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  1. No Access

    Article

    Sunlight exposure is just one of the factors which influence vitamin D status

    Studies on the determinants of vitamin D status have tended to concentrate on input–exposure to ultraviolet B radiation and the limited sources in food. Yet, vitamin D status, determined by circulating concent...

    M. Abboud, M. S. Rybchyn, R. Rizk, D. R. Fraser… in Photochemical & Photobiological Sciences (2017)

  2. No Access

    Article

    Predictors of vitamin D biochemical status in a large sample of middle-aged male smokers in Finland

    As vitamin D deficiency is considered to be more common in regions with little solar ultraviolet (UV) light in winter, the aim of this study was to analyze predictors of vitamin D status by season within a lar...

    K E Brock, B I Graubard, D R Fraser… in European Journal of Clinical Nutrition (2010)

  3. No Access

    Article

    Relationship between vitamin D status, body composition and physical exercise of adolescent girls in Bei**g

    Little is known about the prevalence of actual vitamin D deficiency in healthy school-aged adolescents, particularly in China. The aim of this study was to examine the prevalence of hypovitaminosis D and to id...

    L. H. Foo, Q. Zhang, K. Zhu, G. Ma, A. Trube, H. Greenfield… in Osteoporosis International (2009)

  4. No Access

    Article

    The ‘first filers’: An examination of the first financial holding companies

    The passage of the Gramm–Leach–Bliley Act in late 1999 profoundly changed the regulatory environment for US banking organisations. For the first time in over 50 years, these organisations could freely engage i...

    J A Adkisson, D R Fraser in Journal of International Banking Regulations (2003)

  5. No Access

    Article

    Low body weight and its association with bone health and pubertal maturation in Chinese girls

    Objective: To investigate the prevalence of low body weight in Bei**g pubertal girls and to establish the cut-off for body mass index (BMI) for underweight for Chinese pubertal girls.

    X Du, H Greenfield, D R Fraser, K Ge, W Zheng… in European Journal of Clinical Nutrition (2003)

  6. Article

    Correction: A new mechanism for induced vitamin D deficiency in calcium deprivation

    A new mechanism for induced vitamin D deficiency in calcium deprivation

    M. R. Clements, L. Johnson, D. R. Fraser in Nature (1990)

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  7. No Access

    Chapter and Conference Paper

    Rational Expectations and Perfect Foresight Prices

    Shiller’s notion of perfect foresight prices is adapted to a crossectional study of 400 firms. Distribution-free statistics, which are unencumbered by the restrictive assumptions underlying parametric methods ...

    G. C. Uselton, D. R. Fraser in A Reappraisal of the Efficiency of Financial Markets (1989)

  8. No Access

    Chapter

    Calcium-Regulating Hormones: Vitamin D

    Since the discovery of vitamin D in the early years of this century, every attempt to fit it into one of the standard categories of biology or chemistry has failed. It was first described as a fat-soluble nutrien...

    D. R. Fraser in Calcium in Human Biology (1988)

  9. No Access

    Article

    A new mechanism for induced vitamin D deficiency in calcium deprivation

    Synthesis of vitamin D in the skin in response to ultraviolet light is the main determinant of vitamin D status in man1 and it is therefore surprising that rickets and osteomalacia, clinical signs of vitamin D de...

    M. R. Clements, L. Johnson, D. R. Fraser in Nature (1987)

  10. No Access

    Article

    A vitamin D encyclopaedia

    Vitamin D. The Calcium Homeostatic Steroid Hormone.

    D.R. Fraser in Nature (1980)

  11. No Access

    Article

    Identification of 1,25-Dihydroxycholecalciferol, a New Kidney Hormone controlling Calcium Metabolism

    A vitamin D metabolite, 25-dihydroxycholecalciferol, is further hydroxylated by kidney before acting as a hormone on target tissues. The structure of this kidney metabolite is now described.

    D. E. M. LAWSON, D. R. FRASER, E. KODICEK, H. R. MORRIS, DUDLEY H. WILLIAMS in Nature (1971)

  12. No Access

    Article

    Unique Biosynthesis by Kidney of a Biologically Active Vitamin D Metabolite

    BEFORE the molecule of vitamin D acts in the control of calcium metabolism it is converted to a functional form in at least two metabolic steps. The first, a side chain hydroxylation at carbon 25, was shown by...

    D. R. FRASER, E. KODICEK in Nature (1970)

  13. No Access

    Article

    Conformational Similarities of Vitamin D and Cholesterol as Enzyme Substrates

    INVESTIGATIONS of the synthesis of vitamin D long chain fatty acid esters found in rats have indicated that cholesterol-specific esterifying enzymes in the small intestine and plasma have vitamin D as substrate1....

    D. R. FRASER, E. KODICEK in Nature (1968)