Renal handling of calcium and phosphate during mineralocorticoid administration in normal subjects. 1988

F P Cappuccio, and N D Markandu, and G A MacGregor
Department of Medicine, Charing Cross and Westminster Medical School, London, UK.

The renal handling of calcium and phosphate in relationship to the renal handling of sodium was studied in 7 healthy male volunteers under steady state metabolic conditions during prolonged (10 days) mineralocorticoid treatment. Calcium excretion was reduced together with sodium excretion during the early phase of mineralocorticoid treatment, whereas it increased independent of sodium excretion following the escape. Phosphate excretion did not change throughout. These results suggest that when there is extracellular volume expansion without increase in sodium intake and/or excretion, there is a dissociation of calcium and sodium excretion, suggesting that extracellular volume can affect the renal tubular handling of calcium probably as a result of mechanism(s) operating in the distal nephron.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D008297 Male Males
D008901 Mineralocorticoids A group of CORTICOSTEROIDS primarily associated with water and electrolyte balance. This is accomplished through the effect on ION TRANSPORT in renal tubules, resulting in retention of sodium and loss of potassium. Mineralocorticoid secretion is itself regulated by PLASMA VOLUME, serum potassium, and ANGIOTENSIN II. Mineralocorticoid,Mineralocorticoid Effect,Mineralocorticoid Effects,Effect, Mineralocorticoid,Effects, Mineralocorticoid
D009318 Natriuresis Sodium excretion by URINATION. Natriureses
D010710 Phosphates Inorganic salts of phosphoric acid. Inorganic Phosphate,Phosphates, Inorganic,Inorganic Phosphates,Orthophosphate,Phosphate,Phosphate, Inorganic
D002118 Calcium A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes. Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D005438 Fludrocortisone A synthetic mineralocorticoid with anti-inflammatory activity. 9-Fluorocortisol,9 alpha Fludrohydrocortisone,9 alpha-Fluoro-17-Hydroxycorticosterone,9 alpha-Fluorohydrocortisone,9-Fluoro-17-Hydroxycortisone,9-Fluorohydrocortisone,Astonin,Astonin Merck,Astonin-H,FCOL,9 Fluoro 17 Hydroxycortisone,9 Fluorocortisol,9 Fluorohydrocortisone,9 alpha Fluoro 17 Hydroxycorticosterone,9 alpha Fluorohydrocortisone,Astonin H,Merck, Astonin
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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