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Life span: getting the signal from the nervous system
1Laboratory of Neurosciences, Intramural Research Program, National Institute on Aging, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA. wolkowca@grc.nia.nih.gov
Trends in Neurosciences
|May 10, 2002
Summary
Genetic and environmental factors influence lifespan. Neuroendocrine pathways, involving nervous system signals and hormones, are key regulators of longevity across species, impacting aging models.
Area of Science:
- Gerontology
- Neuroendocrinology
- Genetics
Background:
- Lifespan is influenced by genetic and environmental factors.
- Gene mutations have been shown to extend lifespan in model organisms.
- Emerging evidence points to hormonal and neural signaling in lifespan regulation.
Purpose of the Study:
- To review the evidence for nervous system control of longevity.
- To discuss the implications of neuroendocrine pathways in aging.
- To explore conserved mechanisms of lifespan determination across phylogeny.
Main Methods:
- Literature review of studies on aging in model organisms (nematodes, fruit flies, mice).
- Analysis of research on insulin-like signaling and hormonal control of lifespan.
- Examination of neuroendocrine pathways involved in longevity.
Main Results:
- Single gene mutations can significantly extend lifespan.
- Insulin-like signals from the nervous system regulate lifespan in Caenorhabditis elegans.
- Hormones controlling lifespan have been identified in fruit flies and mice.
Conclusions:
- Neuroendocrine pathways are critical determinants of lifespan across diverse species.
- The nervous system plays a significant role in regulating longevity.
- Understanding these pathways offers insights into aging processes and potential interventions.