J Neurol Sci. 2016 Apr 15;363:153-7. doi: 10.1016/j.jns.2016.02.042. Epub 2016 Feb 20.
Gut microbiota composition and relapse risk in pediatric MS: A pilot study.
Tremlett H, Fadrosh DW, Faruqi AA, Hart J, Roalstad S, Graves J, Lynch S, Waubant E; US Network of Pediatric MS Centers.
We explored the association between baseline gut microbiota (16S rRNA biomarker sequencing of stool samples) in 17 relapsing-remitting pediatric MS cases and risk of relapse over a mean 19.8months follow-up. From the Kaplan-Meier curve, 25% relapsed within an estimated 166days from baseline. A shorter time to relapse was associated with Fusobacteria depletion (p=0.001 log-rank test), expansion of the Firmicutes (p=0.003), and presence of the Archaea Euryarchaeota (p=0.037). After covariate adjustments for age and immunomodulatory drug exposure, only absence (vs. presence) of Fusobacteria was associated with relapse risk (hazard ratio=3.2 (95% CI: 1.2-9.0), p=0.024). Further investigation is warranted. Findings could offer new targets to alter the MS disease course.
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