Evidence map›Paper›PMID 34752775›Full record

ArticleNeuron2022

Synchronized cluster firing, a distinct form of sensory neuron activation, drives spontaneous pain.

Qin Zheng, Wenrui Xie, Debora D Lückemeyer, Mark Lay, Xue-Wei Wang, Xintong Dong, Nathachit Limjunyawong, Yaqing Ye, Feng-Quan Zhou, Judith A Strong and 2 more

Open access · greenAbstract read
In one paragraph

Article in Neuron, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
9.5field-weighted citation impact, top 1% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 117 citations in OpenAlex.

  1. Artificial intelligence in pediatric pain: a systematic review.BMC medical informatics and decision making · 2026
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  12. International journal of molecular sciences · 2025
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6 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 1 country.

Qin ZhengThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Wenrui XiePain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
Debora D LückemeyerPain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
Mark LayThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Xue-Wei WangDepartment of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Xintong DongThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Nathachit LimjunyawongThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Yaqing YeThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Feng-Quan ZhouDepartment of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA.
Judith A StrongPain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
Jun-Ming ZhangPain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA. Electronic address: jun-ming.zhang@uc.edu.
Xinzhong DongThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA; Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21209, USA. Electronic address: xdong2@jhmi.edu.
Johns Hopkins University · USUniversity of Cincinnati Medical Center · USHoward Hughes Medical Institute · US

Funding

Skeleton and Joint Degeneration with AgingP01AG066603 · NIA · JOHNS HOPKINS UNIVERSITY · PI CRANE, JANET · 2021 to 2025
$9.2M
STUDY OF ACTIVITY-DEPENDENT SYMPATHETIC SPROUTINGR01NS045594 · NINDS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2004 to 2025
$8.6M
Sympathetic-mediated sensory neuron cluster firing as a novel therapeutic target for neuropathic painRF1NS113883 · NINDS · JOHNS HOPKINS UNIVERSITY · PI DONG, XINZHONG, ZHANG, JUN-MING · 2019 to 2019
$3.1M
Reprogramming retinal ganglion cells for optic nerve regeneration and guidanceR01EY027347 · NEI · JOHNS HOPKINS UNIVERSITY · PI CAO, XU · 2017 to 2021
$2.0M
Targeting aging genes and pathways to promote optic nerve regenerationR01EY030883 · NEI · JOHNS HOPKINS UNIVERSITY · PI WAN, MEI · 2020 to 2024
$2.0M
Remodeling of chromatin and transcriptomic landscape to enhance optic nerve regenerationR01EY031779 · NEI · JOHNS HOPKINS UNIVERSITY · PI QIAN, JIANG · 2020 to 2023
$1.7M
Deciphering the Transcriptional Regulatory Network Controlling RGC Axon Growth to Promote RGC Axon Regeneration and Cell Survival after Axonal InjuryK99EY031742 · NEI · JOHNS HOPKINS UNIVERSITY · PI WANG, XUEWEI · 2020 to 2023
$326k
Howard Hughes Medical InstituteNEI NIH HHS K99 EY031742NEI NIH HHS R01 EY027347NEI NIH HHS R01 EY030883NEI NIH HHS R01 EY031779NIA NIH HHS P01 AG066603NINDS NIH HHS R01 NS045594NINDS NIH HHS RF1 NS113883
6 · The paper itself

Abstract

Spontaneous pain refers to pain occurring without external stimuli. It is a primary complaint in chronic pain conditions and remains difficult to treat. Moreover, the mechanisms underlying spontaneous pain remain poorly understood. Here we employed in vivo imaging of dorsal root ganglion (DRG) neurons and discovered a distinct form of abnormal spontaneous activity following peripheral nerve injury: clusters of adjacent DRG neurons firing synchronously and sporadically. The level of cluster firing correlated directly with nerve injury-induced spontaneous pain behaviors. Furthermore, we demonstrated that cluster firing is triggered by activity of sympathetic nerves, which sprout into DRGs after injury, and identified norepinephrine as a key neurotransmitter mediating this unique firing. Chemogenetic and pharmacological manipulations of sympathetic activity and norepinephrine receptors suggest that they are necessary and sufficient for DRG cluster firing and spontaneous pain behavior. Therefore, blocking sympathetically mediated cluster firing may be a new paradigm for treating spontaneous pain.

Indexed as

Ganglia, SpinalSpinal NervesHumansPainSensory Receptor CellsSympathetic Nervous Systemadrenergic receptorscluster firingdorsal root ganglion neuronDRGneuropathic spontaneous painnorepinephrinesympathetic sprouting

Identifiers

PMID34752775
PMCPMC8776619
OpenAlexW3212898831

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.