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人鼻咽不同部位粘膜上皮PCNA表达的比较研究 |
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黎众魁 姚开泰 王磊
【摘要】 目的 探讨鼻咽部肿瘤发生位置差异性的机理。 方法 应用免疫组织化学与图像分析技术对人鼻咽粘膜上皮增殖细胞核抗原(proliferating cell nuclear antigen,PCNA)的表达状况进行了比较研究。 结果 鼻咽上皮的PCNA标记指数以及PCNA阳性细胞的分布状况均随发育时期及其所处鼻咽部位置的不同而变化,成人鼻咽的顶壁和侧壁粘膜上皮具有相对较高的PCNA标记指数,与人鼻咽癌的易感部位正好形成对应关系。 结论 鼻咽部不同部位的粘膜上皮在上皮细胞群体增殖活性上存在着差异,鼻咽部肿瘤发生的位置易感性很可能与其上皮细胞群体增殖活性的差异有关。 【关键词】 增殖细胞核抗原 图像分析 免疫组织化学 人鼻咽上皮
COMPARATIVE STUDIES OF PCNA EXPRESSION AMONG MUCOSAL EPITHELIA IN DIFFERENT REGIONS OF HUMAN NASOPHARYNX
Li Zhougkui△,Yao Kaitai,Wang Lei (Cancer Research Institute,Hunan Medical University,Changsha)
【Abstract】 Objective To research the mechanism of region differences in nasopharyngeal neoplasm development.Methods The state of proliferating cell nuclear antigen(PCNA) expression in the human nasopharyngeal mucosal epithelium was investigated by means of immunohistochemical method and image analysis technique.Results The PCNA labeling index of the nasopharyngeal epithelium and the distribution of PCNA positive cells in the nasopharyngeal epithelium changed with the stages of development and the sites of the nasopharynx,and that the PCNA labeling index of the mucosal epithelia of the roof and lateral walls in the adult nasopharynx was comparatively higher than that of the others,which was consistent with the susceptible sites of nasopharyngeal carcinoma.Conclusions It suggested that the proliferating activity of epithelial cell populations among the different regions of human nasopharynx was different,and that the site susceptivity of nasopharyngeal neoplasm development might be related to the difference of the proliferating activity of epithelial cell populations. 【Key words】 PCNA; Image analysis; Immunohistochemistry;Human nasopharyngeal epithelium
人类鼻咽癌的发生不仅具有明显的种族性和地域性,而且还具有鼻咽部的位置差异性。原发性鼻咽癌最常见于鼻咽部的顶壁和侧壁[1],而鼻咽上皮鳞状化生的好发部位也正好处于鼻咽部的顶壁和侧壁[2]。这是否反映了鼻咽部的顶壁和侧壁粘膜上皮本身具有某种不同于其他部位的特殊性呢?从细胞生物学的角度来看,癌实质上是一种细胞分裂与分化异常的“细胞性&[1] [2] 下一页 上一个医学论文: 胚胎不同器官的细胞连接蛋白基因表达研究 下一个医学论文: 大鼠心脏腺苷预处理琥珀酸脱氢酶电镜细胞化学的变化
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