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鲍曼不动杆菌中 PER 型和 NDM 型β-内酰胺酶对头孢地尔罗耐药性的贡献。

Contribution of PER-Type and NDM-Type β-Lactamases to Cefiderocol Resistance in Acinetobacter baumannii.

机构信息

Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourggrid.8534.a, Fribourg, Switzerland.

INSERM European Unit (IAME), University of Fribourggrid.8534.a, Fribourg, Switzerland.

出版信息

Antimicrob Agents Chemother. 2021 Sep 17;65(10):e0087721. doi: 10.1128/AAC.00877-21. Epub 2021 Jul 12.

Abstract

Cefiderocol (FDC) is a recently developed siderophore cephalosporin showing excellent antibacterial activity against Gram-negative bacteria, including Acinetobacter baumannii. By investigating a series of A. baumannii clinical isolates with elevated MICs of FDC, we showed that PER-like β-lactamases and, to a lesser extent, NDM-like β-lactamases, significantly contributed to reduced susceptibility to that antibiotic. Interestingly, we showed that combination of FDC with avibactam exhibited excellent activity against all multidrug-resistant isolates coproducing OXA-23 and PER-type β-lactamases.

摘要

头孢地尔(FDC)是一种新开发的铁载体头孢菌素,对革兰氏阴性菌(包括鲍曼不动杆菌)具有优异的抗菌活性。通过研究一系列 FDC 药敏MIC 升高的鲍曼不动杆菌临床分离株,我们发现 PER 样β-内酰胺酶,以及在较小程度上,NDM 样β-内酰胺酶,显著降低了对该抗生素的敏感性。有趣的是,我们发现 FDC 与阿维巴坦联合使用对所有同时产 OXA-23 和 PER 型β-内酰胺酶的多药耐药株均具有出色的活性。

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