目的:探讨干扰素(IFN)-α/β受体启动子-408位点的单核苷酸多态性(SNP)与IFN疗效的关系。方法:应用聚合酶链反应(PCR)并基因测序法检测210例慢性乙型肝炎(CHB)患者(轻度38例、中度102例、重度70例)的IFN-α/β受体基因启动子-408位点的SNP。对210例中既往未用过IFN治疗的80例CHB患者给予聚乙二醇化干扰素α-2a or 2b(Peg-IFN-α-2a/2b)治疗48周。比较SNP与Peg-IFN疗效的关系。结果:80例患者中,IFN治疗持久应答(SR)33例(41.3%),非持久应答(NSR)47例(58.7%)。IFN-α/β受体启动子-408位点CT基因型患者干扰素治疗SR为65%(13/20),显著高于CC基因型患者干扰素治疗SR 29.5%(13/44),两者比较差异有显著性意义(χ2=7.166,P=0.007)。干扰素治疗SR组IFN-α/β-408位点等位基因C、T的频率与NSR组的频率比较差异无显著性意义(P>0.05)。结论:IFN-α/β受体启动子-408为CT杂合基因型的CHB患者可能对Pec-IFN治疗效果较好。
Objective To evaluate the clinical efficacy of dihydroartemisinin-mefloquine on acute uncomplicated falciparum malaria. Methods Fifty-four patients with symptomatic falciparum malaria were allocated to receive oral dihydroartemisinin at a single dose of 120?mg on day 1, followed by mefloquine, 750?mg and 500?mg on days 2 and 3, respectively. Follow-up was performed on days 1,2,3,4,7,14,21, and 28. Results All patients had a rapid initial response to treatment. The parasite clearance time (PCT) after treatment was 30.7±3.6 hours. The fever subsidence time (FST) after treatment was 21.2±2.8 hours. Two patients had a recrudescence 21 and 25 days respectively after the disappearance of parasitemia, hence the recrudescence rate was 3.7% and the cure rate was 96.3%. No serious adverse effects were observed, only mild and transient nausea, vomiting and loss of appetite. Conclusion A combination of dihydroartemisinin and mefloquine is effective in the treatment of acute uncomplicated falciparum malaria.
