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Status: Bibliographieeintrag

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Verfasst von:Ghallab, Ahmed [VerfasserIn]   i
 Hassan, Reham [VerfasserIn]   i
 Hofmann, Ute [VerfasserIn]   i
 Friebel, Adrian [VerfasserIn]   i
 Hobloss, Zaynab [VerfasserIn]   i
 Brackhagen, Lisa [VerfasserIn]   i
 Begher-Tibbe, Brigitte [VerfasserIn]   i
 Myllys, Maiju [VerfasserIn]   i
 Reinders, Joerg [VerfasserIn]   i
 Overbeck, Nina [VerfasserIn]   i
 Sezgin, Selahaddin [VerfasserIn]   i
 Zühlke, Sebastian [VerfasserIn]   i
 Seddek, Abdel-latif [VerfasserIn]   i
 Murad, Walaa [VerfasserIn]   i
 Brecklinghaus, Tim [VerfasserIn]   i
 Kappenberg, Franziska [VerfasserIn]   i
 Rahnenführer, Jörg [VerfasserIn]   i
 González, Daniela [VerfasserIn]   i
 Goldring, Christopher [VerfasserIn]   i
 Copple, Ian M. [VerfasserIn]   i
 Marchan, Rosemarie [VerfasserIn]   i
 Longerich, Thomas [VerfasserIn]   i
 Vucur, Mihael [VerfasserIn]   i
 Luedde, Tom [VerfasserIn]   i
 Urban, Stephan [VerfasserIn]   i
 Canbay, Ali [VerfasserIn]   i
 Schreiter, Thomas [VerfasserIn]   i
 Trauner, Michael [VerfasserIn]   i
 Akakpo, Jephte Y. [VerfasserIn]   i
 Olyaee, Mojtaba [VerfasserIn]   i
 Curry, Steven C. [VerfasserIn]   i
 Sowa, Jan-Peter [VerfasserIn]   i
 Jaeschke, Hartmut [VerfasserIn]   i
 Hoehme, Stefan [VerfasserIn]   i
 Hengstler, Jan G. [VerfasserIn]   i
Titel:Interruption of bile acid uptake by hepatocytes after acetaminophen overdose ameliorates hepatotoxicity
Verf.angabe:Ahmed Ghallab, Reham Hassan, Ute Hofmann, Adrian Friebel, Zaynab Hobloss, Lisa Brackhagen, Brigitte Begher-Tibbe, Maiju Myllys, Joerg Reinders, Nina Overbeck, Selahaddin Sezgin, Sebastian Zühlke, Abdel-latif Seddek, Walaa Murad, Tim Brecklinghaus, Franziska Kappenberg, Jörg Rahnenführer, Daniela González, Christopher Goldring, Ian M. Copple, Rosemarie Marchan, Thomas Longerich, Mihael Vucur, Tom Luedde, Stephan Urban, Ali Canbay, Thomas Schreiter, Michael Trauner, Jephte Y. Akakpo, Mojtaba Olyaee, Steven C. Curry, Jan-Peter Sowa, Hartmut Jaeschke, Stefan Hoehme, Jan G. Hengstler
E-Jahr:2022
Jahr:5 February 2022
Umfang:13 S.
Fussnoten:Gesehen am 25.09.2022
Titel Quelle:Enthalten in: Journal of hepatology
Ort Quelle:Amsterdam [u.a.] : Elsevier Science, 1985
Jahr Quelle:2022
Band/Heft Quelle:77(2022), 1, Seite 71-83
ISSN Quelle:1600-0641
Abstract:Background & Aims - Acetaminophen (APAP) overdose remains a frequent cause of acute liver failure, which is generally accompanied by increased levels of serum bile acids (BAs). However, the pathophysiological role of BAs remains elusive. Herein, we investigated the role of BAs in APAP-induced hepatotoxicity. - Methods - We performed intravital imaging to investigate BA transport in mice, quantified endogenous BA concentrations in the serum of mice and patients with APAP overdose, analyzed liver tissue and bile by mass spectrometry and MALDI-mass spectrometry imaging, assessed the integrity of the blood-bile barrier and the role of oxidative stress by immunostaining of tight junction proteins and intravital imaging of fluorescent markers, identified the intracellular cytotoxic concentrations of BAs, and performed interventions to block BA uptake from blood into hepatocytes. - Results - Prior to the onset of cell death, APAP overdose causes massive oxidative stress in the pericentral lobular zone, which coincided with a breach of the blood-bile barrier. Consequently, BAs leak from the bile canaliculi into the sinusoidal blood, which is then followed by their uptake into hepatocytes via the basolateral membrane, their secretion into canaliculi and repeated cycling. This, what we termed ‘futile cycling’ of BAs, led to increased intracellular BA concentrations that were high enough to cause hepatocyte death. Importantly, however, the interruption of BA re-uptake by pharmacological NTCP blockage using Myrcludex B and Oatp knockout strongly reduced APAP-induced hepatotoxicity. - Conclusions - APAP overdose induces a breach of the blood-bile barrier which leads to futile BA cycling that causes hepatocyte death. Prevention of BA cycling may represent a therapeutic option after APAP intoxication. - Lay summary - Only one drug, N-acetylcysteine, is approved for the treatment of acetaminophen overdose and it is only effective when given within ∼8 hours after ingestion. We identified a mechanism by which acetaminophen overdose causes an increase in bile acid concentrations (to above toxic thresholds) in hepatocytes. Blocking this mechanism prevented acetaminophen-induced hepatotoxicity in mice and evidence from patients suggests that this therapy may be effective for longer periods after ingestion compared to N-acetylcysteine.
DOI:doi:10.1016/j.jhep.2022.01.020
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1016/j.jhep.2022.01.020
 Volltext: https://www.sciencedirect.com/science/article/pii/S0168827822000629
 DOI: https://doi.org/10.1016/j.jhep.2022.01.020
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:acute liver failure
 APAP
 blood-bile barrier
 intravital imaging
 tight junctions
K10plus-PPN:1817371118
Verknüpfungen:→ Zeitschrift

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