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The efficacy of probiotics in experimental autoimmune encephalomyelitis (an animal model for MS): a systematic review and meta‐analysis

S. Valizadeh, Abbas Majdi Seghinsara, Khalil Maleki Chollou, A. Bahadori, S. Abbaszadeh, M. Taghdir, Hamed Behniafar, S. Riahi

Letters in Applied Microbiology, 2021

14 citations

Abstract

Probiotics immunomodulatory properties and their beneficial effects for diseases such as multiple sclerosis (MS) are reported by several studies. The current systematic review and meta‐analysis aimed to investigate the favourable effects of probiotics in improving experimental autoimmune/allergic encephalomyelitis (EAE) as an animal model of MS. We systematically searched Scopus, Web of Sciences (ISI), and PubMed databases to identify relevant studies from the inception of these databases to December 2019. A total of 15 animal studies met the inclusion criteria, while no human study met the inclusion criteria. The association between consumption of probiotics and each sign was calculated using the producing pooled odd ratios (95% confidence interval [95% CI]) in a random effect model. The meta‐analysis revealed the significant effect of probiotics on the incidence of EAE, weight gain, and clinical symptoms. However, the effects of probiotics on the duration of the disease varied by probiotic strain. The administration of probiotics was associated with a significant reduction in the risk of mortality only in female animals. Moreover, the meta‐analysis revealed the promising effects of probiotics on the prevention and management of EAE.

How strong is the evidence?

Evidence Hub reads this as a systematic review, done in animal, not in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.

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