Cited by 161Pain Mechanisms and TreatmentsCancer Treatment and PharmacologyIon Channels and Receptors

Changes in sensory processing in the spinal dorsal horn accompany vincristine-induced hyperalgesia and allodynia

Weng, -R H., Cordella, V J., Dougherty, M P.·2003·Pain

Abstract

Abnormal sensation and pain are major dose-limiting factors in cancer chemotherapy with vincristine. In this study, we have adapted a model of this condition by using repeated daily intraperitoneal injections of vincristine in rats. Mechanical allodynia and hyperalgesia without change in responses to thermal stimuli were first observed following 5-8 days of vincristine treatment (0.1mg/kg/day) and then persisted throughout the remainder of the treatment interval (2-3 weeks). Electrophysiological recording from wide dynamic range (WDR) neurons in the lumbar (L4-L5) spinal dorsal horn in hyperalgesic rats demonstrated significantly increased spontaneous activity and after-discharges to noxious mechanical stimuli (von Frey filaments with a bending force greater than 58.02mN, skin compression 1.3 and 3N, 1mm(2)), increased acute A- and C-fiber responses, after-discharges and abnormal 'wind-up' to electrical stimuli (5mA, 2ms) at 0.1Hz applied across the receptive field. These results suggest a state of central sensitization develops in spinal WDR neurons with repeated vincristine treatment that contributes to the spontaneous pain and hyperalgesia seen in patients and the hyperresponsiveness to sensory stimuli seen in animals treated with vincristine.

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Registry

Crossref · 10.1016/s0304-3959(02)00445-1

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Authors
Weng, R. H., Cordella, V. J., & Dougherty, M. P.
Affiliations
The University of Texas MD Anderson Cancer Center (US)
Venue
Pain
Published
2003-05
Volume
103
Issue
1
Pages
131-138
ISSN
0304-3959 (ISSN-L)
OpenAlex
W1607354731
Cited by
161
References
28
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2023: 2 · 2022: 3 · 2021: 15 · 2020: 9 · 2019: 2 · 2018: 11 · 2017: 5 · 2016: 10 · 2015: 10 · 2014: 11 · 2013: 12 · 2012: 5
FWCI
5.14
Type
journal article
Language
en
Open access
closed
Locations
  • Pain (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01NS039933, NS39933)
Topics
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
Keywords
vincristine, mechanical allodynia, dorsal horn, wide dynamic range neurons, central sensitization, afterdischarge, wind-up, spontaneous pain, cancer pain
MeSH terms
Action Potentials, Afferent Pathways, Analysis of Variance, Animals, Behavior, Animal, Drug Administration Schedule, Electric Stimulation, Electrophysiology, Hyperalgesia, Male, Pain, Pain Measurement, Physical Stimulation, Reaction Time, Time Factors, Vincristine, Case-Control Studies, Rats, Sprague-Dawley, Posterior Horn Cells, Rats

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