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  • Title: Relaxation of isolated gastric smooth muscle cells by vasoactive intestinal peptide.
    Author: Bitar KN, Makhlouf GM.
    Journal: Science; 1982 Apr 30; 216(4545):531-3. PubMed ID: 6176025.
    Abstract:
    Vasoactive intestinal peptide caused a prompt, dose-dependent relaxation of isolated gastric smooth muscle cells of the guinea pig and a significant increase in intracellular adenosine 3',5'-monophosphate coincidentally with optimum relaxation. Relaxation was augmented by a threshold concentration of isobutyl methylxanthine. The direct relaxant effect of vasoactive intestinal peptide and the distribution of nerves containing this peptide to circular smooth muscle support the view that vasoactive intestinal peptide is the neuromuscular transmitter of enteric inhibitory nerves.
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