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Lee HT, Lin CS, Lee CS, Tsai CY, Wei YH. The role of hOGG1 C1245G polymorphism in the susceptibility to lupus nephritis and modulation of the plasma 8-OHdG in patients with systemic lupus erythematosus. Int J Mol Sci 2015; 16:3757-68. [PMID: 25671815 PMCID: PMC4346924 DOI: 10.3390/ijms16023757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 01/29/2015] [Indexed: 01/08/2023] Open
Abstract
We investigated whether the C1245G polymorphism of human 8-oxoguanine glycosylase 1 (hOGG1) gene confers the susceptibility to systemic lupus erythematosus (SLE) occurrence of lupus nephritis and affects the plasma level of 8-hydroxy-2'-deoxyguanosine (8-OHdG) in patients with SLE. A total of 45 healthy controls and 85 SLE patients were recruited. The C1245G polymorphism of the hOGG1 gene was determined by direct sequencing. The frequency of occurrence of the hOGG1 1245 GG genotype in SLE patients was 31.8% (27/85), which is lower than that of healthy controls of 53.3% (24/45). Thirty-three (33/85, 38.8%) SLE patients developed lupus nephritis. Significantly, SLE patients harboring the hOGG1 1245 GG genotype had a higher incidence to develop lupus nephritis than did those harboring the hOGG1 1245 CC or CG genotype (15/27, 55.6% vs.18/58, 31.0%, p = 0.031). Divided into subgroups, SLE patients harboring the hOGG1 1245 GG genotype had the highest plasma levels of 8-OHdG among patients with all genotypes, with regard to the coexistence of lupus nephritis (p = 0.020, ANOVA), including those with nephritis harboring the hOGG1 1245 CC or CG genotypes (p = 0.037), those without nephritis harboring the hOGG1 1245 GG genotype (p = 0.050), and those without nephritis harboring the hOGG1 1245 CC or CG genotype (p = 0.054). We conclude that the C1245G polymorphism of hOGG1 may be one of the factors that confer the susceptibility to lupus nephritis and modulate the plasma level of 8-OHdG in patients with SLE.
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Affiliation(s)
- Hui-Ting Lee
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan.
| | - Chen-Sung Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Division of Thoracic Surgery, Taipei Hospital, Ministry of Health and Welfare, New Taipei City 242, Taiwan.
| | - Chyou-Shen Lee
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan.
- Mackay Junior College of Medicine, Nursing, and Management, New Taipei City 252, Taiwan.
| | - Chang-Youh Tsai
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan.
| | - Yau-Huei Wei
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan.
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Association of base excision repair gene polymorphisms with ESRD risk in a Chinese population. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:928421. [PMID: 22720119 PMCID: PMC3375099 DOI: 10.1155/2012/928421] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/06/2012] [Accepted: 04/06/2012] [Indexed: 11/25/2022]
Abstract
The base excision repair (BER) pathway, containing OGG1, MTH1 and MUTYH, is a major protector from oxidative DNA damage in humans, while 8-oxoguanine (8-OHdG), an index of DNA oxidation, is increased in maintenance hemodialysis (HD) patients. Four polymorphisms of BER genes, OGG1 c.977C > G (rs1052133), MTH1 c.247G > A (rs4866), MUTYH c.972G > C (rs3219489), and AluYb8MUTYH (rs10527342), were examined in 337 HD patients and 404 healthy controls. And the 8-OHdG levels in leukocyte DNA were examined in 116 HD patients. The distribution of MUTYH c.972 GG or AluYb8MUTYH differed between the two groups and was associated with a moderately increased risk for end-stage renal disease (ESRD) (P = 0.013 and 0.034, resp.). The average 8-OHdG/106 dG value was significantly higher in patients with the OGG1 c.977G, MUTYH c.972G or AluYb8MUTYH alleles (P < 0.001 via ANOVA). Further analysis showed that combination of MUTYH c.972GG with OGG1 c.977GG or AluYb8MUTYH increased both the risk for ESRD and leukocyte DNA 8-OHdG levels in HD patients. Our study showed that MUTYH c.972GG, AluYb8MUTYH, and combination of OGG1 c.977GG increased the risk for ESRD development in China and suggested that DNA oxidative damage might be involved in such process.
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