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  • Title: Adrenotensin: an ADM gene product with the opposite effects of ADM.
    Author: Gumusel B, Chang JK, Hyman A, Lippton H.
    Journal: Life Sci; 1995; 57(8):PL87-90. PubMed ID: 7637545.
    Abstract:
    The purpose of the present study was to investigate the effects of putative products of the ADM gene, other than ADM including, prodepin, proADM45-92 and proADM153-185 on cat pulmonary arterial (PA) rings with or without precontraction with U46619. Addition of proADM153-185 (3 x 10(-10)-10(-6) M) increased tension in a concentration-dependent manner in cat PA rings without precontraction. When vessels were precontracted with U46619, ADM(3 x 10(-10)-10(-6) M) produced a concentration-dependent vasorelaxant response, whereas proADM153-185 produced a weak concentration-dependent contractile response. Prodepin and proADM45-92 up to 10(-6)M had no activity on PA rings. Since proADM153-185, similar to ADM, would be expected to be released in free form following endopeptidase-induced cleavage, the present data suggest proADM undergoes proteolytic processing to release peptides with divergent vascular effects. Thus, the present data also suggest that proADM153-185 may represent a novel product of the ADM gene and term this putative new substance "adrenotensin".
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