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How mental stress affects endothelial function

Noboru Toda1, Megumi Nakanishi-Toda

  • 1Toyama Institute for Cardiovascular Pharmacology Research, 7-13, 1-Chome, Azuchi-machi, Chuo-ku, Osaka 541-0052, Japan. n.toda.toyama-bldg@orion.ocn.ne.jp

Pflugers Archiv : European Journal of Physiology
|September 28, 2011
PubMed

Insights

Mental stress impairs endothelial function, a key factor in cardiovascular disease. Lifestyle changes and stress-reducing interventions can help prevent and treat this dysfunction.

Area of Science:

  • Cardiovascular Science
  • Stress Physiology
  • Endothelial Biology

Background:

  • Mental stress is a significant contributor to cardiovascular events.
  • Stress-related endothelial dysfunction is an early risk factor for severe cardiovascular disorders.
  • Both acute and chronic stress negatively impact endothelial function.

Purpose of the Study:

  • To review the mechanisms by which mental stress affects endothelial function.
  • To explore the role of stress hormones and mediators in endothelial dysfunction.
  • To identify potential interventions for stress-related endothelial dysfunction.

Main Methods:

  • Literature review of studies on mental stress and endothelial function.
  • Analysis of the molecular mechanisms involving stress hormones (e.g., glucocorticoids, catecholamines, endothelin-1) and cytokines.
  • Examination of the effects of nitric oxide synthase (NOS) and nitric oxide (NO) pathways.

Main Results:

  • Stress hormones like glucocorticoids and endothelin-1, along with pro-inflammatory cytokines, contribute to endothelial dysfunction.
  • Mechanisms include reduced endothelial nitric oxide synthase (eNOS) expression/activity and increased NO degradation.
  • While catecholamines can impair function with sustained hypertension, endogenous opioids show protective effects.

Conclusions:

  • Stress-induced endothelial dysfunction is mediated by hormonal and inflammatory pathways.
  • Interventions targeting cortisol, endothelin-1, inflammation, and promoting positive coping mechanisms are crucial.
  • Preventing and treating stress-related endothelial dysfunction can mitigate cardiovascular disease risk.

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