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Impact of acute hyperglycaemia on endothelial function and retinal vascular reactivity in patients with Type 2 diabetes

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Chittari, Madhu Varma, McTernan, P. G. (Philip G.), Bawazeer, Nahla M., Constantinides, K., Ciotola, M., O'Hare, J. Paul, Kumar, Sudhesh and Ceriello, Antonio (2011) Impact of acute hyperglycaemia on endothelial function and retinal vascular reactivity in patients with Type 2 diabetes. Diabetic Medicine, Volume 28 (Number 4). pp. 450-454. doi:10.1111/j.1464-5491.2010.03223.x

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Official URL: http://dx.doi.org/10.1111/j.1464-5491.2010.03223.x

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Abstract

In diabetes, endothelial dysfunction and an altered retinal blood flow have been reported and precede overt macrovascular and microvascular disease. Furthermore, an association between postprandial hyperglycaemia, retinopathy and cardiovascular disease has been observed.

Methods:

Endothelial function and retinal vascular reactivity have been measured in baseline conditions in 10 healthy control subjects and 21 patients with Type 2 diabetes. In the patients with Type 2 diabetes, endothelial function and retinal vascular reactivity have been also measured every hour, for 4 h, during an oral glucose tolerance test. Endothelial function has been evaluated by measuring flow-mediated vasodilation of the brachial artery, while retinal vascular reactivity has been measured using a retinal vessel analyser, during a flicker.

Results:

At 1 and 2 h after glucose ingestion, endothelial function decreased (P < 0.05), while retinal vascular reactivity increased, even at 3 h (P < 0.05), vs. the baseline values.

Conclusion :

Our data highlight that acute hyperglycaemia impacts on endothelial function simultaneously at both macrovascular and at microvascular levels, inducing functional change, which could contribute towards explaining the clinical evidence of a strong association between postprandial hyperglycaemia, cardiovascular disease and retinopathy.

Item Type: Journal Article
Subjects: R Medicine > RC Internal medicine
Divisions: Faculty of Medicine > Warwick Medical School > Biomedical Sciences > Translational & Experimental Medicine > Metabolic and Vascular Health (- until July 2016)
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Hyperglycemia -- Pathophysiology, Vascular endothelium, Non-insulin-dependent diabetes -- Treatment, Retina -- Blood-vessels
Journal or Publication Title: Diabetic Medicine
Publisher: Blackwell
ISSN: 0742-3071
Official Date: April 2011
Dates:
DateEvent
April 2011Published
Volume: Volume 28
Number: Number 4
Page Range: pp. 450-454
DOI: 10.1111/j.1464-5491.2010.03223.x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: BMI Fellowship

Data sourced from Thomson Reuters' Web of Knowledge

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