Evidence map›Paper›PMID 31403210›Full record

ArticleMicrobiology and immunology2019

Caspase-1 inflammasome activity in patients with Staphylococcus aureus bacteremia.

Gunlög Rasmussen, Berhane Asfaw Idosa, Anders Bäckman, Stefan Monecke, Kristoffer Strålin, Eva Särndahl, Bo Söderquist

Open access · hybridAbstract read
In one paragraph

Article in Microbiology and immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.8field-weighted citation impact, top 30% 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

12 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Review
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  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Inflammasomes in Alveolar Bone Loss.Frontiers in immunology · 2021
    Review
  11. Review
  12. 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

7 authors at 3 institutions in 2 countries.

Gunlög RasmussenDepartment of Infectious Diseases, Örebro University Hospital, Örebro, Sweden.ORCID http://orcid.org/0000-0003-2784-859X
Berhane Asfaw IdosaSchool of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Anders BäckmanDepartment of Clinical Research Laboratory, Faculty of Medicine and Health, Örebro University, Sweden.
Stefan MoneckeLeibniz Institute of Photonic Technology (IPHT), InfectoGnostics Research Campus Jena, Jena, Germany.
Kristoffer StrålinDepartment of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden.
Eva SärndahlSchool of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Bo SöderquistDepartment of Infectious Diseases, Örebro University Hospital, Örebro, Sweden.
Örebro University · SEKarolinska University Hospital · SELeibniz Institute of Photonic Technology · DE

Funding

ALF research funding in Region Örebro County, SwedenNyckelfonden in Region Örebro County, SwedenRegion Örebro County's Research Committee, Sweden
6 · The paper itself

Abstract

The inflammasome is a multiprotein complex that mediates caspase-1 activation with subsequent maturation of the proinflammatory cytokines IL-1β and IL-18. The NLRP3 inflammasome is known to be activated by Staphylococcus aureus, one of the leading causes of bacteremia worldwide. Inflammasome activation and regulation in response to bacterial infection have been found to be of importance for a balanced host immune response. However, inflammasome signaling in vivo in humans initiated by S. aureus is currently sparsely studied. This study therefore aimed to investigate NLRP3 inflammasome activity in 20 patients with S. aureus bacteremia (SAB), by repeated measurement during the first week of bacteremia, compared with controls. Caspase-1 activity was measured in monocytes and neutrophils by flow cytometry detecting FLICA (fluorescent-labeled inhibitor of caspase-1), while IL-1β and IL-18 was measured by Luminex and ELISA, respectively. As a measure of inflammasome priming, messenger RNA (mRNA) expression of NLRP3, CASP1 (procaspase-1), and IL1B (pro-IL-1β) was analyzed by quantitative PCR. We found induced caspase-1 activity in innate immune cells with subsequent release of IL-18 in patients during the acute phase of bacteremia, indicating activation of the inflammasome. There was substantial interindividual variation in caspase-1 activity between patients with SAB. We also found an altered inflammasome priming with low mRNA levels of NLRP3 accompanied by elevated mRNA levels of IL1B. This increased knowledge of the individual host immune response in SAB could provide support in the effort to optimize management and treatment of each individual patient.

Indexed as

AdultAgedAged, 80 and overBacteremiaCaspase 1FemaleHumansInflammasomesInterleukin-18Interleukin-1betaMaleMiddle AgedNLR Family, Pyrin Domain-Containing 3 ProteinStaphylococcal InfectionsStaphylococcus aureusCaspase 1IL18 protein, humanIL1B protein, humanInflammasomesInterleukin-18Interleukin-1betaNLR Family, Pyrin Domain-Containing 3 ProteinNLRP3 protein, humancaspase-1NLRP3sepsisStaphylococcus aureus

Identifiers

PMID31403210
PMCPMC6916170
OpenAlexW2766434916

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.