Relationship between the argyrophilic proteins of the nucleolar organizer region and stage of squamous-cell carcinoma of the lung.

D S Kobyakov, V V Klimachev, A M Avdalyan, I P Bobrov, E Yu Bychkova, A F Lazarev, E L Lushnikova, L M Nepomnyashchikh

Bulletin of experimental biology and medicine 2013 Nov

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Argyrophilic proteins associated with chromosome nucleolar organizer regions (Ag-NOR proteins) were studied in lung squamous-cell carcinoma cells. After routine staining with silver nitrate, the area index and coefficient of variations of Ag-NOR protein were estimated by computer-aided image analysis. The Ag-NOR protein area indexes of tumor cells differed in clinical morphological variants of squamous-cell cancer (differing by T and N parameters, size of the primary node <3 cm or larger, by disease stage, and differentiation degree). Ag-NOR protein variation coefficient can be used for discriminating the tumors by size (<3 cm and larger), presence/absence of metastases, and evaluation of squamous-cell cancer differentiation degree. Ag-NOR protein area index and variation coefficient can be used as additional objective differential diagnostic criteria of clinical and morphological forms of squamous-cell carcinoma of the lung.

Citation

D S Kobyakov, V V Klimachev, A M Avdalyan, I P Bobrov, E Yu Bychkova, A F Lazarev, E L Lushnikova, L M Nepomnyashchikh. Relationship between the argyrophilic proteins of the nucleolar organizer region and stage of squamous-cell carcinoma of the lung. Bulletin of experimental biology and medicine. 2013 Nov;156(1):81-5