PMID- 32448653 OWN - NLM STAT- MEDLINE DCOM- 20201229 LR - 20201229 IS - 1873-2623 (Electronic) IS - 0041-1345 (Linking) VI - 52 IP - 8 DP - 2020 Oct TI - Angiotensin II Type 1 Receptor Expression in Renal Transplant Biopsies and Anti-AT1R Antibodies in Serum Indicates the Risk of Transplant Loss. PG - 2299-2304 LID - S0041-1345(19)31845-7 [pii] LID - 10.1016/j.transproceed.2020.01.126 [doi] AB - The manifestation of anti-angiotensin II type 1 receptor (AT1R) antibodies is considered a risk factor for transplant injury; however, the occurrence of angiotensin II type 1 (AT1)-Receptor expression in renal transplant biopsy may help to predict transplant loss. The aim of our study was to evaluate the expression of AT1-Receptors together with their antibodies and assess the risk of transplant loss in patients who had a renal transplant indication biopsy. METHODS: AT1-Receptor immunoreactivity was analyzed in renal transplant biopsies. Additionally, we analyzed the presence of anti-AT1R antibodies in these patients using the enzyme-linked immunosorbent assay (ELISA) method. A result >/= 10 was assessed as positive. An immunohistochemical evaluation of AT1-Receptor expression was performed on 4 mum-thick paraffin sections mounted on salinized slides. RESULTS: We checked 156 samples of biopsies for the immunoreactivity of the AT1-Receptor. Additionally, we analyzed the presence of anti-AT1R antibodies in these patients using the ELISA method. A group of 67 patients had positive AT1-Receptor expression, and 16 patients had positive anti-AT1R antibodies (R+Ab+) results. A group of 89 patients had no expression of AT1-Receptor, among which 51 had also no anti-AT1R (R-Ab-). One-year postbiopsy graft loss in the R+Ab+ patients was 37% (6/16) compared to 10% (7/69) in the R-Ab- patients (P = .006). Two-year and 3-year graft loss was 43% versus 17% and 50% versus 21%, respectively. CONCLUSIONS: The presence of anti-AT1R antibodies in serum together with the expression of AT1-Receptor in transplant biopsies was associated with a significantly higher graft loss. The relevance of AT1-Receptor expression analyzed together with anti-AT1R antibodies should be considered for better transplant immunologic risk assessment. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Sas-Strozik, Agnieszka AU - Sas-Strozik A AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. Electronic address: a_sas@op.pl. FAU - Donizy, Piotr AU - Donizy P AD - Department of Pathomorphology and Oncological Cytology, Wroclaw Medical University, Wroclaw, Poland. FAU - Koscielska-Kasprzak, Katarzyna AU - Koscielska-Kasprzak K AD - Research Laboratory, Wroclaw Medical University, Wroclaw, Poland. FAU - Kaminska, Dorota AU - Kaminska D AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. FAU - Gawlik, Kamila AU - Gawlik K AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. FAU - Mazanowska, Oktawia AU - Mazanowska O AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. FAU - Madziarska, Katarzyna AU - Madziarska K AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. FAU - Halon, Agnieszka AU - Halon A AD - Department of Pathomorphology and Oncological Cytology, Wroclaw Medical University, Wroclaw, Poland. FAU - Krajewska, Magdalena AU - Krajewska M AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. FAU - Banasik, Miroslaw AU - Banasik M AD - Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland. LA - eng PT - Journal Article DEP - 20200521 PL - United States TA - Transplant Proc JT - Transplantation proceedings JID - 0243532 RN - 0 (Autoantibodies) RN - 0 (Receptor, Angiotensin, Type 1) SB - IM MH - Adult MH - Autoantibodies/*blood/immunology MH - Biopsy MH - Female MH - Graft Rejection/*immunology MH - Humans MH - *Kidney Transplantation/adverse effects MH - Male MH - Middle Aged MH - Receptor, Angiotensin, Type 1/*immunology MH - Risk Assessment MH - Transplants/immunology EDAT- 2020/05/26 06:00 MHDA- 2020/12/30 06:00 CRDT- 2020/05/26 06:00 PHST- 2020/01/02 00:00 [received] PHST- 2020/01/26 00:00 [accepted] PHST- 2020/05/26 06:00 [pubmed] PHST- 2020/12/30 06:00 [medline] PHST- 2020/05/26 06:00 [entrez] AID - S0041-1345(19)31845-7 [pii] AID - 10.1016/j.transproceed.2020.01.126 [doi] PST - ppublish SO - Transplant Proc. 2020 Oct;52(8):2299-2304. doi: 10.1016/j.transproceed.2020.01.126. Epub 2020 May 21.