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- W2075318923 abstract "The actions of neuropeptide Y (NPY) are mediated by at least six G-protein coupled receptors denoted as Y(1), Y(2), Y(3), Y(4), Y(5), and y(6). Investigations using receptor selective ligands and receptor knock-out mice suggest that NPY effects on feeding are mediated by both Y(1) and Y(5) receptors. We have previously shown that Cys-dimers of NPY C-terminal peptides exhibit Y(1) selectivity relative to Y(2) receptors. Re-investigation of their selectivity with respect to the newly cloned receptors, has identified bis(31/31') [[Cys(31), Nva(34)]NPY(27-36)-NH(2)] (BWX-46) as a Y(5) receptor selective agonist. BWX-46 selectively bound Y(5) receptors, and inhibited cAMP synthesis by Y(5) cells with potencies comparable to that of NPY. Moreover, BWX-46 (10 microM) exhibited no significant effect on the cAMP synthesis by Y(1), Y(2), and Y(4) cells. Thus, BWX-46 constitutes the lowest molecular weight Y(5) selective agonist reported to date. Intrahypothalamic (i.h.t)-injection of 30 and 40 microg of BWX-46 stimulated the food intake by rats in a gradual manner, reaching maximal level 8 h after injection. This response was similar to that exhibited by other Y(5) selective agonists, but differed from that of NPY, which exhibited a rapid orexigenic stimulus within 1 h. It is suggested that the differences in the orexigenic stimuli of NPY and Y(5) agonists may be due to their differences in the signal transduction mechanisms." @default.
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- W2075318923 date "2002-08-01" @default.
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- W2075318923 title "Bis(31/31′){[Cys31, Nva34]NPY(27–36)-NH2}: a neuropeptide Y (NPY) Y5 receptor selective agonist with a latent stimulatory effect on food intake in rats" @default.
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- W2075318923 doi "https://doi.org/10.1016/s0196-9781(02)00086-4" @default.
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