Detection of cathepsin B, cathepsin L, cystatin C, urokinase plasminogen activator and urokinase plasminogen activator receptor in the sera of lung cancer patients

  • Authors:
    • Qingyong Chen
    • Jun Fei
    • Lijun Wu
    • Zhongyong Jiang
    • Yuquan Wu
    • Yun Zheng
    • Guohua Lu
  • View Affiliations

  • Published online on: May 11, 2011     https://doi.org/10.3892/ol.2011.302
  • Pages: 693-699
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

The present study aimed to determine the levels of cathepsin B (cath B), cathepsin L (cath L), cystatin C, urokinase plasminogen activator (u-PA) and urokinase plasminogen activator receptor (u-PAR) in the sera of patients with lung cancer compared to healthy controls using ELISA. Concomitantly, the relationship between the components and clinicopathological prognosis was analyzed. The study included 30 healthy volunteers and 105 lung cancer patients. Blood samples were collected and cath B, cath L, cystatin C, u-PA and u-PAR measurements were made using ELISA. Results showed that the levels of cath B, cath L, cystatin C, u-PA and u-PAR were significantly higher in the patient group compared to the healthy controls. The significance was marked for cath B and mild for u-PAR in correlation with lymph node metastasis. There was no significance for other parameters. Notably, patients with a combination of high cystatin C and high cath B levels had significantly lower survival probability as compared to those with cystatin C+/cath B- or with cystatin C-/cath B-. Similarly, patients with a combination of high u-PA and u-PAR experienced significantly shorter survival. Furthermore, the univariate analysis revealed that cath B, u-PAR, lymph node metastases, stage and grade were related to survival. However, findings of the multivariate Cox analysis indicated that the sera levels of cath B, u-PAR and lymph node metastases may serve as independent prognostic variables in patients with lung cancer.
View Figures
View References

Related Articles

Journal Cover

July-August 2011
Volume 2 Issue 4

Print ISSN: 1792-1074
Online ISSN:1792-1082

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Chen Q, Fei J, Wu L, Jiang Z, Wu Y, Zheng Y and Lu G: Detection of cathepsin B, cathepsin L, cystatin C, urokinase plasminogen activator and urokinase plasminogen activator receptor in the sera of lung cancer patients. Oncol Lett 2: 693-699, 2011
APA
Chen, Q., Fei, J., Wu, L., Jiang, Z., Wu, Y., Zheng, Y., & Lu, G. (2011). Detection of cathepsin B, cathepsin L, cystatin C, urokinase plasminogen activator and urokinase plasminogen activator receptor in the sera of lung cancer patients. Oncology Letters, 2, 693-699. https://doi.org/10.3892/ol.2011.302
MLA
Chen, Q., Fei, J., Wu, L., Jiang, Z., Wu, Y., Zheng, Y., Lu, G."Detection of cathepsin B, cathepsin L, cystatin C, urokinase plasminogen activator and urokinase plasminogen activator receptor in the sera of lung cancer patients". Oncology Letters 2.4 (2011): 693-699.
Chicago
Chen, Q., Fei, J., Wu, L., Jiang, Z., Wu, Y., Zheng, Y., Lu, G."Detection of cathepsin B, cathepsin L, cystatin C, urokinase plasminogen activator and urokinase plasminogen activator receptor in the sera of lung cancer patients". Oncology Letters 2, no. 4 (2011): 693-699. https://doi.org/10.3892/ol.2011.302