Evidence map›Paper›PMID 28703640›Full record

ArticleGut microbes2017

Serum cortisol mediates the relationship between fecal Ruminococcus and brain N-acetylaspartate in the young pig.

Austin T Mudd, Kirsten Berding, Mei Wang, Sharon M Donovan, Ryan N Dilger

Open access · goldAbstract read
In one paragraph

Article in Gut microbes, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% of its field
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

74 citing papers in PubMed, 1 synthesis or guideline pooled it, 134 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  14. Prenatal PMEnvironment & health (Washington, D.C.) · 2024
    Article
  15. Article
  16. Neuromodulation and the Gut-Brain Axis: Therapeutic Mechanisms and Implications for Gastrointestinal and Neurological Disorders.Pathophysiology : the official journal of the International Society for Pathophysiology · 2024
    Review
  17. Review
  18. Article
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14 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

5 authors at 1 institution in 1 country.

Austin T Mudda Piglet Nutrition & Cognition Laboratory , University of Illinois , Urbana , IL , USA.
Kirsten Berdingc Division of Nutritional Sciences , University of Illinois , Urbana , IL , USA.
Mei Wangd Department of Food Science and Human Nutrition , University of Illinois , Urbana , IL , USA.ORCID 0000-0003-0379-6633
Sharon M Donovanc Division of Nutritional Sciences , University of Illinois , Urbana , IL , USA.ORCID 0000-0002-9785-4189
Ryan N Dilgera Piglet Nutrition & Cognition Laboratory , University of Illinois , Urbana , IL , USA.ORCID 0000-0003-2538-2845
University of Illinois Urbana-Champaign · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A dynamic relationship between the gut microbiota and brain is pivotal in neonatal development. Dysbiosis of the microbiome may result in altered neurodevelopment; however, it is unclear which specific members of microbiota are most influential and what factors might mediate the relationship between the gut and the brain. Twenty-four vaginally-derived male piglets were subjected to magnetic resonance spectroscopy at 30 d of age. Ascending colon contents, feces, and blood were collected and analyzed for volatile fatty acids, microbiota relative abundance by 16s rRNA, and serum metabolites, respectively. A mediation analysis was performed to assess the mediatory effect of serum biomarkers on the relationship between microbiota and neurometabolites. Results indicated fecal Ruminococcus and Butyricimonas predicted brain N-acetylaspartate (NAA). Analysis of serum biomarkers indicated Ruminococcus independently predicted serum serotonin and cortisol. A 3-step mediation indicated: i) Ruminococcus negatively predicted NAA, ii) Ruminococcus negatively predicted cortisol, and iii) a significant indirect effect (i.e., the effect of fecal Ruminococcus through cortisol on NAA) was observed and the direct effect became insignificant. Thus, serum cortisol fully mediated the relationship between fecal Ruminococcus and brain NAA. Using magnetic resonance spectroscopy, this study used a statistical mediation analysis and provides a novel perspective into the potential underlying mechanisms through which the microbiota may shape brain development. This is the first study to link Ruminococcus, cortisol, and NAA in vivo, and these findings are substantiated by previous literature indicating these factors may be influential in the etiology of neurodevelopmental disorders.

Indexed as

Gastrointestinal MicrobiomeAnimalsAnimals, NewbornAspartic AcidBrainColon, AscendingDysbiosisFatty Acids, VolatileFecesHydrocortisoneMagnetic Resonance SpectroscopyMaleRuminococcusSwineAspartic AcidFatty Acids, VolatileHydrocortisoneN-acetylaspartateautismmicrobiomeN-acetylaspartateneurodevelopmentpigRuminococcus

Identifiers

PMID28703640
PMCPMC5730385
OpenAlexW2735229722

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.