Catalase-negative, methicillin-resistant Staphylococcus aureus as a cause of septicemia

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Characterization of a catalase-negative methicillin-resistant Staphylococcus aureus strain.

We describe an unusual clinical strain of catalase-negative methicillin-resistant Staphylococcus aureus sensu stricto. Sequence analysis of its catalase gene showed 99.60% identities to the catalase genes of the reference strains. A 5-base deletion, however, led to a shift of the nucleotide reading frame and a loss of the enzymatic activity.

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The outcome of treatment of 48 episodes of septicemia due to methicillin-resistant Staphylococcus aureus (MRSA) in 44 patients was assessed. Twenty-six of the patients died; nineteen of them died of infection, and infection was a major contributing factor to the deaths of the remaining seven patients. Fourteen of fifteen patients treated with inadequate antibiotic therapy died, and the other pa...

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Methicillin Resistant Staphylococcus aureus

Etiology Staphylococcus aureus is a Gram positive, coagulase positive coccus in the family Staphylococcaceae. Methicillin-resistant S. aureus (MRSA) strains are resistant to methicillin and essentially all other beta-lactam antibiotics. MRSA isolates are genetically heterogeneous. 1 Some strains, which are called epidemic strains; are more prevalent and can spread within or between hospitals an...

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Methicillin Resistant Staphylococcus aureus

Staphylococcus aureus is an opportunistic pathogen often carried asymptomatically on the human body. Methicillin-resistant S. aureus (MRSA) strains have acquired a gene that makes them resistant to all beta-lactam antibiotics. Hospital-associated strains of this organism are serious nosocomial pathogens that have become resistant to most common antibiotics, and treatment can be challenging. Com...

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Methicillin-resistant Staphylococcus aureus

received much attention over the past 30 years because of its increasing incidence and the morbidity and excess hospital stay length associated with MRSA infection. Th e current controversy about the eff ectiveness of control measures, notably screening, derives from the confl icting results of available studies, lack of well-designed controlled studies, and concomitant use of several intervent...

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ژورنال

عنوان ژورنال: Jornal Brasileiro de Patologia e Medicina Laboratorial

سال: 2003

ISSN: 1676-2444

DOI: 10.1590/s1676-24442003000100009