Journal
MICROBIAL BIOTECHNOLOGY
Volume 13, Issue 6, Pages 2032-2043Publisher
WILEY
DOI: 10.1111/1751-7915.13661
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Funding
- National Natural Science Foundation of China [31720103911]
- Inner Mongolia Science & Technology Major Projects [ZDZX2018018]
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This was a pilot study aiming to evaluate the effects of probiotics as adjunctive treatment for ulcerative colitis (UC). Twenty-five active patients with UC were assigned to the probiotic (n = 12) and placebo (n = 13) groups. The probiotic group received mesalazine (60 mg kg(-1) day(-1)) and oral probiotics (containingLactobacillus caseiZhang,Lactobacillus plantarumP-8 andBifidobacterium animalissubsp. lactisV9) twice daily for 12 weeks, while the placebo group received the same amounts of mesalazine and placebo. The clinical outcomes were assessed. The gut mucosal microbiota was profiled by PacBio single-molecule, real-time (SMRT) sequencing of the full-length 16S rRNA of biopsy samples obtained by colonoscopy. A significantly greater magnitude of reduction was observed in the UC disease activity index (UCDAI) in the probiotic group compared with the placebo group (P = 0.043), accompanying by a higher remission rate (91.67% for probiotic-receivers versus 69.23% for placebo-receivers,P = 0.034). The probiotics could protect from diminishing of the microbiota diversity and richness. Moreover, the gut mucosal microbiota of the probiotic-receivers had significantly more beneficial bacteria likeEubacterium ramulus(P < 0.05),Pediococcus pentosaceus(P < 0.05),Bacteroides fragilis(P = 0.02) andWeissella cibaria(P = 0.04). Additionally, the relative abundances of the beneficial bacteria correlated significantly but negatively with the UCDAI score, suggesting that the probiotics might alleviate UC symptoms by modulating the gut mucosal microbiota. Our research has provided new insights into the mechanism of symptom alleviation in UC by applying probiotic-based adjunctive treatment.
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