Evidence map›Paper›PMID 10353438›Full record

ArticlePsychopharmacology1999

Local administration of delta9-tetrahydrocannabinol attenuates capsaicin-induced thermal nociception in rhesus monkeys: a peripheral cannabinoid action.

M C Ko, J H Woods

Open access · bronzeAbstract read
In one paragraph

Article in Psychopharmacology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 58 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Cannabinoids in the management of difficult to treat pain.Therapeutics and clinical risk management · 2008
    Article
  9. Article
  10. Review
  11. Article
  12. Differential effects of CB1 and opioid agonists on two populations of adult rat dorsal root ganglion neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2004
    Article
  13. 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

2 authors at 1 institution in 1 country.

M C KoDepartment of Pharmacology, University of Michigan, Medical School, Ann Arbor 48109-0632, USA. mko@umich.edu
J H Woods
University of Michigan–Ann Arbor · US

Funding

Selective radiolabeled agonists /antagonists for opiate receptor subtypesP50DA000254 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JOHANSON, CHRIS-ELLYN · 1985 to 2002
$5.0M
Narcotic Drug and Opioid Peptide Basic Research projectP01DA000254 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WOODS, JAMES H · 2003 to 2006
$5.0M
COGNITIVE INTERVENTION FOR DRUG ABUSING ADOLESCENTSK21DA000254 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LATIMER, WILLIAM W · 1995 to 1999
–
NIDA NIH HHS DA00254NIDA NIH HHS K21 DA000254NIDA NIH HHS P01 DA000254NIDA NIH HHS P50 DA000254
6 · The paper itself

Abstract

rationaleCannabinoids can reduce nociceptive responses by acting on peripheral cannabinoid receptors in rodents.

objectivesThe study was conducted to evaluate the hypothesis that local administration of delta9-tetrahydrocannabinol (delta9-THC) can attenuate capsaicin-induced nociception in rhesus monkeys.

methodsCapsaicin (100 microg) was applied locally in the tail of rhesus monkeys to evoke a nociceptive response, thermal allodynia, in normally innocuous 46 degrees C water. delta9-THC (10-320 microg) was coadministered with capsaicin in the tail to assess local antinociceptive effects. In addition, a local antagonism study was performed to confirm the selectivity of delta9-THC action.

resultsdelta9-THC dose-dependently inhibited capsaicin-induced allodynia. This local antinociception was antagonized by small doses (10-100 microg) of the cannabinoid CB1 antagonist, SR141716A, applied in the tail. However, 100 microg SR141716A injected subcutaneously in the back did not antagonize local delta9-THC.

conclusionsThese results indicate that the site of action of locally applied delta9-THC is in the tail. It provides functional evidence that activation of peripheral cannabinoid CB1 receptors can attenuate capsaicin-induced thermal nociception in non-human primates and suggests a new approach for cannabinoids in pain management.

Indexed as

Analgesics, Non-NarcoticAnimalsCannabinoidsCapsaicinDronabinolFemaleMacaca mulattaMalePain MeasurementPiperidinesPyrazolesReceptors, CannabinoidReceptors, DrugRimonabantAnalgesics, Non-NarcoticCannabinoidsCapsaicinDronabinolPiperidinesPyrazolesReceptors, CannabinoidReceptors, DrugRimonabant

Identifiers

PMID10353438
PMCPMC2862358
OpenAlexW2046678517

What OpenQuestion holds

Textmetadata
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.