ABSTRACT
En los últimos años se ha informado la aparición de Staphylococcus aureus resistente a la meticilina como causa de infecciones extrahospitalarias graves. En Colombia, en el 2006, se publicó el primer reporte de S. aureus como causa de infección de piel y tejidos blandos; en esta ocasión, presentamos el primer reporte de neumonía necrosante con etiología por S. aureus, en dos pacientes adultos que se caracterizaron por presentar progresión clínica rápida, estancia prolongada en cuidados intensivos y complicación de la neumonía con aparición de empiema. Ambos desarrollaron falla renal aguda, por lo que fueron manejados con linezolide, con adecuada respuesta clínica. Con la caracterización molecular de los aislamientos se confirmó la presencia del gen mecA que porta el casete SCCmec tipo IV y la producción de la toxina leucocidina Panton-Valentine.
The emergence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) as a cause of severe infections has been described in the recent years. In 2006, the first report of skin and soft tissue infection by CA-MRSA was published in Colombia. Herein, two additional cases of CA-MRSA are reported with a clinical course characterized by rapid progression, prolonged stay in the intensive care unit and complication of pneumonia with the onset of empyema. Both adult patients developed acute renal failure, and were treated with linezolide; the subsequent clinical response showed adequate treatment response. Molecular characterization of the isolates indicated the presence of the mecA gene carrying the cassette SCCmec type IV and the production of the toxin panton-valentine leukocidin.
Subject(s)
Acute Kidney Injury , Community-Acquired Infections , Drug Resistance, Bacterial , Methicillin Resistance , Pneumonia, Staphylococcal , Staphylococcus aureus , Colombia , LeukocidinsABSTRACT
The emergence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) as a cause of severe infections has been described in the recent years. In 2006, the first report of skin and soft tissue infection by CA-MRSA was published in Colombia. Herein, two additional cases of CA-MRSA are reported with a clinical course characterized by rapid progression, prolonged stay in the intensive care unit and complication of pneumonia with the onset of empyema. Both adult patients developed acute renal failure, and were treated with linezolide; the subsequent clinical response showed adequate treatment response. Molecular characterization of the isolates indicated the presence of the mecA gene carrying the cassette SCCmec type IV and the production of the toxin panton-valentine leukocidin.
