Evidence map›Paper›PMID 23133548›Full record

ArticlePloS one2012

Circulating angiogenic cells can be derived from cryopreserved peripheral blood mononuclear cells.

Tanja Sofrenovic, Kimberly McEwan, Suzanne Crowe, Jenelle Marier, Robbie Davies, Erik J Suuronen, Drew Kuraitis

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 34% 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

4 citing papers in PubMed, 9 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

7 authors at 1 institution in 1 country.

Tanja SofrenovicDivision of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Canada.
Kimberly McEwan
Suzanne Crowe
Jenelle Marier
Robbie Davies
Erik J Suuronen
Drew Kuraitis
University of Ottawa · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

backgroundCell transplantation for regenerative medicine has become an appealing therapeutic method; however, stem and progenitor cells are not always freshly available. Cryopreservation offers a way to freeze cells as they are generated, for storage and transport until required for therapy. This study was performed to assess the feasibility of cryopreserving peripheral blood mononuclear cells (PBMCs) for the subsequent in vitro generation of their derived therapeutic population, circulating angiogenic cells (CACs).

methodsPBMCs were isolated from healthy human donors. Freshly isolated cells were either analyzed immediately or cryopreserved in media containing 6% plasma serum and 5% dimethyl sulfoxide. PBMCs were thawed after being frozen for 1 (early thaw) or 28 (late thaw) days and analyzed, or cultured for 4 days to generate CACs. Analysis of the cells consisted of flow cytometry for viability and phenotype, as well as functional assays for their adhesion and migration potential, cytokine secretion, and in vivo angiogenic potential.

resultsThe viability of PBMCs and CACs as well as their adhesion and migration properties did not differ greatly after cryopreservation. Phenotypic changes did occur in PBMCs and to a lesser extent in CACs after freezing; however the potent CD34(+)VEGFR2(+)CD133(+) population remained unaffected. The derived CACs, while exhibiting changes in inflammatory cytokine secretion, showed no changes in the secretion of important regenerative and chemotactic cytokines, nor in their ability to restore perfusion in ischemic muscle.

conclusionOverall, it appears that changes do occur in cryopreserved PBMCs and their generated CACs; however, the CD34(+)VEGFR2(+)CD133(+) progenitor population, the secretion of pro-vasculogenic factors, and the in vivo angiogenic potential of CACs remain unaffected by cryopreservation.

Indexed as

Neovascularization, PhysiologicAC133 AntigenAntigens, CDAntigens, CD34Cell AdhesionCell MovementCell SurvivalCryopreservationFlow CytometryGlycoproteinsHumansImmunoglobulin GLectinsLeukocytes, MononuclearLipoproteins, LDLPeptidesAC133 AntigenAntigens, CDAntigens, CD34GlycoproteinsImmunoglobulin GLectinsLipoproteins, LDLPeptidesPROM1 protein, humanVascular Endothelial Growth Factor Receptor-2

Identifiers

PMID23133548
PMCPMC3483876
OpenAlexW2069889949

What OpenQuestion holds

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LicenceCC BY
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.