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Coronary Progenitor Cells and Soluble Biomarkers in Cardiovascular Prognosis after Coronary Angioplasty
10:03

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Published on: January 28, 2020

Systemic versus coronary levels of inflammation in acute coronary syndromes

Makoto Suzuki1, Makoto Saito, Takayuki Nagai

  • 1Division of Cardiology, Ehime Prefectural Central Hospital, Ehime, Japan. suzuki-m@mail.netwave.or.jp

Angiology
|October 7, 2006
PubMed

Insights

Systemic and coronary inflammation markers, including high-sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6), were compared in acute myocardial infarction (AMI) patients. Higher coronary levels of IL-6 and matrix metalloproteinase-9 (MMP-9) were observed, linked to vulnerable plaque morphology.

Area of Science:

  • Cardiology
  • Biochemistry
  • Inflammation Research

Background:

  • Acute coronary syndromes (ACS) involve systemic inflammation.
  • The relationship between systemic and local coronary inflammation in ACS is not fully understood.
  • Understanding this link may offer insights into disease mechanisms and vulnerable plaque characteristics.

Purpose of the Study:

  • To investigate the association between systemic and coronary levels of inflammatory mediators in patients with acute myocardial infarction (AMI).
  • To explore the correlation between systemic inflammatory markers and culprit coronary morphology.
  • To elucidate the role of inflammation in the early phase of AMI.

Main Methods:

  • Analysis of high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), and matrix metalloproteinase-9 (MMP-9) in peripheral blood and coronary thrombus samples from 20 AMI patients.
  • Comparison of systemic and coronary inflammatory mediator levels before angioplasty.
  • Intravascular ultrasound was used to assess culprit coronary plaque morphology and its relation to systemic inflammatory markers.

Main Results:

  • Systemic and coronary hs-CRP levels were comparable.
  • Coronary levels of IL-6 and MMP-9 were significantly higher than systemic levels.
  • Systemic hs-CRP correlated with coronary IL-6 levels, and both systemic hs-CRP and IL-6 correlated positively with culprit coronary plaque area.

Conclusions:

  • A link exists between systemic and coronary inflammation in AMI patients.
  • Elevated systemic inflammatory markers are associated with vulnerable coronary plaque morphology.
  • These findings contribute to understanding the inflammatory processes underlying ACS and plaque vulnerability.

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