AUTHOR=Bodkhe Rahul , Shetty Sudarshan A. , Dhotre Dhiraj P. , Verma Anil K. , Bhatia Khushbo , Mishra Asha , Kaur Gurvinder , Pande Pranav , Bangarusamy Dhinoth K. , Santosh Beena P. , Perumal Rajadurai C. , Ahuja Vineet , Shouche Yogesh S. , Makharia Govind K. TITLE=Comparison of Small Gut and Whole Gut Microbiota of First-Degree Relatives With Adult Celiac Disease Patients and Controls JOURNAL=Frontiers in Microbiology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2019.00164 DOI=10.3389/fmicb.2019.00164 ISSN=1664-302X ABSTRACT=
Recent studies on celiac disease (CeD) have reported alterations in the gut microbiome. Whether this alteration in the microbial community is the cause or effect of the disease is not well understood, especially in adult onset of disease. The first-degree relatives (FDRs) of CeD patients may provide an opportunity to study gut microbiome in pre-disease state as FDRs are genetically susceptible to CeD. By using 16S rRNA gene sequencing, we observed that ecosystem level diversity measures were not significantly different between the disease condition (CeD), pre-disease (FDR) and control subjects. However, differences were observed at the level of amplicon sequence variant (ASV), suggesting alterations in specific ASVs between pre-disease and diseased condition. Duodenal biopsies showed higher differences in ASVs compared to fecal samples indicating larger disruption of the microbiota at the disease site. The duodenal microbiota of FDR was characterized by significant abundance of ASVs belonging to