{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T04:03:34Z","timestamp":1792123414499,"version":"4.4.0"},"reference-count":63,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,12,13]],"date-time":"2021-12-13T00:00:00Z","timestamp":1639353600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"University of Perugia (Departmental funds for basic research-2019- Monari)","award":["2019-Monari"],"award-info":[{"award-number":["2019-Monari"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Candida albicans is a commensal fungus of the vaginal mucosa and the principal etiological agent of vaginal candidiasis. Vaginal dysbiosis has been reported during vulvovaginal candidiasis (VVC), with a progressive decrease in Lactobacillus crispatus population and an increase in L. iners population. To date, the role of L. iners in VVC pathogenesis remains scarcely explored. Herein we investigated the in vitro effect of L. iners cell-free supernatant (CFS) on the ability of C. albicans to form biofilms. Biomass and metabolic activity were measured by crystal violet and XTT assays. Further, light microscopy was performed to determine the effect of L. iners CFS on biofilm cellular morphology. We found that L. iners CFS induced a significant increase in biofilm formation by C. albicans clinical isolates which were categorized as moderate or weak biofilm producers. This effect was associated with an enhancement of hyphal\/pseudohyphal growth, and the expression levels of HWP1 and ECE1, which are typical hyphae-associated genes, were upregulated. Overall, these results suggest that L. iners contributes to the pathogenesis of VVC and highlight the complexity of the interaction between C. albicans and vaginal lactobacilli. Understanding these interactions could prove essential for the development of new strategies for treating VVC.<\/jats:p>","DOI":"10.3390\/microorganisms9122577","type":"journal-article","created":{"date-parts":[[2021,12,14]],"date-time":"2021-12-14T01:22:05Z","timestamp":1639444925000},"page":"2577","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Lactobacillus iners Cell-Free Supernatant Enhances Biofilm Formation and Hyphal\/Pseudohyphal Growth by Candida albicans Vaginal Isolates"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8334-8325","authenticated-orcid":false,"given":"Samuele","family":"Sabbatini","sequence":"first","affiliation":[{"name":"Department of Medicine and Surgery, Medical Microbiology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sofia","family":"Visconti","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Medical Microbiology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2305-4488","authenticated-orcid":false,"given":"Marco","family":"Gentili","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Pharmacology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eleonora","family":"Lusenti","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Pharmacology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emilia","family":"Nunzi","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5639-4243","authenticated-orcid":false,"given":"Simona","family":"Ronchetti","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Pharmacology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Perito","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Medical Microbiology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1970-2670","authenticated-orcid":false,"given":"Roberta","family":"Gaziano","sequence":"additional","affiliation":[{"name":"Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5027-9367","authenticated-orcid":false,"given":"Claudia","family":"Monari","sequence":"additional","affiliation":[{"name":"Department of Medicine and Surgery, Medical Microbiology Section, University of Perugia, 06129 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1961","DOI":"10.1016\/S0140-6736(07)60917-9","article-title":"Vulvovaginal candidosis","volume":"369","author":"Sobel","year":"2007","journal-title":"Lancet"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Aballea, S., Guelfucci, F., Wagner, J., Khemiri, A., Dietz, J.P., Sobel, J., and Toumi, M. 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