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The bullae are formed by an immune reaction, initiated by the formation of IgG [citation needed] autoantibodies targeting dystonin, also called bullous pemphigoid antigen 1, [6] and/or type XVII collagen, also called bullous pemphigoid antigen 2, [7] which is a component of hemidesmosomes. A different form of dystonin is associated with ...
Gestational pemphigoid: IgG1: NC16A terminal of BPAG2 BPAG1: 180 230 Cicatricial pemphigoid: C-terminal of BPAG2: 180 Ocular cicatricial pemphigoid: Integrin beta-4 subunit: 200 Antiepiligrin cicatricial pemphigoid [nb 1] Laminin 5 (Epiligrin, Laminin 332) Linear IgA bullous dermatosis: LAD1 portion of BPAG2 Collagen type VII: 97 290/145 ...
Antibody isotype(s) and location of antibody deposition in immunofluorescence studies using salt-split skin for autoimmune bullous conditions targeting the basement membrane zone of the human integumentary system Condition Antibody isotype(s) deposited Localization of antibody with use of salt-split skin Antiepilegrin cicatricial pemphigoid ...
Pemphigoid is a group of rare autoimmune blistering diseases of the skin and mucous membranes.As its name indicates, pemphigoid is similar in general appearance to pemphigus, [1] however unlike pemphigus, pemphigoid does not feature acantholysis, a loss of connections between skin cells.
The number of target antigens varies on a case by case basis. The variability is likely what accounts for the different presentations of PNP. Through immunoprecipitation, target antigens have been found to include desmoglein-3, desmoglein-1, envoplakin, periplakin, desmoplakin 1, desmoplakin 2, and bullous pemphigoid antigen I. [citation needed]
Bullous pemphigoid. Bullous pemphigoid is an autoimmune bullous disease that mainly affects older individuals. Individuals typically present with itchy rashes that transform into fluid filled bullous lesions on the skin. Although these blisters usually appear on the arms, legs, and trunk of the body, they can also be found in the mouth as sores.
In some cases, these blisters can cover a large area of the skin. [3] Originally, the cause of this disease was unknown, and "pemphigus" was used to refer to any blistering disease of the skin and mucosa. In 1964, researchers found that the blood of patients with pemphigus contained antibodies to the layers of skin that separate to form the ...
[6] [7] It is useful in differentiating between the diagnosis of pemphigus vulgaris or mucous membrane pemphigoid (where the sign is present) and bullous pemphigoid (where it is absent). The Nikolsky sign is dislodgement of intact superficial epidermis by a shearing force, indicating a plane of cleavage in the skin epidermal-epidermal junctions ...