Analysis of the links between endothelium-dependent vasodilation indicators and the levels of high-sensitivity C-reactive protein and fractalkine/CX3CL1 in patients with acute coronary syndrome

Objective: to study and analyze the links between endothelium-dependent vasodilation (EDV) indicators and the levels of fractalkine (FN/CX3CL1) and high sensitivity C-reactive protein (hs-CRP) in patients with acute coronary syndrome (ACS).

Materials and methods: among the examined individuals with ACS, 63 patients had acute myocardial infarction (MI); 41 patients had unstable angina (UA), represented by first – time angina in 15 people and 26 people had progressive angina. Control group included 20 healthy control individuals. Pharmacological test with 5% acetylcholine (AcH) was used to assess the functional state of the vascular endothelium. Enzyme-linked immunosorbent assay was used to determine the levels of FN/CX3CL1 and hs-CRP.

Results: all the examined patients with ACS showed statistically significant changes in EDV indicators compared to the control group, as well as an increase in the level of FN/CX3CL1 and hs-CRP. The most pronounced changes of the values of EDV indicators and the levels of FN/CX3CL1 and hs-CRP, from the examined patients, were detected among patients with acute MI. Th e presence of correlations between the studied indicators was revealed. Th e strength of the identified links was greater among patients with acute MI, compared to patients with UA. Th e strength of the links found in patients with both UA and acute MI was greater between EDV indicators and FN/CX3CL1 levels, than between EDV indicators and hs-CRP levels.

Conclusions:all the examined patients with ACS had the EDV disorders associated with the severity of systemic infl ammation. In the group of patients with acute MI, the severity of EDV disorders was greater than in patients with UA, which was apparently due to the infl uence of the resorption-necrotic syndrome, which potentiates increased systemic infl ammation and damage to the endothelium of microvessels with EDV disorders, which was confirmed by the results of correlation analysis. A positive link was found between the levels of FN/CX3CL1 hs-CRP.

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