Perfil clonal e fatores de patogenicidade de Staphylococcus spp. no prognóstico das peritonites em diálise peritoneal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo de amostras de Staphylococcus coagulase-negativa quanto a formação de biofilme

Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

Diagnóstico das infecções relacionadas a cateter em recém-nascidos e epidemiologia molecular dos Staphylococcus spp. isolados

Pós-graduação em Biologia Geral e Aplicada - IBB

Staphylococcus aureus: resistência de virulência e tipagem de MRSA pelas técnicas de MLST e spa typing

Pós-graduação em Doenças Tropicais - FMB

Staphylococcus epidermis e Staphylococcus haemolycus: detecção de genes de biofilme, toxinas, resistência a antimicrobianos e tipagem clonal em isolados de hemoculturas

Pós-graduação em Biologia Geral e Aplicada - IBB

Detecção do operon ica da produção de biofilme, gene mecA de resistência à oxacilina e identificação de espécies de Staphylococcus spp. diretamente dos frascos de hemoculturas pela técnica de PCR multiplex

Pós-graduação em Doenças Tropicais - FMB

Peritoneal Dialysis-Related Peritonitis due to Coagulase-Negative Staphylococcus: A Review of 115 Cases in a Brazilian Center

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Comparação das técnicas semi-quantitativa e quantitativa nas infecções relacionadas a cateter em neonatos e determinação da resistência à oxacilina nos Staphylococcus spp

Study the semi-quantitative and quantitative technique in the diagnosis of catheter-related infections in newborns and to determine oxacillin resistance in Staphylococcus isolated. It was analyzed 353 catheter tips from 273 newborns in the Neonatal Unit of Hospital FMB. To confirm the diagnosis of infection, were analyzed the clinical data of newborns, the presence of at least one positive blood culture and growth of ≥ 1000 CFU/mL on quantitative culture and/or ³15 UFC on semiquantitative culture, with the same microorganism isolation (species and drug sensitivity) in blood culture and no other focus of infection except the catheter. The disk diffusion technique was used to check similarity of strains and resistance to oxacillin. Of the 353 tips analyzed, 39 were included in this study as the inclusion criteria. The semiquantitative culture was positive in 26 (66.7%) catheters and quantitative culture was positive in 24 (61.5%). Of 273 patients, 19 (6.9%) had a diagnosis of catheter-related bloodstream Infection (CR-BSI). Of the 19 episodes of CR-BSI, S. epidermidis was the predominant etiological agent (84.2%). The resistance to the antibiotic methicillin was found in 14 (73.7%) strains of Staphylococcus. The semiquantitative method was more sensitive (79%) compared with the quantitative method (63%). The use of antibiotics may have influenced the sensitivity of the quantitative method as the microorganisms present in the lumen are exposed to higher concentrations of antibiotics administered via the catheter

Detecção de genes de entrotoxinas de Staphylococcus aureus e estafilococos coagulase negativos isolados de leite bovino e de tanques de refrigeração comunitários procedentes de pequenas propriedades da região de Bauru-SP

Pós-graduação em Medicina Veterinária - FMVZ

Coagulase-negative staphylococci strains resistant to oxacillin isolated from neonatal blood cultures

Coagulase-negative staphylococci (CoNS) are the microorganisms most frequently isolated from clinical samples and are commonly found in neonatal blood cultures. Oxacillin is an alternative treatment of choice for CoNS infections; however, resistance to oxacillin can have a substantial impact on healthcare by adversely affecting morbidity and mortality. The objective of this study was to detect and characterise oxacillin-resistant CoNS strains in blood cultures of newborns hospitalised at the neonatal ward of the University Hospital of the Faculty of Medicine of Botucatu. One hundred CoNS strains were isolated and the mecA gene was detected in 69 of the CoNS strains, including 73.2% of Staphylococcus epidermidis strains, 85.7% of Staphylococcus haemolyticus strains, 28.6% of Staphylococcus hominis strains and 50% of Staphylococcus lugdunensis strains. Among these oxacillin-resistant CoNS strains, staphylococcal cassette chromosome mec (SCCmec) type I was identified in 24.6%, type II in 4.3%, type III in 56.5% and type IV in 14.5% of the strains. The data revealed an increase in the percentage of CoNS strains isolated from blood cultures from 1991-2009. Furthermore, a predominant SCCmec profile of the oxacillin-resistant CoNS strains isolated from neonatal intensive care units was identified with a prevalence of SCCmec types found in hospital-acquired strains.