Relationship between P-gp expression and clinical efficacy of transcatheter arterial embolization chemotherapy (TACE) in primary liver cancer and clinical significance
10.7652/jdyxb201503026
- VernacularTitle:原发性肝癌 P-糖蛋白表达与肝动脉插管栓塞化疗疗效的关系及临床意义
- Author:
Zhaoyu WU
;
Yingxing GUO
;
Jinyuan LEI
;
Haidong YU
- Publication Type:Journal Article
- Keywords:
primary liver cancer;
transcatheter arterial embolization chemotherapy (TACE);
multidrug resist-ance;
MDR1;
P-gp;
survival rate
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
2015;(3):414-417,426
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the relationship of MDR1 and its encoded product P-gp expressions with clinical efficacy of transcatheter arterial chemoembolization (TACE)in primary liver cancer and their clinical significance.Methods We selected 108 patients with primary liver cancer who came to our hospital between June 2010 and June 2013 as observation subjects.Meanwhile 50 healthy people in our hospital for liver biopsy were selected as controls.MDR1 mRNA level in observation group and control group was determined by real-time quantitative PCR.P-gp protein level was analyzed by immunohistochemistry.According to P-gp level,the 108 patients were divided into drug-resistance groups and non-resistance group;the relationship between P-gp expression level and clinical efficacy was analyzed.Results MDR1 mRNA level in liver tissues significantly enhanced in observation group compared with that in control group (P <0.05).In observation group 32 patients had the ratio of MDR1 mRNA level-normal level of more than 2 and 76 patients had the ratio of MDR1 mRNA level-normal level of less than 2. Immunohistochemistry revealed that MDR1 encoded product P-gp was brownish yellow, mainly expressed in the cell surface of liver cancer cells.There were 35 P-gp protein-negative patients (non-resistance group)and 73 positive patients (resistance group).Clinical efficacy was significantly higher in non-resistance group (74.28%)than in resistance group (43.28%)(P <0.05).The 1 year and 2-year cumulative survival rates were 54. 12% and 27.40% in resistance group and 77.14% and 42.86%% in non-resistance group.They were significantly higher in the latter group (P <0.05 ).Conclusion The overexpressed MDR1 encoded product P-gp in primary liver cancer is associated with multidrug resistance in tumor chemotherapy,suggesting that P-gp can be used as one of the guiding clinical markers of chemotherapy.
