Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol

Abstract Adenosine triphosphate binding cassette (ABC) transporters transfer lipid-soluble molecules across cellular interfaces either directly or after enzymatic metabolism. RNAseq analysis identified transcripts for ABC transporters and enzymes in rat E19, P5 and adult brain and choroid plexus and...

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Autores principales:	L. M. Koehn, Y. Huang, M. D. Habgood, S. Nie, S. Y. Chiou, R. B. Banati, K. M. Dziegielewska, N. R. Saunders
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/90f3d5e87469441d9a47fd8649e0a6c9
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spelling	oai:doaj.org-article:90f3d5e87469441d9a47fd8649e0a6c92021-12-02T16:56:43ZEfflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol10.1038/s41598-021-99139-62045-2322https://doaj.org/article/90f3d5e87469441d9a47fd8649e0a6c92021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99139-6https://doaj.org/toc/2045-2322Abstract Adenosine triphosphate binding cassette (ABC) transporters transfer lipid-soluble molecules across cellular interfaces either directly or after enzymatic metabolism. RNAseq analysis identified transcripts for ABC transporters and enzymes in rat E19, P5 and adult brain and choroid plexus and E19 placenta. Their functional capacity to efflux small molecules was studied by quantitative analysis of paracetamol (acetaminophen) and its metabolites using liquid scintillation counting, autoradiography and ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS). Animals were treated acutely (30 min) and chronically (5 days, twice daily) with paracetamol (15 mg/kg) to investigate ability of brain and placenta barriers to regulate ABC transport functionality during extended treatment. Results indicated that transcripts of many efflux-associated ABC transporters were higher in adult brain and choroid plexus than at earlier ages. Chronic treatment upregulated certain transcripts only in adult brain and altered concentrations of paracetamol metabolites in circulation of pregnant dams. Combination of changes to metabolites and transport system transcripts may explain observed changes in paracetamol entry into adult and fetal brains. Analysis of lower paracetamol dosing (3.75 mg/kg) indicated dose-dependent changes in paracetamol metabolism. Transcripts of ABC transporters and enzymes at key barriers responsible for molecular transport into the developing brain showed alterations in paracetamol pharmacokinetics in pregnancy following different treatment regimens.L. M. KoehnY. HuangM. D. HabgoodS. NieS. Y. ChiouR. B. BanatiK. M. DziegielewskaN. R. SaundersNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q L. M. Koehn Y. Huang M. D. Habgood S. Nie S. Y. Chiou R. B. Banati K. M. Dziegielewska N. R. Saunders Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
description	Abstract Adenosine triphosphate binding cassette (ABC) transporters transfer lipid-soluble molecules across cellular interfaces either directly or after enzymatic metabolism. RNAseq analysis identified transcripts for ABC transporters and enzymes in rat E19, P5 and adult brain and choroid plexus and E19 placenta. Their functional capacity to efflux small molecules was studied by quantitative analysis of paracetamol (acetaminophen) and its metabolites using liquid scintillation counting, autoradiography and ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS). Animals were treated acutely (30 min) and chronically (5 days, twice daily) with paracetamol (15 mg/kg) to investigate ability of brain and placenta barriers to regulate ABC transport functionality during extended treatment. Results indicated that transcripts of many efflux-associated ABC transporters were higher in adult brain and choroid plexus than at earlier ages. Chronic treatment upregulated certain transcripts only in adult brain and altered concentrations of paracetamol metabolites in circulation of pregnant dams. Combination of changes to metabolites and transport system transcripts may explain observed changes in paracetamol entry into adult and fetal brains. Analysis of lower paracetamol dosing (3.75 mg/kg) indicated dose-dependent changes in paracetamol metabolism. Transcripts of ABC transporters and enzymes at key barriers responsible for molecular transport into the developing brain showed alterations in paracetamol pharmacokinetics in pregnancy following different treatment regimens.
format	article
author	L. M. Koehn Y. Huang M. D. Habgood S. Nie S. Y. Chiou R. B. Banati K. M. Dziegielewska N. R. Saunders
author_facet	L. M. Koehn Y. Huang M. D. Habgood S. Nie S. Y. Chiou R. B. Banati K. M. Dziegielewska N. R. Saunders
author_sort	L. M. Koehn
title	Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
title_short	Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
title_full	Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
title_fullStr	Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
title_full_unstemmed	Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
title_sort	efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/90f3d5e87469441d9a47fd8649e0a6c9
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Efflux transporters in rat placenta and developing brain: transcriptomic and functional response to paracetamol

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