Evidence map›Paper›PMID 29209900›Full record

ArticleJournal of molecular neuroscience : MN2018

Effect of Testosterone on TRPV1 Expression in a Model of Orofacial Myositis Pain in the Rat.

Xiaofeng Bai, Xia Zhang, Qing Zhou

Abstract read
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In one paragraph

Article in Journal of molecular neuroscience : MN, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.9field-weighted citation impact, top 24% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

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  14. Review
  15. Steroids and TRP Channels: A Close Relationship.International journal of molecular sciences · 2020
    Review
  16. Sex differences and mechanisms of muscle pain.Current opinion in physiology · 2019
    Article
  17. Review
  18. Article
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

Xiaofeng BaiDepartment of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, China Medical University, 117 North Nanjing Street, Shenyang, 110002, People's Republic of China.
Xia ZhangDepartment of Anesthesiology, School & Hospital of Stomatology, China Medical University, 117 North Nanjing Street, Shenyang, 110002, People's Republic of China. zhangxiamd@126.com.ORCID http://orcid.org/0000-0002-7996-4843
Qing ZhouDepartment of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, China Medical University, 117 North Nanjing Street, Shenyang, 110002, People's Republic of China.
China Medical University · CN

Funding

Technology Foundation for Selected Overseas Chinese Scholar, Ministry of Personnel of China [2014]240the National Natural Science Foundation of China 81400530the Natural Science Foundation of Liaoning Province 201602811
6 · The paper itself

Abstract

Recent clinical studies have revealed sex differences in response to transient receptor potential vanilloid 1 (TRPV1) agonist-induced pain. However, the mechanism of these differences in TRPV1-related chronic pain remains unclear. In the present study, we investigate the effects of inflammation and gonadal hormones on TRPV1 expression in trigeminal ganglia. Inflammatory pain was modeled by injecting complete Freund's adjuvant (CFA) into the left masseter muscle in rats. TRPV1 mRNA and protein levels in the trigeminal ganglia of male and female rats following CFA injection were assessed. CFA-induced changes in TRPV1 mRNA and protein expression in the trigeminal ganglia from orchidectomized (ODX) male rats and testosterone-replaced ODX rats were examined. Additionally, TRPV1 mRNA levels in the trigeminal ganglia from ovariectomized (OVX) female and ODX male rats treated with tamoxifen were assessed. We found that the levels of TRPV1 mRNA and protein in the trigeminal ganglia from female rats following CFA injection were significantly higher than in the ganglia from naïve female rats. CFA-induced inflammatory hyperalgesia did not alter TRPV1 expression in the trigeminal ganglia from male rats. The TRPV1 mRNA and protein expression levels in the ODX male trigeminal ganglia were significantly upregulated on day 3 following the initiation of inflammation. However, CFA-induced inflammatory pain had no significant effect on TRPV1 mRNA or protein expression in testosterone-replaced ODX rats. Furthermore, tamoxifen was unable to inhibit the upregulation of TRPV1 expression in OVX female and ODX male rats after CFA injection. In summary, these data indicate that gender differences in TRPV1 function may be, in part, mediated by sex-dependent TRPV1 expression in sensory ganglia. Testosterone plays a key role in the inhibition of TRPV1 expression in this rat chronic inflammatory pain model.

Indexed as

AnimalsEstrogen AntagonistsFacial PainFemaleMaleMyositisRatsRats, Sprague-DawleySex FactorsTamoxifenTestosteroneTrigeminal GanglionTRPV Cation ChannelsUp-RegulationEstrogen AntagonistsTamoxifenTestosteroneTrpv1 protein, ratTRPV Cation ChannelsChronic painComplete Freund’s adjuvantTestosteroneTransient receptor potential vanilloid 1Trigeminal ganglia

Identifiers

PMID29209900
OpenAlexW2774877356

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.