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Bizikova P, Olivry T, Linder K, Rybnicek J. Spontaneous autoimmune subepidermal blistering diseases in animals: a comprehensive review. BMC Vet Res 2023; 19:55. [PMID: 36849885 PMCID: PMC9969658 DOI: 10.1186/s12917-023-03597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 01/30/2023] [Indexed: 03/01/2023] Open
Abstract
Autoimmune subepidermal blistering diseases (AISBDs) are rare skin disorders of animals that were first identified in dogs but several AISBDs are now recognised in other companion animal species. Most AISBDs in animals are homologues of the human diseases and are thought to share similar pathomechanisms of epidermal and/or mucosal blister formation caused by autoantibodies targeting structural proteins of the basement membrane zone (BMZ). Disruption of their structural function by the autoantibodies and/or recruited inflammation leads to BMZ fragility, which presents clinically as vesicles, bullae and, later, deep erosions and ulcers. Canine AISBDs are the best characterised, particularly the more common variants such as mucous membrane pemphigoid (48%), epidermolysis bullosa acquisita (EBA) (26%), and bullous pemphigoid (10%). Exceedingly rare AISBDs in the dog are junctional EBA, mixed AISBD, type-1 bullous systemic lupus erythematosus, linear IgA dermatosis, and pemphigus gestationis. The diagnosis of a specific AISBD is made by combining the clinical features (breed, age, lesion distribution) with histological evidence of subepithelial clefting, but not all AISBDs can be differentiated in this manner and specialised immunological testing is required. This latter, unfortunately, is not readily available and, therefore, the specific AISBD diagnosis often remains unconfirmed. While this limits further understanding of these diseases, it does not prevent clinicians from treating their patients, as the treatment approaches are similar for the different AISBDs in dogs. This review primarily focuses on canine AISBDs, the species for which these diseases have been best characterised, and shorter descriptions of variants in other species are also provided.
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Affiliation(s)
- Petra Bizikova
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, 27607, USA.
| | - Thierry Olivry
- grid.40803.3f0000 0001 2173 6074Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC 27607 USA
| | - Keith Linder
- grid.40803.3f0000 0001 2173 6074Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC USA
| | - Jan Rybnicek
- Veterinary Dermatology and Dermatopathology Service, Padochov 175, 66491 Ivancice, Czech Republic
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Tekin B, Johnson EF, Wieland CN, Gibson LE, Camilleri MJ, Kalaaji AN, Comfere NI, Peters MS, Lehman JS. Histopathology of autoimmune bullous dermatoses: What's new? Hum Pathol 2022; 128:69-89. [PMID: 35764145 DOI: 10.1016/j.humpath.2022.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 11/25/2022]
Abstract
Autoimmune bullous dermatoses are characterized by the presence of tissue-bound and often circulating pathogenic autoantibodies targeting structural components of the skin and/or mucous membranes. The diagnostic workup for this heterogeneous group of disorders consists of a multi-step process, of which the light microscopic examination is a crucial component. This review is organized following a classification scheme that is based on two main histopathologic features, namely level of intraepithelial split and composition of the inflammatory infiltrate. Overall, we aim to place emphasis on the histopathologic clues that can assist pathologists in differential diagnosis and review the updates in the literature.
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Affiliation(s)
- Burak Tekin
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Emma F Johnson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Carilyn N Wieland
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Lawrence E Gibson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Michael J Camilleri
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Amer N Kalaaji
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Nneka I Comfere
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Margot S Peters
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA
| | - Julia S Lehman
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Dermatology, Mayo Clinic, Rochester, MN, USA.
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