PMID- 31155175 OWN - NLM STAT- MEDLINE DCOM- 20190715 LR - 20190715 IS - 1873-2623 (Electronic) IS - 0041-1345 (Linking) VI - 51 IP - 5 DP - 2019 Jun TI - Detection of Intragraft Anti-Blood Group A and B Antibodies Following Renal Transplantation. PG - 1371-1377 LID - S0041-1345(18)31440-4 [pii] LID - 10.1016/j.transproceed.2019.01.128 [doi] AB - BACKGROUND: Graft immunocomplex capture fluorescence analysis is an attractive method to detect intragraft donor-specific anti-HLA antibodies. In ABO-incompatible transplantation, anti-A and B antibodies are also considered to be important donor specific antibodies (ABO-DSA). Therefore, it is useful to monitor intragraft ABO-DSAs to assess antibody-mediated rejection. METHODS: To capture A and B antigens, anti-Band III, von Willebrand factor (VW), and plasmalemma vesicle-associated protein (PLVAP) beads were produced. The allograft specimen was homogenized in a lysis buffer. Subsequently, A and B antigens were captured by anti-Band III, VW, or PLVAP beads. The immune complexes were then detected by phycoerythrin-conjugated anti-human IgG antibodies and analyzed using a Luminex system. RESULTS: Although Band III and VW beads yielded false positives and false negatives, PLVAP beads captured A and B antigens with high sensitivity (91.7%) and specificity (100%) when an index > 1.5 was considered positive. The proximity in A and B antigens and PLVAP expression was confirmed using immunohistochemical evaluation. Furthermore, sodium dodecyl sulfate polyacrylamide gel electrophoresis supported that PLVAP is an A and B antigen carrier protein. CASE REPORT: Biopsies were conducted following an ABO-incompatible renal transplant (type A to O) and evaluated for ABO-DSA. Graft immunocomplex capture fluorescence analysis was demonstrated as follows: 3.19 (1 h, serum creatinine [s-Cr] 3.95 mg/dL, titer IgG 1:512, glomerulitis [g] 0, peritubular capillaritis [ptc] 0, complement 4d [C4d] 1); 1.8 (4 d, s-Cr 2.29 mg/dL, titer 1:256, g 0, ptc 0, C4d 3); 1.2 (22 d, s-Cr 1.58 mg/dL, titer 1:128, g 0, ptc 2, C4d 3). This result indicated that the remnant ABO-DSA were adsorbed and subsequently removed from the allograft successfully. CONCLUSIONS: This novel application could be used to detect intragraft ABO-DSAs, which could lead to a correct diagnosis and shed light on the ABO-DSA kinetics following ABO-incompatible transplantation. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Nakamura, Tsukasa AU - Nakamura T AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. Electronic address: tsukasa@koto.kpu-m.ac.jp. FAU - Shirouzu, Takayuki AU - Shirouzu T AD - Wakunaga Pharmaceutical Co, Ltd, Molecular Diagnostics Division, Osaka, Japan. FAU - Kawai, Shintaro AU - Kawai S AD - Wakunaga Pharmaceutical Co, Ltd, Molecular Diagnostics Division, Osaka, Japan. FAU - Imanishi, Yui AU - Imanishi Y AD - Department of Blood Transfusion and Cell Therapy, Kyoto Prefectural University of Medicine, Kyoto, Japan. FAU - Matsuyama, Takehisa AU - Matsuyama T AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. FAU - Harada, Shumpei AU - Harada S AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. FAU - Nobori, Shuji AU - Nobori S AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. FAU - Yoshimura, Norio AU - Yoshimura N AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. FAU - Ushigome, Hidetaka AU - Ushigome H AD - Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Kajii-cho 465, Kamigyo-ku, Kyoto-prefecture, Japan. LA - eng PT - Journal Article PL - United States TA - Transplant Proc JT - Transplantation proceedings JID - 0243532 RN - 0 (Blood Group Antigens) RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) SB - IM MH - Adult MH - Biopsy MH - Blood Group Antigens/*analysis MH - Female MH - Fluorescent Antibody Technique/*methods MH - Graft Rejection/*immunology MH - HLA Antigens/immunology MH - Humans MH - Isoantibodies/*analysis MH - *Kidney Transplantation MH - Male MH - Tissue Donors MH - Transplantation, Homologous EDAT- 2019/06/04 06:00 MHDA- 2019/07/16 06:00 CRDT- 2019/06/04 06:00 PHST- 2018/11/08 00:00 [received] PHST- 2019/01/04 00:00 [accepted] PHST- 2019/06/04 06:00 [entrez] PHST- 2019/06/04 06:00 [pubmed] PHST- 2019/07/16 06:00 [medline] AID - S0041-1345(18)31440-4 [pii] AID - 10.1016/j.transproceed.2019.01.128 [doi] PST - ppublish SO - Transplant Proc. 2019 Jun;51(5):1371-1377. doi: 10.1016/j.transproceed.2019.01.128.