Fluoride uptake by Streptococcus mutans 6715
نویسندگان
چکیده
منابع مشابه
In vitro inhibition of adherence of Streptococcus mutans strains by nonadherent mutants of S. mutans 6715.
Four nonadherent mutants from Streptococcus mutans 6715 mutant UAB66 (serotype g) with similar phenotypes were shown to inhibit the adherence of adherence-proficient S. mutans serotypes c and g strains. One mutant, UAB108, was shown to inhibit adherence by wild-type strains representing serotypes a, d, and e as well. This inhibition of adherence was seen with pairs of strains grown in partially...
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To study the nature of fluoride resistance in Streptococcus mutans, we transformed DNA extracted from fluoride-resistant mutants of S. mutans GS-5 into fluoride-sensitive cells of the same strain. Transformation with DNA from first-step mutants produced transformants with resistance to either 600 or 1,000 micrograms of sodium fluoride per ml, both of which are within the first-step resistance r...
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AIM To evaluate the effect of fluoride varnish on Streptococcus mutans count in saliva among 12-year-old school children. MATERIALS AND METHODS A field experiment was conducted to evaluate the effects of fluoride varnish on S. mutans count in saliva among 12-year-old school children. A total of 42 school-going children attending schools in Vadodara district, Gujarat, India, were divided into ...
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For decades, fluoride has been used extensively as an anti-caries agent. It not only protects dental hard tissue, but also inhibits bacterial growth and metabolism. The antimicrobial action of fluoride is shown in three main aspects: the acidogenicity, acidurance, and adherence to the tooth surface. To counteract the toxic effect of fluoride, oral bacteria are able to develop resistance to fluo...
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The intracellular pH (pHi) optimum for glycolysis in Streptococcus mutans Ingbritt was determined to be 7.0 by use of the ionophore gramicidin for manipulation of pHi. Glycolytic activity decreased to zero as the pHi was lowered from 7.0 to 5.0. In contrast, glycolysis had an extracellular pH (pHo) optimum of 6.0 with a much broader profile. The relative insensitivity of glycolysis to the lower...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1977
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.18.3.680-687.1977