Breast Cancer Cells and Elastase Production
Author Information
Author(s): J.-I. Yamashita, M. Ogawa, S. Ikei, H. Omachi, S.-I. Yamashita, T. Saishoji, K. Nomura, H. Sato
Primary Institution: Kumamoto University Medical School
Hypothesis
Do breast cancer cells produce polymorphonuclear leucocyte elastase (PMN-E) and how does it relate to cancer progression?
Conclusion
Breast cancer cells produce PMN-E, and higher levels of this enzyme are associated with more advanced disease and poorer survival outcomes.
Supporting Evidence
- ir-PMN-E was detected in 59 of 62 breast cancer tissue extracts.
- Patients with high levels of ir-PMN-E had significantly shorter disease-free survival.
- ir-PMN-E content was significantly higher in advanced cancer stages.
Takeaway
Breast cancer cells can make a special enzyme that helps them spread, and having more of this enzyme means the cancer is likely worse.
Methodology
The study measured PMN-E levels in breast cancer cell lines and tissue extracts using a sensitive enzyme immunoassay.
Limitations
The study had a small sample size of 62 patients.
Participant Demographics
Patients who underwent mastectomy for breast cancer between 1982 and 1984.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
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