Persistently Infected Animals
Mostrando 1-12 de 91 artigos, teses e dissertações.
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1. Estudo molecular de pestivirus em amostras de cultura celular e soro de pequenos ruminantes. / Estudo molecular de pestivirus em amostras de cultura celular e soro de pequenos ruminantes.
The Ruminants Pestiviruses are often associated with temporary and subclinical or mild clinical signs, with the largest losses related to the infection of pregnant females that can cause fetal loss and birth of persistently infected (PI) animals. The Pestivirus are distributed in many countries, including Brazil, where studies in goats and sheep are scarce.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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2. TESTES DE ELISA E VÍRUS-NEUTRALIZAÇÃO NA DETECÇÃO DE ANTICORPOS CONTRA O VÍRUS DA DIARRÉIA VIRAL BOVINA NO SORO E LEITE / PERFORMANCE OF VIRUS NEUTRALIZING TEST AND ELISA FOR DETECTION OF ANTIBODIES AND IDENTIFICATION OF HERDS WITH BOVINE VIRAL DIARRHEA VIRUS INFECTION
O sucesso nas estratégias de controle e erradicação do vírus da diarréia viral bovina (BVDV), passa pela identificação e eliminação dos animais persistentemente infectados (PI). Como esses animais excretam continuamente o vírus, a prevalência e os títulos de anticorpos nos rebanhos que os possuem são geralmente altos. Por isso, amostras de tanqu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/06/2011
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3. Detecção do vírus da diarreia viral bovina em carrapatos Rhipicephalus (Boophilus) microplus alimentados em bovino persistentemente infectado= Detection of bovine viral diarrhea virus in Rhipicephalus (Boophilus) microplus ticks fed on persistently infected cattle / Detection of bovine viral diarrhea virus in Rhipicephalus (Boophilus) microplus ticks fed on persistently infected cattle
Background: Bovine viral diarrhea virus (BVDV) is one of the main agents that cause economical losses in cattle worldwide. Congenitally infected calves that are born persistently infected (PI) to BVDV are the main sources of infection to susceptible cattle. Direct contact is the most important form of transmission, but indirect contact can also spread BVDV,
Publicado em: 2011
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4. Detecção do virus da diarréia bovina em carrapatos Rhipicephalus (boophilus) microplus alimentados em bovino persistentemente infectado
Background: Bovine viral diarrhea virus (BVDV) is one of the main agents that cause economical losses in cattle worldwide. Congenitally infected calves that are born persistently infected (PI) to BVDV are the main sources of infection to susceptible cattle. Direct contact is the most important form of transmission, but indirect contact can also spread BVDV,
Publicado em: 2011
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5. Caracterização clínica, patológica e molecular da infecção pelo vírus da diarréia viral bovina tipo 2 não citopático em propriedade do Rio Grande do Sul
O vírus da diarreia viral bovina (BVDV) é responsável por diferentes síndromes que afetam principalmente bovinos em todo o mundo, causando grandes perdas econômicas. A principal medida de controle desta infecção é a detecção e retirada dos animais persistentemente infectados (PI) do rebanho. O presente trabalho analisou a infecção persistente por
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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6. RESPOSTA SOROLÓGICA E PROTEÇÃO FETAL CONTRA O VÍRUS DA DIARRÉIA VIRAL BOVINA (BVDV) EM VACAS PRENHES IMUNIZADAS COM UMA VACINA EXPERIMENTAL ATENUADA / SEROLOGICAL RESPONSE AND FETAL PROTECTION AGAINST BOVINE VIRAL DIARRHEA VIRUS (BVDV) IN PREGNANT COWS IMMUNIZED WITH AN EXPERIMENTAL ATTENUATED VACCINE
The major goal of bovine viral diarrhea virus (BVDV) vaccines is to confer fetal protection and thus prevent reproductive losses and the production of persistently infected (PI) calves. This dissertation reports the antibody response and fetal protection in pregnant cows conferred by an experimental vaccine containing two attenuated strains of BVDV (BVDV-1 a
Publicado em: 2008
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7. Associação entre sorologia para Neospora caninum e taxa de prenhez em vacas receptoras de embriões
The association between seropositivity for Neospora caninum and pregnancy rate in cows belonging to a surrogate herd submitted to embryo transfer technology was determined. The serological status was evaluated in 275 heifers, aging from 14 to 20-month-old. For N. caninum serology analysis of a monoclonal competitive ELISA test Kit was used, and 81 animals (2
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2007-10
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8. A search for RNA insertions and NS3 gene duplication in the genome of cytopathic isolates of bovine viral diarrhea virus
Calves born persistently infected with non-cytopathic bovine viral diarrhea virus (ncpBVDV) frequently develop a fatal gastroenteric illness called mucosal disease. Both the original virus (ncpBVDV) and an antigenically identical but cytopathic virus (cpBVDV) can be isolated from animals affected by mucosal disease. Cytopathic BVDVs originate from their ncp
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-07
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9. Alterações hematológicas e humorais de eqüinos expostos à infecção por Babesia equi, na região sul do Rio Grande do Sul / Humoral and hematological changes in equines exposed to infection by Babesia equi, in the southern regions of Rio Grande do Sul state, Brazil
The equine babesiosis is one of the most important parasitic disease of the equines, it causes great damage to animal health. The disease is a haemoparasitosis caused by Babesia equi. Through infecting and destroying red blood cells, it can compromise the equine function, leading to loss of vitality and decrease in the performance of infected animals. The pu
Publicado em: 2005
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10. ANÁLISE DO GENOMA DE ISOLADOS CITOPÁTICOS DO VÍRUS DA DIARRÉIA VIRAL BOVINA (BVDV) PARA REARRANJOS GENÔMICOS ASSOCIADOS COM A EXPRESSÃO DA PROTEÍNA NS3. / ANALYSIS OF CYTOPATHIC ISOLATES OF BOVINE VIRAL DIARRHEA VIRUS (BVDV) FOR GENOMIC REARRANGEMENTS ASSOCIATED WITH EXPRESSION OF THE PROTEIN NS3.
Calves born persistently infected (PI) with non-cytopathic bovine viral diarrhea virus (ncpBVDV) frequently develop a fatal gastroenteric illness called mucosal disease (MD). From animals affected by MD, both the original virus (ncpBVDV) and an antigenically identical, yet cytopathic virus (cpBVDV) can be isolated. Cytopathic BVDVs are originated from the nc
Publicado em: 2005
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11. Variation in susceptibility to benznidazole in isolates derived from Trypanosoma cruzi parental strains
In this work, the susceptibility to benznidazole of two parental Trypanosoma cruzi strains, Colombian and Berenice-78, was compared to isolates obtained from dogs infected with these strains for several years. In order to evaluate the susceptibility to benznidazole two groups of mice were infected with one of five distinct populations isolated from dogs as w
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-10
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12. Rat Model of Borna Disease Virus Transmission: Epidemiological Implications
Rapid transmission of Borna disease virus occurred upon cohabitation of persistently infected and naive rats. Infectious virus, which was abundantly present in fresh urine samples of carrier rats, entered the brains of recipient rats via the olfactory route. Thus, susceptible farm animals possibly acquire the virus from persistently infected rats.
American Society for Microbiology.