摘要
目的了解凋亡基因PDCD5在正常肾、肾透明细胞癌组织及正常膀胱、膀胱癌组织中的表达,分析PDCD5在肾透明细胞癌、膀胱癌的发病中所起的作用。方法采用免疫组织化学的方法,对63例肾组织切片和42例膀胱组织切片进行PDCD5的免疫组化染色。采用人工阅片评分及计算机辅助染色强度判定2种方法判断肾组织PDCD5的染色阳性率及染色强度,用单因素方差分析法及列联表的卡方检验和关联度测量判断PDCD5的表达与正常肾、肾透明细胞癌组织的相关性;采用人工阅片判断膀胱组织PDCD5的染色阳性率。结果免疫组织化学的结果显示,在正常肾组织肾小管区中,PDCD5表达多呈强阳性,肾透明细胞癌组织表达随着分期的增加呈递减趋势。正常肾组织及各期肾透明细胞癌组织中PDCD5表达的差异有统计学意义。正常膀胱、膀胱癌组织中PDCD5无显著表达。结论PDCD5可能在不同程度上参与了肾透明细胞癌进程中的调控;PDCD5在正常膀胱、膀胱癌组织中表达程度极低。
Objective To detect the expression ofapoptosis gene PDCD5 in tissues of normal human kidney, renal clear cell carcinoma, normal bladder and bladder carcinoma, and explore the role of PDCD5 gene in renal clear cell carcinoma and bladder carcinoma. Methods Indirect immunohistochemistry was employed to detect PDCD5 expression in 63 kidney specimens and 42 bladder specimens. Positive expression rates and intensity of PDCD5 protein expression in the kidney tissue were investigated microscopically and by computerized image analysis. Positive expression rate in the bladder tissue was investigated by microscopic observation. Results The results of immunohistochemical staining showed PDCD5 protein overexpression in the renal tubule of normal human kidney tissues and downregulation with the stage increase of renal clear cell carcinoma. PDCD5 protein expression showed statistical significance in tissues of normal kidney and renal clear cell carcinoma in all stages. No obvious PDCD5 expression was detected in the tissues of normal human bladder and bladder carcinoma. Conclusion PDCD5 is an important apoptosis-regnlating factor in the occurrence of renal clear cell carcinoma, and its expression is extremely low in tissues of normal human bladder and bladder carcinoma.
出处
《南方医科大学学报》
CAS
CSCD
北大核心
2006年第6期805-809,共5页
Journal of Southern Medical University
基金
南方医院院长基金(20050006)~~
