Evidence map›Paper›PMID 34625629›Full record

ArticleScientific reports2021

Genetic polymorphisms of BDNF on cognitive functions in drug-naive first episode patients with schizophrenia.

Xiuru Su, Limin Qiao, Qing Liu, Yujie Shang, Xiaoni Guan, Meihong Xiu, Xiangyang Zhang

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 28% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
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  3. Early efficacy of rTMS intervention at week 2 predicts subsequent responses at week 24 in schizophrenia in a randomized controlled trial.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
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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 5 institutions in 1 country.

Xiuru Su *Department of Psychiatry, Hebei Province Veterans Hospital, Baoding, People's Republic of China.
Limin Qiao *Lian Yang Community Health Service Center, Shanghai, People's Republic of China.
Qing LiuQingdao Mental Health Center, Qingdao University, Qingdao, People's Republic of China.
Yujie ShangDepartment of Psychiatry, Hebei Province Veterans Hospital, Baoding, People's Republic of China.
Xiaoni GuanPeking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Changping District, Beijing, 100096, People's Republic of China.
Meihong XiuPeking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Changping District, Beijing, 100096, People's Republic of China. xiumeihong9797@gmail.com.
Xiangyang ZhangCAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing, 100101, People's Republic of China. zhangxy9@gmail.com.
Hospital of Hebei Province · CNBeijing HuiLongGuan Hospital · CNInstitute of Psychology, Chinese Academy of Sciences · CNPeking University · CNQingdao Mental Health Center · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF) is reported to be involved in cognitive decline in patients with schizophrenia (SZ). Previous studies have found that cognitive deficits remain stable during the chronic disease phase in SZ, but the findings were inconsistent. The role of BDNF in cognitive deficits at different stage of illness remains unclear. This study aimed to examine the effect of BDNF polymorphisms on cognitive deficits in drug-naïve first-episode (DNFE) patients and chronic patients with SZ. 262 DNFE patients, 844 chronic patients, and 1043 healthy controls were recruited to compare 4 polymorphisms in BDNF gene and cognitive function. We found that there was no significant difference in genotype and allele frequencies between SZ patients and controls. However, they were closely related to cognitive functioning. BDNF rs2030324 polymorphism played a strong role in language performance only in DNFE patients with SZ. The language index of DNFE patients with rs2030324 TT and TC genotypes was worse than that of chronic patients, but there was no significant difference in CC genotypes between DNFE and chronic patients. Rs6265 had no significant effect on cognitive functioning in patients and controls. Our result suggests BDNF gene polymorphisms were related to different domains of cognitive function at the different stage of SZ, especially language in DNFE patients.

Indexed as

Polymorphism, GeneticAdolescentAdultAgedBrain-Derived Neurotrophic FactorCase-Control StudiesCognition DisordersFemaleFollow-Up StudiesGenotypeHumansMaleMiddle AgedPharmaceutical PreparationsPrognosisSchizophreniaBDNF protein, humanBrain-Derived Neurotrophic FactorPharmaceutical Preparations

Identifiers

PMID34625629
PMCPMC8501135
OpenAlexW3203420923

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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.