Evidence map›Paper›PMID 21391977›Full record

ArticleBritish journal of pharmacology2011

Fenretinide metabolism in humans and mice: utilizing pharmacological modulation of its metabolic pathway to increase systemic exposure.

Jason P Cooper, Kyunghwa Hwang, Hardeep Singh, Dong Wang, C Patrick Reynolds, Robert W Curley, Simon C Williams, Barry J Maurer, Min H Kang

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

24 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
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  8. Fenretinide inhibits vitamin A formation from β-carotene and regulates carotenoid levels in mice.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2022
    Article
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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

9 authors at 3 institutions in 1 country.

Jason P CooperCancer Center and Departments of Cell Biology & Biochemistry Pharmacology & Neuroscience Internal Medicine Pediatrics, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
Kyunghwa Hwang
Hardeep Singh
Dong Wang
C Patrick Reynolds
Robert W Curley
Simon C Williams
Barry J Maurer
Min H Kang
National Cancer Center · USTexas Tech University · USThe Ohio State University · US

Funding

Vascular endothelial cell integrins in angiogenesisP01CA081403 · NCI · CHILDREN'S HOSPITAL OF LOS ANGELES · PI SEEGER, ROBERT CHARLES · 2000 to 2014
$28.5M
ANALOG STUDIES OF RETINOID GLUCURONIDE ACTIVITYR01CA049837 · NCI · OHIO STATE UNIVERSITY · PI CURLEY, ROBERT W · 1991 to 2013
$3.6M
ENHANCING ACTIVITY OF ALKYLATING AGENTS IN NEUROBLASTOMAR01CA082830 · NCI · TEXAS TECH UNIVERSITY HEALTH SCIS CENTER · PI REYNOLDS, CHARLES PATRICK · 1999 to 2011
$1.7M
Novel Ceramide-based Chemotherapy for Acute LeukemiaR01CA100895 · NCI · TEXAS TECH UNIVERSITY HEALTH SCIS CENTER · PI MAURER, BARRY J · 2004 to 2007
$980k
NCI NIH HHS CA49837NCI NIH HHS CA81403NCI NIH HHS CA82830NCI NIH HHS P01 CA081403NCI NIH HHS R01 CA049837NCI NIH HHS R01 CA082830NCI NIH HHS R01 CA100895
6 · The paper itself

Abstract

background and purposeHigh plasma levels of fenretinide [N-(4-hydroxyphenyl)retinamide (4-HPR)] were associated with improved outcome in a phase II clinical trial. Low bioavailability of 4-HPR has been limiting its therapeutic applications. This study characterized metabolism of 4-HPR in humans and mice, and to explore the effects of ketoconazole, an inhibitor of CYP3A4, as a modulator to increase 4-HPR plasma levels in mice and to increase the low bioavailability of 4-HPR. EXPERIMENTAL APPROACH: 4-HPR metabolites were identified by mass spectrometric analysis and levels of 4-HPR and its metabolites [N-(4-methoxyphenyl)retinamide (4-MPR) and 4-oxo-N-(4-hydroxyphenyl)retinamide (4-oxo-4-HPR)] were quantified by high-performance liquid chromatography (HPLC). Kinetic analysis of enzyme activities and the effects of enzyme inhibitors were performed in pooled human and pooled mouse liver microsomes, and in human cytochrome P450 (CYP) 3A4 isoenzyme microsomes. In vivo metabolism of 4-HPR was inhibited in mice. KEY

resultsSix 4-HPR metabolites were identified in the plasma of patients and mice. 4-HPR was oxidized to 4-oxo-4-HPR, at least in part via human CYP3A4. The CYP3A4 inhibitor ketoconazole significantly reduced 4-oxo-4-HPR formation in both human and mouse liver microsomes. In two strains of mice, co-administration of ketoconazole with 4-HPR in vivo significantly increased 4-HPR plasma concentrations by > twofold over 4-HPR alone and also increased 4-oxo-4-HPR levels. CONCLUSIONS AND IMPLICATIONS: Mice may serve as an in vivo model of human 4-HPR pharmacokinetics. In vivo data suggest that the co-administration of ketoconazole at normal clinical doses with 4-HPR may increase systemic exposure to 4-HPR in humans.

Indexed as

AnimalsAntineoplastic AgentsCell LineDrug InteractionsFenretinideHumansKetoconazoleMiceMice, Inbred NODMice, NudeMice, SCIDMicrosomes, LiverMolecular StructureAntineoplastic AgentsFenretinideKetoconazole

Identifiers

PMID21391977
PMCPMC3144539
OpenAlexW2143217083

What OpenQuestion holds

Textmetadata
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.