RESUMO
Mycoplasma hominis and Ureaplasma urealyticum were cultured and counted in the gastric fluid of 153 neonates divided into three groups: 28 preterm neonates managed in an intensive care unit (Group I); 83 full term neonates with suspected infection (Group II); and 42 full term neonates with no evidence of infection (Group III). The colonization rate (17.85%) in the intensive care unit group was not significantly different from the rates seen in the two other groups. These results do not militate against the pathogenic role of the two organisms studied but rather suggest a contributory role of other factors.
Assuntos
Suco Gástrico/microbiologia , Recém-Nascido/microbiologia , Doenças do Prematuro/microbiologia , Recém-Nascido Prematuro/microbiologia , Infecções por Mycoplasma , Mycoplasma/isolamento & purificação , Infecções por Ureaplasma , Ureaplasma urealyticum/isolamento & purificação , Contagem de Colônia Microbiana , HumanosRESUMO
Mycoplasma hominis and Ureaplasma urealyticum were cultured and counted in the gastric fluid of 153 neonates divided into three groups: 28 preterm neonates managed in an intensive care unit (Group I); 83 full term neonates with suspected infection (Group II); and 42 full term neonates with not evidence of infection (Group III). The colonization rate (17.85%) in the intensive care unit group was not significantly different from the rates seem in the two other groups. These results do not militate against the pathogenic role of the two organisms studied but rather suggest a contributory role of other factors.
Assuntos
Suco Gástrico/microbiologia , Mycoplasma/isolamento & purificação , Ureaplasma/isolamento & purificação , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Mycoplasma/patogenicidade , Ureaplasma/patogenicidadeRESUMO
The biochemical characteristics and the presence of human Fc(gamma) receptors of 52 throat isolates of group C beta-hemolytic streptococci were examined. Among these isolates, 38 were identified as "Streptococcus milleri" and 14 were identified as "Streptococcus equisimilis." The differentiation of group C "S. equisimilis" from "S. milleri" with identical group antigens was easy to perform by the measurement of the size of the hemolytic zone on a sheep blood agar plate in an anaerobic atmosphere and by biochemical tests (Voges-Proskauer test). A clear-cut criterion for differentiation was noted among these isolates, i.e., the presence of Fc(gamma) receptors. "S. equisimilis," which are generally associated with pharyngitis, possess human Fc(gamma) receptors, while "S. milleri", which are generally isolated from healthy persons, have no such receptors.
Assuntos
Faringe/microbiologia , Receptores Fc/análise , Streptococcus/classificação , Humanos , Faringite/microbiologia , Infecções Estreptocócicas/microbiologia , Streptococcus/imunologia , Streptococcus/isolamento & purificaçãoRESUMO
The frequent association of Torulopsis glabrata with other yeasts of the genus Candida in the same clinical specimen may lead to false results because of the large number of negative characters in this yeast. We describe here a technique of detection based on the pigmentation of colonies obtained by reduction of triphenyl-tetrazolium chloride added to the Sabouraud medium.