Evidence map›Paper›PMID 36538099›Full record

Trial reportPsychopharmacology2023

Effects of baclofen on insular gain anticipation in alcohol-dependent patients - a randomized, placebo-controlled, pharmaco-fMRI pilot trial.

Patricia Pelz, Alexander Genauck, Robert C Lorenz, Torsten Wüstenberg, Carolin Wackerhagen, Katrin Charlet, Tobias Gleich, Olga Geisel, Andreas Heinz, Christian A Müller and 1 more

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Psychopharmacology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.2field-weighted citation impact, top 55% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Trial
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

11 authors at 7 institutions in 2 countries.

Patricia PelzDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany. patricia.pelz@charite.de.ORCID http://orcid.org/0000-0001-7494-546X
Alexander GenauckDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Robert C LorenzDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Torsten WüstenbergDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Carolin WackerhagenDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Katrin CharletDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Tobias GleichDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Olga GeiselDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Andreas HeinzDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Christian A MüllerDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Anne BeckDepartment of Psychiatry and Neurosciences | CCM, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
Charité - Universitätsmedizin Berlin · DEBernstein Center for Computational Neuroscience Berlin · DEEvangelisches Krankenhaus Königin Elisabeth Herzberge · DEHeidelberg University · DEMax Planck Institute for Human Development · DENational Institute on Alcohol Abuse and Alcoholism · USUniversity of Potsdam · DE

Funding

Deutsche Forschungsgemeinschaft DFG: Project-ID 402170461 - TRR 265Deutsche Forschungsgemeinschaft EXC 257
6 · The paper itself

Abstract

rationaleOne hallmark of addiction is an altered neuronal reward processing. In healthy individuals (HC), reduced activity in fronto-striatal regions including the insula has been observed when a reward anticipation task was performed repeatedly. This effect could indicate a desensitization of the neural reward system due to repetition. Here, we investigated this hypothesis in a cohort of patients with alcohol use disorder (AUD), who have been treated with baclofen or a placebo. The efficacy of baclofen in AUD patients has been shown to have positive clinical effects, possibly via indirectly affecting structures within the neuronal reward system.

objectivesTwenty-eight recently detoxified patients (13 receiving baclofen (BAC), 15 receiving placebo (PLA)) were investigated within a longitudinal, double-blind, and randomized pharmaco-fMRI design with an individually adjusted daily dosage of 30-270 mg.

methodsBrain responses were captured by functional magnetic resonance imaging (fMRI) during reward anticipation while participating in a slot machine paradigm before (t1) and after 2 weeks of individual high-dose medication (t2).

resultsAbstinence rates were significantly higher in the BAC compared to the PLA group during the 12-week high-dose medication phase. At t1, all patients showed significant bilateral striatal activation. At t2, the BAC group showed a significant decrease in insular activation compared to the PLA group.

conclusionsBy affecting insular information processing, baclofen might enable a more flexible neuronal adaptation during recurrent reward anticipation, which could resemble a desensitization as previously observed in HC. This result strengthens the modulation of the reward system as a potential mechanism of action of baclofen.

trial registrationIdentifier of the main trial (the BACLAD study) at clinical.gov: NCT0126665.

Indexed as

AlcoholismCentral Nervous System DepressantsAnticipation, PsychologicalBaclofenEthanolHumansMagnetic Resonance ImagingPilot ProjectsPolyestersRewardBaclofenCentral Nervous System DepressantsEthanolPolyestersAlcohol use disorderBaclofenFunctional magnetic resonance imaging (fMRI)Pharmaco-fMRIReward processingSlot machine

Identifiers

PMID36538099
PMCPMC9816215
OpenAlexW4312019708

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.