Evidence map›Paper›PMID 32433480›Full record

SynthesisScientific reports2020

A meta-analysis of gene expression data highlights synaptic dysfunction in the hippocampus of brains with Alzheimer's disease.

Saeedeh Hosseinian, Ehsan Arefian, Hassan Rakhsh-Khorshid, Mehdi Eivani, Ameneh Rezayof, Hamid Pezeshk, Sayed-Amir Marashi

Abstract readMeta-Analysis
In one paragraph

Synthesis in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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

19 citing papers in PubMed.

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  16. CRISPR as a Diagnostic Tool.Biomolecules · 2021
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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.

Saeedeh HosseinianDepartment of Biotechnology, College of Science, University of Tehran, Tehran, Iran.
Ehsan ArefianDepartment of Microbiology, School of Biology, College of Science, University of Tehran, Tehran, Iran. arefian@ut.ac.ir.
Hassan Rakhsh-KhorshidDepartment of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
Mehdi EivaniNeuroscience Lab, Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.ORCID http://orcid.org/0000-0003-0460-4672
Ameneh RezayofNeuroscience Lab, Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
Hamid PezeshkSchool of Mathematics, Statistics and Computer Science, College of Science, University of Tehran, Tehran, Iran.ORCID http://orcid.org/0000-0003-0399-1690
Sayed-Amir MarashiDepartment of Biotechnology, College of Science, University of Tehran, Tehran, Iran.ORCID http://orcid.org/0000-0001-9801-7449

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Since the world population is ageing, dementia is going to be a growing concern. Alzheimer's disease is the most common form of dementia. The pathogenesis of Alzheimer's disease is extensively studied, yet unknown remains. Therefore, we aimed to extract new knowledge from existing data. We analysed about 2700 upregulated genes and 2200 downregulated genes from three studies on the CA1 of the hippocampus of brains with Alzheimer's disease. We found that only the calcium signalling pathway enriched by 48 downregulated genes was consistent between all three studies. We predicted miR-129 to target nine out of 48 genes. Then, we validated miR-129 to regulate six out of nine genes in HEK cells. We noticed that four out of six genes play a role in synaptic plasticity. Finally, we confirmed the upregulation of miR-129 in the hippocampus of brains of rats with scopolamine-induced amnesia as a model of Alzheimer's disease. We suggest that future research should investigate the possible role of miR-129 in synaptic plasticity and Alzheimer's disease. This paper presents a novel framework to gain insight into potential biomarkers and targets for diagnosis and treatment of diseases.

Indexed as

Alzheimer DiseaseAnimalsBrainHippocampusMaleMicroarray AnalysisNeuronal PlasticityRats

Identifiers

PMID32433480
PMCPMC7239885

What OpenQuestion holds

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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.