Plasma concentrations of extracellular vesicles are decreased in patients with post-infarct cardiac remodelling

Aleksandra Gąsecka, Kinga Pluta, Katarzyna Solarska, Bartłomiej Rydz, Ceren Eyileten, Marek Postula, Edwin van der Pol, Rienk Nieuwland, Monika Budnik, Janusz Kochanowski, Miłosz J. Jaguszewski, Łukasz Szarpak, Tomasz Mazurek, Agnieszka Kapłon-Cieślicka, Grzegorz Opolski, Krzysztof J. Filipiak

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Abstract

Background, the mechanisms underlying left ventricular remodelling (LVR) after acute myocardial infarction (AMI) remain obscure. In the course of AMI, blood cells and endothelial cells release extracellular vesicles (EVs). We hypothesized that changes in EV concentrations after AMI may underlie LVR. Methods, plasma concentrations of EVs from endothelial cells (CD146+), erythrocytes (CD235a+), leukocytes (CD45+), platelets (CD61+), activated platelets (P-selectin+), and EVs exposing phosphatidylserine after AMI were determined by flow cytometry in 55 patients with the first AMI. LVR was defined as an increase in left ventricular end-diastolic volume by 20% at 6 months after AMI, compared to baseline. Results, baseline concentrations of EVs from endothelial cells, erythrocytes and platelets were lower in patients who developed LVR (p ≤ 0.02 for all). Concentrations of EVs from endothelial cells and erythrocytes were independent LVR predictors (OR 8.2, CI 1.3–54.2 and OR 17.8, CI 2.3–138.6, respectively) in multivariate analysis. Combining the three EV subtypes allowed to predict LVR with 83% sensitivity and 87% specificity. Conclusions, decreased plasma concentrations of EVs from endothelial cells, erythrocytes and platelets predict LVR after AMI. Since EV release EVs contributes to cellular homeostasis by waste removal, decreased concentrations of EVs may indicate dysfunctional cardiac homeostasis after AMI, thus promoting LVR.
Original languageEnglish
Article number97
Pages (from-to)1-13
Number of pages13
JournalBiology
Volume10
Issue number2
DOIs
Publication statusPublished - 1 Feb 2021

Keywords

  • Acute myocardial infarction
  • Extracellular vesicles
  • Flow cytometry
  • Heart failure
  • Left-ventricular remodelling

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