作者:姚光弼 王宝恩 崔振宇 姚集鲁 曾明德
【摘要】
目的
通过多中心、随机、双盲、安慰剂对照的临床试验,研究拉米夫定(lamivudine)对慢性乙型肝炎(乙肝)病人的疗效和安全性。
方法
随机选择322例慢性乙肝病人用拉米夫定治疗(100mg/d),107例病人服用安慰剂作对照, 共治疗12周。在12周治疗结束后,拉米夫定组和安慰剂组病人均继续服用拉米夫定100mg治疗至52周。疗效评估包括临床症状和体征、肝功能和HBV复制指标。
结果
治疗12周,拉米夫定组HBV DNA累计阴转率(低于1.6ng/L)和最终阴转率均显著高于安慰剂组(92.2%对14.1%, P<0.01;78.5%对11.1%, P<0.01)。第52周末,拉米夫定治疗组的HBV DNA最终阴转率与安慰剂/拉米夫定对照组差异无显著性(71.0%对77.7%, P>0.05)。治疗结束时,拉米夫定治疗组和安慰剂/拉米夫定对照组病人HBeAg并伴有抗-Hbe阳性的血清转换率差异无显著性(7.5%对5.2%, P>0.05)。无1例发生HBsAg阴转。第12周时拉米夫定组ALT的复常率高于安慰剂组(60.3%对27.5%, P<0.05)。治疗结束时,两组病人ALT的最终复常率差异无显著性(70.9%对74.5%, P>0.05)。拉米夫定组48周时HBV YMDD的变异率显著高于安慰剂/拉米夫定组(14.6%对5.0%, P<0.05)。在12周和52周的治疗过程中,总的不良事件和反应发生的频率和轻重程度在拉米夫定组和安慰剂/拉米夫定组之间无明显差别。未发生与研究药物相关的严重不良反应。结论 拉米夫定长期治疗,可继续抑制HBV的复制,伴有ALT的明显改善。长期服用拉米夫定可以很好耐受,安全性良好。
【关键词】 乙型肝炎 乙型肝炎病毒 拉米夫定
Long-term effect of lamivudine treatment in chronic hepatitis B virus infection
YAO Guangbi, WANG Bao'en, CUI Zhenyu, et al.
The Jing'an Qu Central Hospital, Shanghai 200040
【Abstract】 Objective To evaluate the long-term effect of lamivudine on the loss of serum HBV DNA, HBeAg/antiHBe seroconversion and ALT levels in chronic hepatitis B patients and its safety profile and tolerance with multi-center, randomized, double blind and placebo controlled trial. Method 429 patients with chronic HBV infection as defined by positive HBsAg, HBeAg and HBV DNA were enrolled and randomized into lamivudine and placebo groups. 322patients received lamivudine 100mg daily and 107 patients received placebo treatment for 12 weeks. Then, all patients were offered a further 40 weeks of open label lamivudine treatment. The efficacy and safety were evaluated with clinical, biochemical, hematological and virological parameters. Results After 12 weeks treatment, HBV DNA response (serum HBV DNA<1.6ng/L) rate in lamivudine group was higher than in placebo group (92.2% VS 14.1%, P<0.01); but at week 52, there was no difference between lamivudine and placebo/lamivudine groups (71.0% VS 77.7%, P>0.05). Rate of HBV DNA breakthrough in lamivudine group was higher than in placebo/lamivudine group (24.4% VS 8.5%, P<0.01). Proportion of HBeAg/anti-Hbe seroconversion had no difference in two groups (7.5% VS 5.2%, P>0.05). By week 12, ALT normalization rate in lamivudine group was higher than in placebo group (60.3% VS 27.5%, P<0.01); but after 52 weeks treatment, there was no difference between two groups (70.9% VS 74.5%, P>0.05). At week 48, HBV YMDD mutation rate in lamivudine group was higher than in placebo/lamivudine group (14.6% VS 5.0%, P<0.05). The incidence of adverse events was similar for both lamivudine and placebo/lamivudine group up to week 12 and 52. There was few severe drug-related adverse event. Conclusion Sustained HBV replication suppression could be obtained from long-term treatment with lamivudine 100mg daily accompanied with good tolerance and safety.
【Key words】 Hepatitis B Hepatitis B virus Lamivudine
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