Intra- and Inter-Individual Variations of Blood and Urinary Water-Soluble Vitamins in Japanese Young Adults Consuming a Semi-Purified Diet for 7 Days
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概要
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We have previously reported the levels of water-soluble vitamins in the blood and urine of Japanese young adults. In the present paper, to assess the variations in these water-soluble vitamin markers during the above experiment, we comprehensively determined the intra- and inter-individual variations of blood and urinary water-soluble vitamins to exactly the same amount of water-soluble vitamin intakes in the same experiment. The blood samples before breakfast and the 24-h urine samples were periodically collected from Japanese college male (n=10) and female (n=10) students consuming a semi-purified diet with water-soluble vitamins based on Japanese Dietary Reference Intakes for 7 d, and the intra- and inter-individual variations of blood and urinary water-soluble vitamins or their metabolites in blood and urine samples after adaptation were calculated. Although urinary excretion of vitamin B12 and vitamin C showed high intra-individual variations in both males and females, other urinary vitamins and all blood vitamins showed less than 20% of within-subject coefficients of variance in either male or female. Those showing more than 20% of between-subject coefficients of variances in both male and female were blood vitamin B6, vitamin B12 and folate levels, and urinary vitamin B1, vitamin B2, vitamin B12, nicotinamide metabolites, pantothenic acid, biotin and vitamin C. These results showed that oral administration of constant of water-soluble vitamins generally decreased intra-individual variation, while individual differences in urinary vitamin excretion were observed.
- 財団法人 学会誌刊行センターの論文
- 2009-12-01
著者
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Shibata Katsumi
Dep. Of Food Sci. And Nutrition School Of Human Cultures The Univ. Of Shiga Prefecture
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Shibata Katsumi
Course Of Food Science And Nutrition Department Of Life Style Studies School Of Human Cultures The U
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SHIBATA Katsumi
School of Human Cultures, The University of Shiga Prefecture
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FUKUWATARI Tsutomu
School of Human Cultures, The University of Shiga Prefecture
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WATANABE Toshiaki
School of Humanities for Environmental Policy and Technology, University of Hyogo
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NISHIMUTA Mamoru
Division of Human Nutrition, National Institute of Health and Nutrition
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NAKASHIMA Mieko
Institute of Applied Biochemistry
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Fukuwatari Tsutomu
Dep. Of Food Sci. And Nutrition School Of Human Cultures The Univ. Of Shiga Prefecture
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Shibata Katsumi
Laboratory Of Food Science And Nutrition Department Of Lifestyle Studies School Of Human Cultures Th
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Fukuwatari Tsutomu
Laboratory Of Food Science And Nutrition Department Of Lifestyle Studies School Of Human Cultures Th
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NISHIMUTA MAMORU
Chiba Prefectural University of Health Science
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Nishimuta M
Division Of Human Nutrition National Institute Of Health And Nutrition
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Nishimuta Mamoru
Division Of Health Promotion National Institute Of Nutrition
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Watanabe Toshiaki
School Of Humanities For Environmental Policy And Technology University Of Hyogo
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