Mucous membrane pemphigoid or cicatricial pemphigoid is a mucocutaneous blistering disease characterized by autoantibodies to different molecules in the basement membrane zone. Our objectives were to identify the target antigen recognized by sera from 20 untreated patients with pemphigoid disease limited to the oral cavity, and to determine the pathogenicity of autoantibodies in oral pemphigoid, with an organ culture model. We conducted indirect immunofluorescence, immunoblot, and immunoprecipitation assays, with accompanying absorption experiments, using normal human skin, conjunctiva and gingiva, bovine gingiva and a tumor cell line, which were reacted with sera from patients with oral pemphigoid, anti-alpha6 antibody, and control sera. Sera of oral pemphigoid patients selectively and specifically bound to human alpha6 integrin, a 120-kDa protein present in gingiva and the tumor cell line. Oral pemphigoid sera and anti-alpha6 antibody produced separation of epithelium from basement membrane (blister formation) of normal human buccal mucosa, after 48 hours, in organ culture.
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http://dx.doi.org/10.1177/00220345010800080601 | DOI Listing |
J Dent Sci
January 2025
Department of Oral and Maxillofacial Surgery, Kobe City Medical Center General Hospital, Kobe, Japan.
Am J Dermatopathol
February 2025
Department of Dermatology and Venereology, Faculty of Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria.
Pemphigus is a group of autoimmune bullous diseases mediated by autoantibodies most often of the immunoglobulin G class, subclasses immunoglobulin G1, and immunoglobulin G4 (IgG4), directed against desmosomal adhesion proteins of keratinocytes. This study aimed to evaluate IgG4 immunoreactivity on paraffin sections using immunohistochemistry in patients with pemphigus as a diagnostic test. Fifty formalin-fixed paraffin-embedded specimens from patients with pemphigus were selected.
View Article and Find Full Text PDFJ Dermatol
January 2025
Department of Dermatology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China.
Bullous pemphigoid (BP) is an acquired autoimmune bullous disease that often occurs in elderly patients. Some BP patients with early age of disease onset were observed to have difficulty in receiving applicable disease control. It remains challenging for clinicians to choose the appropriate treatment for these patients.
View Article and Find Full Text PDFCureus
December 2024
Dermatology, Corewell Health Farmington Hills Hospital, Farmington Hills, USA.
Dyshidrosiform bullous pemphigoid (DBP) is a rare variant of bullous pemphigoid (BP) that mainly affects elderly patients and presents with tense bullae formation on the palms, soles, or both palms and soles. This case report describes an 87-year-old woman who was evaluated in the hospital for a month-long erythematous and pruritic rash on most of her body that eventually manifested into tense blisters on the palms. DBP can pose a challenge to clinicians as it can resemble a variety of different vesicular diseases.
View Article and Find Full Text PDFViruses
December 2024
Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80131 Napoli, Italy.
The COVID-19 pandemic has encouraged the rapid development and licensing of vaccines against SARS-CoV-2. Currently, numerous vaccines are available on a global scale and are based on different mechanisms of action, including mRNA technology, viral vectors, inactive viruses, and subunit particles. Mass vaccination conducted worldwide has highlighted the potential development of side effects, including ones with skin involvement.
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