作者: Hyun Soon Lee
关键词: Chemistry 、 Protein kinase C 、 Activator (genetics) 、 Apolipoprotein B 、 Internal medicine 、 Mesangial cell 、 Endocrinology 、 Glomerulosclerosis 、 Plasminogen activator 、 Lipoprotein 、 Glomerular Mesangial Cell
摘要: Hypercholesterolemia is a common feature of nephrosis or uremia. Dietary hypercholesterolemia aggravates the renal injury in experimental focal segmental glomerulosclerosis (FSGS). mainly due to increased level low-density lipoprotein (LDL). Accumulation apolipoprotein B-containing lipoproteins LDL frequently shown diseased human glomeruli. Furthermore, oxidized (Ox-LDL) has been demonstrated lesions FSGS mesangial areas. Ox-LDL glomeruli could recruit circulating monocytes leading accumulation macrophages and subsequent foam cell formation. Increased release macrophage-derived products produce an altered matrix biosynthesis. In cultured cells, susceptible oxidative modification, stimulates mRNA and/or protein expression α1(I), α1(III) α1(IV) collagen, laminin, fibronectin transforming growth factor-β1 (TGF-β1). also upregulates plasminogen activator inhibitor-1 (PAI-1), urokinase-type plasaminogen (uPA) tissue-type (tPA) after prolonged incubation times cells. LDL-induced inhibitory activity was greater than activity. kinase C (PKC) mitogen-activated (MAPK) as well bioactive TGF-β secretion PAI-1 overexpression cells abrogated by inhibition downregulation PKC administration anti-TGF-β suggesting that through induction TGF-β. Altogether, these effects on regulation synthesis/degradation might have pathophysiological function pathogenesis glomerulosclerosis.