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dc.contributor.authorNedredal, Geir Ivar
dc.contributor.authorElvevold, Kjetil Helge
dc.contributor.authorChedid, MF
dc.contributor.authorYtrebø, Lars Marius
dc.contributor.authorRose, CF
dc.contributor.authorSen, S
dc.contributor.authorSmedsrød, Bård
dc.contributor.authorJalan, R
dc.contributor.authorRevhaug, Arthur
dc.date.accessioned2022-04-26T08:37:55Z
dc.date.available2022-04-26T08:37:55Z
dc.date.issued2019-05-30
dc.description.abstractBackground. Pulmonary complications are common in acute liver failure (ALF). The role of the lungs in the uptake of harmful soluble endogenous macromolecules was evaluated in a porcine model of ALF induced by hepatic devascularization (n = 8) vs. controls (n = 8). In additional experiments, pulmonary uptake was investigated in healthy pigs. Fluorochrome-labeled modified albumin (MA) was applied to investigate the cellular uptake.<p> <p>Results. As compared to controls, the ALF group displayed a 4-fold net increased lung uptake of hyaluronan, and 5-fold net increased uptake of both tissue plasminogen activator and lysosomal enzymes. Anatomical distribution experiments in healthy animals revealed that radiolabeled MA uptake (taken up by the same receptor as hyaluronan) was 53% by the liver, and 24% by the lungs. The lung uptake of LPS was 14% whereas 60% remained in the blood. Both fluorescence and electron microscopy revealed initial uptake of MA by pulmonary endothelial cells (PECs) with later translocation to pulmonary intravascular macrophages (PIMs). Moreover, the presence of PIMs was evident 10 min after injection. Systemic inflammatory markers such as leukopenia and increased serum TNF-α levels were evident after 20 min in the MA and LPS groups.<p> <p>Conclusion. Significant lung uptake of harmful soluble macromolecules compensated for the defect liver scavenger function in the ALF-group. Infusion of MA induced increased TNF-α serum levels and leukopenia, similar to the effect of the known inflammatory mediator LPS. These observations suggest a potential mechanism that may contribute to lung damage secondary to liver disease.en_US
dc.identifier.citationNedredal GI, Elvevold kh, Chedid, Ytrebø LM, Rose C, Sen S, Smedsrød b, Jalan R, Revhaug A. Pulmonary vascular clearance of harmful endogenous macromolecules in a porcine model of acute liver failure. Annals of Hepatology. 2016;15(3):427-435en_US
dc.identifier.cristinIDFRIDAID 1419336
dc.identifier.doi10.5604/16652681.1198821
dc.identifier.issn1665-2681
dc.identifier.urihttps://hdl.handle.net/10037/24885
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalAnnals of Hepatology
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2019 Fundación Clínica Médica Sur, A.Cen_US
dc.titlePulmonary vascular clearance of harmful endogenous macromolecules in a porcine model of acute liver failureen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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