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Titolo:
The time-course of acid excretion, levels of fluorescence dependent on cellular nicotinamide adenine nucleotide and glycolytic intermediates of Streptococcus mutans cells exposed and not exposed to air in the presence of glucose and sorbitol
Autore:
Iwami, Y; Takahashi-Abbe, S; Takahashi, N; Yamada, T; Kano, N; Mayanagi, H;
Indirizzi:
Tohoku Univ, Sch Dent, Dept Oral Biochem, Aoba Ku, Sendai, Miyagi 9808575,Japan Tohoku Univ Sendai Miyagi Japan 9808575 Ku, Sendai, Miyagi 9808575,Japan Tohoku Univ, Sch Dent, Dept Pediat Dent, Aoba Ku, Sendai, Miyagi 9808575, Japan Tohoku Univ Sendai Miyagi Japan 9808575 Ku, Sendai, Miyagi 9808575, Japan
Titolo Testata:
ORAL MICROBIOLOGY AND IMMUNOLOGY
fascicolo: 1, volume: 16, anno: 2001,
pagine: 34 - 39
SICI:
0902-0055(200102)16:1<34:TTOAEL>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRICTLY ANAEROBIC CONDITIONS; ORAL STREPTOCOCCI; METABOLISM; PLAQUE; XYLITOL;
Keywords:
nicotinamide adenine nucleotide; glycolytic intermediates; Streptococcus mutans; glucose metabolism; sorbitol metabolism; acid excretion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Iwami, Y Tohoku Univ, Sch Dent, Dept Oral Biochem, Aoba Ku, 4-1 Seiryo Machi, Sendai, Miyagi 9808575, Japan Tohoku Univ 4-1 Seiryo Machi Sendai Miyagi Japan 9808575 5, Japan
Citazione:
Y. Iwami et al., "The time-course of acid excretion, levels of fluorescence dependent on cellular nicotinamide adenine nucleotide and glycolytic intermediates of Streptococcus mutans cells exposed and not exposed to air in the presence of glucose and sorbitol", ORAL MICROB, 16(1), 2001, pp. 34-39

Abstract

The aim of this study was to examine glucose and sorbitol metabolism in Streptococcus mutans cells exposed and not exposed to air at the coexistence of these compounds by measuring acid excretion, levels of fluorescence dependent on cellular NADH and glycolytic intermediates. An aliquot of bacterial cells grown under strictly anaerobic conditions (anaerobic cells) was exposed temporarily to air (aerobic cells). When glucose was added to the anaerobic cells metabolizing sorbitol, the acid excretion was increased. The level of NADH decreased initially and then increased to the higher plateau level than that during glucose metabolism. The aerobic cells neither metabolized sorbitol nor contained glycolytic intermediates. However, 2 min after glucose was added in the presence of sorbitol, the acid excretion was started slowly and the intermediates appeared. The level of NADH was decreased atfirst and then increased. These results suggested that the anaerobic S. mutans cells metabolized glucose and sorbitol simultaneously, and that in thepresence of sorbitol the aerobic cells could start to metabolize glucose 2min after glucose was added, as the intermediates (phosphoenopyruvate potential) for the glucose transport were accumulated.

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Documento generato il 23/09/20 alle ore 00:15:08