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Nutritional status of antioxidant vitamins (A, E, and beta-carotene) in elderly Japanese
- Source :
- Journal of nutritional science and vitaminology.
- Publication Year :
- 1993
-
Abstract
- The nutritional status with respect to vitamins A and E, and beta-carotene was examined in elderly Japanese subjects in two institutions at Osaka and Kyoto. Only the plasma vitamin E level has been determined in the majority of previous investigations. In this study, vitamin E levels were determined in red blood cells (RBCs), platelets (PLT), mononuclear cells (MN), polymorphonuclear cells (PMN), and buccal mucosal cells (BMC), using HPLC with electrochemical detection. Alpha-tocopherol levels in plasma and RBCs did not differ between elderly and young adults, while those in PLT, MN, and BMC were lower in the elderly. Thus, the vitamin E status of elderly Japanese individuals appears to be inadequate of the cellular levels. The daily vitamin E intake of the elderly subjects was below the recommended dietary allowance for the Japanese population. Plasma levels of retinol and beta-carotene were also assessed. The vitamin A status did not differ between elderly and young adults on the basis of the levels of retinol and retinol-binding protein (RBP). The daily intake of retinol (as retinol equivalent) by the elderly subjects was more than 2,000 IU. With respect to beta-carotene, there was a large sex difference (female > male), which was more prominent in the young adults and became smaller in the elderly. This sex difference was partly attributable to a difference in plasma total lipids. No clear age-related trend was noted.
- Subjects :
- Vitamin
Adult
Male
medicine.medical_specialty
medicine.medical_treatment
Medicine (miscellaneous)
Nutritional Status
Antioxidants
chemistry.chemical_compound
Sex Factors
Japan
beta-Carotene
Internal medicine
medicine
Humans
Vitamin E
Vitamin A
Aged
Nutrition and Dietetics
business.industry
Retinol
Age Factors
Retinol Equivalent
beta Carotene
Carotenoids
humanities
Retinol binding protein
Endocrinology
chemistry
Dietary Reference Intake
Female
business
alpha-Tocopherol
Subjects
Details
- ISSN :
- 03014800
- Database :
- OpenAIRE
- Journal :
- Journal of nutritional science and vitaminology
- Accession number :
- edsair.doi.dedup.....1a268c5aaebb0f9806e4159c1ec92faa