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• W4288458046 abstract "Patients awaiting solid organ transplantation may develop anti-HLA antibodies after sensitization events such as transfusions, pregnancies, or previous transplantations. However, the effects of a particular sensitization event on HLA alloimmunization have not been well studied in parallel using cell-based assays and solid-phase assays. In this study, we evaluated and compare how different sensitization events affect the HLA antibody screening (HLA-Ab) and donor specific antibody (DSA) status in solid renal organ transplantation patients.HLA antibody (HLA-Ab) screening tests like complement-dependent cytotoxicity crossmatch (CDC-XM), flow cytometry crossmatch (FC-XM) and Luminex panel-reactive antibody (L-PRA) were performed in all 1066 patients (635 males and 431 females). If any of these tests turned out to be positive, a Luminex single antigen bead (L-SAB) assay was performed for DSA identification. Test positive rates and antibody strengths were analyzed according to the different sensitization events and gender.In this study, HLA-Ab screening tests positive rates (L-PRA, FC-XM and CDC-XM) were significantly higher in patients with previous transplantation (73.91%, 100% and 56.52% p < 0.001), previous pregnancy (57.46%, 70.14% and 18.85% p < 0.001) or blood transfusion (27.33%, 35.55% and 7.33% p < 0.001) compared with patients without a sensitizing event (6.17%, 13.58% and 1.09). In this study, re-transplantation group showed significantly stronger antibody strength (DSA) than non sensitized group (class I and II MFI 11418.04, 17,837.78 vs class I and II MFI 2659, 3329; P < 0.001) and those with single sensitization events of transfusion (class I and II MFI 11418.04, 17,837.78 vs class I and II MFI 5790.26, 6004.16; P < 0.001) or pregnancy (class I & II MFI 11418, 17,837 vs class I and II MFI 8631.71, 7253.29; P < 0.001).Pregnancy and blood transfused had high allo-immunization rate for class I HLA antigens. While re-transplantation patients had high allo-immunization rate for both the HLA classes (HLA- class I and HLA- class II). Re-transplantation group showed significantly stronger antibody strength, followed by pregnancy and then transfusion." @default.
• W4288458046 created "2022-07-29" @default.
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• W4288458046 date "2022-12-01" @default.
• W4288458046 modified "2023-10-16" @default.
• W4288458046 title "Effects of different sensitization events on HLA alloimmunization in renal transplant cases; a retrospective observation in 1066 cases" @default.
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• W4288458046 doi "https://doi.org/10.1016/j.trim.2022.101680" @default.
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