Argipressin

Definition 1

A synthetic peptide identical to the endogenous nonapeptide hormone with antidiuretic property. Synthesized in the hypothalamus and stored/released from the posterior lobe of the pituitary, argipressin's primary function is regulating extracellular fluid volume. This agent can also act as a vasoconstrictor, increasing blood pressure and systemic vascular resistance. (NCI Thesaurus)

Definition 2

Octapeptide antidiuretic hormones released by the neurohypophysis of all vertebrates (chemical composition varies with species). They control water metabolism and balance by regulating lung, gill, kidney, etc., and water loss, and also contract smooth muscle. They may also be neurotransmitters. Also included are synthetic vasopressin derivatives. Vasopressins are used pharmacologically as renal agents, vasoconstrictor agents, and hemostatics. (NLM, Medical Subject Headings)

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