Journal
DIABETES CARE
Volume 34, Issue 3, Pages 681-685Publisher
AMER DIABETES ASSOC
DOI: 10.2337/dc10-2134
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Funding
- National Institutes of Health General Clinical Research Center [M01-RR-00058]
- Greater Milwaukee Foundation
- Atlantic Philanthropies
- American Heart Association [10GRNT3880044]
- John A. Hartford Foundation
- Association of Specialty Physicians
- [1K23HL089326]
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OBJECTIVE-We evaluated the prevalence of endothelial dysfunction as measured by flow-mediated dilatation (FMD) of the brachial artery and carotid intima-media thickness (c-IMT) in relationship to vascular inflammatory biomarkers in preadolescent children with type 1 diabetes. RESEARCH DESIGN AND METHODS-We studied 21 type 1 diabetic children (aged 8.3 +/- 0.3 years with diabetes duration of 4.3 +/- 0.4 years) and 15 group-matched healthy siblings (aged 7.6 +/- 0.3 years). Fasting plasma glucose (FPG), lipid profile, HbA(1c), high-sensitivity C-reactive protein (hs-CRP), fibrinogen, homocysteine, and erythrocyte (red blood cell [RBC]) folate were evaluated in all subjects. Each subject underwent c-IMT and brachial artery FMD percentage (FMD%) measurements using high-resolution vascular ultrasound. RESULTS-Type 1 diabetic children had higher FPG (173.4 +/- 7.9 mg/dL vs. 81.40 +/- 1.7 mg/dL; P < 0.0001), HbA(1c) (8.0 +/- 0.2% vs. 5.0 +/- 0.1%; P < 0.0001), and hs-CRP (1.8 +/- 0.3 vs. 0.70 +/- 0.2; P = 0.017) than control children without significant differences in BMI, homocysteine, and fibrinogen levels; RBC folate content; and c-IMT between the groups. Children with type 1 diabetes had lower FMD% than control children (7.1 +/- 0.8% vs. 9.8 +/- 1.1%; P = 0.04), whereas c-IMT did not differ between groups. CONCLUSIONS-Preadolescent children with type 1 diabetes and mean diabetes duration of 4 years displayed evidence of low-intensity vascular inflammation and attenuated FMD measurements. These data suggest that endothelial dysfunction and systemic inflammation, known harbingers of future cardiovascular risk, are present even in preadolescent children.
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