Antibacterial activity of some natural products against bacteria expressing a multidrug-resistant phenotype

The present study assessed the antimicrobial activities of various natural products belonging to the terpenoids, alkaloids and phenolics against a collection of Gram-negative multidrug-resistant (MDR) bacteria. The results demonstrated that most of the compounds were extruded by bacterial efflux pum...

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Veröffentlicht in:International journal of antimicrobial agents 2011-02, Vol.37 (2), p.156-161
Hauptverfasser: Kuete, V, Alibert-Franco, S, Eyong, K.O, Ngameni, B, Folefoc, G.N, Nguemeving, J.R, Tangmouo, J.G, Fotso, G.W, Komguem, J, Ouahouo, B.M.W, Bolla, J.-M, Chevalier, J, Ngadjui, B.T, Nkengfack, A.E, Pagès, J.-M
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container_title International journal of antimicrobial agents
container_volume 37
creator Kuete, V
Alibert-Franco, S
Eyong, K.O
Ngameni, B
Folefoc, G.N
Nguemeving, J.R
Tangmouo, J.G
Fotso, G.W
Komguem, J
Ouahouo, B.M.W
Bolla, J.-M
Chevalier, J
Ngadjui, B.T
Nkengfack, A.E
Pagès, J.-M
description The present study assessed the antimicrobial activities of various natural products belonging to the terpenoids, alkaloids and phenolics against a collection of Gram-negative multidrug-resistant (MDR) bacteria. The results demonstrated that most of the compounds were extruded by bacterial efflux pumps. In the presence of the efflux pump inhibitor phenylalanine arginine β-naphthylamide (PAβN), the activities of laurentixanthone B (xanthone), plumbagin (naphthoquinone), 4-hydroxylonchocarpin (flavonoid) and MAB3 (coumarin) increased significantly against all studied MDR bacteria. Laurentixanthone B, 4-hydroxylonchocarpin and MAB3 contained the same pharmacophoric moiety as plumbagin. This study indicates that the AcrAB–TolC (Enterobacteriaceae) and MexAB–OprM (Pseudomonas aeruginosa) efflux pumps are involved in resistance of Gram-negative bacteria to most of the natural products.
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subjects Alkaloids
Alkaloids - metabolism
Alkaloids - pharmacology
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - metabolism
Anti-Bacterial Agents - pharmacology
anti-infective agents
Antibacterial activities
antibacterial properties
Antibiotics. Antiinfectious agents. Antiparasitic agents
Biological and medical sciences
Biological Products - chemistry
Biological Products - pharmacology
Biological Transport
coumarin
Drug Resistance, Multiple, Bacterial
Efflux pump inhibitor
Enterobacteriaceae
flavonoids
Gram-negative bacteria
Gram-Negative Bacteria - drug effects
Humans
Infectious Disease
Medical sciences
Membrane Transport Proteins - metabolism
Multidrug resistance
multiple drug resistance
Pharmacology. Drug treatments
phenolic compounds
Phenolics
Phenols - metabolism
Phenols - pharmacology
phenotype
plumbagin
Pseudomonas aeruginosa
Terpenes - metabolism
Terpenes - pharmacology
Terpenoids
transporters
xanthone
title Antibacterial activity of some natural products against bacteria expressing a multidrug-resistant phenotype
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