Characterization of patient antibodies after kidney transplantation.
A Slavcev, J Lácha, H Sajdlová, S Vítko, M Horcicková, I Stríz, E IvaskováAnn Transplant 2001; 6(2): 12-15 :: ID: 868397
Abstract
OBJECTIVE: The aim of this study was to characterize patient antibodies before and after cadaver and/or living-donor kidney transplantation and to correlate these data with the clinical course after transplantation. METHODS: Sera from 69 cadaver, 9 living-related and 2 patients waiting for living-donor kidney transplantation were analyzed by the complement dependent cytotoxicity (CDC) test, flow cytometry (FCXM) and ELISA. RESULTS: FCXM revealed that 15.0% of patients before transplantation and 16.7% after transplantation had antibodies to donor cells. 10.3% patients were positive before and after transplantation (+/+), while 6.8% developed antibodies early after transplantation (-/+). Analysis of the specificity of those antibodies by ELISA showed that it was directed to: 1) mismatched donor HLA antigens 2) antigens belonging to the same cross-reacting group (CREG) as the mismatched donor antigens 3) HLA antigens not expressed by donor cells or, probably, to non-HLA antigens. CONCLUSION: Anti-HLA antibodies were detected in patients before and after transplantation and in most cases their anti-HLA specificity could be determined. Fast and precise characterization of antibodies in patients before and after transplantation can be performed by both sensitive methods--FCXM and ELISA--which may help predict the onset of immunological complications and, consequently, improve the prognosis after organ transplantation.
Keywords: Tissue Donors
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