Evidence map›Paper›PMID 34917988›Full record

ArticleBrain, behavior, & immunity - health2021

Astrocyte-derived microparticles initiate a neuroinflammatory cycle due to carbon monoxide poisoning.

Deepa Ruhela, Veena M Bhopale, Sudhakar Kalakonda, Stephen R Thom

Open access · goldAbstract read
In one paragraph

Article in Brain, behavior, & immunity - health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

13 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
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  8. Review
  9. Review
  10. Hyperbaric oxygen should be used for carbon monoxide poisoning.British journal of clinical pharmacology · 2023
    Article
  11. Article
  12. Article
  13. Review
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

4 authors at 1 institution in 1 country.

Deepa RuhelaDepartment of Emergency Medicine, University of Maryland School of Medicine, USA.
Veena M BhopaleDepartment of Emergency Medicine, University of Maryland School of Medicine, USA.
Sudhakar KalakondaDepartment of Emergency Medicine, University of Maryland School of Medicine, USA.
Stephen R ThomDepartment of Emergency Medicine, University of Maryland School of Medicine, USA.
University of Maryland, Baltimore · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We hypothesized that carbon monoxide (CO) establishes an inflammatory cycle mediated by microparticles (MPs). Mice exposed to a CO protocol (1000 ​ppm for 40 ​min and then 3000 ​ppm for 20 ​min) that causes neuroinflammation exhibit NF-κB activation in astrocytes leading to generation of MPs expressing thrombospondin-1(TSP-1) that collect in deep cervical lymph nodes draining the brain glymphatic system. TSP-1 bearing MPs gain access to the blood stream where they activate neutrophils to generate a new family of MPs, and also stimulate endothelial cells as documented by leakage of intravenous 2000 ​kDa dextran. At the brain microvasculature, neutrophil and MPs sequestration, and myeloperoxidase activity result in elevations of the p65 subunit of NF-κB, serine 536 phosphorylated p65, CD36, and loss of astrocyte aquaporin-4 that persist for at least 7 days. Knock-out mice lacking the CD36 membrane receptor are resistant to all CO inflammatory changes. Events triggered by CO are recapitulated in naïve wild type mice injected with cervical node MPs from CO-exposed mice, but not control mice. All MPs-mediated events are inhibited with a NF-κB inhibitor, a myeloperoxidase inhibitor, or anti-TSP-1 antibodies. We conclude that astrocyte-derived MPs expressing TSP-1 establish a feed-forward neuroinflammatory cycle involving endothelial CD36-to-astrocyte NF-κB crosstalk. As there is currently no treatment for CO-induced neurological sequelae, these findings pose several possible sites for therapeutic interventions.

Indexed as

4-methyl-N1-(3-phenyl-propyl)-benzene-1,2-diamine, JSH-23Acetyl-lysyltyrosylcysteineacetyl-lysyltyrosylcysteine, KYCAquaporin-4Aquaporin-4, AQP4AstrocyteCarbon monoxide, COCarboxyhemoglobin, COHbCD36Glial fibrillary acidic protein, GFAPGlymphaticsMagnetic resonance imaging, MRIMicroparticles, MPsMyelin basic protein, MBPMyeloperoxidaseMyeloperoxidase, MPONeuronal pentraxin receptor, NPRNeutrophilNod-like receptor pyrin containing 3, NLRP3Nuclear factor- κB, NF-κBPhosphate buffered saline, PBSPhosphatidylserine, (PS)Thrombospondin-1Thrombospondin-1, TSP-1Transmembrane protein119, TMEM

Identifiers

PMID34917988
PMCPMC8645452
OpenAlexW3216176483

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.