{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:13:39Z","timestamp":1787022819236,"version":"build-2736575974"},"reference-count":29,"publisher":"Bioscientifica","issue":"2","content-domain":{"domain":["joe.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2011,11]]},"abstract":"<jats:p>\n                    The cannabinoid CB1 receptor is a well-known player in energy homeostasis and its specific antagonism has been used in clinical practice for the treatment of obesity. The G protein-coupled receptor GPR55 has been recently proposed as a new cannabinoid receptor and, by contrast, its pharmacology is still enigmatic and its physiological role is largely unexplored, with no reports investigating its putative role in metabolism. Thus, we aim to investigate in rats the presence, distribution and putative physiological role of GPR55 in a key metabolic tissue, the endocrine pancreas. We found high\n                    <jats:italic>Gpr55<\/jats:italic>\n                    mRNA content in pancreatic islets and considerable protein distribution in insulin-secreting \u03b2-cells. Activation of GPR55 by the agonist O-1602 increased calcium transients (\n                    <jats:italic>P<\/jats:italic>\n                    &lt;0.01) and insulin secretion (\n                    <jats:italic>P<\/jats:italic>\n                    &lt;0.001) stimulated by glucose. This latter effect was blunted in\n                    <jats:italic>Gpr55<\/jats:italic>\n                    KO mice suggesting that O-1602 is acting, at least in part, through GPR55. Indeed, acute\n                    <jats:italic>in vivo<\/jats:italic>\n                    experiments showed that GPR55 activation increases glucose tolerance (\n                    <jats:italic>P<\/jats:italic>\n                    &lt;0.05) and plasma insulin levels (\n                    <jats:italic>P<\/jats:italic>\n                    &lt;0.05), suggesting an\n                    <jats:italic>in vivo<\/jats:italic>\n                    physiological relevance of GPR55 systemic stimulation. Taken together, these results reveal the expression of GPR55 receptors in the endocrine pancreas as well as its function at stimulus-secretion coupling of insulin secretion, suggesting a role in glucose homeostasis. In this context, it may also represent a new target for consideration in the management of type 2 diabetes and related diseases.\n                  <\/jats:p>","DOI":"10.1530\/joe-11-0166","type":"journal-article","created":{"date-parts":[[2011,9,1]],"date-time":"2011-09-01T20:25:24Z","timestamp":1314908724000},"page":"177-185","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-1","source":"Crossref","is-referenced-by-count":100,"title":["A role for the putative cannabinoid receptor GPR55 in the islets of Langerhans"],"prefix":"10.1530","volume":"211","author":[{"given":"Silvana 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