Evidence map›Paper›PMID 31324853›Full record

ArticleScientific reports2019

Sex-, feeding-, and circadian time-dependency of P-glycoprotein expression and activity - implications for mechanistic pharmacokinetics modeling.

Alper Okyar, Swati A Kumar, Elisabeth Filipski, Enza Piccolo, Narin Ozturk, Helena Xandri-Monje, Zeliha Pala, Kristin Abraham, Ana Rita Gato de Jesus Gomes, Mehmet N Orman and 4 more

Open access · goldAbstract readComparative Study
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 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

19 citing papers in PubMed, 42 citations in OpenAlex.

  1. Sex and the Developmental Environment Shape Molecular Networks Underlying Bronchial Responsiveness in Mice.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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  13. Circadian Effects of Drug Responses.Annual review of biomedical engineering · 2021
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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

14 authors at 5 institutions in 4 countries.

Alper OkyarDepartment of Pharmacology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, TR-34116, Turkey.
Swati A KumarDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Elisabeth FilipskiINSERM and Paris Sud university, UMRS 935, Team "Cancer Chronotherapy and Postoperative Liver Functions", Campus CNRS, Villejuif, F-94807, France.
Enza PiccoloUniversità degli Studi G. d'Annunzio Chieti e Pescara, Institute for Advanced Biomedical Technologies, Chieti, Italy.
Narin OzturkDepartment of Pharmacology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, TR-34116, Turkey.
Helena Xandri-MonjeDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Zeliha PalaDepartment of Pharmacology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, TR-34116, Turkey.
Kristin AbrahamDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Ana Rita Gato de Jesus GomesDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Mehmet N OrmanDepartment of Biostatistics and Medical Informatics, Faculty of Medicine, Ege University, Bornova, Turkey.
Xiao-Mei LiINSERM and Paris Sud university, UMRS 935, Team "Cancer Chronotherapy and Postoperative Liver Functions", Campus CNRS, Villejuif, F-94807, France.
Robert DallmannDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Francis LéviDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK.ORCID http://orcid.org/0000-0003-1364-7463
Annabelle BallestaDivision of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK. a.c.ballesta@warwick.ac.uk.
University of Warwick · GBCentre National de la Recherche Scientifique · FRIstanbul University · TREge University · TRUniversity of Chieti-Pescara · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

P-glycoprotein (P-gp) largely influences the pharmacokinetics (PK) and toxicities of xenobiotics in a patient-specific manner so that personalized drug scheduling may lead to significant patient's benefit. This systems pharmacology study investigated P-gp activity in mice according to organ, sex, feeding status, and circadian time. Sex-specific circadian changes were found in P-gp ileum mRNA and protein levels, circadian amplitudes being larger in females as compared to males. Plasma, ileum and liver concentrations of talinolol, a pure P-gp substrate, significantly differed according to sex, feeding and circadian timing. A physiologically-based PK model was designed to recapitulate these datasets. Estimated mesors (rhythm-adjusted mean) of ileum and hepatic P-gp activity were higher in males as compared to females. Circadian amplitudes were consistently higher in females and circadian maxima varied by up to 10 h with respect to sex. Fasting increased P-gp activity mesor and dampened its rhythm. Ex-vivo bioluminescence recordings of ileum mucosae from transgenic mice revealed endogenous circadian rhythms of P-gp protein expression with a shorter period, larger amplitude, and phase delay in females as compared to males. Importantly, this study provided model structure and parameter estimates to refine PK models of any P-gp substrate to account for sex, feeding and circadian rhythms.

Indexed as

Circadian RhythmSex CharacteristicsAnimalsATP Binding Cassette Transporter, Subfamily BBiological TransportCitalopramColonCrosses, GeneticEatingFastingFemaleGene Expression RegulationIleumIntestinal MucosaLiverMaleAbcb1b protein, mouseATP Binding Cassette Transporter, Subfamily BCitaloprammultidrug resistance protein 3PropanolaminesRNA, Messengertalinolol

Identifiers

PMID31324853
PMCPMC6642159
OpenAlexW2962863212

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.