The aim of the present study was to characterize hepatitis C virus (HCV) genotypes using the INNO-LiPA HCV line probe assay and direct sequencing from three different HCV-RNA-positive (serum) groups :
(i) blood donors (n=59) ;
(ii) haemophiliacs (n=43) ;
and (iii) patients undergoing liver transplantation (n=26).
Of 128 HCV-RNA-positive samples, 74 (58%) were genotype 1. Of these, 41 were genotype la, 32 were genotype lb and one was genotype 1 indeterminate.
Of the remaining 54 samples, seven (5%) were genotype 2a, two (2%) were genotype 2b, 26 (20%) were genotype 3a, three (2%) were genotype 4a, while 16 (12.5%) were of a mixed genotype.
There was no significant difference between the three groups with regard to the prevalence of any specific genotype.
However, in blood donors and haemophiliac patients there was a statistically significant difference in the occurrence of genotype 3a in patients with elevated alanine aminotransferase (ALT) levels (30.3%) compared with those patients with persistently normal ALT levels (5.6% ; P=0.004 ; x2).
Genotype 3a was also uncommon in liver transplant patients (one of 14) with'sporadic'HCV infection.
Genotype 4a was detected only in liver transplant patients.
These patients had originated from Egypt (n=1), Italy (n=1) and Romania (n=1).
Mots-clés Pascal : Hépatite virale C, Virose, Infection, Exploration virologique, Variation phénotypique, Virus hépatite C, Flaviviridae, Virus, RNA, Donneur sang, Hémophilie, Incidence, Epidémiologie, Homme, Appareil digestif pathologie, Foie pathologie, Hémopathie, Coagulopathie, Maladie héréditaire
Mots-clés Pascal anglais : Viral hepatitis C, Viral disease, Infection, Virological exploration, Phenotype variation, Hepatitis C virus, Flaviviridae, Virus, RNA, Blood donor, Hemophilia, Incidence, Epidemiology, Human, Digestive diseases, Hepatic disease, Hemopathy, Coagulopathy, Genetic disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0187317
Code Inist : 002B30A01C. Création : 21/05/1997.