Prolonged Survival Following Pig-to-Primate Liver Xenotransplantation Utilizing Exogenous Coagulation Factors and Costimulation Blockade

被引:109
|
作者
Shah, J. A. [1 ]
Patel, M. S. [1 ]
Elias, N. [1 ]
Navarro-Alvarez, N. [1 ]
Rosales, I. [1 ]
Wilkinson, R. A. [1 ]
Louras, N. J. [1 ]
Hertl, M. [1 ]
Fishman, J. A. [1 ]
Colvin, R. B. [1 ]
Cosimi, A. B. [1 ]
Markmann, J. F. [1 ]
Sachs, D. H. [1 ]
Vagefi, P. A. [1 ]
机构
[1] Harvard Med Sch, Massachusetts Gen Hosp, Ctr Transplantat Sci, Boston, MA 02115 USA
关键词
PORCINE CYTOMEGALOVIRUS; KNOCKOUT SWINE; TRANSPLANTATION; COAGULOPATHY; XENOGRAFTS; EXPERIENCE; BARRIERS; GRAFTS; MODEL;
D O I
10.1111/ajt.14341
中图分类号
R61 [外科手术学];
学科分类号
摘要
Since the first attempt of pig-to-primate liver xenotransplantation (LXT) in 1968, survival has been limited. We evaluated a model utilizing alpha-1,3-galactosyltransferase knockout donors, continuous post-transplant infusion of human prothrombin concentrate complex, and immunosuppression including anti-thymocyte globulin, FK-506, methylprednisone, and costimulation blockade (belatacept, n = 3 or anti-CD40 mAb, n = 1) to extend survival. Baboon 1 remained well until postoperative day (POD) 25, when euthanasia was required because of cholestasis and plantar ulcers. Baboon 2 was euthanized following a seizure on POD 5, despite normal liver function tests (LFTs) and no apparent pathology. Baboon 3 demonstrated initial stable liver function but was euthanized on POD 8 because of worsening LFTs. Pathology revealed C4d positivity, extensive hemorrhagic necrosis, and a focal cytomegalovirus inclusion. Baboon 4 was clinically well with stable LFTs until POD29, when euthanasia was again necessitated by plantar ulcerations and rising LFTs. Final pathology was C4d negative and without evidence of rejection, inflammation, or thrombotic microangiopathy. Thus, nearly 1-mo rejection-free survival has been achieved following LXT in two of four consecutive recipients, demonstrating that the porcine liver can support life in primates for several weeks and has encouraging potential for clinical application as a bridge to allotransplantation for patients with acuteon- chronic or fulminant hepatic failure.
引用
收藏
页码:2178 / 2185
页数:8
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