The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Institutional Review Board of Medical University of Silesia, Katowice, Poland (approval No. KNW/0022/KBI/98/15).
KEYWORDS
TOPICS
ABSTRACT
Lipids and inflammation are crucial components in acute myocardial infarction (AMI) pathophysiology. The aim of this study was to assess genetic expression of interleukin 1 beta (IL-1β) and subtilisin/kexin type 9 protein convertase (PCSK9) in AMI patients. 112 AMI patients – 55 with ST-segment elevation myocardial infarction (STEMI) and 57 with non-ST-segment elevation myocardial infarction (NSTEMI) – aged 35 to 92 (average age 65) were enrolled into the study. Control subjects were those with excluded coronary artery disease (CAD; n = 41) and with chronic coronary syndrome (CCS; n = 53). RNA extraction from peripheral blood mononuclear cells (PBMCs) using TRIzol Reagent (Invitrogen) method and genetic expression using quantitative real-time polymerase chain reaction (QRT PCR) method were performed. PCSK9 expression was higher (p = 0.04) and IL-1β lower (p < 0.001) in AMI subjects compared to controls. Higher PCSK9 transcriptional activity was found in more advanced stages of CAD, in male, in cases of increased body weight, decreased left ventricular ejection fraction (LVEF), and high-density lipoprotein (HDL) cholesterol concentration. Higher IL-1β expression was observed in patients with AMI and concomitant hypercholesterolemia. Thorough understanding of IL-1β and PCSK9 biology, key representatives of two basic pathophysiological links underlying myocardial infarction, is of great practical importance. This is particularly important due to currently wide availability of pharmacological intervention within metabolic pathways of these molecules.
FUNDING
This research received no external funding.
CONFLICT OF INTEREST
The authors declare no conflict of interest.
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