Evidence map›Paper›PMID 18698000›Full record

ArticleThe Journal of pharmacology and experimental therapeutics2008

The endocannabinoid anandamide is a substrate for the human polymorphic cytochrome P450 2D6.

Natasha T Snider, Matthew J Sikora, Chitra Sridar, Thomas J Feuerstein, James M Rae, Paul F Hollenberg

Open access · greenAbstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
9.9field-weighted citation impact, top 2% 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

40 citing papers in PubMed, 103 citations in OpenAlex.

  1. Trial
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  3. Endogenous biomarkers for assessing CYP3A4 and CYP2D6 activity: A critical review.Drug metabolism and disposition: the biological fate of chemicals · 2026
    Review
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  17. Article
  18. Anandamide and its metabolites: what are their roles in the kidney?Frontiers in bioscience (Scholar edition) · 2016
    Review
  19. Interindividual Variability in Cytochrome P450-Mediated Drug Metabolism.Drug metabolism and disposition: the biological fate of chemicals · 2016
    Review
  20. 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 3 institutions in 2 countries.

Natasha T SniderDepartment of Pharmacology, University of Michigan, Ann Arbor, MI 48109-5632, USA.
Matthew J Sikora
Chitra Sridar
Thomas J Feuerstein
James M Rae
Paul F Hollenberg
University of Michigan–Ann Arbor · USPalmetto Hematology Oncology · USUniversity of Freiburg · DE

Funding

INTERDEPARTMENTAL TRAINING IN PHARMACOLOGICAL SCIENCEST32GM007767 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 1985 to 2019
$10.2M
HEMOPROTEIN-CATALYZED OXYGENATIONS OF CARCINOGENSR01CA016954 · NCI · WAYNE STATE UNIVERSITY · PI HOLLENBERG, PAUL F. · 1986 to 2011
$4.3M
HEMOPROTEIN-CATALYZED OXYGENATIONS OF CARCINOGENSR37CA016954 · NCI · WAYNE STATE UNIVERSITY · PI HOLLENBERG, PAUL F. · 1988 to 1995
–
NCI NIH HHS CA-16954NCI NIH HHS R01 CA016954NIGMS NIH HHS T32 GM007767
6 · The paper itself

Abstract

Members of the cytochrome P450 (P450) family of drug-metabolizing enzymes are present in the human brain, and they may have important roles in the oxidation of endogenous substrates. The polymorphic CYP2D6 is one of the major brain P450 isoforms and has been implicated in neurodegeneration, psychosis, schizophrenia, and personality traits. The objective of this study was to determine whether the endocannabinoid arachidonoylethanolamide (anandamide) is a substrate for CYP2D6. Anandamide is the endogenous ligand to the cannabinoid receptor CB1, which is also activated by the main psychoactive component in marijuana. Signaling via the CB1 receptor alters sensory and motor function, cognition, and emotion. Recombinant CYP2D6 converted anandamide to 20-hydroxyeicosatetraenoic acid ethanolamide and 5,6-, 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EET-EAs) with low micromolar K(m) values. CYP2D6 further metabolized the epoxides of anandamide to form novel dioxygenated derivatives. Human brain microsomal and mitochondrial preparations metabolized anandamide to form hydroxylated and epoxygenated products, respectively. An inhibitory antibody against CYP2D6 significantly decreased the mitochondrial formation of the EET-EAs. To our knowledge, anandamide and its epoxides are the first eicosanoid-like molecules to be identified as CYP2D6 substrates. Our study suggests that anandamide may be a physiological substrate for brain mitochondrial CYP2D6, implicating this polymorphic enzyme as a potential component of the endocannabinoid system in the brain. This study also offers support to the hypothesis that neuropsychiatric phenotype differences among individuals with genetic variations in CYP2D6 could be ascribable to interactions of this enzyme with endogenous substrates.

Indexed as

8,11,14-Eicosatrienoic AcidArachidonic AcidArachidonic AcidsBrainCytochrome P-450 CYP2D6EndocannabinoidsEpoxy CompoundsHumansHydroxylationMicrosomesMitochondriaPolyunsaturated AlkamidesTime Factors14,15-epoxy-5,8,11-eicosatrienoic acid8,11,14-Eicosatrienoic AcidanandamideArachidonic AcidArachidonic AcidsCytochrome P-450 CYP2D6EndocannabinoidsEpoxy CompoundsPolyunsaturated Alkamides

Identifiers

PMID18698000
PMCPMC2704579
OpenAlexW2109705351

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.