Fig. 2.
Summary of changes that occur in the liver sinusoidal endothelial cell with aging. (a) loss of fenestrations and (b) pathways promoting ROS and cellular senescence in aging LSECs. Abbreviations: AMPK: 5′ adenosine monophosphate-activated protein kinase; BM: bone marrow; cGMP: cyclic guanosine monophosphate; EPC: endothelial progenitor cell; HGF: hepatocyte growth factor; ICAM-1: intercellular adhesion molecule 1; Id1: inhibitor of differentiation/DNA binding protein 1; IL-6: interleukin 6; NAD: nicotinamide adenine dinucleotide; NO: nitric oxide; ROS: reactive oxygen species; SIRT1: sirtuin 1; VEGF: vascular endothelial growth factor; WF: von Willebrand factor.