Circulating immune complexes in chronic hepatitis C

✍ Scribed by Jung-Fa Tsai; Jen-Eing Jeng; Wen-Yu Chang; Mei-Shang Ho; Zu-Yau Lin; Juei-Hsiung Tsai

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 589 KB
• Volume: 46
• Category: Article
• ISSN: 0146-6615
• DOI: 10.1002/jmv.1890460104

✦ Synopsis

For assessing the role of circulating immune complexes (CIC) in chronic hepatitis C, the relative frequency of CIC was determined in 54 patients with chronic hepatitis C, 15 asymptomatic hepatitis C virus (HCV) carriers, and 54 healthy controls. IgM and IgG containing CIC were studied using both C l q and conglutinin (K) in an immunoglobulin-specific solid-phase enzyme immunoassay. CIC were a common feature of chronic hepatitis C with 96.3% of patients with at least one abnormal test result. The prevalence of elevated IgG-K, ISM-K, IgG-Clq, and ISM-C1 q CIC was 70.3'/0, 50.0%, 64.8%, and 35.1%, respectively. The prevalence of IgG class CIC was higher than IgM class CIC ( P = 0.038 for K-CIC and P = 0.01 for Clq-CIC, respectively). There is correlation between IgG-K CIC and IgG-Clq CIC (r = 0.445, P = 0.0021, IgG-K CIC and ISM-Clq CIC (r = 0.348, P = 0.020). ISM-K CIC and aspartic arninotransferase (r = 0.321, P = 0.015). ISM-K CIC and alanine aminotransferase (r =0.301, P = 0.027). Compared to patients with chronic persistent hepatitis and chronic lobular hepatitis, patients with chronic active hepatitis have a higher prevalence of elevated IgG-K CIC (77.2% vs. 40.0%, P = 0.029) and ISM-K CIC (56.8% vs. 20.0%, P = 0.038). The concentration of IgG-K, ISM-K, and ISM-Clq CIC i n the former was significantly higher than that in the latter, respectively. In conclusion, IgG class CIC is the major type of CIC in chronic hepatitis C. Conglutinin-binding CIC correlates with more severe tissue damage. CIC may play a role in the pathogenesis of chronic hepatitis C.