Document Detail

LASP-1, a Novel Urinary Marker for Detection of Bladder Cancer.
MedLine Citation:
PMID:  22481019     Owner:  NLM     Status:  Publisher    
The LIM and SH3 (LASP)-1 protein is a focal adhesion protein that has been linked to oncogenesis. The aim of this study was to evaluate the diagnostic use of the detection of LASP-1 in tumor specimens and in urine for noninvasive detection of transitional cell carcinoma (TCC). Immunohistochemical staining for LASP-1 was performed on 72 archived bladder tumor specimens, and LASP-1 content was measured in 132 spontaneous urine sample sediments by Western blot analysis. In the histologic specimens, immunohistochemical staining for LASP-1 showed abundant expression throughout the urothelium of the bladder and ureter. However, modest overexpression of LASP-1 was observed in the TCC specimens. Measurement of the LASP-1 protein concentrations in urinary cell pellets from healthy donors and bladder cancer patients was highly sensitive for the presence of TCC. The cut-off value was determined by receiver operating characteristic (ROC) analysis. When a cut-off value of 1 ng LASP-1/500 μl of urine was used, the sensitivity, specificity, and positive and negative predictive values of the assay were 83.1%, 85.3%, 83.1%, and 80.6%, respectively. The increased urinary LASP-1 content in TCC patients was attributable in part to a specific increase in cell shedding presumably caused by changes in cell adhesion, as confirmed by LASP-1 knockdown. Contamination with erythrocytes above 250 cells/μl and urinary infection gave false positive results and are therefore sample exclusion criteria. In conclusion, in the absence of urinary infection or gross hematuria, urinary LASP-1 level is a promising marker for transitional cell carcinoma.
Peter Ardelt; Nadine Grünemay; Annette Strehl; Cordula Jilg; Arkadius Miernik; Burkhard Kneitz; Elke Butt
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-3
Journal Detail:
Title:  Urologic oncology     Volume:  -     ISSN:  1873-2496     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9805460     Medline TA:  Urol Oncol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Department of Urology, Albert Ludwig University of Freiburg Medical School, Freiburg, Germany.
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