Streptococcus mutans in a Wild, Sucrose-Eating Rat Population
نویسندگان
چکیده
منابع مشابه
Low sucrose levels promote extensive Streptococcus mutans-induced dental caries.
One-tenth percent sucrose significantly promotes dental caries induced by Streptococcus mutans in young gnotobiotic rats. Maximum caries activity was observed in rats provided a purified diet containing 3% sucrose.
متن کاملPhysiology of "mutans-like" Streptococcus ferus from wild rats.
Strains of Streptococcus ferus isolated from the oral cavities of wild rodents inhabiting sucrose-rich and sucrose-poor environments have many traits in common with the "mutans" streptococci. Thus, S. ferus HD3 and 8S1, like cariogenic S. sobrinus 6715-13, from adherent, alpha (1 leads to 3) glucopyranosyl-glucose linkage-rich, plaquelike deposits in vitro and in vivo through the action of cons...
متن کاملCharacterization of a phosphoenolpyruvate-dependent sucrose phosphotransferase system in Streptococcus mutans.
A phosphoenolpyruvate-dependent sucrose phosphotransferase system has been identified in Streptococcus mutans. Sucrose phosphotransferase activity was inducible by sucrose and had an apparent Km for sucrose of 70 microM. The product of the sucrose phosphotransferase reaction was isolated and identified as sucrose phosphate. Additional analysis revealed that the phosphate group was on the glucos...
متن کاملPreferential utilization of the glucosyl moiety of sucrose by a cariogenic strain of Streptococcus mutans.
The utilization of sucrose by a cariogenic strain of Streptococcus mutans was studied. The soluble and cell-bound sucrose-dependent, polymer-forming sucrase activities constitutively produced by the bacteria during growth on glucose were measured. About eight times more dextransucrase activity was present than levan-sucrase activity. During various states of growth on sucrose, S. mutans accumul...
متن کاملComprehensive mutational analysis of sucrose-metabolizing pathways in Streptococcus mutans reveals novel roles for the sucrose phosphotransferase system permease.
Sucrose is perhaps the most efficient carbohydrate for the promotion of dental caries in humans, and the primary caries pathogen Streptococcus mutans encodes multiple enzymes involved in the metabolism of this disaccharide. Here, we engineered a series of mutants lacking individual or combinations of sucrolytic pathways to understand the control of sucrose catabolism and to determine whether as...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1974
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.10.1.216-219.1974