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- W4382632009 abstract "Purpose: Fungal keratitis is a potential corneal contagious disease mainly caused by yeast such as Candida albicans and filamentous fungi such as Aspergillus niger. The response of fungal keratitis to standard antifungals is limited by the poor bioavailability, the limited ocular penetration of antifungal drugs, and the development of microbial resistance. Photodynamic therapy using rose bengal (RB) as a photosensitizer was found to be effective in fungal keratitis management; however, the hydrophilicity of RB limits its corneal penetration. Polypyrrole-coated gold nanoparticles (AuPpy NP) were introduced as a nano-delivery system of RB with high loading capacity. It was proved that (RB-AuPpy NP) exhibited a combined photodynamic/photothermal effect. This study aims to use the combined photodynamic/photothermal effect of RB-AuPpy NP as a novel protocol for treating Fungal Keratitis in albino Wistar rats. Methods: The rats were infected by C. albicans and A. niger. Each infected group of rats was subdivided into groups treated by RB followed by radiation (photodynamic only), AuPpy NP followed by radiation (photothermal only), and RB-AuPpy NP followed by radiation (combined photodynamic/photothermal). Histopathological examination and slit lamp imaging were done to investigate the results. Results: The results revealed that 3 weeks post-treatment, the corneas treated by RB-AuPpy NP (combined photodynamic/photothermal effect) exhibited the best improvement compared to other groups. Conclusion: This protocol can be considered a promising one for Fungal Keratitis management that overcomes microbial resistance problems." @default.
- W4382632009 created "2023-07-01" @default.
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- W4382632009 date "2023-07-01" @default.
- W4382632009 modified "2023-09-27" @default.
- W4382632009 title "Novel Photodynamic/Photothermal Treatment of Fungal Keratitis Using Rose Bengal-Loaded Polypyrrole-Gold Nanoparticles in Wistar Albino Rats" @default.
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- W4382632009 doi "https://doi.org/10.1089/jop.2023.0004" @default.
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