Abstract
Objective To analyze the clinical application of donor specific antibodies (DSAs) detected by a single antigen Luminex virtual crossmatch,and to discuss the treatment of DSA and the impact of DSA on renal function.Methods Serum from living-relative renal recipients before and after transplantation was investigated using a Luminex single antigen assay.The relation between DSA and renal acute rejection as well as renal function was analyzed.Results A total of 30 patients and 173 serum samples were tested,including 47 serum samples before transplantation,and 126 after transplantation.DSA was positive in one patient before transplantation,and 8 patients after transplantation.Three of the patients positive for DSA were treated by Bortezomib,3 by addition of MMF,2 by addition of CNI,1 by addition of Sirolimus.The MFI of DSA in one of the patients treated by Bortezomib was decreased to below 1000,while that in the other two decreased by more than 50 ％.The renal eGFR at the time with and without DSA was (1.50 ± 0.59) and (1.23 ± 0.38)ml/s respectively (P＜0.05).Conclusion Dynamic monitoring of single bead antigen antibody DSA conduces to direct the adjustment of immunosuppressant.The appearance of DSA contributes to the declination of renal function.Application of Bortezomib decreased the MFI of DSA. Key words: Kidney transplantation; DSA
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