Evidence map›Paper›PMID 16373680›Full record

ArticleJournal of dental research2006

Trigeminal nociceptors express TLR-4 and CD14: a mechanism for pain due to infection.

R Wadachi, K M Hargreaves

Open access · greenAbstract read
In one paragraph

Article in Journal of dental research, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 102 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed, 1 pooled it
6.5field-weighted citation impact, top 3% 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

102 citing papers in PubMed, 1 synthesis or guideline pooled it, 236 citations in OpenAlex.

  1. Pooled it
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  12. Acupuncture for radicular pain: a review of analgesic mechanism.Frontiers in molecular neuroscience · 2024
    Review
  13. Lipopolysaccharide-Induced TRPA1 Upregulation in Trigeminal Neurons is Dependent on TLR4 and Vesicular Exocytosis.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  14. Review
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42 more citing papers are in PubMed but not listed here.

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

2 authors at 2 institutions in 2 countries.

R WadachiDepartment of Endodontics, UTHSCSA, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.
K M Hargreaves
Audie L. Murphy Memorial VA Hospital · USTokyo Medical and Dental University · JP

Funding

SYMPATHETIC FIBER MODULATION OF NEUROGENIC INFLAMMATIONR37DE012888 · NIDCR · UNIVERSITY OF TEXAS HLTH SCI CTR SAN ANT · PI HARGREAVES, KENNETH M · 1999 to 2003
$938k
NIDCR NIH HHS R37 DE012888NIDCR NIH HHS R37 DE12888
6 · The paper itself

Abstract

Although certain bacterial species appear to be risk factors for pain due to odontogenic infections, comparatively little is known about the potential mechanisms mediating this effect. In this study, we tested the hypothesis that trigeminal nociceptive neurons express the TLR4 or CD14 receptors, thus enabling sensory neurons to detect and respond to tissue levels of bacterial substances such as lipopolysaccharide (LPS). Immunohistochemical analyses of human and rat trigeminal neurons demonstrated that a capsaicin-sensitive subclass of nociceptors (defined by expression of TRPV1, a capsaicin receptor) expresses both TLR4 and CD14. Moreover, human dental pulp collected from patients with caries lesions demonstrated co-localization of TLR4 and CD14, with markers of peripheral sensory neurons. Collectively, these studies indicate that the capsaicin-sensitive subclass of trigeminal nociceptors expresses TLR4 and CD14. These results indicate that pain due to bacterial infections may result, in part, from direct activation of nociceptors by bacterial products such as LPS.

Indexed as

AgedAnimalsBacterial InfectionsCadaverDental PulpFemaleHumansImmunohistochemistryLipopolysaccharide ReceptorsMaleModels, AnimalNeurons, AfferentNociceptorsPainPulpitisRatsLipopolysaccharide ReceptorsToll-Like Receptor 4TRPV1 protein, humanTRPV Cation Channels

Identifiers

PMID16373680
PMCPMC2227946
OpenAlexW1982170042

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.