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lin chuang fen li jie he fen zhi gan jun nai yao xing zhi yu rpob rpsl ji yin bian yi de yan jiu
Author(s): 
Pages: 3131,3133
Year: Issue:  18
Journal: The Journal of Practical Medicine

Keyword:  结核分枝杆菌耐药性rpoB基因rpsL基因基因变异;
Abstract: 目的:对从疑似结核病患者痰液中分离的结核分枝杆菌的rpoB和rpsL基因突变情况进行研究,分别探讨其与耐利福平(RFP)和耐链霉素(SM)之间的关系.方法:采用PCR和DNA测序法对结核分枝杆菌临床分离株和1株卡介苗株(BCG)的rpoB和rpsL基因进行序列分析.结果:分离得到耐利福平27株,耐链霉素25株,经测序分析,所有利福平、链霉素敏感株rpoB、rpsL基因均未发生氨基酸突变;RFP和SM耐药株rpoB和rpsL基因的突变率各为81.5%(22/27)和76%(19/25);耐利福平以Ser531Leu突变最为常见,突变频率为55.6%(15/27),耐链霉素以Lys43Arg位突变最为常见,突变频率为72.0%(18/25).结论:rpoB和rpsL基因突变分别是结核分枝杆菌RFP和SM耐药性产生的主要分子机制,PCR-DNA测序法可快速检测结核分枝杆菌RFP和SM耐药性.
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