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  • Title: Systematic review and meta-analysis of the role of Faecalibacterium prausnitzii alteration in inflammatory bowel disease.
    Author: Zhao H, Xu H, Chen S, He J, Zhou Y, Nie Y.
    Journal: J Gastroenterol Hepatol; 2021 Feb; 36(2):320-328. PubMed ID: 32815163.
    Abstract:
    BACKGROUND AND AIM: We comprehensively carry out a systematic review and meta-analysis of previous studies to determine the association between intestinal Faecalibacterium prausnitzii (F. prausnitzii) and inflammatory bowel disease (IBD) in human studies. METHODS: A systematic literature search of PubMed, Embase, and the Cochrane Library database was conducted until April 1, 2020. Inclusion criteria were studies involving patients with Crohn's disease (CD) or ulcerative colitis (UC) with abundance of F. prausnitzii. The quality of the studies was assessed by the modified Newcastle-Ottawa scale. RESULTS: A total of 1669 subjects (427 CD patients, 560 UC patients, and 682 healthy controls) were enrolled from 16 studies. Both CD (standardized mean difference [SMD]: -1.36; 95% CI, -1.74 to -0.98; P < 0.00001) and UC patients (SMD: -0.81; 95% CI, -1.21 to -0.42; P < 0.0001) had a lower abundance of F. prausnitzii than the healthy controls. Compared with the IBD remission patients, the IBD active patients had lower levels of F. prausnitzii (SMD: -0.56; 95% CI, -0.91 to -0.21; P = 0.002). In the subgroup analyses, the abundance of F. prausnitzii was reduced in both active CD patients (SMD: -0.78; 95% CI, -1.51 to -0.04; P = 0.04) and active UC patients (SMD:-0.44; 95%CI, -0.81 to -0.07; P = 0.02) when compared with the patients with CD or UC in remission, respectively. CONCLUSION: A negative association between abundance of F. prausnitzii and IBD activity is observed, but a cut-off level of F. prausnitzii to diagnose and/or to start treating IBD is not determined.
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