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Título: | Primary biliary cirrhosis PBC, antigen-presenting cells differ in their distribution in early and late stage PBC and involve the ductal... |
Fecha de publicación: | 1994 |
Editorial: | Murcia : F. Hernández |
ISSN: | 0213-3911 |
Materias relacionadas: | CDU::6 - Ciencias aplicadas::61 - Medicina |
Palabras clave: | Antigen presenting cells Primary biliary cirrhosis |
Resumen: | We have studied the distribution patterns of antigen-presenting cells (APCs) in different stages of primary biliary cirrhosis (PBC). 58% of cases with early PBC (stages I and 11) exhibited dendritic APCs (S-loo+, HLA-DR+, KiMlp+) in bile duct epithelia. In contrast, APCs, were not detected in ductular proliferations occurring in late PBC (stages I11 and IV), but occurred in portal tracts and piecemeal necroses. There was a correlation between the presence of APCs and HLA-DR expression in bile ducts but, in contrast to former studies. we noted a heterogeneous ductal HLA expression. These observations support the hypothesis that: 1) APC distribution in PBC may change as a function of stage, involving hepatic parenchyma in late PBC; 2) ductular epithelia may not represent a target for immune attack, because APCs do not accumulate in these structures; and 3) HLA expression in bile ducts may be heterogeneous, suggesting one mechanism why bile duct destruction in PBC does not take place in a synchronous way. |
Autor/es principal/es: | Rontogianni, D. Gerber, H. Zimmermann, Astrid |
Forma parte de: | Histology and histopathology |
URI: | http://hdl.handle.net/10201/18485 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 10 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol. 9, nº 2 (1994) |
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