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- W1985486533 abstract "1. We have used quantitative receptor autoradiography to investigate the localization and characteristics of binding sites for 125Iodine-Bolton Hunter-labelled human neuropeptide Y ([125I]-BH-NPY) in porcine and human colon, and compared the binding characteristics with those found in porcine spleen. 2. Saturable, specific, high affinity [125I]-BH-NPY binding was localized to myenteric ganglia in porcine and human colons, and to submucosal ganglia in porcine colon. 3. Specific [125I]-BH-NPY binding to porcine myenteric ganglia was reversible in the presence of guanosine 5'-O-(3-thiotriphosphate) and was inhibited by related peptides with the rank order of potency; porcine NPY = human NPY = peptide tyrosine tyrosine (PYY) >> pancreatic polypeptide. 4. The Y2 selective analogue, NPY (13-36), competed for [125I]-BH-NPY binding to porcine myenteric ganglia with greater potency than the Y1 selective analogue, [Leu31, Pro34] NPY, the difference being small, but significant. 5. The characteristics of [125I]-BH-NPY binding to porcine myenteric ganglia were similar to those observed concurrently to porcine splenic red pulp. 6. The small difference in inhibitory potencies between NPY(13-36) and [Leu31, Pro34]NPY observed in this study in comparison with previous studies was not explained by differential ligand depletion during incubations, but may be due to differences in methodology between binding studies performed on tissue sections and on membranes. 7. We conclude that specific [25I]-BH-NPY binding sites are present in the myenteric and submucosal ganglia of the colon and that these sites may act as functional receptors by which NPY and PYY modulate colonic motility and electrolyte transport." @default.
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- W1985486533 date "1993-02-01" @default.
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- W1985486533 title "Localization and characterization of neuropeptide Y binding sites in porcine and human colon" @default.
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- W1985486533 doi "https://doi.org/10.1111/j.1476-5381.1993.tb12800.x" @default.
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