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( Wei Lu ),( Kok Ann Gwee ),( Kewin Tien Ho Siah ),( Jin Yong Kang ),( Ru Min Lee ),( Cecilia Cheng Lai Ngan ) 대한소화기기능성질환·운동학회 2014 Journal of Neurogastroenterology and Motility (JNM Vol.20 No.2
Background/AimsNon-celiac gluten sensitivity has been increasingly recognized as a predisposing factor for irritable bowel syndrome (IBS)-likesymptoms in Western populations where celiac disease (CD) is relatively common. In Asia where CD is rare, we wish to determinethe prevalence of gluten protein associated serology in IBS patients, which has not been formally studied, and its relationto histological and human leukocyte antigen (HLA) markers. MethodsWe reviewed a consecutive cohort of Asian patients with IBS, who had undergone serologic testing for IgA against deamidatedgliadin peptide antibodies (IgA DGP) and IgA anti-endomysium antibodies, and who also had duodenal biopsies during clinicalworkup. In addition, a subset of Chinese patients with positive serology was further tested for HLA-DQ2 and HLA-DQ8. ResultsOf 186 patients, 34 (18%) were positive for IgA DGP; bloating, abdominal pain, belching and diarrhea were the most com -monly reported symptoms but diarrhea as the most bothersome symptom was significantly more common in IgA DGP positivepatients. Mildly increased intra-epithelial lymphocytes on duodenal biopsy was also more common (29% vs. 9%, P = 0.001). Nine of 21 Chinese patients tested as IgA DGP positive undertook HLA-DQ2/DQ8 testing, with only 2 being positive forHLA-DQ8. All patients with positive IgA DGP reported symptom improvement with gluten withdrawal. ConclusionsWe have described a series of Asian, mainly Chinese, patients with IBS who were tested positive for IgA DGP, and improvedon a gluten exclusion diet. We believe this is the first report of non-celiac gluten sensitivity in Asia, a region where CD isuncommon