{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T22:54:21Z","timestamp":1792709661917,"version":"4.5.0"},"reference-count":53,"publisher":"Bioscientifica","issue":"2","license":[{"start":{"date-parts":[[2014,11,1]],"date-time":"2014-11-01T00:00:00Z","timestamp":1414800000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/deed.en_GB"}],"content-domain":{"domain":["joe.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2014,11]]},"abstract":"<jats:p>\n                    Resveratrol (RES) and curcumin (CUR) are polyphenols that are found in fruits and turmeric, and possess medicinal properties that are beneficial in various diseases, such as heart disease, cancer, and type 2 diabetes mellitus (T2DM). Results from recent studies have indicated that their therapeutic properties can be attributed to their anti-inflammatory effects. Owing to reports stating that they protect against \u03b2-cell dysfunction, we studied their mechanism(s) of action in \u03b2-cells. In T2DM, cAMP plays a critical role in glucose- and incretin-stimulated insulin secretion as well as overall pancreatic \u03b2-cell health. A potential therapeutic target in the management of T2DM lies in regulating the activity of phosphodiesterases (PDEs), which degrade cAMP. Both RES and CUR have been reported to act as PDE inhibitors in various cell types, but it remains unknown if they do so in pancreatic \u03b2-cells. In our current study, we found that both RES (0.1\u201310\u200a\u03bcmol\/l) and CUR (1\u2013100\u200apmol\/l)-regulated insulin secretion under glucose-stimulated conditions. Additionally, treating \u03b2-cell lines and human islets with these polyphenols led to increased intracellular cAMP levels in a manner similar to 3-isobutyl-1-methylxanthine, a classic PDE inhibitor. When we investigated the effects of RES and CUR on PDEs, we found that treatment significantly downregulated the mRNA expression of most of the 11 PDE isozymes, including\n                    <jats:italic>PDE3B<\/jats:italic>\n                    ,\n                    <jats:italic>PDE8A<\/jats:italic>\n                    , and\n                    <jats:italic>PDE10A<\/jats:italic>\n                    , which have been linked previously to regulation of insulin secretion in islets. Furthermore, RES and CUR inhibited PDE activity in a dose-dependent manner in \u03b2-cell lines and human islets. Collectively, we demonstrate a novel role for natural-occurring polyphenols as PDE inhibitors that enhance pancreatic \u03b2-cell function.\n                  <\/jats:p>","DOI":"10.1530\/joe-14-0335","type":"journal-article","created":{"date-parts":[[2014,10,9]],"date-time":"2014-10-09T02:05:53Z","timestamp":1412820353000},"page":"107-117","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-1","source":"Crossref","is-referenced-by-count":116,"title":["Resveratrol and curcumin enhance pancreatic \u03b2-cell function by inhibiting phosphodiesterase activity"],"prefix":"10.1530","volume":"223","author":[{"given":"Michael","family":"Rouse","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antoine","family":"Youn\u00e8s","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Josephine 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