Absence of <i>mgrB</i> Alleviates Negative Growth Effects of Colistin Resistance in <i>Enterobacter cloacae</i>

Colistin is an important last-line antibiotic to treat highly resistant <i>Enterobacter</i> infections. Resistance to colistin has emerged among clinical isolates but has been associated with a significant growth defect. Here, we describe a clinical <i>Enterobacter</i> isolat...

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Bibliographic Details
Main Authors: Jessie E. Wozniak, Aroon T. Chande, Eileen M. Burd, Victor I. Band, Sarah W. Satola, Monica M. Farley, Jesse T. Jacob, I. King Jordan, David S. Weiss
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Antibiotics
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Online Access:https://www.mdpi.com/2079-6382/9/11/825
Description
Summary:Colistin is an important last-line antibiotic to treat highly resistant <i>Enterobacter</i> infections. Resistance to colistin has emerged among clinical isolates but has been associated with a significant growth defect. Here, we describe a clinical <i>Enterobacter</i> isolate with a deletion of <i>mgrB</i>, a regulator of colistin resistance, leading to high-level resistance in the absence of a growth defect. The identification of a path to resistance unrestrained by growth defects suggests colistin resistance could become more common in <i>Enterobacter</i>.
ISSN:2079-6382