The extent of hepatitis C virus (HCV) infection among kidney recipient
s was investigated in 67 patients by testing for anti-HCV paired serum
samples, collected at time of transplantation and during follow-up (3
2 +/- 20 months). Prevalence of anti-HCV at transplant time was 48%, a
nd was related to the time on dialysis and to the amount of blood tran
sfusions. Following transplantation, nine (28%) seropositive patients
lost anti-HCV and five (14%), previously seronegative, seroconverted.
Anti-HCV was found to be positive in 92% of the patients with chronic
liver disease who were on hemodialysis, but in 56% in kidney recipient
s with chronic hepatitis. Anti-HCV was positive in 50% of patients wit
h resolving hepatitis before transplantation, but only in 21% of those
with acute hepatitis following transplantation. This study confirms t
he high risk of HCV infection among hemodialysis and kidney recipients
populations, and also that HCV is closely related with the length of
time on dialysis as well as the number of blood units transfused. HCV
is the main cause of acute and chronic liver disease in kidney recipie
nts, but does not clearly influence the survival of the allograft nor
that of patients.