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Twenty-four-hour urinary water-soluble vitamin levels correlate with their intakes in free-living Japanese schoolchildren.
MedLine Citation:
PMID:  20576202     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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 B1: r = 0·42, P < 0·001; vitamin B2: r = 0·43, P < 0·001; vitamin B6: r = 0·49, P < 0·001; niacin: r = 0·32, P < 0·001; niacin equivalents: r = 0·32, P < 0·001; pantothenic acid: r = 0·32, P < 0·001; folic acid: r = 0·27, P < 0·01; vitamin C: r = 0·39, P < 0.001), except for vitamin B12 (r = 0·10, P = 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 B12 (79 %).
CONCLUSIONS: The results show that urinary levels of water-soluble vitamins, except for vitamin B12, reflected their recent intakes in free-living Japanese schoolchildren and could be used as a potential biomarker to estimate mean vitamin intake.
Authors:
Tomiko Tsuji; Tsutomu Fukuwatari; Satoshi Sasaki; Katsumi Shibata
Publication Detail:
Type:  Journal Article     Date:  2010-06-25
Journal Detail:
Title:  Public health nutrition     Volume:  14     ISSN:  1475-2727     ISO Abbreviation:  Public Health Nutr     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9808463     Medline TA:  Public Health Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  327-33     Citation Subset:  IM    
Affiliation:
1Department of Food Science and Nutrition, School of Human Cultures, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533, Japan.
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