Rapid failure of pig islet transplantation in non human primates

被引:54
作者
Cantarovich, D
Blancho, G
Potiron, N
Jugeau, N
Fiche, M
Chagneau, C
Letessier, E
Boeffard, F
Loth, P
Karam, G
Soulillou, JP
Le Mauff, B
机构
[1] CHU Nantes, ITERT, INSERM, U437, F-44093 Nantes, France
[2] CHU Nantes, Inst Transplantat & Rech Transplantat, F-44035 Nantes 01, France
[3] CHU Nantes, Serv Anatomopathol, F-44035 Nantes 01, France
[4] CHU Nantes, Serv Chirurg Gen, F-44035 Nantes 01, France
[5] CHU Nantes, Serv Urol, F-44035 Nantes 01, France
关键词
islet; pig; primate; rejection; xenotransplantation;
D O I
10.1034/j.1399-3089.2002.0o144.x
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
We have previously demonstrated that adult pig islets of Langerhans are not destroyed in vitro by primate sera. Whether these islets can function when placed into the liver of non-human primates is not known. We now report on the outcome of pig islet xenotransplantation into five non diabetic primates (four baboons and one macacus fascicularis) receiving intraportally purified adult pig islets. The average number of islet-equivalent per graft was 110 000 (60 180 000). All animals received associations of ATG, cyclosporine or LF 195 (a deoxyspergualin analog), mycophenolate mofetil and corticosteroids. A specific porcine C-peptide (C-pep) RIA test was used to monitor insulin secretion. Two hours after grafting, porcine C-peptide was positive (from 0.37 to 4.25 ng/ml) in all monkeys except one. Primate C-pep was normal in all cases. Only two monkeys had detectable levels of porcine C-pep on day 1 or 2 with undetectable levels thereafter, even after glucagon challenge between days 6 and 10. Several normal islets with moderate inflammatory infiltration were observed in one animal liver on day 2 (the time of necropsy) as well as islets with IgM and complement deposition. Among animals sacrificed on days 14, 16 and 38, some residual islet cells could be identified only in livers collected on day 14. Partial glycaemic control was achieved in some rats receiving islets from the same preparations. In conclusion, adult pig islets are not able to maintain insulin secretion for more than 24 h when injected intraportally into non diabetic immunosuppressed monkeys, suggesting immediate islet xenograft destruction.
引用
收藏
页码:25 / 35
页数:11
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