Alloreactivity and immunosuppressive properties of articular chondrocytes from osteoarthritic cartilage.

edited and produced by Hong Kong University Press

PURPOSE:To determine whether articular chondrocytes derived from osteoarthritic knee joints could evoke alloreactive proliferation of peripheral blood mononuclear cells (PBMC) and inhibit mitogenic activity of polyclonally activated CD4+ major histocompatibility complex (MHC) class II- restricted T cells in vitro.METHODS:Osteoarthritic cartilages of 17 patients aged 61 to 85 years were harvested during total knee arthroplasty. Chondrocytes were cultured for experiments. PBMCs, CD4+ T cells, CD8+ T cells, and CD14+ monocytes from healthy subjects were also used. To investigate the allogeneic response and immunosuppressive properties of chondrocytes, assays for one-way mixed lymphocyte reaction (MLR), apoptosis, activated CD4+ T-cell proliferation, and cytotoxic CD8+ T-cells were performed. Chondrocyte cell-surface antigens were examined using flow cytometry.RESULTS:Chondrocytes failed to trigger an allogeneic PBMC reaction and did not induce apoptosis of allogeneic PBMCs in the MLR assay. Chondrocytes inhibited the proliferation of polyclonally activated CD4+ T cells via cell-cell contact and escaped the allogeneic cytotoxic reactivity of CD8+ T cells. Chondrocytes expressed MHC class I but not MHC class II molecules or B7-1/-2-positive co-stimulatory molecules.CONCLUSION:Chondrocytes from osteoarthritic knees in older patients exhibited similar immunomodulatory properties in vitro to those in juveniles or adults.;開始ページ : 232;終了ページ : 239

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書名 Alloreactivity and immunosuppressive properties of articular chondrocytes from osteoarthritic cartilage.
著作者等 Hong Kong University Press
Western Pacific Orthopaedic Association
阿部 里見
出版元 Hong Kong University Press
刊行年月 c1993-
ページ数 v.
大きさ 28 cm
ISSN 10225536
NCID AA11004541
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言語 英語
出版国 中華人民共和国
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