Pythium insidiosum: insights into biofilm formation and antibiofilm activity of antifungal drugs.

Braz J Microbiol

Graduation Program in Biological Sciences: Pharmacology and Therapeutics, Department of Pharmacology, Basic Health Sciences Institute, Federal University of Rio Grande Do Sul, 2600 Ramiro Barcelos Street, Porto Alegre, RS, 90035-003, Brazil.

Published: December 2023

In this study, we investigate the ability of Pythium insidiosum to form biofilms across various substrates and the antibiofilm efficacy of 8-hydroxyquinoline derivatives (8-HQs). Biofilms of P. insidiosum were cultured on polystyrene plates, contact lenses, and horsehair. We provide the first evidence of P. insidiosum's biofilm-forming capability, thus considerably expanding our understanding of its transmission and pathogenesis. Our results demonstrate that 8-HQs effectively inhibit biofilm formation and eradicate pre-existing biofilms, underscoring their potential as a novel treatment strategy for pythiosis, a disease currently lacking a gold-standard treatment. This finding has particular relevance for ocular pythiosis associated with contact lens usage and potential infection sources in animals. Our results contribute to the scientific knowledge base and directly impact innovative therapeutic interventions' development.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689302PMC
http://dx.doi.org/10.1007/s42770-023-01123-xDOI Listing

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