Abstract:
OBJECTIVE:To investigate the expression of thymidylate synthase (TS), a key enzyme in DNA synthesis that is over-expressed in several cancer cells, in bladder cancer and its association with patient prognosis and the response to adjuvant therapy. PATIENTS AND METHODS:In all, 67 bladder tissue specimens were obtained from patients who had undergone transurethral resection (TUR). TS expression in bladder cancer and normal bladder tissue was analysed by immunohistochemistry. RESULTS:Of the 67 bladder tissue specimens, 47 (70%) and 10 (15%) had positive expression for TS in cancer and normal tissues, respectively. TS expression was greater in patients with Grade 3 (16/17, 94%) than in Grade 1 and 2 (31/50, 64%; P = 0.002). It was also greater in Stage T1 (14/14) than in Stage Ta (33/53, 62%; P = 0.001). Furthermore, patients with negative TS expression had a longer postoperative recurrence-free survival (RFS) than those with positive expression during the 5 year follow-up (P = 0.028). In the patients with positive TS-expressing tumours, adjuvant therapy significantly improved RFS (P < 0.001). CONCLUSIONS:High TS expression might be a marker of poor prognosis for patients with bladder cancer. In addition, patients with high TS expression might also be benefit from adjuvant therapy.
journal_name
BJU Intjournal_title
BJU internationalauthors
Li Y,Li X,Dai H,Sun X,Li J,Yang F,Gu H,Yang Y,Jin Z,Chu Y,Jin X,Kakehi Y,Wu Xdoi
10.1111/j.1464-410X.2008.08099.xsubject
Has Abstractpub_date
2009-02-01 00:00:00pages
547-52issue
4eissn
1464-4096issn
1464-410Xpii
BJU8099journal_volume
103pub_type
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