Evidence map›Paper›PMID 9655854›Full record

ArticleThe Journal of pharmacology and experimental therapeutics1998

The role of peripheral mu opioid receptors in the modulation of 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, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. A novel orvinol analog, BU08028, as a safe opioid analgesic without abuse liability in primates.Proceedings of the National Academy of Sciences of the United States of America · 2016
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  9. Behavioral effects of a synthetic agonist selective for nociceptin/orphanin FQ peptide receptors in monkeys.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2009
    Article
  10. Behavioral pharmacology of the mu/delta opioid glycopeptide MMP2200 in rhesus monkeys.The Journal of pharmacology and experimental therapeutics · 2008
    Article
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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 2 institutions in 1 country.

M C KoDepartment of Pharmacology, University of Michigan, Ann Arbor, USA.
E R Butelman
J H Woods
University of Michigan–Ann Arbor · USRockefeller University · US

Funding

Narcotic Drug and Opioid Peptide Basic Research projectP01DA000254 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WOODS, JAMES H · 2003 to 2006
$5.0M
NIDA NIH HHS P01 DA000254PHS HHS 00254
6 · The paper itself

Abstract

Capsaicin produces burning pain, followed by nociceptive responses, such as allodynia and hyperalgesia in humans and rodents. In the present study, when administered subcutaneously into the tail of rhesus monkeys, capsaicin (0.01-0.32 mg) dose-dependently produced thermal allodynia manifested as reduced tail-withdrawal latencies in 46 degrees C water, from a maximum value of 20 sec to approximately 2 sec. Coadministration of selective mu opioid agonists, fentanyl (0.003-0.1 mg) and (D-Ala2,N-Me-Phe4, Gly5-ol)-enkephalin (0.001-0.03 mg), dose-dependently inhibited capsaicin-induced allodynia. This local antinociception was antagonized by small doses of opioid antagonists, quadazocine (0.03 mg) and quaternary naltrexone (1 mg), applied locally in the tail. However, these doses of antagonists injected s.c. in the back did not antagonize local fentanyl. Comparing the relative potency of either agonist or antagonist after local and systemic administration confirmed that the site of action of locally applied mu opioid agonists is in the tail. These results provide evidence that activation of peripheral mu opioid receptors can diminish capsaicin-induced allodynia in primates. This experimental pain model could be a useful tool for evaluating peripherally acting antinociceptive agents without central side effects and enhance new approaches to the treatment of inflammatory pain.

Indexed as

AnimalsAzocinesCapsaicinEnkephalin, Ala(2)-MePhe(4)-Gly(5)-EnkephalinsFemaleHot TemperatureMacaca mulattaMaleNaltrexonePainReceptors, Opioid, muAzocinesCapsaicinEnkephalin, Ala(2)-MePhe(4)-Gly(5)-EnkephalinsNaltrexonequadazocineReceptors, Opioid, mu

Identifiers

PMID9655854
PMCPMC2866037
OpenAlexW2162680112

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.