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Age and gender effects on apoptosis in the human coronary arterial wall

Jacques Boddaert1, Ziad Mallat, Paul Fornes

  • 1INSERM U-541, IFR Circulation, Hôpital Lariboisière, Paris, France. jacques.boddaert@psl.ap-hop-paris.fr

Mechanisms of Ageing and Development
|May 13, 2005
PubMed

Insights

Apoptosis, programmed cell death, does not significantly increase with arterial aging in healthy adults. However, active caspase-3 levels were higher in men, suggesting sex-specific differences in arterial cells.

Area of Science:

  • Cardiovascular Science
  • Cell Biology
  • Aging Research

Background:

  • The role of apoptosis (programmed cell death) in arterial aging is not well understood.
  • Investigating apoptosis in the arterial wall is crucial for understanding aging processes.

Purpose of the Study:

  • To determine if apoptosis is enhanced in the aging human arterial wall, independent of disease.
  • To explore potential sex-related differences in arterial apoptosis.

Main Methods:

  • Examined apoptosis markers including TUNEL, active caspase-3, and PARP in coronary arteries from adults aged 25-92.
  • Utilized immunohistochemistry and biochemical assays to quantify apoptotic cells and proteins.

Main Results:

  • No significant correlation was found between chronological age and apoptotic index across all three methods.
  • Significantly higher levels of active caspase-3 positive cells were observed in men compared to women (p=0.017).
  • Sex-related differences in apoptosis were not statistically significant for TUNEL and PARP methods.

Conclusions:

  • This study provides the first evidence of apoptotic cells in the healthy adult human arterial wall.
  • Apoptosis does not appear to be a primary driver of arterial aging in the absence of overt disease.
  • Sex-specific differences in arterial apoptosis warrant further investigation.

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