Evidence map›Paper›PMID 36814280›Full record

ArticleCritical care (London, England)2023

Gut microbiota composition during hospitalization is associated with 60-day mortality after severe COVID-19.

Marius Trøseid, Jan Cato Holter, Kristian Holm, Beate Vestad, Taisiia Sazonova, Beathe K Granerud, Anne Ma Dyrhol-Riise, Aleksander R Holten, Kristian Tonby, Anders Benjamin Kildal and 8 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04381819 (Norwegian SARS-CoV-2 Study - Virological, Clinical and Immunological Characterisation of Inpatients During the COVID-19 Outbreak), which is not on this map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% 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.

NCT04381819 unknown statusnot on this map

Norwegian SARS-CoV-2 Study - Virological, Clinical and Immunological Characterisation of Inpatients During the COVID-19 Outbreak: A Prospective Cohort Study

TypeobservationalSponsorOslo University HospitalRan2020 to 2023Enrolled1,000ConditionsSARS Virus, Severe Acute Respiratory SyndromeArmsSARS-CoV-2 PCR
3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Mucosal immune response in biology, disease prevention and treatment.Signal transduction and targeted therapy · 2025
    Pooled it
  2. Article
  3. Review
  4. Microbiome-Metabolome Crosstalk as a Driver of COVID-19 Severity.Medical sciences (Basel, Switzerland) · 2026
    Article
  5. Review
  6. Article
  7. Review
  8. Article
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  10. Article
  11. Article
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  16. Claudin-2 upregulation enhances intestinal permeability, immune activation, dysbiosis, and mortality in sepsis.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  17. Review
  18. Article
  19. Article
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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

18 authors at 6 institutions in 1 country.

Marius TrøseidResearch Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway. marius.troseid@medisin.uio.no.
Jan Cato HolterInstitute of Clinical Medicine, University of Oslo, 0315, Oslo, Norway.
Kristian HolmResearch Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway.
Beate VestadResearch Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway.
Taisiia SazonovaResearch Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway.
Beathe K GranerudInstitute of Clinical Medicine, University of Oslo, 0315, Oslo, Norway.
Anne Ma Dyrhol-RiiseInstitute of Clinical Medicine, University of Oslo, 0315, Oslo, Norway.
Aleksander R HoltenInstitute of Clinical Medicine, University of Oslo, 0315, Oslo, Norway.
Kristian TonbyInstitute of Clinical Medicine, University of Oslo, 0315, Oslo, Norway.
Anders Benjamin KildalDepartment of Anesthesiology and Intensive Care, University Hospital of North Norway, 9019, Tromsö, Norway.
Lars HeggelundDepartment of Internal Medicine, Drammen Hospital, Vestre Viken Hospital Trust, 3004, Drammen, Norway.
Anders TveitaSection of Clinical Immunology and Infectious Diseases, Oslo University Hospital, 0424, Oslo, Norway.
Simen BøeDepartment of Anesthesiology and Intensive Care, Hammerfest County Hospital, Hammerfest, Norway.
Karl Erik MüllerDepartment of Internal Medicine, Drammen Hospital, Vestre Viken Hospital Trust, 3004, Drammen, Norway.
Synne JenumDepartment of Infectious Diseases, Oslo University Hospital, 0424, Oslo, Norway.
Johannes R Hov *Research Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway.
Thor Ueland *Research Institute of Internal Medicine, Oslo University Hospital, 0424, Oslo, Norway.
Norwegian SARS-CoV-2 study group
Oslo University Hospital · NOUniversity of Oslo · NODrammen Hospital · NOHammerfest Hospital · NOUniversity Hospital of North Norway · NOVestre Viken Hospital Trust · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGut microbiota alterations have been reported in hospitalized COVID-19 patients, with reduced alpha diversity and altered microbiota composition related to respiratory failure. However, data regarding gut microbiota and mortality are scarce.

methodsRectal swabs for gut microbiota analyses were collected within 48 h after hospital admission (baseline; n = 123) and three-month post-admission (n = 50) in a subset of patients included in the Norwegian SARS-CoV2 cohort study. Samples were analysed by sequencing the 16S rRNA gene. Gut microbiota diversity and composition at baseline were assessed in relation to need for intensive care unit (ICU) admission during hospitalization. The primary objective was to investigate whether the ICU-related gut microbiota was associated with 60-day mortality.

resultsGut microbiota diversity (Shannon index) at baseline was lower in COVID-19 patients requiring ICU admission during hospitalization than in those managed in general wards. A dysbiosis index representing a balance of enriched and reduced taxa in ICU compared with ward patients, including decreased abundance of butyrate-producing microbes and enrichment of a partly oral bacterial flora, was associated with need of ICU admission independent of antibiotic use, dexamethasone use, chronic pulmonary disease, PO

conclusionsAlthough our data should be regarded as exploratory due to low number of clinical end points, they suggest that gut microbiota alterations during hospitalization could be related to poor prognosis after severe COVID-19. Larger studies of gut involvement during COVID-19 in relation to long-term clinical outcome are warranted. Trial registration NCT04381819 . Retrospectively registered May 11, 2020.

Indexed as

COVID-19Gastrointestinal MicrobiomeCohort StudiesDysbiosisHospitalizationHumansRNA, Ribosomal, 16SRNA, ViralSARS-CoV-2RNA, Ribosomal, 16SRNA, Viral

Identifiers

PMID36814280
PMCPMC9946863
OpenAlexW4321482834

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.