Chen CY, Zhu ZH. Relationship between expression of P-glycoprotein and efficacy of chemotherapy in gastric cancer.
Shijie Huaren Xiaohua Zazhi 2003;
11:36-38. [DOI:
10.11569/wcjd.v11.i1.36]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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 significance of the expression of P-glycoprotein and the relationship between its expression and the efficacy of chemotherapy in patients with gastric cancer.
METHODS: P-glycoprotein was examined by immunohistochemical staining in 101 specimens of paraffin embedded gastric cancer tissues.
RESULTS: The expression rates of P-glycoprotein in normal gastric mucosa, paracancerous tissues and gastric cancer tissues were 13%, 22% and 43%, respectively (P < 0.05). The expression rates of P-glycoprotein in the highly and moderately differentiated tumors (58% and 80%, respectively) were significantly higher than those in the lowly and poorly differentiated tumors (36% and 25%, respectively) (P < 0.01). The postoperative cumulative survival rate of the patients receiving chemotherapy was significantly higher than that of the patients without chemotherapy in P-glycoprotein-negative patients with gastric cancer (P < 0.01).
CONCLUSION: The expression of P-glycoprotein was correlated with the degree of tumor differentiation and influenced the efficacy of postoperative chemotherapy.
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