EGFR及VEGF在聲帶息肉中的表達(dá)
[Abstract]:Objective: To investigate the expression of epidermal growth factor receptor (EGFR) and vascular endothelial growth factor (VEGF) in normal vocal cord tissues and vocal cord polyps, and to investigate the effect of EGFR and VEGF on the pathogenesis of vocal cord polyps. Methods: 37 cases of vocal cord polyps diagnosed by pathology and excluding other vocal cord lesions were selected as the experimental group, and 11 cases of normal vocal cord tissues as the control group. The expression of EGFR and VEGF was weaker in normal vocal cords, but stronger in epithelial cells, inflammatory cells, vascular endothelial cells, glandular cells and fibroblasts in polyps of vocal cords. The mean value of EGF positive unit was higher than that of normal vocal cord group (33.5317+6.1559) and the difference was statistically significant (p0.05). There was no linear relationship between the two variables. Conclusion: 1. Vocal cord polyps were the result of multi-factor interaction. The cause is repeated vocal cord injury, causing local congestion, edema, hemorrhage, mucosal epithelial degeneration, necrosis, exfoliation, hyperplasia, inflammatory cell infiltration, vascular proliferation, dilatation. 2 Vocal cords in the long-term injury process, due to EGFR and VEGF and other related inflammatory mediators in the joint role of chronic inflammation, vascular endothelial basement membrane damage, vascular wall. Increased permeability, some of the vascular substances originally difficult to enter the tissue space through the vascular wall, resulting in vocal cord mucosa lamina propria, especially Reinke's space edema, inflammatory cell infiltration, fibrocyte proliferation, hyaline degeneration, laminar structure disappeared, polyp formation. GFR and VEGF promote the formation of polyp blood vessels, polyp blood vessels proliferation, polyps get rich blood supply and thus continue to grow. When GFR is overexpressed, it continuously transmits divisive and proliferative signals to cells, resulting in increased DNA synthesis, stimulating the sustained growth and proliferation of various cells, forming polyps.
【學(xué)位授予單位】:昆明醫(yī)科大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:R767.4
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