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  • Title: Circulating vascular endothelial growth factor is unaffected by acute hyperglycemia and hyperinsulinemia in type 1 diabetes mellitus.
    Author: Dullaart RP, Oomen PH, Sluiter WJ.
    Journal: Eur J Intern Med; 2007 May; 18(3):193-5. PubMed ID: 17449390.
    Abstract:
    BACKGROUND: Circulating levels of vascular endothelial growth factor (VEGF) may predict microvascular complications in type 1 diabetes mellitus and are elevated when metabolic control is poor. We tested whether serum VEGF is influenced by prevailing glucose and insulin levels. METHODS: In 15 type 1 diabetic patients, serum VEGF, plasma von Willebrand factor antigen (vWF-Ag), and serum soluble intercellular adhesion molecule-1 (s-ICAM) levels were measured after 210 min of hyperglycemia (blood glucose target 12.0 mmol/l) and hyperinsulinemia (insulin infused at 120 mU/kg/h), alone and in combination. These were then compared with the levels obtained at the end of a 210-min normoglycemic (blood glucose target 5.0 mmol/l) standard insulin clamp (insulin infused at 30 mU/kg/h). RESULTS: VEGF (p>0.60) as well as vWF-AG (p>0.80) and s-ICAM (p>0.20) remained unchanged at the end of the three intervention periods. CONCLUSION: These findings suggest that no special precautions, in terms of concurrent measurement of glucose or timing of insulin administration, are necessary when interpreting circulating VEGF in this patient category.
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