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World J Diabetes. May 15, 2026; 17(5): 118754
Published online May 15, 2026. doi: 10.4239/wjd.v17.i5.118754
Figure 1
Figure 1 Mechanisms of macrophage-driven β-cell impairment in obesity/T2DM islets. Activated macrophages release interleukin-1 β (inducible nitric oxide synthase/nitric oxide axis), galectin-3 (Ca2+ dysregulation), prostaglandin E2 (cyclic adenosine monophosphate reduction), and exosomal miR-212-5p (sirtuin 2 suppression), and form tunneling nanotubes to deplete insulin granules, collectively impairing Glucose-stimulated insulin secretion and β-cell viability. (by figdraw.com). IL-1β: Interleukin-1β; iNOS: Inducible nitric oxide synthase; NO: Nitric oxide; Gal3: Galectin-3; PGE2: Prostaglandin E2; SIRT2: Sirtuin 2; GSIS: Glucose-stimulated insulin secretion.


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