2006, Número 6
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Rev Invest Clin 2006; 58 (6)
Estudio molecular de Staphylococcus haemolyticus resistente a meticilina en un hospital de México
Castro N, Loaiza-Loeza MS, Calderón-Navarro A, Sánchez A, Silva-Sánchez J
Idioma: Español
Referencias bibliográficas: 24
Paginas: 580-585
Archivo PDF: 86.10 Kb.
RESUMEN
Objetivo. Caracterizar molecularmente los aislamientos clínicos de
Staphylococcus haemolyticus resistentes a meticilina (SHRM) obtenidos de pacientes del Hospital General de Acapulco, Guerrero, México.
Métodos. Se incluyeron 63 aislamientos de
Staphylococcus ssp., colectados durante el periodo de septiembre de 2000 a octubre de 2002. La susceptibilidad antimicrobiana se determinó por el método de difusión en disco y la presencia del gen
mecA se detectó por la técnica de reacción en cadena de la polimerasa (PCR). Los aislamientos de SHRM fueron caracterizados por electroforesis en gel por campos pulsados (PFGE).
Resultados. La frecuencia de
S. haemolyticus correspondió al 28.5% (18 de 63 aislamientos clínicos), todos los aislamientos fueron resistentes a meticilina confirmándose el genotipo
mecA. Se identificó una clona mayoritaria A con ocho subtipos. Esta clona fue identificada durante 20 meses, principalmente de los servicios de cirugía en 55%, seguido de pediatría en 27.7%.
Conclusión. La permanencia de
S. haemolyticus resistente a meticilina como patógeno nosocomial en este hospital sugiere establecer programas de control para disminuir la prevalencia de este patógeno multirresistente.
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