Evidence map›Paper›PMID 34348746›Full record

ArticleChinese medicine2021

Two methoxy derivatives of resveratrol, 3,3',4,5'-tetramethoxy-trans-stilbene and 3,4',5-trimethoxy-trans-stilbene, suppress lipopolysaccharide-induced inflammation through inactivation of MAPK and NF-κB pathways in RAW 264.7 cells.

Chunxiu Zhou, Xutao Zhang, Cheng-Chao Ruan, Wai San Cheang

Open access · goldAbstract read
In one paragraph

Article in Chinese medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed, 22 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. 3,4',5-Trimethoxy-Antioxidants (Basel, Switzerland) · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Review
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 2 countries.

Chunxiu ZhouState Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Room 5008a, Building N22, Avenida da Universidade, Taipa, Macao, SAR, China.
Xutao ZhangState Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Room 5008a, Building N22, Avenida da Universidade, Taipa, Macao, SAR, China.
Cheng-Chao RuanDepartment of Physiology and Pathophysiology, School of Basic Medical Sciences, Shanghai Key Laboratory of Bioactive Small Molecules, Fudan University, Shanghai, China.
Wai San CheangState Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Room 5008a, Building N22, Avenida da Universidade, Taipa, Macao, SAR, China. AnnaCheang@um.edu.mo.ORCID http://orcid.org/0000-0002-1152-7997
University of Macau · MOFudan University · CN

Funding

Operation Fund of State Key Laboratory of Quality Research in Chinese Medicine of University of Macau SKL-QRCM(UM)-2020-2022Research Committee of the University of Macau MYRG2019-00157-ICMSResearch Committee of the University of Macau SRG2019-00154-ICMS
6 · The paper itself

Abstract

background3,3',4,5'-tetramethoxy-trans-stilbene (3,3',4,5'-TMS) and 3,4',5-trimethoxy-trans-stilbene (3,4',5-TMS) are two methoxy derivatives of resveratrol. Previous researches have proved that resveratrol and its analogues have anti-inflammatory effect through suppressing mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) signaling pathways. This study aims to study whether 3,3',4,5'-TMS and 3,4',5-TMS alleviate inflammation and the underlying mechanism.

methodsRAW 264.7 macrophage cells were treated with lipopolysaccharide (LPS) to induce inflammation and pretreated with 3,3',4,5'-TMS or 3,4',5-TMS. Cell viability was measured with the 3-(4,5)-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Nitric oxide (NO) release was detected by Griess reagent. The secretions of pro-inflammatory cytokines were assessed by ELISA kits. Protein expressions of signaling molecules were determined by Western blotting. Reactive oxygen species (ROS) production was detected by fluorescence staining and malondialdehyde (MDA) assay.

results3,3',4,5'-TMS and 3,4',5-TMS suppressed LPS-induced NO release and pro-inflammatory cytokines (IL-6 and TNF-α) secretions in a dose-dependent manner in RAW 264.7 cells. 3,3',4,5'-TMS and 3,4',5-TMS significantly down-regulated the LPS-induced expressions of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS), and partially suppressed the activation of MAPK (phosphorylation of p38, JNK, ERK), and NF-κB (phosphorylation of IKKα/β, p65 and IκBα) signaling pathways; where phosphorylation of ERK and p65 was mildly but not significantly decreased by 3,3',4,5'-TMS. LPS-induced NF-κB/p65 nuclear translocation was inhibited by both 3,3',4,5'-TMS and 3,4',5-TMS. Moreover, both resveratrol derivatives decreased the ROS levels.

conclusions3,3',4,5'-TMS and 3,4',5-TMS significantly suppress LPS-induced inflammation in RAW 264.7 cells through inhibition of MAPK and NF-κB signaling pathways and also provide anti-oxidative effect. This study reveals potential therapeutic applications of 3,3',4,5'-TMS and 3,4',5-TMS for inflammatory diseases.

Indexed as

3,3′,4,5′-tetramethoxy-trans-stilbene3,4′,5-trimethoxy-trans-stilbeneInflammationLipopolysaccharideMAPKNF-κB

Identifiers

PMID34348746
PMCPMC8335869
OpenAlexW3187891242

What OpenQuestion holds

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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.