Evidence map›Paper›PMID 20614851›Full record

ArticleSleep2010

Benzodiazepine receptor agonists cause drug-specific and state-specific alterations in EEG power and acetylcholine release in rat pontine reticular formation.

Viviane S Hambrecht-Wiedbusch, Elizabeth A Gauthier, Helen A Baghdoyan, Ralph Lydic

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.9field-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

18 citing papers in PubMed, 35 citations in OpenAlex.

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  15. Endogenous GABA levels in the pontine reticular formation are greater during wakefulness than during rapid eye movement sleep.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Article
  16. Neuropharmacology of Sleep and Wakefulness.Sleep medicine clinics · 2010
    Article
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  18. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Viviane S Hambrecht-WiedbuschDepartment of Anesthesiology, University of Michigan, 7433 Medical Science Building 1, 1150 West Medical Center Drive, Ann Arbor, MI 48109-5615, USA.
Elizabeth A Gauthier
Helen A Baghdoyan
Ralph Lydic
University of Michigan–Ann Arbor · USRegional West Medical Center · US

Funding

CHOLINERGIC MECHANISMS OF REM SLEEP GENERATIONR37MH045361 · NIMH · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI BAGHDOYAN, HELEN A · 2004 to 2013
$3.4M
CHOLINERGIC MECHANISMS OF BREATHING DURING SLEEPR01HL040881 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LYDIC, RALPH · 1989 to 2010
$3.3M
CHOLINERGIC PHENOTYPE IN MURINE MODELS OF SLEEPR01HL065272 · NHLBI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI LYDIC, RALPH · 1999 to 2013
$3.2M
OPIOID INDUCED REM SLEEP INHIBITIONR01HL057120 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LYDIC, RALPH · 1997 to 2005
$2.0M
CHOLINERGIC MECHANISMS OF REM SLEEP GENERATIONR01MH045361 · NIMH · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BAGHDOYAN, HELEN A · 1994 to 2003
$807k
CHOLINERGIC MECHANISMS OF REM SLEEP GENERATIONR29MH045361 · NIMH · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI BAGHDOYAN, HELEN A · 1989 to 1993
–
NHLBI NIH HHS HL40881NHLBI NIH HHS HL57120NHLBI NIH HHS HL65272NHLBI NIH HHS R01 HL040881NHLBI NIH HHS R01 HL057120NHLBI NIH HHS R01 HL065272NIMH NIH HHS MH45361NIMH NIH HHS R01 MH045361NIMH NIH HHS R37 MH045361
6 · The paper itself

Abstract

STUDY

objectivesBenzodiazepine (BDZ) and non-benzodiazepine (NBDZ) hypnotics enhance GABAergic transmission and are widely used for the treatment of insomnia. In the pontine reticular formation (PRF), GABA inhibits rapid eye movement (REM) sleep and acetylcholine (ACh) release. No previous studies have characterized the effects of BDZ and NBDZ hypnotics on ACh release in the PRF. This study tested 2 hypotheses: (1) that microdialysis delivery of zolpidem, eszopiclone, and diazepam to rat PRF alters ACh release in PRF and electroencephalographic (EEG) delta power and (2) that intravenous (i.v.) administration of eszopiclone to non-anesthetized rat alters ACh release in the PRF, sleep, and EEG delta power.

designA within- and between-groups experimental design.

settingUniversity of Michigan. PATIENTS OR

participantsAdult male Crl:CD*(SD) (Sprague-Dawley) rats (n = 57).

interventionsIn vivo microdialysis of the PRF in rats anesthetized with isoflurane was used to derive the concentration-response effects of zolpidem, eszopiclone, and diazepam on ACh release. Chronically instrumented rats were used to quantify the effects of eszopiclone (3 mg/kg, i.v.) on ACh release in the PRF, sleep-wake states, and cortical EEG power. MEASUREMENTS AND

resultsACh release was significantly increased by microdialysis delivery to the PRF of zolpidem and eszopiclone but not diazepam. EEG delta power was increased by zolpidem and diazepam but not by eszopiclone administered to the PRF. Eszopiclone (i.v.) decreased ACh release in the PRF of both anesthetized and non-anesthetized rats. Eszopiclone (i.v.) prevented REM sleep and increased EEG delta power.

conclusionThe concentration-response data provide the first functional evidence that multiple GABA(A) receptor subtypes are present in rat PRF. Intravenously administered eszopiclone prevented REM sleep, decreased ACh release in the PRF, and increased EEG delta power. The effects of eszopiclone are consistent with evidence that ACh release in the PRF is lower during NREM sleep than during REM sleep, and with data showing that cholinergic stimulation of the PRF activates the cortical EEG.

Indexed as

AcetylcholineAnimalsAzabicyclo CompoundsBrainDiazepamDisease Models, AnimalDose-Response Relationship, DrugElectroencephalographyEszopicloneGABA AgonistsGABA-A Receptor AgonistsHypnotics and SedativesMaleMicrodialysisPiperazinesPonsAcetylcholineAzabicyclo CompoundsDiazepamEszopicloneGABA AgonistsGABA-A Receptor AgonistsHypnotics and SedativesPiperazinesPyridinesReceptors, GABA-AZolpidem

Identifiers

PMID20614851
PMCPMC2894433
OpenAlexW1579634270

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.