title: Serum alanine aminotransferase level in relation to hepatitis B and C virus infections among blood donors.
abstract: To assess the serum alanine aminotransferase (ALT) activity in relation to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections among blood donors, antibodies to HCV (anti-HCV) and hepatitis B surface antigen (HBsAg) were detected in 400 blood donors with normal ALT level (< or = 750 mumol/s per liter), and 76 blood donors with raised ALT level. The prevalence of anti-HCV (10.5%) and HBsAg (28.9%) in the latter was higher than that (2.0% and 17.5%, respectively) in the former (p < 0.001 and p < 0.03, respectively). There was a trend that indicated that the risk of anti-HCV positivity increased with increasing age (p < 0.001). Thirty of 76 (39.5%) donors with raised ALT level were positive for anti-HCV or HBsAg. Compared with HBsAg-positive donors, donors with anti-HCV had higher serum ALT levels (p < 0.01) and greater mean age (p < 0.01). Multivariate analysis indicated that both anti-HCV (odds ratio: 6.2; 95% confidence interval: 2.2-17.8) and HBsAg (odds ratio: 2.2; 95% confidence interval: 1.3-3.9) were significantly associated with raised serum ALT activity. The estimated population-attributable risk was 8.6% for anti-HCV, and 13.8% for HBsAg. In conclusion, although HBV and HCV infections are independent risk factors of raised ALT activity among blood donors, they play a minor role in the etiology of raised ALT activity.
authors.affiliation: Department of Internal Medicine, Kaohsiung Medical College, Taiwan, Republic of China.
authors.forename: J F
authors.initials: JF
authors.lastname: Tsai
authors.forename: J E
authors.initials: JE
authors.lastname: Jeng
authors.forename: M S
authors.initials: MS
authors.lastname: Ho
authors.forename: C S
authors.initials: CS
authors.lastname: Wang
authors.forename: W Y
authors.initials: WY
authors.lastname: Chang
authors.forename: M Y
authors.initials: MY
authors.lastname: Hsieh
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Lin
authors.forename: J H
authors.initials: JH
authors.lastname: Tsai
mesh_terms: D000328:Adult; D000367:Age Factors; D000410:Alanine Transaminase / Q000097:blood*; D001782:Blood Donors; D005260:Female; D006509:Hepatitis B / Q000097:blood*; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006526:Hepatitis C / Q000097:blood*; D018937:Hepatitis C Antibodies / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012737:Sex Factors
chemical_list: D006514:Hepatitis B Surface Antigens; D018937:Hepatitis C Antibodies; D000410:Alanine Transaminase