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Author:

Lu, D. (Lu, D..) | Shi, H-C. (Shi, H-C..) | Wang, Z-X. (Wang, Z-X..) | Gu, X-W. (Gu, X-W..) | Zeng, Y. J. (Zeng, Y. J..)

Indexed by:

SCIE

Abstract:

This study aims to investigate the expression of P-glycoprotein (PGP), glutathione S-transferase pi (GST-pi), DNA topoisomerase H (Topo-II) and lung resistance-related protein (LRP) in ovarian carcinoma, thus providing better chemotherapy choice and post-operative prognosis for ovarian carcinoma patients. A total of 80 primary ovarian carcinoma, 16 benign ovarian epithelial neoplasm, and 12 normal ovarian tissue samples were collected. Immunohistochemistry was used to detect the expression of PGP, GST-pi, Topo-II and LRP, and the results were analysed by correlation with clinicopathological parameters. Positive expression rates of PGP, GST-pi, Topo-II and LRP in patients with ovarian carcinoma (57.5%, 58.8%, 76.3% and 73.8%, respectively) were all higher than those found in normal and benign tissue (P<0.05). In clinical stages I/II vs. III/IV, the expression rates of PGP, GST-pi, Topo-II and LRP were 40.7% vs. 66% (P<0.05), 40.7% vs. 67.9% (P<0.05), 66.7% vs. 81.1% (P>0.05) and 55.6% vs. 83.0% (P<0.05), respectively. Carcinoma differentiation ranged from well to poor, and expression levels of each marker were as follows: PGP, 57.9%, 62.1% and 53.1% (P>0.05); GST-pi, 36.8%, 55.2% and 75.0% (P<0.05); Topo-H, 52.6%, 79.3% and 87.5% (P<0.05); and LRP, 84.2%, 69.0% and 71.9% (P>0.05). Ovarian carcinoma patients with PGP-, GST-pi-, Topo-II- and LRP-positive expression had a shorter median survival time than those who were negative for these markers (PGP: 36 months vs. 48 months [P=0.0017]; GST-pi: 36 months vs. 41 months [P=0.0103]; Topo-II: 37 months vs. 39 months [P=0.3811]; LRP: 37 months vs. 55 months [P=0.002]). COX regression analysis demonstrated that the clinical stage of the tumour, and the expression of PGP, GST-pi or LRP, may influence patient survival time after surgery. The relative death risk for patients with clinical stage hilly tumours increased, 9.46-fold compared to those with stage I/II tumours. The relative death risk in the PGP-, GST-pi- and LRP-positive groups increased by 2.049-, 2.452- or 2.609-fold, respectively, compared with the corresponding negative groups. PGP, GST-pi, Topo-II and LRP are all expressed in primary ovarian carcinoma, indicating the presence of multidrug resistance in this disease. Combined evaluation of PGP, GST-pi, Topo-II and LRP expression may enable better chemotherapeutic choice and provide an accurate prognosis for ovarian carcinoma patients.

Keyword:

Lung resistance-related protein Prognosis Ovarian neoplasms Glutathione S-transferase pi Drug resistance, multiple P-Glycoprotein DNA topoisomerase, type II

Author Community:

  • [ 1 ] [Lu, D.]Yangzhou Univ, Clin Coll, Dept Obstet & Gynaecol, Yangzhou 225001, Jiangsu Prov, Peoples R China
  • [ 2 ] [Shi, H-C.]Yangzhou Univ, Clin Coll, Dept Obstet & Gynaecol, Yangzhou 225001, Jiangsu Prov, Peoples R China
  • [ 3 ] [Wang, Z-X.]Yangzhou Univ, Clin Coll, Dept Obstet & Gynaecol, Yangzhou 225001, Jiangsu Prov, Peoples R China
  • [ 4 ] [Gu, X-W.]Yangzhou Univ, Clin Coll, Dept Obstet & Gynaecol, Yangzhou 225001, Jiangsu Prov, Peoples R China
  • [ 5 ] [Zeng, Y. J.]Beijing Univ Technol, Ctr Biomed Engn, Beijing 100022, Peoples R China

Reprint Author's Address:

  • [Lu, D.]Yangzhou Univ, Clin Coll, Dept Obstet & Gynaecol, Yangzhou 225001, Jiangsu Prov, Peoples R China

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Source :

BRITISH JOURNAL OF BIOMEDICAL SCIENCE

ISSN: 0967-4845

Year: 2011

Issue: 2

Volume: 68

Page: 69-74

1 . 9 0 0

JCR@2022

ESI Discipline: CLINICAL MEDICINE;

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 33

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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