Journal
JOURNAL OF CLINICAL MEDICINE
Volume 11, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/jcm11092449
Keywords
coronary artery disease; epicardial adipose tissue; angiopoietin-like 4; interleukin-1 beta
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Funding
- Hamamatsu Foundation for Science and Technology Promotion [15-556]
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This study investigated the expression of ANGPTL4 in epicardial adipose tissue (EAT) of patients with coronary artery disease (CAD). The results showed that the expression of ANGPTL4 was significantly increased in EAT of CAD patients and positively correlated with IL-1 beta. Additionally, non-obese CAD patients also exhibited increased expression of ANGPTL4 and IL-1 beta in EAT.
Epicardial adipose tissue (EAT) is known to affect atherosclerosis and coronary artery disease (CAD) pathogenesis, persistently releasing pro-inflammatory adipokines that affect the myocardium and coronary arteries. Angiopoietin-like 4 (ANGPTL4) is a protein secreted from adipose tissue and plays a critical role in the progression of atherosclerosis. Here, the expression of ANGPTL4 in EAT was investigated in CAD subjects. Thirty-four consecutive patients (13 patients with significant CAD; 21 patients without CAD) undergoing elective open-heart surgery were recruited. EAT and pericardial fluid were obtained at the time of surgery. mRNA expression and ANGPTL4 and IL-1 beta levels were evaluated by qRT-PCR and ELISA. The expression of ANGPTL4 (p = 0.0180) and IL-1 beta (p < 0.0001) in EAT significantly increased in the CAD group compared to that in the non-CAD group and positively correlated (p = 0.004). Multiple regression analysis indicated that CAD is a contributing factor for ANGPTL4 expression in EAT. IL-1 beta level in the pericardial fluid was significantly increased in patients with CAD (p = 0.020). Moreover, the expression of ANGPTL4 (p = 0.004) and IL-1 beta (p < 0.001) in EAT was significantly increased in non-obese patients with CAD. In summary, ANGPTL4 expression in EAT was increased in CAD patients.
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