Neuroprotective effects of dietary restriction: Evidence and mechanisms

Seminars in Cell & Developmental Biology
Giovambattista Pani

Abstract

Dietary restriction (DR, in the form of reduced calorie intake or alternate fasting with overall normal energy supply) elicits cell protective responses in nearly all tissues and organs including brain, and extends lifespan in a fashion that is conserved from the simplest model organisms to mammals and non-human primates. Importantly, studies on DR promise to reveal novel strategies to prolong healthspan and prevent age-related disorders in human beings. The present review focuses on the neuroprotective actions of DR as demonstrated by accumulating experimental and encouraging albeit still limited clinical and epidemiological data. Following an overview of the most relevant evidence for the benefit of DR on neurodegenerative disorders and brain aging and damage in animals and human beings, the article will address the major mechanisms currently believed to participate in these effects, at a tissue (antiinflammation, enhanced adult neurogenesis and neuronal plasticity) and cellular (autophagy and mitochondrial biogenesis) level. Then it will "zoom-in" on the molecular circuitries (AMPK/mTOR, Sirtuins, CREB/Sirt1) whereby neuronal cells perceive the reduced availability of nutrients and translate this information into protective ...Continue Reading

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