Evidence map›Paper›PMID 25861792›Full record

ArticleJournal of lipid research2015

Apolipoprotein A-I mimetic peptide 4F blocks sphingomyelinase-induced LDL aggregation.

Su Duy Nguyen, Matti Javanainen, Sami Rissanen, Hongxia Zhao, Jenni Huusko, Annukka M Kivelä, Seppo Ylä-Herttuala, Mohamad Navab, Alan M Fogelman, Ilpo Vattulainen and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

15 citing papers in PubMed, 27 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

12 authors at 7 institutions in 3 countries.

Su Duy NguyenWihuri Research Institute, Biomedicum Helsinki, Helsinki, Finland.
Matti JavanainenDepartment of Physics, Tampere University of Technology, Tampere, Finland.
Sami RissanenDepartment of Physics, Tampere University of Technology, Tampere, Finland.
Hongxia ZhaoInstitute of Biotechnology, University of Helsinki, Helsinki, Finland.
Jenni HuuskoA.I. Virtanen Institute for Molecular Sciences, Department of Biotechnology and Molecular Medicine, University of Eastern Finland, Kuopio, Finland.
Annukka M KiveläA.I. Virtanen Institute for Molecular Sciences, Department of Biotechnology and Molecular Medicine, University of Eastern Finland, Kuopio, Finland.
Seppo Ylä-HerttualaA.I. Virtanen Institute for Molecular Sciences, Department of Biotechnology and Molecular Medicine, University of Eastern Finland, Kuopio, Finland Science Service Center, Kuopio University Hospital, Kuopio, Finland.
Mohamad NavabDivision of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA.
Alan M FogelmanDivision of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA.
Ilpo VattulainenDepartment of Physics, Tampere University of Technology, Tampere, Finland MEMPHYS-Center for Biomembrane Physics, University of Southern Denmark, Odense, Denmark.
Petri T KovanenWihuri Research Institute, Biomedicum Helsinki, Helsinki, Finland.
Katariina ÖörniWihuri Research Institute, Biomedicum Helsinki, Helsinki, Finland.
Wihuri Research Institute · FITampere University · FIUniversity of California, Los Angeles · USUniversity of Eastern Finland · FIKuopio University Hospital · FIUniversity of Helsinki · FIUniversity of Southern Denmark · DK

Funding

ULTRASTRUCTURE OF THE INTIMA IN EARLY LESION FORMATIONP01HL030568 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FOGELMAN, ALAN M · 1985 to 2019
$55.2M
NHLBI NIH HHS P01 HL030568
6 · The paper itself

Abstract

Lipolytic modification of LDL particles by SMase generates LDL aggregates with a strong affinity for human arterial proteoglycans and may so enhance LDL retention in the arterial wall. Here, we evaluated the effects of apoA-I mimetic peptide 4F on structural and functional properties of the SMase-modified LDL particles. LDL particles with and without 4F were incubated with SMase, after which their aggregation, structure, and proteoglycan binding were analyzed. At a molar ratio of L-4F to apoB-100 of 2.5 to 20:1, 4F dose-dependently inhibited SMase-induced LDL aggregation. At a molar ratio of 20:1, SMase-induced aggregation was fully blocked. Binding of 4F to LDL particles inhibited SMase-induced hydrolysis of LDL by 10% and prevented SMase-induced LDL aggregation. In addition, the binding of the SMase-modified LDL particles to human aortic proteoglycans was dose-dependently inhibited by pretreating LDL with 4F. The 4F stabilized apoB-100 conformation and inhibited SMase-induced conformational changes of apoB-100. Molecular dynamic simulations showed that upon binding to protein-free LDL surface, 4F locally alters membrane order and fluidity and induces structural changes to the lipid layer. Collectively, 4F stabilizes LDL particles by preventing the SMase-induced conformational changes in apoB-100 and so blocks SMase-induced LDL aggregation and the resulting increase in LDL retention.

Indexed as

AortaApolipoprotein A-IApolipoprotein B-100BiomimeticsHumansLipolysisLipoproteins, LDLPeptidesSphingomyelin PhosphodiesteraseApolipoprotein A-Iapolipoprotein A-I mimetic peptide 4FApolipoprotein B-100Lipoproteins, LDLPeptidesSphingomyelin Phosphodiesteraseapolipoprotein B-100atherosclerosisconformationinteractionlow density lipoproteinproteoglycansretention

Identifiers

PMID25861792
PMCPMC4442877
OpenAlexW2140979303

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.