Journal
DIABETES CARE
Volume 26, Issue 5, Pages 1535-1539Publisher
AMER DIABETES ASSOC
DOI: 10.2337/diacare.26.5.1535
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- PHS HHS [1D12HP00023-01] Funding Source: Medline
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Objective - Recent evidence suggests that poor glycemic control is significantly associated with the development of macrovascular complications of diabetes. Studies have indicated that C-reactive protein (CRP) is an important risk factor for cardiovascular disease. The purpose, of this study was to determine the relation between CRP and HbA(lc) in a large national sample of individuals with diabetes. Research Design and Methods - A nationally representative sample of non-institutionalized U.S. adults aged 17 years and over with nongestational diabetes was derived from the National Health and Nutrition Examination Survey III (1988-1994) (n = 1,018). Respondents with diabetes were stratified by HbA(lc) level. The main outcome measure was elevated (>0.30 mg/dl) CRP. Results - In unadjusted analyses, respondents with diabetes who had elevated HbA(lc) levels (greater than or equal to9.0%) had a significantly higher percent of elevated CRP than people with low (<7%) HbA(lc) levels (P < 0.001). In adjusted regression analysis, after controlling for age, race, sex, smoking, length of time with diabetes, insulin, and BMI, HbA(lc) was significantly associated with an increased likelihood of elevated CRP for HbA(lc) >9.0% (OR 2.15, 95% CI 1.07-4.32) and for HbA(lc) > 11.0% (4.40, 1.87-10.38). Higher HbA(lc) also predicted elevated CRP in the regression model when HbA(lc) was analyzed as a continuous variable (1.20, 1.07-1.34). Conclusions - In this study, the likelihood of elevated CRP concentrations increased with increasing HbA(lc) levels. These findings suggest an association between glycemic control and systemic inflammation in people with established diabetes.
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