Evidence map›Paper›PMID 31489459›Full record

ArticleInflammation research : official journal of the European Histamine Research Society ... [et al.]2019

Tannic acid prevents macrophage-induced pro-fibrotic response in lung epithelial cells via suppressing TLR4-mediated macrophage polarization.

Ayyanar Sivanantham, Dhamotharan Pattarayan, Nandhine Rajasekar, Adithi Kannan, Lakshmanan Loganathan, Ramalingam Bethunaickan, Santanu Kar Mahapatra, Rajaguru Palanichamy, Karthikeyan Muthusamy, Subbiah Rajasekaran

Abstract read
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In one paragraph

Article in Inflammation research : official journal of the European Histamine Research Society ... [et al.], 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.2field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
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  4. Review
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  8. Himalayan flora: targeting various molecular pathways in lung cancer.Medical oncology (Northwood, London, England) · 2023
    Review
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  11. Article
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  17. 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

10 authors at 4 institutions in 1 country.

Ayyanar SivananthamDepartment of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu, India.
Dhamotharan PattarayanDepartment of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu, India.
Nandhine RajasekarDepartment of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu, India.
Adithi KannanCentre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed To Be University, Thanjavur, Tamil Nadu, India.
Lakshmanan LoganathanPharmacogenomics and CADD Lab, Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu, India.
Ramalingam BethunaickanDepartment of Immunology, ICMR-National Institute for Research in Tuberculosis, Chennai, Tamil Nadu, India.
Santanu Kar MahapatraCentre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed To Be University, Thanjavur, Tamil Nadu, India.
Rajaguru PalanichamyDepartment of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu, India.
Karthikeyan MuthusamyPharmacogenomics and CADD Lab, Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu, India.
Subbiah RajasekaranDepartment of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu, India. rajasekarphd@gmail.com.ORCID http://orcid.org/0000-0003-2303-3246
Anna University, Chennai · INAlagappa University · INSASTRA University · INNational Institute of Research in Tuberculosis · IN

Funding

Department of Biotechnology , Ministry of Science and Technology BT/RLF/Re-entry/36/2013Department of Science and Technology, Ministry of Science and Technology YSS/2014/000125
6 · The paper itself

Abstract

backgroundPolarized macrophages induce fibrosis through multiple mechanisms, including a process termed epithelial-to-mesenchymal transition (EMT). Mesenchymal cells contribute to the excessive accumulation of fibrous connective tissues, leading to organ failure. This study was aimed to investigate the effect of tannic acid (TA), a natural dietary polyphenol on M1 macrophage-induced EMT and its underlying mechanisms. MATERIALS: First, we induced M1 polarization in macrophage cell lines (RAW 264.7 and THP-1). Then, the conditioned-medium (CM) from these polarized macrophages was used to induce EMT in the human adenocarcinomic alveolar epithelial (A549) cells. We also analysed the role of TA on macrophage polarization.

resultsWe found that TA pre-treated CM did not induce EMT in epithelial cells. Further, TA pre-treated CM showed diminished activation of MAPK in epithelial cells. Subsequently, TA was shown to inhibit LPS-induced M1 polarization in macrophages by directly targeting toll-like receptor 4 (TLR4), thereby repressing LPS binding to TLR4/MD2 complex and subsequent signal transduction.

conclusionIt was concluded that TA prevented M1 macrophage-induced EMT by suppressing the macrophage polarization possibly through inhibiting the formation of LPS-TLR4/MD2 complex and blockage of subsequent downstream signal activation. Further, our findings may provide beneficial information to develop new therapeutic strategies against chronic inflammatory diseases.

Indexed as

A549 CellsAnimalsAnti-Inflammatory AgentsEpithelial-Mesenchymal TransitionFibrosisHumansLipopolysaccharidesLungMacrophage ActivationMiceRAW 264.7 CellsTanninsTHP-1 CellsToll-Like Receptor 4Anti-Inflammatory AgentsLipopolysaccharidesTanninsToll-Like Receptor 4EMTLPSM1 macrophagesMesenchymal cellsTannic acidTLR4

Identifiers

PMID31489459
OpenAlexW2971414942

What OpenQuestion holds

Textmetadata
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.