Abstract
Etnopharmacological relevanceTraditional uses of Annona muricata L. (soursop) include treatment for cancer, fungal infections, and inflammatory diseases. Its phytoconstituents, mainly acetogenins and alkaloids, are associated with therapeutic activity and clinical application is currently under investigation. However, the application of phytotherapy to treat diseases caused by fungal biofilms, such as vulvovaginal candidiasis (VVC), is still limited. Aim of the studyTo investigate the activity of the ethanolic extract of A. muricata leaves (AML) against biofilms formed by multiresistant Candida albicans (ATCC® 10231) both in vitro and in a VVC experimental model. Material and methodsC. albicans biofilms were grown and their adhesion, proliferation, development, and matrix composition studied by spectrophotometry, scanning electron microscopy (SEM), whole slide imaging (WSI), and biochemical assays without or with AML treatment. In parallel, in vivo experiments were conducted using a murine model of infection treated with different concentrations of the extract and nystatin. Fungal burden and histological changes were investigated. ResultsThe proliferation and adhesion of C. albicans biofilms were significantly reduced as confirmed by SEM and WSI quantitative analyses. Furthermore, the concentration of carbohydrates, proteins and DNA was reduced in the biofilm matrix. In vivo assays demonstrated that AML was able to reduce the fungal burden and the inflammatory process. ConclusionsThe findings further emphasized the therapeutic and scientific potential of AML, thus encouraging its future use in the treatment of VVC.
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