Perivascular adipose tissue(PVAT),attached to the adventitia,is a special functional layer of the vascular wall structure.PVAT exists around most blood vessels and is mainly composed of adipocytes,fibroblasts,stem cells,mast cells and nerve cells.PVAT not only participates in energy metabolism,but also has secretory function.It plays an important role in maintaining vascular structure and regulating vascular function.Atherosclerosis is a chro-nic metabolic syndrome characterized by endothelial dysfunction,lipid deposition,and inflammatory infiltration,which is closely associated with obesity.This paper reviews the role of PVAT in atherosclerosis.
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