Consulta: subjectFacets:"Infectious diseases"
Registros recuperados: 27
Data/hora: 07/06/2024 06:37:13

The Mathematical Biology of Human Infections
Provedor de dados: 7
Autores: Nowak, Martin A; Institute for Advanced Study; nowak@ias.edu.
Humans are constant victims of infectious diseases. Biomedical research during this century has led to important insights into the molecular details of immune defense. Yet, many questions relating to disease require a quantitative understanding of the complex systems that arise from the nonlinear interactions between populations of immune cells and infectious agents. Exploration of such questions has lead to a newly emerging field of mathematical biology describing the spread of infectious agents both within and between infected individuals. This essay will discuss simple and complex models of evolution, and the propagation of virus and prion infections. Such models provide new perspectives for our understanding of infectious disease and provide guidelines...
Tipo: Peer-Reviewed Reports
Palavras-chave: CTL response; HIV; Antivirals; Epidemiology; Immune response; Infectious diseases; Mathematical biology; Models of evolution; Prions; Resistance; Treatment; Viruses.
Ano: 1999

Vacina toxóide no controle da linfadenite caseosa.
Provedor de dados: 14
Autores: ALVES, F. S. F.
bitstream/item/26709/1/COT-42.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Ceará; Caprino; Linfadenite caseosa; Doença animal; Bactéria; Vacina; Corynebacterium pseudotuberculosis; Goats; Caseous lymphadenitis; Animal diseases; Infectious diseases; Vaccines; Brazil.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514971

Implicações do uso de solução de formol em abscessos, para o controle da Linfadenite caseosa.
Provedor de dados: 14
Autores: ALVES, F. S. F.; PINHEIRO, R. R.; OLIVEIRA, A. A. da F.
bitstream/item/26685/1/DOC-52.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Formol; Chemical disease control.; Abscesses; Controle; Caprino; Ovino; Doença animal; Linfadenite caseosa; Abscesso; Controle químico; Corynebacterium Pseudotuberculosis.; Goats; Sheep; Caseous lymphadenitis; Infectious diseases; Animal diseases; Disease control.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/532490

L'adaptation ecophysiologique et sanitaire de l'ecrevisse turque Astacus leptodactylus a des milieux saumatres: Contribution a l'astaciculture
Provedor de dados: 5
Autores: Barbe, D; Lautier, J; Vernet, G; Vey, A.
This influence of salt media on different aspects of biological cycle and on most common pathogenic agents of Turkish freshwater crayfish Astacus leptodactylus is investigated survival and growing of juveniles O super(+) and intermediary individuals 1 super(+) are also studied. Total osmotic metabolism and reproduction, have been recorded. It appears that youngest individuals are particularly sensitive to low salinities (7 ppt.). Intermediary ones are more resistant nevertheless salinity does not improve neither survival nor growing. Copulation, laying and pleopod egg fixation are particularly affected by salt waters. The only promising application of salinity parameter on astaciculture could be whether prophylactic or curative treatment with concentrated...
Tipo: Text
Palavras-chave: Astacus leptodactylus; Malacostraca; Infectious diseases; Sexual reproduction; Growth; Mortality; Survival; Osmotic adaptations; Crayfish culture; Pathology; Metabolism; Salinity; Ecophysiology; Astaciculture; Régulation osmotique; Reproduction; Survie; Croissance; Pathologie; Ecophysiologie; Salinité; Astacus leptodactylus; Ecrevisse.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1185.pdf

Appearance and spread of diseases among bivalve molluscs in the northern hemisphere in relation to international trade
Provedor de dados: 5
Autores: Renault, Tristan.
Bivalve mollusc culture is a well-developed marine aquaculture activity in many countries around the world, notably in the northern hemisphere. During the development of this activity, numerous countries have been confronted with infectious diseases of varying severity and duration. Research has been conducted to determine the aetiology, epidemiology and control measures for these epizootics. Major epizootics in bivalve molluscs have been caused by viruses, bacteria, fungi and protozoan parasites. Moreover, important commercial relations exist in marine mollusc culture between different geographical areas. This must be taken into account in explaining the appearance and the spread of some infectious diseases in several countries around the world. The...
Tipo: Text
Palavras-chave: Northern hemisphere; International trade; Infectious diseases; Bivalve molluscs; Mollusques bivalves; Maladies infectieuses; Hémisphère Nord; Commerce internatioanal.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/publication-2913.pdf

Diseases of cultured molluscs in Australia
Provedor de dados: 5
Autores: Lester, R.
Three mollusc species are cultured commercially in Australian tropical and warm temperate waters: the Sydney rock oyster Saccostrea commercialis , the pearl rock oyster is susceptible to two protozoans: Marteilia sydneyi , which is the cause of QX Disease and infects oysters during the summer; and Mikrocytos roughleyi which is associated with winter mortality. It also harbours mudworm, Polydora websteri a parasite farmers try to avoid by growing oysters on racks. Transported pearl oysters Pinctada maxima die with heavy infections of Vibrio harveyi . Cultured giant clams Tridacna gigas are pestered by pyramidellid snails and some carry Perkinsus sp., a protozoan common in reef bivalves. Deaths in mollusc hatcheries have been associated with Vibrio tubiashi...
Tipo: Text
Palavras-chave: Protozoa; Alteromonas; Vibrio tubiashi; Perkinsus; Vibrio harveyi; Polydora websteri; Mikrocytos roughleyi; Saccostrea commercialis; Pinctada maxima; Tridacna gigas; Bivalvia; Parasites; Mortality; Pearl culture; Infectious diseases; Parasitic diseases.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1468.pdf

Infectious pathology in mollusc and shrimp hatcheries
Provedor de dados: 5
Autores: Mialhe, Eric.
Development of aquaculture has been linked to zootechnical mastering of larval production in hatcheries. Regular and excessive use of antibiotics (antifungal or antibacterial) may thus also be reduced, permitting to limit release of these products in sea-water and, consequently, avoiding progressive selection of resistant-strains.
Tipo: Text
Palavras-chave: Viruses; Infectious diseases; Epidemiology; Pathogens; Bacterial diseases; Pathology; Larval development; Mollusc culture; Shrimp culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1487.pdf

A review of the known hosts geographical range and current diagnostic procedures for the virus diseases of cultured penaeid shrimp
Provedor de dados: 5
Autores: Lightner, D; Bell, T; Redman, R.
At least six virus diseases are presently known in cultured penaeid shrimp. Each of these six penaeid virus diseases (BP = Baculovirus penaei ; MBV = Penaeus monodon -type baculovirus (including PBV of Australian penaeids); BMN = baculoviral midgut gland necrosis; HPV = hepatopancreatic parvo-like virus; IHHNV = infectious hypodermal and hematopoietic necrosis virus; and REO = reo-like virus of the hepatopancreas) may be comprised by a multitude of individual strains, some of which are highly pathogenic to some penaeids, while being of little importance to others.
Tipo: Text
Palavras-chave: Baculovirus penaei; Penaeus japonicus; Penaeus monodon; Malacostraca; Marine crustaceans; Necroses; Infectious diseases; Viruses; Diseases.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1481.pdf

Antimicrobial activity of a marine isolate of Pseudomonas cepacia k2 from ruditapes decussatus
Provedor de dados: 20
Autores: Chahad Bourouni, O.; Ktari, L.; Boudabbous, A.; El Bour, M.
Une souche de Pseudomonas cepacia, designée K2, isolée à partir de la palourde Ruditapes decussatus a montré une activité antibactérienne significative contre un certain nombre de bactéries marines, y compris Aeromonas hydrophila, Aeromonas salmonicida et Vibrio anguillarum qui sont les bactéries pathogènes les plus fréquemment signalées dans l'environnement marin, responsables d’une forte mortalité des poissons et des crustacés. Cette souche K2 a montré une capacité d’inhibition très rapide dès le début de sa croissance (après 8h d'incubation). L'intensité de son activité est très importante et a tendance à augmenter avec le temps d'incubation. Les études préliminaires sur la nature de l'inhibition a indiqué qu'au moins l'une des substances...
Tipo: Journal Contribution
Palavras-chave: Infectious diseases; Pathogenic bacteria; Antibacterials; Aquaculture.
Ano: 2010
URL: http://hdl.handle.net/1834/4694

Determinación de moléculas que intervienen en el sistema inmune del camarón blanco (Penaeus vannamei) en respuesta al uso de inmunoestimulantes.
Provedor de dados: 20
Autores: Campa, A.I.
La acuacultura de crustáceos penaeidos constituye una actividad económicamente importante que genera elevados ingresos si se garantiza una producción óptima del mismo. Esta actividad está limitada en diferentes partes del mundo por enfermedades infecciosas provocadas entre otros, por bacterias, virus, hongos, parásitos y por el uso regular de antibióticos que han dirigido progresivamente a las poblaciones de cultivo a una situación crítica de resistencia. El estudio del sistema inmune en crustáceos comienza a ser una herramienta muy útil para el diseño de estrategias que permitan determinar y mejorar la respuesta del sistema de defensa del hospedero hacia los patógenos potenciales. Para ello, es requerido que las investigaciones básicas estén dirigidas a...
Tipo: Theses and Dissertations
Palavras-chave: 832; Crustacean culture; Infectious diseases; Immunity; Crustacean culture; Infectious diseases; Immunity; Http://aims.fao.org/aos/agrovoc/c_1985; Http://aims.fao.org/aos/agrovoc/c_34024; Http://aims.fao.org/aos/agrovoc/c_3802.
Ano: 2002
URL: http://hdl.handle.net/1834/3413

Recherche par « RT-PCR » des virus enteriques chez des moules (&lt;Mytilus galloprovincialis&gt;) et des palourdes (&lt;Ruditapes decussatus&gt;)
Provedor de dados: 20
Autores: Aouni, M.; Essebai El Amri, D.
Dans cette étude comparative, deux méthodes d'extraction de quatre types de virus entériques pathogènes pour l’homme (virus de l’hépatite A, l’astrovirus, le norovirus et l’entérovirus) contaminant des moules (Mytilus galloprovincialis) et des palourdes (Ruditapes decussatus) ont été évaluées par l’application de la technique « Perverse Transcriptase- Polymerase Chain Reaction : RT-PCR ». Les échantillons des mollusques bivalves analysés ont été prélevés entre le mois de mars 2000 et le mois de septembre 2001 dans différents sites naturels de la lagune de Bizerte et sans subir l’étape de purification. Les résultats obtenus montrent que le taux de détection des virus par RT-PCR est meilleur lorsque les virus sont extraits à partir de l’estomac et de...
Tipo: Journal Contribution
Palavras-chave: Digestive system; Human food; Infectious diseases; Marine molluscs; Pathogens; Public health; Mytilus galloprovincialis; Ruditapes decussatus; Digestive system; Public health; Infectious diseases; Pathogens.
Ano: 2005
URL: http://hdl.handle.net/1834/3755

Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (&lt;i&gt;Artemia&lt;/i&gt; spp.) used for prophylactic chemotherapy of fish
Provedor de dados: 27
Autores: Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P.
The brine shrimp &lt;i&gt;Artemia&lt;/i&gt; , an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in &lt;i&gt;&lt;i&gt;Artemia&lt;/i&gt; franciscana&lt;/i&gt;, a sensitive and specific analytical method was developed. It is based on homogenization of &lt;i&gt;Artemia&lt;/i&gt; nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C&lt;sub&gt;18&lt;/sub&gt; cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 µg/g with a sample quantity of 30 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia.
Ano: 1991
URL: http://www.vliz.be/imisdocs/publications/262329.pdf

Selected bacterial strains protect &lt;i&gt;Artemia&lt;/i&gt; spp. from the pathogenic effects of &lt;i&gt;Vibrio proteolyticus&lt;/i&gt; CW8T2
Provedor de dados: 27
Autores: Verschuere, L.; Heang, H.; Criel, G.R.J.; Sorgeloos, P.; Verstraete, W.
In this study &lt;i&gt;Vibrio proteolyticus&lt;/i&gt; CW8T2 has been identified as a virulent pathogen for &lt;i&gt;Artemia&lt;/i&gt; spp. Its infection route has been visualized with transmission electron microscopy. The pathogen affected microvilli and gut epithelial cells, disrupted epithelial cell junctions, and reached the body cavity, where it devastated cells and tissues. In vivo antagonism tests showed that pre-emptive colonization of the culture water with nine selected bacterial strains protected &lt;i&gt;Artemia&lt;/i&gt; juveniles against the pathogenic effects. Two categories of the selected strains could be distinguished: (i) strains providing total protection, as no mortality occurred 2 days after the experimental infection with &lt;i&gt;V....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic animals; Bacteria; Biological control; Brine shrimp culture; Disease control; Infectious diseases; Microbiological analysis; Pathogenic bacteria; Artemia; Vibrio proteolyticus.
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=45

Aerobic bacteria in oral cavity of Lancehead snakes (Bothrops atrox) with stomatitis
Provedor de dados: 3
Autores: Pereira, Heloisa Castro; Gomes, Dayane Olímpia; Hirano, Líria Queiroz Luz; Santos, André Luiz Quagliatto; Lima, Anna Monteiro Correia.
 Stomatitis is a common disease found on snake farms, and Gram-negative bacilli are the main etiological agents that play an important role as secondary sources of viral or parasitic infections. The purpose of this work was to identify the aerobic bacteria in the oral cavity of Bothrops atrox with stomatitis. Samples for microbiological examination were collected from 12 snakes bred on a commercial snake farm for venom extraction. Samples of the secretion in the oral cavity of each serpent presenting stomatitis were collected from fang sheath, using a cotton swab with sterile alginate. The samples were incubated and cultured on Petri dishes containing blood agar and XLD agar using the agar depletion technique. Bacterial growth occurred in all analyzed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.05.02.03-4 bacteriology; Infectious diseases; Reptilia; Squamata; Ophidia. Doenças Infecciosas de Animais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34625

Mechanism of action of probiotics
Provedor de dados: 52
Autores: Hemaiswarya,S; Raja,R.; Ravikumar,R.; Carvalho,Isabel S.
The modern diet doesn't provide the required amount of beneficial bacteria. Maintenance of a proper microbial ecology in the host is the main criteria to be met for a healthy growth. Probiotics are one such alternative that are supplemented to the host where by and large species of Lactobacillus, Bifidobacterium and Saccharomyces are considered as main probiotics. The field of probiotics has made stupendous strides though there is no major break through in the identification of their mechanism of action. They exert their activity primarily by strengthening the intestinal barrier and immunomodulation. The main objective of the study was to provide a deep insight into the effect of probiotics against the diseases, their applications and proposed mechanism of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-allergic; Gastrointestinal problems; Immunomodulation; Infectious diseases; Probiotics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100015

Top 10 evidence-based recommendations from the Brazilian Society of Infectious Diseases for the Choosing Wisely Project
Provedor de dados: 55
Autores: Pasqualotto,Alessandro C.; Almeida,Camila S.; Kliemann,Dimas A.; Barcellos,Guilherme B.; Queiroz-Telles,Flávio; Abdala,Edson; Resende,Mariangela; Batista,Filipe P.; Vidal,José E.; Rocha,Jaime; Raboni,Sonia M.; Cimerman,Sergio; Gales,Ana C.
ABSTRACT The Choosing Wisely Initiative aims to collect statements from medical societies all over the world on medical interventions that result in no benefit to patients, with the potential to cause harm. In this article we present the views of the Diagnostic Laboratory Group at the Brazilian Society of Infectious Diseases (SBI). Ten experts from SBI were asked to list 10 diagnostic tests that were perceived as unnecessary in the field of infectious diseases. After voting for the more relevant topics, a questionnaire was sent to all SBI members, in order to select for the most important items. A total of 482 votes were obtained, and the top 10 results are shown in this manuscript. The Choosing Wisely statements of SBI should facilitate clinical practice...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Choosing wisely; Quality; Safety; Infectious diseases; Microbiology; Diagnostic tests; Healthcare administration.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000500331

Health surveillance, biosafety and emergence and re-emergence of infectious diseases in Brazil
Provedor de dados: 55
Autores: Cardoso,Telma Abdalla de Oliveira; Navarro,Marli BM de Albuquerque; Costa Neto,Cristina; Moreira,Josino Costa.
The present paper presents compulsory notification data for infectious diseases and epidemiologic ones recorded at the Center for Strategic Information and Health Surveillance (CIEVS) for the period of March 2006 to April 2007. Data is presented in accordance with geographic distribution, time and risk classification of the etiologic agents found, according to Ministry of Health regulations. The importance of this epidemiologic surveillance system is presented, debating the main topics required for quality improvement and information analysis. It is concluded, from the analysis of epidemiologic events and their relation to risk management, that the compulsory notification system in Brazil is incomplete, irregular, delayed and, in a large percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosafety; Epidemiologic surveillance; Infectious diseases; Public health.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000500018

Immunogenetics and infectious diseases: special reference to the mayor histocompatibility complex
Provedor de dados: 55
Autores: Alves,Crésio; Souza,Thaisa; Meyer,Isadora; Toralles,Maria Betânia P.; Brites,Carlos.
Many studies have tried to identify genetic markers for infectious diseases, some of them have focused on human leukocyte antigens (HLA). The products of HLA genes interact with surface-specific receptors of T lymphocytes, resulting in activation of the host's immune response. Association of bacterial, viral, parasitic and fungal infections with the host's HLA has been widely investigated. The type and strength of this association differs among distinct populations, as well as among racial and/or ethnic groups. The new molecular methods for the identification of the HLA alleles, and the resulting new nomenclature, have contributed to a better understanding of this system. Unfortunately, this information has not been adequately transmitted to clinicians,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HLA; Infectious diseases; Major histocompatibility complex.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000200010

Recommendations for the treatment of osteomyelitis
Provedor de dados: 55
Autores: Lima,Ana Lucia L.; Oliveira,Priscila R.; Carvalho,Vladimir C.; Cimerman,Sergio; Savio,Eduardo.
With the advances in surgical treatment, antibiotic therapy and the current resources for accurate diagnosis and differentiated approaches to each type of osteomyelitis, better results are being obtained in the treatment of this disease. After a careful literature review carried out by a multiprofessional team, some conclusions were made in order to guide medical approach to different types of osteomyelitis, aiming to obtain better clinical outcomes and reducing the social costs of this disease. Acute and chronic osteomyelitis are discussed, with presentation of the general epidemiological concepts and the commonly used classification systems. The main guidelines for the clinical, laboratory and imaging diagnosis of infections are discussed, as well as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteomyelitis; Bone and joint infection; Soft tissue infection; Infectious diseases.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000500526

Admission of foreign citizens to the general teaching hospital of bologna, northeastern Italy: An epidemiological and clinical survey
Provedor de dados: 55
Autores: Sabbatani,Sergio; Baldi,Elena; Manfredi,Roberto; Chiodo,Francesco.
BACKGROUND: The emergency regarding recent immigration waves into Italy makes continued healthcare monitoring of these populations necessary. METHODS: Through a survey of hospital admissions carried out during the last five years at the S. Orsola-Malpighi General Hospital of Bologna (Italy), all causes of admission of these subjects were evaluated, together with their correlates. Subsequently, we focused on admissions due to infectious diseases. All available data regarding foreign citizens admitted as inpatients or in Day-Hospital settings of our teaching hospital from January 1, 1999, to March 31, 2004, were assessed. Diagnosis-related group (DRG) features, and single discharge diagnoses, were also evaluated, and a further assessment of infectious...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foreign citizens; Hospitalization; Immigration; Demographic and epidemiological features; Clinical diagnoses; Infectious diseases; Outcome.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000200001

Dried blood spot testing for the antenatal screening of HTLV, HIV, syphilis, toxoplasmosis and hepatitis B and C: prevalence, accuracy and operational aspects
Provedor de dados: 55
Autores: Boa-Sorte,Ney; Purificação,Antônio; Amorim,Tatiana; Assunção,Lorena; Reis,Alan; Galvão-Castro,Bernardo.
Introduction:Screening for vertically transmitted infection is mandatory and must be conducted at the first prenatal consultation. The most vulnerable women's groups are those at the lowest socio-economic level. Dried blood spot testing on filter paper could represent a secure way to screen pregnant women in the prenatal period.Methods:A cross-sectional study was conducted between November 2009 and March 2010, in the Metropolitan Region of Salvador, Bahia, Brazil, to compare the accuracy of the dried blood spot in filter paper and venipuncture serological as screening methods for HIV, HTLV, VHB, VHC, Treponema pallidum, and Toxoplasma gondii during prenatal period. Results of the venous blood sample collected in tubes were considered the gold...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prenatal care; Infectious diseases; Seroprevalence; Dried blood spot testinga.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000600618

Endothelial cells, tissue factor and infectious diseases
Provedor de dados: 56
Autores: Lopes-Bezerra,L.M.; Filler,S.G.
Tissue factor is a transmembrane procoagulant glycoprotein and a member of the cytokine receptor superfamily. It activates the extrinsic coagulation pathway, and induces the formation of a fibrin clot. Tissue factor is important for both normal homeostasis and the development of many thrombotic diseases. A wide variety of cells are able to synthesize and express tissue factor, including monocytes, granulocytes, platelets and endothelial cells. Tissue factor expression can be induced by cell surface components of pathogenic microorganisms, proinflammatory cytokines and membrane microparticles released from activated host cells. Tissue factor plays an important role in initiating thrombosis associated with inflammation during infection, sepsis, and organ...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tissue factor; Endothelial cell; Fungus; Infectious diseases; Procoagulant activity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000800004

Porcine circovirus 2 (PCV2) increases the expression of endothelial adhesion/junction molecules
Provedor de dados: 58
Autores: Marks,Fernanda S.; Almeida,Laura L.; Driemeier,David; Canal,Cláudio; Barcellos,David E.S.N.; Guimarães,Jorge A.; Reck,José.
Abstract Porcine circovirus type 2 (PCV2) is the primary causative agent of porcine circovirus disease, a complex multisystem syndrome in domestic pigs. Despite the significant economic losses caused by porcine circovirus disease, the mechanisms of pathogenesis underlying the clinical findings remain largely unclear. As various reports have highlighted the potential key role of vascular lesions in the pathogenesis of porcine circovirus disease, the aim of this work was to investigate effects of PCV2 infection on vascular endothelial cells, focusing on cell viability and expression of adhesion/junction molecules. PCV2 infection reduced endothelial cell viability, while viral infection did not affected the viability of several other classical cell lines....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swine; Infectious diseases; Pathogenesis; Viral infection; Cell adhesion.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400870

A STUDY OF ASSOCIATION BETWEEN ELISA RESPONSE TO INFECTIOUS DISEASE AGENTS AND CALVING INTERVAL IN CATTLE IN THE TROPICS OF MÉXICO
Provedor de dados: 65
Autores: Barajas-Rojas,José Alfonso; Riemann,Hans; Franti,Charles.
Forty eight cows of Holstein-Zebu crosses with at least one completed pregnancy were tested for antibodies to 20 disease agents. The testing was performed within one month (average two weeks) after calving when the IgG level constantly reaches its lowest value during the cows reproductive cycle. The results indicate that increasing levels of IgG against Leptospira interrogans serovar hardjo and Mycobacterium paratuberculosis may be associated with an increased calving interval. Increase in calving intervals could not be explained by age of cows or their genotypic characteristics.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious diseases; Antibodies; Calving intervals; México.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000300015

SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS
Provedor de dados: 65
Autores: Rojas,José Alfonso Barajas-; Riemann,Hans; Franti,Charles.
A herd of Cattle (Holstein-Zebu crosses) was screened bimonthly for two years by ELISA for IgG antibodies to infectious disease agents. The herd was composed of 3 age groups: Young animals ( &lt; 4 months of age), developing animals (4-36 months of age) and producing animals ( &amp;gt; 36 months of age). Ali young animals received colostrum within two hours after birth. The overall consistency of ELISA results, i. e agreement between two consecutive tests was about the same for the three age groups and was lowest for infections of intermediate prevalence (40-50%). The interpretation of changes in seroprevalence is most straight forward for young animals. Young animals positive at their first test reflect the immune status of their mothers while young...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ELISA; Seroconversion; Young; Sentinels; Infectious diseases.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000200015

Felis catus gammaherpesvirus 1 (FcaGHV1) and coinfections with feline viral pathogens in domestic cats in Brazil
Provedor de dados: 65
Autores: Kurissio,Jacqueline Kazue; Rodrigues,Marianna Vaz; Taniwaki,Sueli Akemi; Zanutto,Marcelo de Souza; Filoni,Claudia; Galdino,Maicon Vinícius; Araújo Júnior,João Pessoa.
ABSTRACT: Felis catus gammaherpesvirus 1 (FcaGHV1) may causes an asymptomatic infection that result in an efficient transmission and subsequently dissemination of the virus in feline population. This study used molecular detection by qPCR (quantitative PCR) based on DNA polymerase gene fragment amplification to evaluate the occurrence of FcaGHV1 and its correlation with other feline viral pathogens, such as Carnivore protoparvovirus 1 (CPPV-1), Felid alphaherpesvirus 1 (FeHV-1), and feline retroviruses such as feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV). Of the 182 blood samples evaluated 23.6% (43/182) were positives for FcaGHV1. Approximately 37.9% (33/87) of the samples that tested positive for retrovirus were also were positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gammaherpesvirus; Herpesvirus; Feline pathogen; Infectious diseases; Diagnosis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000300451

Seroprevalence for equine infectious anaemia in Equidae seized in the municipality of Petrópolis, State of Rio de Janeiro, Brazil, 2015/2018
Provedor de dados: 65
Autores: Cruz,Astrid Paola Mattheis; Aquino,Maria Helena Consedey de; Helayael,Michel José Sales Abdalla; Silva,Márcio Roberto; Ribeiro,João Batista; Hott,Marcos Cicarini; Magalhães Júnior,Walter Coelho Pereira de; Mendonça,Juliana França Monteiro de; Souza,Guilherme Nunes de.
ABSTRACT: Equine infectious anaemia (EIA) is a globally distributed disease caused by a lentivirus. EIA is a notifiable disease that should be reported to the Official Veterinary Service (SVO). Outbreaks are controlled by sacrificing the EIA-positive animals. The study analysed the prevalence of EIA in 165 Equidae seized on public roads in the municipality of Petrópolis, Rio de Janeiro, Brazil, from 2015 to 2018. After the seizure and identification of the Equidae, blood was collected to diagnose EIA. A prevalence of 11.8% was observed among the Equidae seized, and the main risk factor was the region of seizure. A kernel-smoothed map showed areas with the highest density of EIA-positive Equidae in the centre and to the east of the study area. In this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equine; Spatial distribution; Infectious diseases.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400452