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Related Experiment Videos

Calorie restriction mimetics: an emerging research field.

Donald K Ingram1, Min Zhu, Jacek Mamczarz

  • 1Laboratory of Experimental Gerontology, Intramural Research Program, National Institute on Aging, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA. ingramd@grc.nia.nih.gov

Aging Cell
|April 22, 2006
PubMed
Summary

Calorie restriction (CR) extends lifespan and healthspan across species. Researchers are developing CR mimetics (CRMs) to mimic these benefits without dietary changes, offering a promising aging intervention strategy.

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Area of Science:

  • Gerontology and Nutritional Science
  • Metabolic Research
  • Pharmacology

Background:

  • Calorie restriction (CR) is the most effective intervention for extending lifespan and healthspan in numerous species.
  • CR delays age-related diseases, improves stress resistance, and slows functional decline.
  • Human relevance of CR is under investigation, with clinical trials ongoing, but practical limitations exist.

Purpose of the Study:

  • To explore the potential of 'CR mimetics' (CRMs) as an alternative strategy to CR for promoting longevity and healthspan.
  • To identify compounds that mimic CR's effects on metabolic and stress response pathways without requiring caloric intake reduction.

Main Methods:

  • Assessment of compounds like 2-deoxyglucose, metformin, and resveratrol as potential CRMs.

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  • Evaluation of physiological responses in initial studies, including body temperature, plasma insulin, and neuroprotection.
  • Ongoing research focuses on lifespan analyses and toxicity studies for comprehensive CRM assessment.

    • Main Results:

    • Initial studies show CRMs can induce physiological changes similar to CR, such as reduced body temperature and plasma insulin.
    • CRMs demonstrate neuroprotective effects, including enhanced dopamine action and increased neurotrophic factors.
    • Promising preliminary results suggest CRMs may offer benefits comparable to CR.

    Conclusions:

    • CR mimetics represent a promising and expanding research area for developing interventions that mimic CR's pro-longevity effects.
    • Further lifespan and toxicity studies are essential to fully validate the potential of CRMs.
    • CRMs offer a potential strategy to achieve healthspan and lifespan benefits without the strictures of dietary calorie restriction.