Consulta: subjectFacets:"Streptococcus pyogenes"
Registros recuperados: 7
Data/hora: 06/06/2024 13:07:06

Production of bacteriocin-like inhibitory substances (BLIS) by Streptococcus salivarius strains isolated from the tongue and throat of children with and without sore throat
Provedor de dados: 59
Autores: Fantinato,Vera; Jorge,A. O. C.; Shimizu,Mário. T.
Streptococcus salivarius strains, isolated from children with and without sore throat, were tested for bacteriocin production against Streptococcus pyogenes. S. salivarius strains producing bacteriocin-like inhibitory substances (BLIS) against S. pyogenes were more frequently found in children without sore throat. These results suggest that these children may be protected against sore throat by the presence of BLIS-positive S. salivarius strains.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Streptococcus salivarius; Streptococcus pyogenes; Bacteriocin-like-inhibitory-substances; BLIS.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000400007

Resistencia de Streptococcus pyogenes a los antibióticos: Experiencia de once años en un hospital pediátrico de Buenos Aires
Provedor de dados: 38
Autores: Lopardo,Horacio A.; Hernández,Claudia; Vidal,Patricia.
En 1989 era escasa la preocupación acerca de la resistencia de Streptococcus pyogenes a los antibióticos habida cuenta de su sensibilidad universal a la penicilina. No obstante, algunos brotes puntuales en Japón y Australia de cepas resistentes a macrólidos en las décadas anteriores impulsaron a comenzar con la vigilancia de la resistencia de S. pyogenes a los antibióticos, primero en este hospital y luego en forma multicéntrica junto a otros centros de todo el país. En este trabajo se presentan los resultados de esta vigilancia, realizada durante once años (período 1989-2000). No se encontraron cepas resistentes ni con sensibilidad intermedia a penicilina en estreptococos del grupo A. Tampoco fue detectada resistencia a cloranfenicol ni a tetraciclina. La...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pyogenes; Grupo A; Eritromicina; Resistencia.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572004000200002

Epidemiología de la faringitis aguda bacteriana en un hospital general de agudos
Provedor de dados: 38
Autores: Racero,Laura; Ladavaz,María Luz; Capitani,Natalia; Perez,Marcela; Togneri,Ana María.
La faringitis aguda bacteriana (FAB) representa entre un 20 a 30% de las faringitis. El principal agente causal es Streptococcus pyogenes. Se revisó retrospectivamente la información microbiológica disponible entre 2010 y 2016, para analizar la incidencia de la FAB, sus agentes causales, la incidencia de casos según el período estacional y rango etario. Se determinó el porcentaje de resistencia (R) de S. pyogenes a eritromicina y el fenotipo predominante. Se diagnosticó FAB en 21,5% de 3.246 cultivos, donde 89% fueron causados por S. pyogenes. El 35,3% de las FAB se presentó en niños de 7 a 10 años, seguido por el grupo de mayores de 15 años (31,3%). Se evidenció un aumento de faringitis por Streptococcus dysgalactiae subsp. equisimilis en 2011 y 2014;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Faringitis aguda bacteriana; Streptococcus pyogenes; Streptococcus dysgalactiae subsp. equisimilis; Eritromicina; Arcanobacterium haemolyticum.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572018000100011

Evaluation of Medicinal Values of Gymnopetalum chinense (Lour.) Merr., a Lesser Known Cucurbit from Eastern Ghats of India
Provedor de dados: 52
Autores: Kumar,Sanjeet; Das,Gitishree; Shin,Han-Seung; Kumar,Pradeep; Patra,Jayanta Kumar.
ABSTRACT &gt;The in vitro antimicrobial activity of Gymnopetulum chinense (Cucurbitaceae), a lesser known climber of Eastern Ghats and recently recorded species from Odisha, India was studied against five selected human pathogenic bacteria (Streptococcus mutans, S. pyogenes, Vibrio cholerae, Shigella flexneri and Salmonella typhi), by agar well diffusion (AWD), disc diffusion (DD) and broth dilution methods. Different solvent extracts were prepared from the leaves of G. chinense using various solvents viz. n-hexane, chloroform, methanol, acetone and aqueous. The nomenclature, detailed description and photographs of the plant are provided to facilitate its easy identification. The leaf extract showed presence of phenolic compounds, tannin, saponin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial activity; Gymnopetulum chinense; Cucurbits; Streptococcus pyogenes; Antimicrobial resistance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100438

Antibacterial resistance of community-acquired respiratory tract pathogens recovered from patients in Latin America: results from the PROTEKT surveillance study (1999-2000)
Provedor de dados: 55
Autores: Mendes,C.; Marin,M. E.; Quiñones,F.; Sifuentes-Osornio,J.; Cuilty Siller,C.; Castanheira,M.; Zoccoli,C. M.; López,H.; Súcari,A.; Rossi,F.; Barriga Angulo,G.; Segura,A.J.A.; Starling,C.; Mimica,I.; Felmingham,D.
PROTEKT (Prospective Resistant Organism Tracking and Epidemiology for the Ketolide Telithromycin) is a global surveillance study established in 1999 to monitor antibacterial resistance of respiratory tract organisms. Thirteen centers from Argentina, Brazil and Mexico participat ed during 1999-2000; they collected 1,806 isolates (Streptococcus pneumoniae 518, Haemophilus influenzae 520, Moraxella catarrhalis 140, Staphylococcus aureus 351, S. pyogenes 277). Overall, 218 (42.1%) of the S. pneumoniae isolates had reduced susceptibility to penicillin, 79 (15.3%) were penicillin-resistant and 79 (15.3%) were erythromycin-resistant. Mexico had the highest prevalence of penicillin (76.5%) and erythromycin (31.2%) resistance. Of 77 erythromycin-resistant S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PROTEKT; Latin America; Resistance; Respiratory tract infections; Streptococcus pneumoniae; Haemophilus influenzae; Moraxella catarrhalis; Streptococcus pyogenes; Staphylococcus aureus.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000100006

Streptococcus pyogenes meningitis in children: report of two cases and literature review
Provedor de dados: 55
Autores: Arnoni,Mariana V.; Berezin,Eitan N.; Sáfadi,Marco A.P.; Almeida,Flávia J.; Lopes,Cláudia R.C.
Streptococcus pyogenes meningitis (SPM) occurs sporadically, even with the increase of invasive streptococcal disease observed in the past years. We reported two cases of SPM in infants to alert pediatricians for the possibility of this agent as a cause of meningitis in previously healthy children.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pyogenes; Meningitis; Children.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000300015

Improvement of the indirect hemagglutination test for the detection of antibodies to Streptococcus pyogenes
Provedor de dados: 56
Autores: Rubinsky-Elefant,G.; Hoshino-Shimizu,S.; Mamizuka,E.M.; Asciutti,M.M.R.
An indirect hemagglutination test for a seroepidemiological survey of Streptococcus pyogenes infection was standardized. This is an improved modification of the indirect hemagglutination test which utilizes an unstable reagent prepared with fresh blood cells. Two types of bacterial antigens represented by extracellular products and purified streptolysin O were assayed, but only the former antigen gave good results. Pretreatment of the bacterial antigen with 0.15 M NaOH and neutralization to pH 5.5, as well as postfixation of sensitized red cells with 0.1% glutaraldehyde at 56oC for 30 min were found to be essential to give long stability to the reagent in liquid suspension, at least 9 months at 4oC. A total of 564 serum samples with high, moderate and low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pyogenes; Hemagglutination test; Anti-streptolysin O antibodies.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000800008