Evidence map›Paper›PMID 34146575›Full record

ArticlePhysiology & behavior2021

Kratom pharmacology: Clues from planarians exposed to mitragynine.

Sarah Uddin, Sonita Wiah, Tony Kim, Mia N Watson, Tyra Jennings, Scott M Rawls

Open access · greenAbstract read
In one paragraph

Article in Physiology & behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.1field-weighted citation impact, top 59% 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

1 citing paper in PubMed, 1 citations in OpenAlex.

  1. 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

6 authors at 1 institution in 1 country.

Sarah UddinCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Sonita WiahCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Tony KimCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Mia N WatsonCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Tyra JenningsCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Scott M RawlsCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA; Department of Pharmacology, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, 19140, USA. Electronic address: scott.rawls@temple.edu.
Temple University · US

Funding

Pilot Projects Core (PPC)P30DA013429 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI Anjali M Rajadhyaksha · 2000 to 2026
$34.6M
Therapeutic secrets of kratom alkaloid mitragynine: Testing efficacy in preclinical neuropathic pain and abuse liability models and characterization of underlying opioid and adrenergic mechanismsR21AT010404 · NCCIH · TEMPLE UNIV OF THE COMMONWEALTH · PI RAWLS, SCOTT M. · 2019 to 2020
$436k
NCCIH NIH HHS R21 AT010404NIDA NIH HHS P30 DA013429
6 · The paper itself

Abstract

Mitragynine (MG), the most prevalent bioactive alkaloid in kratom, displays nanomolar affinity for µ, κ and δ opioid receptors and produces opioid-dependent antinociception and dependence in rats. Here, using a battery of behavioral assays, we investigated MG effects in planarians. Acute MG exposure (< 100 μM) did not affect planarian motility or environmental preference, but reduced motility was detected during abstinence from chronic MG (1, 10 μM). MG (10 μM) produced place conditioning effects that were reduced by naltrexone (10  μΜ). These results suggest that MG produces opioid-sensitive reinforcing effects in planarians and MG pharmacology is conserved across different species.

Indexed as

MitragynaPlanariansSecologanin Tryptamine AlkaloidsAnimalsNaltrexoneRatsmitragynineNaltrexoneSecologanin Tryptamine AlkaloidsDependenceInvertebrateKratomMitragynineOpioidPlace preferencePlanarian

Identifiers

PMID34146575
PMCPMC8440406
OpenAlexW3168892269

What OpenQuestion holds

Textmetadata
LicenceTDM
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.