Evidence map›Paper›PMID 34038447›Full record

ArticlePloS one2021

Ethyl ferulate contributes to the inhibition of the inflammatory responses in murine RAW 264.7 macrophage cells and acute lung injury in mice.

Yu Wang, Xuan Zhang, Linger Li, Zhao Zhang, Chengxi Wei, Guohua Gong

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 23 citations in OpenAlex.

  1. Anti-inflammatory effect ofJournal of animal science and technology · 2026
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  8. Chemical Constituents ofMolecules (Basel, Switzerland) · 2023
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Yu WangInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.
Xuan ZhangInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.
Linger LiInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.
Zhao ZhangInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.
Chengxi WeiInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.
Guohua GongInner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China.ORCID 0000-0003-1650-1267
Inner Mongolia University for Nationalities · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEthyl ferulate (EF) is a derivative of ferulic acid (FA), which is a monomeric component purified from the traditional medicinal herb Ferula, but its effects have not been clear yet. The purpose of this study was to evaluate whether EF can reduce inflammation levels in macrophages by regulating the Nrf2-HO-1 and NF-кB pathway.

methodsThe LPS-induced raw 264.7 macrophage cells model was used to determine the anti-inflammatory and anti-oxidative stress effects of EF. The levels of IL-1β, IL-6, TNF-α and PGE2 were analyzed by ELISA. The mRNA and protein of COX-2, iNOS, TNF-α, IL-6, HO-1 and Nrf2 were identified by RT-PCR analysis and western blotting. Intracellular ROS levels were assessed with DCFH oxidation staining. The expressions of NF-кB p-p65 and Nrf2 were analyzed by immunofluorescence assay. The inhibitory effect of Nrf2 inhibitor ML385 (2μM) on mediatation of antioxidant activity by raw 264.7 macrophage cells was evaluated. The effect of EF was confirmed in acute lung injury mice model.

resultsIn our research, EF reduced the expression of iNOS, COX2 and the production of PGE2. EF could inhibit the production of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) in lipopolysaccharide (LPS) stimulated macrophages and decreased expression of IL-6 and TNF-α in LPS stimulated macrophages. Furthermore, EF inhibited NF-кB p65 from transporting to the nucleus, decreased the expression of p-IкBα, significantly decreased the level of intracellular reactive oxygen species (ROS) and activated Nrf2/HO-1 pathways. EF could attenuate the degree of leukocyte infiltration, reduced MPO activity, mRNA levels and secretion of TNF-α and IL-6 in vivo. EF exhibited potent protective effects against LPS-induced acute lung injury in mice.

conclusionsCollectively, our data showed that EF relieved LPS-induced inflammatory responses by inhibiting NF-κB pathway and activating Nrf2/HO-1 pathway, known to be involved in the regulation of inflammatory responses by Nrf2.

Indexed as

Acute Lung InjuryAnimalsCaffeic AcidsCyclooxygenase 2DinoprostoneHeme Oxygenase-1InflammationLipopolysaccharidesMacrophagesMembrane ProteinsMiceMonokinesNF-E2-Related Factor 2RAW 264.7 CellsReactive Oxygen SpeciesSignal TransductionCaffeic AcidsCyclooxygenase 2Dinoprostoneethyl ferulateHeme Oxygenase-1Hmox1 protein, mouseLipopolysaccharidesMembrane ProteinsMonokinesNfe2l2 protein, mouseNF-E2-Related Factor 2Ptgs2 protein, mouseReactive Oxygen SpeciesRela protein, mouseTranscription Factor RelA

Identifiers

PMID34038447
PMCPMC8153479
OpenAlexW3164599827

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.