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[Dynamics of changes of blood inflammatory-oxidative biomarkers in acute coronary syndrome]

Iu I Ragino, A D Kuimov, Ia V Polonskaia

    Kardiologiia
    |July 17, 2012
    PubMed

    Insights

    Acute coronary syndrome (ACS) patients show elevated inflammatory markers like C-reactive protein (CRP) and interleukin-6 (IL-6), particularly in myocardial infarction (MI) cases. Oxidative stress markers in low-density lipoprotein (LDL) also correlate with MI.

    Area of Science:

    • Cardiology
    • Biochemistry
    • Immunology

    Background:

    • Acute coronary syndrome (ACS) involves complex inflammatory and oxidative stress pathways.
    • Low-density lipoprotein (LDL) oxidative modification is implicated in atherosclerosis progression.

    Purpose of the Study:

    • To investigate inflammatory cytokines and LDL oxidative modification parameters in ACS patients.
    • To assess the relationship between these biomarkers and myocardial infarction (MI) or unstable angina.

    Main Methods:

    • Blood samples were collected from 250 ACS patients (men and women) on days 1, 10, and 30 of the disease.
    • Measured inflammatory biomarkers included interleukin (IL)-6, IL-8, and C-reactive protein (CRP).
    • Assessed LDL oxidative modification by measuring lipid peroxidation (LPO) products and LDL resistance to oxidation.

    Main Results:

    • Elevated concentrations of IL-6, IL-8, and CRP were observed in MI patients, especially on day 1.
    • C-reactive protein (CRP) emerged as the most significant inflammatory biomarker for ACS, particularly in women.
    • Men with ACS exhibited increased basal levels of LDL LPO products and reduced LDL resistance to oxidation.
    • Inflammatory markers (IL-6, IL-8, CRP) and LDL LPO products were correlated and independently associated with MI.

    Conclusions:

    • Inflammatory cytokines and LDL oxidative modification are key components of ACS pathophysiology.
    • CRP is a crucial inflammatory marker for ACS, with heightened significance in women.
    • The interplay between inflammation and LDL oxidation is independently linked to myocardial infarction.

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