1. Increased Expression of miR-146a in Valvular Tissue From Patients With Aortic Valve Stenosis
- Author
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Jana Petrkova, Jana Borucka, Martin Kalab, Petra Klevcova, Jaroslav Michalek, Milos Taborsky, and Martin Petrek
- Subjects
aortic stenosis ,microRNA ,IRAK1 ,TLR4 ,epigenetics ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
miR-146a has been implicated in the regulation of the immune response as well as in inflammatory process of atherosclerosis. In the present study, we have investigated the expression of miR-146a and its targets, TLR4 a IRAK1, in aortic valve stenosis. A total of 58 patients with aortic stenosis (non- and atherosclerotic; tissue obtained during standard aortic valve replacement) were enrolled. The relative expression of mir-146a was higher in valvular tissue from patients with atherosclerosis compared to those without atherosclerosis (p = 0.01). Number of the IRAK1 and TLR4 transcripts did not differ between the investigated groups. There was a trend toward elevation of miR-146a expression in context of inflammatory infiltrate observed in the valvular tissue from patients with atherosclerosis (p = 0.06). In conclusion, in line with the acknowledged role of miR-146a in atherosclerotic inflammation, our data suggest it may be extended to the specific location of aortic valves in aortic stenosis.
- Published
- 2019
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