Evidence map›Paper›PMID 21034485›Full record

ArticleRespiratory research2010

Inhibitors of inflammation and endogenous surfactant pool size as modulators of lung injury with initiation of ventilation in preterm sheep.

Noah H Hillman, Suhas G Kallapur, J Jane Pillow, Ilias Nitsos, Graeme R Polglase, Machiko Ikegami, Alan H Jobe

Open access · goldAbstract readComparative Study
In one paragraph

Article in Respiratory research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Preterm lung and brain responses to mechanical ventilation and corticosteroids.Journal of perinatology : official journal of the California Perinatal Association · 2023
    Review
  3. Article
  4. Article
  5. Article
  6. Surfactant plus budesonide decreases lung and systemic inflammation in mechanically ventilated preterm sheep.American journal of physiology. Lung cellular and molecular physiology · 2019
    Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Sustained inflation at birth did not protect preterm fetal sheep from lung injury.American journal of physiology. Lung cellular and molecular physiology · 2013
    Article
  15. Interleukin-1 receptor antagonist prevents murine bronchopulmonary dysplasia induced by perinatal inflammation and hyperoxia.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  16. Article
  17. Article
  18. Review
  19. Positive end-expiratory pressure and surfactant decrease lung injury during initiation of ventilation in fetal sheep.American journal of physiology. Lung cellular and molecular physiology · 2011
    Article
  20. Inflammation and lung maturation from stretch injury in preterm fetal sheep.American journal of physiology. Lung cellular and molecular physiology · 2011
    Article
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 2 countries.

Noah H HillmanCincinnati Children's Hospital Medical Center, Division of Pulmonary Biology, Cincinnati, OH 45236, USA. Noah.Hillman@cchmc.org
Suhas G Kallapur
J Jane Pillow
Ilias Nitsos
Graeme R Polglase
Machiko Ikegami
Alan H Jobe
University of Western Australia · AUCincinnati Children's Hospital Medical Center · US

Funding

Neonatal Resuscitation and Preterm Lung InjuryR01HD012714 · NICHD · LOS ANGELES COUNTY HARBOR-UCLA MED CTR · PI JOBE, ALAN H · 1985 to 2010
$2.8M
Lung Injury with Resuscitation of the PretermK08HL097085 · NHLBI · SAINT LOUIS UNIVERSITY · PI HILLMAN, NOAH H · 2009 to 2013
$644k
NHLBI NIH HHS K08HL097085NICHD NIH HHS HD-12714
6 · The paper itself

Abstract

backgroundIncreased pro-inflammatory cytokines in tracheal aspirates correlate with the development of BPD in preterm infants. Ventilation of preterm lambs increases pro-inflammatory cytokines and causes lung inflammation.

objectiveWe tested the hypothesis that selective inhibitors of pro-inflammatory signaling would decrease lung inflammation induced by ventilation in preterm newborn lambs. We also examined if the variability in injury response was explained by variations in the endogenous surfactant pool size.

methodsDate-mated preterm lambs (n = 28) were operatively delivered and mechanically ventilated to cause lung injury (tidal volume escalation to 15 mL/kg by 15 min at age). The lambs then were ventilated with 8 mL/kg tidal volume for 1 h 45 min. Groups of animals randomly received specific inhibitors for IL-8, IL-1, or NF-κB. Unventilated lambs (n = 7) were the controls. Bronchoalveolar lavage fluid (BALF) and lung samples were used to quantify inflammation. Saturated phosphatidylcholine (Sat PC) was measured in BALF fluid and the data were stratified based on a level of 5 μmol/kg (~8 mg/kg surfactant).

resultsThe inhibitors did not decrease the cytokine levels or inflammatory response. The inflammation increased as Sat PC pool size in BALF decreased. Ventilated lambs with a Sat PC level > 5 μmol/kg had significantly decreased markers of injury and lung inflammation compared with those lambs with < 5 μmol/kg.

conclusionLung injury caused by high tidal volumes at birth were decreased when endogenous surfactant pool sizes were larger. Attempts to decrease inflammation by blocking IL-8, IL-1 or NF-κB were unsuccessful.

Indexed as

Age FactorsAnimalsAnimals, NewbornAnti-Inflammatory Agents, Non-SteroidalFemaleInflammation MediatorsLung InjuryNicotinic AcidsPregnancyPulmonary SurfactantsRandom AllocationRespiration, ArtificialSheepAnti-Inflammatory Agents, Non-SteroidalInflammation MediatorsnicotinanilideNicotinic AcidsPulmonary Surfactants

Identifiers

PMID21034485
PMCPMC2978154
OpenAlexW2170144059

What OpenQuestion holds

Textmetadata
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.