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Analysis of Oxidative Stress in Zebrafish Embryos
11:05

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Published on: July 7, 2014

Oxidative stress and hypertension.

David G Harrison1, Maria Carolina Gongora

  • 1Department of Medicine, Division of Cardiology, Emory University School of Medicine and the Atlanta Veterans Administration Hospital, Atlanta, GA 30322, USA. dharr02@emory.edu

The Medical Clinics of North America
|May 12, 2009
PubMed
Summary

Reactive oxygen species (ROS) and T cells contribute to hypertension development. Current antioxidants are ineffective, highlighting the need for targeted therapies against ROS and T cell involvement in cardiovascular disease.

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Area of Science:

  • Cardiovascular Science
  • Immunology
  • Renal Physiology

Background:

  • Oxidative stress, driven by reactive oxygen species (ROS), plays a role in hypertension.
  • Hypertensive stimuli like high salt and angiotensin II increase ROS production in the brain, kidneys, and vasculature.
  • NADPH oxidase is a primary source of ROS, but other enzymes also contribute.

Purpose of the Study:

  • To review evidence linking ROS and oxidant stress to hypertension.
  • To explore the ineffectiveness of current antioxidant therapies.
  • To examine the emerging role of T cells in hypertension pathogenesis.

Main Methods:

  • Literature review of studies on ROS, oxidant stress, and hypertension.
  • Analysis of the role of NADPH oxidase and other enzymes in ROS production.
  • Investigation of T cell activation and cytokine release in hypertensive models.

Main Results:

  • Hypertensive stimuli promote ROS production in key organs, contributing to hypertension and its complications.
  • Conventional antioxidants have failed to effectively treat or prevent cardiovascular disease and hypertension.
  • T cells, activated by angiotensin II and sympathetic outflow, can exacerbate hypertension by releasing cytokines that promote vasoconstriction and sodium retention.

Conclusions:

  • ROS and T cell-mediated inflammation are significant factors in hypertension development.
  • Targeted therapies addressing ROS and T cell pathways are needed.
  • Further research is required to understand and interrupt T cell interactions in the central nervous system, kidney, and vasculature for therapeutic benefit.