益生菌联合体的无细胞上清液可在体外模型中抑制假丝酵母菌属引起的阴道假丝酵母菌病的菌丝形成并分散生物膜。
Cell-free supernatants of probiotic consortia impede hyphal formation and disperse biofilms of vulvovaginal candidiasis causing Candida in an ex-vivo model.
机构信息
Biofilm Biology Laboratory, Centre for Research On Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed University, Tirumalaisamudram, Thanjavur, Tamil Nadu, 613 401, India.
Department of Pharmacy, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu, 613 401, India.
出版信息
Antonie Van Leeuwenhoek. 2024 Feb 17;117(1):37. doi: 10.1007/s10482-024-01929-1.
Vulvovaginal candidiasis is the second most common vaginal infection caused by drug-resistant Candida species that affects about 70-75% of reproductive age group women across the globe. As current-day antifungal drugs are ineffective against the biofilms formed by the drug-resistant Candida strains, several natural compounds and antagonistic microbes are being explored as alternative antifungal agents. In the present study, we investigated the anti-biofilm activity of Cell-Free Supernatant (CFS) extracted from the commercially available probiotics VSL-3 against the biofilms of Candida species and also evaluated their efficacy in curbing the yeast-to-hyphal transition. Various methodologies like crystal violet staining and scanning electron microscopy were used to study the effect of CFS against the biofilms formed by the species. The ability of CFS to interfere with yeast to hyphal transition in Candida was studied by colony morphology assay and visually confirmed with phase contrast microscopy. The potential of the CFS of the probiotics was also evaluated using goat buccal tissue, a novel ex-vivo model that mimics the vaginal environment. Moreover, the supernatant extracted from VSL-3 had the ability to down-regulate the expression of virulence genes of Candida from the biofilm formed over the ex-vivo model. These results emphasize the anti-fungal and anti-infective properties of the CFS of VSL-3 against drug-resistant Candida strains causing vulvovaginal candidiasis.
外阴阴道假丝酵母菌病是由耐药念珠菌引起的第二大常见阴道感染,影响全球约 70-75%的育龄期妇女。由于目前的抗真菌药物对耐药念珠菌菌株形成的生物膜无效,因此正在探索几种天然化合物和拮抗微生物作为替代抗真菌药物。在本研究中,我们研究了来自市售益生菌 VSL-3 的无细胞上清液 (CFS) 对念珠菌生物膜的抗生物膜活性,并评估了它们抑制酵母向菌丝过渡的功效。使用结晶紫染色和扫描电子显微镜等各种方法研究了 CFS 对各种物种形成的生物膜的影响。通过菌落形态测定和相差显微镜直观确认研究了 CFS 干扰念珠菌酵母向菌丝过渡的能力。还使用山羊颊组织评估了益生菌 CFS 的潜力,这是一种新型的体外模型,模拟阴道环境。此外,从体外模型上形成的生物膜中提取的上清液能够下调念珠菌毒力基因的表达。这些结果强调了 VSL-3 的 CFS 对引起外阴阴道假丝酵母菌病的耐药念珠菌菌株具有抗真菌和抗感染特性。