Cytokine induction by extracellular products of oral viridans group streptococci
نویسندگان
چکیده
منابع مشابه
Mannosidase production by viridans group streptococci.
The production of mannosidase activity by all currently recognized species of human viridans group streptococci was determined using an assay in which bacterial growth was dependent on the degradation of the high-mannose-type glycans of RNase B and subsequent utilization of released mannose. RNase B is an excellent substrate for the demonstration of mannosidase activity since it is a glycoprote...
متن کاملInduction of immune response to Streptococcus pneumoniae by administration of oral viridans streptococci via phosphorylcholine determinant.
Expression of the phosphorylcholine (PC) epitope was examined in 48 viridans streptococcal strains, including Streptococcus pneumoniae R36a as the positive control, and their immunogenicity to induce an S. pneumoniae-cross-reactive response was evaluated in mice. Thirteen strains were found to express the PC epitope, while no obvious association was found between the taxonomic categories and PC...
متن کاملElectrophoretic Studies of the Extracellular Products of Group a Streptococci
Concentrates of the extracellular products of group A streptococci were prepared which were essentially free of constituents of the medium. The extracellular products appeared to consist primarily of protein material. The yield of total extracellular products was of the order of magnitude of 10 mg. per liter of supernatant broth. When studied by zone electrophoresis, the concentrates showed pro...
متن کاملPhylogenetic analysis of viridans group streptococci causing endocarditis.
Identification of viridans group streptococci (VGS) to the species level is difficult because VGS exchange genetic material. We performed multilocus DNA target sequencing to assess phylogenetic concordance of VGS for a well-defined clinical syndrome. The hierarchy of sequence data was often discordant, underscoring the importance of establishing biological relevance for finer phylogenetic disti...
متن کاملPrevalence rate and antibiotic susceptibility of oral viridans group streptococci (VGS) in healthy children population.
PURPOSE The aim of this study was to evaluated the prevalence rate of oral viridans group streptococci (VGS) and their susceptibilities to some antibiotics in healthy children. MATERIAL AND METHODS Samples of pharyngeal swabs and supragingival dental plaques for microbiological studies were collected from 206 healthy children, aged 4-18 years. Additionally, 75 samples of carious lesions from ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1993
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.61.12.5252-5260.1993