Evidence map›Paper›PMID 37945351›Full record

ArticleeNeuro2023

Elevated Serotonin in Mouse Spinal Dorsal Horn Is Pronociceptive.

Nathan Cramer, Yadong Ji, Maureen A Kane, Nageswara R Pilli, Alberto Castro, Luca Posa, Gabrielle Van Patten, Radi Masri, Asaf Keller

Open access · goldAbstract read
In one paragraph

Article in eNeuro, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

6 citing papers in PubMed, 7 citations in OpenAlex.

  1. Review
  2. Review
  3. The analgesic paracetamol metabolite AM404 acts peripherally to directly inhibit sodium channels.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Article
  6. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Nathan CramerDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201 ncramer@som.umaryland.edu.ORCID 0000-0001-6146-3664
Yadong JiDepartment of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201.
Maureen A KaneDepartment of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201.
Nageswara R PilliDepartment of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201.
Alberto CastroDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201.
Luca PosaDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201.ORCID 0000-0002-6464-1961
Gabrielle Van PattenDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201.
Radi MasriDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201.ORCID 0000-0001-5893-3979
Asaf KellerDepartment of Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201.ORCID 0000-0001-8727-663X
University of Maryland, Baltimore · US

Funding

Serotonin and Pain ModulationR01NS104297 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI KELLER, ASAF, MASRI, RADI · 2019 to 2023
$2.4M
Parabrachial role in chronic painR01NS099245 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI KELLER, ASAF, MASRI, RADI · 2017 to 2021
$2.2M
Interoception and Pain: Noradrenergic Modulation of Nociceptive Transmission in the Parabrachial NucleusR01NS127827 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI Nathan P Cramer, Radi Masri · 2023 to 2026
$1.8M
Motor Cortex Stimulation Reverses Maladaptive Plasticity Following Spinal InjuryR01NS069568 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI MASRI, RADI · 2010 to 2014
$1.4M
NINDS NIH HHS R01 NS069568NINDS NIH HHS R01 NS099245NINDS NIH HHS R01 NS104297NINDS NIH HHS R01 NS127827
6 · The paper itself

Abstract

Serotonergic neurons in the rostral ventral medulla (RVM) contribute to bidirectional control of pain through modulation of spinal and trigeminal nociceptive networks. Deficits in this pathway are believed to contribute to pathologic pain states, but whether changes in serotonergic mechanisms are pro- or antinociceptive is debated. We used a combination of optogenetics and fiber photometry to examine these mechanisms more closely. We find that optogenetic activation of RVM serotonergic afferents in the spinal cord of naive mice produces mechanical hypersensitivity and conditioned place aversion (CPA). Neuropathic pain, produced by chronic constriction injury of the infraorbital nerve (CCI-ION), evoked a tonic increase in serotonin (5HT) concentrations within the spinal trigeminal nucleus caudalis (SpVc), measured with liquid chromatography-tandem mass spectroscopy (LC-MS/MS). By contract, CCI-ION had no effect on the phasic serotonin transients in SpVc, evoked by noxious pinch, and measured with fiber photometry of a serotonin sensor. These findings suggest that serotonin release in the spinal cord is pronociceptive and that an increase in sustained serotonin signaling, rather than phasic or event driven increases, potentiate nociception in models of chronic pain.

Indexed as

NeuralgiaSerotoninAnimalsChromatography, LiquidHyperalgesiaMiceSpinal CordSpinal Cord Dorsal HornTandem Mass SpectrometrySerotoninfiber photometryinflammationmechanical allodynianeuropathic painrostral ventral medulla

Identifiers

PMID37945351
PMCPMC10698626
OpenAlexW4388521086

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.