Evidence map›Paper›PMID 36935083›Full record

ArticleNeuroImage2023

The effects of propofol anaesthesia on molecular-enriched networks during resting-state and naturalistic listening.

Timothy Lawn, Daniel Martins, Owen O'Daly, Steve Williams, Matthew Howard, Ottavia Dipasquale

Abstract read
In one paragraph

Article in NeuroImage, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. 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

6 authors.

Timothy LawnDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK. Electronic address: timothy.lawn@kcl.ac.uk.
Daniel MartinsDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK.
Owen O'DalyDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK.
Steve WilliamsDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK.
Matthew HowardDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK.
Ottavia DipasqualeDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's college London, London, UK.

Funding

Department of HealthMedical Research Council MR/N026969/1
6 · The paper itself

Abstract

Placing a patient in a state of anaesthesia is crucial for modern surgical practice. However, the mechanisms by which anaesthetic drugs, such as propofol, impart their effects on consciousness remain poorly understood. Propofol potentiates GABAergic transmission, which purportedly has direct actions on cortex as well as indirect actions via ascending neuromodulatory systems. Functional imaging studies to date have been limited in their ability to unravel how these effects on neurotransmission impact the system-level dynamics of the brain. Here, we leveraged advances in multi-modal imaging, Receptor-Enriched Analysis of functional Connectivity by Targets (REACT), to investigate how different levels of propofol-induced sedation alter neurotransmission-related functional connectivity (FC), both at rest and when individuals are exposed to naturalistic auditory stimulation. Propofol increased GABA-A- and noradrenaline transporter-enriched FC within occipital and somatosensory regions respectively. Additionally, during auditory stimulation, the network related to the dopamine transporter showed reduced FC within bilateral regions of temporal and mid/posterior cingulate cortices, with the right temporal cluster showing an interaction between auditory stimulation and level of consciousness. In bringing together these micro- and macro-scale systems, we provide support for both direct GABAergic and indirect noradrenergic and dopaminergic-related network changes under propofol sedation. Further, we delineate a cognition-related reconfiguration of the dopaminergic network, highlighting the utility of REACT to explore the molecular substrates of consciousness and cognition.

Indexed as

AnesthesiaPropofolBrainConsciousnessHumansMagnetic Resonance ImagingNeural PathwaysPropofolAnaesthesiaConsciousnessfMRIMolecularNaturalisticReceptor

Identifiers

PMID36935083
PMCPMC10410200

What OpenQuestion holds

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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.