T-cell receptor 1 (gamma/delta) expression was studied in 19 jejunal or duodenal specimens from patients with dermatitis herpetiformis and in 16 jejunal or duodenal specimens showing normal histology. In normal specimens, gamma/delta+ cells represented 10.8% of intraepithelial CD3+ lymphocytes. Around 50% of these cells were recognized by the A13 monoclonal antibody, which detects products of the V gamma 1/V delta 1 gene rearrangement and the non-disulfide-linked form of T-cell receptor 1. The remaining 50% reacted with the BB3 monoclonal antibody, which recognizes products of the V gamma 9/V delta 2 rearrangement and the disulfide-linked form of receptor. Very few gamma/delta+ cells were observed in the lamina propria. In jejunal specimens from patients with dermatitis herpetiformis, a significant increase in the prevalence of gamma/delta+ intraepithelial lymphocytes was observed (P less than 0.001). This finding was largely accounted for by an increase in those cells recognized by the A13 monoclonal antibody, thus possibly expressing the V gamma 1/V delta 1 rearrangement and the nondisulfide-linked form of receptor. These data suggest that similar pathogenetic mechanisms may be active in determining the jejunal damage in celiac disease and dermatitis herpetiformis.
Increased jejunal intraepithelial lymphocytes bearing gamma/delta T-cell receptor in dermatitis herpetiformis / M. Vecchi, L. Crosti, E. Berti, D. Agape, A. Cerri, R. De Franchis. - In: GASTROENTEROLOGY. - ISSN 0016-5085. - 102:5(1992 May), pp. 1499-1505.
|Titolo:||Increased jejunal intraepithelial lymphocytes bearing gamma/delta T-cell receptor in dermatitis herpetiformis|
VECCHI, MAURIZIO (Primo)
CERRI, AMILCARE (Penultimo)
DE FRANCHIS, ROBERTO (Ultimo)
|Parole Chiave:||Antigens, Differentiation, T-Lymphocyte; Animals; Gene Rearrangement, delta-Chain T-Cell Antigen Receptor; Antigens, CD8; Antigens, CD3; Jejunum; Humans; Receptors, Antigen, T-Cell, gamma-delta; Receptors, Antigen, T-Cell; Mice; Dermatitis Herpetiformis; T-Lymphocytes|
|Settore Scientifico Disciplinare:||Settore MED/35 - Malattie Cutanee e Veneree|
Settore MED/12 - Gastroenterologia
|Data di pubblicazione:||mag-1992|
|Appare nelle tipologie:||01 - Articolo su periodico|