Evidence map›Paper›PMID 37716419›Full record

ArticleChemico-biological interactions2023

An in vitro evaluation of kratom (Mitragyna speciosa) on the catalytic activity of carboxylesterase 1 (CES1).

Philip W Melchert, Qingchen Zhang, Sushobhan Mukhopadhyay, Siva Rama Raju Kanumuri, Christopher R McCurdy, John S Markowitz

Open access · greenAbstract read
In one paragraph

Article in Chemico-biological interactions, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
  2. Article
  3. An in vitro evaluation of common botanical extracts on carboxylesterase 1 catalytic activity.Drug metabolism and disposition: the biological fate of chemicals · 2025
    Article
  4. Evaluating the drug interactions in kratom usage: clinical application.Expert opinion on drug metabolism & toxicology · 2025
    Review
  5. Review
  6. Article
  7. Journal of Taibah University Medical Sciences · 2024
    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

6 authors at 1 institution in 1 country.

Philip W MelchertDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, FL, USA. Electronic address: melchertphilip@ufl.edu.
Qingchen ZhangDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, FL, USA.
Sushobhan MukhopadhyayDepartment of Medicinal Chemistry, University of Florida, Gainesville, FL, USA.
Siva Rama Raju KanumuriDepartment of Pharmaceutics, University of Florida, Gainesville, FL, USA.
Christopher R McCurdyDepartment of Medicinal Chemistry, University of Florida, Gainesville, FL, USA.
John S MarkowitzDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, FL, USA.
University of Florida · US

Funding

Opioid use disorders: UF Pharmacy medications discovery and developmentUG3DA048353 · NIDA · UNIVERSITY OF FLORIDA · PI MCCURDY, CHRISTOPHER R, MCMAHON, LANCE R. · 2019 to 2020
$3.6M
Kratom alkaloids: in vitro and in vivo pharmacological mechanismsR01DA047855 · NIDA · UNIVERSITY OF FLORIDA · PI MCCURDY, CHRISTOPHER R, MCMAHON, LANCE R. · 2019 to 2023
$3.6M
Carboxylesterase 1 Genetic Variation and Methylphenidate in ADHDR01HD093612 · NICHD · UNIVERSITY OF FLORIDA · PI MARKOWITZ, JOHN S, ZHU, HAOJIE · 2018 to 2022
$3.0M
NICHD NIH HHS R01 HD093612NIDA NIH HHS R01 DA047855NIDA NIH HHS UG3 DA048353
6 · The paper itself

Abstract

Kratom, (Mitragyna Speciosa Korth.) is a plant indigenous to Southeast Asia whose leaves are cultivated for a variety of medicinal purposes and mostly consumed as powders or tea in the United States. Kratom use has surged in popularity with the lay public and is currently being investigated for possible therapeutic benefits including as a treatment for opioid withdrawal due to the pharmacologic effects of its indole alkaloids. A wide array of psychoactive compounds are found in kratom, with mitragynine being the most abundant alkaloid. The drug-drug interaction (DDI) potential of mitragynine and related alkaloids have been evaluated for effects on the major cytochrome P450s (CYPs) via in vitro assays and limited clinical investigations. However, no thorough assessment of their potential to inhibit the major hepatic hydrolase, carboxylesterase 1 (CES1), exists. The purpose of this study was to evaluate the in vitro inhibitory potential of kratom extracts and its individual major alkaloids using an established CES1 assay and incubation system. Three separate kratom extracts and the major kratom alkaloids mitragynine, speciogynine, speciociliatine, paynantheine, and corynantheidine displayed a concentration-dependent reversible inhibition of CES1. The experimental K

Indexed as

MitragynaCarboxylic Ester HydrolasesHumansPlant ExtractsCarboxylic Ester HydrolasesCES1 protein, humanPlant ExtractsCES1Kratom alkaloidsMitragyna speciosaMitragynine

Identifiers

PMID37716419
PMCPMC10606955
OpenAlexW4386809407

What OpenQuestion holds

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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.