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  • Title: [Adrenomedullin and related peptides].
    Author: Kitamura K.
    Journal: Nihon Yakurigaku Zasshi; 1998 Sep; 112(3):137-46. PubMed ID: 9793067.
    Abstract:
    "Adrenomedullin (AM)" is a novel hypotensive peptide discovered in human pheochromocytoma by monitoring the elevating activity of platelet cAMP. It has potent and long-lasting vasodilator effects in several vascular systems. In addition, a novel 20-residue hypotensive peptide, termed "proadrenomedullin N-terminal 20 peptide" (PAMP), is processed from proadrenomedullin. Although initially isolated from human pheochromocytoma tissue and porcine adrenal medullae, AM mRNA is highly expressed in several organs including cardiovascular tissues. Taken together with its widespread distribution and its ability to influence the bioactivity of cells in situ, AM may function as a paracrine or autocrine hormone rather than a classical endocrine system. Furthermore, ubiquitous expression of AM mRNA may indicate its various biological functions as well as the existence of a novel circulation control system. Plasma AM as well as PAMP concentrations significantly increased in various cardiovascular diseases including hypertension, chronic renal failure and cognestive heart failure. The present review summarizes the recent advances in AM research and showed that AM and PAMP are important vasoactive peptides, such investigations should enable the elucidation of the basic physiologic mechanisms of novel circulatory homeostasis.
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