Antibacterial and anti-biofilm activities of paeonol against Klebsiella pneumoniae and Enterobacter cloacae. Issue 6 (3rd July 2021)

• Record Type: Journal Article
• Authors: Qian, Weidong; Li, Xinchen; Yang, Min; Mao, Gennian
• Is Part Of: Biofouling. Volume 37:Issue 6(2021)
• Page Start: 666
• Page End: 679
• Publication Date: 2021-07-03
• Subjects: paeonol -- Klebsiella pneumoniae -- Enterobacter cloacae -- minimum inhibitory concentration -- biofilm formation -- biofilm dispersal; Marine fouling organisms -- Periodicals; Materials -- Biodeterioration -- Periodicals; Fouling -- Periodicals; Biodegradation -- Periodicals; Environmental Microbiology -- Periodicals; Water Microbiology -- Periodicals; 576.165
• DOI: 10.1080/08927014.2021.1955249
• Languages: English
• ISSNs: 0892-7014

Abstract

Abstract: Paeonol, the active ingredient of Paeonia lactiflora root bark, is widely used in traditional Chinese medicine. Few studies have reported the antibacterial activity of paeonol against bacterial pathogens. In this study, the antibacterial and anti-biofilm performance of paeonol against Klebsiella pneumoniae and Enterobacter cloacae was investigated as well as its mechanisms of action. Paeonol effectively inhibited the growth of K. pneumoniae and E. cloacae with a minimum inhibitory concentration of 64 μg ml −1 and it was shown to disrupt the integrity of bacterial cell membranes, and alter cell morphology. Moreover, paeonol exhibited a potent inhibitory effect against adhesion and biofilm formation by K. pneumoniae and E. cloacae . In particular, paeonol efficiently compromised cells within biofilms, and dispersed mature biofilms. Therefore, the present study suggests that paeonol is a promising alternative antibacterial and anti-biofilm agent for combating infections caused by planktonic and biofilm cells of K. pneumoniae and E. cloacae .