Evidence map›Paper›PMID 22235132›Full record

Trial reportThe Journal of biological chemistry2012

Amyloid-β oligomers induce differential gene expression in adult human brain slices.

Adriano Sebollela, Leo Freitas-Correa, Fabio F Oliveira, Andrea C Paula-Lima, Leonardo M Saraiva, Samantha M Martins, Louise D Mota, Cesar Torres, Soniza Alves-Leon, Jorge M de Souza and 4 more

Abstract readClinical Trial
In one paragraph

Trial report in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing 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

51 citing papers in PubMed.

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  13. Modeling the Human Brain WithFrontiers in neuroscience · 2022
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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

14 authors.

Adriano SebollelaInstitute of Medical Biochemistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil. sebollela@bioqmed.ufrj.br
Leo Freitas-Correa
Fabio F Oliveira
Andrea C Paula-Lima
Leonardo M Saraiva
Samantha M Martins
Louise D Mota
Cesar Torres
Soniza Alves-Leon
Jorge M de Souza
Dirce M Carraro
Helena Brentani
Fernanda G De Felice
Sergio T Ferreira

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cognitive decline in Alzheimer disease (AD) is increasingly attributed to the neuronal impact of soluble oligomers of the amyloid-β peptide (AβOs). Current knowledge on the molecular and cellular mechanisms underlying the toxicity of AβOs stems largely from rodent-derived cell/tissue culture experiments or from transgenic models of AD, which do not necessarily recapitulate the complexity of the human disease. Here, we used DNA microarray and RT-PCR to investigate changes in transcription in adult human cortical slices exposed to sublethal doses of AβOs. The results revealed a set of 27 genes that showed consistent differential expression upon exposure of slices from three different donors to AβOs. Functional classification of differentially expressed genes revealed that AβOs impact pathways important for neuronal physiology and known to be dysregulated in AD, including vesicle trafficking, cell adhesion, actin cytoskeleton dynamics, and insulin signaling. Most genes (70%) were down-regulated by AβO treatment, suggesting a predominantly inhibitory effect on the corresponding pathways. Significantly, AβOs induced down-regulation of synaptophysin, a presynaptic vesicle membrane protein, suggesting a mechanism by which oligomers cause synapse failure. The results provide insight into early mechanisms of pathogenesis of AD and suggest that the neuronal pathways affected by AβOs may be targets for the development of novel diagnostic or therapeutic approaches.

Indexed as

Gene Expression RegulationAdultAlzheimer DiseaseAmyloid beta-PeptidesBrainFemaleGene Expression ProfilingHumansMaleNerve Tissue ProteinsOligonucleotide Array Sequence AnalysisAmyloid beta-PeptidesNerve Tissue Proteins

Identifiers

PMID22235132
PMCPMC3293600

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.