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Engraftment and Function of Intrasplenically Transplanted Cold Stored Rat Hepatocytes

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Hepatocellular transplant may potentially be efficacious for the treatment of selected liver metabolic disorders and acute hepatic failure. On the other hand, the use of hepatocyte cold preservation techniques in these transplantation protocols would allow to have available cells at the right time and place and, consequently, make an optimal use of scarce human hepatocytes. In our experiments we evaluated the biodistribution and functionality of cold preserved hepatocytes transplanted in the spleen of syngeneic rats. Isolated hepatocytes were labeled with the fluorescent dye 5(6)-carboxyfluorescein diacetate succinimidyl-ester, cold-preserved in modified University of Wisconsin (UW) solution for 48 or 96 h, and then transplanted into the spleen. Recipient animals were euthanized at 0 and 3 h, and at 1, 2, 3, 5, 10, and 14 days after transplantation for tissue analysis. Labeled hepatocytes were clearly identifiable in the recipient tissues up to 14 days later. Fluorescence microscopy also showed no significant differences in biodistribution when either cold stored or freshly isolated hepatocytes were transplanted. In addition, functional activity of transplanted cells was demonstrated by immunohistochemical detection of albumin at levels comparable to those found in normal hepatocytes. Our findings establish that cold preserved hepatocytes appear morphologically and biochemically normal after intrasplenic transplantation. Consequently, it indicates that modified UW solution makes it possible to safety preserve hepatocytes for up to 96 h before transplantation, perhaps providing sufficient time for hepatocyte allocation and potential recipient preparation, if applicable clinically.
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Keywords: Hepat; Key words: University of Wisconsin solution

Document Type: Research Article

Affiliations: 1: *Biología Molecular, Dto. Cs. Biológicas, Facultad de Cs. Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario 2: †Farmacología, Dto. Cs. Fisiológicas, Facultad de Cs. Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario 3: ‡Morfología, Dto. Cs. Biológicas, Facultad de Cs. Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario

Publication date: 2002-02-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

    Cell Transplantation is now being published by SAGE. Please visit their website for the most recent issues.

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