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위선암에서 p53 단백의 과발현과 임상 및 병리학적 예후인자와의 상관관계
서병조,유항종,이주호,주미,이혜경,김진복 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2
Objective: Mutations in the p53 gene, one of the most common genetic alterations in human cancer, are implicated in tumorigenesis and tumor progression. Wild-type p53 negatively regulates the cell cycle; a loss of function by mutation might be expected to result in enhanced proliferating activity and tumor progression. A large number of immunohistochemical studies have confirmed p53 accumulation to be a very common feature of human malignancy. The aim of the present study was to determine whether p53 status in gastric cancer is correlated statistically with various histopathological indicators or not. Methods and Materials: A total of 197 surgically resected gastric adenocarcinomas were examined to determine whether a correlation exited between immunohistochemical expressions of the p53 protein and other histopathological factors. Results: p53 overexpression was observed in 46.2% of the gastric cancers. Overexpression of p53 was correlated with vascular invasion of gastric cancer(p=0.004). In early gastric cancer, the p53 overexpression rate was 42.3%, and of them, a correlation was found between the intestinal type of the Lauren classifcation(p=0.013) and histologically differentiated gastric cancer(p=0.014). Conclusion: p53 overexpression was significantly correlated with vascular invasion of gastric cancer. In cases of early gastric cancer, p53 overexpression was correlated with Lauren classification and differentiation. These results suggest that p53 mutation plays an important role in carcinogenesis in gastric adenocarcinomas. Further study in needed to determine the correlation between p53 overexpression and the prognosis for the gastric cancer patient.
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