Molecular Characterization of Carbapenem Resistant Klebsiella pneumoniae in Malaysia Hospital.

Molecular Characterization of Carbapenem Resistant Klebsiella pneumoniae in Malaysia Hospital.
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马来西亚医院的碳青霉烯甲虫肺炎的分子表征。

DOI:
10.3390/pathogens10030279
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发表时间:
2021-03-02
期刊:
Pathogens (Basel, Switzerland)
影响因子:
--
通讯作者:
Teh CSJ
Teh CSJ
中科院分区:
其他
文献类型:
--
作者:
Lau MY;Teng FE;Chua KH;Ponnampalavanar S;Chong CW;Abdul Jabar K;Teh CSJ

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碳青霉烯类耐药肺炎克雷伯菌(CRKP)的出现引起了人们的极大关注,因为碳青霉烯类是多重耐药革兰氏阴性菌感染的最后一线疗法。本研究旨在根据分离株的分子基因型和临床特征,报告马来西亚一家教学医院 CRKP 的流行病学。 2016年1月至2017年8月,从某三级教学医院分离出63株CRKP菌株。在55株分离株中检测到碳青霉烯酶基因,其中以blaOXA-48(63.5%)为主要碳青霉烯酶基因,其次为blaNDM(36.5%)。在九个分离株中检测到至少一种孔蛋白丢失。总体而言,通过 PFGE 分析,63 个分离株被分为 30 个簇,相似度为 80%。统计分析表明,院内死亡率与中心静脉导管的使用、CRKP(尤其是 NDM 生产者)感染或定植显着相关。相比之下,使用 Cox 比例风险回归进行的生存分析发现,有造口的患者和接受亚胺培南治疗的患者的风险比较高,但产生 NDM 的 CRKP 患者的风险比较低。 OXA-48碳青霉烯酶基因是本研究中的主要碳青霉烯酶基因。由于 CRKP 感染可能导致院内死亡率较高,因此早期检测分离株对于减少其传播非常重要。
The emergence of carbapenem-resistant Klebsiella pneumoniae (CRKP) is a great concern, as carbapenems are the last-line therapy for multidrug-resistant Gram-negative bacteria infections. This study aims to report the epidemiology of CRKP in a teaching hospital in Malaysia based on the molecular genotypic and clinical characteristics of the isolates. Sixty-three CRKP strains were isolated from a tertiary teaching hospital from January 2016 until August 2017. Carbapenemase genes were detected in 55 isolates, with blaOXA-48 (63.5%) as the predominant carbapenemase gene, followed by blaNDM (36.5%). At least one porin loss was detected in nine isolates. Overall, 63 isolates were divided into 30 clusters at similarity of 80% with PFGE analysis. Statistical analysis showed that in-hospital mortality was significantly associated with the usage of central venous catheter, infection or colonization by CRKP, particularly NDM-producers. In comparison, survival analysis using Cox proportional hazards regression identified a higher hazard ratio for patients with a stoma and patients treated with imipenem but a lower hazard ratio for patients with NDM-producing CRKP. OXA-48 carbapenemase gene was the predominant carbapenemase gene in this study. As CRKP infection could lead to a high rate of in-hospital mortality, early detection of the isolates was important to reduce their dissemination.
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