The Angiogenic Peptide Vascular Endothelial Growth Factor–Basic Fibroblast Growth Factor Signaling is Up-Regulated in a Rat Pressure Ulcer Model
Article first published online: 6 JUN 2013
Copyright © 2013 Wiley Periodicals, Inc.
The Anatomical Record
Volume 296, Issue 8, pages 1161–1168, August 2013
How to Cite
Yang, J.-J., Wang, X.-L., Shi, B.-W. and Huang, F. (2013), The Angiogenic Peptide Vascular Endothelial Growth Factor–Basic Fibroblast Growth Factor Signaling is Up-Regulated in a Rat Pressure Ulcer Model. Anat Rec, 296: 1161–1168. doi: 10.1002/ar.22676
- Issue published online: 13 JUL 2013
- Article first published online: 6 JUN 2013
- Manuscript Accepted: 15 JAN 2013
- Manuscript Received: 11 AUG 2012
- Zhejiang Natural Science Foundation. Grant Number: Y2111061
- pressure ulcer;
- magnetic disk circulating compression;
The purpose of this study is to investigate the mRNA and protein expression levels of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) in pressure ulcers, and to elucidate the molecular mechanism by which VEGF and bFGF are involved in pressure ulcer formation. A rat model of ischemia-reperfusion pressure ulcer was established by magnetic disk circulating compression method. Real-time fluorescence quantitative PCR and Western blot assays were conducted to detect the mRNA and protein expression of VEGF and bFGF in the tissues of rat I-, II-, and III-degree pressure ulcers, the surrounding tissues, and normal skin. Our study confirmed that the mRNA and protein expression levels of VEGF and bFGF in the tissues of rat I-degree pressure ulcer were significantly higher than that in the II- and III-degree pressure ulcer tissues (P < 0.05). The expression of VEGF and bFGF in the tissues surrounding I- and II-degree pressure ulcers were higher than the rats with normal skin. The expression of VEGF and bFGF in the tissues of rat III-degree pressure ulcer was lower than that in the surrounding tissues and normal skin (P < 0.05). There was a significant positive correlation between change in the VEGF and bFGF. The results showed that with an increase in the degree of pressure ulcers, the expression of VEGF and bFGF in pressure ulcers tissue are decreased. This leads to a reduction in angiogenesis and may be a crucial factor in the formation of pressure ulcers. Anat Rec, 2013. © 2013 Wiley Periodicals, Inc.