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  • Title: Effect of islet amyloid polypeptide (IAPP/amylin) on 2-deoxyglucose uptake in mouse pancreatic acini.
    Author: Iwamoto Y, Takahashi Y, Sakuma N, Shiraishi I, Inooka G, Kumakura S, Awata T, Kuzuya T.
    Journal: Diabetes Res Clin Pract; 1992 Jan; 15(1):71-5. PubMed ID: 1541238.
    Abstract:
    In order to examine the effect of islet amyloid polypeptide (IAPP/amylin), a product of the pancreatic beta cell and a major component of islet amyloid deposits, on exocrine pancreatic function, we studied the effect of rat IAPP amide (IAPP-NH2) on 2-deoxy-D-glucose (2-DG) uptake in isolated mouse pancreatic acini. Mouse pancreatic acini were preincubated for 80 min with various concentrations of IAPP-NH2 (1 nM-1 microM) and [3H]2-DG uptake for 20 min was measured. The full effect of IAPP-NH2 on this function was not immediate but increased linearly with time for up to 80 min of incubation. IAPP-NH2 caused a dose-dependent stimulation of 2-DG uptake by mouse acini; a detectable effect at 10 nM and a maximal effect at 1 microM. In the presence of 1 microM IAPP-NH2, 2-DG uptake increased by 69 +/- 8% above basal (mean +/- SD, n = 6). The results indicate that IAPP-NH2 stimulates glucose uptake in mouse pancreatic acini, and raise the possibility that IAPP-NH2 plays some physiological role in the insuloacinar axis in mouse pancreas.
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