Evidence map›Paper›PMID 24411718›Full record

Trial reportProstaglandins, leukotrienes, and essential fatty acids

Modulation of blood oxylipin levels by long-chain omega-3 fatty acid supplementation in hyper- and normolipidemic men.

Jan Philipp Schuchardt, Simone Schmidt, Gaby Kressel, Ina Willenberg, Bruce D Hammock, Andreas Hahn, Nils Helge Schebb

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Prostaglandins, leukotrienes, and essential fatty acids. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 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

7 authors at 4 institutions in 3 countries.

Jan Philipp SchuchardtInstitute of Food Science and Human Nutrition, Leibniz University Hannover, Germany. Electronic address: Schuchardt@nutrition.uni-hannover.de.
Simone SchmidtInstitute of Food Science and Human Nutrition, Leibniz University Hannover, Germany.
Gaby KresselInstitute of Food Science and Human Nutrition, Leibniz University Hannover, Germany.
Ina WillenbergInstitute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany.
Bruce D HammockDepartment of Entomology and Comprehensive Cancer Center, University of California Davis, CA, USA.
Andreas HahnInstitute of Food Science and Human Nutrition, Leibniz University Hannover, Germany.
Nils Helge SchebbInstitute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany.
Leibniz University Hannover · DEUniversity of California, Davis · USUniversity of Veterinary Medicine Hannover, Foundation · DEUniversity of Veterinary Medicine Vienna · AT

Funding

Workshop on Environmental Technology Transfer and EntrepreneurshipP42ES004699 · NIEHS · UNIVERSITY OF CALIFORNIA DAVIS · PI HAMMOCK, BRUCE D · 1987 to 2021
$50.1M
West Coast Central Comprehensive Metabolomics Resource Core (WC3MRC)U24DK097154 · NIDDK · UNIVERSITY OF CALIFORNIA AT DAVIS · PI FIEHN, OLIVER · 2012 to 2017
$9.9M
HYDROLYTIC ENZYMES IN THE METABOLISM OF TOXINSR01ES002710 · NIEHS · UNIVERSITY OF CALIFORNIA DAVIS · PI HAMMOCK, BRUCE D · 1985 to 2018
$4.0M
NIDDK NIH HHS U24 DK097154NIDDK NIH HHS U24DK097154NIEHS NIH HHS P42 ES004699NIEHS NIH HHS R01 ES002710
6 · The paper itself

Abstract

introductionLong chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA) such as EPA and DHA have been shown to possess beneficial health effects, and it is believed that many of their effects are mediated by their oxygenated products (oxylipins). Recently, we have shown that serum levels of several hydroxy, epoxy, and dihydroxy FAs are dependent on the individual status of the parent FAs in a cohort of normo- and hyperlipidemic subjects. So far, the effect of an increased dietary LC n-3 PUFA intake on hydroxy, epoxy, and dihydroxy FA levels has not been investigated in subjects with mild combined hyperlipidemia. SUBJECTS AND

methodsIn the present study, we compared oxylipin patterns of 10 hyperlipidemic (cholesterol >200mg/dl; triglyceride >150mg/ml) and 10 normolipidemic men in response to twelve weeks of LC n-3 PUFA intake (1.14g DHA and 1.56g EPA). Levels of 44 free hydroxy, epoxy and dihydroxy FAs were analyzed in serum by LC-MS. Additionally, oxylipin levels were compared with their parent PUFA levels in erythrocyte membranes; a biomarker for the individual PUFA status.

resultsDifferences in the oxylipin pattern between normo- and hyperlipidemic subjects were minor before and after treatment. In all subjects, levels of EPA-derived oxylipins (170-4800pM) were considerably elevated after LC n-3 PUFA intake (150-1400%), the increase of DHA-derived oxylipins (360-3900pM) was less pronounced (30-130%). The relative change of EPA in erythrocyte membranes is strongly correlated (r≥0.5; p<0.05) with the relative change of corresponding epoxy and dihydroxy FA serum levels. The effect on arachidonic acid (AA)-derived oxylipin levels (140-27,100pM) was inconsistent. DISCUSSION AND

conclusionsThe dietary LC PUFA composition has a direct influence on the endogenous oxylipin profile, including several highly biological active EPA- and DHA-derived lipid mediators. The shift in oxylipin pattern appears to be dependent on the initial LC PUFA status particularly for EPA. The finding that also levels of other oxylipins derived from ALA, LA or AA are modified by LC n-3 PUFA intake might suggest that at least some of the effects of EPA and DHA could be mediated by a shift in the entire oxylipin profile.

Indexed as

AdultDietary SupplementsEicosapentaenoic AcidErythrocyte MembraneFatty AcidsFatty Acids, Omega-3HumansHyperlipidemiasLipidsMiddle AgedOxylipinsYoung AdultEicosapentaenoic AcidFatty AcidsFatty Acids, Omega-3LipidsOxylipinsArachidonic acidDHADiolsEicosanoidsEPAEpoxidesHyperlipidemiaOmega-3 fatty acidsPUFA

Identifiers

PMID24411718
PMCPMC4130704
OpenAlexW2121573818

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.