Gut Dysbiosis Is Related With Activity And Remission Phases Of Ulcerative Colitis And Healthy Condition



Background. Ulcerative Colitis (UC) is a frequent type of Inflammatory Bowel Disease, characterized by periods of remission and exacerbation. Gut dysbiosis may influence pathophysiology and clinical response in UC. The purpose of this study was to evaluate whether gut microbiota is related to the active and remission phases of UC compared to healthy subjects. Results. Cross-sectional study. Fecal samples from 18 patients with UC (clinically characterized as active (n=9), remission (n=9)) and 15 healthy subjects were collected. After fecal DNA extraction, the 16S rRNA gene was amplified and sequenced (Illumina MiSeq platform), operational taxonomic units were analyzed with the QIIME (Quantitative Insights Into Microbial Ecology) software. Alpha and beta diversities were compared between clinical settings, as well as the relation between most frequent genus with UC severity indicators. Gut microbiota composition revealed higher abundance of the phyla Proteobacteria and Fusobacteria in active UC, as compared with remission UC and healthy subjects. Likewise, marked abundance of the genus Bilophila and Fusobacteria were present in active UC, as compared with the other groups, whereas higher abundance of Faecalibacterium characterize...Continue Reading

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