Abstract:
:The aim of this study was to assess the anti-tumor effect and mechanisms of cimetidine in N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN)-induced bladder carcinogenesis model. Sixty-three male BALB/c mice and 67 male Wister rats were treated with BBN and cimetidine to examine the anti-tumor effect of cimetidine. Immunohistochemistry (IHC) of vascular endothelial growth factor (VEGF), platelet-derived endothelial growth factor (PDECGF), and E-selectin were examined to compare their expression in the tumor tissues. In mice, the tumor growth was reduced by cimetidine (p=0.011). The expression of PDECGF was reduced in the cimetidine-treated group (p=0.016). In rats, treatment of cimetidine reduced tumor growth (p=0.0001). Moreover, the expression of VEGF and PDECGF was reduced (p=0.02 and <0.001, respectively). The expression of E-selectin did not correlate with the tumor growth in either mice or rats. In mice, long-term cimetidine treatment proved very effective for inhibiting the tumor growth, but in rats, BBN after treatment with cimetidine showed the least tumor growth-inhibitory effect. In conclusion, cimetidine may have an inhibitory effect on tumor growth in bladder carcinogenesis via reducing the expression of angiogenesis factors including VEGF and PDECGF.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Chihara Y,Fujimoto K,Miyake M,Hiasa Y,Hirao Ydoi
10.3892/or_00000401subject
Has Abstractpub_date
2009-07-01 00:00:00pages
23-8issue
1eissn
1021-335Xissn
1791-2431journal_volume
22pub_type
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