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Related Experiment Videos

Antioxidants for hypertension

C Kitiyakara1, C S Wilcox

  • 1Division of Nephrology and Hypertension, Georgetown University Medical Center, Washington, DC 20007, USA. kitiyakc@medlib.georgetown.edu

Current Opinion in Nephrology and Hypertension
|November 18, 1998
PubMed
Summary

Reactive oxygen species contribute to hypertension by disrupting endothelial function. Antioxidant therapy shows potential for improving endothelial function and lowering blood pressure in hypertension.

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Area of Science:

  • Cardiovascular Science
  • Oxidative Stress Research
  • Hypertension Pathogenesis

Background:

  • Reactive oxygen species (ROS) play a significant role in the development of hypertension.
  • ROS disrupt the balance between vasoconstrictors (e.g., thromboxane, isoprostanes) and vasodilators (e.g., nitric oxide) in the endothelium.
  • This imbalance leads to increased vascular resistance and hypertension.

Purpose of the Study:

  • To investigate the role of reactive oxygen species in hypertension.
  • To evaluate the potential of antioxidant therapy in managing hypertension and its cardiovascular complications.

Main Methods:

  • Review of evidence implicating ROS in hypertension pathogenesis.
  • Analysis of how ROS affect endothelial function, specifically the balance of vasoactive substances.

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  • Examination of studies on antioxidant effects on blood pressure and endothelial function in hypertensive models and humans.

    • Main Results:

    • Reactive oxygen species contribute to hypertension by promoting endothelium-dependent contractions and increasing vascular resistance.
    • Antioxidants have demonstrated the ability to restore endothelial function.
    • Antioxidants have shown efficacy in decreasing blood pressure in various hypertension models and some human studies.

    Conclusions:

    • Reactive oxygen species are key contributors to the pathogenesis of hypertension.
    • Antioxidant therapy presents a promising strategy for managing hypertension.
    • Further research may solidify the role of antioxidants in treating hypertension and preventing cardiovascular complications.