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. 1991 May 1;88(9):3739–3743. doi: 10.1073/pnas.88.9.3739

Proliferation of smooth muscle cells after vascular injury is inhibited by an antibody against basic fibroblast growth factor.

V Lindner 1, M A Reidy 1
PMCID: PMC51528  PMID: 2023924

Abstract

Proliferation of smooth muscle cells (SMCs) represents an important event in vascular lesion formation. Despite the common belief that growth factors contribute to the development of the atherosclerotic plaque, until now there has been no direct evidence for a role of mitogens in the development of arterial lesions. Balloon catheter injury of the rat carotid artery is accompanied by death of medial SMCs and is typically followed by proliferation of SMCs with subsequent formation of an intimal lesion. Our hypothesis is that injury causes mitogens to be released from dead cells, which then stimulate cell proliferation. One such mitogen that may be important in this process is basic fibroblast growth factor (bFGF), which can be detected immunocytochemically in SMCs and endothelial cells of adult rat carotid arteries. Systemic injection of a neutralizing antibody against bFGF prior to balloon catheterization significantly decreased the induced SMC proliferation by approximately 80%. The intimal lesion that developed within 8 days after injury, however, was not significantly reduced. The results of this study support the concept that endogenous bFGF is the major mitogen controlling the growth of vascular smooth muscle cells following injury. These data may have implications for the observed failure of endarterectomy and angioplasty procedures.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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