Evidence map›Paper›PMID 24671797›Full record

ArticleJournal of clinical microbiology2014

Massive parallel sequencing provides new perspectives on bacterial brain abscesses.

Øyvind Kommedal, Marianne Thulin Wilhelmsen, Steinar Skrede, Roger Meisal, Aleksandra Jakovljev, Peter Gaustad, Nils Olav Hermansen, Einar Vik-Mo, Ole Solheim, Ole Herman Ambur and 3 more

Abstract read
In one paragraph

Article in Journal of clinical microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
–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

39 citing papers in PubMed.

  1. International journal of systematic and evolutionary microbiology · 2026
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  5. Future microbiology · 2025
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  10. Microbiology ofOpen forum infectious diseases · 2024
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  11. Review
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  14. Polymicrobial infections with specificJournal of oral microbiology · 2024
    Review
  15. Pleural Empyema Caused by Streptococcus intermedius and Fusobacterium nucleatum: A Distinct Entity of Pleural Infections.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  16. Review
  17. Article
  18. Article
  19. Journal of oral microbiology · 2022
    Review
  20. SpontaneousClinical case reports · 2022
    Article
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

13 authors.

Øyvind KommedalDepartment of Microbiology, Haukeland University Hospital, Bergen, Norway oyvind.kommedal@helse-bergen.no.
Marianne Thulin WilhelmsenDepartment of Microbiology, Haukeland University Hospital, Bergen, Norway.
Steinar SkredeDepartment of Medicine, Haukeland University Hospital, Bergen, Norway Department of Clinical Science, University of Bergen, Bergen, Norway.
Roger MeisalDepartment of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway.
Aleksandra JakovljevDepartment of Microbiology, St. Olav's University Hospital, Trondheim, Norway.
Peter GaustadDepartment of Microbiology, Oslo University Hospital, Oslo, Norway.
Nils Olav HermansenDepartment of Microbiology, Oslo University Hospital, Oslo, Norway.
Einar Vik-MoDepartment of Neurosurgery, Oslo University Hospital, Oslo, Norway.
Ole SolheimDepartment of Neurosurgery, St. Olav's University Hospital, Trondheim, Norway Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway.
Ole Herman AmburDepartment of Microbiology and Infection Control, Akershus University Hospital, Lørenskog, Norway.
Øystein SæbøIsentio, Inc., Palo Alto, California, USA.
Christina Teisner HøstmælingenDepartment of Neurosurgery, University of North Norway, Tromsø, Norway.
Christian HellandDepartment of Neurosurgery, Haukeland University Hospital, Bergen, Norway Department of Clinical Medicine, University of Bergen, Bergen, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rapid development within the field of massive parallel sequencing (MPS) is about to bring this technology within reach for diagnostic microbiology laboratories. We wanted to explore its potential for improving diagnosis and understanding of polymicrobial infections, using bacterial brain abscesses as an example. We conducted a prospective nationwide study on bacterial brain abscesses. Fifty-two surgical samples were included over a 2-year period. The samples were categorized as either spontaneous intracerebral, spontaneous subdural, or postoperative. Bacterial 16S rRNA genes were amplified directly from the specimens and sequenced using Ion Torrent technology, with an average of 500,000 reads per sample. The results were compared to those from culture- and Sanger sequencing-based diagnostics. Compared to culture, MPS allowed for triple the number of bacterial identifications. Aggregatibacter aphrophilus, Fusobacterium nucleatum, and Streptococcus intermedius or combinations of them were found in all spontaneous polymicrobial abscesses. F. nucleatum was systematically detected in samples with anaerobic flora. The increased detection rate for Actinomyces spp. and facultative Gram-negative rods further revealed several species associations. We suggest that A. aphrophilus, F. nucleatum, and S. intermedius are key pathogens for the establishment of spontaneous polymicrobial brain abscesses. In addition, F. nucleatum seems to be important for the development of anaerobic flora. MPS can accurately describe polymicrobial specimens when a sufficient number of reads is used to compensate for unequal species concentrations and principles are defined to discard contaminant bacterial DNA in the subsequent data analysis. This will contribute to our understanding of how different types of polymicrobial infections develop.

Indexed as

BacteriaBacterial InfectionsBrain AbscessCoinfectionDNA, BacterialDNA, RibosomalHigh-Throughput Nucleotide SequencingHumansProspective StudiesRNA, Ribosomal, 16SDNA, BacterialDNA, RibosomalRNA, Ribosomal, 16S

Identifiers

PMID24671797
PMCPMC4042731

What OpenQuestion holds

Textmetadata
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.