Atrial Fibrilation in Coronary Artery Disease Patients: Platelets Characteristics and Echocardiography Indexes

Abstract

The aim: To reveal the connections between platelets morphological and biochemical characteristics and echocardiography (TTE) indexes in patients with coronary artery disease (CAD) and atrial fibrillation (AF).
 Materials and methods: 300 patients were divided into 3 groups: first (CAD) – 149 patients with CAD but without arrhythmias, second (CAD+AF) – 124 patients with CAD and AF paroxysm and control group – 27 patients without CAD and arrhythmias. TTE was done by ALOKA SSD-5000. Platelets count (PC), mean platelet volume (MPV), platelets distribution width (PDW) and platelet-to-leucocyte ratio (PLR) was obtained by common blood count. Platelets amino acids spectrum was detected by method of ion exchange liquid column chromatography.
 Results: II group patients had significantly lower PC (12.20%) and higher MPV (9.30%) and PLR (41.12%) then in I group, P<0.05. II group patients had significantly higher levels of platelets isoleucine (10.73%), leucine (12.63%) and lower threonine (23.05%), serine (5.06%), glycine (32.21%), valine (30.83%) levels then in I group, P<0.05. II group patients had significantly higher levels of left atrium diameter (10.03%), left atrium volume (15.40%) and left atrium volume index (11.48%) then in I group, P <0.05. Left atrium volume and left atrium volume index were corelated with PC (r=-0.315 and r=-0.444 consequently), MPV (r=0.327 and r=0.331 consequently), PLR (r=0.313 and r=0.303 consequently) and platelets serine (r=-0.302 and r=-0.310 consequently), alanine (r=-0.306 and r=-0.355 consequently) and leucine (r=0.346 and r=0.311 consequently), P<0.05. Left ventricular mass and left ventricular mass index were corelated with MPV (r=0.308 and r=0.301 consequently), PLR (r=0.307 and r=0.305 consequently) and platelets arginine (r=0.366 and r=0.305 consequently), threonine (r=-0.474 and r=-0.383 consequently), serine (r=-0.387 and r=-0.361 consequently), alanine (r=-0.342 and r=-0.326 consequently), isoleucine (r=0.355 and r=0.328 consequently) and tyrosine (r=0.307 and r=0.321 consequently), P<0.05.
 Conclusions: Left atrium size and left ventricular mass are connected with MPV, PLR and platelets amino acids content: serine, threonine, alanine, leucine, isoleucine and tyrosine levels.

Plasma and platelets amino acids in coronary artery disease and atrial fibrillation patients – are they linked?

“…Left atrium characteristics are directly related with leucine level and inversely with alanine and serine levels. At the same time, left ventricular indices correlated with serine, threonine, alanine, arginine, and isoleucine levels, what proved the role of such platelet's changes in prothrombotic state development [31]. Huang J. et al noticed that the platelet activation process is connected with its unique proteomic changes [32], which can be not congruent with cardiomyocytes and plasma features.…”