E-cadherin, CD44 and CD44v6 in squamous intraepithelial lesions and invasive carcinomas of the uterine cervix: An immunohistochemical study

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

Faleiro Rodrigues, C (Autor) Outra; Lopes, C (Autor) ICBAS

Revista

Título: Pathobiology

Vol. 71

Páginas: 329-336

ISSN: 1015-2008

Editora: Karger

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 19 Citações

Outras Informações

ID Authenticus: P-000-DBE

DOI: 10.1159/000081729

Abstract (EN): Objective: To evaluate the immunoexpression pattern of E-cadherin, CD44std and the variant isoform v6 in normal squamous epithelium, low and high squamous intraepithelial lesions (SILs) and invasive squamous cell carcinomas (ISCCs) of the uterine cervix. The purpose was to determine whether any distinctive change in antigenic expression could contribute to the recognition of the earliest commitment to neoplasia and/or the onset of the invasive phenotype. Methods: Immunohistochemistry using the avidin- biotin indirect immunoperoxidase method was used to study the protein expression of epithelial cadherin (E-cadherin), cluster differentiation 44 (CD44), and the isoform v6 (CD44v6) in 124 human cervical samples ( 5 normal, 39 low-grade, 54 high-grade and 26 ISCCS) in formalin-fixed, paraffin-embedded tissue blocks. Results: Membranous expression of E-cadherin, CD44 and CD44v6 was preserved in normal squamous epithelium and in low-grade squamous intraepithelial lesions. A significant association was observed with the histological grade of the SILs and the immunoreactivity ( membranous versus cytoplasmic) pattern of E-cadherin ( p < 0.001), CD44std ( p = 0.027) and CD44v6 (p < 0.001). A loss of membranous staining and a progressive increase in cytoplasmic staining was observed from low to high grade SILs to ISCCs. Conclusions: Our study demonstrates that during the development of cervical lesions substantial qualitative ( subcellular localization-membrane to cytoplasmic) and quantitative alterations ( changes in expression) occur in the protein expression of E-cadherin, CD44, and CD44v6 in cervical cancer. The most striking observation was the decrease in membranous immunoreactivity and the progressive increase in cytoplasmic staining of E-cadherin, CD44 and CD44v6, relating to loss of differentiation as a consequence of neoplastic transformation. Copyright (C) 2004 S. Karger AG, Basel.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8