Evidence map›Paper›PMID 18650342›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2008

A role for polymodal C-fiber afferents in nonhistaminergic itch.

Lisa M Johanek, Richard A Meyer, Robert M Friedman, Kenneth W Greenquist, Beom Shim, Jasenka Borzan, Tim Hartke, Robert H LaMotte, Matthias Ringkamp

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed
16.0field-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

90 citing papers in PubMed, 189 citations in OpenAlex.

  1. Trial
  2. Cathepsin S elicits itch and signals via protease-activated receptors.The Journal of investigative dermatology · 2010
    Trial
  3. Trial
  4. Review
  5. Itching, Ionic Channels, Immune System, Magnesium and Antioxidants.Clinical, cosmetic and investigational dermatology · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Physiology and Pathophysiology of Itch.Physiological reviews · 2020
    Review
  18. Article
  19. The Challenge of Basic Itch Research.Acta dermato-venereologica · 2020
    Review
  20. Electrically Evoked Itch in Human Subjects.Frontiers in medicine · 2020
    Review

30 more citing papers are in PubMed but not listed here.

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

9 authors at 3 institutions in 1 country.

Lisa M JohanekDepartment of Neurosurgery, Johns Hopkins University, Baltimore, Maryland 21287, USA.
Richard A Meyer
Robert M Friedman
Kenneth W Greenquist
Beom Shim
Jasenka Borzan
Tim Hartke
Robert H LaMotte
Matthias Ringkamp
Johns Hopkins University · USYale University · USJohns Hopkins University Applied Physics Laboratory · US

Funding

Research Project CoreP01NS047399 · NINDS · YALE UNIVERSITY · PI LA MOTTE, ROBERT H · 2004 to 2013
$11.0M
NINDS NIH HHS P01 NS047399NINDS NIH HHS P01 NS 47399
6 · The paper itself

Abstract

Recent psychophysical and electrophysiological studies in humans suggest the existence of two peripheral pathways for itch, one that is responsive to histamine and a second pathway that can be activated by nonhistaminergic pruritogens (e.g., cowhage spicules). To explore the peripheral neuronal pathway for nonhistaminergic itch, behavioral responses and neuronal activity in unmyelinated afferent fibers were assessed in monkey after topical application of cowhage spicules or intradermal injection of histamine and capsaicin. Cowhage and histamine, but not capsaicin, evoked scratching behavior indicating the presence of itch. In single-fiber recordings, cowhage, histamine and/or capsaicin were applied to the cutaneous receptive field of 43 mechano-heat-sensitive C-fiber (CMH) nociceptors. The majority of CMHs exhibited a prolonged response to cowhage (39 of 43) or histamine (29 of 38), but not to capsaicin (3 of 34). Seven CMHs were activated by cowhage but not histamine. The average response to cowhage was more than twice the response to histamine, and responses were not correlated. The response of the CMHs to a stepped heat stimulus (49 degrees C, 3 s) was either quickly adapting (QC) or slowly adapting (SC). In contrast, the cowhage response was characterized by bursts of two or more action potentials (at approximately 1 Hz). The total cowhage response of the QC fibers (97 action potentials/5 min) was twice that of the SC fibers (49 action potentials/5 min). A subset of QC fibers exhibited high-frequency intraburst discharges ( approximately 30 Hz). These results suggest multiple mechanisms by which CMHs may encode itch to cowhage as well as pain to mechanical and heat stimuli.

Indexed as

CapsaicinHistamineAfferent PathwaysAnimalsBehavior, AnimalDose-Response Relationship, DrugInjections, IntradermalMacaca fascicularisNerve Fibers, UnmyelinatedNeural ConductionNociceptorsPain MeasurementPhysical StimulationPruritusReaction TimeSensory ThresholdsCapsaicinHistamine

Identifiers

PMID18650342
PMCPMC2564794
OpenAlexW2024903090

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.