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Different Oxidative Stress and Inflammation Patterns of Diseased Left Anterior Descending Coronary Artery versus

Andrea Salica1, Vittoria Cammisotto2, Raffaele Scaffa1

  • 1Department of Cardiac Surgery, European Hospital, 00149 Rome, Italy.

Antioxidants (Basel, Switzerland)
|October 26, 2024
PubMed

Insights

Patients with coronary artery disease (CAD) show increased oxidative stress and inflammation in atherosclerotic arteries. Blood from the diseased left anterior descending artery (LAD) had higher oxidative stress and inflammatory markers than the healthy left internal thoracic artery (LITA).

Area of Science:

  • Cardiovascular Biology
  • Atherosclerosis Research
  • Oxidative Stress and Inflammation

Background:

  • Oxidative stress and inflammation are key factors in atherosclerosis and coronary artery disease (CAD) progression.
  • Understanding the localized burden of these factors within atherosclerotic plaques is crucial for disease management.

Purpose of the Study:

  • To quantify the oxidative stress and inflammation burden directly within atherosclerotic plaques in stable CAD patients.
  • To compare these burdens using blood from the diseased left anterior descending artery (LAD) versus the healthy left internal thoracic artery (LITA) graft in the same patient.

Main Methods:

  • Blood samples were collected from the LAD and LITA of twenty patients undergoing coronary artery bypass graft (CABG) surgery.
  • Analysis included oxidative stress markers (sNOX2-dp, H2O2, NO) and inflammation markers (TNFα, IL-6, IL-1β, IL-10).

Main Results:

  • Significantly higher oxidative stress (sNOX2-dp, H2O2) and lower nitric oxide (NO) levels were found in LAD blood compared to LITA blood.
  • Pro-inflammatory cytokines (TNFα, IL-6) were elevated in the LAD compared to the LITA.
  • No significant differences were observed for IL-1β and IL-10 levels between the LAD and LITA.

Conclusions:

  • Atherosclerotic plaques in stable CAD patients exhibit a specifically enhanced burden of oxidative stress and inflammation.
  • These findings highlight localized arterial changes in coronary artery disease.
Abstract

Keywords:
coronary artery bypass graftinflammationinternal thoracic arteryleft anterior descending arteryoxidative stress

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