Evidence map›Paper›PMID 21822944›Full record

ArticleLipids2011

Eicosapentaenoic acid and docosahexaenoic acid regulate modified LDL uptake and macropinocytosis in human macrophages.

James E McLaren, Daryn R Michael, Irina A Guschina, John L Harwood, Dipak P Ramji

Abstract read
PubMed Publisher
In one paragraph

Article in Lipids, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 13% 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

16 citing papers in PubMed, 34 citations in OpenAlex.

  1. Trial
  2. Article
  3. Unexpected omega-3 activities in intracellular lipolysis and macrophage foaming revealed by fluorescence lifetime imaging.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Article
  5. Article
  6. Review
  7. Dihomo-γ-linolenic acid inhibits several key cellular processes associated with atherosclerosis.Biochimica et biophysica acta. Molecular basis of disease · 2019
    Article
  8. Nutraceutical therapies for atherosclerosis.Nature reviews. Cardiology · 2016
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. 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.

James E McLarenCardiff School of Biosciences, Cardiff University, Museum Avenue, Cardiff, CF10 3AX, UK. mclarenje@cf.ac.uk
Daryn R Michael
Irina A Guschina
John L Harwood
Dipak P Ramji
Cardiff University · GB

Funding

British Heart Foundation PG/07/03/22716British Heart Foundation PG/08/073/25520
6 · The paper itself

Abstract

There is evidence that long chain n-3 PUFA (such as from fish oils) provide atheroprotection through, in part, changes in macrophage function although it has not been fully determined whether these n-3 PUFA target cellular mechanisms that control macrophage foam cell formation. Therefore, we investigated whether the n-3 PUFA, EPA and DHA, modulate modified low-density lipoprotein (LDL) uptake by human macrophages. The uptake of fluorophore labeled acetylated LDL (AcLDL) and/or oxidized LDL (OxLDL) by THP-1 macrophages and primary human monocyte-derived macrophages were measured by flow cytometry following co-incubation with EPA or DHA in vitro. DHA inhibited both AcLDL and OxLDL uptake in human macrophages whilst EPA reduced AcLDL and increased OxLDL uptake. These effects were only partly explained by changes in the mRNA and protein expression of key scavenger receptors, such as CD36 and scavenger receptor-A, in these cells suggesting the involvement of a scavenger receptor-independent mechanism. EPA and DHA inhibited macropinocytosis, as measured by Lucifer Yellow uptake, in human macrophages and attenuated the expression of Syndecan-4, which has been implicated in the uptake of other modified forms of LDL. EPA and DHA reduced modified LDL uptake by human macrophages through a mechanism that is in part scavenger receptor-independent and may involve inhibition of macropinocytosis and Syndecan-4 expression. This suggests that both EPA and DHA are capable of regulating macrophage foam cell formation and adds to the evidence describing an atheroprotective role for n-3 PUFA, implicating them as potential therapeutic agents for the treatment of clinical atherosclerosis.

Indexed as

CD36 AntigensCell LineDocosahexaenoic AcidsEicosapentaenoic AcidGene ExpressionHumansLipoproteins, LDLMacrophagesPinocytosisScavenger Receptors, Class ASyndecan-4CD36 AntigensDocosahexaenoic AcidsEicosapentaenoic AcidLipoproteins, LDLScavenger Receptors, Class ASDC4 protein, humanSyndecan-4

Identifiers

PMID21822944
OpenAlexW2053626407

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.