Abstract Number: PB0021
Meeting: ISTH 2021 Congress
Background: Transcatheter aortic valve implantation (TAVI) is an emerging invasive therapeutic strategy for patients with severe aortic stenosis (AS) significantly enhancing not only quality-of-life measures but also improving short-and long-term survival rates.
Aims: We aimed to analyze correlation between expression levels of platelet-derived microRNAs in patients with heart failure (HF) due to AS who underwent TAVI procedure and assess their association with primary MACE (major adverse cardiac events) defined by all cause mortality and secondary MACE defined as cardiovascular mortality, ischemic stroke, and non-fatal myocardial infarction.
Methods: 61 patients before and after the TAVI procedure were included. PlasmaRNA was extracted by mirVANA PARIS Kit and quality of RNA was assessed by fluorometric assay. GEP analysis was performed using the Clariom D pico chips, analyzed on the Affymetrix platform. RT-PCR was performed in order to validate the miRNAs in 61 patients by using the Taqman advanced protocol. MiRNA related to platelet function/antiplatelet treatment were chosen among those with the most relevant modulation between the groups. Wilcoxon test was performed for miRNAs comparison before and after TAVI. Calculations were performed using SPSS version 22.0, p<0.05 (IBM Corporation, Chicago, USA).
Results: We have found that miR-223, miR-125b and miR-125a were significantly increased in patients after the TAVI procedure. ROC analysis showed that increased miR-223 expression after the TAVI procedure might slightly have protective value against MACE outcome.
We have found that miR-223, miR-125b and miR-125a were significantly increased in patients after the TAVI procedure. ROC analysis showed that increased miR-223 expression after the TAVI procedure might slightly have protective value against MACE outcome.
Conclusions: Our analysis showed alteration of circulating miRNAs after the TAVI procedure and miR-223 might have a predictive value for MACE prognosis in patients with HF due to AS who underwent TAVI procedure.
To cite this abstract in AMA style:Eyileten C, Fitas A, Jarosz-Popek J, Adem T, Jakubik D, Wolska M, Nowak A, Czajka P, Postuła M, Gąsecka A. Platelet-derived microRNAs Are Increased after Transcatheter Aortic Valve Implantation and May Predict Adverse Outcomes in Patients with Heart Failure [abstract]. Res Pract Thromb Haemost. 2021; 5 (Suppl 2). https://abstracts.isth.org/abstract/platelet-derived-micrornas-are-increased-after-transcatheter-aortic-valve-implantation-and-may-predict-adverse-outcomes-in-patients-with-heart-failure/. Accessed October 20, 2021.
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