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阴沟肠杆菌产AmpC β-内酰胺酶的流行情况调查 被引量:3

Prevalence of AmpC β- lactamases Producing Strains in Clinical Isolagtes of Enterobacter cloacae
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摘要 目的:了解我国临床分离的阴沟肠杆菌中,诱导性产AmpC酶菌株和组成性高产AmpC酶菌株的发生率.方法:用标准纸片扩散法药敏试验对106株临床分离的阴沟肠杆菌进行筛选,对头孢他啶、头孢噻肟、头孢曲松或氨曲南耐药或中介则为初筛阳性,阳性菌株全部进行酶粗提物三维试验和等电聚焦电泳,以进一步对产酶情况进行分析.全部初筛阴性菌株和初筛阳性而三维试验阴性菌株均进行AmpC酶诱导定性试验,以检出其中的诱导性产AmpC霉酶菌株.结果:106株阴沟肠杆菌中,42株(39.6%)对头孢他啶、头孢噻肟、头孢曲松或氨曲南耐药或中介,31株(29.2%)组成性高产AmpC酶,68株(64.2%)诱导性产AmpC酶.高产AmpC酶菌株主要分离自痰标本(64.5%)、各种外科感染标本(19.4%)和尿标本(9.7%),其中,痰标本中高产AmpC酶菌株所占比例最高(37.0%).结论:在我国临床分离的阴沟肠杆菌中,由AmpC酶介导的第三代头孢菌素耐药问题已经较为严重,必须尽快采取有效措施遏制高产AmpC酶菌株的蔓延.
出处 《中国药物应用与监测》 CAS 2001年第6期19-23,共5页 Chinese Journal of Drug Application and Monitoring
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