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- W2339869596 abstract "Objectives: Hepatitis C virus (HCV) is not directly cytopathic to the hepatocytes; however, host immune response against the virus does cause hepatic injury. Production of the HCV antibody is a host immune response to a viral antigen. The currently used HCV antibody assay is a qualitative, not quantitative, assessment. In this study, we sought to quantitatively estimate HCV antibody levels in patients who had undergone liver transplantations at the University of Rochester Medical Center, Rochester, New York, and correlate these levels with HCV RNA viral load, genotype, severity of recurrence, and anti-HCV treatment. Materials and Methods: From 39 liver transplantation patients, we obtained 141 blood samples for quantitative HCV RNA to measure HCV antibody levels quantitatively. Results: Most antibody levels were within a narrow range with a mean of 32.9 ± 5.1. Samples with undetectable RNA had a mean antibody level of 31.4 ± 8.0, and samples with a positive RNA had mean level of 33.0 ± 4.6. The mean antibody levels were significantly higher for patients with genotype 1 (n = 33) compared with those with genotype 2 (n = 5) (33.2 vs 29.1; P = .007). No correlation was found between antibody levels and severity of hepatic injury with regard to hepatitis activity index or fibrosis score. Six patients with no response to anti-HCV treatment had no change in their mean antibody levels (33.7 vs 34.5). Ten patients who responded to anti-HCV therapy had lower mean levels after therapy, but the changes were not significant (34.2 vs 30.4). Conclusions: Antibody levels in this study did not correlate with viral load or hepatic injury. However, genotype-2 patients had significantly lower levels compared with genotype-1 patients, and patients who responded to anti-HCV therapy demonstrated decreased antibody levels. Hepatitis C virus (HCV) infection is the most common indication for liver transplantation (LTx) in the United States. Recurrence of HCV infection is almost universal after LTx. With currently available anti-HCV therapy, less than 35% of patients achieve a" @default.
- W2339869596 created "2016-06-24" @default.
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- W2339869596 date "2006-06-01" @default.
- W2339869596 modified "2023-09-26" @default.
- W2339869596 title "HCV antibody quantitative levels in liver transplant patients: do they have any relevance in clinical practice?" @default.
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