology; HaCPV.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400029

Malignant Catarrhal Fever in Brazilian cattle presenting with neurological syndrome
Provedor de dados: Brazilian Journal of Microbiology
Autores: Martins,Maira de S.N.; Castro,Alessandra M.M.G. de; Lima,Michele dos S.; Pinto,Vivian da S.C.; Silva,Thaís G. da; Fava,Claudia Del; Depes,Claudio Regis; Okuda,Liria H.; Pituco,Edviges M.
Abstract Malignant Catarrhal Fever (MCF) was investigated in the central nervous system of cattle with neurological syndrome. Two-hundred-ninety samples were analyzed by histology, and molecular methods to detect ovine herpesvirus type 2 (OvHV-2) were optimized and validated. The qualitative polymerase chain reaction (qualitative PCR) analytical sensitivity was 101 DNA copies/µL and found 4.8% (14/290) positive for OvHV-2. The quantitative polymerase chain reaction (qPCR) analytical sensitivity was 100 DNA copy/µL and 5.9% (17/290) positivity, with 47.1% (8/17) of the positive samples presenting histological evidence of non-purulent meningo-encephalitis. The qualitative PCR products (422 bp of the ORF75 region) were sequenced and submitted to phylogenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovine herpesvirus type 2 (OvHV-2); Histopathology; Qualitative PCR; Quantitative PCR; Phylogenetic analysis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200366

Short-term oral administration of risperidone induces pancreatic damage and hyperamylasemia in Sprague-dawley rats
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Shah,Rehmat; Subhan,Fazal; Sultan,Syed Muhammad; Ali,Gowhar.
Risperidone is an atypical antipsychotic acting mainly as a dopamine D2 and serotonin 5-HT2 receptors antagonist prescribed in the treatment of schizophrenia and various affective disorders. Risperidone has been reported to be associated with weight gain, panreatitis and type 2 diabetes mellitus. Various mechanisms of risperidone-induced toxicities have been reported but the histology of tissues especially pancreas has never been studied. Therefore, the current study was designed to elucidate the toxic effects of chronic administration of risperidone on pancreas, liver and kidneys. Animals (rats) of either gender were divided into two groups, the risperidone and control groups. Risperidone was administered in a dose of 2.5 mg/kg/d for three weeks. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Risperidone/antipsychotics/oral administration/effects; Histopathology; D2 antagonist; Pancreas.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000400629

Evaluation of antiarthritic activity of ginkgolic acid against Freund’s adjuvant induced arthritic rat model
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Zhang,Ziqiang; Wang,Xiaogang; Li,Pengshan; Bai,Minghua; Qi,Wenbing.
This study aimed to analyze the antiarthritic activity of ginkgolic acid against the Complete Freund’s Adjuvant (CFA)-induced arthritis in rats. Arthritis was induced through an intradermal injection of CFA (0.1 mL) at the right hind footpad of adult Wistar Albino rats. Ginkgolic acid was administered orally at doses of 25 mg/kg and 50 mg/kg, respectively, once daily via gavage for 25 days upon inducing arthritis. Indomethacin was administered orally at a dose of 3 mg/kg twice in a week which served as positive control group. The animals were sacrificed and subjected to biochemical and histopathological analysis upon completion of treatment. Ginkgolic acid was able to reverse the arthritic effect (p &lt; 0.01) induced by CFA in a dose dependent manner....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ginkgolic acid; Complete Freund’s Adjuvant (CFA); Osteoarthritis; Antioxidant; Anti-inflammatory; Histopathology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100617

The effect of single-bulb garlic oil extract toward the hematology and histopathology of the liver and kidney in mice
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Lestari,Sri Rahayu; Rifai,Muhaimin.
Single garlic has been used as a traditional medicine for hypercholesterolemia and increasing stamina. The aim of this research was to analyze the effect of single-bulb garlic oil (SGO) extract toward hematology and histopathology liver and kidney in mice. Male mice (strain Balb-C, 12 weeks old, weight of 28±3 g) was treated by SGO for 28 days (once per days) with various doses K- (Normal); K+ (SGO 0.0 mg/kg BW); T1 (SGO 6.25 mg/kg BW); T2 (SGO 12.5 mg/kg BW); T3 (SGO 25.0 mg/kg BW); T4 (SGO 50.0 mg/kg BW). The end of the treated mice was sacrificed. Blood was collected to analyze hematology. Liver and kidney were collected then made microanatomy slide with Hematoxylin-Eosin staining. Parameters of hematology are the levels of hemoglobin, hematocrit,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hematology; Histopathology; Single-bulb garlic oil extract.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100560

Toxicity assessment of the alcoholic leaves extract of Reinwardtia indica
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Upadhyay,Prabhat; Shukla,Rashmi; Tiwari,Kavindra Nath; Dubey,G P; Mishra,Sunil Kumar.
The present study aimed to evaluate the safety of the alcoholic leaves extract of Reinwardtia indica in Charles foster rats through an acute and sub-acute oral administration.For assessment of acute oral toxicity test, ratswere orally treated with single dose of the alcoholic leaves extract of Reinwardtia indica at the doses of 50, 250, 500, 1000 2000 and 5000 mg/kg. In sub-acute toxicity study, using the OECD guidelines no. 407, the extract was administered at the doses of 50, 250, 500, 1000, 2000 mg/kg/day for 28 consecutive days and at the dose of 2000 mg/kg satellite group also used for 6 weeks.In acute toxicity above mentioned doses neither showed mortality nor exterior signs of toxicity. In sub-acute, study no significant changes found in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reinwardtia indica; Biochemical test; Hematological test; Histopathology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100511

Oxidative stress and histopathologic biomarkers of exposure to bisphenol-A in the freshwater fish, Ctenopharyngodon idella
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Faheem,Mehwish; Lone,Khalid Parvez.
ABSTRACT Bisphenol-A (BPA) belongs to the family of endocrine disrupting chemicals (EDCs) and it is used in the production of polycarbonate plastic and epoxy resins. The reproductive toxicity of BPA is well documented but it also exerts its toxic effects through multiple pathways especially by inducing a state of oxidative stress and causing damage to the vital organs. In the present study, histopathologic and oxidative damage caused by BPA in liver and kidneys of fresh water cyprinid, Ctenopharyngodon idella was evaluated. LC50 of BPA for Ctenopharyngodon idella was determined by probit regression analysis. Fish were exposed to a sublethal concentration of BPA i.e. 3.2 ppm (1/2 LC50) for 14 days. Histologic studies revealed that BPA caused degenerative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bisphenol-A/effects; Histopathology; Ctenopharyngodon idella/endocrine disrupting chemicals/Oxidative stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300624

Appraisal of acute oral toxicity of glucuronoxylan hydrogel from Mimosa pudica seeds
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Muhammad,Gulzar; Hussain*,Muhammad Ajaz; Ashraf,Muhammad Umer; Naeem-ul-Hassan,Muhammad; Bukhari,Syed Nasir Abbas.
Glucuronoxylan hydrogel (GXH) isolated from M. pudica seeds was assessed for acute toxicology in albino mice that were alienated into four groups. Three groups, i.e., II, III and IV received GXH at a dose of 1, 2 and 5 g/kg, respectively while group I was retained untreated and provided routine diet. After administering GXH, mice were examined for vomiting, diarrhea, allergy and tremors for 8 h. All animals were carefully observed for food and water consumption at 1, 2, 3, 7 and 14 day after administering GXH. At the end of studies, blood samples were drawn for investigation of hematological and biochemical parameters. All animals were sacrificed, relative body weight of vital organs was calculated and their histopathology was studied. It was concluded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glucuronoxylan; Acute toxicity; Histopathology; Toxicology; Mimosa pudica.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000300619

Oral tumors in dogs: clinical aspects, exfoliative cytology and histopathology
Provedor de dados: Ciência Rural
Autores: Felizzola,Cláudia Ronca; Stopiglia,Angelo João; Araújo,Ney Soares de.
In order to establish the diagnosis and prognosis of tumors of the oral cavity, a comparative study was carried out in 130 dogs considering age, sex, breed, clinical aspects, exfoliative cytology as well as histopathology. Exfoliative cytology revealed: 100% negative for benign non-odontogenic tumors, 97.91% negative benign odontogenic tumors and 77.92% positive for malignant tumors. Histopathology showed: 59.23% malignant tumors (33.08% malignant melanoma, 9.23% squamous cell carcinoma, 5.38% osteosarcoma, 2.31% fibrosarcoma, 2.31% angiosarcoma, 1.54% malignant mesenchymal tumors, 1.54% malignant fibrohistiocytoma, 1.54% lymphoma, 0.77% leyomyosarcoma, 0.77%% epithelioid sarcoma and 0.77% angiofibrosarcoma); 36.92% benign odontogenic tumors (25.38%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oral cancer; Exfoliative cytology; Histopathology; Dogs.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781999000300020

Bartholin’s gland adenoma in a Saanen goat
Provedor de dados: Ciência Rural
Autores: Moreira,Jessica Regina; Oliveira,Thalita Evani Silva de; Tongu,Eriky Akio de Oliveira; Leite,Raissa Oliveira; Nogueira,Geison Morel; Michelazzo,Mariana de Mello Zanim; Delfiol,Diego José Zanzarini; Saut,João Paulo Elsen; Headley,Selwyn Arlington.
ABSTRACT: Tumors affecting Bartholin’s gland are considered rare in human medicine; there are few reports in the veterinary literature, with descriptions occurring only in cows. This article described the clinical and pathological findings associated with Bartholin’s gland adenoma in a goat. Clinically, a 7-year-old pregnant Saanen goat presented bilateral enlargement of the vulva that did not regress spontaneously after parturition. Grossly, these vulvar masses were multilobulated, contained cystic areas from which oozed a whitish fluid. Histopathology revealed an adenoma characterized by the proliferation of irregularly shaped neoplastic epithelial cells that formed tubular to glandular-like structures. These neoplastic cells demonstrated moderate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histopathology; Ki-67 protein; Adenoma; Major vestibular glands.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000100501

Parasite load, iNOS and cytokine profiles, and histopathological aspects of Leishmania infantum infection in dogs with different clinical presentations
Provedor de dados: Ciência Rural
Autores: Vasconcelos,Tassia Cristina Bello de; Bruno,Sávio Freire; Miranda,Luisa Helena Monteiro de; Conceição-Silva,Fátima; Belo,Vinícius Silva; Figueiredo,Fabiano Borges.
ABSTRACT:  Visceral leishmaniasis (VL) is a zoonotic disease with a canine urban reservoir in South America. Dogs from an endemic area within Brazil, which were naturally infected with Leishmania infantum, and those presenting severe clinical (SC), mild, or no clinical (MNC) disease, were evaluated. Parasite load, histopathology, and cytokine and iNOS mRNA expressions were assessed in the spleen and liver in order to determine the potential markers for disease susceptibility or resistance. As a result, dogs with both SC and MNC had high parasite loads; IFN-γ was the most expressive cytokine in both organs, along with IL-6 and IL-4 being detected in the spleen and liver, and IL-10 only in liver. The hepatic tissue presented higher medians for IFN-γ and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Visceral leishmaniasis; Immunopathology; Canine infection; Histopathology; Canine cytokines.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001000501

Segmental hypoplasia of the spinal cord and syringomyelia in a calf
Provedor de dados: Ciência Rural
Autores: Souza,Luciana Aparecida de; Lopes,Samara de Paula; Daoualibi,Yasmin; Mósena,Ana Cristina Sbaraini; Gonçalo,Vinícius Vasconcellos da Cruz; Veiga,Cristiano Chaves Pessoa da; Spíndola,Bruno Ferreira; Silva,Wanessa Pereira da; Ubiali,Daniel Guimarães; Caldas,Saulo Andrade.
ABSTRACT: Congenital malformations are functional and structural changes in organ systems, tissues, or organs that may develop during the embryonic or fetal phase. Spinal cord malformations, such as segmental hypoplasia of the spinal cord (SHSC) and syringomyelia, are rare in bovines. A Girolando calf from Valença, Rio de Janeiro, was admitted to the Veterinary Hospital of Universidade Federal Rural do Rio de Janeiro because of motor incoordination. Clinical evaluation revealed a 5-cm depression area in the spine at the dorsal line of the thoracic region. Neurological examination revealed reduced proprioception, pelvic limb extension with increased nociceptive activity, and reduced anal reflex. In radiographic examination, the body of the T11 vertebra had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Congenital malformations; Myelodysplasia; Segmental hypoplasia of the spinal cord; Histopathology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300551

Infection of silkworm larvae by the entomopathogenic fungus Metarhizium anisopliae
Provedor de dados: Ciência Rural
Autores: Ribeiro,Lucineia de Fátima Chasko; Tavares,Jeronimo; Silva,Sóstenez Alexandre Vessaro; Alvez,Luis Francisco Angeli; Loth,Eduardo Alexandre; Brancalhão,Rose Meire Costa.
ABSTRACT: The isolate E9 of Metarhizium anisopliae was used in commercial hybrids of Bombyx mori larvae to evaluate its biological effect. Symptomatological analyses showed typical signs of fungal infection. Histopathology revealed the presence of large numbers of hemocytes in the hemocoel, and on the sixth dpi the bodies of the insects appeared to be colonised by the fungus. The isolate E9 is pathogenic to larvae B. mori and; therefore, death of the insects was caused by the colonization of fungus in the epidermal and mesodermal tissues.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bombyx mori; Histopathology; Metarhizium anisopliae; Fungal infection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400151

Wobbly syndrome in an Africa pygmy hedgehog (Atelerix albiventris): neuropathological and immunohistochemical studies
Provedor de dados: Ciência Rural
Autores: Oliveira,Letícia Batelli de; Moreira,Matheus Vilardo Lóes; Santos,Willian Henrique de Magalhães; Stuart,Líslie Caroline Oliveira; Castro,Maria Dolors Pi; Balle,Martí Pumarola; Ecco,Roselene.
ABSTRACT:  A three-year-old female African pygmy hedgehog (Atelerix albiventris), born and domiciled in Brazil, presented apathy, prostration, and difficulty to stay standing. Its parents were siblings but did not present clinical signs related to this condition. As its clinical condition worsened, the animal was euthanized and referred for necropsy. No gross lesions were found in the central nervous system (CNS). Histologically, there was vacuolation with axonal degeneration in the white matter of the CNS and in peripheral nervous tissue. The Kluver-Barrera (KB) stain confirmed demyelination in vacuolated areas. Immunohistochemistry using several neural markers confirmed astrocytosis and microgliosis associated with vacuolated areas. In addition, there...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central nervous system; Degenerative disease; Myelopathy; Vacuolation; Histopathology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100550

Histopathological analysis of the reproductive system of male dogs experimentally infected with Toxoplasma gondii
Provedor de dados: Ciência Rural
Autores: Arantes,Tiago Pereira; Lopes,Welber Daniel Zanetti; Ferreira,Roberta Machado; Pieroni,Juliana de Souza Pinto; Pinto,Vanessa Marigo Rocha; Santos,Thaís Rabelo dos; Sakamoto,Claúdio Alessandro; Costa,Alvimar José da.
The present research aimed to describe possible histopathological alterations in the reproductive system (testicles and epididymis) of male dogs experimentally infected with Toxoplasma gondii. Canines (n=10) serologically negative for T. gondii were selected and distributed into three experimental groups: GI, 3 inoculated with 2.0 x 10(5)P strain oocysts; GII, 3 infected with 1.0 x 10(6)RH strain tachyzoites; and GIII, 4 control dogs. Antibody research (IFAT) against T. gondii was realized. Toxoplasma gondii infection was confirmed by seroconversion of the 6 males infected with tachyzoites and oocysts from postinoculation day (PID) 7 and 14, respectively. At PID 70, all dogs were submitted to orchiectomy and testicle and epididymis samples were collected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Experimental infection; Toxoplasmosis; Histopathology; Testicle; Epididymis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000700026

Myxozoan infection in the muscle layer of the intestine of Rhamdia quelen from the Amazon River Basin, Brazil
Provedor de dados: Ciência Rural
Autores: Abrunhosa,Jacqueline Pompeu; Silva,Michele Velasco Oliveira da; Sindeaux Neto,José Ledamir; Santos,Patrícia de Fátima Sacco dos; Matos,Patrícia Santos; Sanches,Osimar de Carvalho; Matos,Edilson Rodrigues.
ABSTRACT: The present study investigated the morphology and pathology associated with the occurrence of cysts caused by Myxobolus sp. in the intestine of the silver catfish Rhamdia quelen . Comparisons with the other Myxobolus species that infect the intestines of cyprinids and siluriforms revealed that the pyriform spores of Myxobolus sp. are similar in shape to those described previously in M. miyairii, M. duodenalis and M. cunhai, but different in size. Morphometric analyses revealed that mature spores of Myxobolus sp. (10.9 x 5.1μm) are smaller than those of most species except M. cunhai (10.0 x 5.0μm), which has been described infecting the Brazilian catfish  Pimelodus clarias , although the spores differ morphologically in relation to the shape of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myxobolus; Histopathology; Fish parasites; Catfish; Neotropical.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001102024

Methods for glomerular quantification in dogs: a comparative study
Provedor de dados: Ciência Rural
Autores: Costa,Caio Augusto Leles; Lima,Charles Silva de; Uscategui,Ricardo Andres Ramirez; Silva,Gyl Eanes Barros; Crivellenti,Leandro Zuccolotto.
ABSTRACT:  It was evaluated the different methodologies for glomerular enumeration described in the literature in a quantitative, double-blind study on the number of glomeruli present in kidney biopsy specimens obtained using a Tru-cut-type biopsy needle. Eighteen samples were taken (n=18) from various regions of canine kidneys harvested immediately after euthanasia. Sample collection was carried out using Tru-cut-type, semi-automated, 16 gauge needles. Reading and evaluation of the specimens were performed independently by four researchers by means of eye loupe inspection, light microscopy, light microscopy with a reduced condenser aperture, and dissection microscopy. Samples were also subjected to histopathological evaluation for comparison purposes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glomerulopathy; Histopathology; Light microscopy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300600

Histopathological findings and detection of parasites in the eyes of dogs infected naturally with Leishmania chagasi
Provedor de dados: Ciência Rural
Autores: Brito,Fábio Luiz da Cunha; Laus,José Luiz; Tafuri,Wagner Luiz; Figueiredo,Maria Marta; Silva Júnior,Valdemiro Amaro; Maia,Frederico Celso Lyra; Alves,Leucio Câmara.
The objective of the present study was to investigate the histopathological alterations and detection of parasites that occur in the eyes of dogs naturally infected with Leishmania chagasi. The eyes of 25 dogs with a positive parasitological and serological exam for L. chagasi were submitted to routine ophthalmic examination. Fragments were obtained from the eyeball and were analyzed by immunohistochemistry and histopathology. Among the structures studied, the conjunctiva of the third eyelid was the tissue most frequently stained for L. chagasi. Histopathological analysis revealed a predominantly mononuclear inflammatory infiltrate whose intensity ranged from discrete to intense in the various ocular structures. Vascular congestion and perivasculitis were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Leishmaniasis; Ocular abnormalities; Histopathology; Immunohistochemistry.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500022

Multisystemic eosinophilic epitheliotropic disease in a horse in Brazil
Provedor de dados: Ciência Rural
Autores: Laisse,Cláudio João Mourão; Nascimento,Lismara Castro do; Panziera,Welden; Soares,Elizabeth Caldas; Fernandes,Denise Bicca; Westphalen,Júlio César; Sonne,Luciana; Pavarini,Saulo Petinatti; Driemeier,David.
ABSTRACT: Equine multisystemic eosinophilic epitheliotropic disease (MEED) is a rare disease, characterized by eosinophilia and eosinophilic infiltration of several organs. A 5-year-old horse presented pruritus, areas of alopecia, and moderate eosinophilia. The horse was treated with corticosteroids and antibiotics without substantial improvement; and after the disease progressed to fever, diarrhea, gastric reflux and progressive weight loss. Due to poor prognosis the horse was euthanized. Necropsy revealed poor body condition, multiple to coalescing foci of alopecia, with epidermal ulcerations and crusts on the head and distal parts of the limbs. The proximal duodenum was enlarged, with 3 intraluminal nodules. Histopathological evaluation revealed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eosinophilia; Eosinophilic granuloma; Histopathology; Horse.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500552