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In vitro Investigation of the MexAB Efflux Pump From Pseudomonas aeruginosa

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Published on: February 17, 2014

Multidrug Efflux Pumps in Staphylococcus aureus: an Update.

Sofia Santos Costa¹, Miguel Viveiros, Leonard Amaral

¹1Grupo de Micobactérias, Unidade de Microbiologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa (IHMT, UNL), Portugal ; 2Centro de Recursos Microbiológicos (CREM), UNL, Portugal.

The Open Microbiology Journal

|April 10, 2013

Summary

Multidrug efflux pumps are key to the rise of resistant bacteria. These bacterial proteins help extrude drugs, contributing to multidrug resistance (MDR) and posing a significant health concern.

Keywords:

Antibiotics Staphylococcus aureus.biocides efflux pumps multidrug resistance

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Area of Science:

Microbiology
Molecular Biology
Biochemistry

Background:

Multidrug-resistant (MDR) bacteria are a growing global health threat.
Multidrug efflux pumps, cellular detoxification proteins, are implicated in MDR emergence.
These pumps extrude various compounds, contributing to low-level and MDR phenotypes.

Purpose of the Study:

To review current knowledge on MDR efflux pumps in Staphylococcus aureus.
To emphasize the role of S. aureus efflux pumps in antimicrobial resistance and strain selection.
To highlight remaining questions and methodological needs in efflux pump research.

Main Methods:

Literature review of experimental data and recent studies.
Analysis of chromosomal and plasmid-encoded efflux pumps in S. aureus.
Discussion of regulatory networks and resistance mechanisms.

Main Results:

Efflux pumps play a significant role in bacterial resistance to antimicrobials.
They can act as a first-line defense, facilitating the development of stable resistance.
S. aureus efflux pumps contribute to resistance against diverse antimicrobial agents.

Conclusions:

Efflux pumps are critical in the emergence and selection of MDR bacteria, particularly S. aureus.
Further research is needed to elucidate the specific roles of individual efflux pumps and their regulation.
Developing appropriate methodologies is essential to fully understand efflux pump functions and their clinical implications.