Claudin-5 protein is a new differential marker for histopathological differential diagnosis of canine hemangiosarcoma

Jakab, Csaba and Halász, Judit and Kiss, András and Schaff, Zsuzsa and Rusvai, Miklós and Gálfi, Péter and Abonyi-Tóth, Zsolt and Kulka, Janina (2009) Claudin-5 protein is a new differential marker for histopathological differential diagnosis of canine hemangiosarcoma. HISTOLOGY AND HISTOPATHOLOGY, 24. pp. 801-813. ISSN 0213-3911

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Aims: Claudin-5 protein is an endothel-specific claudin, present in tight junctions. To evaluate its usefulness as a differential diagnostic marker of canine hemangiosarcomas, the expression of claudin-5 molecule was studied in different canine tumours of vascular origin. Methods and results: Ninety two canine neoplastic tissue samples obtained from necropsies and biopsy specimens were routinely processed and stained immunhistochemically for claudin-5. The neoplastic endothelial cells of canine hemangiosarcomas, hemangiomas, and lymphangiomas showed a strong membrane immunoreactivity for claudin-5, but the other investigated canine malignant and benign tumours, including fibrosarcomas, myxo-, leiomyo-, cardiac rhabdomyo-, neurofibro-, synovial-, osteo-, and chondrosarcomas, spindle cell melanomas, hemangiopericytomas, benign fibroblast proliferations, and leiomyomas were negative for this endothelial marker. In these non-vascular canine tumours intense immunostaining was detected in the endothelial cells of the incorporated intratumoural vessels and neovasculature. The canine splenic hematomas induced by hemangiosarcomas were distinguished from splenic hematomas induced by non-neoplastic lesions by the means of claudin-5 protein. In hemangiosarcomas the percentage of positive neoplastic endothelial cells was higher, and stronger when using the claudin-5 molecule compared to CD31 and vWf. Conclusion: The results show that claudin-5 molecule can be used as a new differential marker, and could also be of a diagnostic value in the differential diagnosis of canine hemangiosarcomas from sarcomas of other origin with hemorrhages or increased vascularization. Claudin-5 could help to reveal neoplastic proliferation of endothelial cells causing splenic hematomas and differentiate these tumours from non-vascular neoplastic splenic lesion. The immunohistochemical detection of the claudin-5 protein had a higher sensitivity than CD31, and vWf antigen in case of canine hemangiosarcomas.

Item Type: Article
Uncontrolled Keywords: Canine hemangiosarcoma, Immunohistochemistry, Claudin-5, Differential diagnosis, Canine splenic hematoma
Subjects: R Medicine / orvostudomány > R1 Medicine (General) / orvostudomány általában
R Medicine / orvostudomány > RB Pathology / patológia, kórtan
R Medicine / orvostudomány > RZ Other systems of medicine / orvostudomány egyéb területei
Depositing User: MTMT SWORD
Date Deposited: 26 May 2014 07:39
Last Modified: 26 May 2014 07:39

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