Cortisol rapidly suppresses intracellular calcium and voltage-gated calcium channel activity in prolactin cells of the tilapia (Oreochromis mossambicus)
Hyde, G. N., Seale, A. P., Grau, E. G., & Borski, R. J. (2004, March 9). American Journal of Physiology-Endocrinology and Metabolism, Vol. 286, pp. E626–E633.
By:
G. Hyde n, A. Seale, E. Grau & R. Borski*
author keywords: BAY K 8644; nongenomic actions; glucocorticoids; osmoregulation; nifedipine; L-type voltage-gated ion channels; teleost
MeSH headings : 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester / antagonists & inhibitors; 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester / pharmacology; Animals; Anti-Inflammatory Agents / pharmacology; Calcium / metabolism; Calcium Channel Agonists / pharmacology; Calcium Channel Blockers; Calcium Channels, L-Type / drug effects; Calcium Radioisotopes; Cyclic AMP / metabolism; Electrophoresis, Polyacrylamide Gel; Fura-2; Hormone Antagonists / pharmacology; Hydrocortisone / pharmacology; In Vitro Techniques; Ion Channel Gating / drug effects; Ion Channel Gating / physiology; Male; Osmotic Pressure; Pituitary Gland, Anterior / cytology; Pituitary Gland, Anterior / drug effects; Pituitary Gland, Anterior / metabolism; Prolactin / physiology; Somatostatin / pharmacology; Tilapia / physiology
topics (OpenAlex): Hypothalamic control of reproductive hormones; Growth Hormone and Insulin-like Growth Factors; Regulation of Appetite and Obesity
TL;DR:
Results indicate that cortisol inhibits tilapia PRL release through rapid reductions in Ca(i)(2+) that likely involve an attenuation of Ca( 2+) entry through L-type voltage-gated Ca(2+) channels.
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