Evidence map›Paper›PMID 25415555›Full record

ArticleSoft matter2015

Low levels of lipid oxidation radically increase the passive permeability of lipid bilayers.

Kristina A Runas, Noah Malmstadt

Open access · greenAbstract read
In one paragraph

Article in Soft matter, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

51 citing papers in PubMed, 149 citations in OpenAlex.

  1. Article
  2. Review
  3. A Fluorogenic Hydrazino-Pictet-Spengler Reaction in Live Cells.Angewandte Chemie (International ed. in English) · 2025
    Article
  4. Article
  5. Review
  6. For Better or Worse: The Impact of Necrotic Cell Death Modalities.Advances in experimental medicine and biology · 2025
    Review
  7. Article
  8. Iron-Induced Lipid Oxidation Alters Membrane Mechanics Favoring Permeabilization.Langmuir : the ACS journal of surfaces and colloids · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Lipid-derived electrophiles inhibit the function of membrane channels during ferroptosis.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. 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

2 authors at 2 institutions in 1 country.

Kristina A RunasMork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA. malmstad@usc.edu.
Noah Malmstadt
Southern California University for Professional Studies · USUniversity of Southern California · US

Funding

Connecting plasma membrane function to lipid structure and organization with asymR01GM093279 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI MALMSTADT, NOAH · 2010 to 2014
$1.4M
NIGMS NIH HHS 1R01GM093279NIGMS NIH HHS R01 GM093279
6 · The paper itself

Abstract

Oxidation of unsaturated lipids in cellular membranes has been shown to cause severe membrane damage and potentially cell death. The presence of oxidized lipid species in the membrane is known to cause changes in membrane properties, such as decreased fluidity. This study uses giant unilamellar vesicles (GUVs) to measure passive transport across membranes containing defined concentrations of oxidized lipid species. GUVs consisting of a saturated phospholipid, an unsaturated phospholipid, and cholesterol were used as model membranes. By replacing defined amounts of the unsaturated lipid with a corresponding oxidized product, the oxidation process could be mimicked, yielding vesicles of varying oxidized lipid concentration. Oxidized lipid concentration was varied from 0 mol% to 18 mol% of the total lipid concentration. Passive transport of PEG12-NBD, an uncharged fluorescent molecule, was measured using a microfluidic trap to capture the GUVs and spinning disk confocal microscopy (SDCM) to track the transport of a fluorescent species in the equatorial plane of each GUV. Membrane permeability was determined by fitting the resulting concentration profiles to a finite difference model of diffusion and permeation around and through the membrane. Experiments showed three permeability regimes. Without oxidation, transport was slow, with a measured permeability on the order of 1.5 × 10(-6) cm s(-1). At 2.5-10% oxidized species permeation was fast (1.5 × 10(-5) cm s(-1)). Above 12.5% oxidized species, the bilayer was disrupted by the formation of pore defects. As passive transport is an important mechanism for drug delivery, understanding the relationship between oxidation and permeation could provide insight into the pharmaceutical characteristics of tissues with oxidative damage.

Indexed as

DiffusionLipid BilayersOxidation-ReductionOxygenPermeabilityPhospholipidsUnilamellar LiposomesLipid BilayersOxygenPhospholipidsUnilamellar Liposomes

Identifiers

PMID25415555
PMCPMC4477792
OpenAlexW2060688826

What OpenQuestion holds

Textmetadata
LicenceTDM
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.