Evidence map›Paper›PMID 27631879›Full record

ArticleMolecular neurobiology2017

Plasma miR-34a-5p and miR-545-3p as Early Biomarkers of Alzheimer's Disease: Potential and Limitations.

Marta Cosín-Tomás, Anna Antonell, Albert Lladó, Daniel Alcolea, Juan Fortea, Mario Ezquerra, Albert Lleó, Maria José Martí, Mercè Pallàs, Raquel Sanchez-Valle and 3 more

Abstract read
PubMed Publisher
In one paragraph

Article in Molecular neurobiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
95citing papers in PubMed, 4 pooled it
4.6field-weighted citation impact, top 5% 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

95 citing papers in PubMed, 4 syntheses or guidelines pooled it, 152 citations in OpenAlex.

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35 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

13 authors at 5 institutions in 2 countries.

Marta Cosín-TomásInstitut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain.
Anna AntonellAlzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain.
Albert LladóAlzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain.
Daniel AlcoleaMemory Unit, Department of Neurology, Institut d'Investigacions Biomèdiques Sant Pau, Hospital de Sant Pau de Barcelona, Barcelona, Spain.
Juan ForteaMemory Unit, Department of Neurology, Institut d'Investigacions Biomèdiques Sant Pau, Hospital de Sant Pau de Barcelona, Barcelona, Spain.
Mario EzquerraInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
Albert LleóMemory Unit, Department of Neurology, Institut d'Investigacions Biomèdiques Sant Pau, Hospital de Sant Pau de Barcelona, Barcelona, Spain.
Maria José MartíInstitut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
Mercè PallàsUnitat de Farmacologia, Facultat de Farmàcia, Institut de Neurociències, Universitat de Barcelona and CIBERNED, Barcelona, Spain.
Raquel Sanchez-ValleAlzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain.
José Luís MolinuevoAlzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Hospital Clínic, Barcelona, Spain.
Coral SanfeliuInstitut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain. coral.sanfeliu@iibb.csic.es.ORCID http://orcid.org/0000-0002-9004-1206
Perla KalimanInstitut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain. perlakaliman@gmail.com.
Hospital Clínic de Barcelona · ESHospital de Sant Pau · ESInstitut d'Investigacions Biomèdiques de Barcelona · ESBiomedical Research Networking Center on Neurodegenerative Diseases · ESConsejo Superior de Investigaciones Científicas · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plasma microRNAs (miRNAs) have been proposed as potential biomarkers in Alzheimer's disease (AD). Here, we explored their use as early sensors of the preclinical phase of the disease, when brain pathology is being developed and no cognitive loss is detected. For this purpose, we analyzed a set of ten mature plasma miRNAs in symptomatic patients with AD from a cohort that also included healthy controls (HC) and patients with preclinical Alzheimer's disease (PAD) (cohort 1). Plasmas from subjects with Parkinson's disease (PD) were used to control for disease specificity. We found that miR-15b-5p, miR-34a-5p, miR-142-3p, and miR-545-3p levels significantly distinguished AD from PD and HC subjects. We next examined the expression of these four miRNAs in plasma from subjects with PAD. Among these, miR-34a-5p and miR-545-3p presented good diagnostic accuracy to distinguish both AD and PAD from HC subjects, according to the receiver operating characteristic (ROC) curve analysis. Both miRNAs also demonstrated a significant positive correlation with Aβ1-42 levels in cerebrospinal fluid (CSF). Taking into account the clinical potential of these findings, we decided to validate the diagnostic accuracy of miR-34a-5p and miR-545-3p in plasma samples from an independent cohort (cohort 2), in which we did not observe the alterations described by us and others in AD and PAD samples. Although miR-34a-5p and miR-545-3p might be promising early biomarker candidates for AD, our study highlights possible sources of variability in miRNA analysis across hospitals, which currently prevents their use as reliable clinical tools.

Indexed as

Gene Expression ProfilingAgedAlzheimer DiseaseBiomarkersCohort StudiesFemaleHumansMaleMicroRNAsMiddle AgedROC CurveBiomarkersMicroRNAsMIR545 microRNA, humanMIRN34 microRNA, humanAlzheimer’s diseasemiR-34a-5pmiR-545-3pmiRNAPlasma biomarkerPreclinical

Identifiers

PMID27631879
OpenAlexW2517412327

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.