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The prognostic importance of the nucleolar organizer region (AgNOR), Ki-67 and proliferating cell nuclear antigen (PCNA) in primary nonurachal bladder adenocarcinoma

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Abstract:

The aim of this study was to investigate the role of tumor proliferation in patients with nonurachal bladder adenocarcinoma. Samples were obtained from 16 patients (12 men and 4 women, mean age 62 years) with primary nonrurachal bladder adenocarcinoma. The 16 formalin-fixed specimens were stained immunohistochemically for Ki-67 antigen and PCNA using MIB-1 and PC-10 antibodies. In addition, the AgNOR quantity was assessed using the colloid silver nitrate staining technique in all cases. The Ki-67, PCNA and AgNOR proliferation indices were found to be significantly higher in high-grade and invasive tumors. The higher the grade (p<0.01) and stage (p<0.01), the higher were the proliferation indices. Patients whose tumor samples had a high Ki-67, PCNA and AgNOR proliferation index showed a higher incidence of local recurrence (p<0.01) and distant metastasis (p<0.01). In conclusion, our results suggest that Ki-67, PCNA and AgNOR proliferation scores may be important prognostic indices in nonurachal bladder adenocarcinomas.

Keywords: AgNOR; Bladder neoplasm; Ki-67 antigen; PCNA; adenocarcinoma; primary; proliferation

Document Type: Original Article

Affiliations: 1: Ankara University School of Medicine, Department of Pathology, Ankara, 2: Ankara Advanced Specialization Hospital, Deparment of Urology, Ankara, Turkey

Publication date: 2001-06-01

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