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Article Publish Status: FREE
Abstract Title:

Evaluation of Physiological Effects Induced by Manuka Honey Uponand.

Abstract Source:

Microorganisms. 2019 Aug 13 ;7(8). Epub 2019 Aug 13. PMID: 31412630

Abstract Author(s):

Patricia Combarros-Fuertes, Leticia M Estevinho, Rita Teixeira-Santos, Acácio G Rodrigues, Cidália Pina-Vaz, Jose M Fresno, M Eugenia Tornadijo

Article Affiliation:

Patricia Combarros-Fuertes

Abstract:

Several studies have explored the antimicrobial properties of manuka honey (MkH). However, the data available regarding antibacterial action mechanisms are scarcer. The aim of this study was to scrutinize and characterize primary effects of manuka honey (MkH) upon the physiological status ofand(as Gram-positive and Gram-negative bacteria models, respectively), using flow cytometry (FC) to reveal its antibacterial action mechanisms. Effects of MkH on membrane potential, membrane integrity and metabolic activity were assessed using different fluorochromes in a 180 min time course assay. Time-kill experiments were carried out under the same conditions. Additionally, MkH effect on efflux pumps was also studied in anstrain with an over-expression of several efflux pumps. Exposure of bacteria to MkH resulted in physiological changes related to membrane potential and membrane integrity; these effects displayed slight differences among bacteria. MkH induced a remarkable metabolic disruption as primary physiological effect uponand was able to block efflux pump activity in a dose-dependent fashion in thestrain.

Study Type : In Vitro Study

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