摘要
AIMS To probe the effect of interferon in combination with rib- avirin on the plus and minus strands of hepatitis C virus RNA (HCV RNA). METHODS Twenty-three cases diagnosed as chronic hepatitis C (CHC) according to positive HCV RNA/anti-HCV,fluctuating levels of aminotransferase activities (>1 year) and absence of other hepatitis virus marker,were studied. Among them,13 pa- tients received combined antiviral therapy (subcutaneous injection of 3MU of interferon-α three times per week for 3 months and intra- venous drip of 1 g of ribavirin per day during the first month of treatment with interferon) and 10 patients received single interfer- on therapy (the same as above-mentioned) as control. The plus and minus strands of HCV RNA in sera and peripheral blood mononuclear cells (PBMCs) of these patients were tested by means of nested reverse transcription-polymerase chain reaction (nested RT-PCR). RESULTS At the end of therapy,the abnormal ALT levels de- creased to normal range in 9 (69.23%) cases in the combined antiviral group. Of them,5 (55.56%)experienced post-therapy relapse and 4 (44.44%) were complete responders. In the inter- feron group,the ALT decreased to normal in 6 (60%) cases,of which,4 (66.67%) had post-therapy relapse and 2 (33.33%) were complete responders. The differences between the two groups were nonsignificant (P>0.05). At the end of therapy,the positive rate of the plus strand in sera decreased from 92.3% to 38.46% (P<0.05) and that of the minus strand in PBMCs,from 76.92% to 38.46% (P<0.05) in the combined antiviral group; and in the interferon group,the former decreased from 100% to 50% (P<0.05) and the latter,from 90% to 40% (P<0.05). Again,no significant differences were found between groups (P >0.05). The relapse occurred in patients whose plus strand HCV RNA in PBMCs remained positive before and after treatment. CONCLUSIONS Ribavirin could not enhance the antiviral effect of interferon. The absence of HCV RNA in serum does not mean complete clearance of HCV,and its value for evaluating the an- tiviral effect and prognosis is limited. Therefore,it is essential to measure the plus and minus strands of HCV RNA in sera and PBM- Cs simultaneously.
目的探讨干扰素联合病毒唑对正、负链丙型肝炎病毒 RNA(HCV RNA)的影响.方法 23例患者,依据 HCV RNA 及抗-HCV 阳性,肝功能反复不正常,病程持续1年以上,其他肝炎病毒标志阴性,被诊断为慢性丙型肝炎(CHC).其中,13例接受联合抗病毒治疗,即α-干扰素300万 U,皮下注射,每周3次,治疗3个月;和病毒唑1g,于干扰素治疗的第1个月,同时静脉滴注,1次/d,治疗1个月.10例单用干扰素治疗3个月(用法同上).作为对照.其血清及周围血单核细胞(PBMCs)中正、负链 HCV RNA 用套式反转录—聚合酶链反应技术检测.结果联合抗病毒组中,9例(69.23%)异常的 ALT 降至正常,5例于治疗停止后第24周复发,4例为完全应答者;而单用干扰素组,分别为6例(60%)、4例(66.67%)和2例(33.335).两组间无明显差异(P>0.05).治疗结束时,联合抗病毒组的血清正链阳性率由92.31%降至38.46%(P<0.05),PBMCs 的负链阳性率由76.92%降至38.46%(P<0.05);而单用干扰素组,分别为100%降至50%(P<0.05)和90%降至40%(P<0.05).但组间无差异(P>0.05).复发见于治疗前后 PBMCs 中正链 HCVRNA 持续阳性的患者.结论病毒唑似不能增加干扰素的疗效.血清 HCV RNA 的阴转并不意味着 HCV 的完全清除,因而用它判断疗效及病情转归有一定的局限性.因此,同时检测血清及 PBMCs 中正、负链 HCV RNA,具有重要的临床意义.
基金
Supported by the Science Foundation of the Education Committee of China (1990) 360.
