Evidence map›Paper›PMID 10087027›Full record

ArticleThe Journal of pharmacology and experimental therapeutics1999

Activation of peripheral kappa opioid receptors inhibits capsaicin-induced thermal nociception in rhesus monkeys.

M C Ko, E R Butelman, J H Woods

Open access · greenAbstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

17 citing papers in PubMed, 39 citations in OpenAlex.

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  10. Aqueous humor dynamics in monkeys in response to the kappa opioid agonist bremazocine.Transactions of the American Ophthalmological Society · 2007
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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.

M C KoDepartments of Pharmacology and Psychology, University of Michigan, Ann Arbor, USA. mko@umich.edu
E R Butelman
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 MOSBERG, HENRY ISAAC · 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

8-Methyl-N-vanillyl-6-nonenamide (capsaicin) was locally applied in the tail of rhesus monkeys to evoke a nociceptive response, thermal allodynia, which was manifested as reduced tail-withdrawal latencies in normally innocuous 46 degrees C water. Coadministration of three kappa opioid ligands, U50,488 (3.2-100 microgram), bremazocine (0.1-3.2 microgram), and dynorphin A(1-13) (3.2-100 microgram), with capsaicin in the tail dose-dependently inhibited capsaicin-induced allodynia. This local antinociception was antagonized by a small dose of an opioid antagonist, quadazocine; (0.32 mg), applied in the tail; however, this dose of quadazocine injected s.c. in the back did not antagonize local U50,488. Comparing the relative potency of either agonist or antagonist after local and systemic administration confirmed that the site of action of locally applied kappa opioid agonists is in the tail. In addition, local nor-binaltorphimine (0.32 mg) and oxilorphan (0.1-10 microgram) antagonist studies raised the possibility of kappa opioid receptor subtypes in the periphery, which indicated that U50,488 produced local antinociception by acting on kappa1 receptors, but bremazocine acted probably on non-kappa1 receptors. These results provide functional evidence that activation of peripheral kappa opioid receptors can diminish capsaicin-induced allodynia in primates. This experimental pain model is a useful tool for evaluating peripherally antinociceptive actions of kappa agonists without central side effects and suggests new approaches for opioid pain management.

Indexed as

3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-IsomerAnalgesicsAnimalsAzocinesBenzomorphansCapsaicinDynorphinsFemaleHot TemperatureLigandsMacaca mulattaMaleNaltrexoneNarcotic AntagonistsPain MeasurementPeptide Fragments3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-IsomerAnalgesicsAzocinesBenzomorphansbremazocineCapsaicindynorphin (1-13)DynorphinsLigandsNaltrexoneNarcotic AntagonistsnorbinaltorphiminePeptide FragmentsquadazocineReceptors, Opioid, kappa

Identifiers

PMID10087027
PMCPMC2865196
OpenAlexW1898762492

What OpenQuestion holds

Texttitle and abstract
measurements read2
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.