Aging and injury: Alterations in cellular energetics and organ function

Ninu Poulose, Raghavan Pillai Raju

Research output: Contribution to journalReview article

44 Citations (Scopus)

Abstract

Aging is characterized by increased oxidative stress, heightened inflammatory response, accelerated cellular senescence and progressive organ dysfunction. The homeostatic imbalance with aging significantly alters cellular responses to injury. Though it is unclear whether cellular energetic imbalance is a cause or effect of the aging process, preservation of mitochondrial function has been reported to be important in organ function restoration following severe injury. Unintentional injuries are ranked among the top 10 causes of death in adults of both sexes, 65 years and older. Aging associated decline in mitochondrial function has been shown to enhance the vulnerability of heart, lung, liver and kidney to ischemia/reperfusion injury. Studies have identified alterations in the level or activity of factors such as SIRT1, PGC-1α, HIF-1α and c-MYC involved in key regulatory processes in the maintenance of mitochondrial structural integrity, biogenesis and function. Studies using experimental models of hemorrhagic injury and burn have demonstrated significant influence of aging in metabolic regulation and organ function. Understanding the age-associated molecular mechanisms regulating mitochondrial dysfunction following injury is important towards identifying novel targets and therapeutic strategies to improve the outcome after injury in the elderly.

Original languageEnglish (US)
Pages (from-to)101-108
Number of pages8
JournalAging and Disease
Volume5
Issue number2
DOIs
StatePublished - Jan 1 2014

Fingerprint

Wounds and Injuries
Cell Aging
Reperfusion Injury
Cause of Death
Oxidative Stress
Theoretical Models
Maintenance
Kidney
Lung
Liver
Therapeutics

Keywords

  • Aging
  • Hemorrhage
  • Hypoxia
  • Ischemia
  • Mitochondria
  • Sirt1

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Geriatrics and Gerontology
  • Clinical Neurology
  • Cell Biology

Cite this

Aging and injury : Alterations in cellular energetics and organ function. / Poulose, Ninu; Raju, Raghavan Pillai.

In: Aging and Disease, Vol. 5, No. 2, 01.01.2014, p. 101-108.

Research output: Contribution to journalReview article

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