Restoration of the Antibiotic Susceptibility of Methicillin-Resistant Staphylococcus aureus and Extended-Spectrum β-Lactamases Escherichia coli Through Combination with Chelerythrine

作者：Mingzhi Wang, Bo Ma, Yunfeng Ni, Xiaoyan Xue, Mingkai Li, Jingru Meng, Xiaoxing Luo, Chao Fang, Zheng Hou · 发表于：Microbial Drug Resistance · 年份：2020 · DOI：10.1089/mdr.2020.0044 · 被引用次数：18 · 研究领域：Antibiotic Resistance in Bacteria、Berberine and alkaloids research、Alkaloids: synthesis and pharmacology

Multidrug resistance poses a severe threat to public health and urgently requires new solutions. The natural product chelerythrine (CHE) is a benzophenanthridine alkaloid with antimicrobial potential. In this study, CHE was effective against seven gram-positive bacterial strains, and the minimum inhibitory concentrations (MICs) ranged from 2 to 4 μg/mL. By contrast, CHE showed inferior antibacterial activities against 11 gram-negative strains, and the MICs varied from 16 to 256 μg/mL. We also determined the synergistic/additive effects of combining CHE with nine currently used antibiotics. CHE restored the antibacterial efficacy of the antibiotics against methicillin-resistant Staphylococcus aureus and extended-spectrum β-lactamases producing Escherichia coli . This study suggests that the combination of CHE with conventional antibiotics may be a promising strategy to combat infections caused by multidrug-resistant organisms.