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The Challenge of Efflux-Mediated Antibiotic Resistance in Gram-Negative Bacteria

Open access
Li, Xian-Zhi, Plésiat, Patrick, Nikaido, Hiroshi·2015·Clinical Microbiology Reviews

Abstract

SUMMARY: The global emergence of multidrug-resistant Gram-negative bacteria is a growing threat to antibiotic therapy. The chromosomally encoded drug efflux mechanisms that are ubiquitous in these bacteria greatly contribute to antibiotic resistance and present a major challenge for antibiotic development. Multidrug pumps, particularly those represented by the clinically relevant AcrAB-TolC and Mex pumps of the resistance-nodulation-division (RND) superfamily, not only mediate intrinsic and acquired multidrug resistance (MDR) but also are involved in other functions, including the bacterial stress response and pathogenicity. Additionally, efflux pumps interact synergistically with other resistance mechanisms (e.g., with the outer membrane permeability barrier) to increase resistance levels. Since the discovery of RND pumps in the early 1990s, remarkable scientific and technological advances have allowed for an in-depth understanding of the structural and biochemical basis, substrate profiles, molecular regulation, and inhibition of MDR pumps. However, the development of clinically useful efflux pump inhibitors and/or new antibiotics that can bypass pump effects continues to be a challenge. Plasmid-borne efflux pump genes (including those for RND pumps) have increasingly been identified. This article highlights the recent progress obtained for organisms of clinical significance, together with methodological considerations for the characterization of MDR pumps.

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Metadata

Authors
Li, X.-Z., Plésiat, P., & Nikaido, H.
Venue
Clinical Microbiology Reviews
Published
2015-04
Volume
28
Issue
2
Pages
337-418
ISSN
  • 0893-8512 (ISSN-L)
  • 1098-6618
OpenAlex
W1999979510
Cited by
1,614
References
16
FWCI
42.19
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The Challenge of Efflux-Mediated Antibiotic Resistance in Gram-Negative Bacteria. https://app.cochat.ai/papers/10.1128/cmr.00117-14
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Li, X.-Z., Plésiat, P., & Nikaido, H. (2015). The Challenge of Efflux-Mediated Antibiotic Resistance in Gram-Negative Bacteria. Clinical Microbiology Reviews. https://doi.org/10.1128/cmr.00117-14

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.