LARISSA MARQUES DE OLIVEIRA

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LIM/54 - Laboratório de Bacteriologia, Hospital das Clínicas, Faculdade de Medicina

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Revista / Livro: Diagnostic Microbiology and Infectious Disease ×

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  • article 19 Citação(ões) na Scopus
    Colistin-resistant Enterobacteriaceae infections: clinical and molecular characterization and analysis of in vitro synergy
    (2017) CARRILLHO, Claudia M. D. de Maio; GAUDERETO, Juliana J.; MARTINS, Roberta Cristina Ruedas; LIMA, Victor Augusto Camarinha de Castro; OLIVEIRA, Larissa M. de; URBANO, Mariana R.; PEROZIN, Jamile S.; LEVIN, Anna Sara; COSTA, Silvia F.
    We described 27 polyclonal colistin-resistant Enterobacteriaceae (MIC 4-16 mu g/mL) infections (12 pneumonia, 12 urinary tract infection (UTI), two Bacteremia, and one skin/soft tissue infection) in which 74% harbored KPC. The isolates were polyclonal, 6 STs were identified and the colistin resistance was due to chromosome mutations. Eight patients with UTI received monotherapy, and combination therapy was given to 19 patients. Overall mortality was 37%. In vitro synergy using time-kill assay was observed in 14 of 19 (74%) isolates tested; the synergistic effect was observed for almost all isolates for the combination of three drugs: colistin, amikacin, and tigecycline. The Kaplan-Meier survival curve showed no significant difference comparing combination therapy with 2, 3, or more drugs and risk factors associated with death were dialysis and shock. These findings reinforce the fact that colistin in combination with other classes of drugs can be useful in treating infections caused by colistin-resistant CRE.