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Immunoexpression of trefoil factor 1 in non-neoplastic and neoplastic canine gastric tissues

Animals, ISSN: 2076-2615, Vol: 11, Issue: 10
2021
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Article Description

TFF1 expression is markedly reduced in human GCs, suggesting that TFF1 is a tumor suppressor for human gastric cancer. The present study evaluated the expression and distribution pattern of TFF1 in paraffin-embedded canine gastric tissue samples, including normal mucosa (n = 3), polyps (n = 8), carcinomas (n = 31) and their adjacent non-neoplastic mucosa (n = 30), neoplastic emboli (n = 14), and metastatic lesions (n = 8), by immunohistochemistry (IHC). All normal gastric tissues expressed TFF1 in the superficial foveolar epithelium and mucopeptic cells of the neck re-gion. Most gastric polyps (GPs) displayed immunoreactivity for TFF1 in >75% of the epithelial com-ponent. In GCs, the expression of TFF1 was found reduced in 74.2% of the cases. The level of TFF1 expression had a decreased tendency from normal gastric mucosa to GPs and GCs (p < 0.05). No significant differences in the expression of TFF1 were found in GCs, according to age, sex, histolog-ical type based on World Health Organization (WHO) and Lauren classification, tumor location, depth of tumor invasion, presence of neoplastic emboli or metastatic lesions. The median survival time of GC patients with preserved and reduced TFF1 immunoexpression were 30 and 12 days, respectively. Kaplan–Meier analysis revealed no significant survival differences between the two groups (p > 0.05). These findings suggest that TFF1 protein may play a role in canine gastric carcin-ogenesis, and further studies are necessary to define its usefulness as a prognostic indicator in canine gastric carcinoma.

Bibliographic Details

Flores, Ana R; Castro, Marisa; Rêma, Alexandra; Mesquita, João R; Taulescu, Marian; Gärtner, Fátima; Seixas, Fernanda; Amorim, Irina

MDPI AG

Agricultural and Biological Sciences; Veterinary

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