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The effect of injected RGD modified alginate on angiogenesis and left ventricular function in a chronic rat infarct model

Paper ID Volume ID Publish Year Pages File Format Full-Text
9417 629 2009 6 PDF Available
Title
The effect of injected RGD modified alginate on angiogenesis and left ventricular function in a chronic rat infarct model
Abstract

Congestive heart failure (CHF) is a chronic disease with a high mortality rate. Managing CHF patients has been one of the most severe health care problems for years. Scaffold materials have been predominantly investigated in acute myocardial infarction (MI) studies and have shown promising improvement in LV function. In this study we examined whether surface modification of a biomaterial can influence the myocardial microenvironment and improve myocardial function in a rodent model of ischemic cardiomyopathy. In vitro cell culture and in vivo rat studies were performed. RGD peptides conjugated to alginate improved human umbilical vein endothelial cell (HUVEC) proliferation and adhesion when compared to a non-modified alginate group. Injection of the alginate hydrogel into the infarct area of rats 5 weeks post-MI demonstrated that both modified and non-modified alginate improve heart function, while LV function in the control group deteriorated. Both the RGD modified alginate and non-modified alginate increased the arteriole density compared to control, with the RGD modified alginate having the greatest angiogenic response. These results suggest that in situ use of modified polymers may influence the tissue microenvironment and serve as a potential therapeutic agent for patients with chronic heart failure.

Keywords
Alginate; RGD peptides; Hydrogel; Myocardial infarction
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The effect of injected RGD modified alginate on angiogenesis and left ventricular function in a chronic rat infarct model
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 30, Issue 5, February 2009, Pages 751–756
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us