Evidence map›Paper›PMID 33833660›Full record

ReviewFrontiers in neuroscience2021

The Contribution of Gut Microbiota-Brain Axis in the Development of Brain Disorders.

Jessica Maiuolo, Micaela Gliozzi, Vincenzo Musolino, Cristina Carresi, Federica Scarano, Saverio Nucera, Miriam Scicchitano, Francesca Oppedisano, Francesca Bosco, Stefano Ruga and 5 more

Abstract readReview
In one paragraph

Review in Frontiers in neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

72 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  10. Assessment of the beneficial effects ofFrontiers in neuroscience · 2026
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  16. Assessing the causal association between celiac disease and autism spectrum disorder: A two-sample Mendelian randomization approach.Autism research : official journal of the International Society for Autism Research · 2025
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12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Jessica MaiuoloIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Micaela GliozziIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Vincenzo MusolinoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Cristina CarresiIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Federica ScaranoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Saverio NuceraIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Miriam ScicchitanoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Francesca OppedisanoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Francesca BoscoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Stefano RugaIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Maria Caterina ZitoIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Roberta MacriIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Ernesto PalmaIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Carolina MuscoliIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
Vincenzo MollaceIRC-FSH Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Different bacterial families colonize most mucosal tissues in the human organism such as the skin, mouth, vagina, respiratory, and gastrointestinal districts. In particular, the mammalian intestine hosts a microbial community of between 1,000 and 1,500 bacterial species, collectively called "microbiota." Co-metabolism between the microbiota and the host system is generated and the symbiotic relationship is mutually beneficial. The balance that is achieved between the microbiota and the host organism is fundamental to the organization of the immune system. Scientific studies have highlighted a direct correlation between the intestinal microbiota and the brain, establishing the existence of the gut microbiota-brain axis. Based on this theory, the microbiota acts on the development, physiology, and cognitive functions of the brain, although the mechanisms involved have not yet been fully interpreted. Similarly, a close relationship between alteration of the intestinal microbiota and the onset of several neurological pathologies has been highlighted. This review aims to point out current knowledge as can be found in literature regarding the connection between intestinal dysbiosis and the onset of particular neurological pathologies such as anxiety and depression, autism spectrum disorder, and multiple sclerosis. These disorders have always been considered to be a consequence of neuronal alteration, but in this review, we hypothesize that these alterations may be non-neuronal in origin, and consider the idea that the composition of the microbiota could be directly involved. In this direction, the following two key points will be highlighted: (1) the direct cross-talk that comes about between neurons and gut microbiota, and (2) the degree of impact of the microbiota on the brain. Could we consider the microbiota a valuable target for reducing or modulating the incidence of certain neurological diseases?

Indexed as

anxiety and depressionautistic spectrum disordersenteric nervous systemgut microbiotagut microbiota-brain axismultiple sclerosisneurological disorders

Identifiers

PMID33833660
PMCPMC8021727

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.