title: p22phox C242T gene polymorphism and overt diabetic nephropathy: a meta-analysis of 1,452 participants.
abstract: OBJECTIVE
  The p22phox C242T gene polymorphism (rs4673) may be linked to an increased susceptibility for overt diabetic nephropathy (ODN), but the study results are still inconclusive.
  
  
  METHODS
  To explore the relationship between p22phox C242T gene polymorphism and ODN, the current meta-analysis of 707 ODN patients and 745 controls from five individual studies was conducted. The pooled odds ratio (OR) and its corresponding 95% confidence interval (CI) were evaluated by either a random or fixed effect model.
  
  
  RESULTS
  In our meta-analysis, a significant relationship between the p22phox C242T gene polymorphism and ODN was found under allelic (OR, 2.760; 95% CI, 1.400 to 5.450; p = 0.004), recessive (OR, 5.080; 95% CI, 1.020 to 25.430; p = 0.05), dominant (OR, 1.700; 95% CI, 1.167 to 2.477; p = 0.006), homozygous (OR, 3.900; 95% CI, 1.022 to 14.889; p = 0.046), heterozygous (OR, 1.523; 95% CI, 1.167 to 1.986; p = 0.002), and additive genetic models (OR, 2.019; 95% CI, 1.232 to 3.309; p = 0.005).
  
  
  CONCLUSIONS
  A positive correlation between p22phox C242T gene polymorphism and ODN risk was found. The T allele carriers of p22phox C242T gene polymorphism might be predisposed to ODN.
authors.affiliation: Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Li
authors.affiliation: Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Ge
authors.initials: G
authors.lastname: Gong
authors.affiliation: Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Geng
authors.affiliation: Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Qian
mesh_terms: D003928:Diabetic Nephropathies / Q000235:genetics*; D006801:Humans; D019255:NADPH Oxidases / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide
chemical_list: D019255:NADPH Oxidases; C086986:CYBA protein, human
keywords: C242T; Diabetes; Overt diabetic nephropathy; Polymorphism; p22-phox