Calcitonin stimulation of urine flow and sodium excretion in the starling
- 1 May 1980
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Regulatory, Integrative and Comparative Physiology
- Vol. 238 (5), R406-R412
- https://doi.org/10.1152/ajpregu.1980.238.5.r406
Abstract
Renal effects of synthetic salmon calcitonin (CT) were examined in normal and parathyroidectomized (PTX) starlings. Standard clearance studies were performed. Anesthetized birds were infused with [14C]-inulin in 2.5% mannitol containing either 0.25% gelatin alone as a control, or gelatin plus CT (2 IU CT/h). In intact starlings, CT significantly increased urine flow and relative clearance of Na (CNa/CIn). CCa/CIn was significantly elevated only 40 min after start of hormone infusion. No significant change occurred in CK/CIn, CPO4/CIN or in serum levels of Na, K, Ca or PO4. In PTX starlings, CT induced significantly higher CNa/CIn. Urine flow was significantly higher at 40 and 60 min, whereas CK/CIn increased significantly only 20 min following start of CT infusion. Serum Ca decreased significantly 1 h after hormone administration and was accompanied by increased incidence of tetany. Serum PO4 levels were significantly lower than those of corresponding PTX controls 1 h post-CT, indicating that CT prevented the expected hyperphosphatemia. Higher CT dose (20 IU/h) in PTX birds substantially enhanced urine flow, CNa/CIn, CK/CIn, and occurrence of tetany.This publication has 3 references indexed in Scilit:
- Effect of eel calcitonin on serum electrolytes in the eel Anguilla japonicaGeneral and Comparative Endocrinology, 1978
- Parathyroid hormone and renal excretion of phosphate and calcium in normal starlingsAmerican Journal of Physiology-Legacy Content, 1976
- A transient increase in renal clearance of phosphate in response to continuous infusion of salmon calcitonin in rats.Endocrinologia Japonica, 1976