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Unraveling the Novel Effect of Patchouli Alcohol Against the Antibiotic Resistance of

Overview
Journal Front Microbiol
Specialty Microbiology
Date 2021 Jun 21
PMID 34149664
Citations 5
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Abstract

The long-term colonization of can cause various gastrointestinal diseases, and its high genetic variability is prone to antibiotic resistance and leads to failure of clinical treatment. Intracellular survival also contributes to the drug tolerance of . Patchouli alcohol (PA) shows a highly efficient activity against and . And this study aims to explore whether PA can reduce the resistance of and determine the underlying mechanism. Checkerboard and time-kill bactericidal curve assay reveal that the combination of PA and clarithromycin (CLR) promoted the inhibition and bactericidal effect against . Stimulation of CLR leads to the internalization of , but PA can effectively inhibit the invasion induced by CLR. Compared with antibiotics, PA remarkably eradicated the intracellular , and this intracellular sterilized ability was further improved in combination with antibiotics (CLR and metronidazole). The expression of efflux pump genes (, , and ) was dose-dependently downregulated by PA. Digital droplet PCR indicated that the mutant of A2143G can be inhibited by PA. Cellular uptake and transport assays showed that PA is rapidly absorbed, which promotes its activity against intracellular bacteria. Therefore, PA can act synergistically with CLR as a candidate treatment against drug-resistant .

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