Nutritional science of vitamin D in pediatric and adult diseases

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  • Takeda Eiji
    Department of Clinical Nutrition and Food Management, Institute of Health Biosciences, University of Tokushima Graduate School
  • Okumura Hisami
    Department of Clinical Nutrition and Food Management, Institute of Health Biosciences, University of Tokushima Graduate School
  • Taketani Yutaka
    Department of Clinical Nutrition and Food Management, Institute of Health Biosciences, University of Tokushima Graduate School
  • Yamamoto Hironori
    Department of Health and Nutrition, Faculty of Human Life, Jin-ai University

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Other Title
  • 小児疾患および成人疾患からみたビタミンD栄養学
  • ショウニ シッカン オヨビ セイジン シッカン カラ ミタ ビタミン D エイヨウガク

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Abstract

Nutritional science of vitamin D in pediatric and adult diseases was summarized. Vitamin D-dependency type II is a rare disease caused by a disorder of the human vitamin D receptor (VDR). Except for the alopecia, severe rickets and other biochemical abnormalities of 6 patients were reversed by treatment with 3 μg/kg/d of 1α-hydroxyvitamin D_3. A polymorphism at the translation initiation codon of the human VDR gene also affects the bone mineral density (BMD) in Japanese. Attention to phosphorus intake is important because both phosphorus deficiency and overloading impair bone health and quality of life (QOL). Elevation of extracellular phosphorus level causes endothelial dysfunction and medial calcification, which are closely associated with the development of cardiovascular disease (CVD). A dietary approach to limit phosphorus intake is particularly important to prevent bone impairment and CVD in patients with chronic kidney disease (CKD). Increased serum fibroblast growth factor 23 (FGF23)level is an early finding of abnormal mineral metabolism in CKD which causes secondary hyperparathyroidism and resistance of the parathyroid gland to the action of FGF23. In order to improve bone health and QOL in the general population, it should be important that attention to phosphorous intake from processed foods containing phosphorus additive is paied.

Journal

  • VITAMINS

    VITAMINS 88 (10), 499-506, 2014

    THE VITAMIN SOCIETY OF JAPAN

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