Broad spectrum in vitro microbicidal activity of benzoyl peroxide against microorganisms related to cutaneous diseases

Autor: Masataka Oda, Shoji Kanayama, Naoki Hayashi, Kazuaki Okamoto, Tatsumi Matsumoto, Shiori Fujiwara, Koki Fujikawa, Fumiaki Ikeda, Sachi Mori, Naoki Nozawa
Rok vydání: 2020
Předmět:
Zdroj: The Journal of Dermatology
ISSN: 1346-8138
0385-2407
DOI: 10.1111/1346-8138.15739
Popis: The in vitro microbicidal activity of benzoyl peroxide against Cutibacterium acnes, Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Malassezia furfur, Malassezia restricta, and Malassezia globosa was investigated. These strains were incubated for 1 h in the presence of 0.25, 0.5, 1, or 2 mmol/L benzoyl peroxide in phosphate buffered saline supplemented with 0.1% glycerol and 2% Tween 80. After exposure to benzoyl peroxide, counts of viable Gram‐positive bacteria and fungi were markedly decreased, whereas counts of Gram‐negative bacteria were unchanged. Transmission electron microscopy images showed a decrease in electron density and the destruction of C. acnes and M. restricta cell walls after exposure to 2 mmol/L benzoyl peroxide. In conclusion, this study showed that benzoyl peroxide has a potent and rapid microbicidal activity against Gram‐positive bacteria and fungi that are associated with various cutaneous diseases. This suggests that the direct destruction of bacterial cell walls by benzoyl peroxide is an essential mechanism of its rapid and potent microbicidal activity against microorganisms.
Databáze: OpenAIRE