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Related Experiment Videos

Clots, kinins and coronaries.

Nicholas L M Cruden1, David E Newby

  • 1Department of Cardiology, Royal Infirmary of Edinburgh, Little France, Edinburgh EH16 5SA, UK. nick cruden@ed.ac.uk

Atherosclerosis
|July 19, 2005
PubMed
Summary

Bradykinin enhances the body's natural clot-dissolving process, tissue-type plasminogen activator, which is crucial for managing atherosclerosis. This peptide's effects are amplified by ACE inhibitors, offering new therapeutic avenues for cardiovascular disease.

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Area of Science:

  • Cardiovascular Science
  • Vascular Biology
  • Thrombosis Research

Background:

  • Intravascular thrombus formation is key to atherosclerotic events.
  • Endogenous fibrinolysis, dependent on endothelial function, regulates thrombus resolution.
  • Bradykinin, a vasodilator peptide, is released at thrombus sites and promotes fibrinolysis.

Purpose of the Study:

  • To investigate the role of bradykinin in regulating endogenous fibrinolysis and intravascular thrombosis.
  • To explore the interaction between bradykinin, angiotensin-converting enzyme (ACE) inhibition, and cardiovascular disease.

Main Methods:

  • In vivo studies in human peripheral and coronary circulations.
  • Analysis of bradykinin's pro-fibrinolytic effects.
  • Assessment of bradykinin potentiation by ACE inhibitors.

Main Results:

  • Bradykinin significantly contributes to the regulation of endogenous fibrinolysis and intravascular thrombosis.
  • The pro-fibrinolytic effects of bradykinin are markedly enhanced by ACE inhibition.
  • ACE inhibition's anti-ischaemic effects in atherosclerosis may be partly explained by bradykinin potentiation.

Conclusions:

  • Bradykinin plays a vital role in controlling clot formation and resolution in cardiovascular disease.
  • Potentiating bradykinin and fibrinolysis, potentially via novel agents like thrombin activatable fibrinolysis inhibitor inhibitors, offers future therapeutic strategies.
  • Targeting bradykinin pathways may help treat and prevent atherosclerosis and related cardiovascular conditions.

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