Qi JP, Xu FL, Wu AP. Expression of p21WAF1 and Bax in gastrointestinal stromal tumors and its clinical significance.
Shijie Huaren Xiaohua Zazhi 2004;
12:2642-2645. [DOI:
10.11569/wcjd.v12.i11.2642]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the relationship between the expression of p21WAF1 and Bax and clinicopathologic characteristics in gastrointestinal stromal tumors (GIST), and to analyze the role of p21WAF1 and Bax in GIST.
METHODS: Immunohistochemical SP method was used to detect p21WAF1 and Bax expression in 40 cases of GIST.
RESULTS: p21WAF1 was expressed in the nucleus of 21 cases of GIST (52.5%), and Bax was expressed in the cytoplasm of 22 patients (55.0%). The expression of p21WAF1 and Bax had no significant relationship with sex, age of patients, as well as localization, size, necrosis, histological typing of GIST, but it significantly related to histological grading (χ2 = 20.217, P = 0.000 < 0.01; χ2 = 22.896, P = 0.000 < 0.01; respectively). There were higher rates of p21WAF1 and Bax expression in potential malignant and malignant GIST than those in benign one (p21WAF1: 80.0 %, 80.0% vs 6.7%, P < 0.01; Bax: 90.0%, 80.0% vs 6.7%, P < 0.01). The difference of p21WAF1 and Bax expression between potential malignancy and malignancy was not significant. There was a positive correlation between p21WAF1 and Bax expression (r = 0.448, χ2 = 8.021, P = 0.005 < 0.01, Kappa = 0.447) in GIST.
CONCLUSION: The expression of p21WAF1 and Bax plays an important role in the pathogenesis of potential malignant and malignant GIST, but not in benign GIST, which may be used as an index to differentiate benign GIST from potential malignant and malignant ones.
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