RT Journal Article
SR Electronic
A1 Bezdekova, Michala
A1 Brychtova, Svetlana
A1 Sedlakova, Eva
A1 Steigerova, Jana
A1 Hlobilkova, Alice
A1 Bienova, Martina
A1 Kucerova, Renata
A1 Brychta, Tomas
A1 Krejci, Veronika
A1 Kolar, Zdenek
T1 Immunohistochemical assessment of E-cadherin and β-catenin in trichofolliculomas and trichoepitheliomas
JF Biomedical papers
YR 2007
VO 151
IS 2
SP 251
OP 255
DO 10.5507/bp.2007.042
UL https://biomed.papers.upol.cz/artkey/bio-200702-0012.php
AB Background: Trichofolliculomas and trichoepitheliomas are benign skin neoplasms originating from hair follicle cells. They result from defects in the signaling pathways that regulate hair follicle morphogenesis and regeneration. Thus they seem to be an excellent model of these processes. It is known that the E-cadherin/β-catenin system of adhesion molecules plays a crucial role in the maintenance of tissue architecture.
Aim: The aim of the present study was to investigate their involvement in benign hair follicle tumor development.
Methods: Semiquantitative intensity of expression were examined in formalin-fixed and paraffin-embedded tissue sections of 53 trichoepitheliomas, 15 trichofolliculomas and 19 normal skin samples by indirect immunohistochemistry.
Results: The intensity of E-cadherin/β-catenin expression in tumor cells did not differ from controls. However, normal hair follicles cells exhibited membranous E-cadherin/β-catenin expression, whereas both types of tumors, particularly trichoepitheliomas, showed E-cadherin/β-catenin expression with a predominantly cytoplasmic localization. Conclusions:We suggest that this dystopic distribution of the E-cadherin/β-catenin complex in hair follicle tumor cells may be a marker of cell-cell adhesion disruption which may contribute to the tumor formation.