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In vitro Model of the Pathogenesis of Celiac Disease

Oberhuber G, Schwarzenhofer M, Vogelsang H
Dig Dis 1999 Nov- Dec;16(6):341-4

Department of Clinical Pathology, University of Vienna, Vienna, Austria. The in vitro challenge of duodenal mucosa with gliadin is a useful model to reproduce the immunological features of celiac disease (CD) and allows the study of early pathogenetic events in this disease. With this model it was shown that antigens such as ICAM-1 and HLA-DR are upregulated as early as 1-2 h after gliadin challenge in patients with CD. After 24 h the

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highly vascular layer of connective tissue under the basement membrane lining a layer of a membranous cellular tissue that covers a free surface or lines a tube or cavity of an animal body and serves especially to enclose and protect the other parts of the body, to produce secretions and excretions, and to function in assimilation.'); return false">lamina propria contained CD4+ T cells expressing the IL-2 receptor alpha-chain, which is a sign of activation. Intraepithelial lymphocytes increased in number and showed proliferative activity. After in vitro stimulation with gliadin, endomysial antibodies were found in the supernatant of the cultured mucosa from patients with celiac disease following a gluten-free diet. This supported the notion that endomysial antibodies are at least in part produced locally. The model was also successfully used to identify toxic constituents of gliadin. Presently, organ culture is not commonly used for diagnostic purposes.

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