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Microvascular Function in Type 2 (Non‐insulin‐dependent) Diabetes: Improved Vasodilation After One Year of Good Glycaemic Control
Author(s) -
Jaap A. J.,
Pym C. A.,
Seamark C.,
Shore A. C.,
Tooke J. E.
Publication year - 1995
Publication title -
diabetic medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.474
H-Index - 145
eISSN - 1464-5491
pISSN - 0742-3071
DOI - 10.1111/j.1464-5491.1995.tb00425.x
Subject(s) - medicine , vasodilation , type 2 diabetes , diabetes mellitus , insulin , type 1 diabetes , cardiology , endocrinology
Abnormalities of microvascular function may be important in the development of diabetic microangiopathy. The major functional abnormality identified in patients with Type 2 diabetes has been a marked limitation of microvascular vasodilation, which is present from the time of diagnosis. The effects of sustained improvements in glycaemic control on vasodilator capacity in Type 2 diabetes are unknown. Twelve Type 2 diabetic patients were studied prospectively for 1 year after diagnosis. The reduced maximum hyperaemic response to local heating of the foot skin present at the time of diagnosis remained unchanged after 3 months of improved glycaemic control (1.12 ± 0.56 V at diagnosis vs 1.21 ± 0.69 V at 3 months, mean ± SD; p = 0.25), but was improved after 1 year (1.42 ± 0.91 V; p = 0.04 vs 3 months). The percentage increase in maximum hyperaemia correlated with the percentage decrease in HbA 1c ( r s = 0.53, p = 0.04). These results suggest that the early microvascular abnormalities demonstrated in Type 2 diabetes are potentially reversible and provide a further reason for striving for optimal glycaemic control in this patient group.