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Research ArticleArticle

Effect of Human Liver Source on the Functionality of Isolated Hepatocytes and Liver Slices

Peter Olinga, Marjolijn Merema, Ingrid H. Hof, Koert P. de Jong, Maarten J. H. Slooff, Dirk K. F. Meijer and Geny M. M. Groothuis
Drug Metabolism and Disposition January 1998, 26 (1) 5-11;
Peter Olinga
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Marjolijn Merema
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Ingrid H. Hof
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Koert P. de Jong
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Maarten J. H. Slooff
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Dirk K. F. Meijer
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Geny M. M. Groothuis
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Abstract

In vitro experiments using human liver tissue to study drug metabolism and transport are usually performed and interpreted without real consideration of the differences in procurement of the tissue, if it is obtained from different sources. Therefore, in this study the functionality of isolated hepatocytes and liver slices prepared either from healthy human liver tissue obtained from patients undergoing partial hepatectomy [livers from partial hepatectomy (PH-livers)] or from donor tissue remaining after reduced-size or split-liver transplantation [livers from transplantation (Tx-livers)] was compared. From each liver sample, both liver slices and hepatocytes were prepared and compared with respect to viability and drug disposition. The viability of hepatocytes was assessed by trypan blue exclusion, ATP content, and energy charge and that of liver slices by potassium retention. In both preparations phase I metabolism was studied using lidocaine and testosterone as substrates, whereas phase I and II metabolism was assessed with 7-ethoxycoumarin. The membrane transport capability of the hepatocytes was investigated by measuring the uptake of taurocholic acid. The hepatocytes from PH-livers and Tx-livers showed similar viabilities and functional capacities. Metabolism in cells and slices from Tx-livers was found to be quantitatively comparable. However, liver slices from PH-livers showed a significantly lower metabolic capacity, compared with cells from the same tissue. This may indicate that only some of the hepatocytes in the liver slices from PH-livers participate in the metabolism of the compounds studied and that a selection of healthy cells takes place during isolation of the hepatocytes. Our results imply that hepatocytes isolated from Tx-livers and PH-livers can be used in the same study without consideration of the procurement of the tissue. However, the procurement of the tissue may significantly influence the functions of liver slices; the liver slices prepared from PH-livers showed significantly lower metabolic function, compared with slices prepared from Tx-livers.

Footnotes

  • Send reprint requests to: P. Olinga, Department of Pharmacokinetics and Drug Delivery, University Centre for Pharmacy, Ant. Deusinglaan 1, 9713 AV Groningen, The Netherlands.

  • This study was supported by grants from the Alternatives to Animal Experiments Platform, Organon International BV, and Solvay Duphar BV. The experiments were performed in cooperation with the Human Liver Group, Groningen.

  • ↵2 Olinga P, Merema MT, Hof IH, Visser J, Meijer DKF and Groothuis GMM. Fast analysis of ATP, ADP, AMP and adenosine with gradient ion-pair reversed-phase liquid chromatography as viability test for hepatocytes. Submitted for publication.

  • ↵3 Olinga P, Merema MT, Sandker GW, Slooff MJH, Meijer DKF and Groothuis GMM. Uptake of taurocholic acid in human hepatocytes isolated from livers of donors of different ages. Submitted for publication.

  • ↵4 Olinga P, unpublished data.

  • Abbreviations used are::
    PH-liver
    liver from partial hepatectomy
    Tx-liver
    liver from transplantation
    UW solution
    University of Wisconsin organ preservation solution
    7-EC
    7-ethoxycoumarin
    7-HC
    7-hydroxycoumarin
    MEGX
    monoethylglycinexylidide
    KHB
    Krebs-Henseleit buffer
    HBSS
    Hanks’ balanced salt solution
    BSA
    bovine serum albumin
    • Received January 31, 1997.
    • Accepted September 23, 1997.
  • The American Society for Pharmacology and Experimental Therapeutics
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Drug Metabolism and Disposition
Vol. 26, Issue 1
1 Jan 1998
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Research ArticleArticle

Effect of Human Liver Source on the Functionality of Isolated Hepatocytes and Liver Slices

Peter Olinga, Marjolijn Merema, Ingrid H. Hof, Koert P. de Jong, Maarten J. H. Slooff, Dirk K. F. Meijer and Geny M. M. Groothuis
Drug Metabolism and Disposition January 1, 1998, 26 (1) 5-11;

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Research ArticleArticle

Effect of Human Liver Source on the Functionality of Isolated Hepatocytes and Liver Slices

Peter Olinga, Marjolijn Merema, Ingrid H. Hof, Koert P. de Jong, Maarten J. H. Slooff, Dirk K. F. Meijer and Geny M. M. Groothuis
Drug Metabolism and Disposition January 1, 1998, 26 (1) 5-11;
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