Evidence map›Paper›PMID 37392779›Full record

ArticleLife sciences2023

Cannabinoid mechanisms contribute to the therapeutic efficacy of the kratom alkaloid mitragynine against neuropathic, but not inflammatory pain.

Daniel J Farkas, Saadet Inan, Laila N Heydari, Clare T Johnson, Pingwei Zhao, Heather B Bradshaw, Sara Jane Ward, Scott M Rawls

Open access · greenAbstract read
In one paragraph

Article in Life sciences, 2023. 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
1.2field-weighted citation impact, top 22% 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, 5 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
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

8 authors at 2 institutions in 1 country.

Daniel J FarkasCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA. Electronic address: daniel.farkas@temple.edu.
Saadet InanCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA.
Laila N HeydariCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA.
Clare T JohnsonDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
Pingwei ZhaoCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA.
Heather B BradshawDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
Sara Jane WardCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA.
Scott M RawlsCenter for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA; Department of Neural Sciences, Lewis Katz School of Medicine, Temple University, 3500 North Broad Street, Philadelphia, PA, USA.
Temple University · USIndiana University Bloomington · US

Funding

Pilot Projects Core (PPC)P30DA013429 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI Anjali M Rajadhyaksha · 2000 to 2026
$34.6M
TRAINING PROGRAM: DRUGS OF ABUSE RELATED NEUROPEPTIDEST32DA007237 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI ELLEN M UNTERWALD · 1988 to 2026
$10.6M
NIDA NIH HHS P30 DA013429NIDA NIH HHS T32 DA007237
6 · The paper itself

Abstract

aimsMitragynine (MG) is an alkaloid found in Mitragyna speciosa (kratom), a plant used to self-treat symptoms of opioid withdrawal and pain. Kratom products are commonly used in combination with cannabis, with the self-treatment of pain being a primary motivator of use. Both cannabinoids and kratom alkaloids have been characterized to alleviate symptoms in preclinical models of neuropathic pain such as chemotherapy-induced peripheral neuropathy (CIPN). However, the potential involvement of cannabinoid mechanisms in MG's efficacy in a rodent model of CIPN have yet to be explored. MAIN

methodsPrevention of oxaliplatin-induced mechanical hypersensitivity and formalin-induced nociception were assessed following intraperitoneal administration of MG and CB1, CB2, or TRPV1 antagonists in wildtype and cannabinoid receptor knockout mice. The effects of oxaliplatin and MG exposure on the spinal cord endocannabinoid lipidome was assessed by HPLC-MS/MS. KEY

findingsThe efficacy of MG on oxaliplatin-induced mechanical hypersensitivity was partially attenuated upon genetic deletion of cannabinoid receptors, and completely blocked upon pharmacological inhibition of CB1, CB2, and TRPV1 channels. This cannabinoid involvement was found to be selective to a model of neuropathic pain, with minimal effects on MG-induced antinociception in a model of formalin-induced pain. Oxaliplatin was found to selectively disrupt the endocannabinoid lipidome in the spinal cord, which was prevented by repeated MG exposure. SIGNIFICANCE: Our findings suggest that cannabinoid mechanisms contribute to the therapeutic efficacy of the kratom alkaloid MG in a model of CIPN, which may result in increased therapeutic efficacy when co-administered with cannabinoids.

Indexed as

Antineoplastic AgentsCannabinoidsMitragynaNeuralgiaSecologanin Tryptamine AlkaloidsAnimalsEndocannabinoidsMiceOxaliplatinReceptors, CannabinoidTandem Mass SpectrometryAntineoplastic AgentsCannabinoidsEndocannabinoidsmitragynineOxaliplatinReceptors, CannabinoidSecologanin Tryptamine AlkaloidsCannabinoidsKratomMitragynineNeuropathic pain

Identifiers

PMID37392779
PMCPMC10527577
OpenAlexW4382542543

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.