Evidence map›Paper›PMID 31157834›Full record

ArticleInvestigative ophthalmology & visual science2019

Remodeling of Substance P Sensory Nerves and Transient Receptor Potential Melastatin 8 (TRPM8) Cold Receptors After Corneal Experimental Surgery.

Jiucheng He, Thang Luong Pham, Azucena H Kakazu, Haydee E P Bazan

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 6% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
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  7. Review
  8. Aprepitant Restores Corneal Sensitivity and Reduces Pain in DED.Translational vision science & technology · 2024
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  11. Review
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  14. Elucidating the structure and functions of Resolvin D6 isomers on nerve regeneration with a distinctive trigeminal transcriptome.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
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  19. Sensory neurons directly promote angiogenesis in response to inflammation via substance P signaling.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Jiucheng HeNeuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, Louisiana, United States.
Thang Luong PhamNeuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, Louisiana, United States.
Azucena H KakazuNeuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, Louisiana, United States.
Haydee E P BazanNeuroscience Center of Excellence, School of Medicine, Louisiana State University Health New Orleans, New Orleans, Louisiana, United States.
Louisiana State University Health Sciences Center New Orleans · US

Funding

Lipid Mediators in Corneal Nerve RegenerationR01EY019465 · NEI · LSU HEALTH SCIENCES CENTER · PI BAZAN, HAYDEE E.P. · 2009 to 2021
$4.0M
NEI NIH HHS R01 EY019465
6 · The paper itself

Abstract

Purpose: To investigate changes in corneal nerves positive to substance P (SP) and transient receptor potential melastatin 8 (TRPM8) and gene expression in the trigeminal ganglia (TG) following corneal surgery to unveil peripheral nerve mechanism of induced dry eye-like pain (DELP). Methods: Surgery was performed on mice by removing the central epithelial and anterior stromal nerves. Mice were euthanized at different times up to 15 weeks. Immunostaining was performed with TRPM8, SP, or protein gene product 9.5 (PGP9.5) antibodies, and epithelial nerve densities were calculated. The origin of TRPM8- and SP-TG neurons were analyzed by retrograde tracing. Gene expression in TG was studied by real-time PCR analysis. Results: SP-positive epithelial corneal nerves were more abundant than TRPM8 and were expressed in different TG neurons. After injury, epithelial nerve regeneration occurs in two distinct stages. An early regeneration of the remaining epithelial bundles reached the highest density on day 3 and then rapidly degraded. From day 5, the epithelial nerves originated from the underlying stromal nerves were still lower than normal levels by week 15. The SP- and TRPM8-positive nerve fibers followed the same pattern as the total nerves. TRPM8-positive terminals increased slowly and reached only half of normal values by 3 months. Corneal sensitivity gradually increased and reached normal values on day 12. Corneal injury also induced significant changes in TG gene expression, decreasing trpm8 and tac1 genes. Conclusions: Abnormal SP expression, low amounts of TRPM8 terminals, and hypersensitive nerve response occur long after the injury and changes in gene expression in the TG suggest a contribution to the pathogenesis of corneal surgery-induced DELP.

Indexed as

AnimalsCold TemperatureCorneal InjuriesEpithelium, CornealFemaleFluorescent Antibody Technique, IndirectGene Expression RegulationMaleMiceModels, AnimalNerve RegenerationNeuronal PlasticityOphthalmic NerveReal-Time Polymerase Chain ReactionSubstance PTearsSubstance PTRPM8 protein, mouseTRPM Cation ChannelsUbiquitin ThiolesteraseUchl1 protein, mouse

Identifiers

PMID31157834
PMCPMC6545819
OpenAlexW2948255072

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.