Glycosylated hemoglobin level and carotid intimal-medial thickening in nondiabetic individuals - The atherosclerosis risk in communities study

被引:73
作者
Vitelli, LL
Shahar, E
Heiss, G
McGovern, PG
Brancati, FL
Eckfeldt, JH
Folsom, AR
机构
[1] UNIV MINNESOTA,SCH PUBL HLTH,DIV EPIDEMIOL,MINNEAPOLIS,MN 55454
[2] UNIV MINNESOTA,DEPT LAB MED & PATHOL,MINNEAPOLIS,MN 55454
[3] UNIV N CAROLINA,DEPT EPIDEMIOL,CHAPEL HILL,NC
[4] JOHNS HOPKINS MED INST,WELCH CTR PREVENT EPIDEMIOL & CLIN RES,BALTIMORE,MD 21205
关键词
D O I
10.2337/diacare.20.9.1454
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
OBJECTIVE - People with diabetes are at increased risk for cardiovascular events. However, questions remain about what role, if any, homeostatic glucose control plays in the development of cardiovascular disease among nondiabetic individuals. we investigated the relationship between HbA(1c) level and carotid intimal-medial thickening in normoglycemic individuals. RESEARCH DESIGN AND METHODS - We conducted a case-control study among 208 normoglycemic individuals (fasting glucose less than or equal to 6.4 mmol/l and no history of diabetes) who had carotid intimal-medial thickening (case subjects) and 208 normoglycemic control subjects individually matched for age, sex, race, field center, and date of exam. Subjects were free-living men and women, aged 45-64 years at baseline, who participated in the Atherosclerosis Risk in Communities (ARIC) Study. RESULTS - HbA(1c), levels, expressed as percent of total hemoglobin, ranged from 4 to 7% and correlated only modestly with single measurements of fasting glucose (r = 0.16) and fasting insulin (r = 0.14). The mean level of HbA(1c) was 5.18% among case subjects and 5.07% among control subjects (P = 0.004, paired t test). As compared with the first quartile of HbA(1c), the matched relative odds of being a case were 1.15, 1.33, and 2.30 for the second, third, and fourth quartiles, respectively (P = 0.005 for linear trend). After multivariate adjustment for age, fasting glucose, fasting insulin, BMI, smoking status, hypertension, LDL cholesterol, HDL cholesterol, fibrinogen, and education level, the respective relative odds estimates were 0.98, 1.07, and 1.88 (P = 0.16 for linear trend). When modeled linearly as a continuous variable and after adjustment for the above-mentioned covariates, a 1% point increment in HbA(1c) level was associated with 1.77 greater odds of being a case (95% CI, 0.9-3.5). CONCLUSIONS - These data provide some support to the hypothesis that in the absence of diabetes, homeostatic glycemic control is a risk factor for atherosclerosis.
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收藏
页码:1454 / 1458
页数:5
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