Evidence map›Paper›PMID 30874620›Full record

ArticleScientific reports2019

Scaling in vitro activity of CYP3A7 suggests human fetal livers do not clear retinoic acid entering from maternal circulation.

Ariel R Topletz, Guo Zhong, Nina Isoherranen

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.8field-weighted citation impact, top 30% 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

16 citing papers in PubMed, 13 citations in OpenAlex.

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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

3 authors at 1 institution in 1 country.

Ariel R TopletzDepartment of Pharmaceutics, University of Washington School of Pharmacy, Box 357630, Seattle, WA, 98195, USA.
Guo ZhongDepartment of Pharmaceutics, University of Washington School of Pharmacy, Box 357630, Seattle, WA, 98195, USA.ORCID 0000-0001-7230-8336
Nina IsoherranenDepartment of Pharmaceutics, University of Washington School of Pharmacy, Box 357630, Seattle, WA, 98195, USA. ni2@uw.edu.
University of Washington · US

Funding

LABORATORY OF DEVELOPMENTAL BIOLOGYR24HD000836 · NICHD · UNIVERSITY OF WASHINGTON · PI Ian Amos Glass · 1995 to 2026
$16.9M
Pharmacological Sciences SupplementT32GM007750 · NIGMS · UNIVERSITY OF WASHINGTON · PI ATKINS, WILLIAM M · 1985 to 2023
$12.6M
Understanding Fetal Exposure to Cannabinoids Through In Vitro and In Vivo StudiesP01DA032507 · NIDA · UNIVERSITY OF WASHINGTON · PI UNADKAT, JASHVANT D · 2013 to 2023
$12.4M
NRSA Training CoreTL1TR002318 · NCATS · UNIVERSITY OF WASHINGTON · PI Megan Moore · 2017 to 2026
$8.4M
Mechanisms of Regulation of Retinoic Acid HomeostasisR01GM111772 · NIGMS · UNIVERSITY OF WASHINGTON · PI ISOHERRANEN, NINA · 2014 to 2021
$3.0M
Institute for Translational Health Science (TL1)TL1RR025016 · NCRR · UNIVERSITY OF WASHINGTON · PI DISIS, MARY L. · 2007 to 2011
$2.7M
Institute of Translational Health SciencesTL1TR000422 · NCATS · UNIVERSITY OF WASHINGTON · PI DISIS, MARY L. · 2012 to 2016
$2.1M
NCATS NIH HHS TL1 TR000422NCATS NIH HHS TL1 TR002318NCRR NIH HHS TL1 RR025016NICHD NIH HHS R24 HD000836NIDA NIH HHS P01 DA032507NIGMS NIH HHS R01 GM111772NIGMS NIH HHS T32 GM007750
6 · The paper itself

Abstract

All-trans-retinoic acid (atRA), the active metabolite of vitamin A, is a critical signaling molecule during embryonic and fetal development and is necessary for maternal health. Fetal exposure to endogenous atRA is tightly regulated during gestation in a tissue specific manner and maternal exposure to exogenous retinoids during pregnancy is teratogenic. The clearance of atRA is primarily mediated by the cytochrome P450 (CYP) 26 enzymes, which play an essential role in controlling retinoid gradients during organogenesis. We hypothesized that CYP26 enzymes in the human fetal liver also function as a protective barrier to prevent maternal atRA reaching fetal circulation. Using human fetal liver tissue, we found that the mRNA of CYP26A1 and CYP26B1 enzymes is expressed in the human fetal liver. However, based on inhibition studies, metabolite profiles and correlation of atRA metabolism with testosterone hydroxylation, clearance of atRA in the fetal livers was mediated by CYP3A7. Based on in vitro-to-in vivo scaling, atRA clearance in the fetal liver was quantitatively minimal, thus providing an insufficient maternal-fetal barrier for atRA exposure.

Indexed as

Maternal-Fetal ExchangeCytochrome P-450 CYP3ACytochrome P-450 Enzyme SystemFemaleFetusHumansHydroxylationLiverMalePregnancyRetinoic Acid 4-HydroxylaseRetinoidsSignal TransductionTretinoinVitamin ACYP26A1 protein, humanCYP26B1 protein, humanCYP3A7 protein, humanCytochrome P-450 CYP3ACytochrome P-450 Enzyme SystemRetinoic Acid 4-HydroxylaseRetinoidsTretinoinVitamin A

Identifiers

PMID30874620
PMCPMC6420499
OpenAlexW2922036154

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.