Diagnostic relevance of Langerin detection in cells from bronchoalveolar lavage of patients with pulmonary Langerhans cell histiocytosis, sarcoidosis and idiopathic pulmonary fibrosis

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• 作者：Karel Smetana ; Otakar Mě?i?ka ; Sem Saeland ; Ji?í Homolka ; Ji?í Brabec and Hans-Joachim Gabius
• 关键词：Fibrosis ; Histiocytosis ; Immunohistochemistry ; Langerin (CD207) ; Lectin ; Neoglycoprotein ; Sarcoidosis
• 刊名：Virchows Archiv
• 出版年：2004
• 出版时间：February 2004
• 年：2004
• 卷：444
• 期：2
• 页码：171-174
• 全文大小：211 KB
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Pathology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-2307

文摘

The diagnosis of pulmonary Langerhans cell histiocytosis might be refined by demonstrating reliability of a new cell marker, i.e., Langerin (CD207), used on bronchoalveolar lavage fluid. For this purpose, we collected material from patients with this disease and also with sarcoidosis and idiopathic pulmonary fibrosis as controls. In addition to the immunocytochemical detection of Langerin, we examined the expression profiles of CD1a and the macrophage tandem-repeat mannose receptor (CD206). To test accessibility of Langerin, a C-type lectin, for mannosides, we employed reverse lectin histochemistry using mannose-containing neoglycoproteins. The analysis revealed a significantly increased percentage of CD1a- and Langerin-positive cells in pulmonary Langerhans cell histiocytosis in comparison with both other studied diseases. No expression of the 175-kDa mannose-binding lectin (CD206) in Langerhans cells was observed. Evidently, binding sites on the cells were not accessible for the mannose-containing neoglycoligand. These results provide evidence for the usefulness of Langerin-directed immuno- and glycohistochemical monitoring of bronchoalveolar lavage fluid in the diagnosis of pulmonary Langerhans cell histiocytosis.