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卢旺达复发结核病的分子学研究

Molecular investigation of recurrent tuberculosis in patients from Rwands
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摘要 背景:入选病例为来自卢旺达4个省市的肺结核(TB)病人。目的:确定复发TB的原因。方法:分离2002年1月—2005年9月复发TB的一系列结核分枝杆菌菌株,进行spoligotyping(间隔区寡核苷酸分型法)和MIRU-VNTR(数目可变的串联重复序列和结核分枝杆菌散在分布重复单位)基因型分析。通过表型药敏检测和rpoB、katG、inhA、embB基因的测序来确定耐药状态。结果:纳入研究的710例痰培养阳性的TB病人中,638例获得初次发病的药敏结果,其中69例为耐多药结核(MDR-TB),569例为非MDR- TB。在MDR-TB病人中,22例得到多株分离株,其中12例为治愈后复发,10例为迁延不愈。12例治愈后复发的病人中,4例病人前后分离株的DNA指纹型不同,说明为再感染,其余8例及10例慢性病人的前后分离株DNA指纹型相同,复发原因分别为复燃和治疗失败导致。非MDR-TB病人中,1例复发,复发原因为初发时混合克隆感染的单克隆复燃。结论:上述结果说明MDR-TB的治疗失败率/复燃率均很高,依此推测2年以内的再感染并不是本地区复发TB的普遍原因。
出处 《国际结核病与肺部疾病杂志》 2007年第4期137-143,共7页 The International Journal of Tuberculosis and Lung Disease
基金 supported by the Damien Foundation(Brussels Belgium) the Fund for Scientific Research of Flanders(Brussels Belgium FWO grant No. G. 0471.03N)
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