{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,11]],"date-time":"2026-11-11T23:29:05Z","timestamp":1794439745718,"version":"4.9.1"},"reference-count":58,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2012,4,10]],"date-time":"2012-04-10T00:00:00Z","timestamp":1334016000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["bpspubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["British J Pharmacology"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:p><jats:bold>BACKGROUND AND PURPOSE<\/jats:bold>Amylin (Amy) is an important glucoregulatory peptide and AMY receptors are clinical targets for diabetes and obesity. Human (h) AMY receptor subtypes are complexes of the calcitonin (CT) receptor with receptor activity\u2010modifying proteins (RAMPs); their rodent counterparts have not been characterized. To allow identification of the most clinically relevant receptor subtype, the elucidation of rat (r) AMY receptor pharmacology is necessary.<\/jats:p><jats:p><jats:bold>EXPERIMENTAL APPROACH<\/jats:bold>Receptors were transiently transfected into COS\u20107 cells and cAMP responses measured in response to different agonists, with or without antagonists. Competition binding experiments were performed to determine rAmy affinity.<\/jats:p><jats:p><jats:bold>KEY RESULTS<\/jats:bold>rCT was the most potent agonist of rCT<jats:sub>(a)<\/jats:sub>receptors, whereas rAmy was most potent at rAMY<jats:sub>1(a)<\/jats:sub>and rAMY<jats:sub>3(a)<\/jats:sub>receptors. rAmy bound to these receptors with high affinity. Rat \u03b1\u2010calcitonin gene\u2010related peptide (CGRP) was equipotent to rAmy at both AMY receptors. Rat adrenomedullin (AM) and rAM2\/intermedin activated all three receptors but were most effective at rAMY<jats:sub>3(a)<\/jats:sub>. AC187, AC413 and sCT<jats:sub>8\u201032<\/jats:sub>were potent antagonists at all three receptors. r\u03b1CGRP<jats:sub>8\u201037<\/jats:sub>displayed selectivity for rAMY receptors over rCT<jats:sub>(a)<\/jats:sub>receptors. rAMY<jats:sub>8\u201037<\/jats:sub>was a weak antagonist but was more effective at rAMY<jats:sub>1(a)<\/jats:sub>than rAMY<jats:sub>3(a)<\/jats:sub>.<\/jats:p><jats:p><jats:bold>CONCLUSIONS AND IMPLICATIONS<\/jats:bold>AMY receptors were generated by co\u2010expression of rCT<jats:sub>(a)<\/jats:sub>with rRAMP1 or 3, forming rAMY<jats:sub>1(a)<\/jats:sub>and rAMY<jats:sub>3(a)<\/jats:sub>receptors, respectively. CGRP was more potent at rAMY than at hAMY receptors. No antagonist tested was able to differentiate the rAMY receptor subtypes. The data emphasize the need for and provide a useful resource for developing new CT or AMY receptor ligands as pharmacological tools or potential clinical candidates.<\/jats:p><jats:p><jats:bold>LINKED ARTICLES<\/jats:bold>This article is part of a themed section on Secretin Family (Class B) G Protein\u2010Coupled Receptors. To view the other articles in this section visit<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"http:\/\/dx.doi.org\/10.1111\/bph.2012.166.issue-1\">http:\/\/dx.doi.org\/10.1111\/bph.2012.166.issue\u20101<\/jats:ext-link><\/jats:p>","DOI":"10.1111\/j.1476-5381.2011.01717.x","type":"journal-article","created":{"date-parts":[[2011,10,21]],"date-time":"2011-10-21T11:58:54Z","timestamp":1319198334000},"page":"151-167","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":95,"title":["Pharmacological characterization of rat amylin receptors: implications for the identification of amylin receptor 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