Prognostic value of markers of aggressiveness of urinary bladder tumours evaluated by immunohistochemistry
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Abstract
Background: The study of some immunohistochemical markers provides an objective and reproducible prognostic evaluation of urinary bladder tumour.
aims: study the expression of the following immunohistochemical markers in Tumours of the bladder: Proliferating Cell Nuclear Antigen (PCNA), Ki67 antigen (MIB1), the C-erbB2 proto- antigene, the tumor suppressor gene p53, the receptor for epidermal growth factor (EGF-R), the apoptosis suppressor gene bcl2, the carcinoembryonic antigen (CEA) and epithelial membrane antigen (EMA).
methods: Study of retrospective series of 30 patients having tumours of the urinary bladder.
results: The expression of PCNA with a cut-off value of 14% is correlated with recurrence (P = 0.010). The expression of PCNA with a cut-off value of 1% is correlated with tumour stage (P = 0.003). The expression of MIB1 with a cut-off value of 47% is correlated with recurrence (P = 0.010). The expression of MIB1 with a cut-off value of 47% is correlated with the tumour progression in stage and\or in grade (P = 0.007). The expression of C-erbB2 with a cutoff value of 28% is correlated in the tumour grade (P = 0.007). The other antibodies didn’t demonstrate a prognostic value.
Conclusion: MIb1 and PCNA being correlated with recurrence, they can be useful with the decision of the rhythm of the endoscopy. The correlation of C-erbB2 with the tumour grade could serve to better graduating bladder tumours.
Keywords:
Urinary bladder tumour, immunohistochemistry, prognosis.##plugins.themes.academic_pro.article.details##
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