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    Diabetes. 2004 Dec;53 Suppl 3:S75-8.

    Liver X receptor activation stimulates insulin secretion via modulation of glucose and lipid metabolism in pancreatic beta-cells.

    Efanov AM, Sewing S, Bokvist K, Gromada J.

    Lilly Research Laboratories, Essener Strasse 93, D-22419 Hamburg, Germany. efanov_alexander@lilly.com

    Liver X receptors (LXRs) alpha and beta, transcription factors of a nuclear hormone receptor family, are expressed in pancreatic islets as well as glucagon-secreting and insulin-secreting cell lines. Culture of pancreatic islets or insulin-secreting MIN6 cells with a LXR specific agonist T0901317 caused an increase in glucose-dependent insulin secretion and islet insulin content. The stimulatory effect of T0901317 on insulin secretion was observed only after >72 h of islet culture with the compound. In MIN6 cells, T0901317 increased protein expression of lipogenic enzymes, fatty acid synthase, and acetyl-CoA carboxylase. LXR activation also produced an increase in glucokinase protein and pyruvate carboxylase (PC) activity levels. The PC inhibitor phenylacetic acid abolished the increase in insulin secretion in cells treated with T0901317. The results suggest that LXRs can control insulin secretion and biosynthesis via regulation of glucose and lipid metabolism in pancreatic beta-cells.

    PMID: 15561926 [PubMed - indexed for MEDLINE]

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    • Glucagon (GlucaGen Diagnostic Kit®)

      Glucagon is a hormone produced in the pancreas. Glucagon is used to raise very low blood sugar. Glucagon is also used in diagnostic testing of the stomach and other digestive organs.