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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.
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Metabolaging: a new geroscience perspective linking aging pathologies and metabolic dysfunction.

Fadi Khalaf1, Dalia Barayan2, Sean Saldanha1

  • 1Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada; David Braley Research Institute, Hamilton, Ontario, Canada; Hamilton Health Sciences, Hamilton, Ontario, Canada.

Metabolism: Clinical and Experimental
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Summary
This summary is machine-generated.

Aging alters metabolism, leading to "metabolaging," which impacts metabolic disorders and stress response. Understanding these age-related metabolic changes is key to developing interventions.

Keywords:
Adipose tissueAgingBurn injuryHypermetabolismInflammagingMetabolagingMetabolism

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Area of Science:

  • Gerontology
  • Metabolic Science
  • Physiology

Background:

  • Aging causes significant metabolic system alterations.
  • These changes contribute to metabolic disorders like diabetes and impaired stress response.
  • Key metabolically active organs, such as adipose tissue, decline functionally with age.

Purpose of the Study:

  • To introduce and define the concept of "metabolaging."
  • To provide a comprehensive framework for understanding age-related metabolic disruptions.
  • To explore the link between metabolaging and the body's response to acute stressors.

Main Methods:

  • Examining metabolic imbalances associated with aging hallmarks.
  • Analyzing the interaction between metabolically active organs and nutrient-sensing pathways.
  • Investigating the influence of age-related metabolic disturbances on acute stress response.

Main Results:

  • Metabolaging encompasses a broad spectrum of age-related metabolic disruptions.
  • Functional decline in organs like adipose tissue contributes to systemic metabolic imbalance.
  • Age-related metabolic dysfunction significantly affects the ability to handle acute stressors, such as burn injuries.

Conclusions:

  • Metabolaging offers a comprehensive view of age-related metabolic dysfunction.
  • Understanding metabolaging is crucial for addressing metabolic disorders in aging populations.
  • Potential interventions can mitigate the adverse effects of metabolaging and improve stress resilience.