Evidence map›Paper›PMID 26132987›Full record

ArticleThe Journal of comparative neurology2016

Synaptic ultrastructure changes in trigeminocervical complex posttrigeminal nerve injury.

John Park, Van Nancy Trinh, Ilse Sears-Kraxberger, Kang-Wu Li, Oswald Steward, Z David Luo

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of comparative neurology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.8field-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

8 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Article
  3. Pathophysiological roles of thrombospondin-4 in disease development.Seminars in cell & developmental biology · 2024
    Review
  4. Article
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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

6 authors at 2 institutions in 1 country.

John ParkDepartment of Pharmacology, University of California Irvine, School of Medicine, Irvine, California, 92697.
Van Nancy TrinhDepartment of Anesthesiology & Perioperative Care, University of California Irvine, School of Medicine, Irvine, California, 92697.
Ilse Sears-KraxbergerReeve-Irvine Research Center, University of California Irvine, School of Medicine, Irvine, California, 92697.
Kang-Wu LiDepartment of Anesthesiology & Perioperative Care, University of California Irvine, School of Medicine, Irvine, California, 92697.
Oswald StewardReeve-Irvine Research Center, University of California Irvine, School of Medicine, Irvine, California, 92697.
Z David LuoDepartment of Pharmacology, University of California Irvine, School of Medicine, Irvine, California, 92697.
University of California, Irvine · USIrvine University · US

Funding

University of California Health Participation in the National COVID Cohort Collaborative (N3C)UL1TR001414 · NCATS · UNIVERSITY OF CALIFORNIA-IRVINE · PI COOPER, DAN M, VILAIN, ERIC J. · 2015 to 2023
$35.1M
A novel pathway mediating the development of chronic orofacial neuropathic painR01DE021847 · NIDCR · UNIVERSITY OF CALIFORNIA-IRVINE · PI LUO, ZHIGANG DAVID, STEWARD, OSWALD · 2011 to 2015
$3.6M
Mechanism of Calcium Channel Cava2d1 Protein Mediated Neuropathic PainR01NS064341 · NINDS · UNIVERSITY OF CALIFORNIA-IRVINE · PI LUO, ZHIGANG DAVID · 2010 to 2013
$1.2M
NCATS NIH HHS UL1 TR001414NIDCR NIH HHS DE021847NIDCR NIH HHS R01 DE021847NINDS NIH HHS NS064341NINDS NIH HHS R01 NS064341
6 · The paper itself

Abstract

Trigeminal nerves collecting sensory information from the orofacial area synapse on second-order neurons in the dorsal horn of subnucleus caudalis and cervical C1/C2 spinal cord (Vc/C2, or trigeminocervical complex), which is critical for sensory information processing. Injury to the trigeminal nerves may cause maladaptive changes in synaptic connectivity that plays an important role in chronic pain development. Here we examined whether injury to the infraorbital nerve, a branch of the trigeminal nerves, led to synaptic ultrastructural changes when the injured animals have developed neuropathic pain states. Transmission electron microscopy was used to examine synaptic profiles in Vc/C2 at 3 weeks postinjury, corresponding to the time of peak behavioral hypersensitivity following chronic constriction injury to the infraorbital nerve (CCI-ION). Using established criteria, synaptic profiles were classified as associated with excitatory (R-), inhibitory (F-), and primary afferent (C-) terminals. Each type was counted within the superficial dorsal horn of the Vc/C2 and the means from each rat were compared between sham and injured animals; synaptic contact length was also measured. The overall analysis indicates that rats with orofacial pain states had increased numbers and decreased mean synaptic length of R-profiles within the Vc/C2 superficial dorsal horn (lamina I) 3 weeks post-CCI-ION. Increases in the number of excitatory synapses in the superficial dorsal horn of Vc/C2 could lead to enhanced activation of nociceptive pathways, contributing to the development of orofacial pain states.

Indexed as

Analysis of VarianceAnimalsDisease Models, AnimalFacial PainFunctional LateralityMaleMicroscopy, ElectronPain MeasurementRatsRats, Sprague-DawleySynapsesTime FactorsTrigeminal Caudal NucleusTrigeminal Nerve Injuriesorofacial neuropathic painRRID:nif-0000-30467RRID:RGD_70508RRID:rid_000081synaptic ultrastructuretrigeminal nerve injury

Identifiers

PMID26132987
PMCPMC4675675
OpenAlexW2113904190

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.