三种基质金属蛋白酶在鼻息肉组织中的表达

目的 探讨三种基质金属蛋白酶（ｍａｔｒｉｘ ｅｍｔａｌｌｏｐｒｏｔｅｉｎａｓｅｓ，ＭＭＰｓ）与鼻息肉发病的关系。方法 采用免疫组化法对ＭＭＰｓ成员中ＭＭＰ２、ＭＭＰ９及ＭＭＰ３在３２例鼻息肉组织中的表达进行研究。结果 正常鼻粘膜未见有三者的表达，鼻息肉组织中ＭＭＰｓ阳性细胞主要位于基底膜附近的细胞。上皮细胞、血液细胞及浸润的炎细胞表达ＭＭＰ９；成纤维细胞、浸润的炎细胞和上皮细胞表达ＭＭＰ２；少部分

The significance of matrix metalloproteinases expression in nasal polyps]

OBJECTIVE: To explore the role of matrix metalloproteinases (MMPs) in nasal polyp formation. METHODS: The expression of MMP9, MMP2 and MMP3 was studied in 32 nasal polyps by immunohistochemical method. RESULTS: MMPs could not be detected in all samples of normal mucosa. In nasal polyp tissue, MMP9 was observed epithelial in cells, inflammatory cell and blood cells, MMP2 was detected in fibroblasts, epithelial cells and inflammatory cells, and MMP3 was detected in inflammatory cells and epithelial cells. Compare to normal mucosa, MMP9, MMP2 and MMP3 was over expressed in their positive cells of polyp. The expression of MMP9 was higher than that of MMP2 and MMP3 in nasal polyp tissue (P < 0.01). CONCLUSION: MMP9, MMP2 and MMP3 were strongly correlated with nasal polyp formation. They cause pathological changes in nasal mucosa and MMP9 may play the most important role among them.