TY - GEN A1 - Sowa, Mandy A1 - Murugaiyan, Jayaseelan A1 - Conrad, Karsten A1 - Laass, Martin W. A1 - Bogdanos, Dimitrios Petrou A1 - Papp, Maria A1 - Rödiger, Stefan A1 - Roggenbuck, Dirk A1 - Schierack, Peter T1 - A novel neutrophil autoantigenic target in inflammatory bowel disease Y1 - 2018 UR - https://www.researchgate.net/publication/335889899_A_novel_neutrophil_autoantigenic_target_in_inflammatory_bowel_disease ER - TY - GEN A1 - Murugaiyan, Jayaseelan A1 - Krüger, Karolin A1 - Rösler, Uwe A1 - Weinreich, Jörg A1 - Schierack, Peter T1 - Assessment of species and antimicrobial resistance among Enterobacteriaceae isolated from mallard duck faeces T2 - Environmental Monitoring and Assessment Y1 - 2015 U6 - https://doi.org/10.1007/s10661-015-4346-4 SN - 0167-6369 SN - 1573-2959 VL - 187 IS - 3 SP - 127 EP - 137 ER - TY - GEN A1 - Deutschmann, Claudia A1 - Sowa, Mandy A1 - Murugaiyan, Jayaseelan A1 - Roessler, Uwe A1 - Röber, Nadja A1 - Conrad, Karsten A1 - Laass, Martin W. A1 - Bogdanos, Dimitrios Petrou A1 - Sipeki, Nora A1 - Papp, Maria A1 - Rödiger, Stefan A1 - Roggenbuck, Dirk A1 - Schierack, Peter T1 - Identification of Chitinase-3-Like Protein 1 as a Novel Neutrophil Antigenic Target in Crohn’s Disease T2 - Journal of Crohn's and Colitis N2 - Background and Aims There is an increasing incidence of inflammatory bowel disease [IBD]. Autoimmune responses are involved in the pathophysiology of IBD, but their underlying pathways and target antigens have not yet been fully elucidated. Methods Autoantigenic targets in IBD were identified after separation of whole cell proteins isolated from neutrophils using two-dimensional electrophoresis and matrix assisted laser desorption ionization – time of flight mass spectrometry-based protein identification of the spots that displayed Western blotting signals with anti-neutrophil cytoplasmic antibody-positive sera. The prevalence of IgG, IgA and secretory IgA [sIgA] to chitinase 3-like protein 1 [CHI3L1] was analysed by enzyme-linked immunosorbent assays using recombinant CHI3L1 in 110 patients with Crohn’s disease [CD], 95 with ulcerative colitis [UC], 126 with coeliac disease [CeD] and 86 healthy controls [HCs]. Results The 18-glycosylhydrolase family member CHI3L1 was identified as a neutrophil autoantigenic target. CD patients displayed significantly higher levels of IgG to CHI3L1 than patients with UC and CeD (p < 0.0001, respectively). IgA and sIgA to CHI3L1 was significantly higher in CD than in UC, CeD and HCs [p < 0.0001, respectively]. IgA and sIgA to CHI3L1 demonstrated the highest prevalence in CD [25.5%, 28/110; and 41.8%%, 46/110] compared to HCs [2.3%, 2/86; and 4.7%%, 4/86; p = 0.0015 and p < 0.0001] and are associated with a more complicated progression of CD. Conclusion CHI3L1 is a novel neutrophil autoantigenic target in CD. IgA and sIgA to CHI3L1 may serve as novel markers for CD and may facilitate the serological diagnosis of IBD. Y1 - 2019 U6 - https://doi.org/10.1093/ecco-jcc/jjz012 SN - 1876-4479 SN - 1873-9946 VL - 13 IS - 7 SP - 894 EP - 904 ER -