Antifungal Effects of Lactobacillus Acidophilus and Lactobacillus Plantarum Against Different Oral Candida Species Isolated from HIV/ AIDS Patients: an in Vitro Study
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Oropharyngeal Candidiasis (OPC) is an opportunistic fungal infection occurring in immunocompromised patients such as HIV/AIDS. The purpose of this study was to evaluate the antifungal properties of and on different species isolated from oral cavity of HIV/AIDS patients compared to Fluconazole (FLC). In this study, the antifungal effects of both cells and cell-free supernatants (CFSs) of and were investigated against different oral species by co-aggregation, agar overlay interference and broth microdilution assays, respectively. Our results showed that the highest co-aggregation ratio of the two tested Lactic acid bacteria (LAB) was observed for . Both and at cell concentrations 10 to 10 cfu/ml were able to inhibit the growth of most of the oral species, except for , and to some . In this study, MIC and MFC values for CFS of ranged from 100 to 200 µl/ml and 100 to 200 µl/ml, respectively, and MIC and MFC values for CFS of were 50 to 200 µl/ml and 50 to 200 µl/ml, respectively. The ranges of MIC and MFC for FLC were 256-1024 µg/ml and 512-2048 µg/ml, respectively. and displayed the highest and least susceptibility to CFSs of two LAB, respectively. Our findings showed that both cells and CFSs of and had antifungal effects against oral species.
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