title: Host dependent variation of hepatitis C virus: phylogenetic analyses.
abstract: Hepatitis C virus quasispecies in six patients from three families were separated by single strand conformation polymorphism analysis and by determination of nucleotide sequences of envelope regions containing the E1 gene segment and hypervariable region-1 of each quasispecies. Four of the six patients had multiple quasispecies. Phylogenetic analyses indicated that all quasispecies from one individual were highly homologous to each other. The homology was higher in the E1 gene segment than in hypervariable region-1. Furthermore, all quasispecies found in members of one family (husband and wife) were also highly homologous, suggesting direct intrafamilial transmission. The direction of hepatitis C virus variation in hypervariable region-1, however, seems to differ depending on the host in intrafamilial transmission.
authors.affiliation: Second Department of Internal Medicine, Tokyo Medical and Dental University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Maekawa
authors.forename: N
authors.initials: N
authors.lastname: Enomoto
authors.forename: M
authors.initials: M
authors.lastname: Kurosaki
authors.forename: F
authors.initials: F
authors.lastname: Marumo
authors.forename: C
authors.initials: C
authors.lastname: Sato
mesh_terms: D000293:Adolescent; D000368:Aged; D001483:Base Sequence; D017931:DNA Primers; D005260:Female; D015752:Genes, env; D014644:Genetic Variation; D016174:Hepacivirus / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D006526:Hepatitis C / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D012367:RNA, Viral / Q000032:analysis / Q000235:genetics
chemical_list: D017931:DNA Primers; D012367:RNA, Viral