Evidence map›Paper›PMID 23312395›Full record

ArticleEarly human development2013

Circulating hematopoietic and endothelial progenitor cells in newborn infants: effects of gestational age, postnatal age and clinical stress in the first 3 weeks of life.

Kim Chi T Bui, Mark Weems, Manoj Biniwale, Aswathi A George, Ewa Zielinska, Colleen G Azen, Manuel Durand, Hisham Abdel-Azim

Open access · greenAbstract read
In one paragraph

Article in Early human development, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 26% 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

13 citing papers in PubMed, 17 citations in OpenAlex.

  1. Endothelial Progenitor Cells in Life, Pregnancy and Disease.Expert reviews in molecular medicine · 2025
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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 4 institutions in 1 country.

Kim Chi T BuiDivision of Neonatal Medicine, Department of Pediatrics; Keck School of Medicine of the University of Southern California, LAC+USC Medical Center and Children's Hospital Los Angeles, Los Angeles, CA 90033, USA. kimchibui@earthlink.net
Mark Weems
Manoj Biniwale
Aswathi A George
Ewa Zielinska
Colleen G Azen
Manuel Durand
Hisham Abdel-Azim
Children's Hospital of Los Angeles · USHarvard University · USUniversity of Southern California · USLAC+USC Medical Center · US

Funding

LOS ANGELES BASIN CLINICAL AND TRANSLATIONAL SCIENCE INSTITUTEUL1RR031986 · NCRR · UNIVERSITY OF SOUTHERN CALIFORNIA · PI BUCHANAN, THOMAS A · 2010 to 2011
$21.1M
NCRR NIH HHS 1UL1RR031986NCRR NIH HHS UL1 RR031986
6 · The paper itself

Abstract

introductionCirculating endothelial progenitor cells (EPC) are bone marrow derived progenitors that can be mobilized by erythropoietin or in response to tissue injury, and participate in vascular repair. EPC are understudied in human neonates. Whether EPC frequency in newborn infants may be influenced by gestational age or postnatal stress is unknown.

methodsBlood samples were collected on day 1 of life and weekly for 3 weeks from hospitalized neonates for plasma erythropoietin and flow cytometry analysis for CD34+, CD34+CD45-, CD34+VEGFR2+ and CD34+CD45-VEGFR2+ cells (EPC). Associations between CD34+ cell subsets and clinical parameters were studied.

resultsForty five patients were enrolled. An inverse correlation with gestational age was observed for CD34+ and CD34+ VEGFR2+ cell frequencies in whole blood (WB) on day 1 (p<0.05). In preterm infants, CD34+ cell frequency decreased with increased postnatal age (p=0.0001) and CD34+VEGFR2+ cell frequency was higher at week 3 than on day 1 in WB (p=0.0002). On day one, CD34+ and CD34+CD45- cell frequencies in the mononuclear cell fraction (MNC) were higher in preterm than term infants (p=0.035 and p=0.049, respectively) but CD34+CD45-VEGFR2+ cell frequency (median 2.2/million MNC versus 3.8/million MNC) and erythropoietin levels were not significantly different. Transient increases in EPC were observed in five infants with infection. Four preterm infants who developed bronchopulmonary dysplasia had undetectable or low EPC through the first 3 weeks of life.

conclusionsGestational age and postnatal age influenced circulating CD34+ and CD34+VEGFR2+ but not CD34+CD45-VEGFR2+ (EPC) cell frequencies. Circulating EPC in neonates may be influenced by clinical stress.

Indexed as

Gestational AgeAntigens, CD34Case-Control StudiesErythropoietinHemangioblastsHematopoietic Stem CellsHumansInfant, NewbornInfant, PrematureStress, PhysiologicalStress, PsychologicalVascular Endothelial Growth Factor Receptor-2Antigens, CD34ErythropoietinVascular Endothelial Growth Factor Receptor-2

Identifiers

PMID23312395
PMCPMC3633695
OpenAlexW1988811147

What OpenQuestion holds

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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.