Serum markers of apoptosis decrease with age and cancer stage.

Nilay Kavathia, Alka Jain, Jeremy Walston, Brock A. Beamer, Neal S. Fedarko

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


The physical manifestations of aging reflect a loss of homeostasis that effects molecular, cellular and organ system functional capacity. As a sentinel homeostatic pathway, changes in apoptosis can have pathophysiological consequences in both aging and disease. To assess baseline global apoptosis balance, sera from 204 clinically normal subjects had levels of sFas (inhibitor of apoptosis), sFasL (stimulator of apoptosis), and total cytochrome c (released from cells during apoptosis) measured. Serum levels of sFas were significantly higher while sFasL and cytochrome c levels were lower in men compared to women. With increasing age there was a decrease in apoptotic markers (cytochrome c) and pro-apoptotic factors (sFasL) and an increase in anti-apoptotic factors (sFas) in circulation. The observed gender differences are consistent with the known differences between genders in mortality and morbidity. In a separate cohort, subjects with either breast (n = 66) or prostate cancer (n = 38) exhibited significantly elevated sFas with reduced sFasL and total cytochrome c regardless of age. These markers correlated with disease severity consistent with tumor subversion of apoptosis. The shift toward less global apoptosis with increasing age in normal subjects is consistent with increased incidence of diseases whose pathophysiology involves apoptosis dysregulation.

Original languageEnglish (US)
Pages (from-to)652-663
Number of pages12
Issue number7
StatePublished - Jul 2009
Externally publishedYes

ASJC Scopus subject areas

  • Aging
  • Cell Biology


Dive into the research topics of 'Serum markers of apoptosis decrease with age and cancer stage.'. Together they form a unique fingerprint.

Cite this