title: Atorvastatin inhibits the expression of RAGE induced by advanced glycation end products on aortas in healthy Sprague-Dawley rats.
abstract: BACKGROUND
  Atorvastatin can downregulate the expression of receptor for advanced glycation end products (RAGE) in the aortas of diabetic rats. However, its effect on healthy rats remains unclear. The aim of this study was to observe the direct impact of atorvastatin on advanced glycation end products- (AGEs) induced RAGE expression in healthy Sprague Dawley (SD) rats.
  
  
  METHODS
  SD rats received AGE-BSA (20 mg/kg/day or 40 mg/kg/day), dual treatment (AGE-BSA 40 mg/kg/day and atorvastatin 20 mg/kg/day) or no treatment for 12 and 24 weeks, respectively. The deposition of AGEs and expression of RAGE in the animals' aortas were assessed by Quantitative RT-PCR, immunohistochemistry, and western-blot tests. Serum levels of AGEs were measured using ELISA.
  
  
  RESULTS
  AGE-BSA upregulated the serum level of AGEs, deposition of AGEs, and expression of RAGE in aortas in a time- and dose-dependent way that can accelerate the development and progression of atherosclerosis. These upregulations could be significantly attenuated by atorvastatin in the absence of its lipid-lowering effects. These data provide further evidence for the novo mechanism of atorvastatin's pleiotropic effect.
  
  
  CONCLUSIONS
  Atorvastatin has a direct inhibitory effect on AGEs-RAGE expression in healthy SD rats. These potential pleiotropic vasculoprotective effects are independent of effects on glucose and lipid control.
authors.affiliation: Department of Endocriology and Metabolic Disease, East Hospital, Tongji University School of Medicine, Shanghai, 200120 China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xu
authors.affiliation: Department of Endocriology, Shanghai Ninth People's Hospital Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, 200120 China.
authors.forename: Panpan
authors.initials: P
authors.lastname: Zang
authors.affiliation: Department of Endocriology and Metabolic Disease, East Hospital, Tongji University School of Medicine, Shanghai, 200120 China.
authors.forename: Bo
authors.initials: B
authors.lastname: Feng
authors.affiliation: Department of Endocriology, Shanghai Zhoupu Hospital, Shanghai, 200120 China.
authors.forename: Qiaohui
authors.initials: Q
authors.lastname: Qian
keywords: AGEs; Atherosclerosis; Atorvastatin; RAGE