Antibacterial activity and mechanism of luteolin isolated from Lophatherum gracile Brongn. against multidrug-resistant Escherichia coli

文献类型： 外文期刊

第一作者： Ding, Yahao

作者： Ding, Yahao;Wen, Guilan;Ou, Deyuan;Yang, Jian;Song, Xuqin;Ding, Yahao;Wen, Guilan;Wei, Xingke;Luo, Zhengqin;Yang, Jian;Song, Xuqin;Zhou, Hao;Li, Chunjie

作者机构：

关键词： Lophatherum gracile Brongn.; luteolin; multidrug-resistant Escherichia coli; antibacterial mechanism; untargeted metabolomics

期刊名称：FRONTIERS IN PHARMACOLOGY （ 影响因子：4.4； 五年影响因子：5.0 ）

ISSN：

年卷期： 2024 年 15 卷

页码：

收录情况： SCI

摘要： Infections caused by multidrug-resistant (MDR) bacteria have become a major challenge for global healthcare systems. The search for antibacterial compounds from plants has received increasing attention in the fight against MDR bacteria. As a medicinal and edible plant, Lophatherum gracile Brongn. (L. gracile) has favorable antibacterial effect. However, the main antibacterial active compound and its antimicrobial mechanism are not clear. Here, our study first identified the key active compound from L. gracile as luteolin. Meanwhile, the antibacterial effect of luteolin was detected by using the broth microdilution method and time-kill curve analysis. Luteolin can also cause morphological structure degeneration and content leakage, cell wall/membrane damage, ATP synthesis reduction, and downregulation of mRNA expression levels of sulfonamide and quinolones resistance genes in multidrug-resistant Escherichia coli (MDR E. coli). Furthermore, untargeted UPLC/Q-TOF-MS-based metabolomics analysis of the bacterial metabolites revealed that luteolin significantly changed riboflavin energy metabolism, bacterial chemotaxis cell process and glycerophospholipid metabolism of MDR E. coli. This study suggests that luteolin could be a potential new food additive or preservative for controlling MDR E. coli infection and spread.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序