Intravenous immunoglobulin improves glucose control and β-cell function in human IAPP transgenic mice by attenuating islet inflammation and reducing IAPP oligomers

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Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by β-cell loss, insulin resistance, islet inflammation and amyloid deposits derived from islet amyloid polypeptide (IAPP). Reducing toxic IAPP oligomers and inhibiting islet inflammation may provide therapeutic benefit in treating T2DM. Intravenous immunoglobulin (IVIg) is an efficient anti-inflammatory and immunomodulatory agent for the treatment of several autoimmune or inflammatory neurological diseases. However, whether IVIg has therapeutic potential on T2DM remains unclear. In present study, we showed that IVIg treatment significantly improved glucose control and insulin sensitivity, and prevented β-cell apoptosis by lowering toxic IAPP oligomer levels, attenuating islet inflammation and activating autophagy in human IAPP transgenic mouse model. These results suggest that IVIg is a promising therapeutic potential for T2DM treatment.

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