title: Spatial distribution of Langerhans' cells and T-lymphocyte subpopulations in human tympanic membrane and aural cholesteatoma.
abstract: Immunohistochemical analysis of human cholesteatoma matrices revealed the presence of Langerhans' cells and T-lymphocytes. Through cell-to-cell interaction, Langerhans' cells probably play a key role in skin-related disorders, including cholesteatomas. They probably originate from a mobile cell population of monocyte origin and migrate into and out of the body's lining. Their custodial function is often carried out in close relation with T-lymphocytes. Monoclonal antibodies against Langerhans' cells and T-lymphocyte membrane receptors reveal the presence of these cell populations in cholesteatoma matrices but not in the tympanic membrane. Langerhans' cells and T-cell "traffic" through cholesteatomas are discussed in relation to the pathogenesis, natural course and recurrence of cholesteatomas. Through immunopathologic evaluation the clinical aggressiveness of a cholesteatoma may become predictable. It may even have consequences for the future handling of cholesteatomas.
mesh_terms: D000911:Antibodies, Monoclonal; D002781:Cholesteatoma / Q000473:pathology*; D004427:Ear Diseases / Q000473:pathology*; D006801:Humans; D007124:Immunoenzyme Techniques; D007801:Langerhans Cells / Q000166:cytology* / Q000473:pathology; D013601:T-Lymphocytes / Q000166:cytology*; D006377:T-Lymphocytes, Helper-Inducer / Q000166:cytology; D050378:T-Lymphocytes, Regulatory / Q000166:cytology; D014432:Tympanic Membrane / Q000166:cytology* / Q000473:pathology
chemical_list: D000911:Antibodies, Monoclonal