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Related Experiment Videos

High-throughput tissue microarray analysis of COX2 expression in urinary bladder cancer.

Peter J Wild1, Leoni A Kunz-Schughart, Robert Stoehr

  • 1Institute of Pathology, University of Regensburg, Regensburg D-93053, Germany.

International Journal of Oncology
|July 13, 2005
PubMed
Summary

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Cyclooxygenase 2 (COX2) protein expression is common in advanced urinary bladder cancer (BC) with poor prognostic features. Further research into COX2 inhibitors for high-risk BC is warranted.

Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • Cyclooxygenase 2 (COX2) is implicated in various cancers.
  • Its role in urinary bladder cancer (BC) requires further elucidation.

Purpose of the Study:

  • To determine the association between COX2 protein expression and tumor phenotype, immunohistochemical markers, and clinical outcomes in BC.
  • To evaluate COX2 expression in different BC subtypes and stages.

Main Methods:

  • Utilized tissue microarrays from 776 BC patients.
  • Performed immunohistochemical analysis for COX2, P53, and Ki-67.
  • Scored COX2 expression semiquantitatively (0-3+).

Main Results:

  • COX2 expression was detected in 60% of urothelial BC, significantly higher in muscle-invasive compared to squamous cell carcinomas.

Related Experiment Videos

  • COX2 protein levels correlated with advanced tumor stage, high grade, solid growth pattern, high Ki-67 index, and positive P53 staining.
  • No association was found between COX2 expression and survival, recurrence, or progression in specific subgroups.

    • Conclusions:

    • COX2 protein expression is prevalent in advanced BC with adverse prognostic indicators.
    • Findings support clinical trials investigating COX2 inhibitors for adjuvant therapy in high-risk urinary BC.