The expression and significance of keratinocyte growth factor in the regulation of cholesteatoma growth / 中国耳鼻咽喉头颈外科

ABSTRACT

OBJECTIVE To investigate the expression of keratinocyte growth factor(KGF)in middle ear cholesteatoma and to explore the role of KGF on the hyperproliferation of the cholesteatoma epithelium and the formation and development of cholesteatoma. METHODS The specimens from the cholesteatoma tissue of 20 cases and the corresponding normal external ear skin were examined by immunohistochemical S-P method and quantitative analysis. RESULTS In normal ear skin only stroma staining for KGF was positive. In cholesteatoma epithelium staining for KGF was strongly positive and the stroma staining was stronger than that of normal ear skin. The positive rates of the cholesteatoma and normal external ear skin revealed a significant difference. There was a positive correlation between cholesteatoma epithelium staining for KGF and for Ki67 and the coefflcient of correlation was 0.609(P﹤0.01). CONCLUSION There was correlation between the expression of KGF or Ki67 and the ability of reproduction of middle ear cholesteatoma. Local inflammation might promote hyperproliferation of the epithelium of cholesteatoma by regulating the expression of KGF. It suggested that an autocrine stimulation of KGF correlate with the occurrence and development of cholesteatoma .