title: In vitro and in vivo evaluation of albumin synthesis rate of porcine hepatocytes in a flat-plate bioreactor.
abstract: Several configurations of extracorporeal bioartificial liver devices have been developed for the potential treatment of fulminant hepatic failure or as a bridge to liver transplantation. Recently, we developed a microchannel flat-plate bioreactor with an internal membrane oxygenator in which porcine hepatocytes are cultured as a monolayer on the bottom glass surface. In the present study, we investigated synthetic function of porcine hepatocytes in the bioreactor in both in vitro and in vivo flow circuit models. In vitro, albumin synthesis was stable in the bioreactor for up to 4 days of perfusion. In vivo, with the extracorporeal connection of the bioreactor to rat vasculature, porcine albumin was detectable for 24 h in the rat plasma. We also developed a simple mathematical model to predict the in vivo porcine albumin concentration in rat plasma. These results indicate that this configuration of a microchannel flat-plate bioreactor has potential as a liver support device and warrants further investigation.
authors.affiliation: Center for Engineering in Medicine and Surgical Services, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, U.S.A.
authors.forename: M
authors.initials: M
authors.lastname: Shito
authors.forename: N H
authors.initials: NH
authors.lastname: Kim
authors.forename: H
authors.initials: H
authors.lastname: Baskaran
authors.forename: A W
authors.initials: AW
authors.lastname: Tilles
authors.forename: R G
authors.initials: RG
authors.lastname: Tompkins
authors.forename: M L
authors.initials: ML
authors.lastname: Yarmush
authors.forename: M
authors.initials: M
authors.lastname: Toner
mesh_terms: D000418:Albumins / Q000378:metabolism* / Q000494:pharmacology*; D000818:Animals; D019149:Bioreactors; D002478:Cells, Cultured; D022781:Hepatocytes / Q000378:metabolism*; D066298:In Vitro Techniques; D019164:Liver, Artificial; D008297:Male; D023421:Models, Animal; D008962:Models, Theoretical; D010477:Perfusion; D011237:Predictive Value of Tests; D051381:Rats; D017207:Rats, Sprague-Dawley; D012680:Sensitivity and Specificity; D013552:Swine
chemical_list: D000418:Albumins