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Aging and plasminogen activator inhibitor-1 (PAI-1) regulation: implication in the pathogenesis of thrombotic

Koji Yamamoto1, Kyosuke Takeshita, Tetsuhito Kojima

  • 1Department of Transfusion Medicine, Nagoya University Hospital, 65 Tsurumai, Showa, Nagoya 466-8550, Japan. kojiy@med.nagoya-u.ac.jp

Cardiovascular Research
|April 12, 2005
PubMed

Insights

Plasminogen activator inhibitor-1 (PAI-1) is elevated in elderly individuals, increasing thrombosis risk. This age-related increase in PAI-1, a key fibrinolysis inhibitor, contributes to cardiovascular aging and atherosclerosis.

Area of Science:

  • Cardiovascular Science
  • Gerontology
  • Molecular Biology

Background:

  • Thrombotic cardiovascular diseases rise with age due to vascular and hemostatic system changes.
  • Age-related hypercoagulability and vascular sclerosis contribute to increased thrombosis incidence in the elderly.

Purpose of the Study:

  • To investigate the role of plasminogen activator inhibitor-1 (PAI-1) in aging-associated thrombosis and cardiovascular aging.

Main Methods:

  • Review of literature on PAI-1 expression in aging and related pathologies.
  • Analysis of factors regulating PAI-1 gene expression, including cytokines and hormones.

Main Results:

  • PAI-1 expression is elevated in the elderly and induced by aging-associated conditions like obesity, insulin resistance, stress, and vascular sclerosis.
  • Cytokines (TNF-α, TGF-β) and hormones (angiotensin II, insulin) positively regulate PAI-1 expression.
  • Obesity and stress contribute to elevated PAI-1 in an age-specific manner.

Conclusions:

  • PAI-1 plays a critical role in promoting thrombosis and vascular atherosclerosis, contributing to cardiovascular aging.
  • Further research into the genetic mechanisms of PAI-1 induction is needed to understand cardiovascular aging and thrombosis.

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