Cited by 151Gut microbiota and healthAmyotrophic Lateral Sclerosis ResearchProbiotics and Fermented Foods

A prospective longitudinal study on the microbiota composition in amyotrophic lateral sclerosis

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Di Gioia, Diana, Bozzi Cionci, Nicole, Baffoni, Loredana, Amoruso, Angela, Pane, Marco, Mogna, Luca, Gaggìa, Francesca, Lucenti, Maria Ausiliatrice +4 more·2020·BMC Medicine

Abstract

Background: A connection between amyotrophic lateral sclerosis (ALS) and altered gut microbiota composition has previously been reported in animal models. This work is the first prospective longitudinal study addressing the microbiota composition in ALS patients and the impact of a probiotic supplementation on the gut microbiota and disease progression. Methods: Fifty patients and 50 matched controls were enrolled. The microbial profile of stool samples from patients and controls was analyzed via PCR-Denaturing Gradient Gel Electrophoresis, and the main microbial groups quantified via qPCR. The whole microbiota was then analyzed via next generation sequencing after amplification of the V3–V4 region of 16S rDNA. Patients were then randomized to receive probiotic treatment or placebo and followed up for 6 months with ALSFRS-R, BMI, and FVC%. Results: The results demonstrate that the gut microbiota of ALS patients is characterized by some differences with respect to controls, regardless of the disability degree. Moreover, the gut microbiota composition changes during the course of the disease as demonstrated by the significant decrease in the number of observed operational taxonomic unit during the follow-up. Interestingly, an unbalance between potentially protective microbial groups, such as Bacteroidetes, and other with potential neurotoxic or pro-inflammatory activity, such as Cyanobacteria, has been shown. The 6-month probiotic treatment influenced the gut microbial composition; however, it did not bring the biodiversity of intestinal microbiota of patients closer to that of control subjects and no influence on the progression of the disease measured by ALSFRS-R was demonstrated. Conclusions: Our study poses the bases for larger clinical studies to characterize the microbiota changes as a novel ALS biomarker and to test new microbial strategy to ameliorate the health status of the gut. Trial registration: CE 107/14, approved by the Ethics Committee of the “Maggiore della Carità” University Hospital, Italy.

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Authors
Di Gioia, D., Bozzi Cionci, N., Baffoni, L., Amoruso, A., Pane, M., Mogna, L., Gaggìa, F., Lucenti, M. A., Bersano, E., Cantello, R., De Marchi, F., & Mazzini, L.
Affiliations
  • University of Bologna (IT)
  • Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT)
Corresponding author
Mazzini, Letizia
Venue
BMC Medicine
Published
2020-06-17
Volume
18
Issue
1
Pages
153-153
ISSN
1741-7015 (ISSN-L)
OpenAlex
W3035761210
Cited by
151
References
88
Citations by year
2026: 16 · 2025: 24 · 2024: 34 · 2023: 27 · 2022: 24 · 2021: 21 · 2020: 5
FWCI
6.24
Type
journal article
Language
en
Open access
Locations
  • BMC Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Probiotical S.p.A. (--)
  • Università degli Studi del Piemonte Orientale (AGING Project for Department of Excellence at the Department of Translational Medicine (DIMET), Università del Piemonte Orientale, Novara, Italy)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
amyotrophic lateral sclerosis, gut microbiota, probiotic supplementation, disease progression, Bacteroidetes, cyanobacteria, microbial diversity, ALS biomarkers, 16S rRNA gene sequencing, stool microbiome
MeSH terms
Gastrointestinal Microbiome, Adolescent, Adult, Aged, Amyotrophic Lateral Sclerosis, Animals, Female, Humans, Longitudinal Studies, Male, Middle Aged, Prospective Studies, Young Adult

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