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- W2017101487 abstract "A slight to moderate increase in autoantibodies to transglutaminase 2 (TG2), but no morphological evidence of villous atrophy to confirm the diagnosis of celiac disease (CD) poses a challenge for clinicians. Our aim was to study the matrix metalloproteinase (MMP) profile, proliferative and apoptotic characteristics of jejunal biopsies obtained from such pediatric patients in order to find markers predictive of early changes in extracellular matrix degrading enzymes in the development of CD.Twenty-eight children with positive screening tests (increase in transglutaminase and/or endomysium antibodies), but minor histological changes in the gut (Marsh grade 0-2), were studied and followed up for 2-3 years. In situ hybridizations for MMP-1, -3 and -12 were performed and sections were immunostained for MMP-19 and -26. Proliferating cells were identified by Ki-67 immunostaining and apoptotic cells using the TUNEL technique.MMP-12 was detected in macrophages in 16/28 samples and its expression was associated with increased autoantibodies for TG2 and densities of CD3 and gammadelta positive T-cells in the epithelium. The number of stromal MMP-26 positive cells was high in patients with high TG2 titers. Expression of MMP-12, MMP-1 and -3 clustered in children with type 1 diabetes (T1D) and the proportion of apoptotic mucosal cells was increased in patients with T1D compared to the others. When children with CD were compared to those who did not develop it, the numbers of IEL, cryptal Ki-67, CD-3, and MMP-12 positive cells were higher and showed the most significant differences.In pediatric patients, increased numbers of MMP-12 positive macrophages in lamina propria associate with high titers of antibodies to TG2 and proness to CD. A stage of mild inflammation may contribute to the upregulation of MMPs in the gut of patients with T1D." @default.
- W2017101487 created "2016-06-24" @default.
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- W2017101487 date "2005-01-01" @default.
- W2017101487 modified "2023-10-18" @default.
- W2017101487 title "Metalloelastase (MMP-12) is upregulated in the gut of pediatric patients with potential celiac disease and in type 1 diabetes" @default.
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- W2017101487 doi "https://doi.org/10.1080/00365520510023918" @default.
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