Evidence map›Paper›PMID 25365809›Full record

ArticleBrain and behavior2014

Intrathecal administration of clonidine or yohimbine decreases the nociceptive behavior caused by formalin injection in the marsh terrapin (Pelomedusa subrufa).

Christopher M Makau, Philemon K Towett, Klas S P Abelson, Titus I Kanui

Open access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

3 citing papers in PubMed, 11 citations in OpenAlex.

  1. Review
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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

4 authors at 3 institutions in 2 countries.

Christopher M MakauDepartment of Veterinary Anatomy and Physiology, University of Nairobi P.O Box 30197-00100, Nairobi, Kenya.
Philemon K TowettDepartment of Veterinary Anatomy and Physiology, University of Nairobi P.O Box 30197-00100, Nairobi, Kenya.
Klas S P AbelsonDepartment of Experimental Medicine, University of Copenhagen, Faculty of Health Sciences Blegdamsvej 3B, Copenhagen N, DK-2200, Denmark.
Titus I KanuiSouth Eastern Kenya University, School of Agriculture and Veterinary Sciences P.O Box 170-90200, Kitui, Kenya.
University of Nairobi · KESouth Eastern Kenya University · KEUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe role of noradrenergic system in the control of nociception is documented in some vertebrate animals. However, there are no data showing the role of this system on nociception in the marsh terrapins. METHODOLOGY: In this study, the antinociceptive action of intrathecal administration of the α 2-adrenoreceptor agonist clonidine and α 2-adrenoreceptor antagonist yohimbine was evaluated in the African marsh terrapin using the formalin test. The interaction of clonidine and yohimbine was also evaluated.

resultsIntrathecal administration of clonidine (37.5 or 65 μg/kg) caused a significant reduction in the mean time spent in pain-related behavior. Yohimbine, at a dose of 25 μg/kg, significantly blocked the effect of clonidine (65 μg/kg). However, administration of yohimbine (40 or 53 μg/kg) caused a significant reduction in the mean time spent in pain-related behavior. Intrathecal administration of yohimbine (53 μg/kg) followed immediately by intrathecal injection of the serotonergic methysergide maleate (20 μg/kg) resulted in a significant reversal of the antinociceptive effect of yohimbine.

conclusionThe present study documented the intrathecal administration of drugs in the marsh terrapin, a technique that can be applied in future studies on these animals. The data also suggest the involvement of both α 2-adrenoreceptors and 5HT receptors in the modulation of nociception in testudines.

Indexed as

TurtlesAdrenergic alpha-2 Receptor AgonistsAdrenergic alpha-2 Receptor AntagonistsAnalgesicsAnimalsClonidineDose-Response Relationship, DrugDrug InteractionsFormaldehydeInjections, SpinalMethysergidePainPain MeasurementRandom AllocationSerotonin AntagonistsYohimbineAdrenergic alpha-2 Receptor AgonistsAdrenergic alpha-2 Receptor AntagonistsAnalgesicsClonidineFormaldehydeMethysergideSerotonin AntagonistsYohimbineAntinociceptionnociceptiontestudinesα2-adrenergic receptors

Identifiers

PMID25365809
PMCPMC4212113
OpenAlexW1993089712

What OpenQuestion holds

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LicenceCC BY
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.