Fusarium Keratitis: Genotyping, in Vitro Susceptibility and Clinical Outcomes

Fusarium Keratitis: Genotyping, in Vitro Susceptibility and Clinical Outcomes

Author Oechsler, Rafael Allan Autor UNIFESP Google Scholar
Feilmeier, Michael R. Google Scholar
Miller, Darlene Google Scholar
Shi, Wei Google Scholar
Hofling-Lima, Ana Luisa Autor UNIFESP Google Scholar
Alfonso, Eduardo C. Google Scholar
Institution Univ Miami
Universidade Federal de São Paulo (UNIFESP)
Abstract Purpose: To determine differences in the clinical characteristics and antifungal susceptibility patterns among molecularly characterized ocular Fusarium sp isolates.Methods: Fifty-eight isolates of Fusarium sp obtained from 52 eyes of 52 patients were retrieved from the Ocular Microbiology Laboratory of the Bascom Palmer Eye Institute and grown in pure culture. These isolates were characterized based on DNA sequence analysis of the ITS1/2 and ribosomal deoxyribonucleic acid regions. Antifungal susceptibilities were determined for each isolate using broth microdilution methods, and the corresponding medical records were reviewed to determine the clinical outcomes.Results: Fusarium solani isolates had significantly higher values of minimum inhibitory concentration for 90% isolates (MIC90) with voriconazole than F. non-solani organisms (16 and 4 mu g/mL, respectively). Isolates of F. solani also exhibited a significantly longer time to cure (65 vs. 40.5 days), a worse follow-up best-corrected visual acuity (20/118 vs. 20/36), and an increased need for urgent surgical management (7 vs. 0 penetrating keratoplasties) when compared with those of F. non-solani.Conclusions: This is the first report to examine the correlation between ocular genotyped Fusarium sp and clinical outcomes. It supports the overall worse prognosis of F. solani versus F. non-solani isolates, including higher voriconazole resistance by the former. the clinical implementation of molecular-based diagnostics and antifungal efficacy testing may yield important prognostic and therapeutic information that could improve the management of fungal ocular infections.
Keywords keratitis
Fusarium sp
clinical outcomes
Language English
Sponsor Research to Prevent Blindness
National Eye Institute
University of Miami Wallace H. Coulter Center for Translational Research
Bausch Lomb Inc
Alcon Labs
Date 2013-05-01
Published in Cornea. Philadelphia: Lippincott Williams & Wilkins, v. 32, n. 5, p. 667-673, 2013.
ISSN 0277-3740 (Sherpa/Romeo, impact factor)
Publisher Lippincott Williams & Wilkins
Extent 667-673
Origin http://dx.doi.org/10.1097/ICO.0b013e318277ac74
Access rights Closed access
Type Article
Web of Science ID WOS:000317467300036
URI http://repositorio.unifesp.br/handle/11600/36317

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