title: Effects of vitamin E-coated dialyzer on oxidative stress and inflammation status in hemodialysis patients: a systematic review and meta-analysis.
abstract: BACKGROUND
  Vitamin E-coated dialyzer may have an effect on oxidative stress and inflammation status in hemodialysis (HD) patients. Therefore, we performed a systematic review to assess the anti-oxidation and anti-inflammatory effects of vitamin E-coated dialyzer in HD patients.
  
  
  METHODS
  The randomized controlled trials (RCTs) and quasi-RCTs of vitamin E-coated dialyzer versus conventional dialyzer for HD patients were searched from multiple databases. We screened relevant studies according to predefined inclusion criteria and performed meta-analyses using RevMan 5.1 software.
  
  
  RESULTS
  Meta-analysis showed vitamin E-coated dialyzer therapy could significantly decrease the serum thiobarbituric acid reacting substances (TBARS) (SMD, -0.95; 95% CI, -1.28 to -0.61; p < 0.00001), oxLDL (SMD, -0.61; 95% CI, -1.04 to -0.19; p = 0.005), interleukin-6 (IL-6) (SMD, -0.65; 95% CI, -0.97 to -0.32; p < 0.0001) and C-reactive protein (CRP) levels (SMD, -0.46; 95% CI, -0.87 to -0.05; p = 0.03) compared with that of the control group. However, vitamin E-coated dialyzer did not result in increasing the total antioxidant status (TAS) (SMD, 0.23; 95% CI, -0.16 to 0.61; p = 0.25) and the fractional clearance of urea index (Kt/v) levels (MD, -0.07; 95% CI, -0.14 to 0.00; p = 0.06), in addition, there was no significant difference in plasma superoxide dismutase (SOD) level compared with that of the conventional dialyzer & oral vitamin E group (SMD, 0.28; 95% CI, -0.20 to 0.75; p = 0.26).
  
  
  CONCLUSIONS
  Vitamin E-coated dialyzer can reduce the oxidative stress and inflammation status reflected by the decreasing of serum TBARS, oxLDL, CRP, and IL-6 levels, and this new dialyzer does not affect the dialysis adequacy.
authors.affiliation: Department of Nephrology, The Second Xiangya Hospital, Kidney Institute of Central South University , Changsha, Hunan Province , China.
authors.forename: Shi-Kun
authors.initials: SK
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Xiao
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.forename: Xiao-Xuan
authors.initials: XX
authors.lastname: Xu
authors.forename: Fu-You
authors.initials: FY
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Sun
mesh_terms: D000975:Antioxidants / Q000008:administration & dosage*; D002097:C-Reactive Protein / Q000378:metabolism; D006801:Humans; D007249:Inflammation / Q000188:drug therapy; D015850:Interleukin-6 / Q000097:blood; D007676:Kidney Failure, Chronic / Q000097:blood / Q000628:therapy*; D007688:Kidneys, Artificial; D018384:Oxidative Stress / Q000187:drug effects; D017594:Publication Bias; D016032:Randomized Controlled Trials as Topic; D006435:Renal Dialysis / Q000295:instrumentation*; D014810:Vitamin E / Q000008:administration & dosage*
chemical_list: D000975:Antioxidants; C508600:IL6 protein, human; D015850:Interleukin-6; D014810:Vitamin E; D002097:C-Reactive Protein
keywords: Hemodialysis; inflammation; oxidative stress and meta-analysis; vitamin E-coated dialyzer