Τίτλος:
Cytokeratin-7, cytokeratin-19, and c-Kit: Immunoreaction during the
evolution stages of primary biliary cirrhosis
Περίληψη:
Aims: The quantitative and qualitative expression of CK-7, CK-19, and
c-Kit markers in various cell types were evaluated during the four
stages of primary biliary cirrhosis.
Methods: A total of 53 specimens were examined. Thirteen specimens were
identified as Ludwig’s stage 1, 23 as stage 2, 14 as stage 3, and 2 as
stage 4. Immunohistochemical stains were performed for CK-7, CK-19,
c-Kit and subsequently graded. The cell types expressing the markers
were qualitatively analysed.
Results: In normal liver, biliary epithelial cells expressed CK-7,
CK-19, whereas the Canals of Hering (CoH) were stained with c-Kit and
partly CK-19, contrary to hepatocytes. The aforementioned expression
patterns were detected in pathologic samples of PBC, with qualitative
and quantitative differences though. CK-7 grading was found to
correspond with Ludwig’s staging, in contrast to CK-19. c-Kit was absent
in the early stages and focally present in the advanced stages. All
biliary-type, intermediate cells and hepatocytes were CK-7 positive,
particularly in samples with cholestasis, whereas CK-19 was only found
in biliary-type and intermediate cells. c-Kit was expressed in CoH which
appeared as clusters and strings of cuboidal cells in advanced stages.
Conclusions: CK-7 can be regarded as a histological marker of
progression in PBC; CK-19 cannot be assessed as a safe marker in the
development of the disease. The absence of c-Kit in the early stages of
PBC is related to the destruction of the CoH. CK-7 hepatocyte expression
in the advanced stages is likely to be related to damaged hepatocytes’
metaplastic potential. (C) 2006 Elsevier Ireland Ltd. All rights
reserved.
Συγγραφείς:
Chatzipantelis, Paschalis
Lazaris, Andreas C.
Kafiri, Georgia
and Papadimitriou, Konstandina
Papathomas, Thomas G.
Nonni,
Aphrodite
Patsouris, Efstratios S.
