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Related Concept Videos

Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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Related Experiment Video

Updated: Dec 21, 2025

Endurance Training Protocol and Longitudinal Performance Assays for Drosophila melanogaster
09:49

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Endurance exercise protects aging Drosophila from high-salt diet (HSD)-induced climbing capacity decline and lifespan

Deng-Tai Wen1, Wei-Qing Wang2, Wen-Qi Hou2

  • 1Department of Physical Education, Ludong University, City Yantai 264025, Shan Dong Province, China dt.wen@foxmail.com.

Biology Open
|May 17, 2020
PubMed
Summary

A high-salt diet accelerates aging in flies by impairing climbing and lifespan. Endurance exercise counteracts these effects by boosting the dFOXO/SOD pathway, enhancing salt tolerance and longevity.

Keywords:
AgingClimbing abilityExerciseHigh-salt dietLifespandFOXO/SOD

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Area of Science:

  • Aging research
  • Genetics
  • Physiology

Background:

  • High-salt diets (HSD) contribute to age-related decline, including impaired mobility and reduced lifespan.
  • Endurance exercise is known to mitigate various age-related diseases, but its protective effects against HSD-induced decline in aging individuals are not well understood.

Purpose of the Study:

  • To investigate the impact of endurance exercise on HSD-induced impairments in climbing capacity and longevity in aging *Drosophila*.
  • To elucidate the molecular mechanisms, specifically the roles of the *salt* gene and *dFOXO* pathway, in mediating these effects.

Main Methods:

  • Aging *Drosophila* were subjected to endurance exercise and a high-salt diet from 1 to 5 weeks of age.
  • Genetic manipulation (UAS/Gal4 system) was used to overexpress or knockdown the *salt* and *dFOXO* genes.
  • Key physiological and molecular markers, including climbing ability, lifespan, gene expression, SOD activity, and malondialdehyde levels, were assessed.

Main Results:

  • A high-salt diet, *salt* gene overexpression, and *dFOXO* knockdown significantly reduced climbing endurance, lifespan, and antioxidant capacity while increasing oxidative stress markers.
  • Conversely, endurance exercise and *dFOXO* overexpression in HSD-fed aging flies significantly improved climbing ability, lifespan, and antioxidant function.
  • Endurance exercise did not significantly alter *salt* gene expression but enhanced the *dFOXO*/SOD pathway.

Conclusions:

  • A high-salt diet accelerates age-related decline in climbing capacity and mortality by upregulating *salt* expression and inhibiting the *dFOXO*/SOD pathway.
  • Enhanced activity of the *dFOXO*/SOD pathway is crucial for mediating the resistance of endurance exercise to HSD-induced impairments in climbing capacity and longevity in aging *Drosophila*.