Evidence map›Paper›PMID 35910174›Full record

ArticleACS omega2022

Free Radical Chain Reactions and Polyunsaturated Fatty Acids in Brain Lipids.

Sharon C W Ng, Ran Furman, Paul H Axelsen, Mikhail S Shchepinov

Open access · goldAbstract read
In one paragraph

Article in ACS omega, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.2field-weighted citation impact, top 3% 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

21 citing papers in PubMed, 45 citations in OpenAlex.

  1. PROTACs in cancer therapy: targeted degradation of GPX4, PARP and epigenetic regulators.Journal of enzyme inhibition and medicinal chemistry · 2026
    Review
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  3. Membrane Stress and Ferroptosis: Lipid Dynamics in Cancer.International journal of molecular sciences · 2026
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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.

Sharon C W NgDepartment of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6084, United States.
Ran FurmanDepartment of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6084, United States.
Paul H AxelsenDepartment of Pharmacology, 1009C Stellar Chance Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6084, United States.ORCID https://orcid.org/0000-0002-7118-1641
Mikhail S ShchepinovRetrotope Inc., Los Altos, California 94022, United States.
University of Pennsylvania · USRetrotope (United States) · US

Funding

Posttranslational Protein Modification in Alzheimer PathologyRF1AG057197 · NIA · UNIVERSITY OF PENNSYLVANIA · PI AXELSEN, PAUL H · 2018 to 2018
$2.0M
NIA NIH HHS RF1 AG057197
6 · The paper itself

Abstract

Polyunsaturated fatty acyl chains (PUFAs) concentrate in the brain and give rise to numerous oxidative chemical degradation products. It is widely assumed that these products are the result of free radical chain reactions, and reactions of this type have been demonstrated in preparations where a single PUFA substrate species predominates. However, it is unclear whether such reactions can occur in the biologically complex milieu of lipid membranes where PUFA substrates are a minority species, and where diverse free radical scavengers or other quenching mechanisms are present. It is of particular interest to know whether they occur in brain, where PUFAs are concentrated and where PUFA oxidation products have been implicated in the pathogenesis of neurodegenerative disorders. To ascertain whether free radical chain reactions can occur in a complex brain lipid mixture, mouse brain lipids were extracted, formed into vesicles, and treated with a fixed number of hydroxyl radicals under conditions wherein the concentrations and types of PUFA-containing phospholipids were varied. Specific phospholipid species in the mixture were assayed by tandem mass spectrometry to quantify the oxidative losses of endogenous PUFA-containing phospholipids. Results reveal crosstalk between the oxidative degradation of ω3 and ω6 PUFAs that can only be explained by the occurrence of free radical chain reactions. These results demonstrate that PUFAs in a complex brain lipid mixture can participate in free radical chain reactions wherein the extent of oxidative degradation is not limited by the number of reactive oxygen species available to initiate such reactions. These reactions may help explain otherwise puzzling in vivo interactions between ω3 and ω6 PUFAs in mouse brain.

Identifiers

PMID35910174
PMCPMC9330197
OpenAlexW4285395477

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.