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Type: Artigo
Title: Statins and antimicrobial effects: simvastatin as a potential drug against staphylococcus aureus biofilm
Author: Graziano, Talita Signoreti
Cuzzullin, Maria Claudia
Franco, Gilson Cesar
Schwartz-Filho, Humberto Osvaldo
de Andrade, Eduardo Dias
Groppo, Francisco Carlos
Cogo-Mueller, Karina
Abstract: Statins are important lipid-lowering agents with other pleiotropic effects. Several studies have explored a possible protective effect of statins to reduce the morbidity and mortality of many infectious diseases. Staphylococcus aureus is one of the main pathogens implicated in nosocomial infections; its ability to form biofilms makes treatment difficult. The present study observed the MIC of atorvastatin, pravastatin and simvastatin against S. aureus, Pseudomonas aeruginosa, Escherichia coli and Enterococcus faecalis. Simvastatin was the only agent with activity against clinical isolates and reference strains of methicilin-sensitive S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA). Thus, the effects of simvastatin on the growth, viability and biofilm formation of S. aureus were tested. In addition, a possible synergistic effect between simvastatin and vancomycin was evaluated. Simvastatin's MIC was 15.65 mu g/mL for S. aureus 29213 and 31.25 mu g/mL for the other strains of S. aureus. The effect of simvastatin was bactericidal at 4xMIC and bacteriostatic at the MIC concentration. No synergistic effect was found between simvastatin and vancomycin. However, the results obtained against S. aureus biofilms showed that, in addition to inhibiting adhesion and biofilm formation at concentrations from 1/16xMIC to 4xMIC, simvastatin was also able to act against mature biofilms, reducing cell viability and extra-polysaccharide production. In conclusion, simvastatin showed pronounced antimicrobial activity against S. aureus biofilms, reducing their formation and viability
Subject: Inibidores de hidroximetilglutaril-CoA redutases
Staphylococcus aureus
Country: Estados Unidos
Editor: Public Library of Science
Rights: Aberto
Identifier DOI: 10.1371/journal.pone.0128098
Date Issue: 2015
Appears in Collections:FOP - Artigos e Outros Documentos

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