Evidence map›Paper›PMID 21521651›Full record

ArticleBrain, behavior, and immunity2011

Neuronal Fc-gamma receptor I mediated excitatory effects of IgG immune complex on rat dorsal root ganglion neurons.

Lintao Qu, Pu Zhang, Robert H LaMotte, Chao Ma

Open access · greenAbstract read
In one paragraph

Article in Brain, behavior, and immunity, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

50 citing papers in PubMed, 77 citations in OpenAlex.

  1. TRPM2 is a direct pain transducer.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  9. Pain Hypersensitivity in SLURP1 and SLURP2 Knock-out Mouse Models of Hereditary Palmoplantar Keratoderma.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
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  20. The Neuroimmunology of Chronic Pain: From Rodents to Humans.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Review
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

4 authors at 1 institution in 1 country.

Lintao QuDepartment of Anesthesiology, Yale University School of Medicine, New Haven, CT 06510, USA.
Pu Zhang
Robert H LaMotte
Chao Ma
Yale University · US

Funding

Peripheral Neural Mechanisms of Inflammatory Itch and PainR01NS014624 · NINDS · YALE UNIVERSITY · PI LA MOTTE, ROBERT H · 1985 to 2016
$7.2M
Antigen-specific immune mechanisms of neuronal hyperexcitability and chronic painR21NS065091 · NINDS · YALE UNIVERSITY · PI MA, CHAO · 2009 to 2010
$396k
NINDS NIH HHS NS014624NINDS NIH HHS NS065091NINDS NIH HHS R01 NS014624NINDS NIH HHS R21 NS065091
6 · The paper itself

Abstract

Pain often accompanies antigen-specific immune-related disorders though little is known of the underlying neural mechanisms. A common feature among these disorders is the elevated level of antigen-specific immunoglobulin (Ig) G in the serum and the presence of IgG immune complex (IC) in the affected tissue. We hypothesize that IC may directly activate the Fc-gamma receptor type I (FcγRI) expressed in nociceptive dorsal root ganglion (DRG) neurons and increase neuronal excitability thus potentially contributing to pain. Immunofluorescent labeling indicated that FcγRI, but not FcγRIIB or FcγRIII, was expressed in a subpopulation of rat DRG neurons including those expressing nociceptive markers. Calcium imaging revealed that the IC, but neither of the antibody (IgG) or antigen alone, produced an increase in intracellular calcium. This effect was abolished by the removal of the IgG Fc portion in the IC or the application of an anti-FcγRI antibody, suggesting a key role of the FcγRI receptor. Removal of extracellular calcium or depletion of intracellular calcium stores prevented the IC-induced calcium response. In whole-cell current-clamp recordings, IC depolarized the resting membrane potential, decreased the rheobase, and increased the number of action potentials evoked by a depolarizing current at 2× rheobase. In about half of the responsive neurons, IC evoked action potential discharges. These results suggest that a subpopulation of nociceptive neurons expresses functional FcγRI and that the activation of this receptor by IC increases neuronal excitability.

Indexed as

Action PotentialsAnimalsAntigen-Antibody ComplexCalciumCells, CulturedFemaleGanglia, SpinalImmunoglobulin GNeuronsRatsRats, Sprague-DawleyReceptors, IgGAntigen-Antibody ComplexCalciumImmunoglobulin GReceptors, IgG

Identifiers

PMID21521651
PMCPMC3150223
OpenAlexW1995924485

What OpenQuestion holds

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Registered trials

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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.