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首页> 外文期刊>Current opinion in lipidology >Functions of scavenger receptor class B, type i in atherosclerosis
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Functions of scavenger receptor class B, type i in atherosclerosis

机译:B型清道夫受体在动脉粥样硬化中的功能

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PURPOSE OF REVIEW: This review highlights the diverse roles of the high-affinity HDL receptor scavenger receptor class B, type I (SR-BI) in the modulation of global cholesterol homeostasis and vascular cell function, and the potential implications of these processes in atherosclerosis. RECENT FINDINGS: SR-BI in the liver plays a critical role in reverse cholesterol transport and it dramatically impacts the characteristics of the HDL particle, and through reverse cholesterol transport it promotes an antiatherogenic lipid environment in the vascular wall. SR-BI in macrophages may influence their inflammatory phenotype. In endothelial cells, SR-BI mediates HDL-induced endothelial nitric oxide synthase activation and proliferation and migration, and in platelets SR-BI may be prothrombotic in the setting of dyslipidemia. Several polymorphisms of SR-BI have been reported in humans that influence receptor expression or function. SUMMARY: In addition to regulating global lipid metabolism, SR-BI influences the functions of a variety of vascular cells relevant to atherosclerosis. Studies of SR-BI genetics in humans partially support the conclusions drawn from experimental models. However, because of the multiple functions of SR-BI, the diversity of cell types in which it is expressed, and the influence of the receptor on the characteristics of its own ligand, our understanding of the biology of the receptor is just emerging.
机译:审查的目的:这项审查突出了高亲和力的HDL受体清除剂B类受体I(SR-BI)在调节全球胆固醇稳态和血管细胞功能中的多种作用,以及这些过程在动脉粥样硬化中的潜在影响。最新发现:肝脏中的SR-BI在胆固醇逆向转运中起关键作用,它极大地影响了HDL颗粒的特性,并且通过胆固醇逆向转运,它促进了血管壁的抗动脉粥样硬化脂质环境。巨噬细胞中的SR-BI可能会影响其炎症表型。在内皮细胞中,SR-BI介导HDL诱导的内皮一氧化氮合酶的激活,增殖和迁移,在血小板中,SR-BI在血脂异常的情况下可能是血栓形成的。在人类中已经报道了SR-BI的几种多态性,其影响受体的表达或功能。摘要:除了调节整体脂质代谢外,SR-BI还影响与动脉粥样硬化相关的多种血管细胞的功能。对人类SR-BI遗传学的研究部分支持了从实验模型得出的结论。但是,由于SR-BI的多种功能,表达它的细胞类型的多样性以及受体对其自身配体特征的影响,我们对受体生物学的理解才刚刚出现。

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