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15 December 2004

Successful transplantation of hepatocytes requires temporary elimination of scavenger and NK cells, partial hepatectomy and ligation of bile duct

A Wesolowska, M Gewartowska, W L Olszewski, M Durlik

Ann Transplant 2004; 9(4): 40-42 :: ID: 13031

Abstract

Isolated syngeneic and allogeneic hepatocytes transplanted to spleen parenchyma are rapidly disintegrated. Host scavenger monocytes and
macrophages are responsible for this reaction. We designed a method overcoming early disintegration of the intra-splenic grafted hepatocytes. It consisted of administration of anti-asialoGM1 antiserum eliminating NK cells, sublethal whole body irradiation for depletion of scavenging cells and reconstitution with syngeneic bone marrow cells, ligation of host bile duct, intrasplenic hepatocyte transplantation and 3 consecutive partial hepatectomies. Six months after transplantation a glycogen-rich, trabeculae-forming, dividing hepatocytes, situated along strands of newly-formed fibrous tissue and numerous dilated blind bile canaliculae were observed. There was evidently more bile canaliculae in hosts with ligated bile duct than non-ligated controls. This is the first study showing fibrous tissue formed at the site of hepatocyte implantation and stellate cells are presumably responsible for this process.

Keywords: Hepatocytes, bile duct, Transplantation, Scavenger Cells

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Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358