Combination of Cetylpyridinium Chloride and Chlorhexidine Acetate: A Promising Candidate for Rapid Killing of Gram-Positive/Gram-Negative Bacteria and Fungi

Combination of Cetylpyridinium Chloride and Chlorhexidine Acetate: A Promising Candidate for Rapid Killing of Gram-Positive/Gram-Negative Bacteria and Fungi

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Published in:Current microbiology. - Springer US, 1978. - 80(2023), 3 vom: 04. Feb.
Main Author: Zhu, Xinghao (Author)
Other Authors: Li, Yang (Author) Zhang, Xinguang (Author) Zhang, Peng (Author) Tian, Qingwu (Author) Ma, Cuiping (Author) Shi, Chao (Author)
Format: electronic Article
Language:English
Published: 2023
ISSN:1432-0991
External Sources:lizenzpflichtig
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520 |a Abstract Combined use of the present antimicrobial drugs has been proved to be an alternative approach for antimicrobial agents’ development since the co-existed of the drugs working in different mechanism have been demonstrated potentially enhance their antimicrobial activity. In this work, antibacterial and antifungal activity of the cetylpyridinium chloride (CPC)/chlorhexidine acetate (CHA) combination was evaluated for the first time, while a universal concentration for the rapid killing of gram-positive/gram-negative bacteria and fungi was also proposed. The minimum inhibitory concentrations (MIC) of CPC and CHA used alone or in combination were first measured, showing that the combined treatment decreased the MIC against tested gram-positive/gram-negative bacteria and fungi to 1/8–1/2. Growth curve assays demonstrated CPC and CHA had dynamic combined effects against the tested microorganisms at the concentration equal to MIC. Besides, combined use of these two drugs could also enhance their biocidal activity, which was illustrated by fluorescence microscopy and SEM images, as well as soluble protein measurement. More importantly, in vitro acute eye and skin irritation tests showed short-term contact with CPC/CHA combination would not cause any damage to mammalian mucosa and skin. In a word, CPC/CHA combination exhibited broad-spectrum antibacterial and antifungal activity against tested gram-positive/gram-negative bacteria and fungi while without any acute irritation to mammalian mucosa and skin, providing a new perspective on the selection of personal disinfectants. 
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700 1 |a Ma, Cuiping  |4 aut 
700 1 |a Shi, Chao  |4 aut 
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