{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T19:51:31Z","timestamp":1791402691104,"version":"4.3.3"},"reference-count":51,"publisher":"American Diabetes Association","issue":"5","license":[{"start":{"date-parts":[[2021,9,8]],"date-time":"2021-09-08T00:00:00Z","timestamp":1631059200000},"content-version":"vor","delay-in-days":3067,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0\/"}],"content-domain":{"domain":["diabetesjournals.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,5,1]]},"abstract":"<jats:p>The normal \u03b2-cell response to obesity-associated insulin resistance is hypersecretion of insulin. Type 2 diabetes develops in subjects with \u03b2-cells that are susceptible to failure. Here, we investigated the time-dependent gene expression changes in islets of diabetes-prone db\/db and diabetes-resistant ob\/ob mice. The expressions of adaptive unfolded protein response (UPR) genes were progressively induced in islets of ob\/ob mice, whereas they declined in diabetic db\/db mice. Genes important for \u03b2-cell function and maintenance of the islet phenotype were reduced with time in db\/db mice, whereas they were preserved in ob\/ob mice. Inflammation and antioxidant genes displayed time-dependent upregulation in db\/db islets but were unchanged in ob\/ob islets. Treatment of db\/db mouse islets with the chemical chaperone 4-phenylbutyric acid partially restored the changes in several \u03b2-cell function genes and transcription factors but did not affect inflammation or antioxidant gene expression. These data suggest that the maintenance (or suppression) of the adaptive UPR is associated with \u03b2-cell compensation (or failure) in obese mice. Inflammation, oxidative stress, and a progressive loss of \u03b2-cell differentiation accompany diabetes progression. The ability to maintain the adaptive UPR in islets may protect against the gene expression changes that underlie diabetes development in obese mice.<\/jats:p>","DOI":"10.2337\/db12-0701","type":"journal-article","created":{"date-parts":[[2012,12,29]],"date-time":"2012-12-29T07:20:11Z","timestamp":1356765611000},"page":"1557-1568","update-policy":"https:\/\/doi.org\/10.2337\/ada-journal-policies","source":"Crossref","is-referenced-by-count":129,"title":["Failure of the Adaptive Unfolded Protein Response in Islets of Obese Mice Is Linked With Abnormalities in \u03b2-Cell Gene Expression and Progression to Diabetes"],"prefix":"10.2337","volume":"62","author":[{"given":"Jeng Yie","family":"Chan","sequence":"first","affiliation":[{"name":"Diabetes and Obesity Research Program, Garvan Institute of Medical Research, St. Vincent's Hospital, Sydney, New South Wales, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jude","family":"Luzuriaga","sequence":"additional","affiliation":[{"name":"Diabetes and Obesity Research Program, Garvan Institute of Medical Research, St. Vincent's Hospital, Sydney, New South Wales, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed","family":"Bensellam","sequence":"additional","affiliation":[{"name":"Diabetes and Obesity Research Program, Garvan Institute of Medical Research, St. Vincent's Hospital, Sydney, New South Wales, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trevor J.","family":"Biden","sequence":"additional","affiliation":[{"name":"Diabetes and Obesity Research Program, Garvan Institute of Medical Research, St. Vincent's Hospital, Sydney, New South Wales, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. 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