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Control of IBMIR Induced by Fresh and Cryopreserved Hepatocytes by Low Molecular Weight Dextran Sulfate Versus Heparin
Uppsala University Hospital, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
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2017 (Engelska)Ingår i: Cell Transplantation, ISSN 0963-6897, E-ISSN 1555-3892, Vol. 26, nr 1, s. 71-81Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Rapid destruction of hepatocytes after hepatocyte transplantation has hampered the application of this procedure clinically. The instant blood-mediated inflammatory reaction (IBMIR) is a plausible underlying cause for this cell loss. The present study was designed to evaluate the capacity of low molecular weight dextran sulfate (LMW-DS) to control these initial reactions from the innate immune system. Fresh and cryopreserved hepatocytes were tested in an in vitro whole-blood model using ABO-compatible blood. The ability to elicit IBMIR and the capacity of LMW-DS (100 mu g/ml) to attenuate the degree of activation of the cascade systems were monitored. The effect was also compared to conventional anticoagulant therapy using unfractionated heparin (1 IU/ml). Both fresh and freeze thawed hepatocytes elicited IBMIR to the same extent. LMW-DS reduced the platelet loss and maintained the cell counts at the same degree as unfractionated heparin, but controlled the coagulation and complement systems significantly more efficiently than heparin. LMW-DS also attenuated the IBMIR elicited by freeze thawed cells. Therefore, LMW-DS inhibits the cascade systems and maintains the cell counts in blood triggered by both fresh and cryopreserved hepatocytes in direct contact with ABO-matched blood. LMW-DS at a previously used and clinically applicable concentration (100 mu g/ml) inhibits IBMIR in vitro and is therefore a potential IBMIR inhibitor in hepatocyte transplantation.

Ort, förlag, år, upplaga, sidor
Sage Publications, 2017. Vol. 26, nr 1, s. 71-81
Nyckelord [en]
Innate immunity, IBMIR, Thromboinflammation, Hepatocyte transplantation, Low molecular weight dextran sulfate (LMW-DS)
Nationell ämneskategori
Immunologi inom det medicinska området
Forskningsämne
Biomedicinsk vetenskap, Immunologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-61174DOI: 10.3727/096368916X692609ISI: 000392785000007Scopus ID: 2-s2.0-85010375324OAI: oai:DiVA.org:lnu-61174DiVA, id: diva2:1079475
Tillgänglig från: 2017-03-08 Skapad: 2017-03-08 Senast uppdaterad: 2019-09-06Bibliografiskt granskad

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Nilsson Ekdahl, Kristina

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