p63 and E-cadherin Expression in Canine Oral Squamous Cell Carcinoma

The expression of p63 and E-cadherin was studied in 22 oral squamous cell carcinomas in the dog according to immunohistochemical techniques. The association between these markers and clinicopathologic parameters was assessed. All tumor cells studied showed enhanced p63 expression. Regarding E-cadher...

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Bibliographic Details
Published in:Veterinary pathology 2015-07, Vol.52 (4), p.614-620
Main Authors: Mestrinho, L. A., Pissarra, H., Faísca, P. B., Bragança, M., Peleteiro, M. C., Niza, M. M. R. E.
Format: Article
Language:English
Subjects:
Animals
Biomarkers, Tumor - metabolism
Cadherins - metabolism
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - pathology
Cytoplasm - metabolism
Dogs
Female
Immunohistochemistry - veterinary
Lymphatic Metastasis
Male
Mouth Neoplasms - metabolism
Mouth Neoplasms - pathology
Mouth Neoplasms - veterinary
Tumor Suppressor Proteins - metabolism
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Summary:The expression of p63 and E-cadherin was studied in 22 oral squamous cell carcinomas in the dog according to immunohistochemical techniques. The association between these markers and clinicopathologic parameters was assessed. All tumor cells studied showed enhanced p63 expression. Regarding E-cadherin expression, 17 of 22 cases (77.3%) showed decreased immunoreactivity, and in 13 of 22 cases (59.1%), its expression was cytoplasmic. Neither p63 nor E-cadherin expression patterns were associated with tumor size, bone invasion, or lymph node metastasis. p63 score was related to proliferating cell nuclear antigen proliferative index (P = .020). A statistically significant correlation between the expression patterns of these 2 markers was noted (P = .026). Furthermore, they were related with tumor grade. An atypical p63 labeling and a cytoplasmic E-cadherin staining were statistically related with a higher tumor grade (P = .022 and P = .017, respectively). These findings suggest that changes in p63 and E-cadherin expression are frequent events in oral squamous cell carcinoma in dogs.
ISSN:0300-9858
1544-2217
DOI:10.1177/0300985814547391