Journal
DIABETES CARE
Volume 34, Issue 12, Pages 2594-2596Publisher
AMER DIABETES ASSOC
DOI: 10.2337/dc11-1620
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Funding
- Research Committee at Copenhagen University Hospital, Rigshospitalet (Rigshospitalets Forskningsudvalg)
- Danish Medical Research Council
- Aase and Ejnar Danielsen Foundation
- P. Carl Petersen Foundation
- Augustinus Foundation
- Lundbeck Foundation
- Danish Research Foundation for General Practice
- Health Insurance Foundation
- Danish Ministry of Health
- Novo Nordisk Farmaka Denmark Ltd.
- A.P. Moller Foundation for the Advancement of Medical Science
- Pharmacy Foundation
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OBJECTIVE-We analyzed data from a cohort of 1,381 newly diagnosed type 2 diabetic patients to test the hypothesis that urinary markers of nucleic acid oxidation are independent predictors of mortality. RESEARCH DESIGN AND METHODS-We examined the relationship between urinary excretion of markers of DNA oxidation (8-oxo-7,8-dihydro-2'-deoxyguanosine [8-oxodG]) and RNA oxidation (8-oxo-7,8-dihydroguanosine [8-oxoGuol) and long-term mortality using Cox proportional hazards regression. RESULTS-After multivariate adjustment, the hazard ratios for all-cause and diabetes-related mortality of patients with 8-oxoGuo levels in the highest quartile compared with those in the lowest quartile were 1.44(1.12-1.85) and 1.54(1.13-2.10), respectively. Conversely, no significant associations between 8-oxodG and mortality were found in the adjusted analyses. CONCLUSIONS-Urinary excretion of the RNA oxidation marker 8-oxoGuo measured shortly after diagnosis of type 2 diabetes predicts long-term mortality independently of conventional risk factors. This finding suggests that 8-oxoGuo could serve as a new clinical biomarker in diabetes.
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