ArticleTranslational vision science & technology2023
Methicillin-Resistant Staphylococcus aureus Ocular Infection in Taiwan: Potential Role of Panton-Valentine Leukocidin Gene.
Article in Translational vision science & technology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors at 3 institutions in 2 countries.
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Abstract
Purpose: The relationship between Panton-Valentine leucocidin (PVL), a major virulence factor of Staphylococcus aureus, and disease severity and clinical outcomes remains unclear. We investigated the molecular characteristics and role of the PVL gene in methicillin-resistant S. aureus (MRSA) ocular infection in Taiwan. Methods: Patients with culture-proven S. aureus ocular infection in Chang Gung Memorial Hospital from 2010 to 2017 were included. The presence of the PVL gene was detected for all S. aureus isolates. MRSA isolates were characterized through pulsed-field gel electrophoresis (PFGE), staphylococcal multilocus sequence type, and staphylococcal cassette chromosome mec (SCCmec) typing. Drug susceptibility was examined using disk diffusion method and E-test. Patients' demographics, diagnoses, and outcomes were collected. Results: There were 112 methicillin-sensitive S. aureus and 103 MRSA isolates. Among 50 PVL(+) S. aureus isolates, 43 were MRSA. CC59/PFGE type D/SCCmec IV, VT (38 of 43 isolates, 88%), and CC59/PFGE type C/SCCmec IV (27 of 60 isolates, 45%) were the predominant clones in the PVL(+) and PVL(-) MRSA isolates, respectively. When we compared the two CC59 strains, the patients with PVL(+)/CC59 MSRA infection were significantly younger than those with PVL(-)/CC59 MSRA (39.3 vs. 61.7 years; P = 0.001). PVL(+)/CC59 MSRA caused significantly more eyelid disorders (36.8% vs. 3.7%; P = 0.002) but less keratitis (23.7% vs. 51.9%; P = 0.034). The antibiograms of the two strains were similar. Conclusions: PVL(+) MRSA is significantly associated with eyelid infection, especially in young patients. Translational Relevance: PVL gene plays a role in clinical features of MRSA ocular infections.
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