Evidence map›Paper›PMID 33648701›Full record

ArticleBritish journal of anaesthesia2021

Electrophysiological signatures of acute systemic lipopolysaccharide-induced inflammation: potential implications for delirium science.

Ziyad W Sultan, Elizabeth R Jaeckel, Bryan M Krause, Sean M Grady, Caitlin A Murphy, Robert D Sanders, Matthew I Banks

Open access · greenAbstract read
In one paragraph

Article in British journal of anaesthesia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Animal models of delirium: a narrative review.Translational psychiatry · 2026
    Review
  4. Bedside EEG for rapid diagnosis of delirium.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Delirium is associated with loss of feedback cortical connectivity.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  12. Article
  13. Review
  14. Article
  15. Delirium and Cortical Complexity: Divergent Changes in Alpha and Theta Bands.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
    Article
  16. Article
  17. Article
  18. Reduced Electroencephalogram Complexity in Postoperative Delirium.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
    Article
  19. 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.

Ziyad W SultanDepartment of Anesthesiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA.
Elizabeth R JaeckelDepartment of Pharmacology, University of Michigan Medical School, Ann Arbor, MI, USA.
Bryan M KrauseDepartment of Anesthesiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA.
Sean M GradyDepartment of Anesthesiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA.
Caitlin A MurphyDepartment of Anesthesiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA.
Robert D SandersSpecialty of Anaesthetics, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; Department of Anaesthetics, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.
Matthew I BanksDepartment of Anesthesiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA. Electronic address: mibanks@wisc.edu.
University of Wisconsin–Madison · USUniversity of Michigan–Ann Arbor · USUniversity of Sydney · AU

Funding

Thalamic and cortical mechanisms of anesthetic-induced unconsciousnessR01GM109086 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI Matthew I Banks, Kirill V Nourski · 2014 to 2026
$5.7M
Clarifying the overlapping pathology of delirium and dementiaR01AG063849 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI Richard C Lennertz, Robert D Sanders · 2019 to 2026
$5.0M
NIA NIH HHS R01 AG063849NIGMS NIH HHS R01 GM109086
6 · The paper itself

Abstract

backgroundNovel preventive therapies are needed for postoperative delirium, which especially affects older patients. A mouse model is presented that captures inflammation-associated cortical slow wave activity (SWA) observed in patients, allowing exploration of the mechanistic role of prostaglandin-adenosine signalling.

methodsEEG and cortical cytokine measurements (interleukin 6, monocyte chemoattractant protein-1) were obtained from adult and aged mice. Behaviour, SWA, and functional connectivity were assayed before and after systemic administration of lipopolysaccharide (LPS)+piroxicam (cyclooxygenase inhibitor) or LPS+caffeine (adenosine receptor antagonist). To avoid the confounder of inflammation-driven changes in movement which alter SWA and connectivity, electrophysiological recordings were classified as occurring during quiescence or movement, and propensity score matching was used to match distributions of movement magnitude between baseline and post-LPS administration.

resultsLPS produces increases in cortical cytokines and behavioural quiescence. In movement-matched data, LPS produces increases in SWA (likelihood-ratio test: χ

conclusionsCytokine-SWA correlations during wakefulness are consistent with observations in patients with delirium. Absence of connectivity effects after accounting for movement changes suggests decreased connectivity in patients is a biomarker of hypoactivity. Exaggerated effects in quiescent aged animals are consistent with increased hypoactive delirium in older patients. Prostaglandin-adenosine signalling may link inflammation to neural changes and hence delirium.

Indexed as

AdenosineAge FactorsAnimalsCaffeineCerebral CortexCytokinesDeliriumDisease Models, AnimalElectroencephalographyElectrophysiological PhenomenaHumansInflammationLipopolysaccharidesMiceMice, Inbred C57BLPiroxicamAdenosineCaffeineCytokinesLipopolysaccharidesPiroxicamProstaglandinscytokinesdeliriumelectroencephalographyfunctional connectivityslow wave activity

Identifiers

PMID33648701
PMCPMC8132883
OpenAlexW3134663515

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.