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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.12
- 수록면
- 255 - 260 (6page)
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초록· 키워드
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Objectives: The aim of this research was to determine the pH-dependent changes in F-ATPase activity and proton fluxes in Streptococcus mutans (S. mutans) as induced by varying the concentration of fluoride ±10 mM (0.058% (v/v)) ethanol.
Methods: S. mutans UA159 was grown in Brain Heart Infusion medium at pH 4.8, 6.8, or 8.8. The FATPase assay was initiated by the addition of ATP, and stopped by adding 10% trichloroacetic acid. For the proton flux assay, bacterial suspensions were titrated to pH 4.6 with 0.5 M HCl, and then 0.5 M HCl was added to decrease the pH values in units of approximately 0.4 pH. The subsequent increase in pH was monitored using a glass electrode. To disrupt the cell membrane, 10% (v/v) butanol was added to the suspensions after 80 minutes.
Results: At all pH levels, fluoride ±10 mM ethanol not only decreased F-ATPase activity but also increased the proton permeability of S. mutans . The largest effects were observed at pH 4.8. Ethanol enhanced these effects only at pH 4.8.
Conclusions: A very low concentration of ethanol enhanced the action of fluoride on F-ATPase activity and the proton permeability in S. mutans at acidic pH levels. We expect that low concentrations of ethanol may be used together with fluoride and/or other anticaries agents to develop more effective anticaries preparations.
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참고문헌 (20)
참고문헌 신청
Loesche WJ / 1986 / Role of Streptococcus mutans in human dental decay / Microbiol Rev 50:353~380
Baker JL / 2015 / Transcriptional profile of glucose-shocked and acid-adapted strains of Streptococcus mutans / Mol Oral Microbiol 30:496~517
J. L Baker / 2016 / Acid-adaptive mechanisms of Streptococcus mutans-the more we know, the more we don’t / Molecular Oral Microbiology
Quivey RG / 2015 / Functional profiling in Streptococcus mutans: construction and examination of a genomic collection of gene deletion mutants / Mol Oral Microbiol 30:474~495
Belli WA / 1991 / Adaptation of Streptococcus mutans and Enterococcus hirae to acid stress in conuous culture / Appl Environ Microbiol 57:1134~1138
Baker JL / 2015 / Transcriptional profile of glucose-shocked and acid-adapted strains of Streptococcus mutans / Mol Oral Microbiol 30:496~517
J. L Baker / 2016 / Acid-adaptive mechanisms of Streptococcus mutans-the more we know, the more we don’t / Molecular Oral Microbiology
Quivey RG / 2015 / Functional profiling in Streptococcus mutans: construction and examination of a genomic collection of gene deletion mutants / Mol Oral Microbiol 30:474~495
Belli WA / 1991 / Adaptation of Streptococcus mutans and Enterococcus hirae to acid stress in conuous culture / Appl Environ Microbiol 57:1134~1138
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