Fig. 1
From: Omentin-1 is associated with atrial fibrillation in patients with cardiac valve disease
Epicardial adipose tissue (EAT) structure, omentin-1, and TGF-β1 expression in human samples. Representative pictures of Masson’s trichrome stained right atrial appendages (a) (100× magnification) revealed severe atrial fibrosis in patients with atrial fibrillation (AF) (AF group, n = 18; nAF group, n = 13). Representative immunohistochemical images of omentin-1 (b) in right atrial appendages and quantitative protein expression level. Omentin-1 expression in right atrial appendages was detected via western blotting (c) (AF group, n = 4; nAF group, n = 4). Representative images of H&E-stained EAT (d) (100× magnification) showed adipocyte hypertrophy in patients with AF (AF group, n = 20; nAF group, n = 20). Representative images of Masson’s trichrome-stained EAT (D) (100× magnification) indicated severe EAT fibrosis in patients with AF. Representative immunohistochemical images of omentin-1 (e) and TGF-β1 (e) in EAT and respective quantitative protein expression levels. *P < 0.05 vs nAF group, **P < 0.01 vs nAF group, ***P < 0.001 vs nAF group