Data/hora: 09/06/2024 16:32:37

Provedor de dados: | Brazilian Journal of Infectious Diseases
País: | Brazil
Título: | Fluorescent antibody test, quantitative polymerase chain reaction pattern and clinical aspects of rabies virus strains isolated from main reservoirs in Brazil
Autores: | Appolinário,Camila; Allendorf,Susan Dora; Vicente,Acácia Ferreira; Ribeiro,Bruna Devidé; Fonseca,Clóvis Reinaldo da; Antunes,João Marcelo; Peres,Marina Gea; Kotait,Ivanete; Carrieri,Maria Luiza; Megid,Jane.
Data: | 2015-10-01
Ano: | 2015
Palavras-chave: | Pathogenesis; QRT-PCR; FAT; Rabies; Variants.
Resumo: | ABSTRACTRabies virus (RABV) isolated from different mammals seems to have unique characteristics that influence the outcome of infection. RABV circulates in nature and is maintained by reservoirs that are responsible for the persistence of the disease for almost 4000 years. Considering the different pattern of pathogenicity of RABV strains in naturally and experimentally infected animals, the aim of this study was to analyze the characteristics of RABV variants isolated from the main Brazilian reservoirs, being related to a dog (variant 2),Desmodus rotundus (variant 3), crab eating fox, marmoset, and Myotis spp. Viral replication in brain tissue of experimentally infected mouse was evaluated by two laboratory techniques and the results were compared to clinical evolution from five RABV variants. The presence of the RABV was investigated in brain samples by fluorescent antibody test (FAT) and real time polymerase chain reaction (qRT-PCR) for quantification of rabies virus nucleoprotein gene (N gene). Virus replication is not correlated with clinical signs and evolution. The pattern of FAT is associated with RABV replication levels. Virus isolates from crab eating fox and marmoset had a longer evolution period and higher survival rate suggesting that the evolution period may contribute to the outcome. RABV virus variants had independent characteristics that determine the clinical evolution and survival of the infected mice.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000500479
Editor: | Brazilian Society of Infectious Diseases
Relação: | 10.1016/j.bjid.2015.06.012
Formato: | text/html
Fonte: | Brazilian Journal of Infectious Diseases  v.19 n.5 2015
Fonte: | info:eu-repo/semantics/openAccess