Journal
DIABETES CARE
Volume 33, Issue 5, Pages 1037-1043Publisher
AMER DIABETES ASSOC
DOI: 10.2337/dc09-1778
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Funding
- German Federal Ministry of Education and Research [01ZZ96030, 01ZZ0701]
- Ministry for Education, Research, and Cultural Affairs
- Ministry for Social Affairs of the Federal State of Mecklenburg-West Pomerania
- National Institutes of Health [K99-DE-018739, R01-DE-13094, T32-HL-07779]
- French Agency for Research
- Institut National de la Sante et de la Recherche Medicale [R05115DD]
- Mayo Chair Endowment, School of Public Health, University of Minnesota
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OBJECTIVE - Infection may be a type 2 diabetes risk factor. Periodontal disease is a chronic infection. We hypothesized that periodontal disease was related to A1C progression in diabetes-free participants. RESEARCH DESIGN AND METHODS - The Study of Health in Pomerania (SHIP) is a population-based cohort in Germany including 2,973 diabetes-free participants (53% women; aged 20-81 years). Participants were categorized into four groups according to increasing baseline periodontal disease levels (percentage of sites per mouth with attachment loss >= 5 mm, determined a priori); sample sizes for each respective category were 1,122, 488, 463, and 479 (241 participants were edentulous). Mean absolute changes (year 5 minus baseline) in A1C (Delta A1C) were regressed across periodontal categories while adjusting for confounders (e.g., age, sex, smoking, obesity, physical activity, and family history). RESULTS - Across baseline periodontal disease categories, Delta A1C +/- SEM values were 0.023 +/- 0.02, 0.023 +/- 0.02, 0.065 +/- 0.03, and 0.106 +/- 0.03 (P-trend = 0.02), yielding an approximate fivefold increase in the absolute difference in Delta A1C when dentate participants in the highest versus lowest periodontal disease category were compared; these results were markedly stronger among participants with high-sensitivity C-reactive protein >= 1.0 mg/l (P-interaction = 0.01). When individuals who had neither baseline periodontal disease nor deterioration in periodontal status at 5 years were compared with individuals with both poor baseline periodontal health and longitudinal periodontal deterioration, mean Delta A1C values were 0.005 vs. 0.143% (P = 0.003). CONCLUSIONS - Periodontal disease was associated with 5-year A1C progression, which was similar to that observed for a 2-SD increase in either waist-to-hip ratio or age in this population.
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