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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 284 (1992), S. 141-145 
    ISSN: 1432-069X
    Keywords: Bullous pemphigoid ; Interleukin-2 receptor ; Soluble interleukin-2 receptor ; Immunohistology ; Cell-mediated immunity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The interleukin-2 receptor (IL-2R) is mainly expressed on activated T cells. Depending on its rate of synthesis, a portion is released from the cell surface as soluble IL-2R (sIL-2R). Since the role of mononuclear cells in the pathology of bullous pemphigoid (BP) is not well understood, we determined the sIL-2R in both blister fluid and serum of 15 BP patients with generalized disease before initiating systemic treatment. In addition, we obtained both lesional and perilesional skin biopsies and examined the mononuclear infiltrate with a panel of monoclonal antibodies. In BP blisters, sIL-2R levels were significantly increased (2070±350 U/ml), (±SEM) compared with serum samples taken at the time of blister puncture (1340±290 U/ml). In six patients with blisters due to second-degree burns or friction and in five suction blister volunteers, sIL-2R levels were normal in both blisters and serum. In BP, elevated serum levels decreased to normal during therapy, correlating with disease activity. The immunohistology showed that 30% of mononuclear cells in the dermal infiltrate of lesional skin expressed the IL-2R, whereas only 15% were positive in perilesional skin. IL-2R-positive cells are the most likely source of the shed receptor in BP blisters. Our results indicate the presence of activated T cells in lesions and peripheral blood of BP and thus underline the importance of cell-mediated immune mechanisms in the pathology of this disease.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Lineare IgA-Dermatose ; Bullöses Pemphigoid ; Basalmembran ; Bullöse Autoimmundermatosen ; Autoantikörper ; Keywords Linear IgA disease ; Bullous pemphigoid ; Basement membrane ; Autoimmune blistering diseases ; Autoantibodies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract A 29-year-old female patient with an autoimmune subepidermal blistering disease had linear deposits of both IgA and IgG at the basement membrane zone. Clinically, the patient presented with tense blisters on the face, trunk, extremities and oral mucosa. Histologically, we found a subepidermal blister formation and a predominantly neutrophilic infiltrate. Direct immunofluorescence showed linear deposits of IgA along the basement membrane zone, as well as linear deposits of IgG and C3 as typically found in bullous pemphigoid. Indirect immunofluorescence demonstrated circulating IgA and IgG autoantibodies. This case extends previous reports on a subgroup of patients with subepidermal blistering diseases characterized by the presence of both IgA and IgG anti-basement membrane antibodies. These patients reveal clinical, histological and immunopathological features of linear IgA disease and bullous pemphigoid.
    Notes: Zusammenfassung Wir berichten über eine 29jährige Patientin mit einer subepidermal blasenbildenden Autoimmundermatose, die durch lineare Ablagerungen von IgA- und IgG-Antikörpern an der dermoepidermalen Junktionszone gekennzeichnet ist. Klinisch fanden sich pralle Bläschen im Gesicht, am Stamm, an den Extremitäten und an der Mundschleimhaut. Histologisch sahen wir eine subepidermale Blasenbildung und ein neutrophilenreiches Entzündungsinfiltrat. Mittels direkter Immunfluoreszenz fanden sich in der Haut der Patientin lineare IgA-Ablagerungen an der Basalmembranzone. Ungewöhnlich war jedoch der gleichzeitige Nachweis von linearen IgG- und C3-Ablagerungen, die typischerweise beim bullösen Pemphigoid vorkommen. Auch im Serum der Patientin fanden sich Autoantikörper sowohl der IgA- als auch der IgG-Klasse. Der Fall dieser Patientin bestätigt frühere Berichte, daß es bei den subepidermal blasenbildenden Autoimmundermatosen eine Untergruppe von Patienten mit gleichzeitigem Nachweis von IgA- und IgG-Antikörpern gibt, bei denen sich klinische, histologische und immunpathologische Merkmale von linearer IgA-Dermatose und bullösem Pemphigoid überlappen.
    Type of Medium: Electronic Resource
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