Evidence map›Paper›PMID 32252662›Full record

ArticleBMC nephrology2020

The urinary microbiome shows different bacterial genera in renal transplant recipients and non-transplant patients at time of acute kidney injury - a pilot study.

Daniela Gerges-Knafl, Peter Pichler, Alexander Zimprich, Christoph Hotzy, Wolfgang Barousch, Rita M Lang, Elisabeth Lobmeyr, Sabina Baumgartner-Parzer, Ludwig Wagner, Wolfgang Winnicki

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in BMC nephrology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Review
  3. Pathological Alterations in Human Blood Microbiome-An Updated Review.International journal of molecular sciences · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Urine microbiome in individuals with an impaired immune system.Frontiers in cellular and infection microbiology · 2023
    Review
  10. Article
  11. Urobiome: An outlook on the metagenome of urological diseases.Investigative and clinical urology · 2021
    Review
  12. Review
  13. Review
  14. Review
  15. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 1 institution in 1 country.

Daniela Gerges-KnaflDepartment of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. daniela.knafl@meduniwien.ac.at.
Peter PichlerDepartment of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Alexander ZimprichDepartment of Neurology, Medical University of Vienna, Vienna, Austria.
Christoph HotzyDepartment of Neurology, Medical University of Vienna, Vienna, Austria.
Wolfgang BarouschDepartment of Laboratory Medicine, Division of Clinical Microbiology, Medical University of Vienna, Vienna, Austria.
Rita M LangDepartment of Internal Medicine III, Division of Endocrinology and Metabolism, Medical University of Vienna, Vienna, Austria.
Elisabeth LobmeyrDepartment of Emergency Medicine, Medical University of Vienna, Vienna, Austria.
Sabina Baumgartner-ParzerDepartment of Internal Medicine III, Division of Endocrinology and Metabolism, Medical University of Vienna, Vienna, Austria.
Ludwig WagnerDepartment of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Wolfgang WinnickiDepartment of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
Medical University of Vienna · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the past urine was considered sterile. Through the introduction of next generation sequencing, it has become clear that a urinary microbiome exists. Acute kidney injury (AKI) represents a major threat to kidney transplant recipients. Remarkable changes in the urinary metabolome occur during AKI, which may influence the urinary microbiome. To our knowledge, this is the first study that examines the urinary microbiome in renal transplant recipients (RTX) and non-transplant recipients (nRTX) at time of AKI.

methodsIn this cross-sectional pilot-study the urinary microbiome of 21 RTX and 9 nRTX with AKI was examined. Clean catch morning urine samples were obtained from all patients on the first day of AKI diagnosis. AKI was defined according to KDIGO guidelines. Urinary microbiota and the urinary metabolome during AKI were assessed in one patient. 16S rRNA sequencing was performed. Sequences were processed using UPARSE-pipeline for operational taxonomic units (OTU) and taxon finding.

resultsWe successfully extracted and sequenced bacterial DNA from 100% of the urine samples. All 30 patients revealed at least 106,138 reads. 319 OTU and 211 different genera were identified. The microbiotic diversity richness in the RTX group was no different from the nRTX group. Eighteen genera were solely present in nRTX and 7 in RTX.

conclusionsThe urinary microbiome at time of AKI showed different bacterial genera in RTX compared to nRTX. The nRTX group exhibited no different diversity to the RTX group. Irrespective of the status of a previous renal transplantation, the urinary microbiome comprised > 210 different genera. An intraindividual change in microbiota diversity and richness was observed in one study patient during recovery from AKI.

Indexed as

Acute Kidney InjuryDNA, BacterialRNA, Ribosomal, 16SUrinary Tract InfectionsCross-Sectional StudiesFemaleHigh-Throughput Nucleotide SequencingHumansKidney Failure, ChronicKidney TransplantationMaleMicrobiotaPilot ProjectsTransplant RecipientsDNA, BacterialRNA, Ribosomal, 16SAcute kidney injury (AKI)Kidney transplantationMicrobiome researchUrinary microbiomeUrinary tract infection

Identifiers

PMID32252662
PMCPMC7133001
OpenAlexW3015051313

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.