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  • Title: Therapeutic strategy and the role of apheresis therapy for ABO incompatible living donor liver transplantation.
    Author: Kozaki K, Egawa H, Kasahara M, Oike F, Yoshizawa A, Fukatsu A, Tanaka K.
    Journal: Ther Apher Dial; 2005 Aug; 9(4):285-91. PubMed ID: 16076368.
    Abstract:
    Although in Japan, transplant organs obtained from brain-dead donors (BDD) has been allowed since October 1997, to date only 27 liver grafts from BDD have been obtained. The severe shortage of transplantable organs is a big problem, not only in liver transplantation but also other organ transplants. Liver transplantation is a fundamental treatment for end-stage liver disease. In order to perform living-donor liver transplantation (LDLT) in a safer manner, apheresis (plasmapheresis) plays a major role in Japan because of the prevalence of LDLT wherein later re-transplantation is difficult. Therefore, because of a limited donor supply and because the need of patients with end-stage liver disease is critical, use of grafts from ABO-incompatible donors may be the only available option. From June 1990 to November 2004, 1010 patients underwent 1060 LDLT cases at Kyoto University Hospital. Of these, 139 LDLT cases (13.1%) received ABO-incompatible living-donor liver grafts. The role of apheresis in ABO-incompatible LDLT is the reduction of antibody titers such as anti-A or anti-B antibody. We perform preoperative apheresis as a general rule for incompatible cases, and the recipient's antibody level against the donor's blood type is decreased to one eighth of the baseline value before LDLT. Up to the present, baseline antirejection regimens included steroids, tacrolimus and cyclophosphamide. At first, splenectomy was performed during operation to suppress antibody production, and intraportal infusion therapy was performed to control local disseminated intravascular coagulation (DIC) occurring in ABO-incompatible grafts. At that time, three agents--methylprednisolone, prostaglandin E1, and gabexate mesilate--were infused continuously for 3 weeks after LDLT. At present, instead of intraportal infusion therapy, hepatic artery infusion therapy without splenectomy is adopted because of portal thrombosis, and two agents--methylprednisolone and prostaglandin E1--are infused continuously for 3 weeks after LDLT. Recently, we introduced an anti-CD20 monoclonal antibody (Rituximab) instead of splenectomy for B cell deletion before ABO-incompatible LDLT. In this article, we describe our therapeutic strategy and the role of apheresis around ABO-incompatible LDLT.
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