Alteration of cyclin D1 in gastric carcinoma and its clinicopathologic significance

被引:0
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作者
Gao, Peng [1 ]
Zhou, Geng-Yin [1 ]
Liu, Yuan [2 ]
Li, Jin-Song [1 ]
Zhen, Jun-Hui [1 ]
Yuan, Yin-Ping [1 ]
机构
[1] Shandong Univ, Sch Med, Dept Pathol, Jinan 250012, Shandong, Peoples R China
[2] Shandong Univ, Qilu Hosp, Jinan 250012, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
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暂无
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
AIM: To detect the genetic alteration and abnormal expression of cyclin D1 in gastric carcinoma and investigate its clinicopathologic significance in advanced gastric carcinoma. METHODS: Proteins of cyclin D1 were detected by immunohistochemistry in 42 cases of advanced gastric carcinoma with their follow-up data available, 27 cases of early stage carcinoma, 21 cases of gastric adenoma, 22 cases of hyperplastic polyp and 20 cases of normal mucosa adjacent to adenocarcinomas. Genetic alteration of cyclin D1 was detected by Southern blot and expression of cyclin D1 mRNA was detected by PT-PCR in 42 cases of advanced gastric carcinoma. RESULTS: Cyclin D1 protein was not expressed in normal mucosa, hyperplastic polyp and gastric adenoma, while it was only positively expressed in gastric carcinoma. The expression rate of cyclin D1 protein in early stage gastric carcinoma, advanced gastric carcinoma and lymph node metastasis was 48.1%, 47.4% and 50.0%, respectively. The amplification of cyclin D1 gene was detected in 16.6% of advanced gastric carcinomas. The overexpression of cyclin D1 mRNA was detected in 40.5% of the samples. There was no significant correlation between cyclin D1 protein expression and age, lymph-node metastasis and histological grading in patients with advanced gastric carcinoma (chi(2) = 0.038,0.059,0.241, P>0.05). Significant correlation was observed between the expression of cyclin D1 protein and the 5-year survival rate (chi(2) = 3.92, P<0.05). CONCLUSION: Detection of cyclin D1 protein by immunohistochemistry may be useful in the diagnosis of early gastric carcinomas. Patients with positive expression of cyclin D1 protein tend to have a worse prognosis.
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页码:2936 / 2939
页数:4
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