Abstract
Background Adipose tissue (AT) is an endocrine and paracrine organ that synthesizes biologically active adipocytokines, which affect inflammation, fibrosis, and atherogenesis. Epicardial and perivascular fat depots are of great interest owing to potential effects on the myocardium and blood vessels. Objective To assess expression and secretion of adipocytokine genes in adipose tissue in patients coronary artery disease (CAD) and patients with aortic or mitral valve replacement. Methods The study included 84 patients with CAD and 50 patients with aortic or mitral valve replacement. Adipocytes were isolated from subcutaneous (SAT), epicardial (EAT), and perivascular AT (PVAT) samples. Isolated adipocytes were cultured for 24 h after which, gene expression and secretion levels of selected adipokines and cytokines in the culture medium were determined. Results The study parameters differed depending on the adipose tissue location. EAT adipocytes in CAD patients were characterized by a pronounced imbalance in the adipokine system. EAT had the lowest adiponectin gene expression and secretion, regardless of nosology and high expression levels of the leptin gene, its receptor, and interleukin-6 (IL-6) were detected. High leptin and IL-6 levels resulted in increased pro-inflammatory activity, as observed in both EAT and PVAT adipocytes, especially in individuals with coronary artery disease. Conclusion The "protective" potential of adipose tissue depends on its location.
11β-hydroxysteroid dehydrogenase type 1 gene expression is increased in ascending aorta tissue of metabolic syndrome patients with coronary artery disease
