Evidence map›Paper›PMID 29696511›Full record

ArticleMolecular neurobiology2019

TNFα in the Trigeminal Nociceptive System Is Critical for Temporomandibular Joint Pain.

Qian Bai, Sufang Liu, Hui Shu, Yuanyuan Tang, Sanjeeth George, Tieli Dong, Brian L Schmidt, Feng Tao

Open access · greenAbstract read
In one paragraph

Article in Molecular neurobiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

32 citing papers in PubMed, 42 citations in OpenAlex.

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  19. Molecules (Basel, Switzerland) · 2022
    Review
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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

8 authors at 6 institutions in 2 countries.

Qian BaiDepartment of Anesthesiology, The Second Affiliated Hospital at Zhengzhou University School of Medicine, 2 Jingba Rd, Zhengzhou, 450000, Henan, China.
Sufang LiuDepartment of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA.
Hui ShuDepartment of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA.
Yuanyuan TangDepartment of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA.
Sanjeeth GeorgeDepartment of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA.
Tieli DongDepartment of Anesthesiology, The Second Affiliated Hospital at Zhengzhou University School of Medicine, 2 Jingba Rd, Zhengzhou, 450000, Henan, China. tlddtl@126.com.
Brian L SchmidtBluestone Center for Clinical Research, New York University, New York, NY, USA.
Feng TaoDepartment of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas, USA. tao@tamhsc.edu.ORCID http://orcid.org/0000-0002-0623-6298
Second Affiliated Hospital of Zhengzhou University · CNTexas A&M University · USCenter for Clinical Research (United States) · USTexas A&M University System · USXinxiang Medical University · CNZhengzhou University · CN

Funding

Gender differences in stress-induced pain transition after surgeryR01DE022880 · NIDCR · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI TAO, FENG · 2012 to 2016
$2.0M
A new animal model for stress-induced transition from acute to chronic painK02DE023551 · NIDCR · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI TAO, FENG · 2014 to 2018
$564k
NIDCR NIH HHS K02 DE023551NIDCR NIH HHS R01 DE022880
6 · The paper itself

Abstract

Previous studies have shown that tumor necrosis factor alpha (TNFα) is significantly increased in complete Freund's adjuvant (CFA)-treated temporomandibular joint (TMJ) tissues. However, it is unclear whether TNFα in the trigeminal nociceptive system contributes to the development of TMJ pain. In the present study, we investigated the role of TNFα in trigeminal ganglia (TG) and spinal trigeminal nucleus caudalis (Sp5C) in CFA-induced inflammatory TMJ pain. Intra-TMJ injection of CFA (10 μl, 5 mg/ml) induced inflammatory pain in the trigeminal nerve V2- and V3-innervated skin areas of WT mice, which was present on day 1 after CFA and persisted for at least 10 days. TNFα in both TG and Sp5C of WT mice was upregulated after CFA injection. The CFA-induced TMJ pain was significantly inhibited in TNFα KO mice. The immunofluorescence staining showed that intra-TMJ CFA injection not only enhanced co-localization of TNFα with Iba1 (a marker for microglia) in both TG and Sp5C but also markedly increased the expression of TNFα in the Sp5C neurons. By the methylated DNA immunoprecipitation assay, we also found that DNA methylation at the TNF gene promoter region in the TG was dramatically diminished after CFA injection, indicating that epigenetic regulation may be involved in the CFA-enhanced TNFα expression in our model. Our results suggest that TNFα in the trigeminal nociceptive system plays a critical role in CFA-induced inflammatory TMJ pain.

Indexed as

AnimalsBase SequenceDNA MethylationFreund's AdjuvantGene DeletionMaleMice, Inbred C57BLMice, KnockoutPainPromoter Regions, GeneticReceptors, Tumor Necrosis Factor, Type ITemporomandibular JointTrigeminal GanglionTumor Necrosis Factor-alphaUp-RegulationFreund's AdjuvantReceptors, Tumor Necrosis Factor, Type ITumor Necrosis Factor-alphaInflammatory painSpinal trigeminal nucleus caudalisTemporomandibular jointTrigeminal gangliaTumor necrosis factor-α

Identifiers

PMID29696511
PMCPMC6698364
OpenAlexW2801899575

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.