MISC

2002年7月

Clinical significance of thymidylate synthase expression in bladder cancer

INTERNATIONAL JOURNAL OF UROLOGY
  • T Nomura
  • ,
  • M Nakagawa
  • ,
  • Y Fujita
  • ,
  • T Hanada
  • ,
  • H Mimata
  • ,
  • Y Nomura

9
7
開始ページ
368
終了ページ
376
記述言語
英語
掲載種別
DOI
10.1046/j.1442-2042.2002.00479.x
出版者・発行元
BLACKWELL PUBLISHING ASIA

Background: The purpose of the present paper was to investigage the clinical significance of thymidylate synthase (TS) expression in bladder cancer and its association with proliferation markers, such as p53, Ki-67, and proliferating cell nuclear antigen (PCNA).
Methods: Thymidylate synthase gene expression in 54 patients with bladder cancer was measured by the reverse transcription polymerase chain reaction (RT-PCR) method using glyceraldehyde-3-phosphate dehydrogenase (GAPDH) as an internal standard. The TS expression was also examined immunohistochemically. Immunohistochemical studies of p53, Ki-67, and PCNA expression were carried out to examine the correlation between TS expression and the expression of proliferation markers in the tumors. Prognostic and clinical outcome factors such as vascular invasion and distant metastasis were also examined along with TS expression.
Results: Twenty-four patients with invasive bladder cancer had TS levels of 5.07 +/- 0.77 (mean +/- SE), while 30 patients with superficial bladder cancer had TS levels of 2.28 +/- 0.38. There was a significant difference in TS levels between invasive and superficial bladder cancer (P = 0.001). There was a positive correlation between TS expression and each proliferation marker of p53 (r = 0.686, P < 0.01), Ki-67 (r = 0.715, P < 0.0001) or PCNA expressions (r = 0.670, P < 0.0001) in these patients. Patients with high TS levels (TS greater than or equal to 2.63, the median value) had significantly higher rates of vascular invasion and distant metastasis. Kaplan-Meier analysis demonstrated that patients with high TS levels (TS greater than or equal to 2.63) had unfavorable prognosis compared to patients with low TS levels (TS < 2.63; P = 0.034). Furthermore, patients with high TS staining had a significantly poorer prognosis than those with low staining (P = 0.012).
Conclusion: Determination of level of TS expression may help in the selection of an appropriate treatment for bladder cancer because TS expression influences the biological characteristic of bladder tumor.

Web of Science ® 被引用回数 : 35

リンク情報
DOI
https://doi.org/10.1046/j.1442-2042.2002.00479.x
CiNii Articles
http://ci.nii.ac.jp/naid/10009641535
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/12165018
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000177367900003&DestApp=WOS_CPL

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