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  • Title: Immunohistochemical expression of caveolin-1 in normal and neoplastic canine mammary tissue.
    Author: Amorim I, Lopes CC, Faustino AM, Pereira PD.
    Journal: J Comp Pathol; 2010 Jul; 143(1):39-44. PubMed ID: 20153867.
    Abstract:
    Caveolins are the major structural proteins of caveolae and play a role in tumour surveillance. The expression of caveolin-1 (Cav-1) was investigated immunohistochemically in samples of normal canine mammary tissue (n=5), benign (n=23) and malignant (n=45) mammary tumours, tumour emboli (n=10) and metastatic lesions (n=10). Cav-1 was not expressed by normal luminal epithelium, but was consistently expressed by normal myoepithelial cells. There was no epithelial expression of Cav-1 by the benign mammary lesions, but the molecule was detected in 35.6% of the malignant lesions, 80% of the tumour emboli and in 40% of the metastatic lesions. These findings link increased expression of Cav-1 to neoplastic transformation and suggest that Cav-1 expression is associated with more malignant canine mammary tumours and their vascular invasion and regional lymph node metastasis.
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