Thus, the underlying mechanism for longevity in nrf-5 mutants could be the same mechanism causing longevity due to a HT115 diet.
But in a collaboration with Miller, Roth, and other colleagues, Bartke showed in 2001 that cutting the animals' calorie intake gave them an additional increase in life span, results suggesting that the two mechanisms for achieving longevity act through different pathways (see "Dieting Dwarves Live It Up").
Animals with exceptional endocrine and metabolic systems, as well as animals that tolerate oxidative stress are proposed as good models for studying the mechanisms of longevity.
Another well-established mechanism for promoting longevity is dietary restriction.
In our analyses, we found no evidence for broad-spectrum enhanced protection against stressors under DR. Thus, the mechanism for increased longevity under DR may not involve enhanced resistance to stress.
In S. cerevisiae, a well-established mechanism for regulating longevity is the alteration of ribosomal DNA (rDNA) stability by the recombination between rDNA repeats and the accumulation of extrachromosomal rDNA circles (ERCs) [ 17].
Both the CR, CREX and the very low calorie diet group (890 kcal/d) had lower levels of DNA damage suggesting a possible mechanism for promoting longevity, however whether this is maintained long-term has yet to be verified (Heilbronn et al. 2006).
In order to understand the molecular mechanisms of longevity regulation, we recently performed a screen designed to enrich for genes common to several longevity interventions.
By providing important new insights into mechanisms of longevity regulation by a novel anti-aging compound, the study of Goldberg et al. raises important questions for future research.
Mechanisms: involvement of compound in well-known mechanisms of longevity and aging suppression.
