Evaluation of dermal wound healing and in vitro antioxidant efficiency of Bacillus subtilis SPB1 biosurfactant

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• 作者：Raida Zouari^a ; ^b ; Dorsaf Moalla-Rekik^c ; Zouheir Sahnoun^c ; Tarek Rebai^d ; Semia Ellouze-Chaabouni^a ; Dhouha Ghribi-Aydi^a ; ^b ; ^{dhouhag@yahoo.fr}
• 关键词：Bacillus subtilis ; Lipopeptides ; Biosurfactant ; Antioxidant activity ; Wound-healing efficiency
• 刊名：Biomedicine & Pharmacotherapy
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：84
• 期：Complete
• 页码：878-891
• 全文大小：3441 K
• 卷排序：84

文摘

Lipopeptide microbial surfactants are endowed with unique surface properties as well as antimicrobial, anti-wrinkle, moisturizing and free radical scavenging activities. They were introduced safely in dermatological products, as long as they present low cytotoxicity against human cells. The present study was undertaken to evaluate the in vitro antioxidant activities and the wound healing potential of Bacillus subtilis SPB1 lipopeptide biosurfactant on excision wounds induced in experimental rats.ResultsThe scavenging effect of Bacillus subtilis SPB1 biosurfactant on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical at 1 mg/mL was 70.4% (IC50 = 0.55 mg/mL). The biosurfactant produced by Bacillus subtilis SPB1 also showed good reducing power and significant effects in terms of the β-carotene test (IC50 = 2.26 mg/mL) when compared to BHA as a reference standard. Moreover, an interesting ferrous ion chelating activity (80.32%) was found for SPB1 biosurfactant at 1 mg/mL. Furthermore, the topical application of Bacillus subtilis SPB1 biosurfactant based gel on the wound site in a rat model every two days, increased significantly the percentage of wound closure over a period of 13 days, when compared to the untreated and CICAFLORA™-treated groups. Wound healing effect of SPB1 biosurfactant based gel was confirmed by histological study. Biopsies treated with SPB1 lipopeptides showed wholly re-epithelialized wound with a perfect epidermal regeneration.ConclusionsThe present study provides justification for the use of Bacillus subtilis SPB1 lipopeptide biosurfactant based gel for the treatment of normal and complicated wounds as well as skin diseases.