(redirected from Arginine vasopressin)
Also found in: Dictionary, Thesaurus, Medical, Acronyms.


(văz'ōprĕs`ĭn): see antidiuretic hormoneantidiuretic hormone
, polypeptide hormone secreted by the posterior pituitary gland. Its principal action is to regulate the amount of water excreted by the kidneys. Antidiuretic hormone (ADH), known also as vasopressin, causes the kidneys to resorb water directly from the
..... Click the link for more information.



a hormone secreted by the posterior lobe of the hypophysis; causes constriction of vessels (acting on the smooth muscles of their walls) and increased blood pressure (pressor effect); also maintains at a proper level the reverse absorption of water in the straight tubules of the kidneys, that is, decreases the quantity of urine discharged (antidiuretic effect). Vasopressin is formed in the neurosecretory cells of the anterior nuclei of the hypothalmus, from which it enters the hypophysis along the nerve fibers. The antidiuretic action of the hormone is one of the factors that maintain the relative constancy of the water-salt metabolism in the bodies of vertebrate animals and man. A deficiency of vasopressin may lead to diabetes insipidus, in which discharge of urine is sharply increased. Vasopressin is contained in preparations obtained from the posterior hypophysis—Pituitrin and adiurekrin. Chemically, vasopressin is an octapeptide constructed of eight amino acids (in the majority of animals and in humans vasopressin consists of cysteine, tyrosine, phenylalanine, glutamine, asparagin, proline, arginine, and glycine; in pigs lysine is found instead of arginine). In structure and effect vasopressin is similar to another hormone of the hypophysis—oxytocin.



A peptide hormone which is elaborated by the posterior pituitary and which has a pressor effect; used medicinally as an antidiuretic. Also known as antidiuretic hormone (ADH).
References in periodicals archive ?
TABLE 1 Haemodynamic variables at baseline and during arginine vasopressin (A VP) infusion (n=12 animals).
Exertional hyponatremia is associated with inappropriate secretion of arginine vasopressin.
Correlation of cigarette-induced increase in serum nicotine levels with arginine vasopressin concentrations in the syndrome of self-induced water intoxication and psychosis (SIWIP).
Oxytocin pretreatment enhances arginine vasopressin induced motor disturbances and arginine-induced phosphoinositol hydrolysis in rat septum: A cross sensitization phenomenon.
Systemic and renal macro-and microcirculatory responses to arginine vasopressin in endotoxic rabbits.
Key Words: arginine vasopressin, copeptin, plasma concentrations, sepsis, septic shock
Arginine vasopressin (AVP) receptor antagonist now available in new premixed formulation
Patients with heart failure often have abnormally high levels of arginine vasopressin, which promotes water reabsorption and helps produce the edema that often accompanies heart failure.
74) in Arginine Vasopressin (AVP) a hormone believed to play a role in aggressive behavior and linked to helping cause increases in the stress hormone cortisol.
Arginine vasopressin (AVP) receptor antagonist now approved in single-use premixed formulation
Arginine vasopressin (AVP), also termed antidiuretic hormone, is a nonapeptide produced in the hypothalamus.
Conivaptan is a nonpeptide arginine vasopressin (AVP) receptor antagonist that blocks both V1a and V2 vasopressin receptors, resulting in increased urine output without increased sodium loss.

Full browser ?