Vitamin D Metabolism

Iqbal SJ . Vitamin D metabolism and the clinical aspects of measuring metabolites. Ann Clin Biochem 1994; 31: 109–24.

Trechsel U Eisman JA Fischer JA Bonjour JP Fleisch H. Calcium-dependent, parathyroid hormone-independent regulation of 1,25-dihydroxyvitamin D. Am J Physiol 1980; 239: E119–E124.

Hove K Horst RL Littledike ET Beitz DC . Infusions of parathyroid hormone in ruminants: Hypercalcemia and reduced plasma 1,25-dihydroxyvitamin D concentrations. Endocrinology 1984; 114: 897–903.

Bushinsky DA Riera GS Favus MJ Coe FL . Evidence that blood ionised calcium can regulate serum 1,25-(OH)₂D₃ independently of parathyroid hormone and phosphorous in the rat. J Clin Invest 1985; 76: 1599–604.

Hulter HN Halloran BP Toto RD Peterson JC . Long-term control of plasma calcitriol concentration in dogs and humans. Dominant role of plasma calcium concentration in experimental hyperparathyroidism. J Clin Invest 1985; 76: 695–702.

Lund B Sorensen OH Lund B Bishop JE Norman AW . Stimulation of 1,25-dihydroxyvitamin D production by parathyroid hormone and hypocalcaemia in man. J Clin Endocrinol Metab 1980; 50: 480–4.

Dawson-Hughes B Harris S Dallal GE . Serum ionised calcium, as well as phosphorus and parathyroid hormone, is associated with the plasma 1,25-dihydroxyvitamin D₃ concentration in normal post-menopausal women. J Bone Min Res 1991; 6: 461–8.

Portale AA Halloran BP Morris RC . Physiologic regulation of the serum concentration of 1,25-dihydroxyvitamin D by phosphorous in normal men. J Clin Invest 1989; 83: 1494–9.

Ho SC MacDonald D Chan C Fan YK Chan SSG Swaminathan R. Determinants of serum 1,25 dihydroxyvitamin D concentration in healthy premenopausal subjects. Clin Chim Acta 1994 (in press).

Cunningham J Fraher LJ Clemens TL Revell PA Papapoulos SE . Chronic acidosis with metabolic bone disease. Effect of alkali on bone morphology and vitamin D metabolism. Am J Med 1982; 73: 199–204.

Langman CB . Calcitriol metabolism during chronic metabolic acidosis. Semin Nephrol 1989; 9: 65–71.

Kawashima H Kraut JA Kurokawa K. Metabolic acidosis suppresses 25-hydroxyvitamin D₃-1-alpha-hydroxylase in the rat kidney. Distinct site and mechanism of action. J Clin Invest 1982; 70: 135–40.

Reddy GS Jones G Kooh SW Frazer D. Inhibition of 25-hydroxyvitamin D₃-1-hydroxylase by chronic metabolic acidosis. Am J Physiol 1982; 243: E265–271.

Bushinsky DA Favus MJ Schneider AB Sen PK Sharwood LM Coe FL . Effects of metabolic acidosis on PTH and 1,25-(OH)₂D₃ response to low calcium diet. Am J Physiol 1982; 243: F570–F575.

Kraut JA Gordon EM Ransom JC Horst R Slatopolsky E Coburn JW Effect of chronic metabolic acidosis on vitamin D metabolism in humans. Kidney Int 1983; 24: 644–8.

Krapf R Vetsch R Vetsch W Hulter HN . Chronic metabolic acidosis increases the serum concentration of 1,25-dihydroxyvitamin D in humans by stimulating its production rate. J Clin Invest 1992; 90: 2456–63.

Portal AA Morris RL . Pathogenesis of secondary hyperparathyroidism in chronic renal insufficiency. Miner Electrolyte Metab 1991; 17: 211–20.

Feinsfeld DA Sheiword LM . Parathyroid hormone and 1,25 (OH)₂ in chronic renal failure. Kidney Int 1988; 33: 1049–58.

Ritz E. Vitamin D metabolism in renal disease. J R Coll Phys 1992; 26: 394–9.

Swaminathan R. Disorders of metabolism. In: Davies TM , ed. Textbook of Adverse Drug Reactions, Chap 15, 4th edn. Oxford: Oxford Medical Publications, 1991.