Quercetin (purity ≥95%, high performance liquid chromatography) purchased from Sigma-Aldrich Co. (St Louis, MO, USA) was dissolved in DMSO and the dosages of Quercetin chosen were based on previous reports.23 (link),25 (link),26 (link) Commercial kits for urine albumin, urine creatinine, blood urea nitrogen, and serum creatinine were purchased from Jiancheng Biotechnology Company (Nanjing, China). Total cholesterol, triglycerides, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) kits were purchased from Shanghai Roche (Shanghai, China). Total protein extraction kit and bicinchoninic acid protein assay kit were provided by Jiangsu KeyGEN BioTECH Corp., Ltd. (Nanjing, China). Antibodies including HMGCR, LDLr, SREBP-2, SCAP, and β-actin were purchased from Santa Cruz Biotechnology, Inc. (Dallas, TX, USA). Other chemicals were of analytical grade and supplied by local reagent retailer.