Prolonged Intake of Dietary Fermented Soybeans(Natto) with the Reinforced Vitamin K_2 (Menaquinone-7) Enhances Circulating γ- Carboxylated Osteocalcin Concentration in Normal Individuals
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概要
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The change in circulating vitamin K_2 (menaquinone7; MK-7) and γ-carboxylated osteocalcin (Gla osteocalcin) concentrations in normal individuals with the intake of fermented soybean (natto) was investeigated. Forty eight volunteers (forty five males and three females) were divided into three groups of sixteen volunteers each (fifteen males and one female), and each group was given sequentially the fermented soybean (natto; 50g) containing three different contents of MK-7 once a day for 14 d as follows : either regular natto with 865μg MK-7/100g of natto, reinforced natto containing 1295μg MK-7/100g, or 1730μg MK-7/100g. Serum MK-7 was not found in normal individuals who had not had natto intake. Serum MK-7 and γ-carboxylated osteocalcin concentrations were significantly raised 7,10,and 14 d after the start of the intake of reinforced natto containing 1295 or 1730μg MK-7/100g. However, serum γ-carboxylated osteocalcin levels were not significantly elevated by the intake of regular natto, although serum-MK-7 levels were significantly raised. Moreover, serum γ-carboxylated osteocalcin concentration was significantly elevated 14 d after the intake of natto containing either 1295 or 1730μg MK-7/100g, as compared with that of regular natto intake. The present study suggests that the intake of dietary MK-7 in the reinforced natto can stimulate γ-carboxylation of osteocalcin, which plays an important role in bone formation in normal individuals.
- 公益社団法人日本薬学会の論文
- 2000-08-01
著者
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TSUKAMOTO Yoshinori
Central Research Institute, Mitsukan Group Co. Ltd.
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YAMAGUCHI Masayoshi
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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TSUKAMOTO YOSHIHISA
Agroscience Research Laboratories, Sankyo Co., Ltd.
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Tsukamoto Y
Agroscience Research Laboratories Sankyo Co. Ltd.
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Ichise Hideyuki
Central Research Institute, Mitsukan Group Corporation
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Ichise Hideyuki
Central Research Institute Mitsukan Group Co. Ltd.
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Tsukamoto Yoshinori
Centeral Research Institute Mitsukan Group
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Tsukamoto Yoshinori
Central Research Institute Mitsukan Group Co. Ltd.
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Yamaguchi M
Univ. Shizuoka Sizuoka Jpn
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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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