Evidence map›Paper›PMID 25308351›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2015

Smoking restores impaired LTD-like plasticity in schizophrenia: a transcranial direct current stimulation study.

Wolfgang Strube, Tilmann Bunse, Michael A Nitsche, Thomas Wobrock, Richard Aborowa, Kristina Misewitsch, Maximiliane Herrmann, Peter Falkai, Alkomiet Hasan

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In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Potentiation of M1 Muscarinic Receptor Reverses Plasticity Deficits and Negative and Cognitive Symptoms in a Schizophrenia Mouse Model.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2016
    Article
  10. Review
  11. Review
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

9 authors at 3 institutions in 1 country.

Wolfgang StrubeDepartment of Psychiatry and Psychotherapy, Ludwig Maximilian University, Munich, Germany.
Tilmann BunseDepartment of Psychiatry and Psychotherapy, Ludwig Maximilian University, Munich, Germany.
Michael A NitscheDepartment of Clinical Neurophysiology, University of Goettingen, Goettingen, Germany.
Thomas Wobrock1] Centre of Mental Health, Darmstadt-Dieburg Clinics, Darmstadt, Germany [2] Department of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany.
Richard AborowaDepartment of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany.
Kristina MisewitschDepartment of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany.
Maximiliane HerrmannDepartment of Psychiatry and Psychotherapy, University of Goettingen, Goettingen, Germany.
Peter FalkaiDepartment of Psychiatry and Psychotherapy, Ludwig Maximilian University, Munich, Germany.
Alkomiet HasanDepartment of Psychiatry and Psychotherapy, Ludwig Maximilian University, Munich, Germany.
Ludwig-Maximilians-Universität München · DEUniversity of Göttingen · DEKlinikum Darmstadt · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Impaired neuroplastic responses following noninvasive brain stimulation have been reported repeatedly in schizophrenia patients. These findings have been associated with deficits in GABAergic, glutamatergic, and cholinergic neurotransmission. Although various neurophysiological studies have indicated a relationship between nicotine and neuroplasticity in healthy individuals, the present study is the first investigation into the impact of nicotine on LTD-like plasticity in patients with schizophrenia. Cortical excitability and cortical plasticity were explored in 30 schizophrenia patients (17 smoker, 13 nonsmoker) and 45 healthy controls (13 smoker, 32 nonsmoker) by using single-pulse transcranial magnetic stimulation (TMS) before and following cathodal transcranial direct current stimulation (tDCS) applied to the left primary motor cortex. Our analysis revealed abolished LTD-like plasticity in nonsmoking schizophrenia patients. However, these plasticity deficits were not present in smoking schizophrenia patients. In healthy controls, significant MEP reductions following cathodal tDCS were observed in nonsmoking individuals, but only trend-level reductions in smokers. In smoking schizophrenia patients, the severity of negative symptoms correlated positively with reduced neuroplasticity, whereas nonsmoking patients displayed the opposite effect. Taken together, the data of our study support the notion of an association between chronic smoking and the restitution of impaired LTD-like plasticity in schizophrenia patients. Although replication and further research are needed to better understand this relationship, our findings indicate that nicotine intake might stabilize the impaired inhibition-facilitation balance in the schizophrenic brain through a complex interaction between cortical plasticity, and GABAergic and cholinergic neurotransmission, and might explain the reduced prevalence of negative symptoms in this population.

Indexed as

Transcranial Magnetic StimulationAdolescentAdultAnalysis of VarianceCerebral CortexChi-Square DistributionEvoked Potentials, MotorFemaleHumansLong-Term Synaptic DepressionMaleRetrospective StudiesSchizophreniaSmokingStatistics as TopicYoung Adult

Identifiers

PMID25308351
PMCPMC4330512
OpenAlexW1991516231

What OpenQuestion holds

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Read underepoch 390

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.