Evidence map›Paper›PMID 30680297›Full record

ArticleJournal of dentistry (Shiraz, Iran)2018

Quercetin Decreases Th17 Production by Down-Regulation of MAPK- TLR4 Signaling Pathway on T Cells in Dental Pulpitis.

Ali Mahmoud Hashemi, Shiva Solahaye Kahnamouii, Hassan Aghajani, Khalil Frozannia, Alireza Pournasrollah, Rasoul Sadegh, Heidarali Esmaeeli, Yosef Ghadimi, Ebrahim Razmpa

Open access · greenAbstract read
In one paragraph

Article in Journal of dentistry (Shiraz, Iran), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 27% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Bioactive components and clinical potential ofFrontiers in pharmacology · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Polyphenols in Dental Applications.Bioengineering (Basel, Switzerland) · 2020
    Review
  15. Review
  16. Article
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

9 authors at 2 institutions in 1 country.

Ali Mahmoud HashemiDental Implant Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Shiva Solahaye KahnamouiiDept. of Oral and Maxillofacial Surgery, Tehran University of Medical Sciences, Tehran, Iran.
Hassan AghajaniDept. of Cardiology, Tehran University of Medical Sciences, Tehran, Iran.
Khalil FrozanniaDept. of Cardiology, Tehran University of Medical Sciences, Tehran, Iran.
Alireza PournasrollahTabriz University of Medical Sciences, Tabriz, Iran.
Rasoul SadeghTabriz University of Medical Sciences, Tabriz, Iran.
Heidarali EsmaeeliDept. of Pathology, Tabriz University of Medical Sciences, Tabriz, Iran.
Yosef GhadimiDept. of Pathology, Tabriz University of Medical Sciences, Tabriz, Iran.
Ebrahim RazmpaDept. of Otolaryngology, Tehran University of Medical Sciences, Tehran, Iran.
Tehran University of Medical Sciences · IRTabriz University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

statement of the problemQuercetin is a pharmacological flavonoid that can inhibit high mobility group box1 (HMGB1) protein, a non-histone nuclear protein that is implicated in inflammation. Th17 cells are important cells in the pathogenesis of inflammation. Pulpitis is the inflammation of dental pulp, which usually is accompanied by pain. Quercetin may alleviate this inflammation. PURPOSE: The current study aimed to compare blocking of HMGB1 function and stimulation of HMGB1 function with quercetin and investigate the effects of the blockage on T helper 17 (Th17) cells and mitogen-activated protein kinase Toll-like receptor 4 (MAPK-TLR4) signaling pathway. MATERIALS AND

methodT cells isolated from the pulp involved with pulpitis and the normal pulp were cultured. The cells suspensions were plated in 6-wells culture plates and stimulated with 0.5 µg/ml of HMGB1 for 2, 4, 8, and 12 hours. For blocking TLR4, 10 µg/ml rabbit anti-human TLR4 antibody was added 1 hour before treatment with HMGB1.

resultsThe level of these cytokines decreased; moreover, western blot data showed that quercetin could decrease MAPK signaling pathway by means of inhibition of HMGB1 on T cells. The results showed the reduction of TLR4 pathway and Th17 cell polarization.

conclusionOur results indicated that the levels of IL-17, IL-33, and IL-6 in supernatants from patients' cultured T cells were increased after stimulation with HMGB-1 following employing quercetin. It also could inhibit MAPK signaling pathway, which subsequently could decrease Th17 production and IL-17. Quercetin could decrease pro-inflammatory cytokines and IL-17 production.

Indexed as

Protein kinasePulpitisQuercetinT-LymphocytesToll-Like Receptor 4

Identifiers

PMID30680297
PMCPMC6338691
OpenAlexW2902656562

What OpenQuestion holds

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LicenceCC BY-NC-SA
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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.