Values of Water-Soluble Vitamins in Blood and Urine of Japanese Young Men and Women Consuming a Semi-Purified Diet Based on the Japanese Dietary Reference Intakes

Shibata, Katsumi; Fukuwatari, Tsutomu; Ohta, Masahito; Okamoto, Hidemi; Watanabe, Toshiaki; Fukui, Tooru; Nishimuta, Mamoru; Totani, Masayuki; Kimura, Masao; Ohishi, Nobuko; Nakashima, Munetoshi; Watanabe, Fumio; Miyamoto, Emi; Shigeoka, Shigeru; Takeda, T; Murakami, Megumi; Ihara, Hiroshi; Hashizume, Naoki

doi:10.3177/jnsv.51.319

Cited by 41 publications

(43 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many preceding studies have investigated urinary excretion as a biomarker for vitamin intake (1)(2)(3) . We have also reported recently that 24 h urinary levels of water-soluble vitamins correlate highly with their intakes for Japanese college students in a strictly controlled environment (4,5) . Performing a study under a free-living environment without any interventions is the next step to confirm the applicability of the biomarker method.…”

mentioning

confidence: 95%

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese schoolchildren

Tsuji

Fukuwatari

Sasaki

et al. 2010

Public Health Nutr.

Self Cite

View full text Add to dashboard Cite

Objective: To examine the association between 24 h urinary water-soluble vitamin levels and their intakes in free-living Japanese schoolchildren. Design: All foods consumed for four consecutive days were recorded accurately by a weighed food record. A single 24 h urine sample was collected on the fourth day, and the urinary levels of water-soluble vitamins were measured. Setting: An elementary school in Inazawa City, Japan. Subjects: A total of 114 healthy, free-living, Japanese elementary-school children aged 10-12 years. Results: The urinary level of each water-soluble vitamin was correlated positively to its mean intake in the past 2-4 d (vitamin B 1 : r 5 0?42, P , 0?001; vitamin B 2 : r 5 0?43, P , 0?001; vitamin B 6 : r 5 0?49, P , 0?001; niacin: r 5 0?32, P , 0?001; niacin equivalents: r 5 0?32, P , 0?001; pantothenic acid: r 5 0?32, P , 0?001; folic acid: r 5 0?27, P , 0?01; vitamin C: r 5 0?39, P , 0.001), except for vitamin B 12 (r 5 0?10, P 5 NS). Estimated mean intakes of water-soluble vitamins calculated using urinary levels and recovery rates were 97-102 % of their 3 d mean intake, except for vitamin B 12 (79 %). Conclusions:The results show that urinary levels of water-soluble vitamins, except for vitamin B 12 , reflected their recent intakes in free-living Japanese schoolchildren and could be used as a potential biomarker to estimate mean vitamin intake.

show abstract

mentioning

confidence: 95%

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese schoolchildren

Tsuji

Fukuwatari

Sasaki

et al. 2010

Public Health Nutr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Methods using a biomarker for vitamin intake offer an effective approach to evaluate vitamin status. Recently, we have reported that urinary water-soluble vitamin levels are correlated highly with their intake in a strictly controlled environment with interventions (Shibata et al, 2005;Fukuwatari and Shibata, 2008). Performance of a study under a free-living environment without any interventions is the next step to confirm the applicability of methods using a biomarker.…”

Section: Introductionmentioning

confidence: 99%

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese university students

et al. 2010

View full text Add to dashboard Cite

Background/Objectives: We examined the association between 24-h urinary excretion of water-soluble vitamin levels and their intakes in free-living Japanese university students. The design used was cross-sectional study. Subjects/Methods: A total of 216 healthy, free-living male and female Japanese university students aged 18-27 years voluntarily participated in this study, of which 156 students were eligible for this assessment. All foods consumed for 4 consecutive days were recorded accurately by a weighed food record method. A 24-h urine sample was collected on the fourth day, and the urinary levels of water-soluble vitamins were measured. Mean estimated water-soluble vitamin intakes calculated from urinary levels and recovery rates showed 91-101% of their 3-day mean intakes, except for vitamin B 12 (61%). Conclusions: These results showed that urinary water-soluble vitamin levels, except for vitamin B 12 , reflect their recent intakes in free-living Japanese university students, and could be used as a potential biomarker to estimate mean vitamin intake.

show abstract

“…We have previously reported that the concentration was higher in females than in males. 8) In the present experiment, the difference between males and females was not significant as shown in Table 1. The subjects were 9 male and 14 female students who ate freely.…”

Section: Comparison Of the Human Blood Folate Concentrations Between mentioning

confidence: 61%

“…We have already reported that the female blood folate level was higher than that of males when the subjects were fed on a semi-purified diet containing PGA. 8) However, as shown in Table 1 (experiment 5), the blood folate levels between males and females were no different when the subjects ate freely and had not taken PGA. From these data, we hypothesize that PGA in the blood is destroyed, but not 5-MTHF, by exposure of sunlight.…”

Section: Discussionmentioning

confidence: 99%

“…We have reported that the folate level in serum was higher in young Japanese women than in young men who had been given a vitamin mixture containing PGA. 8) We discussed that the phenomenon that a lower folate level in men would be a result of bathing in a lot of sunlight compared with women. On the other hand, the serum folate concentration of subjects exposed to UVA has been reported as unchanged.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Effects of UVA Irradiation on the Concentration of Folate in Human Blood

Fukuwatari

Fujita

Shibata

2009

Bioscience, Biotechnology, and Biochemistry

Self Cite

View full text Add to dashboard Cite

Values of Water-Soluble Vitamins in Blood and Urine of Japanese Young Men and Women Consuming a Semi-Purified Diet Based on the Japanese Dietary Reference Intakes

Cited by 41 publications

References 36 publications

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese schoolchildren

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese schoolchildren

Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese university students

Effects of UVA Irradiation on the Concentration of Folate in Human Blood

Contact Info

Product

Resources

About