Hallmarks of Brain Aging: Adaptive and Pathological Modification by Metabolic States

Publication date: 5 June 2018
Source:Cell Metabolism, Volume 27, Issue 6
Author(s): Mark P. Mattson, Thiruma V. Arumugam
During aging, the cellular milieu of the brain exhibits tell-tale signs of compromised bioenergetics, impaired adaptive neuroplasticity and resilience, aberrant neuronal network activity, dysregulation of neuronal Ca²⁺ homeostasis, the accrual of oxidatively modified molecules and organelles, and inflammation. These alterations render the aging brain vulnerable to Alzheimer's and Parkinson's diseases and stroke. Emerging findings are revealing mechanisms by which sedentary overindulgent lifestyles accelerate brain aging, whereas lifestyles that include intermittent bioenergetic challenges (exercise, fasting, and intellectual challenges) foster healthy brain aging. Here we provide an overview of the cellular and molecular biology of brain aging, how those processes interface with disease-specific neurodegenerative pathways, and how metabolic states influence brain health.

Teaser

Mattson and Arumugam provide a comprehensive view of the cellular and molecular biology of brain aging and discuss how metabolic states influence brain health, including susceptibility to Alzheimer's and Parkinson's diseases and stroke. They consider how the sedentary lifestyle accelerates brain aging and discuss the potential for intermittent metabolic switching to counteract the process.


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