The effect of adrenergic blocking and stimulating agents on arginine vasotocin release in birds

The effect of adrenergic blocking and stimulating agents on arginine vasotocin (AVT) release from the neurohpophysis following osmotic stimuli was studied in hens. It was found that alpha - adrenergic blocking drug - regitine inhibits the release of AVT after the intravenous injection of hypertonic solution of NaCl. The alpha - adrenergic stimulating drug - vasoxine as well as beta - adrenergic blocking drug - propranolol and beta - stimulating drug isoprenalinsulphate had no effect on the release of AVT.