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本帖最后由 StephenW 于 2011-12-22 21:20 编辑
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http://www.medscape.com/viewarticle/554484_4
Favourable Outcome After Hepatitis B e Antigen Seroconversion Because most patients with cirrhosis or HCC were HBeAg negative and anti-HBe positive, it was argued that HBeAg seroconversion might implicate unfavourable outcome in chronic HBV infection.[39,40] This suggestion is not compatible with the results of a matched case control study showing that HBeAg-positive status increased the risk of HCC 3.6-fold when compared with HBeAg-negative HBsAg carriers.[41] This association has been confirmed by a recent prospective 8.5-year follow-up study involving 11 893 Taiwanese men, 30-65 years of age. In that study, the annual incidence of HCC was 1.2% for those who were HBsAg and HBeAg positive at enrolment, 0.3% for those who were HBsAg positive only, and 0.04% for those who were HBsAg negative. After adjusting for age, hepatitis C virus status, and use of cigarettes and alcohol, the relative risk for HCC was 9.6 (95% confidence interval, 6.0-15.2) among men who were positive for HBsAg alone and 60.2 (95% confidence interval, 35.5-102.1) for those who were positive for both HBsAg and HBeAg.[42] However, this study did not provide data comparing the incidence of HCC among carriers who underwent HBeAg seroconversion during follow-up vs those who remained HBeAg positive. In one cohort of 233 patients with HBeAg-positive chronic hepatitis B followed for a mean of 6.1 years without treatment, the annual incidence of cirrhosis and HCC was 1.8% and 0.4%, respectively, for 86 patients who had spontaneous HBeAg seroconversion and 3.7% and 1.6%, respectively (both P < 0.05), for those who remained HBeAg positive during follow-up.[43] Moreover, in one study on the natural course of chronic HBV infection after spontaneous HBeAg seroconversion in 283 patients reported from Taiwan, the overall annual incidence of cirrhosis and HCC development was estimated to be only 0.9% and 0.2%, respectively, during a mean follow-up of 9 years.[4] All these data implicate a favourable outcome of spontaneous HBeAg seroconversion in chronic HBV infection.
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