THE VALUE OF THE LYSOSOMAL PROTEASE CATHEPSIN-D IN EGYPTIAN BLADDER-CANCER
- S EISSA
- O ELAHMADY
- AG ELDIN
- T HELAL
- I KHALAF
Published online on: July 1, 1994
Cathepsin D was measured in cytosols of 60 malignant bladder specimens and normal tissue from the same bladder at safety margin 5 cm of the tumor. Significant elevation in cathepsin D level (50 +/- 3.5 pmol/mg protein) in bladder carcinoma compared to normal tissue (12.7 +/- 1.58 pmol/mg protein) was found. At 100% specificity, cathepsin D sensitivity was 78%. The positivity rate of cathepsin D increased in the presence of lymph node metastasis. The higher concentration of cathepsin D in malignant bladder tissue vs. normal tissue and its correlation with lymph node metastasis could reflect its importance as a marker of metastatic potentiality of primary bladder cancer.