Relationship between receptors for insulin-like growth factor - I, steroid hormones and apoptosis-associated proteins in canine mammary tumors

• Autorzy: Dolka I. , Motyl T. , Malicka E. , Sapierzynski R. , Fabisiak M.
• Języki publikacji: EN

Abstrakty

EN

In the veterinary literature there are few data concerning the expression of insulin-like growth factor type I (IGF-IR) in the canine mammary gland tumors. The aim of the present study was the evaluation of IGF-IR expression and its correlation to the expression of estrogen receptor α (ERα) and progesterone receptor (PR), proteins: Bcl-2, Bax, p53 in canine mammary gland tumors, and also a correlation with other features: bitch’s age, tumor diameter, histologic type of tumor, degree of histologic malignancy, proliferate activity. The study was done on 112 epithelial neoplasms: 21 (19%) were adenoma, 38 (34%) complex carcinoma (adenocarcinoma), 47 (42%) simple carcinoma (adenocarcinoma) and 6 (5%) solid carcinoma. Histochemistry and immunohistochemistry methods were employed. It was shown that more common and/or higher IGF-IR expression in cells of canine mammary gland tumors was related to the histologic type of cancer of worse prognostic (solid and simple carcinoma), high histologic degree of malignancy (IIIo) but the statistical analysis did not reveal any significant differences. We observed the high degree of IGF-IR expression in tumors which displayed the high ERα and PR expression. These results suggest the involvement of IGF-IR in the development of hormonosensitive canine mammary tumors. Additionally, the significant positive correlation between expression of IGF-IR and p53, Bax was found. Our study provides some evidence that interactions exist between the IGF-IR and these apoptosis-associated proteins may contribute to the development and progression of canine mammary gland tumors. These results require further investigations.

Słowa kluczowe

EN

relationship; receptor; insulin-like growth factor; steroid hormone; apoptosis-associated protein; dog; mammary tumour; cancer

• Wydawca: -
• Czasopismo: Polish Journal of Veterinary Sciences
• Rocznik: 2011
• Tom: 14
• Numer: 2
• Opis fizyczny: p.245-251,fig.,ref

Twórcy

autor

Dolka I.

• Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - WULS, Nowoursynowska 159c, 02-776 Warsaw, Poland

autor

Motyl T.

autor

Malicka E.

autor

Sapierzynski R.

autor

Fabisiak M.

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