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Journal of Clinical Endocrinology & Metabolism, Vol 53, 153-157, Copyright © 1981 by Endocrine Society

ARTICLES

Effect of secretin on parathyroid hormone and calcitonin secretion

R Sethi, SC Kukreja, EN Bowser, GK Hargis and GA Williams

The effect of secretin on secretion of parathyroid hormone (PTH) and calcitonin (CT) was evaluated by both in vitro and in vivo techniques. In in vitro studies with bovine parathyroid tissue, Secretin-Boots caused significant dose-related increases in PTH secretion. In in vitro studies with rat thyroparathyroid tissue, Secretin-Boots caused significant increases in both PTH and CT secretion. Infusion of Secretin-Boots or of synthetic secretin in biologically equivalent doses into rats caused similar increases in secretion of PTH and of CT. Infusion of multiple doses of synthetic secretin revealed a dose- related stimulation of both PTH and CT secretion. Infusion of Secretin- Boots into normal human subjects caused prompt and progressive significant increases in secretion of both PTH and CT, with return to baseline values within 90 min after termination of the infusion. These data suggest that secretin can stimulate hormonal secretion by parathyroid and thyroid C cells and that secretin may play a modulating role in the secretion of both PTH and CT.




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Copyright © 1981 by The Endocrine Society