vasotocin

vasotocin
A nonapeptide hormone of the neurohypophysis of subvertebrates, with activities similar to that of vasopressin and oxytocin; chemically identical with human vasopressin except for an isoleucyl residue at position 3; thus [3-isoleucine]vasopressin or [Ile3]vasopressin. [vaso, pressin + oxytocin]
- arginine v. v. with arginyl residue at position 8 (identical with arginine oxytocin). SEE ALSO: arginine vasopressin.

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va·so·to·cin .vā-zə-'tōs-ən n a polypeptide pituitary hormone of most lower vertebrates that is held to have an antidiuretic function

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vaso·to·cin (va″zo-) (vas″o-toґsin) a nonapeptide hormone having some properties similar to those of vasopressin and oxytocin, produced in the supraoptico-neurohypophysial unit of birds, reptiles, amphibians, and fishes. It is found in the pituitary gland and hypothalamus of the human fetus but amounts in humans after birth are minute to indetectable.

Medical dictionary. 2011.

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  • vasotocin — noun Etymology: vaso + oxytocin Date: circa 1963 a polypeptide pituitary hormone of most vertebrates below mammals that has properties similar to oxytocin and vasopressin …   New Collegiate Dictionary

  • vasotocin — Cyclic nonapeptide, related to vasopressin but found in birds, reptiles and some amphibians …   Dictionary of molecular biology

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  • Vasopressin — Arginine vasopressin Space filling model of arginine vasopressin …   Wikipedia

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  • endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

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