Evidence map›Paper›PMID 25539762›Full record

Trial reportPsychopharmacology2015

Effects of seven-day diazepam administration on resting-state functional connectivity in healthy volunteers: a randomized, double-blind study.

C Patrick Pflanz, Abbie Pringle, Nicola Filippini, Matthew Warren, Julia Gottwald, Phil J Cowen, Catherine J Harmer

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.3field-weighted citation impact, top 43% 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

10 citing papers in PubMed, 22 citations in OpenAlex.

  1. Local and global effects of sedation in resting-state fMRI: a randomized, placebo-controlled comparison between etifoxine and alprazolam.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Trial
  2. Article
  3. Mapping alterations in the local synchrony of the cerebral cortex in schizophrenia.European psychiatry : the journal of the Association of European Psychiatrists · 2023
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. General Anesthesia: A Probe to Explore Consciousness.Frontiers in systems neuroscience · 2019
    Article
  10. 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 2 institutions in 1 country.

C Patrick PflanzUniversity Department of Psychiatry, Warneford Hospital, Oxford, OX3 7JX, UK.
Abbie Pringle
Nicola Filippini
Matthew Warren
Julia Gottwald
Phil J Cowen
Catherine J Harmer
Warneford Hospital · GBUniversity of Oxford · GB

Funding

Medical Research Council G0801432
6 · The paper itself

Abstract

rationaleBenzodiazepines, such as diazepam, are anxiolytic-sedative drugs, used for the treatment of several different disorders. The pharmacological mechanism of action of benzodiazepines is well understood; however, it remains unclear which neural networks and systems are involved in translating these neurochemical actions into their therapeutic effects.

objectivesThe objective of this study was to investigate the effects of 7-day diazepam administration compared to placebo on resting-state functional connectivity in healthy adults independent of any task.

methodsThirty-four healthy participants were randomly assigned to receive either diazepam (N = 17) or placebo (15 mg daily for 7 days) and underwent resting-state functional magnetic resonance acquisition. Model-free data analysis was performed using independent component analysis and dual regression.

resultsConsistent with previous research, 11 resting-state networks were identified. Increased connectivity in response to diazepam administration was found in the medial visual network and middle/inferior temporal network. Diazepam did not cause any decreases in functional connectivity.

conclusionsDiazepam administration increases functional connectivity in areas of emotional processing independent of any task. Diazepam also enhanced functional connectivity in the medial visual system, which is a brain region rich in GABAA receptors, and shows high binding of GABAergic drugs. These increases in functional connectivity are characteristic of CNS depressants.

Indexed as

AdolescentAdultAnti-Anxiety AgentsBrainDiazepamDouble-Blind MethodFemaleHealthy VolunteersHumansMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysReceptors, GABA-ARestVisual PathwaysAnti-Anxiety AgentsDiazepamReceptors, GABA-A

Identifiers

PMID25539762
OpenAlexW1968672177

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.