Angiogenic peptides improve blood flow and promote capillary growth in a diabetic and ischaemic mouse model

A. Raiter, Z. Bechor, M. Kleiman, D. Leshem-Lev, A. Battler, B. Hardy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

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.

Original languageEnglish
Pages (from-to)381-388
Number of pages8
JournalEuropean Journal of Vascular and Endovascular Surgery
Volume40
Issue number3
DOIs
StatePublished - Sep 2010
Externally publishedYes

Funding

FundersFunder number
Colton Family Next Generation Technology

    Keywords

    • Angiogenic peptides
    • Diabetes
    • Ischaemia
    • Neo-vascularisation

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