Abstract：
:In this study we investigated the effect of splenectomy in combination with cyclosporine (CsA) on survival of heterotopic cardiac xenografts from hamster to rat. A 12-fold prolongation of mean cardiac xenograft survival, to 41 days, was accomplished with the combined therapy. In both untreated controls and CsA-treated recipients rejection occurred in 3 days. Splenectomy by itself prolonged xenograft function to 5 days. Evidence of humoral-mediated rejection in this cross-species combination was given for the extensive thrombosis and hemorrhage in the subepicardial area, the appearance of lymphocytotoxic titers just before graft function ceased, and the presence of IgM deposits in subepicardial vessels of the xenograft. CsA by itself could not modify this pattern of rejection. Splenectomy decreased antibody formation significantly and rejection became more cellular in nature. The regimen of splenectomy in association with CsA suppressed antibody titers and produced a CsA dose-dependent prolongation of xenograft survival. Thus, a complementary or synergistic effect is the result of the immunosuppressive regimen of splenectomy and CsA in hamster-to-rat cardiac xenografts. In this study the effect of splenectomy in controlling the humoral response in concordant xenografts and its role in future clinical xenografting is emphasized.
journal_name
Surgeryjournal_title
Surgeryauthors
Monden M,Valdivia LA,Gotoh M,Kubota N,Hasuike Y,Nakano Y,Okamura J,Mori Tsubject
Has Abstractpub_date
1989-04-01 00:00:00pages
535-42issue
4eissn
0039-6060issn
1532-7361journal_volume
105pub_type
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