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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 6, 2008, pp. 611-614
Bioline Code: oc08111
Full paper language: English
Document type: Short Communication
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 6, 2008, pp. 611-614

 en Genetic variability in the 5' UTR and NS5A regions of hepatitis C virus RNA isolated from non-responding and responding patients with chronic HCV genotype 1 infection
Araújo, Flávio MG; Sonoda, Ivan V; Rodrigues, Nilton B; Teixeira, Rosangela; Redondo, Rodrigo AF & Oliveira, Guilherme C


Sequence variation among different hepatitis C virus (HCV) isolates has adaptive significance and reflects the modes and intensities of selection mechanisms operating on the virus. In this work, we sought to investigate using classical population genetics parameters, the genetic variability of HCV genotype 1 using the 5' UTR and NS5A regions from treatment non-responding and responding groups of patients. Both regions showed low genetic varia-bility and the 5' UTR showed neutral deviation. No differences were observed in the nonsynonymous/synonymous nucleotide substitution ratio among groups for NS5A. The analysis of molecular variance test of the 5' UTR region showed an 11.94% variation among groups. Phylogenetic analysis showed no correlation between sequence variations and therapeutic responses.

hepatitis C virus - 5' UTR - NS5A - therapeutic

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