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Cartilage Produced After Transplantation of Syngeneic Chondrocytes Is Rejected in Rats Presensitized With Allogeneic Chondrocytes

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Cartilage produced in 2-week-old intramuscular transplants of syngeneic chondrocytes in rats did not display any signs of rejection. Cartilage produced by similar transplants in animals presensitized with intramuscular transplants of allogeneic chondrocytes was surrounded by infiltrations composed mainly of lymphocytes and was partially resorbed. Spleen mononuclear cells (SMC) from recipients of syngeneic transplants alone were not stimulated in mixed splenocyte–chondrocyte cultures by syngeneic or allogeneic chondrocytes. SMC from recipients of allogeneic and subsequent syngeneic transplants were strongly stimulated by both syngeneic and allogeneic chondrocytes, although stimulation by the latter was significantly more pronounced. Sera from naive rats usually contained cytotoxic antichondrocyte antibodies but their level varied considerably in various individuals. In rats chosen as transplant recipients on the basis of low antichondrocyte cytotoxicity of their sera, this toxicity was markedly raised after sensitization with allo- and syngeneic chondrocytes. Absorption with thymocytes or fibroblasts decreased but did not abrogate cytotoxicity. These observations support previous reports suggesting expression of tissue-specific antigen(s) by chondrocytes.

Keywords: Key words: Chondrocyte transplantation; Syngeneic

Document Type: Research Article


Affiliations: Department of Histology and Embryology, Medical University of Warsaw, Pl-02004 Warsaw, Poland

Publication date: 2001-01-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.
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