Evidence map›Paper›PMID 22274000›Full record

ArticlePsychopharmacology2012

Low BDNF is associated with cognitive impairment in chronic patients with schizophrenia.

Xiang Yang Zhang, Jun Liang, Da Chun Chen, Mei Hong Xiu, Fu De Yang, Therese A Kosten, Thomas R Kosten

Abstract read
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In one paragraph

Article in Psychopharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 5 pooled it
5.2field-weighted citation impact, top 3% 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

69 citing papers in PubMed, 5 syntheses or guidelines pooled it, 148 citations in OpenAlex.

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  17. Neurotrophic factors in multiple sclerosis.Frontiers in immunology · 2025
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9 more citing papers are in PubMed but not listed here.

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 3 institutions in 2 countries.

Xiang Yang ZhangMenninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA. xyzhang@bcm.edu
Jun Liang
Da Chun Chen
Mei Hong Xiu
Fu De Yang
Therese A Kosten
Thomas R Kosten
Baylor College of Medicine · USBeijing HuiLongGuan Hospital · CNPeking University Sixth Hospital · CN

Funding

COMORBIDITY IN COCAINE AND OPIOID PHARMACOTHERAPYK05DA000454 · NIDA · YALE UNIVERSITY · PI KOSTEN, THOMAS RICHARD · 2000 to 2010
$1.3M
Tropisetron with Risperidone for SchizophreniaU01MH079639 · NIMH · BAYLOR COLLEGE OF MEDICINE · PI KOSTEN, THOMAS RICHARD · 2007 to 2009
$827k
NIDA NIH HHS K05-DA0454NIDA NIH HHS P50-DA18827NIMH NIH HHS U01-MH79639
6 · The paper itself

Abstract

objectiveSeveral lines of evidence suggest that brain-derived neurotrophic factor (BDNF) plays a critical role in activity-dependent neuroplasticity underlying learning and memory in the hippocampus. Schizophrenia has a range of cognitive deficits that may evolve from decreased BDNF, and this study examines this association of BDNF with cognitive deficits in schizophrenia. MATERIALS AND

methodsWe recruited 251 chronic schizophrenic patients and 206 healthy control subjects and examined the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and serum BDNF in both groups. Schizophrenic symptoms were assessed using the Positive and Negative Syndrome Scale.

resultsBDNF levels were significantly lower in patients than controls (p < 0.001). Cognitive scores on the RBANS and nearly all of its five subscales (all p < 0.001) except for the visuospatial/constructional index (p > 0.05) were significantly lower in schizophrenic patients than normal controls. For the patients, BDNF was positively associated with immediate memory in schizophrenia.

conclusionOur findings suggest that BDNF may be involved in the pathophysiology of schizophrenia, and its associated cognitive impairment, especially immediate memory.

Indexed as

AdultAgedBrain-Derived Neurotrophic FactorCase-Control StudiesChronic DiseaseCognition DisordersCross-Sectional StudiesFemaleHumansMaleMemory DisordersMiddle AgedNeuropsychological TestsPsychiatric Status Rating ScalesSchizophreniaBrain-Derived Neurotrophic Factor

Identifiers

PMID22274000
OpenAlexW1983871874

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.