title: Polymorphisms of DNA repair genes XRCC1 and XPD and risk of primary open angle glaucoma (POAG).
abstract: OBJECTIVE
  Oxidative DNA damage has been shown to have some role in the development of primary open angle glaucoma (POAG). In this study, we aimed to determine the frequency of polymorphisms in two DNA repair enzyme genes, Xeroderma pigmentosum complementation group D (XPD) codon 751 and X-ray cross-complementing group 1 (XRCC1) codon 399, in a sample of Turkish patients with POAG, and to evaluate their association with POAG development.
  
  
  METHODS
  We used polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP), to analyze XRCC1-Arg399Gln and XPD -Lys751Gln polymorphisms in 144 patients with POAG and in 121 disease-free controls, who were of a similar age.
  
  
  RESULTS
  There was no significant difference in the genotype distribution between POAG patients and controls for each polymorphism (p>0.05). Allele frequencies were also not statistically different between the groups (p=0.46; OR: 0.77; 95% CI:0.42-1.43 for XRCC1 399Gln and p=0.88; OR: 0.92 95% CI: 0.50-1.67 for XPD 751Gln).
  
  
  CONCLUSIONS
  Polymorphisms in XPD codon 751 and XRCC1 codon 399 were not associated with risk of POAG in a sample of Turkish patients.
authors.affiliation: Department of Medical Biology, Cerrahpasa Faculty of Medicine, University of Istanbul, Istanbul, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Güven
authors.forename: Mustafa
authors.initials: M
authors.lastname: Unal
authors.forename: Bahadir
authors.initials: B
authors.lastname: Batar
authors.forename: Ebru
authors.initials: E
authors.lastname: Eroğlu
authors.forename: Kazim
authors.initials: K
authors.lastname: Devarnoğlu
authors.forename: Nevbahar
authors.initials: N
authors.lastname: Tamçelik
authors.forename: Didar
authors.initials: D
authors.lastname: Uçar
authors.forename: Ahmet
authors.initials: A
authors.lastname: Sarici
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D004260:DNA Repair / Q000235:genetics*; D004268:DNA-Binding Proteins / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D005902:Glaucoma, Open-Angle / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D014421:Turkey; D000076105:X-ray Repair Cross Complementing Protein 1; D051759:Xeroderma Pigmentosum Group D Protein / Q000235:genetics*
chemical_list: D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1; C000619371:XRCC1 protein, human; D051759:Xeroderma Pigmentosum Group D Protein; C497292:ERCC2 protein, human