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Related Experiment Videos

How does the brain control lifespan?

Mark P Mattson1, Wenzhen Duan, Navin Maswood

  • 1Laboratory of Neurosciences-4F02, National Institute on Aging Gerontology Research Center, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA. mattsonm@grc.nia.nih.gov

Ageing Research Reviews
|June 1, 2002
PubMed
Summary
This summary is machine-generated.

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The brain influences lifespan, particularly through neuronal signaling pathways that regulate energy metabolism and stress responses. Understanding these brain mechanisms offers new insights into aging and longevity.

Area of Science:

  • Neuroscience
  • Gerontology
  • Molecular Biology

Background:

  • A positive correlation exists between brain size relative to body size and lifespan across species.
  • Emerging evidence suggests the brain actively controls lifespan through various signaling pathways.

Purpose of the Study:

  • To explore the role of brain signaling pathways in determining lifespan.
  • To investigate the link between neuronal regulation of metabolism and longevity.

Main Methods:

  • Review of studies on signaling pathways in the central nervous system and peripheral stress responses.
  • Analysis of genetic and environmental factors affecting lifespan through hormonal modulation.
  • Examination of neuronal signal transduction pathways, including phosphatidylinositol-3-kinase/Akt/glycogen synthase kinase-3beta and insulin signaling.

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Main Results:

  • Neuronal signaling pathways, particularly those involving insulin signaling, are critical in regulating lifespan.
  • Dietary restriction upregulates brain-derived neurotrophic factor (BDNF), enhancing neuronal resistance to aging.
  • Brain signaling, via BDNF, can improve peripheral insulin sensitivity, suggesting a brain-controlled lifespan mechanism.

Conclusions:

  • The brain plays a crucial role in lifespan determination by monitoring and regulating peripheral energy metabolism.
  • Evolutionary adaptations likely equipped the brain to control lifespan based on environmental factors like food availability.
  • Further research into conserved brain signaling pathways will likely reveal additional mechanisms of lifespan regulation.