Evidence map›Paper›PMID 33956889›Full record

ArticlePloS one2021

Assessment of the gut bacterial microbiome and metabolome of girls and women with Rett Syndrome.

Santosh Thapa, Alamelu Venkatachalam, Nabeel Khan, Mohammed Naqvi, Miriam Balderas, Jessica K Runge, Anthony Haag, Kathleen M Hoch, Daniel G Glaze, Ruth Ann Luna and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 7% 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.

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  12. Literature Cases Summarized Based on Their Polysomnographic Findings in Rett Syndrome.International journal of environmental research and public health · 2022
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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

11 authors at 2 institutions in 1 country.

Santosh ThapaDepartment of Pathology, Medical Metagenomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.ORCID 0000-0002-4534-1349
Alamelu VenkatachalamDepartment of Pathology, Medical Metagenomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.ORCID 0000-0002-7623-5426
Nabeel KhanDepartment of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America.
Mohammed NaqviDepartment of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America.
Miriam BalderasDepartment of Pathology, Medical Metagenomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.
Jessica K RungeDepartment of Pathology, Medical Metagenomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.
Anthony HaagDepartment of Pathology, Metabolomics and Proteomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.
Kathleen M HochDepartment of Pathology, Metabolomics and Proteomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.ORCID 0000-0002-7867-1221
Daniel G GlazeDepartment of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America.
Ruth Ann LunaDepartment of Pathology, Medical Metagenomics Laboratory, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, United States of America.
Kathleen J MotilDepartment of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America.ORCID 0000-0002-5713-8399
Baylor College of Medicine · USTexas Children's Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGastrointestinal problems affect the health and quality of life of individuals with Rett syndrome (RTT) and pose a medical hardship for their caregivers. We hypothesized that the variability in the RTT phenotype contributes to the dysbiosis of the gut microbiome and metabolome in RTT, predisposing these individuals to gastrointestinal dysfunction.

objectivesWe characterized the gut bacterial microbiome and metabolome in girls and young women with RTT (n = 44) and unaffected controls (n = 21), and examined the relation between the composition of the microbiome and variations in the RTT phenotype.

methodsDemographics and clinical information, including growth and anthropometric measurements, pubertal status, symptoms, clinical severity score, bowel movement, medication use, and dietary intakes were collected from the participants. Fecal samples were collected for analysis of the gut microbiome using Illumina MiSeq-based next-generation sequencing of the 16S rRNA gene followed by bioinformatics analysis of microbial composition, diversity, and community structure. Selected end-products of microbial protein metabolism were characterized by liquid chromatography-mass spectrometry.

resultsThe gut bacterial microbiome differed within the RTT cohort based on pubertal status (p<0.02) and clinical severity scores (p<0.02) of the individuals and the type of diet (p<0.01) consumed. Although the composition of the gut microbiome did not differ between RTT and unaffected individuals, concentrations of protein end-products of the gut bacterial metabolome, including γ-aminobutyric acid (GABA) (p<0.001), tyrosine (p<0.02), and glutamate (p<0.06), were lower in the RTT cohort. Differences in the microbiome within RTT groups, based on symptomatic anxiety, hyperventilation, abdominal distention, or changes in stool frequency and consistency, were not detected.

conclusionsAlthough variability in the RTT phenotype contributes to the dysbiosis of the gut microbiome, we presently cannot infer causality between gut bacterial dysbiosis and gastrointestinal dysfunction. Nevertheless, alterations in the gut metabolome may provide clues to the pathophysiology of gastrointestinal problems in RTT.

Indexed as

Gastrointestinal MicrobiomeMetabolomeAdolescentAdultChildChild, PreschoolFecesFemaleGas Chromatography-Mass SpectrometryGastrointestinal DiseasesHumansPhenotypeRett SyndromeRNA, Ribosomal, 16SSequence Analysis, DNASeverity of Illness IndexRNA, Ribosomal, 16S

Identifiers

PMID33956889
PMCPMC8101921
OpenAlexW3158872560

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.