IMMUNOHISTOCHEMICAL LOCALIZATION OF COX2 IN CELLS OF MAMMARY ADENOCARCINOMAS IN BITCHES AS RELATED TO TUMOUR MALIGNANCY GRADE
Marcin Nowak, J.A. Madej, Piotr Dzięgiel
Abstract
Marcin Nowak, J.A. Madej, Piotr Dzięgiel
Abstract
Using immunohistochemistry the localization and expression intensity of COX2 were evaluated in mammary adenocarcinomas in bitches. The obtained results were related to the tumour malignancy grades. Material for the studies was sampled in the course of surgery from bitches of various strains which developed the primary mammary tumour. In cytoplasm of mammary adenocarcinoma cells the presence of COX2 was disclosed in 74% of the examined tumours. Augmented expression of COX2 was noted in samples of tumours demonstrating high grades of malignancy. A moderate positive correlation was disclosed between expression of COX2 and the grade of histological malignancy (r = 0.41), which might point to the involvement of the enzyme in neoplastic transformation of cells in the mammary glands.
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Using immunohistochemistry the localization and expression intensity of COX2 were evaluated in mammary adenocarcinomas in bitches. The obtained results were related to the tumour malignancy grades. Material for the studies was sampled in the course of surgery from bitches of various strains which developed the primary mammary tumour. In cytoplasm of mammary adenocarcinoma cells the presence of COX2 was disclosed in 74% of the examined tumours. Augmented expression of COX2 was noted in samples of tumours demonstrating high grades of malignancy. A moderate positive correlation was disclosed between expression of COX2 and the grade of histological malignancy (r = 0.41), which might point to the involvement of the enzyme in neoplastic transformation of cells in the mammary glands.
Key concepts: Malignancy, Immunohistochemistry, Pathology, Adenocarcinoma, Cytoplasm, Mammary gland, Malignant transformation, Biology