Evidence map›Paper›PMID 18336468›Full record

ArticleCell proliferation2008

Platelet-activating factor stimulates ovine foetal pulmonary vascular smooth muscle cell proliferation: role of nuclear factor-kappa B and cyclin-dependent kinases.

B O Ibe, M F Abdallah, A M Portugal, J U Raj

Open access · bronzeAbstract read
In one paragraph

Article in Cell proliferation, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

11 citing papers in PubMed, 28 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

4 authors at 2 institutions in 1 country.

B O IbeDivision of Neonatology, Harbor-UCLA Medical Center, Los Angeles Biomedical Institute, Harbor-UCLA Medical Center, 1124 West Carson Street, Torrance, CA 90502, USA. ibe@labiomed.org
M F Abdallah
A M Portugal
J U Raj
Harbor–UCLA Medical Center · USUCLA Medical Center · US

Funding

PAF and Hypoxia-Induced Pulmonary HypertensionR01HL077819 · NHLBI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI RAJ, J. USHA · 2004 to 2007
$1.4M
NHLBI NIH HHS HL-077819
6 · The paper itself

Abstract

objectivePlatelet-activating factor (PAF) is implicated in pathogenesis of persistent pulmonary hypertension of the neonate (PPHN); PAF is a mitogen for lung fibroblasts. PAF's role in pulmonary vascular smooth muscle cell (PVSMC) proliferation and in hypoxia-induced pulmonary vein (PV) remodelling has not been established and mechanisms for PAF's cell-proliferative effects are not well understood. We investigated involvement of PAF and PAF receptors in PVSMC proliferation. MATERIALS AND

methodsCells from pulmonary arteries (SMC-PA) and veins (SMC-PV) were serum starved for 72 h in 5% CO2 in air (normoxia). They were cultured for 24 h more in normoxia or 2% O(2) (hypoxia) in 0.1% or 10% foetal bovine serum with 5 microCi/well of [(3)H]-thymidine, with and without 10 nm PAF. Nuclear factor-kappa B (NF-kappaB), CDK2 and CDK4 protein expression, and their roles in cell proliferation control were studied.

resultsPAF and hypoxia increased SMC-PA and SMC-PV proliferation. WEB2170 inhibited PAF-induced cell proliferation while lyso-PAF had no effect. SMC-PV proliferated more than SMC-PA and PAF plus hypoxia augmented NF-kappaB protein expression. NF-kappaB inhibitory peptide attenuated PAF-induced cell proliferation by 50% and PAF increased CDK2 and CDK4 protein expression. The data show that hypoxia and PAF up-regulate PVSMC proliferation via PAF receptor-specific pathway involving NF-kappaB, CDK2 and CDK4 activations.

conclusionThey suggest that in vivo, in foetal lung low-oxygen environment, where PAF level is high, proliferation of PVSMC will occur readily to modulate PV development and that failure of down-regulation of PAF effects postnatally may result in PPHN.

Indexed as

AnimalsAzepinesCell ProliferationCells, CulturedCyclin-Dependent KinasesDose-Response Relationship, DrugFemaleFlavonoidsHypoxiaMitogen-Activated Protein KinasesMuscle, Smooth, VascularNF-kappa BOxygenPlatelet Activating FactorPulmonary ArteryPulmonary Veins2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-oneAzepinesbepafantCyclin-Dependent KinasesFlavonoidsMitogen-Activated Protein KinasesNF-kappa BOxygenPlatelet Activating FactorTriazoles

Identifiers

PMID18336468
PMCPMC6496610
OpenAlexW2128046631

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.