What is the fine-grained topic of the following text: Methods: We aimed to evaluate the atheroprotective effects of TSG-6 on human endothelial cells (HECs), human monocyte-derived macrophages (HMDMs), human aortic smooth muscle cells (HASMCs) in vitro, and aortic lesions in apolipoprotein E-deficient (ApoE-/-) mice, along with its expression levels in coronary lesions and plasma from patients with coronary artery disease (CAD). Only return the topic.
The atheroprotective effects of TSG-6 on human cells and aortic lesions.