Evidence map›Paper›PMID 27494844›Full record

ArticleOncotarget2016

Dose-dependent genotype effects of BDNF Val66Met polymorphism on default mode network in early stage Alzheimer's disease.

Pin-Hsuan Lin, Shih-Jen Tsai, Chi-Wei Huang, Liu Mu-En, Shih-Wei Hsu, Chen-Chang Lee, Nai-Ching Chen, Ya-Ting Chang, Min-Yu Lan, Chiung-Chih Chang

Abstract read
In one paragraph

Article in Oncotarget, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Observational
  3. Review
  4. Article
  5. Influence ofAging and disease · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Critical Issues inFrontiers in molecular neuroscience · 2018
    Review
  13. Article
  14. Article
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

10 authors.

Pin-Hsuan LinDepartment of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.
Shih-Jen TsaiPsychiatric Department of Taipei Veterans General Hospital, Taipei, Taiwan.
Chi-Wei HuangDepartment of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.
Liu Mu-EnPsychiatric Division, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
Shih-Wei HsuDepartment of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Chen-Chang LeeDepartment of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Nai-Ching ChenDepartment of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.
Ya-Ting ChangDepartment of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.
Min-Yu LanDepartment of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Chiung-Chih ChangDepartment of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In humans, brain-derived neurotrophic factor (BDNF) has been shown to play a pivotal role in neurocognition, and its gene contains a functional polymorphism (Val66Met) that may explain individual differences in brain volume and memory-related activity.In this study, we enrolled 186 Alzheimer's disease (AD) patients who underwent 3D T1 magnetic resonance imaging, and explored the gray matter (GM) structural covariance networks (SCN). The patients were divided into three groups according to their genotype: Met/Met (n = 45), Val/Met (n = 86) and Val/Val (n = 55). Seed-based analysis was performed focusing on four SCN networks. Neurobehavioral scores served as the major outcome factor.Only peak cluster volumes of default mode medial temporal lobe network showed significant genotype interactions, of which the interconnected peak clusters showed dose-dependent genotype effects. There were also significant correlations between the cognitive test scores and interconnected-cluster volumes, especially in the orbitofrontal cortex.These findings support the hypothesis that BDNF rs6265 polymorphisms modulate entorhinal cortex-interconnected clusters and the valine allele was associated with stronger structural covariance patterns that determined the cognitive outcomes.

Indexed as

Polymorphism, GeneticAgedAged, 80 and overAlzheimer DiseaseBrain-Derived Neurotrophic FactorCognitionEntorhinal CortexFemaleGenotypeHumansMagnetic Resonance ImagingMaleMiddle AgedTemporal LobeBDNF protein, humanBrain-Derived Neurotrophic FactorAlzheimer’s diseaseanatomical structural covariancebrain-derived neurotrophic factordefault mode networkgenetic dosage effectGerotarget

Identifiers

PMID27494844
PMCPMC5342335

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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.