Evidence map›Paper›PMID 26186294›Full record

ArticlePediatric research2015

Attenuated innate immune defenses in very premature neonates during the neonatal period.

Elizabeth A Marchant, Bernard Kan, Ashish A Sharma, Alice van Zanten, Tobias R Kollmann, Rollin Brant, Pascal M Lavoie

Open access · bronzeAbstract read
In one paragraph

Article in Pediatric research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 2% 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

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Myeloid TLR2 signaling amplifies immunopathology in influenza-infected murine neonates.American journal of respiratory cell and molecular biology · 2026
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  7. Journal of clinical medicine · 2026
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  12. Perturbation of the Preterm Human Immune System in Early Life.medRxiv : the preprint server for health sciences · 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

7 authors at 2 institutions in 1 country.

Elizabeth A MarchantChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Bernard KanChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Ashish A SharmaChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Alice van ZantenDepartment of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada.
Tobias R KollmannChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Rollin BrantChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Pascal M LavoieChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada.
Child and Family Research Institute · CAChildren's & Women's Health Centre of British Columbia · CA

Funding

CIHR 110938-1CIHR ONL002278712
6 · The paper itself

Abstract

backgroundAntimicrobial responses have been shown to be profoundly attenuated in very preterm neonates when examined on cord blood. However, we lack data on these responses at the time these neonates are most vulnerable to infections.

methodsMultiple cytokine responses to two prototypic Toll-like receptor (TLR) agonists: lipopolysaccharide (LPS) (TLR4) and R848 (TLR7/8) were prospectively measured in preterm neonates born ≤30 wk of gestation (n = 50) during the first 28 d of age using whole blood and single-cell multiparameter flow cytometry assays. Results were compared to term neonates (n = 30) and adult controls (n = 25).

resultsIn preterm neonates, LPS and R848 responses remained attenuated in both cord blood and in the first 28 d of age. These responses showed significant maturation over time after adjusting for gestational age and were confirmed in monocytes and dendritic cells on a per-cell basis. We detected no major contribution of chorioamnionitis, maternal antenatal corticosteroids or magnesium sulfate treatment, labor, or mode of delivery to the maturation of cytokine responses.

conclusionInnate immune antimicrobial defenses are profoundly attenuated developmentally in very preterm neonates during the neonatal period, suggesting that exogenous factors drive the sustained systemic inflammation that has been linked to increased morbidities in these infants.

Indexed as

Immunity, InnateAdultCase-Control StudiesCytokinesDendritic CellsFemaleFetal BloodFlow CytometryGestational AgeHumansImidazolesInfant, NewbornInfant, PrematureLipopolysaccharidesMaleMonocytesCytokinesImidazolesLipopolysaccharidesresiquimodTLR4 protein, humanTLR7 protein, humanTLR8 protein, humanToll-Like Receptor 4Toll-Like Receptor 7Toll-Like Receptor 8

Identifiers

PMID26186294
PMCPMC5059157
OpenAlexW2258696547

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.