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Caux F, Patsatsi A, Karakioulaki M, Antiga E, Baselga E, Borradori L, Caproni M, Cardones AR, Chandran NS, Dräger S, Drenovska K, Goebeler M, Günther C, Hofmann SC, Ioannides D, Joly P, Marinović B, Mariotti EB, Marzano AV, Morel KD, Murrell DF, Prost C, Sárdy M, Setterfield J, Skiljevic D, Uzun S, Vassileva S, Zambruno G, Schmidt E. S2k guidelines on diagnosis and treatment of linear IgA dermatosis initiated by the European Academy of Dermatology and Venereology. J Eur Acad Dermatol Venereol 2024; 38:1006-1023. [PMID: 38421060 DOI: 10.1111/jdv.19880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/19/2024] [Indexed: 03/02/2024]
Abstract
INTRODUCTION Linear IgA dermatosis (LAD) is a rare subepidermal autoimmune bullous disease (AIBD) defined by predominant or exclusive immune deposits of immunoglobulin A at the basement membrane zone of skin or mucous membranes. This disorder is a rare, clinically and immunologically heterogeneous disease occurring both in children and in adults. The aim of this project is to present the main clinical features of LAD, to propose a diagnostic algorithm and provide management guidelines based primarily on experts' opinion because of the lack of large methodologically sound clinical studies. METHODS These guidelines were initiated by the European Academy of Dermatology and Venereology (EADV) Task Force Autoimmune Bullous Diseases (AIBD). To achieve a broad consensus for these S2k consensus-based guidelines, a total of 29 experts from different countries, both European and non-European, including dermatologists, paediatric dermatologists and paediatricians were invited. All members of the guidelines committee agreed to develop consensus-based (S2k) guidelines. Prior to a first virtual consensus meeting, each of the invited authors elaborated a section of the present guidelines focusing on a selected topic, based on the relevant literature. All drafts were circulated among members of the writing group, and recommendations were discussed and voted during two hybrid consensus meetings. RESULTS The guidelines summarizes evidence-based and expert opinion-based recommendations (S2 level) on the diagnosis and treatment of LAD. CONCLUSION These guidelines will support dermatologists to improve their knowledge on the diagnosis and management of LAD.
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Affiliation(s)
- Frédéric Caux
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, Groupe Hospitalier Paris Seine-Saint-Denis, AP-HP and University Paris 13, Bobigny, France
| | - Aikaterini Patsatsi
- Autoimmune Bullous Diseases Unit, 2nd Department of Dermatology, Aristotle University School of Medicine, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Meropi Karakioulaki
- Department of Dermatology and Venereology, Medical Center, University Hospital Freiburg, Freiburg, Germany
| | - Emiliano Antiga
- Department of Health Sciences, Section of Dermatology, Azienda USL Toscana Centro, Rare Diseases Unit, European Reference Network-Skin Member, University of Florence, Florence, Italy
| | - Eulalia Baselga
- Department of Dermatology, Hospital Sant Joan de Deu, Barcelona, Spain
| | - Luca Borradori
- Department of Dermatology, University of Bern, Inselspital, Berne, Switzerland
| | - Marzia Caproni
- Department of Health Sciences, Section of Dermatology, Azienda USL Toscana Centro, Rare Diseases Unit, European Reference Network-Skin Member, University of Florence, Florence, Italy
| | - Adela R Cardones
- Division of Dermatology, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Nisha Suyien Chandran
- Division of Dermatology, Department of Medicine, National University Hospital, Singapore, Singapore
| | - Sören Dräger
- Department of Dermatology, Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Kossara Drenovska
- Department of Dermatology and Venereology, University Hospital "Alexandrovska", Medical University-Sofia, Sofia, Bulgaria
| | - Matthias Goebeler
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
| | - Claudia Günther
- Department of Dermatology, University Hospital, Technical University Dresden, Dresden, Germany
| | - Silke C Hofmann
- Department of Dermatology, Allergy and Dermatosurgery, Helios University Hospital Wuppertal, University Witten-Herdecke, Wuppertal, Germany
| | - Dimitrios Ioannides
- 1st Department of Dermatology, Aristotle University School of Medicine, Hospital of Skin and Venereal Diseases, Thessaloniki, Greece
| | - Pascal Joly
- Department of Dermatology, Rouen University Hospital, INSERM 1234, Normandie University, Rouen, France
| | - Branka Marinović
- Department of Dermatology and Venereology, University Hospital Centre Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Elena Biancamaria Mariotti
- Department of Health Sciences, Section of Dermatology, Azienda USL Toscana Centro, Rare Diseases Unit, European Reference Network-Skin Member, University of Florence, Florence, Italy
| | - Angelo Valerio Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Kimberly D Morel
- Departments of Dermatology and Pediatrics at Columbia University Medical Center, Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Dedee F Murrell
- Department of Dermatology, St George Hospital, University of New South Wales, Sydney, New South Wales, Australia
| | - Catherine Prost
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, Groupe Hospitalier Paris Seine-Saint-Denis, AP-HP and University Paris 13, Bobigny, France
| | - Miklós Sárdy
- Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, Budapest, Hungary
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
| | - Jane Setterfield
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Centre for Host-Microbiome Interactions, King's College London Faculty of Dentistry, Oral & Craniofacial Sciences, London, UK
| | - Dusan Skiljevic
- Department of Dermatovenereology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Soner Uzun
- Department of Dermatology, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Snejina Vassileva
- Department of Dermatology and Venereology, University Hospital "Alexandrovska", Medical University-Sofia, Sofia, Bulgaria
| | - Giovanna Zambruno
- Genodermatosis Unit, Translational Pediatrics and Clinical Genetics Research Division, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Enno Schmidt
- Department of Dermatology, Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
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Cheraghlou S, Levy LL. Fixed drug eruptions, bullous drug eruptions, and lichenoid drug eruptions. Clin Dermatol 2020; 38:679-692. [PMID: 33341201 DOI: 10.1016/j.clindermatol.2020.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Drug reactions are among the most common reasons for inpatient dermatology consultation. These reactions are important to identify because discontinuation of the offending agent may lead to disease remission. With the rising use of immunomodulatory and targeted therapeutics in cancer care and the increased incidence in associated reactions to these drugs, the need for accurate identification and treatment of such eruptions has led to the development of the "oncodermatology" subspecialty of dermatology. Immunobullous drug reactions are a dermatologic urgency, with patients often losing a significant proportion of their epithelial barrier; early diagnosis is critical in these cases to prevent complications and worsening disease. Lichenoid drug reactions have myriad causes and can take several months to occur, often leading to difficulties identifying the offending drug. Fixed drug eruptions can often mimic other systemic eruptions, such as immunobullous disease and Stevens-Johnson syndrome, and must be differentiated from them for effective therapy to be initiated. We review the clinical features, pathogenesis, and treatment of immunobullous, fixed, and lichenoid drug reactions with attention to key clinical features and differential diagnosis.
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Affiliation(s)
| | - Lauren L Levy
- Private Practice, New York, New York, USA; Private Practice, Westport, Connecticut, USA.
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Znamenskaya LF, Chikin VV, Nefedova MA. Linear IgA bullous dermatosis. VESTNIK DERMATOLOGII I VENEROLOGII 2018. [DOI: 10.25208/0042-4609-2018-94-6-42-51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Aim: to present a clinical case of linear IgA bullous dermatosis.Materials and methods. A 44 years old patient complaining of skin rashes on the trunk and extremities, accompanied by severe itching was examined. We carried out a morphological investigation of biopsy samples derived from the lesion and apparently unaffected skin areas using the method of indirect immunofluorescence.Results. The patient having rashes in the form of multiple vesicles and small bubbles with a tight cover, which had been grouped into figures resembling pearl necklaces, demonstrated the presence of focal subepidermal cracks (subepidermal bubble in one location), as well as a linear deposition of IgA along the epidermal basement membrane. According to the clinical picture and following the histological and immunofluorescent investigation of skin biopsies, the patient was diagnosed with linear IgA bullous dermatosis. Lesion regression was achieved as a result of systemic therapy with prednisolone at a dose of 50 mg per day.Conclusion. The diagnosis of linear IgA bullous dermatosis should be made on the basis of skin biopsy investigation by the method of indirect immunofluorescence. Systemic glucocorticosteroids are seen as an effective approach to the treatment of such patients.
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Gottlieb J, Ingen-Housz-Oro S, Alexandre M, Grootenboer-Mignot S, Aucouturier F, Sbidian E, Tancrede E, Schneider P, Regnier E, Picard-Dahan C, Begon E, Pauwels C, Cury K, Hüe S, Bernardeschi C, Ortonne N, Caux F, Wolkenstein P, Chosidow O, Prost-Squarcioni C. Idiopathic linear IgA bullous dermatosis: prognostic factors based on a case series of 72 adults. Br J Dermatol 2017; 177:212-222. [PMID: 27995619 DOI: 10.1111/bjd.15244] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND Linear IgA bullous dermatosis (LABD) is a clinically and immunologically heterogeneous, subepidermal, autoimmune bullous disease (AIBD), for which the long-term evolution is poorly described. OBJECTIVES To investigate the clinical and immunological characteristics, follow-up and prognostic factors of adult idiopathic LABD. METHODS This retrospective study, conducted in our AIBD referral centre, included adults, diagnosed between 1995 and 2012, with idiopathic LABD, defined as pure or predominant IgA deposits by direct immunofluorescence. Clinical, histological and immunological findings were collected from charts. Standard histology was systematically reviewed, and indirect immunofluorescence (IIF) on salt-split skin (SSS) and immunoblots (IBs) on amniotic membrane extracts using anti-IgA secondary antibodies were performed, when biopsies and sera obtained at diagnosis were available. Prognostic factors for complete remission (CR) were identified using univariate and multivariate analyses. RESULTS Of the 72 patients included (median age 54 years), 60% had mucous membrane (MM) involvement. IgA IIF on SSS was positive for 21 of 35 patients tested; 15 had epidermal and dermal labellings. Immunoelectron microscopy performed on the biopsies of 31 patients labelled lamina lucida (LL) (26%), lamina densa (23%), anchoring-fibril zone (AFz) (19%) and LL+AFz (23%). Of the 34 IgA IBs, 22 were positive, mostly for LAD-1/LABD97 (44%) and full-length BP180 (33%). The median follow-up was 39 months. Overall, 24 patients (36%) achieved sustained CR, 19 (29%) relapsed and 35% had chronic disease. CR was significantly associated with age > 70 years or no MM involvement. No prognostic immunological factor was identified. CONCLUSIONS Patients with LABD who are < 70 years old and have MM involvement are at risk for chronic evolution.
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Affiliation(s)
- J Gottlieb
- Dermatology Department, APHP, Henri-Mondor Hospital, Créteil, France.,Referral Center for Autoimmune Blistering Diseases, Île-de-France, France
| | - S Ingen-Housz-Oro
- Dermatology Department, APHP, Henri-Mondor Hospital, Créteil, France.,Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France
| | - M Alexandre
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Avicenne Hospital, Bobigny, France
| | - S Grootenboer-Mignot
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Department of Autoimmunity and Hypersensitivity, APHP, Bichat Hospital, Paris, France
| | - F Aucouturier
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Immunology Department, APHP, Saint-Louis Hospital, Paris, France
| | - E Sbidian
- Dermatology Department, APHP, Henri-Mondor Hospital, Créteil, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France.,Inserm, Centre d'Investigation Clinique 1430, Créteil, France
| | - E Tancrede
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Saint-Louis Hospital, Paris, France
| | - P Schneider
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Saint-Louis Hospital, Paris, France.,Pathology Department, APHP, Saint-Louis Hospital, Paris, France
| | - E Regnier
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Tarnier Hospital, Paris, France
| | - C Picard-Dahan
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Bichat Hospital, Paris, France
| | - E Begon
- Dermatology Department, René-Dubos Hospital, Pontoise, France
| | - C Pauwels
- Dermatology Department, Saint-Germain Hospital, Saint-Germain, France
| | - K Cury
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Tenon Hospital, Paris, France
| | - S Hüe
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France.,Immunology Department, APHP, Henri-Mondor Hospital, Créteil, France
| | - C Bernardeschi
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Pathology Department, APHP, Saint-Louis Hospital, Paris, France
| | - N Ortonne
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France.,Pathology Department, APHP, Henri-Mondor Hospital, Créteil, France
| | - F Caux
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Avicenne Hospital, Bobigny, France.,Université Paris 13, Bobigny, France
| | - P Wolkenstein
- Dermatology Department, APHP, Henri-Mondor Hospital, Créteil, France.,Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France
| | - O Chosidow
- Dermatology Department, APHP, Henri-Mondor Hospital, Créteil, France.,Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Université Paris-Est Créteil Val de Marne, UPEC, DHU VIC, IRM, EA 7379 EpiDermE, Créteil, France.,Inserm, Centre d'Investigation Clinique 1430, Créteil, France
| | - C Prost-Squarcioni
- Referral Center for Autoimmune Blistering Diseases, Île-de-France, France.,Dermatology Department, APHP, Avicenne Hospital, Bobigny, France.,Université Paris 13, Bobigny, France.,Pathology Department, APHP, Avicenne Hospital, Bobigny, France
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Kartan S, Shi VY, Clark AK, Chan LS. Paraneoplastic Pemphigus and Autoimmune Blistering Diseases Associated with Neoplasm: Characteristics, Diagnosis, Associated Neoplasms, Proposed Pathogenesis, Treatment. Am J Clin Dermatol 2017; 18:105-126. [PMID: 27878477 DOI: 10.1007/s40257-016-0235-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Autoimmune paraneoplastic and neoplasm-associated skin syndromes are characterized by autoimmune-mediated cutaneous lesions in the presence of a neoplasm. The identification of these syndromes provides information about the underlying tumor, systemic symptoms, and debilitating complications. The recognition of these syndromes is particularly helpful in cases of skin lesions presenting as the first sign of the malignancy, and the underlying malignancy can be treated in a timely manner. Autoimmune paraneoplastic and neoplasm-associated bullous skin syndromes are characterized by blister formation due to an autoimmune response to components of the epidermis or basement membrane in the context of a neoplasm. The clinical manifestations, histopathology and immunopathology findings, target antigens, associated neoplasm, current diagnostic criteria, current understanding of pathogenesis, and treatment options for a selection of four diseases are reviewed. Paraneoplastic pemphigus manifests with clinically distinct painful mucosal erosions and polymorphic cutaneous lesions, and is often associated with lymphoproliferative neoplasm. In contrast, bullous pemphigoid associated with neoplasm presents with large tense subepidermal bullae of the skin, and mild mucosal involvement, but without unique clinical features. Mucous membrane pemphigoid associated with neoplasm is a disorder of chronic subepithelial blisters that evolve into erosions and ulcerations that heal with scarring, and involves stratified squamous mucosal surfaces. Linear IgA dermatosis associated with neoplasm is characterized by annularly grouped pruritic papules, vesicles, and bullae along the extensor surfaces of elbows, knees, and buttocks. Physicians should be aware that these autoimmune paraneoplastic and neoplasm-associated syndromes can manifest distinct or similar clinical features as compared with the non-neoplastic counterparts.
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Magro CM, Roberts-Barnes J, Crowson AN. Direct Immunofluorescence Testing in the Diagnosis of Immunobullous Disease, Collagen Vascular Disease, and Vascular Injury Syndromes. Dermatol Clin 2012; 30:763-98, viii. [DOI: 10.1016/j.det.2012.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
Linear immunoglobulin A (IgA) bullous dermatosis, also known as linear IgA disease, is an autoimmune mucocutaneous disorder characterized by subepithelial bullae, with IgA autoantibodies directed against several different antigens in the basement membrane zone. Its immunopathologic characteristic resides in the presence of a continuous linear IgA deposit along the basement membrane zone, which is clearly visible on direct immunofluorescence. This disorder shows different clinical features and distribution when adult-onset of linear IgA disease is compared with childhood-onset. Diagnosis is achieved via clinical, histopathologic, and immunopathologic examinations. Two common therapies are dapsone and sulfapyridine, which reduce the inflammatory response and achieve disease remission in a variable period of time.
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Affiliation(s)
- Giulio Fortuna
- Department of Dermatology, Program in Epithelial Biology, Stanford University School of Medicine, CA 94305, USA
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8
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Mintz EM, Morel KD. Clinical features, diagnosis, and pathogenesis of chronic bullous disease of childhood. Dermatol Clin 2011; 29:459-62, ix. [PMID: 21605812 DOI: 10.1016/j.det.2011.03.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Chronic bullous disease of childhood (CBDC) is the most common acquired autoimmune blistering disorder of childhood and is characterized by linear IgA staining of the basement membrane zone on direct immunofluorescence. This autoimmune attack on structural proteins, usually proteolytic fragments of collagen XVII, renders the dermal-epidermal junction prone to blistering. Diagnosis is confirmed by characteristic histology and direct immunofluorescence. Prognosis is generally favorable, with spontaneous remission usually occurring by puberty; however, cases with severe morbidity and cases persisting into adulthood have been reported. This article discusses the clinical features, diagnosis, and pathogenesis of CBDC in more detail.
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Affiliation(s)
- Emily M Mintz
- Department of Dermatology, Columbia University, 161 Fort Washington Avenue, 12th Floor, New York, NY 10032, USA
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Ingen-Housz-Oro S. Dermatose à IgA linéaire : revue de la littérature. Ann Dermatol Venereol 2011; 138:214-20. [DOI: 10.1016/j.annder.2011.01.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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10
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Cauza K, Hinterhuber G, Sterniczky B, Brugger K, Pieczkowski F, Karlhofer F, Wolff K, Foedinger D. Unusual clinical manifestation of linear IgA dermatosis: A report of two cases. J Am Acad Dermatol 2004; 51:S112-7. [PMID: 15280828 DOI: 10.1016/j.jaad.2004.01.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Linear IgA dermatosis is a rare autoimmune bullous skin disease with subepidermal blister formation and linear IgA deposits along the basement membrane zone. We describe two female patients showing erythematous annular plaques with scaling at the margin, strictly localized to the palms in one patient, and also found on the soles and buttocks in the second patient. Histology showed numerous neutrophils in the dermis with an admixture of eosinophils, some subepidermal clefting, and occasional papillary microabscesses. Direct immunofluorescence and immunoelectron microscopy revealed in vivo IgA deposition along the basement membrane zone. One patient cleared after treatment with dapsone. The second patient did not respond to dapsone alone and various immunosuppressive treatment regimens. Considerable improvement was achieved with intravenous immunoglobulin therapy combined with corticosteroid and dapsone.
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Affiliation(s)
- Karla Cauza
- Division of General Dermatology, Department of Dermatology, University of Vienna, School of Medicine, Austria.
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Allen J, Wojnarowska F. Linear IgA disease: the IgA and IgG response to dermal antigens demonstrates a chiefly IgA response to LAD285 and a dermal 180-kDa protein. Br J Dermatol 2004; 149:1055-8. [PMID: 14632815 DOI: 10.1111/j.1365-2133.2003.05647.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Linear IgA disease (LAD) of adults and children is mediated by IgA antibodies that target proteins of the epithelial adhesion complex. Most studies have concentrated on the epidermal-associated antigens; the dermal antigens remain unresolved. OBJECTIVES To determine the dermal antigen repertoire of IgA and IgG antibodies in LAD. METHODS Immunoblotting was carried out on salt-split and urea-extracted dermal skin extracts with IgA antibodies (63 adult and 34 childhood sera) and with IgG antibodies (49 adult and 18 childhood sera). RESULTS Antigens were identified by IgA (61%), IgG (27%) and by both antibody isotypes (19%). LAD285 and an antigen of 180 kDa were the major dermal antigens identified, and antigens of 230 kDa, collagen VII and a protein under 100 kDa were identified less commonly. IgA autoantibodies from adults bound single antigens more frequently than multiple antigens; from children they bound single and multiple antigens equally. The binding of multiple antigens was, however, more common in children than adults. The IgG response was weaker. The 180-kDa antigen was the main IgG dermal target, and with a single exception, IgG autoantibodies targeted single antigens. CONCLUSIONS There was an IgA and IgG response to dermal antigens in LAD; however, the dual antibody response was limited. The antibody response to LAD285 and a 180-kDa antigen (probably BP180) suggests that intermolecular epitope spreading of the antigens associated with the extracellular matrix/dermal components of the basement membrane contributes to the immunopathology of the disease. The restricted IgG response suggests that dermal-binding IgG autoantibodies are not pathologically significant.
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Affiliation(s)
- J Allen
- Department of Dermatology, The Oxford Radcliffe Hospital, Oxford OX3 7LJ, UK
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12
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Allen J, Wojnarowska F. Linear IgA disease: the IgA and IgG response to the epidermal antigens demonstrates that intermolecular epitope spreading is associated with IgA rather than IgG antibodies, and is more common in adults. Br J Dermatol 2003; 149:977-85. [PMID: 14632802 DOI: 10.1111/j.1365-2133.2003.05648.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Linear IgA disease (LAD; adult and childhood) is a dapsone-responsive, acquired immunobullous disorder mediated by IgA antibodies directed at target antigens within the epithelial basement membrane. These antigens have not been completely characterized. OBJECTIVES To identify the target antigens in LAD, and to correlate these with the antibody isotype. METHODS We used 101 LAD sera without IgG antibodies detected by indirect immunofluorescence. The sera were analysed by immunoblotting for IgA (65 adults and 36 children) and IgG (61 adults and 34 children) autoantibodies, on salt-split, urea-extracted epidermal tissue extracts. RESULTS Antigens were targeted in LAD by IgA antibodies (54 adults and 23 children), IgG antibodies (34 adults and 19 children), and both isotypes (30 adults and 16 children). Three major antigens were recognized by IgA antibodies: LAD285 (22 adults and three children), BP230 (30 adults and eight children) and BP180 (collagen XVII), including the 97-kDa ectodomain (52 adults and 20 children). Seven 'minor' antigens were occasionally detected (18 adults and 13 children). IgA antibodies bound multiple antigens (33 adults and nine children) more frequently than single antigens (21 adults and 14 children), but the binding to multiple antigens was more restricted in children than in adults. IgG antibodies mainly bound a single antigen (29 adults and 16 children), predominantly BP180. CONCLUSIONS There was variation in the autoantibody response within the disease and the patient, with regard to target molecules and autoantibody class. The finding that IgG as well as IgA autoantibodies predominantly target BP180 supports a pivotal role for collagen XVII in adult and childhood LAD. The IgG response was very restricted compared with IgA autoantibodies (P < 0.01). Autoantibodies from children had a more restricted antigen repertoire than from adults (P < 0.05). Epitope spreading is common in LAD and is affected by the class of autoantibody and age of the patient.
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Affiliation(s)
- J Allen
- Department of Dermatology, The Oxford Radcliffe Hospital, Oxford OX3 7LJ, UK
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13
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Allen J, Phan TT, Hughes MA, Cherry GW, Wojnarowska F. The cellular origins of the linear IgA disease target antigens: an indirect immunofluorescence study using cultured human keratinocytes and fibroblasts. Br J Dermatol 2003; 148:945-53. [PMID: 12786825 DOI: 10.1046/j.1365-2133.2003.05313.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Linear IgA disease (LAD) is an IgA-mediated subepidermal immunobullous disease of adults and children, with heterogeneous immunopathology. Objectives To investigate to what extent the cellular origins of the target antigens account for the heterogeneity of the immune response in LAD. METHODS Forty-nine adult and 33 childhood LAD sera were studied. Immunofluorescence was carried out to determine the expression of the LAD antigens by normal human keratinocytes, fibroblasts and mixed cultures of keratinocytes and fibroblasts. Immunoblotting was performed to determine the localization of the LAD target antigens in tissue extracts (48 adult and 31 childhood sera) and cell extracts (21 adult and 10 childhood sera). RESULTS Thirty-one adult and 13 childhood LAD sera bound proteins expressed by human keratinocytes; of these sera, 15 adult and four childhood LAD sera also recognized proteins expressed by fibroblasts. A single adult serum was positive on fibroblasts alone. Seventeen adult and 20 childhood sera were negative on both cell types. There was a modest increase (9%) in the detection of the IgA autoantibodies on keratinocytes and fibroblasts grown together in mixed culture. Immunoblotting showed that the LAD target antigens could be detected in cell as well as in tissue extracts. CONCLUSIONS Our results have shown that normal human keratinocytes and fibroblasts in culture express the LAD target antigens. LAD sera (with a single exception) bound antigens expressed by keratinocytes alone or by both keratinocytes and fibroblasts. The principal pattern of expression in keratinocytes was cytoplasmic, similar to that demonstrated by polyclonal antibodies to the 180-kDa bullous pemphigoid antigen (BP180). This reflects the pivotal role of BP180 in LAD. The finding that LAD antigens are expressed by both human keratinocytes and fibroblasts in culture may explain the heterogeneity of the target antigens, and may be a contributory factor in the immunopathology of the disease.
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Affiliation(s)
- J Allen
- Department of Dermatology and The Wound Healing Institute, The Oxford Radcliffe Hospital, Oxford OX3 7LJ, UK
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14
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Abstract
Tea tree oil dermatitis is an increasingly common finding, reflecting the strong demand for natural remedies and aromatic substances. Linear immunoglobulin A (IgA) disease is a rare acquired subepidermal blistering disorder, characterized by basement membrane zone IgA deposition. We describe a patient in whom linear IgA disease appears to have been precipitated by a contact reaction to tea tree oil.
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Affiliation(s)
- C M Perrett
- Department of Dermatology, Ealing Hospital, Middlesex, UK.
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15
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Karpouzis A, Vamvassakis E, Stavrianeas N, Koumantaki-Mathioudaki E, Karpouzi M, Vareltzides A. Ultrastructural immunocytochemistry of autoimmune bullous diseases. Australas J Dermatol 2002; 43:113-9. [PMID: 11982567 DOI: 10.1046/j.1440-0960.2002.00571.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Advanced immunopathological assays have been developed to elucidate the pathophysiology and provide more precise nosological definitions of the immunobullous diseases. Forty-seven patients suffering from autoimmune bullous diseases (intra- or subepidermal) were studied by immunoelectron microscopy (direct and indirect). Peroxidase staining was revealed by diaminobenzidine (determination of immune deposit location) in the majority of the cases of subepidermal bullous diseases, but in less than half of the cases of intraepidermal bullous diseases. Immunoelectron microscopy features contributed in verifying the diagnosis of rare entities such as cicatricial pemphigoid, paraneoplastic autoimmune bullous disease, linear IgA disease and epidermolysis bullosa acquisita.
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Affiliation(s)
- Anthony Karpouzis
- Department of Dermatology, A Sygros Hospital, School of Medicine, National University of Athens, Greece
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16
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Lin MS, Fu CL, Olague-Marchan M, Hacker MK, Zillikens D, Giudice GJ, Fairley JA. Autoimmune responses in patients with linear IgA bullous dermatosis: both autoantibodies and T lymphocytes recognize the NC16A domain of the BP180 molecule. Clin Immunol 2002; 102:310-9. [PMID: 11890718 DOI: 10.1006/clim.2001.5177] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Linear IgA bullous disease (LABD) is an autoimmune skin disease characterized by subepidermal blisters and IgA autoantibodies directed against the epidermal basement membrane zone (BMZ) of the skin. Various antigens have been identified as targets of IgA autoantibodies including BP180, a type II glycoprotein that spans the BMZ and lamina lucida. Previously, we have identified a subset of LABD patients whose sera contained IgA antibodies against the 16th noncollagenous (NC16A) domain of BP180. NC16A was previously shown to harbor epitopes that are recognized by both autoantibodies and T cells from patients with bullous pemphigoid and herpes gestationis and is thought to be associated with the development of these immunobullous diseases. The aim of this study was to determine whether T lymphocytes from LABD patients with anti-NC16A IgA autoantibodies respond to epitopes in the same region of the BP180 protein. Indeed, of the four LABD patients in our study, all had T cells that specifically proliferated in response to NC16A. Moreover, two subfragments of NC16A were identified as the predominant targets of LABD T cells. Further analysis of T cell lines and clones derived from these patients revealed that these cells express a CD4 memory T cell phenotype and secrete a Th1/Th2 mixed-cytokine profile, characteristics similar to those of T cells in bullous pemphigoid patients. Our data suggest that the BP180 protein, typically the NC16A region, is the common target of both cellular and humoral immune responses in some LABD patients. This information helps to further elucidate the autoimmune mechanisms in this disease.
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Affiliation(s)
- Mong-Shang Lin
- Department of Dermatology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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17
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Palmer RA, Ogg G, Allen J, Banerjee A, Ryatt KS, Ratnavel R, Wojnarowska F. Vancomycin-induced linear IgA disease with autoantibodies to BP180 and LAD285. Br J Dermatol 2001; 145:816-20. [PMID: 11736908 DOI: 10.1046/j.1365-2133.2001.04492.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Linear IgA disease (LAD) is an acquired autoimmune subepidermal bullous disease characterized by the linear deposition of IgA at the basement membrane zone. A minority of cases are induced by drugs, of which the most frequently implicated is vancomycin. The target antigens in idiopathic LAD are heterogeneous, but have not previously been reported in vancomycin-induced LAD. We report three cases, and in two of these we investigated the target antigens. In both we identified IgA antibodies to LAD285 and IgA and IgG antibodies (dual response) to BP180.
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Affiliation(s)
- R A Palmer
- Department of Dermatology, Royal South Hants Hospital, Southampton SO14 OYG, UK.
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18
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Affiliation(s)
- S V Guide
- Department of Dermatology, Stanford University School of Medicine, (M.P.M.), Stanford, California, USA
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19
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Affiliation(s)
- H H Pas
- Center for Blistering Skin Diseases, Department of Dermatology, University Hospital, Groningen, The Netherlands.
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20
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21
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Brenner S, Mashiah J. Autoimmune blistering diseases in children: signposts in the process of evaluation. Clin Dermatol 2000; 18:711-24. [PMID: 11173206 DOI: 10.1016/s0738-081x(00)00154-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S Brenner
- Department of Dermatology, Tel Aviv Sourasky Medical Center, and Sackler Faculty of Medicine, Tel Aviv University, Israel
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22
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Olivry T, Dunston SM, Fahey M, Nguyen N, Marinkovich MP. Autoantibodies against the processed ectodomain of collagen XVII (BPAG2, BP180) define a canine homologue of linear IgA disease of humans. Vet Pathol 2000; 37:302-9. [PMID: 10896391 DOI: 10.1354/vp.37-4-302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Linear IgA disease (LAD) is an acquired autoimmune subepidermal blistering dermatosis that affects human children and adults. In contrast to bullous pemphigoid, in which autoantibodies recognize transmembrane type XVII collagen (BP180, BPAG2), LAD is associated with skin-fixed and circulating IgA autoantibodies that target LAD-1, the processed extracellular form of type XVII collagen. An immunologic homologue of LAD in humans was identified in two dogs according to the following criteria: 1) erosive, ulcerative, and crusted lesions seen on the face, in the oral cavity, and on the extremities, 2) dermoepidermal clefting present in the basement membrane lamina lucida without inflammation or with mild neutrophilic infiltration, 3) basement membrane-fixed IgG and/or IgA antibodies, and 4) circulating IgA and IgG autoantibodies that target the 120-kd soluble protein LAD-1. The present study establishes unequivocally the existence of a naturally occurring canine model of LAD of humans.
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Affiliation(s)
- T Olivry
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh 27606, USA.
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23
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Fujimoto W, Ohtsu T, Toi Y, Nakanishi G, Arata J. Linear IgA disease with IgA antibodies directed against 200- and 280-kDa epidermal antigens. Br J Dermatol 2000; 142:1213-8. [PMID: 10848750 DOI: 10.1046/j.1365-2133.2000.03553.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report an 80-year-old man with the lamina lucida type of linear IgA disease, with IgA autoantibodies reactive with 200-kDa and 280-kDa epidermal proteins. The patient presented with widespread bullous lesions on his trunk and extremities without mucosal involvement. Histopathology of lesional skin showed a subepidermal blister with papillary microabscesses of neutrophils and a few eosinophils. Direct immunofluorescence microscopy of perilesional skin showed linear deposits of IgA and C3 at the basement membrane zone. The patient's serum contained IgA autoantibodies that bound exclusively to the epidermal side of 1 mol L-1 NaCl split skin as determined by indirect immunofluorescence microscopy. Circulating IgA autoantibodies to 200- and 280-kDa antigens were detected in the patient's serum by immunoblot analysis using extracts from normal human epidermis and human epidermal keratinocytes. These two antibodies, eluted from individual nitrocellulose membranes, reacted with the epidermal side of 1 mol L-1 NaCl split skin on indirect immunofluorescence microscopy, and bound to hemidesmosomes as determined by immunoperoxidase electron microscopy. This observation suggests the presence of hitherto uncharacterized 200- and 280-kDa hemidesmosomal proteins distinct from BPAG1, BPAG2 and beta4 integrin as target antigens in linear IgA disease.
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Affiliation(s)
- W Fujimoto
- Department of Dermatology, Okayama University Medical School, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
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24
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Schumann H, Baetge J, Tasanen K, Wojnarowska F, Schäcke H, Zillikens D, Bruckner-Tuderman L. The shed ectodomain of collagen XVII/BP180 is targeted by autoantibodies in different blistering skin diseases. THE AMERICAN JOURNAL OF PATHOLOGY 2000; 156:685-95. [PMID: 10666397 PMCID: PMC1850053 DOI: 10.1016/s0002-9440(10)64772-4] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/14/1999] [Indexed: 10/18/2022]
Abstract
Collagen XVII/BP180, an epidermal adhesion molecule, exists as a full-length transmembrane protein and as a soluble 120-kd ectodomain that is shed from the keratinocyte surface by furin-mediated proteolysis. Despite a number of studies on autoantibody targets in blistering skin diseases, it has remained unclear whether the physiologically shed ectodomain of collagen XVII plays a role as an autoantigen. Here we isolated the authentic, soluble form of human collagen XVII and showed that it is an autoantigen recognized by IgG and IgA autoantibodies in different blistering skin diseases and is, in some cases, the preferential target. The ectodomain was isolated from the epidermis, keratinocyte media, amniotic fluid, and pemphigoid blister fluid, and autoantibodies affinity-purified with this ectodomain bound to the proximal surface of the epidermis in normal skin but not in collagen XVII-deficient skin. The antibody reactivity was not dependent on the native conformation or the N-glycosylation of the soluble ectodomain, but was abolished by collagenase treatment. Sera of 81 patients with a clinically active blistering skin disease were reacted with full-length collagen XVII, the authentic soluble ectodomain, and recombinant fragments. In bullous and cicatricial pemphigoid, IgG reactive with full-length collagen XVII also recognized the soluble ectodomain. In linear IgA dermatosis and chronic bullous dermatosis of childhood, IgA targeted the soluble ectodomain more efficiently than the full-length protein. The use of recombinant fragments demonstrated that epitopes were present in several noncollagenous and collagenous subdomains of the molecule, and that a significant portion of the sera targeted Col15 domain, a hitherto unrecognized epitope region.
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Affiliation(s)
- H Schumann
- Department of Dermatology, University of Münster, Münster, Germany
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25
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Affiliation(s)
- C A Egan
- Medicine Service, Section of Dermatology, Salt Lake City Veterans Affairs Medical Center, Utah, USA
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26
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Wojnarowska F, Allen J, Collier PM, Leigh IM. A comparison of the expression of known basement membrane components with the linear IgA disease antigens using the novel substrate cylindroma. Br J Dermatol 1999; 141:62-70. [PMID: 10417517 DOI: 10.1046/j.1365-2133.1999.02922.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Linear IgA disease (LAD) is characterized by IgA basement membrane zone autoantibodies. Immunofluorescence, immunoblotting and immunoelectron microscopy studies have established the complexity and heterogeneity of the target antigens. We have studied the expression of the LAD antigens by cylindroma, a benign epithelial tumour that secretes abundant basement membrane, using 57 LAD sera categorized by indirect immunofluorescence on intact and salt-split skin. The expression of known components of hemidesmosomes, the anchoring filaments, extracellular matrix and the anchoring fibrils could be differentiated and were compared with the expression of the LAD antigens. The results showed that the LAD sera bound to the cylindroma tumour in two distinctive patterns. Thirty-three sera were positive on cylindroma. Twenty-seven sera bound to the basement membrane around the tumour clusters and the islets within the clusters in a thin linear band that was occasionally discontinuous. This was similar to the pattern observed with antibodies to the hemidesmosome components, the alpha6beta4 integrin and the bullous pemphigoid antigens BP230 and BP180. This pattern was observed with sera that bound to the epidermal (11) and the dermal (3) aspects of split skin or were negative (11), and with one serum which bound only to intact skin. Seven sera, all binding to the dermal aspect of split skin, bound the tumour cluster basement membrane in a thick band that was identical in appearance to that seen with antibodies to collagen VII; however, binding to the islets was either identical to collagen VII or similar but differentiated with double staining. Some sera were negative on cylindroma. Using fluorescence overlay antigen mapping we demonstrated colocalization of some epidermal-associated LAD target antigens with known hemidesmosome proteins, and colocalization of some dermal-associated LAD target antigens with anchoring fibril components. The results using cylindroma as substrate suggest that LAD autoantibodies may react with three or more target antigens. We propose from the results of this study that the autoantibodies in LAD target multiple antigens associated with hemidesmosomes and anchoring fibrils.
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Affiliation(s)
- F Wojnarowska
- Department of Dermatology, Oxford Radcliffe Hospital, Oxford OX3 7LJ, UK
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