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Different Expression of Mitochondrial and Endoplasmic Reticulum Stress Genes in Epicardial Adipose Tissue Depends on Coronary Atherosclerosis

H. Kratochvílová, M. Mráz, BJ. Kasperová, D. Hlaváček, J. Mahrík, I. Laňková, A. Cinkajzlová, Z. Matloch, Z. Lacinová, J. Trnovská, P. Ivák, P. Novodvorský, I. Netuka, M. Haluzík

. 2021 ; 22 (9) : . [pub] 20210426

Language English Country Switzerland

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc21018781

Grant support
IN 00023001 Health, Czech Republic - conceptual development of research organization ("Institute for Clinical and Experimental Medicine - IKEM
NV19-02-00118 Ministry of Health of the Czech Republic
RVO VFN64165 Ministry of Health, Czech Republic

The aim of our study was to analyze mitochondrial and endoplasmic reticulum (ER) gene expression profiles in subcutaneous (SAT) and epicardial (EAT) adipose tissue, skeletal muscle, and myocardium in patients with and without CAD undergoing elective cardiac surgery. Thirty-eight patients, 27 with (CAD group) and 11 without CAD (noCAD group), undergoing coronary artery bypass grafting and/or valvular surgery were included in the study. EAT, SAT, intercostal skeletal muscle, and right atrium tissue and blood samples were collected at the start and end of surgery; mRNA expression of selected mitochondrial and ER stress genes was assessed using qRT-PCR. The presence of CAD was associated with decreased mRNA expression of most of the investigated mitochondrial respiratory chain genes in EAT, while no such changes were seen in SAT or other tissues. In contrast, the expression of ER stress genes did not differ between the CAD and noCAD groups in almost any tissue. Cardiac surgery further augmented mitochondrial dysfunction in EAT. In our study, CAD was associated with decreased expression of mitochondrial, but not endoplasmic reticulum stress genes in EAT. These changes may contribute to the acceleration of coronary atherosclerosis.

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