Lipoxygenase-5 Expression in Canine Urinary Bladder: Normal Urothelium, Cystitis and Transitional Cell Carcinoma



Finotello, Riccardo ORCID: 0000-0002-1932-211X, Schiavo, Luca, Ressel, Lorenzo ORCID: 0000-0002-6614-1223, Frohmader, Ava, Silvestri, Paolo and Verin, Ranieri ORCID: 0000-0001-9366-5682
(2019) Lipoxygenase-5 Expression in Canine Urinary Bladder: Normal Urothelium, Cystitis and Transitional Cell Carcinoma. JOURNAL OF COMPARATIVE PATHOLOGY, 170. pp. 1-9.

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Abstract

Transitional cell carcinoma (TCC) is the most common canine urinary tract tumour and mimics human invasive TCC. Human TCCs overexpress lipoxygenase (LOX)-5 and the use of target inhibitors has proven effective in inhibiting neoplastic growth. In this study, we investigated the immunohistochemical expression of LOX-5 in normal canine urinary bladder, cystitis and TCC. The comparative expression of LOX-5, cyclo-oxygenase (COX)-1 and COX-2 among the three tissue groups was also examined. Biopsy samples from cases of cystitis and TCC were reviewed from 2012 to 2016; samples of histologically normal bladder were used as controls. Dogs were excluded if they had received glucocorticoids, non-steroidal anti-inflammatory drugs (NSAIDs) and/or chemotherapy prior to tissue collection. LOX-5 was expressed in 95% of TCCs, 23% of cases of cystitis and 10% of controls. LOX-5 and COX-2 immunohistochemistry scores were significantly (P <0.01) higher in TCCs versus cystitis and normal bladders. Results of this study support the rationale for further investigation of the use of NSAIDs with dual anti COX-2 and LOX-5 effect for the treatment of canine TCC.

Item Type: Article
Uncontrolled Keywords: cystitis, dog, lipoxygenase, transitional cell carcinoma
Depositing User: Symplectic Admin
Date Deposited: 11 Jun 2019 09:33
Last Modified: 19 Jan 2023 00:40
DOI: 10.1016/j.jcpa.2019.05.001
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3045275