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Platelets oxidative stress in Indian patients with ischemic heart disease

Mahdi Garelnabi1, Vinod Gupta, Venkatesan Mallika

  • 1Department of Clinical Laboratory and Nutritional Sciences, University of Massachusetts Lowell, Massacchusetts 01854, USA. Mahdi_Garelnabi@uml.edu

Journal of Clinical Laboratory Analysis
|January 21, 2010
PubMed

Insights

Indian patients with ischemic heart disease show increased platelet oxidative stress, evidenced by higher malondialdehyde (MDA) levels and platelet activation. This occurs alongside reduced antioxidant enzyme activity, suggesting a link between oxidative damage and heart disease progression.

Area of Science:

  • Cardiovascular Medicine
  • Biochemistry
  • Oxidative Stress Research

Background:

  • Oxidative stress contributes to atherosclerosis and vascular injury.
  • Platelet activation and lipid peroxidation are key factors in ischemic heart disease.

Purpose of the Study:

  • To investigate platelet oxidative stress in Indian patients with ischemic heart disease.

Main Methods:

  • Measured platelet aggregation, malondialdehyde (MDA), plasma-ionized Ca2+, and antioxidant enzymes (glutathione peroxidase, superoxide dismutase).
  • Compared healthy volunteers (40) with patients diagnosed with myocardial infarction, unstable angina, and stable angina (40 each).

Main Results:

  • Significantly increased platelet aggregation, MDA, and plasma-ionized Ca2+ in patient groups versus controls.
  • Overall decreased antioxidant enzyme activity observed in patients, with a minor increase in glutathione peroxidase in myocardial infarction patients.

Conclusions:

  • Platelet lipid peroxidation, indicated by elevated MDA, is heightened in ischemic heart disease.
  • Increased oxidative stress in these patients correlates with platelet activation and diminished antioxidant enzyme function.
Abstract

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