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Related Experiment Videos

Vitamin E, oxidative stress, and inflammation.

U Singh1, S Devaraj, I Jialal

  • 1Laboratory for Atherosclerosis and Metabolic Research, University of California Davis Medical Center, Sacramento, California 95817, USA. usingh@ucdavis.edu

Annual Review of Nutrition
|July 14, 2005
PubMed
Summary

Alpha-tocopherol (AT), a form of vitamin E, shows promise in combating cardiovascular disease (CVD) by reducing oxidative stress and inflammation. AT supplementation may lower CVD risk factors and inhibit key inflammatory pathways.

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Area of Science:

  • Biochemistry and Molecular Biology
  • Cardiovascular Medicine
  • Nutritional Science

Background:

  • Cardiovascular disease (CVD) is a leading cause of death globally, with increasing incidence in developing nations.
  • Oxidative stress and inflammation, particularly lipoprotein oxidation, play critical roles in the development of atherosclerosis.
  • Proinflammatory cytokines and C-reactive protein (CRP) are implicated as risk markers for CVD.

Purpose of the Study:

  • To investigate the potential cardiovascular benefits of dietary micronutrients with antioxidant and anti-inflammatory properties.
  • To specifically examine the role of alpha-tocopherol (AT), a form of vitamin E, in mitigating cardiovascular disease risk factors.

Main Methods:

  • Review of evidence from human subjects and animal models on alpha-tocopherol (AT) supplementation.

Related Experiment Videos

  • Analysis of AT's effects on lipid peroxidation, oxidative stress markers (e.g., superoxide production), and inflammatory pathways.
  • Examination of AT's impact on monocyte adhesion, cytokine release, and CRP levels.

    • Main Results:

    • AT supplementation reduced lipid peroxidation and superoxide production by modulating NADPH oxidase and scavenger receptors.
    • High-dose AT therapy decreased the release of proinflammatory cytokines (IL-8), PAI-1, and monocyte adhesion to endothelium.
    • AT was shown to reduce C-reactive protein (CRP) levels in patients with CVD and those at risk.

    Conclusions:

    • Alpha-tocopherol (AT) possesses significant antioxidant and anti-inflammatory properties relevant to cardiovascular health.
    • AT may exert beneficial effects on cardiovascular disease by inhibiting key molecular pathways involved in atherogenesis.
    • AT, when administered in appropriate forms and doses, could be a valuable therapeutic strategy for high-risk populations.