Expression of CD1a by Langerhan’s Cells in Oral Lichen Planus - A Retrospective Analysis

Introduction: Langerhan’s Cells (LCs) are dendritic cells of the oral epithelium which play a role in a series of oral lesions from gingivitis to oral cancer. Oral Lichen Planus (OLP) is an oral mucosal T-lymphocyte mediated immunologic reaction to an unidentified putative antigen or allergen. Aim: The aim of this study was to quantify the presence of immature LCs in OLP comparing them with normal epithelium. Materials and Methods: A retrospective study using 30 of OLP cases were conducted. Immunohistochemistry was performed using polyclonal anti-CD1a antibodies to identify LCs in 10 cases of normal tissue and 30 samples of OLP. The distribution of LCs among lesional tissue and normal mucosa was analysed using Mann-Whitney U test. Results: LC population in OLP was significantly higher when compared to the normal epithelium (p<0.001). Conclusion: The increase in LCs indicates the active role played during the antigen detection in OLP and subsequent presentation to T-lymphocytes.

Abstract licence: CC BY-NC-ND

26 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.