Consulta: subjectFacets:"Erythrocytes"
Registros recuperados: 10
Data/hora: 03/06/2024 04:52:39

Hemolitic action of Naja naja atra cardiotoxin on erythrocytes from different animals
Provedor de dados: 80
Autores: Troiano,J. C.; Gould,E. G.; Gould,I.
A comparative study on the sensitivity of erythrocytes from different vertebrate species (avian, mammalian and reptilian) to the hemolytic action caused by cardiotoxin isolated from Naja naja atra venom was carried out. Cardiotoxin was able to induce direct hemolysis in washed erythrocytes from several animals, except for llama. The EC50 values from hemolysis of the most sensitive (cat) and the most resistant (snake) animal varied approximately tenfold. According to the cell behavior, it was possible to characterize four types of behavior: The first was observed in cat, horse and human cells; the second in rat, rabbit and dog erythrocytes; and the third only in llama erythrocytes, which were resistant to cardiotoxin concentrations up to 300 µg/ml. Finally,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemolysis; Cobra; Venom; Erythrocytes; Animals.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000100004

Morphometric Parameters of Erythrocytes in Juvenile Mandarin Ducks Aix galericulata
Provedor de dados: 89
Autores: Prokić,VS; Davidov,I; Belić,B; Novakov,N; Aleksić,J; Lakić,I.
ABSTRACT The morphometric parameters of erythrocytes in Mandarin ducks- Aix galericulata have never been subjected to study even though this species is common in aviculture. The aim of this study is to investigate the morphometric parameters of erythrocytes in juvenile Mandarin ducks. A total of 1500 erythrocytes obtained from thirty Mandarin ducks were analysed. The smears of the peripheral blood were stained using Diff-Quik® stain method, and the length and width of erythrocytes were measured using ImageJ program. The average length of the measured erythrocytes was 11.879 µm. The maximal measured length of the erythrocytes was 16.049 µm, and the minimal measured length was 5.668 µm. The average width of the measured erythrocytes was 6.160 µm. The maximal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood smears; Erythrocytes; Mandarin duck; Morphometric parameters.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200343

Características hematológicas de teleósteos brasileiros: II. Parâmetros sangüíneos do Piaractus mesopotamicus Holmberg (Osteichthyes, Characidae) em policultivo intensivo
Provedor de dados: 104
Autores: Tavares-Dias,Marcos; Tenani,Rosilene A; Gioli,Leonardo D; Faustino,Christiane D.
Hematological parameters of freshwater fish Piaractus mesopotamicus (Holmberg, 1887) kept in an intensive polyculture system were determined. The correlations among these parameters as well as those between the parameters and the biometric data (total weight and standard length) were also analyzed. Erythrocytes count was 1.708±0.42 x 10(6)/µl, hemoglobin 6.6±2.0 g% of blood and hematocrit 32.5±4.6%, mean corpuscular volume (MCV) 209.8±69.5%, mean corpuscular hemoglobin (MCH) 40.2±5.6 pg and mean corpuscular hemoglobin concentration (MCHC) 21.4±8.4%. The percentage of defense blood cells including leucocytes and thrombocytes, was studied. The percentage of thrombocytes was 61.4±10.0%, lymphocytes 21.7±1.8%,neutrophils 10.4±11.0%, monocytes 4.7±3.3% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piaractus mesopotamicus; Blood; Erythrocytes; Freshwater fish; Leucocytes; Thrombocytes.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200008

Ecotoxicity of natural insecticide based on tobacco plant extract and hematological effects on the Nile tilapia (Oreochromis niloticus).
Provedor de dados: 3
Autores: Millan, Debora Cristina; Centro Universitário Central Paulista; Shiogiri, Natália Sayuri; Universidade Federal de São Carlos; Souza, Naiara Elisabete da Silva de; Universidade Federal de São Carlos; Silva, Hugo Ribeiro da; Universidade Federal de São Carlos; Fernandes, Marisa Narciso; Universidade Federal de São Carlos.
Natural insecticides derived from plant extracts have been used as an alternative to synthetic products in order to reduce environmental contamination. The present study aimed to examine the effects of Fumydro®, a natural insecticide based in the tobacco plant Nicotiana tabacum, on the Nile tilapia (Oreochromis niloticus) by determining the 48-h LC50 and evaluating their effects on hematological variables. Adult specimens of O. niloticus were exposed to four Fumydro® concentrations (200, 300, 400 and 500 μL L-1). The 48-h LC50 of Fumydro® was determined as 370 ± 50 μL L-1. Surviving fish showed increasing in the red blood cells, hemoglobin concentration, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration. The thrombocytes did not...
Palavras-chave: Ecologia toxicity; Erythrocytes; Leukocytes; Teleost; Thrombocytes 2.05.03.00-8.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131

Hematological parameters of Iranian cichlid Iranocichla hormuzensis: Coad, 1982 (Perciformes) in Mehran River
Provedor de dados: 42
Autores: Daneshvar,Ehsan; Ardestani,Mahsa Y.; Dorafshan,Salar; Martins,Mauricio L.
This study describes the hematological parameters in Iranocichla hormuzensis, an Iranian freshwater cichlid important as ornamental and food fish. Forty fish were captured with seine net at Mehran river Hormozgan province, Iran. Blood was used to determine the total counts of red blood cells (RBC) and white blood cells (WBC), hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC) and morphometric data of erythrocytes. The Iranian fish showed lower RBC and WBC values than the other cichlids (Oreochromis niloticus, O. aureus, O. mossambicus, O. hybrid, Cichlasoma dimerus and Cichla monoculus). Hematocrit did not vary among the species, but MCV, MCH and MCHC in I. hormuzensis were higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cichlidae; Iran; Hematology; Erythrocytes.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400009

Ultrastructural changes of erythrocytes in whole blood after exposure to prospective in silico-designed anticancer agents: a qualitative case study
Provedor de dados: 48
Autores: Repsold,Lisa; Mqoco,Thandi; Wolmarans,Elize; Nkandeu,Sandra; Theron,Joji; Piorkowski,Tomek; du Toit,Peet; van Papendorp,Dirk; Joubert,Annie Margaretha.
BACKGROUND: Novel, in silico-designed anticancer compounds were synthesized in our laboratory namely, 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10),15-tetraen-17-ol (ESE-15-ol) and 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (ESE-16). These compounds were designed to have improved bioavailability when compared to their source compound, 2-methoxyestradiol. This theoretically would be due to their increased binding affinity to carbonic anhydrase II, present in erythrocytes. Since the novel compounds under investigation are proposed to be transported within erythrocytes bound to carbonic anhydrase II, the morphological effect which they may exert on whole blood and erythrocytes is of great significance. A secondary outcome included revision of previously...
Tipo: Journal article
Palavras-chave: Whole blood; Morphology; ESE-15-ol; ESE-16; Anticancer; Erythrocytes.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100039

Genotoxic activity of the insecticide Nuvacron (Monocrotophos) detected by the micronucleus test in bone marrow erythrocytes of mice and in CHO cells
Provedor de dados: 54
Autores: Peitl Jr,Paulo; Sakamoto-Nojo,Elza T.; Cólus,Ilce M. de Syllos.
The organophosphorus insecticide Nuvacron (Monocrotophos) is a very toxic agent widely utilized in Brazilian agriculture. To evaluate the clastogenic potential of this insecticide, in vivo and in vitro micronucleus (MN) assay experiments were carried out on Swiss mice and on Chinese hamster ovary (CHO) cells, respectively. Nuvacron administered at doses of 2.5 and 5.0 mg/kg induced a statistically significant increase in the frequencies of MN detected in polychromatic bone marrow erythrocytes from animals (six/group) treated ip 24 h before. Exponentially growing CHAO cells were treated continuously (16h) with Nuvacron diluted in water to final concentrations of 1, 10, 100, 200, and 400 mug/ml. Three experiments were carried out using the cytokinesis-block...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genotoxic; Insecticide Nuvacron; Micronucleus; Bone marrow; Erythrocytes; Mice; CHO cells.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400006

Partial recovery of erythrocyte glycogen in diabetic rats treated with phenobarbital
Provedor de dados: 56
Erythrocytes may play a role in glucose homeostasis during the postprandial period. Erythrocytes from diabetic patients are defective in glucose transport and metabolism, functions that may affect glycogen storage. Phenobarbital, a hepatic enzyme inducer, has been used in the treatment of patients with non-insulin-dependent diabetes mellitus (NIDDM), increasing the insulin-mediated glucose disposal. We studied the effects of phenobarbital treatment in vivo on glycemia and erythrocyte glycogen content in control and alloxan-diabetic rats during the postprandial period. In control rats (blood glucose, 73 to 111 mg/dl in femoral and suprahepatic veins) the erythrocyte glycogen content was 45.4 ± 1.1 and 39.1 ± 0.8 µg/g Hb (mean ± SEM, N = 4-6) in the femoral...
Palavras-chave: Erythrocytes; Glycogen; Phenobarbital; Diabetes mellitus; Erythrocyte metabolism; Alloxan.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000500014

Slaughterhouse blood as a perfusate for studying myocardial function under ischemic conditions
Provedor de dados: 56
Autores: Bendjelid,K.; Canet,E.; Gasche,Y.; Andre-Fouet,X.; Revel,D.; Janier,M.
Metabolic studies using the in vitro non-recirculating blood-perfused isolated heart model require large volumes of blood. The present study was designed to determine whether heterologous pig blood collected from a slaughterhouse can be used as perfusate for isolated pig hearts perfused under aerobic and constant reduced flow conditions. Eight isolated working pig hearts perfused for 90 min at a constant flow of 1.5 ml g-1 min-1 with non-recirculated blood diluted with Krebs-Henseleit bicarbonate buffer at a hematocrit of 23% were compared to eight hearts subjected to the same protocol but perfused only with Krebs-Henseleit bicarbonate buffer solution. Hearts were paced at 100 bpm and subjected to aerobic perfusion at 38ºC. Hearts were weighed before...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myocardium; Ischemia; Erythrocytes; Edema; Reperfusion injury.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000100006

Ginkgo biloba extract (EGb 761) attenuates oxidative stress induction in erythrocytes of sickle cell disease patients
Provedor de dados: 60
Autores: Furman,Aline Emmer Ferreira; Henneberg,Railson; Hermann,Priscila Bacarin; Leonart,Maria Suely Soares; Nascimento,Aguinaldo José do.
Sickle cell disease promotes hemolytic anemia and occlusion of small blood vessels due to the presence of high concentrations of hemoglobin S, resulting in increased production of reactive oxygen species and decreased antioxidant defense capacity. The aim of this study was to evaluate the protective action of a standardized extract of Ginkgo biloba (EGb 761), selected due to its high content of flavonoids and terpenoids, in erythrocytes of patients with sickle cell anemia (HbSS, SS erythrocytes) subjected to oxidative stress using tert-butylhydroperoxide or 2,2-azobis-(amidinepropane)-dihydrochloride, in vitro. Hemolysis indexes, reduced glutathione, methemoglobin concentrations, lipid peroxidation, and intracellular reactive oxygen species were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ginkgo biloba; Oxidative stress; Erythrocytes; Azo compounds; Sickle cell anemia.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000400009