Title : Gonadal steroid modulation of vasopressin secretion in response to osmotic stimulation.

Pub. Date : 1997 May

PMID : 9112409






4 Functional Relationships(s)
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1 Testosterone (3 ng/ml) and its metabolites, estradiol (50 pg/ml) and dihydrotestosterone (DHT; 3 ng/ml), inhibited osmotically stimulated VP release in hypothalamo-neurohypophyseal system explants. Estradiol arginine vasopressin Rattus norvegicus
2 The osmotically induced increase in VP mRNA content was also inhibited by testosterone and estradiol, but not by DHT. Estradiol arginine vasopressin Rattus norvegicus
3 BSA conjugates of estradiol (200 nM) and DHT (10 mM) also inhibited osmotically stimulated VP release, and VP mRNA content was inhibited by BSA-estradiol, but not by BSA-DHT, suggesting nongenomic actions of the steroids. Estradiol arginine vasopressin Rattus norvegicus
4 The differential effects of estradiol and DHT on VP mRNA imply distinct actions for these steroids, and the DHT mechanism uncouples regulation of VP release from VP mRNA content. Estradiol arginine vasopressin Rattus norvegicus