vasopressin /vaso·pres·sin/ (-pres´in) a hormone secreted by cells of the hypothalamic nuclei and stored in the posterior pituitary for release as necessary; it constricts blood vessels, raising the blood pressure, and increases peristalsis, exerts some influence on the uterus, and influences resorption of water by the kidney tubules, resulting in concentration of urine. In most mammals, including humans, it exists as the arginine form, a synthetic preparation of which is used as an antidiuretic and in tests of hypothalamo-neurohypophysial-renal function in the diagnosis of central diabetes insipidus. A lysine form occurs in pigs; the synthetic pharmaceutical preparation is lypressin.
Antidiuretic hormone (vasopressin)
vasopressin.
vasopressin [vas″o-pres´in]
va·so·pres·sin (v  z -pr s  n)n. Abbr. VP A hormone, related to oxytocin, that is secreted by the posterior lobe of the pituitary gland, constricts blood vessels, raises blood pressure, stimulates intestinal motility, and reduces the excretion of urine. Also called antidiuretic hormone. |
Antidiuretic hormone (vasopressin)
A hormone that acts on the kidneys to regulate water balance.
Mentioned in: Pituitary Dwarfism
vasopressin.
See antidiuretic hormone.
vasopressin [vas″o-pres´in]
a hormone secreted by cells of the hypothalamic nuclei and stored in the posterior pituitary for release as necessary; it stimulates contraction of the muscular tissues of the capillaries and arterioles, raising the blood pressure, and increases peristalsis, exerts some influence on the uterus, and influences resorption of water by the kidney tubules, resulting in concentration of urine. Its rate of secretion is regulated chiefly by the osmolarity of the plasma. Also prepared synthetically or obtained from the posterior pituitary of domestic animals; used as an antidiuretic. Called also antidiuretic hormone.
Vasopressin (ADH) regulation. ADH is secreted by the posterior pituitary gland primarily in response to an increase in plasma osmolality. From Malarkey and McMorrow, 2000.
arginine vasopressin vasopressin containing arginine, as that from humans and most other mammals; for medicinal uses, see vasopressin. Called also argipressin.
lysine vasopressin the antidiuretic hormone of the pig family, differing from arginine vasopressin in having lysine instead of arginine at position 8. A synthetic preparation, lypressin, is used as an antidiuretic and vasoconstrictor.
vasopressin (vā´zōpres´in),
n See hormone, antidiuretic.
vasopressin
a hormone secreted by cells of the hypothalamic nuclei and stored in the posterior pituitary for release as necessary; it stimulates contraction of the muscular tissues of the capillaries and arterioles, raising the blood pressure, and increases peristalsis, exerts some influence on the uterus, and influences resorption of water by the kidney tubules, resulting in concentration of urine. Its rate of secretion is regulated chiefly by the osmolarity of the plasma. Also prepared synthetically or obtained from the posterior pituitary of domestic animals; used as an antidiuretic. Called also antidiuretic hormone (ADH).
vasopressin test
see antidiuretic hormone response test.
vasopressin
Antidiuretic hormone, see there
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