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[Retinoid receptors in epidermoid carcinoma of the ORL sphere]
A Rallet1, J L Desphieux, J C Jardillier
1Laboratoire de biochimie, Institut Jean-Godinot, Reims, France.
Abstract:
Head and neck tumors from 20 patients were investigated for the presence and the level of retinoid binding proteins (cellular retinoic acid binding protein or CRABP, cellular retinol binding protein or CRBP). A binding assay-gel filtration technic was used. CRABP were found in all tumors and in the adjacent normal tissues. A decreased level was associated with poor prognostic factors. CRBP were only found in some tumors and were absent from the adjacent normal tissue and from benign tumors. These results are discussed as regards their interest in prognostic evaluation and therapeutic orientation.
Insights
Cellular retinoic acid binding protein (CRABP) was found in all head and neck tumors, with lower levels indicating a poorer prognosis. Cellular retinol binding protein (CRBP) was detected only in some tumors, suggesting potential diagnostic value.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Context:
- Head and neck tumors represent a significant clinical challenge.
- Retinoid binding proteins play crucial roles in cellular processes.
- Understanding protein expression in tumors is vital for diagnosis and treatment.
Purpose:
- To investigate the presence and levels of cellular retinoic acid binding protein (CRABP) and cellular retinol binding protein (CRBP) in head and neck tumors.
- To correlate CRABP and CRBP levels with prognostic factors.
- To explore the potential of these proteins in prognostic evaluation and therapeutic guidance.
Summary:
- CRABP was detected in all investigated head and neck tumors and adjacent normal tissues.
- A decreased level of CRABP was associated with unfavorable prognostic indicators.
- CRBP was found exclusively in some tumors, absent in normal tissues and benign tumors.
Impact:
- Findings suggest CRABP levels could serve as a prognostic biomarker in head and neck cancers.
- The differential expression of CRBP may offer diagnostic or therapeutic insights.
- This research aids in refining prognostic assessments and guiding treatment strategies for head and neck malignancies.