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  • Title: The polymorphism -863C/A in tumour necrosis factor-alpha gene contributes an independent association to gout.
    Author: Chang SJ, Tsai PC, Chen CJ, Lai HM, Ko YC.
    Journal: Rheumatology (Oxford); 2007 Nov; 46(11):1662-6. PubMed ID: 17938134.
    Abstract:
    OBJECTIVE: To investigate the associations between polymorphisms in the promoter of the tumour necrosis factor-alpha (TNF-alpha) gene and gout. METHODS: The polymorphisms -308G/A and -863C/A in the TNF-alpha gene were determined in 106 gout patients and 159 healthy controls among male Taiwanese using the Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method. The biochemical markers, including Glutamic-oxaloacetic transaminase (GOT), Glutamic-pyruvic transaminase (GPT), uric acid, creatinine, total cholesterol (TC), triglycerides (TG), body mass index (BMI) and hypertension, as well as alcohol consumption were measured. RESULTS: The gout patients had 9.43% (10/106) with genotype AA at polymorphism -863C/A showing a significantly higher fraction than controls (0.63%; 1/159, P < 0.001). The crude results also showed that the gout patients had significantly higher portions of abnormal GOT, GPT, creatinine, TC, TG, alcohol consumption, hypertension and hyperuricaemia than controls (P < 0.05), but the -308G/A, BMI and genotype CA at -863C/A did not show the same significant difference (P > 0.05). After adjustment by a stepwise logistic regression method, the hyperuricaemia, creatinine, GPT, TG and alcohol consumption as well as genotype AA at polymorphism -863C/A were found to be significantly associated with gout. CONCLUSION: The genotype AA at polymorphism -863C/A in a recessive model showed a significant association with developing gout independent of hyperuricaemia, abnormal creatinine, higher TG, GPT and alcohol consumption.
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