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Angiogenic Peptides Improve Blood Flow and Promote ...
Skip to main content Skip to article View PDF Open archive Abstract Objectives It is a common clinical observation that collateral vessel development is impaired in diabetic patients with ischaemic vascular diseases. Consequently, alternative revascularisation
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Abstract
Objectives
It is a common clinical observation that collateral vessel development is impaired in diabetic patients with ischaemic vascular diseases. Consequently, alternative revascularisation strategies in diabetic patients are needed. This study presents the effect and mechanism of new peptide therapeutic angiogenesis in an ischaemic and diabetic mouse model.
Design
Streptozocin-injected mice that had undergone hind-limb ischaemia were treated with angiogenic peptides. Blood flow restoration was calculated by laser Doppler imager and corroborated by histological section. For the mechanism study, endothelial cells were exposed to hypoxia and high glucose concentrations to study the effect of the peptides on proliferation and anti-apoptosis.
Results
The peptides significantly restored blood perfusion 21 days after surgery in the diabetic mice (p < 0.01) by neo-vascularisation, corroborated by an increase in capillary density. In addition, the peptides induced the proliferation of hypoxic endothelial cells (p < 0.01) and protected the cells from apoptosis in high glucose cultures.
Conclusions
This is the first approach for treatment of ischaemic vascular disease with peptides in a diabetic mouse model.
Keywords
Angiogenic peptides
Neo-vascularisation
Ischaemia
Diabetes
Copyright © 2010 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.