Evidence map›Paper›PMID 22129452›Full record

ArticleLipids in health and disease2011

13-hydroxy linoleic acid increases expression of the cholesterol transporters ABCA1, ABCG1 and SR-BI and stimulates apoA-I-dependent cholesterol efflux in RAW264.7 macrophages.

Ines Kämmerer, Robert Ringseis, Ronald Biemann, Gaiping Wen, Klaus Eder

Open access · goldAbstract read
In one paragraph

Article in Lipids in health and disease, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 50 citations in OpenAlex.

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  13. Review
  14. Immunobiology of Atherosclerosis: A Complex Net of Interactions.International journal of molecular sciences · 2019
    Review
  15. Article
  16. Mechanisms of foam cell formation in atherosclerosis.Journal of molecular medicine (Berlin, Germany) · 2017
    Review
  17. Article
  18. Article
  19. Macrophage-mediated cholesterol handling in atherosclerosis.Journal of cellular and molecular medicine · 2016
    Review
  20. 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

5 authors at 1 institution in 1 country.

Ines KämmererInstitute of Animal Nutrition and Nutrition Physiology, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 26-32, 35390 Giessen, Germany.
Robert Ringseis
Ronald Biemann
Gaiping Wen
Klaus Eder
University of Giessen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSynthetic activators of peroxisome proliferator-activated receptors (PPARs) stimulate cholesterol removal from macrophages through PPAR-dependent up-regulation of liver × receptor α (LXRα) and subsequent induction of cholesterol exporters such as ATP-binding cassette transporter A1 (ABCA1) and scavenger receptor class B type 1 (SR-BI). The present study aimed to test the hypothesis that the hydroxylated derivative of linoleic acid (LA), 13-HODE, which is a natural PPAR agonist, has similar effects in RAW264.7 macrophages.

methodsRAW264.7 macrophages were treated without (control) or with LA or 13-HODE in the presence and absence of PPARα or PPARγ antagonists and determined protein levels of LXRα, ABCA1, ABCG1, SR-BI, PPARα and PPARγ and apolipoprotein A-I mediated lipid efflux.

resultsTreatment of RAW264.7 cells with 13-HODE increased PPAR-transactivation activity and protein concentrations of LXRα, ABCA1, ABCG1 and SR-BI when compared to control treatment (P < 0.05). In addition, 13-HODE enhanced cholesterol concentration in the medium but decreased cellular cholesterol concentration during incubation of cells with the extracellular lipid acceptor apolipoprotein A-I (P < 0.05). Pre-treatment of cells with a selective PPARα or PPARγ antagonist completely abolished the effects of 13-HODE on cholesterol efflux and protein levels of genes investigated. In contrast to 13-HODE, LA had no effect on either of these parameters compared to control cells.

conclusion13-HODE induces cholesterol efflux from macrophages via the PPAR-LXRα-ABCA1/SR-BI-pathway.

Indexed as

AnimalsApolipoprotein A-IATP Binding Cassette Transporter 1ATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 1BiomarkersCell LineCholesterolGene ExpressionLinoleic AcidsLipoproteinsLiver X ReceptorsMacrophagesMiceOrphan Nuclear ReceptorsOxazoles13-hydroxy-9,11-octadecadienoic acidABCG1 protein, mouseApolipoprotein A-IATP Binding Cassette Transporter 1ATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 1BiomarkersCholesterolGW 6471Linoleic AcidsLipoproteinsLiver X ReceptorsNr1h3 protein, mouseOrphan Nuclear ReceptorsOxazolesPeroxisome Proliferator-Activated ReceptorsScarb1 protein, mouseScavenger Receptors, Class BTyrosine

Identifiers

PMID22129452
PMCPMC3248880
OpenAlexW2164375966

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.