摘要
目的 研究西安城区常住居民食管癌的危险因素,并探讨食管癌组织中P53的表达情况,以及诱发p53基因改变的相关因素。方法于1994年8月-1995年1月进行了病例对照研究,共调查了89例食管癌患者和97名正常人。用调查表调查了吸烟、饮酒、食管癌家族史等相关因素,并对其中65例食管癌的肿瘤组织及癌旁正常组织,以及24例对照的正常食管组织进行了免疫组化研究。统计方法采用单因素分析和多因素非条件Logistic回归模型拟合分析。结果病例对照研究发现,吸烟和食管癌家族史是西安城区食管癌的主要危险因素,OR值分别为3.26和10.48。免疫组化分析发现,有52.3%(34/65)的肿瘤组织和6.1%(4/65)的癌旁正常组织存在P53蛋白的高表达,而且P53高表达与吸烟和食管癌家族史密切相关OR值分别为3.89和17.28。结论吸烟和食管癌家族史是西安城市居民食管癌的危险因素。食管癌的发生可能是在环境因素和遗传因素的共同作用下,引起了p53基因的改变所致。
Objective To investigate the risk factors of esophageal cancer (EC) in urban areas of Xi' an , and to correlate these risk factors with overexpression of P53 in EC. Methods A hospital-based case-con- trol study was performed. All cases ( 89 ) and controls(97 ) were permanent residents in urban areas of Xi'an. Tumor tissues and normal tissues adjacent to tumors of 65 cases , and 24 available normal esophageal tissues of controls were detected by P53 overexpression via immunohistochemical method. Results Smoking and family history of EC were significantly assotiated with EC in Xi' an inhabitants. OR was 3. 26 and 10. 48 , respectively. The laboratory findings indicated that P53 positive stain in Ec was 52. 3% (34/65) and 6. 1% (4/65) in normal tissues adjacent to tumor, but no positive stain was found in normal esophageal tissues of controls. Moreover , the results showed that P53 overexpression was closely related to smoking and family history of EC. OR was 3. 89 and 17. 28 , respectively, Con- clusion These findings suggest that smoking and family history of EC are important risk factors for EC , and the alteration of P53 gene may be related to smoking and inherited factor.
出处
《中华医学杂志》
CAS
CSCD
北大核心
1996年第9期667-670,共4页
National Medical Journal of China
基金
国家自然科学基金资助项目
关键词
食管肿瘤
P53基因
分子流行病学
Esophageal neoplasms Gene , p53 Mutation Epidemiology , Molecular