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Liao T, Shi X, Han F, Wang Y, Zeng W, Liu R, Yan Z, Xia R, Huang Z, Xu J, Miao Y. Blockade of BLyS inhibits B-cell responses and antibody production for the prevention of chronic transplant rejection. J Heart Lung Transplant 2024; 43:652-662. [PMID: 38070662 DOI: 10.1016/j.healun.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 11/11/2023] [Accepted: 12/02/2023] [Indexed: 12/22/2023] Open
Abstract
BACKGROUND Chronic rejection, closely related to the activation of B cells and donor-specific antibody (DSA) production, has unsatisfactory therapeutic outcomes. B lymphocyte stimulator (BLyS) is a major regulatory factor that controls the activation and differentiation of B cells. However, it remains unclear whether BLyS blockade can regulate B and plasma cells in the transplantation setting and affect chronic rejection. Here, we investigated the efficacy of the BLyS inhibitors belimumab and telitacicept in controlling B-cell response and preventing chronic rejection. METHODS The effects of belimumab and telitacicept on B-cell activation, differentiation, and antibody production in vitro were determined. A chronic rejection model in mouse was established by allogeneic cardiac transplantation with CTLA4-Ig treatment. Allograft survival, histology, DSA levels, and B-cell responses were analyzed to evaluate the chronic rejection-preventive effects of belimumab and telitacicept. RESULTS In vitro experiments confirmed that belimumab and telitacicept inhibited B-cell activation and differentiation and reduced antibody production. In vivo experiments indicated that they significantly prolonged allograft survival, attenuated chronic rejection through significant suppression of myocardial ischemic necrosis and interstitial fibrosis, and reduced DSA-IgG levels, C4d deposition, and inflammatory cell infiltration. Furthermore, the frequencies of B cells, plasma cells, and IgG-producing cells in the recipients' spleen, lymph nodes, bone marrow, and blood were decreased after BLyS inhibitors treatment. CONCLUSIONS This study demonstrated that belimumab and telitacicept inhibit B-cell responses and antibody production and alleviate chronic transplant rejection. Therefore, BLyS inhibitors are expected to be used for the prevention of chronic rejection in clinical practice.
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Affiliation(s)
- Tao Liao
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiaoyi Shi
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Fei Han
- Research Institute of Organ Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yuchen Wang
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wenli Zeng
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Rumin Liu
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ziyan Yan
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Renfei Xia
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhengyu Huang
- Research Institute of Organ Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jian Xu
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yun Miao
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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2
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Han F, Shi X, Liao T, Zhang W, Ma M, Leng Q, Jiang W, Na N, Miao Y, Huang Z. Bruton's tyrosine kinase ablation inhibits B cell responses and antibody production for the prevention of chronic rejection in cardiac transplantation. Clin Immunol 2024; 261:109941. [PMID: 38365047 DOI: 10.1016/j.clim.2024.109941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 02/12/2024] [Indexed: 02/18/2024]
Abstract
Chronic rejection is the primary cause of late allograft failure, however, the current treatments for chronic rejection have not yielded desirable therapeutic effects. B cell activation and donor-specific antibody (DSA) production are the primary factors leading to chronic rejection. Bruton's tyrosine kinase (BTK) plays a key role in the activation and differentiation of B cells and in antibody production. This study investigated the efficacy of blocking BTK signalling in the prevention of chronic rejection. BTK signalling was blocked using the BTK inhibitor ibrutinib and gene knockout. In vitro assays were conducted to examine the consequences and underlying mechanisms of BTK blockade in regards to B cell activation, differentiation, and antibody secretion. Additionally, we established a cardiac transplantation mouse model of chronic rejection to explore the preventive effects and mechanisms of BTK ablation on chronic rejection. Ablating BTK signalling in vitro resulted in the inhibition of B cell activation, differentiation, and antibody production. In vivo experiments provided evidence that ablating BTK signalling alleviated chronic rejection, leading to reduced damage in myocardial tissue, neointimal hyperplasia, interstitial fibrosis, inflammatory cell infiltration, and C4d deposition. Allograft survival was prolonged, and B cell responses and DSA production were inhibited as a result. We confirmed that ablation of BTK signalling inhibited B cell response by blocking downstream PLCγ2 phosphorylation and inhibiting the NF-κB, NFAT, and ERK pathways. Our findings demonstrated that ablation of BTK signalling inhibited B cell activation and differentiation, reduced DSA production, and effectively prevented chronic rejection.
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Affiliation(s)
- Fei Han
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaoyi Shi
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Tao Liao
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wei Zhang
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Maolin Ma
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qianghua Leng
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Weichen Jiang
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ning Na
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yun Miao
- Department of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Zhengyu Huang
- Organ Transplantation Research Institution, Division of Kidney Transplantation, Department of Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China.
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3
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Pottebaum AA, January SE, Liu C, Lavine S, Schilling JD, Lavine KJ. Feasibility of Interleukin-6 Receptor Blockade in Cardiac Antibody-mediated Rejection. Transplantation 2024; 108:539-544. [PMID: 37638881 PMCID: PMC10798586 DOI: 10.1097/tp.0000000000004784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 06/15/2023] [Accepted: 06/28/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Antibody-mediated rejection (AMR) remains a significant cause of heart transplant mortality with few effective therapies. METHODS This study aimed to describe initial experience of using interleukin-6 receptor blockade with tocilizumab in the treatment of acute cardiac AMR at Barnes-Jewish Hospital/Washington University Transplant Center from July 2017 to May 2021 (n = 7). Clinical, echocardiographic, and serum alloantibody data were analyzed before and after treatment. RESULTS All participants demonstrated marked improvement in functional status. Echocardiographic data following 4-6 mo of tocilizumab revealed significant improvements in biventricular systolic function for all participants. Consistent reductions in donor-specific HLA or angiotensin type I receptor antibodies were not observed, suggesting that tocilizumab may act downstream of antibody production. No patient experienced drug-related complications that necessitated discontinuation of therapy. CONCLUSIONS These findings provide initial insights into the safety and efficacy of interleukin-6 receptor blockade in the treatment of cardiac AMR and support the design of larger prospective studies.
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Affiliation(s)
| | | | - Chang Liu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Steven Lavine
- Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Joel D Schilling
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Kory J Lavine
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
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4
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Goldberg JF, Truby LK, Agbor-Enoh S, Jackson AM, deFilippi CR, Khush KK, Shah P. Selection and Interpretation of Molecular Diagnostics in Heart Transplantation. Circulation 2023; 148:679-694. [PMID: 37603604 PMCID: PMC10449361 DOI: 10.1161/circulationaha.123.062847] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
The number of heart transplants performed annually in the United States and worldwide continues to increase, but there has been little change in graft longevity and patient survival over the past 2 decades. The reference standard for diagnosis of acute cellular and antibody-mediated rejection includes histologic and immunofluorescence evaluation of endomyocardial biopsy samples, despite invasiveness and high interrater variability for grading histologic rejection. Circulating biomarkers and molecular diagnostics have shown substantial predictive value in rejection monitoring, and emerging data support their use in diagnosing other posttransplant complications. The use of genomic (cell-free DNA), transcriptomic (mRNA and microRNA profiling), and proteomic (protein expression quantitation) methodologies in diagnosis of these posttransplant outcomes has been evaluated with varying levels of evidence. In parallel, growing knowledge about the genetically mediated immune response leading to rejection (immunogenetics) has enhanced understanding of antibody-mediated rejection, associated graft dysfunction, and death. Antibodies to donor human leukocyte antigens and the technology available to evaluate these antibodies continues to evolve. This review aims to provide an overview of biomarker and immunologic tests used to diagnose posttransplant complications. This includes a discussion of pediatric heart transplantation and the disparate rates of rejection and death experienced by Black patients receiving a heart transplant. This review describes diagnostic modalities that are available and used after transplant and the landscape of future investigations needed to enhance patient outcomes after heart transplantation.
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Affiliation(s)
- Jason F Goldberg
- Department of Heart Failure and Transplantation, Inova Heart and Vascular Institute, Falls Church, VA (J.F.G., C.R.d., P.S.)
- Department of Pediatrics, Inova L.J. Murphy Children's Hospital, Falls Church, VA (J.F.G.)
| | - Lauren K Truby
- Department of Medicine, University of Texas Southwestern, Dallas (L.K.T.)
| | - Sean Agbor-Enoh
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD (S.A.-E.)
- Applied Precision Genomics, National Heart, Lung and Blood Institute, Bethesda, MD (S.A.-E.)
| | - Annette M Jackson
- Department of Surgery, Duke University School of Medicine, Durham, NC (A.M.J.)
| | - Christopher R deFilippi
- Department of Heart Failure and Transplantation, Inova Heart and Vascular Institute, Falls Church, VA (J.F.G., C.R.d., P.S.)
| | - Kiran K Khush
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, CA (K.K.K.)
| | - Palak Shah
- Department of Heart Failure and Transplantation, Inova Heart and Vascular Institute, Falls Church, VA (J.F.G., C.R.d., P.S.)
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5
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Saldan A, Mengoli C, Sgarabotto D, Fedrigo M, Angelini A, Feltrin G, Gambino A, Gerosa G, Barzon L, Abate D. Human cytomegalovirus and Epstein-Barr virus infections occurring early after transplantation are risk factors for antibody-mediated rejection in heart transplant recipients. Front Immunol 2023; 14:1171197. [PMID: 37256129 PMCID: PMC10225529 DOI: 10.3389/fimmu.2023.1171197] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/25/2023] [Indexed: 06/01/2023] Open
Abstract
Background Antibody-mediated rejection (AMR) is a serious complication affecting the survival of patients receiving transplantation. Human cytomegalovirus (CMV) and Epstein-Barr virus (EBV) are common viral infections that occur after transplantation, frequently emerging as viral reactivation in donor grafts or transplant recipients. The present study aimed to investigate the association between CMV and EBV infections and early-onset AMR. Materials and methods This study was conducted at the Heart Transplantation Center of Padova General Hospital and included a cohort of 47 heart transplant recipients (HTxs), including 24 HTxs diagnosed with AMR and 23 control HTxs with no episodes of AMR. Only early cases of CMV and/or EBV infections (1-90 days after transplantation) were considered. Fisher's exact test and logistic regression analysis were used to statistically analyze the correlation and association between AMR and CMV or EBV infection. Results We observed a positive statistical association between CMV and EBV infections (two-sided Fisher's exact test, p = 0.0136) and between EBV infection and AMR (two-sided Fisher's exact test, p = 0.0034). Logistic regression analysis revealed a direct statistical association between CMV and EBV infections and AMR risk (p = 0.037 and 0.006 and odds ratio = 1.72 and 2.19, respectively). AMR occurrence was associated with increased viral loads of both CMV and EBV early after transplantation. Discussion These findings suggest the role of CMV and EBV infections as relevant risk factors for AMR in HTxs for the first time.
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Affiliation(s)
- Alda Saldan
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Carlo Mengoli
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Dino Sgarabotto
- Transplant Infectious Disease Unit, Padova General Hospital, Padova, Italy
| | - Marny Fedrigo
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Annalisa Angelini
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | | | - Antonio Gambino
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Gino Gerosa
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Luisa Barzon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Davide Abate
- Department of Molecular Medicine, University of Padova, Padova, Italy
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6
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Miller CL, Madsen JC. Targeting IL-6 to prevent cardiac allograft rejection. Am J Transplant 2022; 22 Suppl 4:12-17. [PMID: 36453706 PMCID: PMC10191185 DOI: 10.1111/ajt.17206] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/28/2022] [Accepted: 10/04/2022] [Indexed: 12/05/2022]
Abstract
Outcomes following heart transplantation remain suboptimal with acute and chronic rejection being major contributors to poor long-term survival. IL-6 is increasingly recognized as a critical pro-inflammatory cytokine involved in allograft injury and has been shown to play a key role in regulating the inflammatory and alloimmune responses following heart transplantation. Therapies that inhibit IL-6 signaling have emerged as promising strategies to prevent allograft rejection. Here, we review experimental and pre-clinical evidence that supports the potential use of IL-6 signaling blockade to improve outcomes in heart transplant recipients.
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Affiliation(s)
- Cynthia L. Miller
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Joren C. Madsen
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, Massachusetts, USA
- Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA
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7
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A Review of Biomarkers of Cardiac Allograft Rejection: Toward an Integrated Diagnosis of Rejection. Biomolecules 2022; 12:biom12081135. [PMID: 36009029 PMCID: PMC9405997 DOI: 10.3390/biom12081135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 12/22/2022] Open
Abstract
Despite major advances in immunosuppression, allograft rejection remains an important complication after heart transplantation, and it is associated with increased morbidity and mortality. The gold standard invasive strategy to monitor and diagnose cardiac allograft rejection, based on the pathologic evaluation of endomyocardial biopsies, suffers from many limitations including the low prevalence of rejection, sample bias, high inter-observer variability, and international working formulations based on arbitrary cut-offs that simplify the landscape of rejection. The development of innovative diagnostic and prognostic strategies—integrating conventional histology, molecular profiling of allograft biopsy, and the discovery of new tissue or circulating biomarkers—is one of the major challenges of translational medicine in solid organ transplantation, and particularly in heart transplantation. Major advances in the field of biomarkers of rejection have paved the way for a paradigm shift in the monitoring and diagnosis of cardiac allograft rejection. We review the recent developments in the field, including non-invasive biomarkers to minimize the number of protocol endomyocardial biopsies and tissue biomarkers as companion tools of pathology to refine the diagnosis of cardiac rejection. Finally, we discuss the potential role of these biomarkers to provide an integrated bio-histomolecular diagnosis of cardiac allograft rejection.
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8
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Assessing the Relationship Between Molecular Rejection and Parenchymal Injury in Heart Transplant Biopsies. Transplantation 2022; 106:2205-2216. [PMID: 35968995 DOI: 10.1097/tp.0000000000004231] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND The INTERHEART study (ClinicalTrials.gov #NCT02670408) used genome-wide microarrays to detect rejection in endomyocardial biopsies; however, many heart transplants with no rejection have late dysfunction and impaired survival. We used the microarray measurements to develop a molecular classification of parenchymal injury. METHODS In 1320 endomyocardial biopsies from 645 patients previously studied for rejection-associated transcripts, we measured the expression of 10 injury-induced transcript sets: 5 induced by recent injury; 2 reflecting macrophage infiltration; 2 normal heart transcript sets; and immunoglobulin transcripts, which correlate with time. We used archetypal clustering to assign injury groups. RESULTS Injury transcript sets correlated with impaired function. Archetypal clustering based on the expression of injury transcript sets assigned each biopsy to 1 of 5 injury groups: 87 Severe-injury, 221 Late-injury, and 3 with lesser degrees of injury, 376 No-injury, 526 Mild-injury, and 110 Moderate-injury. Severe-injury had extensive loss of normal transcripts (dedifferentiation) and increase in macrophage and injury-induced transcripts. Late-injury was characterized by high immunoglobulin transcript expression. In Severe- and Late-injury, function was depressed, and short-term graft failure was increased, even in hearts with no rejection. T cell-mediated rejection almost always had parenchymal injury, and 85% had Severe- or Late-injury. In contrast, early antibody-mediated rejection (ABMR) had little injury, but late ABMR often had the Late-injury state. CONCLUSION Characterizing heart transplants for their injury state provides new understanding of dysfunction and outcomes and demonstrates the differential impact of T cell-mediated rejection versus ABMR on the parenchyma. Slow deterioration from ABMR emerges as a major contributor to late dysfunction.
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9
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Nair N. Vascular rejection in cardiac allograft vasculopathy: Impact on graft survival. Front Cardiovasc Med 2022; 9:919036. [PMID: 35990962 PMCID: PMC9386065 DOI: 10.3389/fcvm.2022.919036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/14/2022] [Indexed: 11/24/2022] Open
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10
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Mascaro J. Trasplante cardíaco: estado actual. REVISTA MÉDICA CLÍNICA LAS CONDES 2022. [DOI: 10.1016/j.rmclc.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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11
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Costa C, Amador AF, Calvão J, Pinto R, Pereira PR, Torres JP, Amorim S, Macedo F. Late Cardiac Antibody-Mediated Rejection: A Only Heart Duel. INTERNATIONAL JOURNAL OF HEART FAILURE 2022; 4:117-121. [PMID: 36263105 PMCID: PMC9383344 DOI: 10.36628/ijhf.2021.0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 03/13/2022] [Accepted: 03/16/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Catarina Costa
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
| | - Ana Filipa Amador
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
| | - João Calvão
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
| | - Roberto Pinto
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
- University of Porto, Faculty of Medicine, Porto, Portugal
| | - Pedro Rodrigues Pereira
- Department of Pathology, Centro Hospitalar São João, and University of Porto, Faculty of Medicine, Porto, Portugal
| | - José Pinheiro Torres
- Department of Cardio-Thoracic Surgery, Centro Hospitalar São João, Porto, Portugal
| | - Sandra Amorim
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
- University of Porto, Faculty of Medicine, Porto, Portugal
| | - Filipe Macedo
- Department of Cardiology, Centro Hospitalar São João, Porto, Portugal
- University of Porto, Faculty of Medicine, Porto, Portugal
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12
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Yerly P, Rotman S, Regamey J, Aubert V, Aur S, Kirsch M, Hullin R, Pascual M. Complement blockade with eculizumab to treat acute symptomatic humoral rejection after heart transplantation. Xenotransplantation 2022; 29:e12726. [PMID: 35001433 PMCID: PMC9285545 DOI: 10.1111/xen.12726] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/23/2021] [Accepted: 12/17/2021] [Indexed: 12/12/2022]
Abstract
Antibody‐mediated rejection (AMR) is a major barrier preventing successful discordant organ xenotransplantation, but it also occurs in allotransplantation due to anti‐HLA antibodies. Symptomatic acute AMR is rare after heart allograft but carries a high risk of mortality, especially >1 year after transplant. As complement activation may play a major role in mediating tissue injury in acute AMR, drugs blocking the terminal complement cascade like eculizumab may be useful, particularly since “standards of care” like plasmapheresis are not based on strong evidence. Eculizumab was successfully used to treat early acute kidney AMR, a typical condition of “active AMR,” but showed mitigated results in late AMR, where “chronic active” lesions are more prevalent. Here, we report the case of a heart recipient who presented with acute heart failure due to late acute AMR with eight de novo donor‐specific anti‐HLA antibodies (DSA), and who fully recovered allograft function and completely cleared DSA following plasmapheresis‐free upfront eculizumab administration in addition to thymoglobulin, intravenous immunoglobulins (IVIG), and rituximab. Several clinical (acute onset, abrupt and severe loss of graft function), biological (sudden high‐level production of DSA), and pathological features (microvascular injury, C4d deposits) of this cardiac recipient are shared with early kidney AMR and may indicate a strong role of complement in the pathogenesis of acute graft injury that may respond to drugs like eculizumab. Terminal complement blockade should be further explored to treat acute AMR in recipients of heart allografts and possibly also in recipients of discordant xenografts in the future.
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Affiliation(s)
- Patrick Yerly
- Service of Cardiology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Samuel Rotman
- Service of Clinical Pathology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Julien Regamey
- Service of Cardiology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Vincent Aubert
- Service of Immunology and Allergology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Stefania Aur
- Service of Cardiology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Matthias Kirsch
- Service of Cardiac Surgery, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Roger Hullin
- Service of Cardiology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Manuel Pascual
- Center for Organ Transplantation, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
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13
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Correlation Between Microvascular Inflammation in Endomyocardial Biopsies and Rejection Transcripts, Donor-specific Antibodies, and Graft Dysfunction in Antibody-mediated Rejection. Transplantation 2021; 106:1455-1464. [DOI: 10.1097/tp.0000000000004008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Mantell BS, Cordero H, See SB, Clerkin KJ, Vasilescu R, Marboe CC, Naka Y, Restaino S, Colombo PC, Addonizio LJ, Farr MA, Zorn E. Transcriptomic heterogeneity of antibody mediated rejection after heart transplant with or without donor specific antibodies. J Heart Lung Transplant 2021; 40:1472-1480. [PMID: 34420852 PMCID: PMC8571048 DOI: 10.1016/j.healun.2021.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Antibody mediated rejection (AMR) is an increasingly studied cause of graft failure after heart transplantation. AMR diagnosis previously required the detection of circulating donor specific antibodies (DSA); however, the most recent criteria only require pathological findings. This classification defined a subset of patients with AMR, yet without known antibodies. Here, we sought to evaluate differences in the transcriptome profile associated with different types of AMR. METHODS RNA sequencing was used on endomyocardial biopsies to analyze and compare transcriptomic profiles associated with different subtypes of AMR defined by immunopathological and histopathological findings, as well as the presence or absence of DSA. Gene expression profiles were characterized for each diagnostic group. RESULTS The most divergent gene expression profiles were observed between patients with or without DSA. AMR subtypes associated with DSA showed expression of signature genes involved in monocyte activation and response to interferon. There was also substantial difference between the transcriptomic profiles of AMR defined by histopathological and immunopathological findings, the latter being associated with expression of mucin genes. In contrast, there was no differential RNA expression between patients with pAMR1i without DSA and those without AMR. Likewise, no differential expression was observed between patients with pAMR1h with DSA and pAMR2. CONCLUSIONS Overall, our studies reveal different expression profiles in endomyocardial biopsies in relation to some key criteria used to diagnose AMR. These findings support the view that the diagnosis of AMR encompasses several phenotypes that may rely on distinct mechanisms of injury.
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Affiliation(s)
- Benjamin S Mantell
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York; Department of Pediatrics, Division of Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - Hector Cordero
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Sarah B See
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Kevin J Clerkin
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Rodica Vasilescu
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Charles C Marboe
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Yoshifumi Naka
- Department of Surgery, Division of Cardiothoracic Surgery, Columbia University Medical Center, New York, New York
| | - Susan Restaino
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Paolo C Colombo
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Linda J Addonizio
- Department of Pediatrics, Division of Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - Maryjane A Farr
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Emmanuel Zorn
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York.
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15
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Ma M, Sun Q, Li X, Deng G, Zhang Y, Yang Z, Han F, Huang Z, Fang Y, Liao T, Sun Q. Blockade of IL-6/IL-6R Signaling Attenuates Acute Antibody-Mediated Rejection in a Mouse Cardiac Transplantation Model. Front Immunol 2021; 12:778359. [PMID: 34777394 PMCID: PMC8581398 DOI: 10.3389/fimmu.2021.778359] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/18/2021] [Indexed: 11/13/2022] Open
Abstract
Acute antibody-mediated rejection (AAMR) is an important cause of cardiac allograft dysfunction, and more effective strategies need to be explored to improve allograft prognosis. Interleukin (IL)-6/IL-6R signaling plays a key role in the activation of immune cells including B cells, T cells and macrophages, which participate in the progression of AAMR. In this study, we investigated the effect of IL-6/IL-6R signaling blockade on the prevention of AAMR in a mouse model. We established a mouse model of AAMR for cardiac transplantation via presensitization of skin grafts and addition of cyclosporin A, and sequentially analyzed its features. Tocilizumab, anti-IL-6R antibody, and recipient IL-6 knockout were used to block IL-6/IL-6R signaling. We demonstrated that blockade of IL-6/IL-6R signaling significantly attenuated allograft injury and improved survival. Further mechanistic research revealed that signaling blockade decreased B cells in circulation, spleens, and allografts, thus inhibiting donor-specific antibody production and complement activation. Moreover, macrophage, T cell, and pro-inflammatory cytokine infiltration in allografts was also reduced. Collectively, we provided a highly practical mouse model of AAMR and demonstrated that blockade of IL-6/IL-6R signaling markedly alleviated AAMR, which is expected to provide a superior option for the treatment of AAMR in clinic.
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Affiliation(s)
- Maolin Ma
- Organ Transplantation Research Institute, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qipeng Sun
- Department of Kidney Transplantation, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Xiujie Li
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Gengguo Deng
- Organ Transplantation Research Institute, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yannan Zhang
- Department of Kidney Transplantation, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Zhe Yang
- Organ Transplantation Research Institute, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Fei Han
- Organ Transplantation Research Institute, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhengyu Huang
- Organ Transplantation Research Institute, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Youqiang Fang
- Department of Urology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tao Liao
- Department of Kidney Transplantation, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Qiquan Sun
- Department of Kidney Transplantation, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
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16
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Ciarka A, Cordeiro F, Droogne W, Van Cleemput J, Voigt JU. Speckle-tracking-based global longitudinal and circumferential strain detect early signs of antibody-mediated rejection in heart transplant patients. Eur Heart J Cardiovasc Imaging 2021; 23:1520-1529. [PMID: 34687539 DOI: 10.1093/ehjci/jeab212] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS Acute rejection is an important cause of mortality after heart transplant (HTx), but symptoms develop only when myocardial damage is already extensive. We sought to investigate if echocardiographic parameters can detect and predict an acute cellular rejection (ACR) or antibody-mediated rejection (AMR) episode in HTx patients. METHODS AND RESULTS Data of 403 consecutive HTx recipients between 2003 and 2020 from our centre were reviewed. Patients with severe ACR (n = 10) and AMR (n = 7) were identified. Each HTx patient presenting with rejection was matched to a control HTx patient. Echocardiographic variables from the moment of rejection and 3, 6, and 12 months before were analysed and compared among groups. At acute rejection episode, patients with rejection had lower values of global longitudinal strain (GLS), global circumferential strain (GCS), and left ventricular ejection fraction (LVEF) compared to controls. HTx patients with AMR showed a progressive decline of GLS and GCS in the months preceding acute rejection, while controls and ACR patients had stable strain values except for the moment of rejection. In our cohort, a GLS cut-off lower than 15.5% and a GCS cut-off lower than 15.2% could distinguish with a sensitivity and specificity of 100.0% AMR from controls 3 months before rejection. LVEF and other conventional echo parameters could not differentiate among groups. CONCLUSION GLS and GCS show a progressive decrease months before AMR becomes clinically apparent. Our data suggest that global strain assessment by echocardiography allows an early detection of a developing AMR, which could improve the clinical management of HTx patients.
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Affiliation(s)
- Agnieszka Ciarka
- Department of Cardiovascular Diseases, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.,Department of Civilisation Diseases and Regeneration Medicine, University of Information Technology and Management, Sucharskiego 2, 35-225 Rzeszow, Poland.,Department of Cardiovascular Sciences, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Filipa Cordeiro
- Department of Cardiovascular Diseases, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Walter Droogne
- Department of Cardiovascular Diseases, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Johan Van Cleemput
- Department of Cardiovascular Diseases, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.,Department of Cardiovascular Sciences, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Jens-Uwe Voigt
- Department of Cardiovascular Diseases, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.,Department of Cardiovascular Sciences, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
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17
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Immohr MB, Akhyari P, Aubin H, Westenfeld R, Mehdiani A, Bruno RR, Sipahi NF, Erbel-Khurtsidze S, Reinecke P, Tudorache I, Lichtenberg A, Boeken U. Treatment of donor-specific antibody-mediated rejection after heart transplantation by IgM-enriched human immunoglobulin. ESC Heart Fail 2021; 8:3413-3417. [PMID: 33969938 PMCID: PMC8318410 DOI: 10.1002/ehf2.13409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/07/2021] [Accepted: 04/24/2021] [Indexed: 12/25/2022] Open
Abstract
Antibody‐mediated graft rejection caused by donor‐specific antibodies (DSA‐MR) remains a serious problem after heart transplantation (HTx). IgM‐enriched human intravenous immunoglobulin (IGM‐IVIG) consists of 76% IgG, 12% IgM, and 12% IgA and provides a new multifactorial approach for DSA‐MR. Between 2017 and 2020, four (P1–4) of 102 patients developed DSA‐MR after HTx in our department and were repetitively treated with IGM‐IVIG in combination with anti‐thymocyte globulin. While in P1 and P4, DSA‐MR occurred within the early post‐operative interval, P2 and P3 developed DSA‐MR approximately 1 year after transplantation. An impairment of ventricular function was observed in three of four patients. Furthermore, P1 and P4 suffered from malign ventricular arrhythmias. After the application of IGM‐IVIG, the ventricular function recovered, and all patients could be discharged from the hospital. As part of a multifactorial therapeutic approach, treatment with IGM‐IVIG seems to be a safe and effective strategy to address DSA‐MR.
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Affiliation(s)
- Moritz Benjamin Immohr
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Payam Akhyari
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Hug Aubin
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Ralf Westenfeld
- Department of Cardiology, Pulmonology and Vascular Medicine, Heinrich-Heine-University Medical School, Duesseldorf, Germany
| | - Arash Mehdiani
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Raphael Romano Bruno
- Department of Cardiology, Pulmonology and Vascular Medicine, Heinrich-Heine-University Medical School, Duesseldorf, Germany
| | - Nihat Firat Sipahi
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Sophiko Erbel-Khurtsidze
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Petra Reinecke
- Institute of Pathology, Heinrich-Heine-University Medical School, Duesseldorf, Germany
| | - Igor Tudorache
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Artur Lichtenberg
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
| | - Udo Boeken
- Department of Cardiac Surgery, Medical Faculty, Heinrich-Heine-University Medical School, Moorenstraße 5, Duesseldorf, 40225, Germany
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18
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Xie CB, Zhou J, Mackay S, Pober JS. Complement-activated human endothelial cells stimulate increased polyfunctionality in alloreactive T cells. Am J Transplant 2021; 21:1902-1909. [PMID: 33415805 PMCID: PMC8096653 DOI: 10.1111/ajt.16485] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/07/2020] [Accepted: 12/30/2020] [Indexed: 01/25/2023]
Abstract
Antibody-mediated deposition of complement membrane attack complexes (MACs) on IFN-γ-primed human endothelial cells (ECs) triggers autocrine/paracrine IL-1β-mediated EC activation and IL-15 transpresentation to alloreactive effector memory T cells (TEM ), changes that enable ECs to increase T cell proliferation and cytokine release. Here, we report the use of single-cell microchip 32-plex proteomics to more deeply assess the functionality of the activated T cells and dependence upon EC-derived signals. Compared to control ECs, MAC-activated human ECs increase both the frequency and degree of polyfunctionality among both CD4+ and CD8+ -proliferated TEM , assessed as secreted proteins. IFN-γ and TNF-α remain the predominant cytokines made by alloreactive TEM , but a few CD4+ TEM also made IL-4 while more CD8+ TEM made perforin and granzyme B. Increased polyfunctionality was attenuated by treatment of the MAC-activated ECs with anti-IL-15 blocking antibody more effectively than IL-1 receptor blockade. The increased polyfunctionality of T cells resulting from interactions with MAC-activated ECs may further link binding of donor-specific antibody to T cell-mediated allograft pathologies.
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Affiliation(s)
- Catherine B. Xie
- Dept of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Jing Zhou
- IsoPlexis Corporation, Branford, CT, USA
| | | | - Jordan S. Pober
- Dept of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
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19
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Sisson TM, Padilla LA, Hubbard M, Smith S, Pearce FB, Collins JL, Carlo WF. Impact of induction strategy change on first-year rejection in pediatric heart transplantation at a single center-From postoperative basiliximab to either postoperative anti-thymocyte globulin or preoperative basiliximab. Clin Transplant 2021; 35:e14314. [PMID: 33838071 DOI: 10.1111/ctr.14314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/27/2020] [Accepted: 03/29/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Our pediatric heart transplant center transitioned from post-bypass basiliximab (BAS) induction to either anti-thymocyte globulin (ATG) or pre-bypass BAS. The purpose of this study was to compare first-year rejection rates before and after this change. METHODS A single-center retrospective analysis was conducted of pediatric heart transplant recipients from 2010 to 2019. Primary outcome was first-year rejection. Bivariate analysis, Kaplan-Meier curves, and multivariable regression were performed across eras. RESULTS Forty-three early era patients (55%) received post-bypass BAS, and 35 late era patients (45%) received pre-bypass BAS (n = 17) or ATG (n = 18). First-year rejection decreased in the late era (31% vs 53%, p = .05). This finding was more pronounced after excluding infants (38% vs 73%, p = .006). Late era was associated with a decreased likelihood of rejection (all cohort OR 0.19, 95% CI 0.05-0.66; infants excluded OR 0.17, 95% CI 0.04-0.61). No differences in post-transplant lymphoproliferative disease, donor-specific antibody, or infection were observed. CONCLUSIONS Fewer late era patients receiving ATG or pre-bypass BAS induction had first-year rejection compared to the early era patients receiving standard post-bypass BAS induction. This programmatic shift in induction strategy was readily achievable and potentially effective in reducing first-year rejection.
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Affiliation(s)
| | - Luz A Padilla
- Division of Cardiothoracic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Sally Smith
- Children's of Alabama Heart Transplant Program, Birmingham, AL, USA
| | - Frank Bennett Pearce
- Children's of Alabama Heart Transplant Program, Birmingham, AL, USA.,Department of Pediatrics, University of Alabama Birmingham, Birmingham, AL, USA
| | - Jacqueline Leslie Collins
- Children's of Alabama Heart Transplant Program, Birmingham, AL, USA.,Department of Pediatrics, University of Alabama Birmingham, Birmingham, AL, USA
| | - Waldemar F Carlo
- Children's of Alabama Heart Transplant Program, Birmingham, AL, USA.,Department of Pediatrics, University of Alabama Birmingham, Birmingham, AL, USA
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20
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The Association Between Cytomegalovirus Infection and Cardiac Allograft Vasculopathy in the Era of Antiviral Valganciclovir Prophylaxis. Transplantation 2020; 104:1508-1518. [PMID: 31644496 PMCID: PMC7306257 DOI: 10.1097/tp.0000000000003015] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Supplemental Digital Content is available in the text. Previous studies on the association between cytomegalovirus (CMV) infection and cardiac allograft vasculopathy (CAV) were conducted on patients transplanted in the prevalganciclovir prophylaxis era. The aim of our study is to evaluate this relation in heart transplantation (HTx) recipients treated according to current prophylactic and immunosuppressive regimens.
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21
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Non-invasive cardiac allograft rejection surveillance: reliability and clinical value for prevention of heart failure. Heart Fail Rev 2020; 26:319-336. [PMID: 32889634 DOI: 10.1007/s10741-020-10023-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/31/2020] [Indexed: 01/04/2023]
Abstract
Allograft rejection-related acute and chronic heart failure (HF) is a major cause of death in heart transplant recipients. Given the deleterious impact of late recognized acute rejection (AR) or non-recognized asymptomatic antibody-mediated rejection on short- and long-term allograft function improvement of AR surveillance and optimization of action strategies for confirmed AR can prevent AR-related allograft failure and delay the development of cardiac allograft vasculopathy, which is the major cause for HF after the first posttransplant year. Routine non-invasive monitoring of cardiac function can improve both detection and functional severity grading of AR. It can also be helpful in guiding the anti-AR therapy and timing of routine surveillance endomyocardial biopsies (EMBs). The combined use of EMBs with non-invasive technologies and methods, which allow detection of subclinical alterations in myocardial function (e.g., tissue Doppler imaging and speckle-tracking echocardiography), reveal alloimmune activation (e.g., screening of complement-activating donor-specific antibodies and circulating donor-derived cell-free DNA) and help in predicting the imminent risk of immune-mediated injury (e.g., gene expression profiling, screening of non-HLA antibodies, and circulating donor-derived cell-free DNA), can ensure the best possible surveillance and management of AR. This article gives an overview of the current knowledge about the reliability and clinical value of non-invasive cardiac allograft AR surveillance. Particular attention is focused on the potential usefulness of non-invasive tools and techniques for detection and functional grading of early and late ARs in asymptomatic patients. Overall, the review aimed to provide a theoretical and practical basis for those engaged in this particularly demanding up-to-date topic.
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22
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Favorable Outcome of an Exclusively Posttransplant Prophylactic Strategy After Heart Transplantation in Recipients With High Immunological Risk. Transplantation 2020; 103:1439-1449. [PMID: 30376551 DOI: 10.1097/tp.0000000000002503] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Management of the increasing number of sensitized heart transplant candidates has become a recurrent issue. Rather than using pretransplant desensitization therapies, we used a posttransplant prophylactic strategy. Our aim was to describe outcomes in transplant recipients with preformed donor-specific anti-HLA antibodies (pfDSA) managed with this strategy. METHODS A posttransplant protocol was applied to patients transplanted with pfDSA, consisting of perioperative management of DSA (polyvalent immunoglobulins +/- perioperative plasmapheresis sessions, according to DSA level, as well as induction therapy) and systematic treatment of subsequent antibody-mediated rejection (AMR), even when subclinical. We performed a retrospective analysis of this prospective protocol. The study included all consecutive first recipients of a noncombined heart transplant performed between 2009 and 2015 at our center. The primary endpoint was all-cause mortality. Secondary endpoints included primary graft dysfunction, early posttransplant bleeding, rejection, and cardiac allograft vasculopathy-free survival. RESULTS A total of 523 patients were studied, including 88 (17%) and 194 (37%) transplanted with DSA mean fluorescence intensity (MFI) of 500 to 1000 and greater than 1000, respectively. The median follow-up period was 4.06 years. Survival was not significantly different between groups. Rejection-free survival was worse in patients with pfDSA MFI >1000, evidenced by a fourfold increase in the risk of antibody-mediated rejection. The incidence of primary graft dysfunction and cardiac allograft vasculopathy-free survival did not significantly differ between groups. Perioperative plasmapheresis increased the risk for transfusion of packed red blood cells. CONCLUSIONS This exclusively posttransplant prophylactic strategy achieved favorable outcomes in heart transplant recipients with pfDSA.
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23
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Dandel M, Hetzer R. Impact of rejection-related immune responses on the initiation and progression of cardiac allograft vasculopathy. Am Heart J 2020; 222:46-63. [PMID: 32018202 DOI: 10.1016/j.ahj.2019.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 12/22/2019] [Indexed: 12/17/2022]
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24
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The clinical impact of donor-specific antibodies on antibody-mediated rejection and long-term prognosis after heart transplantation. Curr Opin Organ Transplant 2020; 24:245-251. [PMID: 31090631 DOI: 10.1097/mot.0000000000000636] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE OF REVIEW Outcomes after cardiac transplantation have improved over past decades, but long-term graft survival remains limited in part because of uncertainty regarding clinical implications of donor-specific antibodies (DSAs). The purpose of this review is to consolidate recent advances in knowledge on the topic of DSA and their potential to impact long-term prognosis after heart transplantation. RECENT FINDINGS The presence of persistent DSA increases the risk of poor outcome after heart transplantation, including development of antibody-mediated rejection (AMR), graft failure, cardiac allograft vasculopathy, and mortality. Importantly, different DSA vary in clinical significance. DSA capable of activating the complement cascade portend a higher risk of developing AMR. human leukocyte antigen class I and class II antigens are expressed differently within the heart, and so, clinical manifestations of class I and class II DSA vary accordingly. Further, compared with class I, class II DSA carry an increased risk of graft loss and mortality. When comparing preexisting DSA with formation of de-novo DSA, de-novo DSA are associated with worse outcome. SUMMARY DSAs are generally associated worse long-term prognosis after heart transplantation but vary in their clinical significance. Recognition of specific risk profiles is essential for guiding posttransplant antibody management.
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25
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Abstract
PURPOSE OF REVIEW Antibody-mediated rejection (AMR) is a major contributor of impaired long-term survival after heart transplantation (HTx). The presence of circulating donor-specific antihuman leukocyte antigen (HLA) antibodies (DSAs) is considered as a mandatory criterion for AMR after HTx. DSA are known prognostic biomarkers of outcome, for example, recipients with de-novo DSA have a three-fold increased risk of mortality. RECENT FINDINGS Although the awareness of the impact and prognosis of DSA on the survival has been increased in the HTx community over the last decade, the management of DSA pre and posttransplant varies among centers and is mainly based on the experience of transplant physicians. Thus, firm consensus strategies for each HTx recipient should be established by a center advisory board of experts in the field of HLA genetics, transplantation immunology, and HTx to evaluate the immunological risk preoperatively and also continuously during the posttransplant course. Consequently, the recent advances of invasive and noninvasive diagnostic tools should be applied, according to the risk, laboratory findings, and clinical events of the recipient. Such individual strategy will result in tailored therapeutic options. SUMMARY Novel standards for the management of DSA in HTx recipients on the basis of an interdisciplinary approach of experts will improve diagnostics for personalized medicine.
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26
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Ludwig B, Schneider J, Föll D, Zhou Q. Antibody-mediated rejection with detection of de novo donor-specific anti-human leucocyte antigen Class II antibodies 3 years after heart transplantation: a case report. Eur Heart J Case Rep 2020; 4:1-4. [PMID: 32128488 PMCID: PMC7047055 DOI: 10.1093/ehjcr/ytz246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/16/2019] [Accepted: 12/19/2019] [Indexed: 11/22/2022]
Abstract
Background Antibody-mediated rejection (AMR) in cardiac transplantation may manifest early within the first weeks after transplantation but also late after months to years following transplantation resulting in mild heart failure to cardiogenic shock. While patients with early cardiac AMR are less affected and seem to have survival rates comparable to transplant recipients without AMR, late cardiac AMR is frequently associated with graft dysfunction, fulminant forms of cardiac allograft vasculopathy, and a high mortality rate. Nevertheless, AMR of cardiac allografts remains difficult to diagnose and to treat. Case summary We report the case of a 47-year-old male patient with late AMR of the cardiac allograft 3 years after heart transplantation. Antibody-mediated rejection was confirmed by endomyocardial biopsy and the presence of donor-specific antibodies (DSA). The patient was treated with high dose of prednisolone, plasmapheresis, intravenous Gamma Globulin, rituximab, immunoadsorption, and bortezomib. Under this treatment regimen left ventricular ejection fraction and pro B-type natriuretic peptide recovered, and the patient improved to New York Heart Association Class I. Currently, 3 years after the diagnosis of cardiac AMR, graft function continues to be nearly normal, and there is no evidence for transplant vasculopathy. Discussion This case illustrates that AMR can occur at any time after transplantation. Although graft function fully recovered after treatment in our patient, the level of DSA remained high, suggesting that DSA may not be a reliable parameter to determine the intensity and duration of the therapy.
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Affiliation(s)
- Bernd Ludwig
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany
| | - Johanna Schneider
- Department of Nephrology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Daniela Föll
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany
| | - Qian Zhou
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany
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27
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Miller C, Arkun K, DeNofrio D, Sabe M. Antibody-mediated rejection 16 years post-cardiac transplantation: a case report of an uncommon late presentation in a middle-aged woman. EUROPEAN HEART JOURNAL-CASE REPORTS 2019; 3:5542046. [PMID: 31365068 PMCID: PMC6764549 DOI: 10.1093/ehjcr/ytz100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/01/2019] [Accepted: 07/22/2019] [Indexed: 11/23/2022]
Abstract
Background Very late antibody-mediated rejection (AMR) in heart transplant patients (over 10 years post-transplant) is very rare. It is associated with high mortality, graft dysfunction, and fulminant coronary artery vasculopathy (CAV) and should remain in the differential for patients presenting with late graft dysfunction. Case summary A 57-year-old woman 16 years of post-heart transplant with a previously unremarkable post-transplant course including protocol driven biopsies showing no rejection and a recent unremarkable screening nuclear stress test presented to our institution with clinical heart failure. Echocardiogram revealed graft dysfunction and endomyocardial biopsy showed no signs of cellular rejection, but evidence of AMR. The patient was treated with steroid and immunotherapy with clinical improvement but suffered several infectious complications and renal dysfunction requiring haemodialysis related to her immunotherapy treatment. Despite aggressive AMR management, donor-specific antibodies and symptoms persisted and CAV progressed. Discussion This case illustrates the poor diagnostic yield of non-invasive testing for AMR, and highlights importance to clinicians of considering AMR even if the patient over 10 years post-transplant when the diagnosis is rare.
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Affiliation(s)
- Charles Miller
- Division of Cardiology, Tufts Medical Center, 800 Washington Street, Boston, MA, USA
| | - Knarik Arkun
- Department of Pathology, Tufts Medical Center, Boston, MA, USA
| | - David DeNofrio
- Division of Cardiology, Tufts Medical Center, 800 Washington Street, Boston, MA, USA
| | - Marwa Sabe
- Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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28
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The Effect of Obstructive Sleep Apnea on 3-Year Outcomes in Patients Who Underwent Orthotopic Heart Transplantation. Am J Cardiol 2019; 124:51-54. [PMID: 31029415 DOI: 10.1016/j.amjcard.2019.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/22/2019] [Accepted: 04/01/2019] [Indexed: 12/14/2022]
Abstract
Despite the well-known association between obstructive sleep apnea (OSA) and cardiovascular disease, there is a paucity of data regarding OSA in orthotopic heart transplant (OHT) recipients and its effect on clinical outcomes. Hence, we sought to determine the association between OSA, as detected by polysomnography, and late graft dysfunction (LGD) after OHT. In this retrospective review of consecutive OHT recipients from 2012 to 2014 at our center, we examined LGD, i.e., graft failure >1 year after OHT, through competing risks analysis. Due to small sample size and event counts, as well as preliminary testing which revealed statistically similar demographics and outcomes, we pooled patients who had treated OSA with those who had no OSA. Of 146 patients, 29 (20%) had untreated OSA, i.e., OSA without use of continuous positive airway pressure therapy, at the time of transplantation. Patients with untreated OSA were significantly older, heavier, and more likely to have baseline hypertension than those with treated/no OSA. Although there were no differences between groups in regard to short-term complications of acute kidney injury, cardiac allograft vasculopathy, or primary graft dysfunction, there were significant differences in the occurrence of LGD. Those with untreated OSA were at 3 times the risk of developing LGD than those with treated/no OSA (hazard ratio 3.2; 95% confidence interval 1.3 to 7.9; p = 0.01). Because OSA is a common co-morbidity of OHT patients and because patients with untreated OSA have an elevated risk of LGD, screening for and treating OSA should occur during the OHT selection period.
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Doumouras BS, Fan CS, Mueller B, Dipchand AI, Manlhiot C, Stehlik J, Ross HJ, Alba AC. The effect of pre–heart transplant body mass index on posttransplant outcomes: An analysis of the ISHLT Registry Data. Clin Transplant 2019; 33:e13621. [DOI: 10.1111/ctr.13621] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/25/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Barbara S. Doumouras
- Ted Rogers Centre for Heart Research, Peter Munk Cardiac Centre University Health Network, University of Toronto Toronto Ontario Canada
| | - Chun‐Po S. Fan
- Cardiovascular Data Management Centre, The Hospital for Sick Children University of Toronto Toronto Ontario Canada
| | - Brigitte Mueller
- Cardiovascular Data Management Centre, The Hospital for Sick Children University of Toronto Toronto Ontario Canada
| | - Anne I. Dipchand
- Labatt Family Heart Centre, The Hospital for Sick Children University of Toronto Toronto Ontario Canada
| | - Cedric Manlhiot
- Ted Rogers Centre for Heart Research, Peter Munk Cardiac Centre University Health Network, University of Toronto Toronto Ontario Canada
- Cardiovascular Data Management Centre, The Hospital for Sick Children University of Toronto Toronto Ontario Canada
| | - Josef Stehlik
- Division of Cardiovascular Medicine University of Utah Health Salt Lake City Utah USA
| | - Heather J. Ross
- Ted Rogers Centre for Heart Research, Peter Munk Cardiac Centre University Health Network, University of Toronto Toronto Ontario Canada
| | - Ana C. Alba
- Ted Rogers Centre for Heart Research, Peter Munk Cardiac Centre University Health Network, University of Toronto Toronto Ontario Canada
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Noninvasive and quantitative measurement of C4d deposition for the diagnosis of antibody-mediated cardiac allograft rejection. EBioMedicine 2018; 37:236-245. [PMID: 30385231 PMCID: PMC6286270 DOI: 10.1016/j.ebiom.2018.10.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/15/2018] [Accepted: 10/24/2018] [Indexed: 11/30/2022] Open
Abstract
Background C4d is a specific biomarker for the diagnosis of antibody-mediated rejection (AMR) after cardiac transplantation. Although strongly recommended, routine C4d surveillance is hindered by the invasive nature of endomyocardial biopsy. Targeted ultrasound (US) has high sensitivity, and C4d is abundantly expressed within the graft of patients experiencing AMR, which makes it possible to visualize C4d deposition in vivo using targeted US. Methods We designed a serial dilution of C4d-targeted microbubbles (MBC4d) using a streptavidin-biotin conjugation system. A rat model of AMR with C4d deposition was established by pre-sensitization with skin transplantation before cardiac transplantation. MBC4d were injected into recipients and then qualitatively and quantitatively analyzed using the destruction-replenishment method with a clinical US imaging system and analyzed by software. Findings We successfully obtained qualitative images of C4d deposition in a wide cardiac allograft section, which, for the first time, reflected real-time C4d distribution. Moreover, normal intensity difference was used for quantitative analysis and exhibited an almost nearly linear correlation with the grade of C4d deposition according to the pathologic evidence. In addition, MBC4d injection did not affect the survival and aggravate injury, which demonstrates its safety. Interpretation This study demonstrates a noninvasive, quantitative and safe evaluation method for C4d. As contrast-enhanced US has been widely used in clinical settings, this technology is expected to be applied quickly to clinical practice. Fund National Natural Science Foundation of China and Guangdong Province, Leading Scientific Talents of Guangdong special support program, the Science and Technology Project of Guangdong Province and Guangzhou City. C4d is a specific biomarker for the diagnosis of antibody-mediated rejection after cardiac transplantation. Although strongly recommended, routine C4d surveillance is hindered by the invasive nature of endomyocardial biopsy. This study documents a noninvasive and quantitative method for detecting C4d deposition in cardiac allografts. Thus, the utility of this approach may realize noninvasive detection of this important biomarker in clinic.
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Bhagra SK, Pettit S, Parameshwar J. Cardiac transplantation: indications, eligibility and current outcomes. Heart 2018; 105:252-260. [DOI: 10.1136/heartjnl-2018-313103] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Hollander SA, Peng DM, Mills M, Berry GJ, Fedrigo M, McElhinney DB, Almond CS, Rosenthal DN. Pathological antibody-mediated rejection in pediatric heart transplant recipients: Immunologic risk factors, hemodynamic significance, and outcomes. Pediatr Transplant 2018; 22:e13197. [PMID: 29729067 DOI: 10.1111/petr.13197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/23/2018] [Indexed: 12/31/2022]
Abstract
Biopsy-diagnosed pAMR has been observed in over half of pediatric HT recipients within 6 years of transplantation. We report the incidence and outcomes of pAMR at our center. All endomyocardial biopsies for all HT recipients transplanted between 2010 and 2015 were reviewed and classified using contemporary ISHLT guidelines. Graft dysfunction was defined as a qualitative decrement in systolic function by echocardiogram or an increase of ≥3 mm Hg in atrial filling pressure by direct measurement. Among 96 patients, pAMR2 occurred in 7 (7%) over a median follow-up period of 3.1 years, while no cases of pAMR3 occurred. A history of CHD, DSA at transplant, and elevated filling pressures were associated with pAMR2. Five-sixths (83%) of patients developed new C1q+ DSA at the time of pAMR diagnosis. There was a trend toward reduced survival, with 43% of patients dying within 2.3 years of pAMR diagnosis.
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Affiliation(s)
- Seth A Hollander
- Department of Pediatrics (Cardiology), Stanford University School of Medicine, Stanford, CA, USA
| | - David M Peng
- Department of Pediatrics (Cardiology), University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Marcos Mills
- Department of Pediatrics (Cardiology), Stanford University School of Medicine, Stanford, CA, USA
| | - Gerald J Berry
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Marny Fedrigo
- Department of Cardiac Thoracic and Vascular Sciences, University of Padua Medical School, Padua, Italy
| | - Doff B McElhinney
- Department of Cardiothoracic Surgery, LPCH Heart Center Clinical and Translational Research Program, Stanford University, Stanford, CA, USA
| | - Christopher S Almond
- Department of Pediatrics (Cardiology), Stanford University School of Medicine, Stanford, CA, USA
| | - David N Rosenthal
- Department of Pediatrics (Cardiology), Stanford University School of Medicine, Stanford, CA, USA
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33
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Onwuemene OA, Grambow SC, Patel CB, Mentz RJ, Milano CA, Rogers JG, Metjian AD, Arepally GM, Ortel TL. Indications for and outcomes of therapeutic plasma exchange after cardiac transplantation: A single center retrospective study. J Clin Apher 2018; 33:469-479. [PMID: 29524240 PMCID: PMC6105382 DOI: 10.1002/jca.21622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/19/2018] [Accepted: 02/24/2018] [Indexed: 02/01/2023]
Abstract
INTRODUCTION Limited data are available describing indications for and outcomes of therapeutic plasma exchange (TPE) in cardiac transplantation. METHODS In a retrospective study of patients who underwent cardiac transplantation at Duke University Medical Center from 2010 to 2014, we reviewed 3 TPE treatment patterns: a Single TPE procedure within 24 h of transplant; Multiple TPE procedures initiated within 24 h of transplant; and 1 or more TPE procedures beginning >24 h post-transplant. Primary and secondary outcomes were overall survival (OS) and TPE survival (TS), respectively. RESULTS Of 313 patients meeting study criteria, 109 (35%) underwent TPE. TPE was initiated in 82 patients within 24 h, 40 (37%) receiving a single procedure (Single TPE), and 42 (38%) multiple procedures (Multiple TPE). Twenty-seven (25%) began TPE >24 h after transplant (Delayed TPE). The most common TPE indication was elevated/positive panel reactive or human leukocyte antigen antibodies (32%). With a median follow-up of 49 months, the non-TPE treated and Single TPE cohorts had similar OS (HR 1.08 [CI, 0.54, 2.14], P = .84), while the Multiple and Delayed TPE cohorts had worse OS (HR 2.62 [CI, 1.53, 4.49] and HR 1.98 [CI, 1.02, 3.83], respectively). The Multiple and Delayed TPE cohorts also had worse TS (HR 2.59 [CI, 1.31, 5.14] and HR 3.18 [CI, 1.56, 6.50], respectively). Infection rates did not differ between groups but was independently associated with OS (HR 2.31 [CI, 1.50, 3.54]). CONCLUSIONS TPE is an important therapeutic modality in cardiac transplant patients. Prospective studies are needed to better define TPE's different roles in this patient population.
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Affiliation(s)
- Oluwatoyosi A Onwuemene
- Division of Hematology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Steven C Grambow
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Chetan B Patel
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Robert J Mentz
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Carmelo A Milano
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Joseph G Rogers
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Ara D Metjian
- Division of Hematology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Gowthami M Arepally
- Division of Hematology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
- Department of Pathology, Duke University Medical Center, Durham, North Carolina
| | - Thomas L Ortel
- Division of Hematology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
- Department of Pathology, Duke University Medical Center, Durham, North Carolina
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Langstraat M, Musters KJS, Manintveld O, Masetti M, Potena L. Coronary artery disease in heart transplantation: new concepts for an old disease. Transpl Int 2018; 31:787-827. [DOI: 10.1111/tri.13141] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
| | | | | | - Marco Masetti
- Heart and Lung Transplant Program; Bologna University Hospital; Bologna Italy
| | - Luciano Potena
- Heart and Lung Transplant Program; Bologna University Hospital; Bologna Italy
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35
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The clinical impact of donor-specific antibodies in heart transplantation. Transplant Rev (Orlando) 2018; 32:207-217. [PMID: 29804793 DOI: 10.1016/j.trre.2018.05.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 05/02/2018] [Accepted: 05/04/2018] [Indexed: 12/25/2022]
Abstract
Donor-specific antibodies (DSA) are integral to the development of antibody-mediated rejection (AMR). Chronic AMR is associated with high mortality and an increased risk for cardiac allograft vasculopathy (CAV). Anti-donor HLA antibodies are present in 3-11% of patients at the time of heart transplantation (HTx), with de novo DSA (predominantly anti-HLA class II) developing post-transplant in 10-30% of patients. DSA are associated with lower graft and patient survival after HTx, with one study suggesting a three-fold increase in mortality in patients who develop de novo DSA (dnDSA). DSA against anti-HLA class II, notably DQ, are at particularly high risk for graft loss. Although detection of DSA is not a criterion for pathologic diagnosis of AMR, circulating DSA are found in almost all cases of AMR. MFI thresholds of ~5000 for DSA against class I antibodies, 2000 against class II antibodies, or an overall cut-off of 5-6000 for any DSA, have been suggested as being predictive for AMR. There is no firm consensus on pre-transplant strategies to treat HLA antibodies, or for the elimination of antibodies after diagnosis of AMR. Minimizing the risk of dnDSA is rational but data on risk factors in HTx are limited. The effect of different immunosuppressive regimens is largely unexplored in HTx, but studies in kidney transplantation emphasize the importance of adherence and maintaining adequate immunosuppression. One study has suggested a reduced risk for dnDSA with rabbit antithymocyte globulin induction. Management of DSA pre- and post-HTx varies but typically most centers rely on a plasmapheresis or immunoadsorption, with or without rituximab and/or intravenous immunoglobulin. Based on the literature and a multi-center survey, an algorithm for a suggested surveillance and therapeutic strategy is provided.
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Coutance G, Van Aelst L, Hékimian G, Vidal C, Rouvier P, Saheb S, Gautreau C, Leprince P, Varnous S. Antibody-mediated rejection induced cardiogenic shock: Too late for conventional therapy. Clin Transplant 2018; 32:e13253. [DOI: 10.1111/ctr.13253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Guillaume Coutance
- Department of Cardiac and Thoracic Surgery; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Lucas Van Aelst
- Department of Cardiac and Thoracic Surgery; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
- Department of Cardiovascular Sciences; KULeuven Campus Gasthuisberg O&N1; Leuven Belgium
| | - Guillaume Hékimian
- Department of Medical Intensive Care Unit; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Charles Vidal
- Department of Cardiac Anesthesia and Reanimation; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Philippe Rouvier
- Department of Pathology; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Samir Saheb
- Department of Hemo-biotherapies; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Chantal Gautreau
- Laboratory of Immunology and Histocompatibility, AP-HP; Saint Louis Hospital; Paris France
| | - Pascal Leprince
- Department of Cardiac and Thoracic Surgery; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
| | - Shaida Varnous
- Department of Cardiac and Thoracic Surgery; Cardiology Institute; Pitié Salpêtrière Hospital; University of Paris VI; Paris France
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Cole RT, Gandhi J, Bray RA, Gebel HM, Yin M, Shekiladze N, Young A, Grant A, Mahoney I, Laskar SR, Gupta D, Bhatt K, Book W, Smith A, Nguyen D, Vega JD, Morris AA. Racial differences in the development of de-novo donor-specific antibodies and treated antibody-mediated rejection after heart transplantation. J Heart Lung Transplant 2018; 37:503-512. [DOI: 10.1016/j.healun.2017.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/01/2017] [Accepted: 11/01/2017] [Indexed: 11/29/2022] Open
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Vaughn GR, Jorgensen NW, Law YM, Albers EL, Hong BJ, Friedland-Little JM, Kemna MS. Outcome of antibody-mediated rejection compared to acute cellular rejection after pediatric heart transplantation. Pediatr Transplant 2018; 22. [PMID: 29222866 DOI: 10.1111/petr.13092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/08/2017] [Indexed: 01/28/2023]
Abstract
Outcomes of ACR after pediatric HTx have been well described, but less has been reported on outcomes of AMR. We compared the clinical characteristics and cardiovascular outcomes (composite end-point of death, retransplantation, or allograft vasculopathy) of pediatric HTx recipients with AMR, ACR, and no rejection in a retrospective single-center study of 104 recipients. Twenty were treated for AMR; 15 were treated for ACR. Recipients with AMR had an increased frequency of congenital heart disease (90% vs ACR 67% vs no rejection 59%, P = .03), homograft (68% vs 7% vs 18%, P < .001), HLA sensitization (45% vs 13% vs 13%, P = .008), and positive cross-match (30% vs 7% vs 9%, P = .046). AMR caused hemodynamic compromise more often than ACR (39% vs 4%, P = .02). AMR recipients had worse cardiovascular outcome than recipients with ACR or no rejection (40% vs 20% vs 8.6%, P = .003). In bivariate Cox analysis, AMR (HR 4.1, CI 1.4-12.0, P = .009) and ischemic time (HR 1.6, CI 1.1-2.3, P = .02) were associated with worse cardiovascular outcome; ACR was not. In summary, pediatric HTx recipients who develop AMR have worse cardiovascular outcome than recipients who develop only ACR or experience no rejection at all.
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Affiliation(s)
- Gabrielle R Vaughn
- Division of Pediatric Cardiology, Rady Children's Hospital, San Diego, CA, USA
| | - Neal W Jorgensen
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Yuk M Law
- Division of Pediatric Cardiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Erin L Albers
- Division of Pediatric Cardiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Borah J Hong
- Division of Pediatric Cardiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Joshua M Friedland-Little
- Division of Pediatric Cardiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
| | - Mariska S Kemna
- Division of Pediatric Cardiology, Seattle Children's Hospital, University of Washington, Seattle, WA, USA
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Antibody-mediated rejection in heart transplantation: new developments and old uncertainties. Curr Opin Organ Transplant 2017; 22:207-214. [PMID: 28301387 DOI: 10.1097/mot.0000000000000407] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Antibody-mediated rejection (AMR) currently represents one of the main problems for clinical management of heart transplant because of its diagnostic complexity and poor evidences supporting treatments. RECENT FINDINGS Disorder-based diagnosis is a cornerstone in defining AMR. The limitations of the current classification have been partially overcome by novel studies improving the description of the immune-pathological graft abnormalities, and by new molecular approaches allowing a better understanding of the mechanisms behind AMR and of its relationship with cellular rejection and chronic vasculopathy. In-depth characterization of donor-specific antibodies showed to provide additional prognostic information and guide for treatment. Clinical relevance of AMR is bound to appropriate detection of graft dysfunction. In addition to traditional longitudinal evaluation by echocardiogram, cardiac magnetic resonance and detection of cell-free DNA may represent novel sensitive markers for graft injury that could prompt treatment before dysfunction becomes clinically manifest. SUMMARY Despite improvements in the diagnostic process, therapeutic strategies made little progress in addition to the consolidation of practices supported by limited evidences. Novel complement inhibitors appear promising in changing this scenario. Nevertheless, collaborative multicenter studies are needed to develop standardized approaches tailored to the highly variable clinical and laboratory features of AMR.
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Prevalence of polyreactive innate clones among graft--infiltrating B cells in human cardiac allograft vasculopathy. J Heart Lung Transplant 2017; 37:385-393. [PMID: 29055600 DOI: 10.1016/j.healun.2017.09.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 08/09/2017] [Accepted: 09/21/2017] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Cardiac allograft vasculopathy (CAV) has been associated with graft-infiltrating B cells, although their characteristics are still unclear. In this study we examined the frequency, localization and reactivity profile of graft-infiltrating B cells to determine their contribution to the pathophysiology of CAV. METHODS B cells, plasma cells and macrophages were examined by immunohistochemistry in 56 allografts with CAV, 49 native failed hearts and 25 autopsy specimens. A total of 102 B-cell clones were immortalized directly from the infiltrates of 3 fresh cardiac samples with CAV. Their secreted antibodies were assessed using enzyme-linked immunoassay and flow cytometry. RESULTS B-cell infiltration was observed around coronary arteries in 93% of allograft explants with CAV. Comparatively, intragraft B cells were less frequent and less dense in the intraventricular myocardium from where routine biopsies are obtained. Plasma cells and macrophages were also detected in 85% and 95% of explants, respectively. Remarkably, B-cell infiltrates were not associated with circulating donor-specific antibodies (DSA) or prior episodes of antibody-mediated rejection (AMR). Among all B-cell clones generated from 3 explants with CAV, a majority secreted natural antibodies reactive to multiple autoantigens and apoptotic cells, a characteristic of innate B cells. CONCLUSIONS Our study reveals a high frequency of infiltrating B cells around the coronary arteries of allografts with CAV, independent of DSA or AMR. These cells are enriched for innate B cells with a polyreactive profile. The findings shift the focus from conventional DSA-producing B cells to the potentially pathogenic polyreactive B cells in the development of clinical CAV.
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41
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Clemmensen TS, Koefoed-Nielsen P, Jensen LA, Poulsen SH, Holm NR, Løgstrup BB, Christiansen EH, Dijkstra J, Valen KPB, Eiskjaer H. Donor-specific antibodies are associated with micro- and macrovascular coronary disease, restrictive myocardial damage, and poor outcome in heart-transplanted patients. Clin Transplant 2017. [DOI: 10.1111/ctr.13033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tor Skibsted Clemmensen
- Department of Cardiology; Aarhus University Hospital; Skejby Denmark
- Department of Cardiology; Horsens Regional Hospital; Horsens Denmark
| | | | - Lis-Ann Jensen
- Department of Clinical Immunology; Aarhus University Hospital; Skejby Denmark
| | | | | | | | | | - Jouke Dijkstra
- Division of Image Processing; Leiden University Medical Center; Leiden The Netherlands
| | | | - Hans Eiskjaer
- Department of Cardiology; Aarhus University Hospital; Skejby Denmark
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42
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Calculated panel-reactive antibody predicts outcomes on the heart transplant waiting list. J Heart Lung Transplant 2017; 36:787-796. [DOI: 10.1016/j.healun.2017.02.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 02/07/2017] [Accepted: 02/15/2017] [Indexed: 11/24/2022] Open
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Vega E, Schroder J, Nicoara A. Postoperative management of heart transplantation patients. Best Pract Res Clin Anaesthesiol 2017; 31:201-213. [PMID: 29110793 DOI: 10.1016/j.bpa.2017.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 06/01/2017] [Accepted: 06/16/2017] [Indexed: 01/17/2023]
Abstract
Heart transplant recipients are at risk for a number of post-transplantation complications such as graft dysfunction, rejection, and infection. The rates of many complications are decreasing over time, and prognosis is improving. However, these patients continue to experience significant morbidity and mortality. This review focuses on the optimal management of heart transplant recipients in the postoperative period, based on current knowledge. More information is needed about the best ways to predict, prevent, and treat primary graft dysfunction, right ventricular failure, and cellular and antibody-mediated rejection.
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Affiliation(s)
- Eleanor Vega
- Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA.
| | - Jacob Schroder
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA.
| | - Alina Nicoara
- Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA.
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Mangiola M, Marrari M, Feingold B, Zeevi A. Significance of Anti-HLA Antibodies on Adult and Pediatric Heart Allograft Outcomes. Front Immunol 2017; 8:4. [PMID: 28191005 PMCID: PMC5269448 DOI: 10.3389/fimmu.2017.00004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 01/03/2017] [Indexed: 12/17/2022] Open
Abstract
As methods for human leukocyte antigens (HLA) antibody detection have evolved and newer solid phase assays are much more sensitive, the last 15 years has seen a renewed focus on the importance of HLA antibodies in solid organ transplant rejection. However, there is still much controversy regarding the clinical significance of antibody level as depicted by the mean fluorescence intensity of a patient’s neat serum. Emerging techniques, including those that identify antibody level and function, show promise for the detection of individuals at risk of allograft rejection, determination of the effectiveness of desensitization prior to transplant, and for monitoring treatment of rejection. Here, we review current publications regarding the relevance of donor-specific HLA antibodies (DSA) in adult and pediatric heart transplantation (HT) with graft survival, development of antibody-mediated rejection and cardiac allograft vasculopathy (CAV). The negative impact of DSA on patient and allograft survival is evident in adult and pediatric HT recipients. Many questions remain regarding the most appropriate frequency of assessment of pre- and posttransplant DSA as well as the phenotype of DSA memory vs. true de novo antibody using large multicenter adult and pediatric cohorts and state-of-the-art methodologies for DSA detection and characterization.
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Affiliation(s)
- Massimo Mangiola
- Division of Transplant Pathology, Department of Pathology, University of Pittsburgh Medical Center , Pittsburgh, PA , USA
| | - Marilyn Marrari
- Division of Transplant Pathology, Department of Pathology, University of Pittsburgh Medical Center , Pittsburgh, PA , USA
| | - Brian Feingold
- Pediatric Cardiology, The Children's Hospital of Pittsburgh of UPMC , Pittsburgh, PA , USA
| | - Adriana Zeevi
- Division of Transplant Pathology, Department of Pathology, University of Pittsburgh Medical Center , Pittsburgh, PA , USA
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45
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Donor-specific anti-HLA antibodies with antibody-mediated rejection and long-term outcomes following heart transplantation. J Heart Lung Transplant 2016; 36:540-545. [PMID: 27916323 DOI: 10.1016/j.healun.2016.10.016] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/15/2016] [Accepted: 10/22/2016] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Donor-specific anti-HLA antibodies (DSA) are common after heart transplantation and are associated with rejection, cardiac allograft vasculopathy, and mortality. A noninvasive diagnostic test for pathologic antibody-mediated rejection (pAMR) does not exist. METHODS From January 1, 2010, through August 31, 2013, 221 consecutive adult patients underwent heart transplantation and were followed through October 1, 2015. The primary objective was to determine whether the presence of DSA could detect AMR at the time of pathologic diagnosis. Secondary analyses included association of DSA (stratified by major histocompatibility complex class and de novo status) during AMR with new graft dysfunction, graft loss (mortality or retransplantation), and development of cardiac allograft vasculopathy. RESULTS During the study period, 69 patients (31.2%) had DSA (24% had de novo DSA), and there were 74 episodes of pAMR in 38 patients. Sensitivity of DSA at any mean fluorescence intensity to detect concurrent pAMR was only 54.3%. The presence of any DSA during pAMR increased the odds of graft dysfunction (odds ratio = 5.37; 95% confidence interval [CI], 1.34-21.47; p = 0.018), adjusting for age, sex, and timing of AMR. Circulating class II DSA after transplantation increased risk of future pAMR (hazard ratio = 2.97; 95% CI, 1.31-6.73; p = 0.009). Patients who developed de novo class II DSA had 151% increased risk of graft loss (contingent on 30-day survival) compared with patients who did not have DSA (95% CI, 1.11-5.69; p = 0.027). CONCLUSIONS DSA were inadequate to diagnose pAMR. Class II DSA provided prognostic information regarding future pAMR, graft dysfunction with pAMR, and graft loss.
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Patel JK. Early and late AMR in heart transplantation—Distinct entities? J Heart Lung Transplant 2016; 35:1055-6. [DOI: 10.1016/j.healun.2016.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 07/11/2016] [Indexed: 11/25/2022] Open
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