@article {8524, title = {Lack of Evidence of Rotavirus-Dependent Molecular Mimicry as a Trigger of Celiac Disease.}, journal = {Clin Exp Immunol}, year = {2016}, month = {2016 Aug 22}, abstract = {

New data suggest the involvement of Rotavirus (RV) in triggering autoimmunity in celiac disease (CD) by molecular mimicry between the human-transglutaminase protein and the dodecapeptide (260-271 aa) of the RV protein VP7 (pVP7). To assess the role of RV in the onset of CD, we measured the anti-pVP7 antibodies in the sera of children with CD and of control groups. We analysed serum samples of 118 biopsy proven CD patients and 46 patients with potential-CD; 32 children with other gastrointestinal diseases; 107 no-CD children and 107 blood donors. By ELISA assay, we measured IgA-IgG antibodies against the synthetic peptides pVP7, the human transglutaminase-derived peptide (476-487 aa) which shows an homology with VP7 protein and a control peptide. The triple-layered RV particles (TLPs), containing the VP7 protein, and the double-layered RV-particles (DLPs), lacking the VP7 protein were also used as antigens in ELISA assay. Antibody reactivity to the RV-TLPs was positive in 22/118 (18\%) CD patients and in both paediatric (17/107, 16\%) and adult (29/107, 27\%) control groups, without showing a statistically significant difference among them (p=0.6, p=0.1). Biopsy-proven CD patients as well as the adult control group demonstrated a high positive antibody reactivity against both pVP7 (34/118, 29\% CD patients; 66/107, 62\% adult controls) and control synthetic peptides (35/118, 30\% CD patients; 56/107, 52\% adult controls) suggesting a non-specific response against RV pVP7. We show that children with CD do not have higher immune reactivity to RV, thus questioning the molecular mimicry mechanism as a triggering factor of CD. This article is protected by copyright. All rights reserved.

}, issn = {1365-2249}, doi = {10.1111/cei.12855}, author = {Ziberna, Fabiana and De Lorenzo, Giuditta and Schiavon, Valentina and Arnoldi, Francesca and Quaglia, Sara and De Leo, Luigina and Vatta, Serena and Martelossi, Stefano and Burrone, Oscar R and Ventura, Alessandro and Not, Tarcisio} }