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Messingham KN, Crowe TP, Fairley JA. The Intersection of IgE Autoantibodies and Eosinophilia in the Pathogenesis of Bullous Pemphigoid. Front Immunol 2019; 10:2331. [PMID: 31636640 PMCID: PMC6787172 DOI: 10.3389/fimmu.2019.02331] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 09/16/2019] [Indexed: 12/13/2022] Open
Abstract
Bullous pemphigoid (BP) is an autoimmune blistering disease characterized by autoantibodies targeting cellular adhesion molecules. While IgE autoantibodies are occasionally reported in other autoimmune blistering diseases, BP is unique in that most BP patients develop an IgE autoantibody response. It is not known why BP patients develop self-reactive IgE and the precise role of IgE in BP pathogenesis is not fully understood. However, clinical evidence suggests an association between elevated IgE antibodies and eosinophilia in BP patients. Since eosinophils are multipotent effector cells, capable cytotoxicity and immune modulation, the putative interaction between IgE and eosinophils is a primary focus in current studies aimed at understanding the key components of disease pathogenesis. In this review, we provide an overview of BP pathogenesis, highlighting clinical and experimental evidence supporting central roles for IgE and eosinophils as independent mediators of disease and via their interaction. Additionally, therapeutics targeting IgE, the Th2 axis, or eosinophils are also discussed.
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Affiliation(s)
- Kelly N Messingham
- Department of Dermatology, The University of Iowa, Iowa City, IA, United States
| | - Tyler P Crowe
- Department of Dermatology, The University of Iowa, Iowa City, IA, United States
| | - Janet A Fairley
- Department of Dermatology, The University of Iowa, Iowa City, IA, United States.,Iowa City VA Medical Center, Iowa City, IA, United States
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Santi CG, Gripp AC, Roselino AM, Mello DS, Gordilho JO, Marsillac PFD, Porro AM. Consensus on the treatment of autoimmune bullous dermatoses: bullous pemphigoid, mucous membrane pemphigoid and epidermolysis bullosa acquisita - Brazilian Society of Dermatology. An Bras Dermatol 2019; 94:33-47. [PMID: 31166405 PMCID: PMC6544032 DOI: 10.1590/abd1806-4841.2019940207] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 01/30/2019] [Indexed: 02/06/2023] Open
Abstract
Bullous pemphigoid, mucous membrane pemphigoid and epidermolysis bullosa
acquisita are subepidermal autoimmune blistering diseases whose antigenic target
is located at the basement membrane zone. Mucous membrane pemphigoid and
epidermolysis bullosa acquisita can evolve with cicatricial mucosal involvement,
leading to respiratory, ocular and/or digestive sequelae with important
morbidity. For each of these dermatoses, a literature review covering all
therapeutic options was performed. A flowchart, based on the experience and
joint discussion among the authors of this consensus, was constructed to provide
treatment orientation for these diseases in Brazil. In summary, in the
localized, low-risk or non-severe forms, drugs that have immunomodulatory action
such as dapsone, doxycycline among others may be a therapeutic option. Topical
treatment with corticosteroids or immunomodulators may also be used. Systemic
corticosteroid therapy continues to be the treatment of choice for severe forms,
especially those involving ocular, laryngeal-pharyngeal and/or esophageal
mucosal involvement, as may occur in mucous membrane pemphigoid and
epidermolysis bullosa acquisita. Several immunosuppressants are used as adjuvant
alternatives. In severe and recalcitrant cases, intravenous immunoglobulin is an
alternative that, while expensive, may be used. Immunobiological drugs such as
rituximab are promising drugs in this area. Omalizumab has been used in bullous
pemphigoid.
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Affiliation(s)
- Claudia Giuli Santi
- Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Alexandre Carlos Gripp
- Department of Dermatology, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana Maria Roselino
- Department of Medical Clinics, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Danielle Santana Mello
- Department of Dermatology, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Paula Figueiredo de Marsillac
- Department of Dermatology, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Adriana Maria Porro
- Department of Dermatology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
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