Enzymatic oxidant and antioxidants of human blood platelets in unstable angina and myocardial infarction

Int J Cardiol. 2000 Oct;76(1):33-8. doi: 10.1016/s0167-5273(00)00344-2.

Abstract

In ischaemic heart conditions we report a remarkable increase in platelet xanthine oxidase activity and rise in the levels of malondialdehyde (MDA) with concomitant decrease in the activities of free radical scavenging enzymes - superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase. The increased levels of free radical generating system and MDA and lowered levels of free radical scavenging systems seem to have critical role in ischaemic heart conditions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Angina, Unstable / blood
  • Angina, Unstable / enzymology*
  • Antioxidants / metabolism*
  • Blood Platelets / enzymology*
  • Blood Proteins / metabolism
  • Catalase / blood
  • Free Radicals / blood
  • Glutathione Peroxidase / blood
  • Glutathione Reductase / blood
  • Humans
  • Lipid Peroxidation
  • Myocardial Infarction / blood
  • Myocardial Infarction / enzymology*
  • Superoxide Dismutase / blood
  • Xanthine Oxidase / blood

Substances

  • Antioxidants
  • Blood Proteins
  • Free Radicals
  • Catalase
  • Glutathione Peroxidase
  • Superoxide Dismutase
  • Xanthine Oxidase
  • Glutathione Reductase