Evidence map›Paper›PMID 21061393›Full record

Trial reportAnnals of neurology2010

Capsaicin induces degeneration of cutaneous autonomic nerve fibers.

Christopher H Gibbons, Ningshan Wang, Roy Freeman

Registry-linked trialOpen access · greenAbstract readClinical Trial
In one paragraph

Trial report in Annals of neurology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04262778 (Diagnostic Accuracy of Electrochemical Skin Conductance Measurement in Paediatric Small Fibre Neuropathy Following Neurotoxic Chemotherapy), which is not on this map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 9% 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.

NCT04262778 completednot on this mapstarted 2020, after this paper: background citation

Diagnostic Accuracy of Electrochemical Skin Conductance Measurement in Paediatric Small Fibre Neuropathy Following Neurotoxic Chemotherapy

TypeobservationalSponsorAssistance Publique - Hôpitaux de ParisRan2020 to 2023Enrolled55ConditionsChemotherapy-induced Peripheral NeuropathyArmselectrochemical skin conductance measurement
3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 79 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Laser Doppler imaging in the detection of peripheral neuropathy.Autonomic neuroscience : basic & clinical · 2013
    Trial
  5. Trial
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. [Neuropathic pruritus].Schmerz (Berlin, Germany) · 2020
    Article
  14. Stability, permeation, and cytotoxicity reduction of capsicum extract nanoparticles loaded hydrogel containing wax gourd extract.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2020
    Article
  15. Assessment of cutaneous axon-reflex responses to evaluate functional integrity of autonomic small nerve fibers.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2020
    Review
  16. Article
  17. Review
  18. Effect of diabetes type on long-term outcome of epidermal axon regeneration.Annals of clinical and translational neurology · 2019
    Article
  19. Article
  20. The Goosebump Sign.Journal of hand and microsurgery · 2019
    Article
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

3 authors at 1 institution in 1 country.

Christopher H GibbonsDepartment of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
Ningshan Wang
Roy Freeman
Harvard University · US

Funding

Structure & Function in Diabetic Small Fiber NeuropathyK23NS050209 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI GIBBONS, CHRISTOPHER H · 2008 to 2012
$853k
NINDS NIH HHS K23 NS050209
6 · The paper itself

Abstract

objectiveTo determine the effects of topical application of capsaicin on cutaneous autonomic nerves.

methodsThirty-two healthy subjects underwent occlusive application of 0.1% capsaicin cream (or placebo) for 48 hours. Subjects were followed for 6 months with serial assessments of sudomotor, vasomotor, pilomotor, and sensory function with simultaneous assessment of innervation through skin biopsies.

resultsThere were reductions in sudomotor, vasomotor, pilomotor, and sensory function in capsaicin-treated subjects (p < 0.01 vs. placebo). Sensory function declined more rapidly than autonomic function, reaching a nadir by Day 6, whereas autonomic function reached a nadir by Day 16. There were reductions in sudomotor, vasomotor, pilomotor, and sensory nerve fiber densities in capsaicin-treated subjects (p < 0.01 vs. placebo). Intraepidermal nerve fiber density declined maximally by 6 days, whereas autonomic nerve fiber densities reached maximal degeneration by Day 16. Conversely, autonomic nerves generally regenerated more rapidly than sensory nerves, requiring 40-50 days to return to baseline levels, whereas sensory fibers required 140-150 days to return to baseline.

interpretationTopical capsaicin leads to degeneration of sudomotor, vasomotor, and pilomotor nerves accompanied by impairment of sudomotor, vasomotor, and pilomotor function. These results suggest the susceptibility and/or pathophysiologic mechanisms of nerve damage may differ between autonomic and sensory nerve fibers treated with capsaicin and enhances the capsaicin model for the study of disease-modifying agents. The data suggest caution should be taken when topical capsaicin is applied to skin surfaces at risk for ulceration, particularly in neuropathic conditions characterized by sensory and autonomic impairment.

Indexed as

Nerve DegenerationAdministration, TopicalAdultAutonomic PathwaysCapsaicinFemaleHumansLaser-Doppler FlowmetryMaleMiddle AgedReflexSensationSensory System AgentsSkinVasodilationYoung AdultCapsaicinSensory System Agents

Identifiers

PMID21061393
PMCPMC3057686
OpenAlexW1964860289

What OpenQuestion holds

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Registered trials

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.