Abnormal Vitamin-D Levels
Authors: C. VELENTZAS
Journal: Annals of Internal Medicine (1977)

Letters1 February 1977Abnormal Vitamin-D LevelsC. VELENTZAS, M.D., D. G. OREOPOULOS, M.D., PH.D., L. BRANDES, B.SC., D. R. WILSON, M.D., A. MARQUEZ-JULIO, M.D.C. VELENTZAS, M.D.Search for more papers by this author, D. G. OREOPOULOS, M.D., PH.D.Search for more papers by this author, L. BRANDES, B.SC.Search for more papers by this author, D. R. WILSON, M.D.Search for more papers by this author, A. MARQUEZ-JULIO, M.D.Search for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-86-2-198 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptThe introduction of Haddad and Chyu's method (1) for the measurement of plasma 25-(OH) vitamin D has highly facilitated the study of vitamin-D metabolism. It has been found that low levels of 25-(OH) vitamin D are present in patients receiving anticonvulsants (2), in patients with derangement of the excretory function of the liver (1), and in patients with vitamin-D deficiency (3). Recently, low levels of plasma 25-(OH) vitamin D have been reported in patients with nephrotic syndrome (4). In contrast, high levels have been observed in persons with heavy exposure to sunlight (1); this causes a seasonal variation of plasma...References1. HADDADCHYU JK: Competitive protein-binding radioassay for 25-hydroxycholecalciferol. J Clin Endocrinol Metab 33:992-995, 1971 CrossrefMedlineGoogle Scholar2. CHRISTIANSENROPROLUND CPM: Incidence of anticonvulsant osteomalacia and effect of Vitamin D: controlled therapeutic trial. Br Med J 4:695-701, 1973 CrossrefMedlineGoogle Scholar3. PREECETOMLINSONRIPOT MSC: Studies of Vitamin D deficiency in man. Q J Med 46:575-589, 1975 Google Scholar4. SCHMIDT-GAYKRITZMASCHIO HEB: 25 OH Vitamin D levels in the nephrotic syndrome (abstract). Kidney Int 10:199, 1976 Google Scholar5. MCLAUGHLINFAIRNEYLESTER MAG: Seasonal variations in serum 25-hydroxycholecalciferol in healthy people. Lancet 1:536-538, 1974 CrossrefMedlineGoogle Scholar This content is PDF only. To continue reading please click on the PDF icon. Author, Article, and Disclosure InformationAffiliations: Room A44, Research Wing The Toronto Western Hospital 399 Bathurst Street Toronto, ON M5T 2S8 Canada PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetails Metrics Cited ByIntroduction to the SymposiumAlcohol and the KidneyRenal bone disease 1990: An unmet challenge for the nephrologistThe Effects of Alcohol on Renal Function and ExcretionEthanol and mineralsDisorders of Divalent Ions and Vitamin D Metabolism in Chronic AlcoholismRole of alcohol in clinical nephrologyVitamin Deficiencies and Excesses: Behavioral Consequences in AdultsEffect of alcohol ingestion on bone and mineral metabolism in ratsBinding Proteins and Receptors for Vitamin D and Its MetabolitesVitamin D and Its Clinical RelationshipsSkeletal Muscle in Hypophosphatemia and Phosphorus DeficiencyChapter 23. Mineral Metabolism and Metabolic Bone Disease 1 February 1977Volume 86, Issue 2Page: 198-198KeywordsAnticonvulsantsBlood plasmaLiverVitamin DVitamin D deficiency Issue Published: 1 February 1977 PDF DownloadLoading ...