Urotensin II-related peptide | Peptide directory

Where it comes from

Acts at the shared receptor with much the same potency as urotensin II ²
More abundant than urotensin II in parts of the rodent brain and spinal cord, where it accounts for most of what older antibodies were detecting ¹
May favour different signals from the same receptor, which would explain why the two peptides do not always do the same thing ²

No medicine, no test and no human study. Palosuran, the one urotensin antagonist taken into patients, would have blocked it too ²
It cannot be told from urotensin II by the antibodies in common use, so a reported urotensin II level in brain tissue may be largely this peptide ¹

Its discovery was a correction rather than a find: the urotensin II signal in rat brain turned out to come mostly from a different peptide, made by a different gene ¹
Nothing is in trials and nothing is claimed for it. The useful open question is whether the two peptides have separate jobs, and answering it needs an animal lacking one and not the other ²
It is worth knowing it exists for one practical reason: a paper that measures urotensin II with an antibody is probably measuring both ¹

This card describes what a medicine is for and what the evidence says; it recommends nothing. Talk to your clinician about anything you read here.