NDLI: In vitro efficacy of antifungal treatment using riboflavin/UV-A (365 nm) combination and amphotericin B.

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In vitro efficacy of antifungal treatment using riboflavin/UV-A (365 nm) combination and amphotericin B.

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In vitro efficacy of antifungal treatment using riboflavin/UV-A (365 nm) combination and amphotericin B.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Speeg-Schatz, Claude Candolfi, Ermanno Sauer, Arnaud Letscher-Bru, Valérie Touboul, David Colin, Joseph Bourcier, Tristan
Description	Country affiliation: France Author Affiliation: Sauer A ( Service d'Ophtalmologie, Hopitaux Universitaires de Strasbourg, Nouvel Hopital Civil, Strasbourg, France. arnaud.sauer@chru-strasbourg.fr)
Abstract	PURPOSE: To demonstrate the antimicrobial properties of riboflavin/UV-A (365 nm) against fungal pathogens. METHODS: The antimicrobial properties of riboflavin/UV-A (365 nm), with or without previous treatment with amphotericin B, were tested on three groups of fungi selected from severe cases of keratomycosis: Candida albicans, Fusarium sp, and Aspergillus fumigatus. They were tested by using Kirby-Bauer discs with empty disc (control), riboflavin 0.1% alone (R), UV-A alone (UV-A), riboflavin 0.1% and additional UV-A exposure (R+UV-A), amphotericin B alone (A), amphotericin B and riboflavin 0.1% (A+R), amphotericin B and UV-A (A+UV-A), amphotericin B and riboflavin 0.1%, and additional UV-A exposure (A+R+UV-A). The mean growth inhibition zone (GIZ) was measured around the discs. RESULTS: C. albicans, Fusarium sp, and A. fumigatus did not show any increased GIZ after treatment without previous amphotericin B medication. However, GIZ was significantly greater after pretreatment with amphotericin B and riboflavin/UV-A (A+R+UV-A) for C. albicans (P = 0.0005), Fusarium sp (P = 0.0023) and A. fumigatus (P = 0.0008) compared with A, A+R, and A+UV-A. CONCLUSIONS: Amphotericin B is believed to interact with fungi membrane sterols to produce aggregates that form transmembrane channels. Given that collagen is one of the principal components of the cornea, it is also probable that amphotericin B may diffuse easily after cross-linking. Previous treatment with amphotericin B allowed riboflavin/UV-A effectiveness against C. albicans, Fusarium sp, and A. fumigatus. This schema might be used in the future for the treatment of keratomycosis.
ISSN	01460404
e-ISSN	15525783
Journal	Investigative Opthalmology & Visual Science
Issue Number	8
Volume Number	51
Language	English
Publisher	Association for Research in Vision and Ophthalmology
Publisher Date	2010-08-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Amphotericin B Pharmacology Antifungal Agents Fungi Drug Effects Radiation Effects Riboflavin Ultraviolet Therapy Aspergillus Fumigatus Isolation & Purification Candida Albicans Colony Count, Microbial Combined Modality Therapy Corneal Ulcer Microbiology Therapy Fusarium Microbial Sensitivity Tests Discipline Ophthalmology
Content Type	Text
Resource Type	Article
Subject	Ophthalmology Sensory Systems Cellular and Molecular Neuroscience

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