Related Experiment Videos
NCAM (neural cell adhesion molecules) expression in malignant mesotheliomas
S Lantuéjoul1, M H Laverrière, N Sturm
1Thoracic Surgery Department, Grenoble, France.
Human Pathology
|May 23, 2000
Summary
Neural cell adhesion molecules (NCAM) are expressed in 73% of malignant mesotheliomas (MM), a marker not found in non-small cell lung carcinomas. This finding aids in distinguishing MM from lung cancers.
Area of Science:
- Oncology
- Cell Biology
- Tumor Immunology
Background:
- Neural cell adhesion molecules (NCAM) are implicated in various tumors.
- NCAM expression patterns are not well-defined in mesotheliomas.
- Distinguishing malignant mesothelioma from non-small cell lung carcinoma is clinically significant.
Purpose of the Study:
- To investigate Neural cell adhesion molecule (NCAM) expression in malignant mesotheliomas (MM).
- To compare NCAM expression in MM with normal mesothelium and non-small cell lung carcinomas (NSCLC).
- To evaluate NCAM as a potential diagnostic marker for MM.
Main Methods:
- Studied 26 malignant mesothelioma (MM) cases (epithelioid, biphasic, sarcomatoid) and 50 non-small cell lung carcinoma (NSCLC) cases.
- Utilized electron microscopy as a gold standard for MM recognition.
- Assessed NCAM reactivity (123C3 antibody) and compared with neuroendocrine markers (chromogranin A, synaptophysin).
Main Results:
- NCAM was expressed in 73% (19/26) of MM, with membranous staining.
- Normal mesothelium was negative for NCAM.
- No NSCLC cases showed membranous NCAM staining, differentiating them from MM.
Conclusions:
- NCAM expression is a frequent finding in malignant mesotheliomas (MM).
- NCAM expression in MM is distinct from non-small cell lung carcinomas (NSCLC).
- NCAM serves as a potential biomarker for differentiating MM from NSCLC.