An Original Deal for New Molecule: Reversal of Efflux Pump Activity, A Rational Strategy to Combat Gram-Negative Resistant Bacteria

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Abstract:

The worldwide dissemination of Ā«multi-drug resistantĀ» (MDR) pathogens has severely reduced the efficacy of our antibiotic arsenal and increased the frequency of therapeutic failure. MDR bacteria over-express efflux pumps and this active mechanism can extrude all classes of antibiotics from the cell.

It is necessary to clearly decipher the genetic, structural and functional aspects of this transport system in order to combat this polyselective mechanism. By understanding how efflux pumps work we may be able to develop a new group of antibacterial agents, collectively termed efflux reversals, including membrane permeabilisers, efflux pump inhibitors and flux-competitive agents, specific blockers, energy poisons, etc. Several chemical families of efflux pump inhibitors have been described and characterized. Among them several inhibitor compounds demonstrate efficient blocking of the efflux pump activity involved in the MDR phenotype as observed in many Gram-negative clinical isolates. This new family of molecules represents the first antibacterial class of compound specifically targeting active transport in the bacterial cell.



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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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