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Abstract Title:

Study on Demethoxycurcumin as a Promising Approach to Reverse Methicillin-Resistance of.

Abstract Source:

Int J Mol Sci. 2021 Apr 6 ;22(7). Epub 2021 Apr 6. PMID: 33917423

Abstract Author(s):

Qian-Qian Li, Ok-Hwa Kang, Dong-Yeul Kwon

Article Affiliation:

Qian-Qian Li

Abstract:

Methicillin-resistant(MRSA) has always been a threatening pathogen. Research on phytochemical components that can replace antibiotics with limited efficacy may be an innovative method to solve intractable MRSA infections. The present study was devoted to investigate the antibacterial activity of the natural compound demethoxycurcumin (DMC) against MRSA and explore its possible mechanism for eliminating MRSA. The minimum inhibitory concentrations (MICs) of DMC against MRSA strains was determined by the broth microdilution method, and the results showed that the MIC of DMC was 62.5μg/mL. The synergistic effects of DMC and antibiotics were investigated by the checkerboard method and the time-kill assay. The ATP synthase inhibitors were employed to block the metabolic ability of bacteria to explore their synergistic effect on the antibacterial ability of DMC. In addition, western blot analysis and qRT-PCR were performed to detect the proteins and genes related to drug resistance andexotoxins. As results, DMC hindered the translation of penicillin-binding protein 2a (PBP2a) and staphylococcal enterotoxin and reduced the transcription of related genes. This study provides experimental evidences that DMC has the potential to be a candidate substance for the treatment of MRSA infections.

Study Type : In Vitro Study

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Sayer Ji
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