RESUMO
A group of 31 rabies viruses (RABVs), recovered primarily from dogs, one deer and one human case, were collected from various areas in China between 1989 and 2006. Complete G gene sequences determined for these isolates indicated identities of nucleotide and amino acid sequences of >or=87% and 93.8%, respectively. Phylogenetic analysis of these and some additional Chinese isolates clearly supported the placement of all Chinese viruses in Lyssavirus genotype 1 and divided all Chinese isolates between four distinct groups (I-IV). Several variants identified within the most commonly encountered group I were distributed according to their geographical origins. A comparison of representative Chinese viruses with other isolates retrieved world-wide indicated a close evolutionary relationship between China group I and II viruses and those of Indonesia while China group III viruses formed an outlying branch to variants from Malaysia and Thailand. China group IV viruses were closely related to several vaccine strains. The predicted glycoprotein sequences of these RABVs variants are presented and discussed with respect to the utility of the anti-rabies biologicals currently employed in China.
Assuntos
Antígenos Virais/genética , Glicoproteínas/genética , Vírus da Raiva/classificação , Vírus da Raiva/genética , Raiva/virologia , Proteínas do Envelope Viral/genética , Sequência de Aminoácidos , Animais , Antígenos Virais/química , Sequência de Bases , China , Cervos , Cães , Evolução Molecular , Feminino , Genótipo , Glicoproteínas/química , Glicosilação , Humanos , Dados de Sequência Molecular , Filogenia , Raiva/veterinária , Vírus da Raiva/isolamento & purificação , Alinhamento de Sequência , Análise de Sequência de DNA , Homologia de Sequência de Aminoácidos , Homologia de Sequência do Ácido Nucleico , Proteínas do Envelope Viral/químicaRESUMO
OBJECTIVE: Feasibility of using MNA cell-culture inoculation test to detect and isolate the street rabies virus. METHODS: Using MNA cell-culture inoculation test, fluorescent antibody test (FAT) and sandwich ELISA with double-antibodies to detect 33 specimens of street rabies virus, 20 specimens of negative canine brains and 4 specimens of healthy mice brains. RESULTS: 33 specimens of street rabies virus were positive to the cell-culture inoculation test but the others were negative. The concordances of MNA cell-cultured inoculation test with FAT and sandwich ELISA with double-antibodies were both 100%. CONCLUSION: MNA cell-culture inoculation test appeared to be both highly sensitive and specific in detecting the street rabies virus, and could be used in detection and isolation of the virus.