alexa Insulin resistance and neurodegeneration: roles of obesity, type 2 diabetes mellitus and non-alcoholic steatohepatitis.


Journal of Alzheimers Disease & Parkinsonism

Author(s): de la Monte SM, Longato L, Tong M, Wands JR

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Abstract Recent studies have linked obesity, type 2 diabetes mellitus (T2DM) or non-alcoholic steatohepatitis (NASH) to insulin resistance in the brain, cognitive impairment and neurodegeneration. Insulin resistance compromises cell survival, metabolism and neuronal plasticity, and increases oxidative stress, cytokine activation and apoptosis. T2DM/NASH has been demonstrated to be associated with increased ceramide generation, suggesting a mechanistic link between peripheral insulin resistance and neurodegeneration because ceramides mediate insulin resistance and can cross the blood-brain barrier (BBB). Peripheral insulin resistance diseases may potentially cause brain insulin resistance via a liver-brain axis of neurodegeneration as a result of the trafficking of ceramides across the BBB. Therapy that includes insulin-sensitizing agents may help prevent brain insulin resistance-mediated cognitive impairment.
This article was published in Curr Opin Investig Drugs and referenced in Journal of Alzheimers Disease & Parkinsonism

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