Adrenomedullin (1-12), human

Adrenomedullin (AM) (1-12), human (C₆₄H₁₀₀N₂₂O₁₉S₁), is a peptide with the sequence Tyr-Arg-Gln-Ser-Met-Asn-Asn-Phe-Gln-Gly-Leu-Arg. It was first discovered to be associated with pheochromocytoma, a tumor arising from adrenal medulla, in 1993. AM was initially identified as a vasodilator, and as such, it has the ability to relax vascular tone. Previous research cited it as the most potent endogenous vasodilatory peptide found in the body. Other effects of AM include the increase of cell tolerance to oxidative stress and hypoxic injury and angiogenesis. AM is seen as a positive influence in diseases such as hypertension, myocardial infarction, chronic obstructive pulmonary disease and other cardiovascular conditions.