Abstract
Acidic fibroblast growth factor (FGF-1) has been identified as a potent mitogen for vascular cells, inducing formation of mature blood vessels in vitro and in vivo and represents one of the most promising approaches for the treatment of ischemic cardiovascular diseases by gene therapy. Nevertheless, and most probably due to the few experimental models able to address the issue, no study has described the therapeutic effects of FGF-1 gene transfer in subjects with peripheral arterial disease (PAD) exhibiting a clinically relevant cardiovascular pathology. In order to assess the potency of FGF-1 gene transfer for therapeutic angiogenesis in ischemic skeletal muscles displaying decreased gene expression levels and sustained impaired formation of collateral vessels and arterioles, we developed a model of PAD in hamsters with a background of hypercholesterolemia. Hamsters fed a cholesterol-rich diet and subjected to hindlimb ischemia exhibit a sustained impaired angiogenic response, as evidenced by decreased angiographic score and histological quantification of arterioles in the ischemic muscles. In this model, we demonstrate that NV1FGF (a human FGF-1 expression plasmid), given intramuscularly 14 days after induction of hindlimb is...Continue Reading
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