Atlas One · Host Biology · Scale 03 — Molecular

Vasopressin

9 aa cyclic neuropeptide from hypothalamic SON/PVN neurons. V2R on collecting duct → AQP2 → urine concentration; V1aR on vasculature → vasoconstriction. Deficiency causes diabetes insipidus; excess causes SIADH hyponatraemia.

Also known as: ADH, antidiuretic hormone, AVP, arginine vasopressin, argipressin

Scale 03 — MolecularScale
draftStatus
2026-06-05Last Reviewed
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vasopressin

Vasopressin

9 aa cyclic neuropeptide from hypothalamic SON/PVN neurons. V2R on collecting duct → AQP2 → urine concentration; V1aR on vasculature → vasoconstriction. Deficiency causes diabetes insipidus; excess causes SIADH hyponatraemia.