Bioavailability of Zinc Yeast in Rats : Stimulatory Effect on Bone Calcification in Vivo
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概要
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The bioavailability of zinc yeast as a functional food ingredient in rats was investigated. Zinc yeast, zinc sulfate, or zinc oxide was used. Serum zinc concentrations were significantly increased by a single oral administration of zinc yeast, zinc sulfate or zinc oxide at a dose of 10 mg Zn/100 g body weight. A significant increase was observed 1 hr after administration and it was also seen with the lowest dose of Zn 0.5 mg/100 g of zinc yeast or zinc oxide. A single oral administration of zinc yeast, zinc sulfate, or zinc oxide (10 mg Zn/100 g) caused a significant increase in liver zinc content. A significant increase in femoral-diaphyseal and -metaphyseal zinc contents was observed with the administration of zinc yeast or zinc sulfate. When zinc yeast or zinc oxide (10 mg Zn/100 g) was orally admin- istered once daily for 7 days to rats, a significant increase in zinc levels in the serum, liver, and femoral-metaphyseal tissues was seen. Femoral-diaphyseal zinc content was significantly increased with the administration of zinc yeast. A significant increase in calcium content and alkaline phosphatase activity in the femoral-diaphyseal and -metaphyseal tissues occurred with the administration of zinc yeast or zinc oxide. The effect of zinc yeast was greater than that of zinc oxide. This study demonstrated that zinc yeast has high bioavailability in rats, and that its administration induces an anabolic effect on bone calcification in vivo. Zinc yeast may be useful as a functional food ingredient.
- 公益社団法人日本薬学会の論文
- 2004-02-01
著者
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YAMAGUCHI Masayoshi
Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, Unive
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IGARASHI Aki
Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, Unive
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Uchiyama Satoshi
Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, Unive
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Yamaguchi Masayoshi
Laboratory Of Endocrinology And Molecular Metabolism Graduate School Of Nutritional Sciences Univers
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Igarashi A
Laboratory Of Endocrinology And Molecular Metabolism Graduate School Of Nutritional Sciences Univers
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Igarashi Aki
Laboratory Of Endocrinology And Molecular Metabolism Graduate School Of Nutritional Sciences Univers
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Yamaguchi M
Univ. Shizuoka Sizuoka Jpn
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Uchiyama Satoshi
Laboratory Of Endocrinology And Molecular Metabolism Graduate School Of Nutritional Sciences Univers
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Uchiyama Satoshi
Laboratory Of Biology Faculty Of Education And Human Sciences Niigata University
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Yamaguchi Masayoshi
Laboratory Of Endocrinology And Molecular Metabolism Graduate School Of Nutritional Sciences Univers
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Yamaguchi Masayoshi
Laboratories Of Metabolism And Endocrinology School Of Food And Nutritional Sciences The University
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