Consulta: subjectFacets:"Enterococci"
Registros recuperados: 10
Data/hora: 04/06/2024 11:42:04

Isolation, enumeration, molecular identification and probiotic potential evaluation of lactic acid bacteria isolated from sheep milk
Provedor de dados: 45
Autores: Acurcio,L.B.; Souza,M.R.; Nunes,A.C.; Oliveira,D.L.S.; Sandes,S.H.C.; Alvim,L.B.
Lactic acid bacteria species were molecularly identified in milk from Lacaune, Santa Inês and crossbred sheep breeds and their in vitro probiotic potential was evaluated. The species identified were Enterococcus faecium (56.25%), E. durans (31.25%) and E. casseliflavus (12.5%). No other lactic acid bacteria species, such as lactobacilli, was identified. Most of the isolated enterococci were resistant to gastric pH (2.0) and to 0.3% oxgall. All tested enterococci were resistant to ceftazidime, oxacillin and streptomycin and sensible to clindamycin, erythromycin and penicillin. The resistance to ciprofloxacin, gentamicin, tetracycline and vancomycin varied among tested species. All tested enterococci strongly inhibited (P&lt;0.05) Escherichia coli and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sheep milk; Enterococci; Probiotic potential.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300940

Isolation and characterization of cultivable fermentative bacteria from the intestine of two edible snails, Helixpomatia and Cornu aspersum (Gastropoda: Pulmonata)
Provedor de dados: 48
Autores: CHARRIER,MAR YVONNE; FONTY,GERARD; GAILLARD-MARTINIE,BRIGITTE; AINOUCHE,KADER; ANDANT,GERARD.
The intestinal microbiota of the edible snails Cornu aspersum fSyn: H. aspersa), and Helix pomatia were investigated by culture-based methods, 16S rRNA sequence analyses and phenotypic characterisations. The study was carried out on aestivating snails and two populations of H. pomatia were considered. The cultivable bacteria dominated in the distal part of the intestine, with up to 5.10(9) CFU g -1, but the Swedish H. pomatia appeared significantly less colonised, suggesting a higher sensitivity of its microbiota to climatic change. All the strains, but one, shared &amp;#8805; 97% sequence identity with reference strains. They were arranged into two taxa: the Gamma Proteobacteria with Buttiauxella, Citrobacter, Enterobacter, Kluyvera, Obesumbacterium,...
Tipo: Journal article
Palavras-chave: Clostridium; Edible snails; Enterobacteriaceae; Enterococci; Gut microbiota; Lactococci.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000500010

Molecular characterization of van genes found in vancomycin-resistant Enterococcus spp. isolated from Hospital das Clínicas, FMUSP, São Paulo, Brazil
Provedor de dados: 55
Autores: Caiaffa Filho,H.H.; Almeida,G.D.; Oliveira,G.A.; Sarahyba,L.; Mamizuka,E.M.; Burattini,M.N.
Vancomycin-resistant enterococci strains (VRE) is an important pathogen related with hospital infections in many countries, presenting limited or no therapeutic options for treating serious infections. VRE has presented some different genotypes been VanA and VanB considered to be the most important in hospital environments. In the present study the authors investigated the prevalence of van genes (A, B an C) among clinical isolates of VRE in a five month period at a large tertiary hospital in Sao Paulo, Brazil. The results showed the presence of vanA, but not vanB or vanC in all 43 strains of E. faecalis and five E. faecium studied. The results bring an important issue, due to the possibility of resistance spread of vanA genes, to be monitored and solved...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Enterococci; Vancomycin resistance; Hospital infections.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000300001

Molecular epidemiology and antimicrobial susceptibility of Enterococci recovered from Brazilian intensive care units
Provedor de dados: 55
Autores: Titze-de-Almeida,Ricardo; Rollo Filho,Maurício; Nogueira,Celeste A.; Rodrigues,Isabela P.; Eudes Filho,João; Nascimento,Rejane S. do; Ferreira II,Renato F.; Moraes,Lídia M. P.; Boelens,Hélène; Van Belkum,Alex; Felipe,Maria Sueli Soares.
We studied the antimicrobial resistance and the molecular epidemiology of 99 enterococcal surveillance isolates from two hospitals of Brasília, Brazil. Conventional biochemical tests were used to identify the enterococcal species and the disk diffusion method was used to determine their resistance profiles. Enterococcus faecalis (76%) and E. faecium (9%) were the most prevalent species. No enterococci showed the vanA or vanB vancomycin resistance phenotypes or genotypes. Only the intrinsically resistant species E. gallinarum (n=2) and E. casseliflavus (n=3) harbored the vancomycin-resistance genes vanC1 and vanC2/3, respectively. We found E. faecalis isolates with high-level resistance to gentamicin (22%) and streptomycin (8%) and both E. faecalis and E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterococci; Antimicrobial resistance; Genotyping.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000300002

Novel pharmaceutical molecules against emerging resistant gram-positive cocci
Provedor de dados: 55
Autores: Manfredi,Roberto; Sabbatani,Sergio.
INTRODUCTION: methicillin- and also vancomycin (glycopeptide)-resistant Gram-positive organisms have emerged as an increasingly problematic cause of hospital-acquired infections, also spreading into the community. Vancomycin (glycopeptide) resistance has emerged primarily among Enterococci, but the MIC values of vancomycin for the entire Staphylococcus species are also increasing worldwide. MATERIAL AND METHODS: the aim of our review is to evaluate the efficacy and tolerability of newer antibiotics with activity against methicillin-resistant and glycopeptide-resistant Gram-positive cocci, on the ground of our experience at a tertiary care metropolitan Hospital, and the most recent literature evidences in this field. RESULTS: Quinupristin-dalfopristin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resistant gram-positive cocci; Staphylococci; Enterococci; Pneumococci; Streptococci; Epidemiology; Clinical issues; Novel antimicrobial compounds; Characteristics; Literature evidences.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000100020

Bacteria of fecal origin in mangrove oysters (Crassostrea rhizophorae) in the Cocó River estuary, Ceará State, Brazil
Provedor de dados: 58
Autores: Silva,Ana I.M.; Vieira,Regine H.S.F.; Menezes,Francisca G.R.; Fonteles-Filho,Antonio A.; Torres,Regina C.O.; Sant'Anna,Ernani S.
This study was aimed at evaluating the microbiological quality of mangrove oysters (Crassostrea rhizophorae), collected at a natural oyster bed in the estuary of Cocó river (Fortaleza, Ceará, Brazil). MPN values were used for estimating the total (TC) and fecal (FC) coliforms and Enterococcus spp. TC and FC MPN values in the whole muscle and intervalve liquid ranged from &lt;1.8 to &gt;1,600/g and from &lt;1.8 to 920/g, respectively. The MPN estimates for Enterococcus spp. were between &lt;3.0 and &gt;1,100/g. No correlation was found between the physico-chemical parameters (temperature, salinity and pH) of the surrounding water and the bacteriological contamination levels found in the tested oysters. The only correlation found was between TC and FC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oyster; Total and fecal coliforms; Enterococci; Bacteriocins.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100021

Occurrence of yeasts, enterococci and other enteric bacteria in subgingival biofilm of HIV-positive patients with chronic gingivitis and necrotizing periodontitis
Provedor de dados: 58
Autores: Gaetti-Jardim Júnior,Elerson; Nakano,Viviane; Wahasugui,Thais C.; Cabral,Fátima C.; Gamba,Rosa; Avila-Campos,Mario Julio.
The purpose of this study was to determine the prevalence of enteric bacteria and yeasts in biofilm of 80 HIV-positive patients with plaque-associated gingivitis or necrotizing periodontitis. Patients were subjected to extra, intra oral and radiographic examinations. The oral hygiene, bleeding on probing, gingival conditions, and attachment loss were evaluated. Clinical specimens were collected from gingival crevices or periodontal pockets, transferred to VMGA III, diluted and transferred to Sabouraud Dextrose agar with 100 µg/ml of chloramphenicol, peptone water, EVA broth, EMB agar, SS agar, Bile esculin agar and Brilliant green agar. Isolation of yeasts was carried out at room temperature, for 3-7 days; and for the isolation of enteric microorganisms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV patients; Candida albicans; Enterococci; Enterobacteria.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200011

Biofilm formation on polystyrene under different temperatures by antibiotic resistant Enterococcus faecalis and Enterococcus faecium isolated from food
Provedor de dados: 58
Autores: Marinho,A.R.; Martins,P.D.; Ditmer,E.M.; d'Azevedo,P.A.; Frazzon,J.; Sand,S.T.Van Der; Frazzon,A.P.G.
The ability of antibiotic resistant E. faecalis and E. faecium isolated from food to form biofilm at different temperatures in the absence or presence of 0.75% glucose was evaluated. A synergistic effect on biofilm at 10 °C, 28 °C, 37 °C and 45 °C and glucose was observed for E. faecalis and E. faecium.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterococci; Resistant; Food; Temperatures; Biofilm; Polystyrene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200012

Detection of vancomycin-resistant enterococci (VRE) in stool specimens submitted for Clostridium difficile toxin testing
Provedor de dados: 58
Autores: Özsoy,Sevim; İlki,Arzu.
Abstract The aim of this study was to determine the association between Clostridium difficile (C. difficile) and vancomycin-resistant Enterococcus (VRE) and efficacy of screening stools submitted for C. difficile toxin assay for prevalence of VRE. Between April 2012 and February 2014, 158 stool samples submitted for C. difficile toxin to the Marmara University Microbiology Laboratory, were included in the study. Stool samples were analyzed by enzyme immuno assay test; VIDAS (bioMerieux, France) for Toxin A&amp;B. Samples were inoculated on chromID VRE (bioMerieux, France) and incubated 24 h at 37 °C. Manuel tests and API20 STREP (bioMerieux, France) test were used to identify the Enterococci species. After the species identification, vancomycin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clostridium difficile; Enterococci; Vancomycin resistance (VRE); Colonization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300489

Emergence of VanB phenotype-vanA genotype in vancomycin-resistant enterococci in Brazilian hospital
Provedor de dados: 58
Autores: Zanella,Rosemeire Cobo; Lima,Marisa de Jesus Castro; Tegani,Luciana Soares; Hitomi,Adriana; Brandileone,Maria Cristina de Cunto; Palazzo,Izabel Cristina V.; Darini,Ana Lúcia da Costa.
In Brazil, vancomycin-resistant enterococci (VRE) have been reported as nosocomial pathogens since 1998. Recently, in a VRE surveillance in a hospital, we detected two Enterococcus faecalis isolates with vanA genotype and susceptible to teicoplanin. This is the first report of VanB phenotype-vanA genotype enterococci isolated from humans in Brazil.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Enterococci; VanA genotype; VanB phenotype; Vancomycin; VRE.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200004