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MecI基因缺失在耐甲氧西林金黄色葡萄球菌中的检测情况

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摘要 金黄色葡萄球菌(staphylococcus aureus)是人类一种重要的病原菌,可引起局部化脓感染,也可引起肺炎、伪膜性肠炎、心包炎,甚至败血症、脓毒症等全身感染. 但随着耐甲氧西林金黄色葡萄球菌(MRSA)的不断出现,金黄色葡萄球菌引起感染的治疗成为临床一个重大的难题. MRSA主要的耐药机制是因为获得了外源性的耐药基因MecA.MecA基因的表达受多种因素的影响,其中MecI基因为负性调节因子,其产物可以抑制MecA基因的表达. 在临床分离的MRSA中往往会出现MecI基因的缺失、碱基的置换、插入、丢失等突变,使MecI基因不能正常表达,从而解除了对MecA基因表达的抑制作用[1],表现为对甲氧西林的耐药.本文通过分析MRSA中MecI基因检测情况, 初步探讨山西地区MRSA主要流行的耐药分子机制.
出处 《中国药物与临床》 CAS 2017年第10期1526-1528,共3页 Chinese Remedies & Clinics
基金 山西省基础研究自然科学基金(2013011060-1)
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