title: Immunophenotypic analysis suggests that granuloma faciale is a gamma-interferon-mediated process.
abstract: Granuloma faciale (GF) is an uncommon inflammatory dermatosis with characteristic clinical and histologic features. Very little is known about its pathogenesis. We used a battery of immunoperoxidase lymphocyte markers to study the population of hematopoietic cells present in a case of GF. The majority of non-myelocytic hematopoietic cells present were T-helper lymphocytes. The cells stained strongly with antibodies against the interleukin-2 receptor and with anti-lymphocyte functional antigen (LFA 1 alpha) antibodies. Overlying keratinocytes did not stain with ICAM-1 or HLA-DR, which may account for the presence of the Grenz zone in granuloma faciale. These findings suggest that a gamma-interferon-mediated process may play some role in the pathogenesis of this disorder.
authors.affiliation: Department of Dermatology, Stanford University Medical Center, CA 94305.
authors.forename: B R
authors.initials: BR
authors.lastname: Smoller
authors.forename: J
authors.initials: J
authors.lastname: Bortz
mesh_terms: D000328:Adult; D015703:Antigens, CD / Q000032:analysis; D015815:Cell Adhesion Molecules / Q000032:analysis; D005148:Facial Dermatoses / Q000276:immunology*; D006099:Granuloma / Q000276:immunology*; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D007124:Immunoenzyme Techniques; D016130:Immunophenotyping; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma / Q000502:physiology*; D015603:Keratinocytes / Q000276:immunology; D016169:Lymphocyte Function-Associated Antigen-1 / Q000032:analysis; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D013194:Staining and Labeling
chemical_list: D015703:Antigens, CD; D015815:Cell Adhesion Molecules; D006684:HLA-DR Antigens; D016169:Lymphocyte Function-Associated Antigen-1; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma