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Nitric oxide in cardiovascular diseases

E Nava1, G Noll, T F Lüscher

  • 1Department of Cardiology, Cardiovascular Research, University Hospital, Bern, Switzerland.

Annals of Medicine
|June 1, 1995
PubMed
Summary

Nitric oxide (NO), a key mediator, plays complex roles in cardiovascular diseases like hypertension and atherosclerosis. Inhibiting its synthesis may offer future therapeutic benefits for these conditions.

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Area of Science:

  • Biochemistry
  • Cardiovascular Physiology
  • Pathophysiology

Background:

  • Nitric oxide (NO) is synthesized from L-arginine by nitric oxide synthases (NOS).
  • Endothelium-derived NO, produced by constitutive NOS, influences cardiovascular health.
  • NO's role in cardiovascular diseases is complex and context-dependent.

Purpose of the Study:

  • To explore the multifaceted roles of nitric oxide in various cardiovascular diseases.
  • To investigate the controversial involvement of NO in hypertension and atherosclerosis.
  • To highlight potential therapeutic strategies targeting NO synthesis.

Main Methods:

  • Review of existing literature on nitric oxide in cardiovascular pathophysiology.
  • Analysis of NO production and function in different models of hypertension and atherosclerosis.
  • Examination of NO's role in cardiac function and immunopathological conditions.

Main Results:

  • NO's role in hypertension varies; production may be increased but ineffective or impaired.
  • In atherosclerosis, superoxide radicals can degrade NO, reducing vasodilation.
  • Inducible NOS overexpression in endotoxin shock contributes to cardiac dysfunction and hypotension.

Conclusions:

  • Nitric oxide's involvement in cardiovascular diseases is intricate, requiring further elucidation.
  • Therapeutic strategies targeting NO synthesis inhibitors show promise for treating conditions like endotoxin shock.
  • Understanding NO's dual role is crucial for developing effective cardiovascular therapies.

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