Correlation between DNA-Breaking Activity of Aminosugars and the Amounts of Active Oxygen Molecules Generated in Their Aqueous Solutions(Biological Chemistry)
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概要
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The generation of active oxygen molecules, O_2^-, H_2O_2, and -OH, from the aqueous solution of aminosugars, such as D-glucosamine, was confirmed by their actual measurement. Both the C-2 amino and C-1 aldehyde groups in the aminosugar molecules were indispensable for the generation of active oxygen molecules. The introduction of a C-6 phosphate group to D-glucosamine or the simultaneous use of phosphate ion and D-glucosamine heightened the original activity of D-glucosamine to generate these oxygens, especially・OH. Cu^2^+, which promoted the DNA-breaking activity of aminosugar most at 1 mM, also promoted the generation of・OH most greatly at the same concentration, but neither O^2~ nor H_2O_2 was generated under the same conditions. Superoxide dismutase, catalase, and some radical scavengers inhibited the generation of these active oxygen molecules. Among the active oxygen molecules, only the amount of・OH generated was directly proportional to the DNA-breaking activity of the aminosugar.
- 社団法人日本農芸化学会の論文
- 1991-06-23
著者
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Watanabe K
Faculty Of Pharmaceutical Science School Of Medicine Fukuoka University
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KASHIGE Nobuhiro
Faculty of Pharmaceutical Sciences, Fukuoka University
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WATANABE Kenji
Faculty of Pharmaceutical Sciences, Fukuoka University
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KOJIMA Misao
Faculty of Pharmaceutical Sciences, Fukuoka University
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Kojima Misao
Faculty Of Pharmaceutical Sciences Fukuoka University
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Kojima M
Shinshu Univ. Nagano Jpn
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Kashige Nobuhiro
Faculty Of Pharmaceutical Sciences Fukuoka University
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Watanabe Kenji
Faculty Of Fisheries Kagoshima University
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Kashige Nobuhiro
Faculty of Pharmaceutical Science, Fukuoka University
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WATANABE Kenji
Faculty of Agriculture, Gifu University
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