PMID- 19317061 OWN - NLM STAT- MEDLINE DCOM- 20110128 LR - 20090325 IS - 1000-503X (Print) IS - 1000-503X (Linking) VI - 31 IP - 1 DP - 2009 Feb TI - [Effects of very low-density lipoprotein on cellular lipid accumulation and the expression of monocyte chemoattractant protein-1 in human mesangial cells]. PG - 55-9 AB - OBJECTIVE: To investigate the effects of very low-density lipoprotein (VLDL) on cellular lipid accumulation and the expression of monocyte chemoattractant protein-1 (MCP-1) in human mesangial cells. METHODS: An established stable human mesangial cell line (HMCL) was used in all experiments. VLDL-induced cellular lipid deposition was visualized by Oil Red O staining and analyzed quantitatively by standard enzymatic procedures. MCP-1 mRNA and protein expression levels in treated HMCLs were determined by real-time quantitative RT-PCR and enzyme-linked immunosorbent assay, respectively. For adhesion study, HMCLs were treated with VLDL for 12 hours, followed by a one-hour incubation with THP-1 cells. RESULTS: VLDL induced cellular lipid accumulation in HMCLs in a time- (0-24 h) and dose- (0-200 microg/ml) dependent manner, and the principal component of accumulated lipid is triglyceride. In HMCLs, MCP-1 mRNA expression was promoted by VLDL in a time- (0-6 h) and dose- (0-100 microg/ml) dependent manner, and VLDL also enhanced MCP-1 secretion in a dose-dependent manner. Such an effect was accompanied by increased adhesion of monocytes to HMCLs. CONCLUSIONS: VLDL can induce cellular triglyceride accumulation and upregulate the expression of MCP-1 in human mesangial cells. Hence, VLDL may be involved in the pathogenesis of lipid-mediated renal injury. FAU - Li, Jing AU - Li J AD - Department of Nephrology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China. FAU - Li, Hang AU - Li H FAU - Wen, Yu-Bing AU - Wen YB FAU - Li, Xue-Wang AU - Li XW LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhongguo Yi Xue Ke Xue Yuan Xue Bao JT - Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae JID - 8006230 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Lipoproteins, VLDL) RN - 0 (RNA, Messenger) RN - 0 (Triglycerides) SB - IM MH - Cell Line MH - Chemokine CCL2/genetics/*metabolism MH - Humans MH - Lipoproteins, VLDL/pharmacology/*toxicity MH - Mesangial Cells/cytology/*metabolism MH - RNA, Messenger/genetics/metabolism MH - Triglycerides/*metabolism EDAT- 2009/03/26 09:00 MHDA- 2011/02/01 06:00 CRDT- 2009/03/26 09:00 PHST- 2009/03/26 09:00 [entrez] PHST- 2009/03/26 09:00 [pubmed] PHST- 2011/02/01 06:00 [medline] PST - ppublish SO - Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2009 Feb;31(1):55-9.