Evidence map›Paper›PMID 31839723›Full record

ArticleBiochemia medica2020

Study of the preanalytical variables affecting the measurement of clinically relevant free-circulating microRNAs: focus on sample matrix, platelet depletion, and storage conditions.

Martina Faraldi, Veronica Sansoni, Silvia Perego, Marta Gomarasca, Jakub Kortas, Ewa Ziemann, Giuseppe Banfi, Giovanni Lombardi

Open access · diamondAbstract read
In one paragraph

Article in Biochemia medica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 21% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

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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

8 authors at 3 institutions in 2 countries.

Martina FaraldiLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Veronica SansoniLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Silvia PeregoLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Marta GomarascaLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Jakub KortasDepartment of Physical Culture, Gdańsk University of Physical Education & Sport, Gdańsk, Poland.
Ewa ZiemannDepartment of Athletics, Strength and Conditioning, Poznan University of Physical Education, Poznan, Poland.
Giuseppe BanfiLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Giovanni LombardiLaboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto ortopedico Galeazzi, Milano, Italia.
Istituto Ortopedico Galeazzi · ITGdansk University of Physical Education and Sport · PLIstituti di Ricovero e Cura a Carattere Scientifico · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCirculating microRNAs (miRNAs) are emerging as potential biomarkers. However, the lack of preanalytical and analytical standardization limits their use. The aim of this study was to determine the expression of different miRNAs in plasma according to different collection and storage conditions. MATERIALS AND

methodsVenous blood from 10 volunteers was collected in tubes spray-coated with dipotassium salt of ethylendiaminetetraacetic acid, either with (plasma-preparation tube, PPT) or without (K2EDTA) gel separator. Platelet-poor plasma (PPP) was also obtained from K2EDTA plasma. After storage under different conditions, miRNA-enriched total RNA was isolated from plasma and reverse transcribed. A panel of 179 miRNAs was assayed by quantitative polymerase chain reaction and the results were analysed by GenEx software. Detectability and stability of miRNAs were determined.

resultsThe number of undetected miRNAs was: 18, 24, and 22 in PPT; 83, 43, and 20 in K2EDTA; and 76, 106, and 104 in PPP samples, for plasma immediately frozen at - 80°C and plasma stored for 24h at room temperature or 4°C, respectively. Circulating miRNA expression in PPT samples was not affected by storage delay or temperature, while the percentage of up- and down-regulated miRNA in K2EDTA and PPP samples ranged from 2%, and 1% to 7%, and 5%, respectively.

conclusionsSample matrix, temperature and delay in storage strongly influence the expression level of plasma miRNAs. Our results indicate PPT tubes as the most suitable matrix to improve total miRNA detectability and stability, independently of temperature.

Indexed as

AdultBiomarkersBlood PlateletsBlood Specimen CollectionCirculating MicroRNAHumansMalePre-Analytical PhaseTemperatureBiomarkersCirculating MicroRNAbiomarkerscirculating microRNAplasmapreanalytical phase

Identifiers

PMID31839723
PMCPMC6904965
OpenAlexW2997339409

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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.