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Keratin 19 Marks Poor Differentiation and a More Aggressive Behaviour in Canine and Human Hepatocellular Tumours by Renee GHM van Sprundel; Ted SGAM van den Ingh; Valeer J Desmet; Azeam Katoonizadeh; Louis C Penning; Jan Rothuizen; Tania Roskams; Bart Spee is a Medicine article available to read on EtoBox.

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## Abstract ## Background The expression of Keratin 19 (K19) was reported in a subset of hepatocellular carcinomas (HCCs). K19 positive HCCs are associated with an increased malignancy compared to K19 negative HCCs. No suitable mouse models exist for this subtype of HCC, nor is the incidence of K19 expression in hepatocellular neoplasia in model animals known. Therefore, we compared the occurrence and tumour behaviour of K19 positive hepatocellular neoplasias in dog and man. ## Results The expression of hepatocellular differentiation (HepPar-1), biliary/progenitor cell (K7, K19), and malignancy (glypican-3) markers was semi-quantitatively assessed by immunohistochemistry. The histological grade of tumour differentiation was determined according to a modified classification of Edmondson and Steiner; the staging included intrahepatic, lymph node or distant metastases. Four of the 34 canine hepatocellular neoplasias showed K19 positivity (12%), of which two co-expressed K7. K19 positive tumours did not express HepPar-1, despite the histological evidence of a hepatocellular origin. Like in human HCC, all K19 positive hepatocellular neoplasias were glypican-3 positive and histologically

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Author

Renee GHM van Sprundel; Ted SGAM van den Ingh; Valeer J Desmet; Azeam Katoonizadeh; Louis C Penning; Jan Rothuizen; Tania Roskams; Bart Spee

Publisher

BioMed Central; Springer (Biomed Central Ltd.); [London]: BioMed Central, c2002-2012.; Springer Science and Business Media LLC (ISSN 1476-5926)

Published

2010

Language

EN

Field

Medicine (Health Sciences)