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Article

Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer

  • Authors:
    • Mario K. Kramer
    • Sandra Waalkes
    • Jörg Hennenlotter
    • Jürgen Serth
    • Arnulf Stenzl
    • Markus A. Kuczyk
    • Axel S. Merseburger
  • View Affiliations / Copyright

    Affiliations: Department of Urology, Hannover Medical School, D-30625 Hannover, Germany
  • Pages: 621-626
    |
    Published online on: July 1, 2010
       https://doi.org/10.3892/ol_00000110
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Abstract

Maspin is a 42-kDa protein that belongs to the family of serine protease inhibitors. It is involved in various physiological processes. In cancer tissue, Maspin was found to influence angiogenesis, tumor growth, metastasis and the prognosis of tumor patients. This study was performed to analyze the involvement of Maspin in transitional cell carcinoma of the bladder as well as its prognostic impact in a large patient cohort. Specimens from 162 non-muscle invasive bladder cancer patients (pTa, 91; pT1, 71) treated by transurethral resection with a minimum 3-year follow-up (median 58.5 months) were included in the present investigation. Tissue microarrays were constructed, and the specimens were immunohistochemically stained for Maspin protein expression. Each tissue specimen was assessed on a staining scale ranging from 0 (no staining) to 300 (strong staining) and correlated with various clinicopathological parameters. Maspin protein expression predicted progression with a sensitivity of 95% and a specificity of 70% (p<0.001). In predicting recurrence, Maspin staining showed 52% sensitivity and 67% specificity (p<0.05). Kaplan-Meier analyses were performed, and a low Maspin protein expression was correlated with a higher incidence of tumor progression (p<0.0001). However, expression levels of Maspin protein did not distinguish between pTa and pT1 specimens. Multivariate analyses indicated Maspin expression as an independent factor for predicting progression (p<0.0001) and recurrence (p<0.05). The present results suggest that the Maspin protein expression is an independent prognostic indicator for predicting recurrence and progression to muscle invasive disease. This study further emphasizes a possible clinical role of this novel tumor suppressor gene in transitional cell carcinoma of the bladder.
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Copy and paste a formatted citation
Spandidos Publications style
Kramer MK, Waalkes S, Hennenlotter J, Serth J, Stenzl A, Kuczyk MA and Merseburger AS: Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer . Oncol Lett 1: 621-626, 2010.
APA
Kramer, M.K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M.A., & Merseburger, A.S. (2010). Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer . Oncology Letters, 1, 621-626. https://doi.org/10.3892/ol_00000110
MLA
Kramer, M. K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M. A., Merseburger, A. S."Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer ". Oncology Letters 1.4 (2010): 621-626.
Chicago
Kramer, M. K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M. A., Merseburger, A. S."Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer ". Oncology Letters 1, no. 4 (2010): 621-626. https://doi.org/10.3892/ol_00000110
Copy and paste a formatted citation
x
Spandidos Publications style
Kramer MK, Waalkes S, Hennenlotter J, Serth J, Stenzl A, Kuczyk MA and Merseburger AS: Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer . Oncol Lett 1: 621-626, 2010.
APA
Kramer, M.K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M.A., & Merseburger, A.S. (2010). Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer . Oncology Letters, 1, 621-626. https://doi.org/10.3892/ol_00000110
MLA
Kramer, M. K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M. A., Merseburger, A. S."Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer ". Oncology Letters 1.4 (2010): 621-626.
Chicago
Kramer, M. K., Waalkes, S., Hennenlotter, J., Serth, J., Stenzl, A., Kuczyk, M. A., Merseburger, A. S."Maspin protein expression correlates with tumor progression in non-muscle invasive bladder cancer ". Oncology Letters 1, no. 4 (2010): 621-626. https://doi.org/10.3892/ol_00000110
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