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Franchon Marques Tejada N, Ziroldo Lopes JV, Duarte Gonçalves LE, Mamede Costa Andrade da Conceição I, Franco GR, Ghirotto B, Câmara NOS. AIM2 as a putative target in acute kidney graft rejection. Front Immunol 2022; 13:839359. [PMID: 36248890 PMCID: PMC9561248 DOI: 10.3389/fimmu.2022.839359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
Acute rejection (AR) is a process triggered via the recognition of grafted organ-derived antigens by the immune system, which could present as a life-threatening condition. In the context of a kidney transplant, despite improvement with immunosuppressive therapies, AR maintains a significant incidence of 10%, and currently available drugs generally act in similar and canonical pathways of lymphocyte activation. This prompted the research for different approaches to identify potential novel targets that could improve therapeutic interventions. Here, we conducted a transcriptome analysis comparing groups of acute rejection (including T cell-mediated rejection and antibody-mediated rejection) to stable grafts that included differentially expressed genes, transcription factor and kinase enrichment, and Gene Set Enrichment Analysis. These analyses revealed inflammasome enhancement in rejected grafts and AIM2 as a potential component linked to acute rejection, presenting a positive correlation to T-cell activation and a negative correlation to oxidative phosphorylation metabolism. Also, the AIM2 expression showed a global accuracy in discerning acute rejection grafts (area under the curve (AUC) = 0.755 and 0.894, p < 0.0001), and meta-analysis comprising different studies indicated a considerable enhancement of AIM2 in rejection (standardized mean difference (SMD) = 1.45, [CI 95%, 1.18 to 1.71]), especially for T cell-mediated rejection (TCMR) (SMD = 2.01, [CI 95%, 1.58 to 2.45]). These findings could guide future studies of AIM2 as either an adjuvant target for immunosuppression or a potential biomarker for acute rejection and graft survival.
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Affiliation(s)
- Nathália Franchon Marques Tejada
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - João Vitor Ziroldo Lopes
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Luis Eduardo Duarte Gonçalves
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Izabela Mamede Costa Andrade da Conceição
- Laboratory of Biochemical Genetics, Department of Biochemistry and Immunology, Institute of Biomedical Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Glória Regina Franco
- Laboratory of Biochemical Genetics, Department of Biochemistry and Immunology, Institute of Biomedical Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Bruno Ghirotto
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Niels Olsen Saraiva Câmara
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, Department of Immunology, University of São Paulo, São Paulo, Brazil
- Laboratory of Biochemical Genetics, Department of Biochemistry and Immunology, Institute of Biomedical Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
- *Correspondence: Niels Olsen Saraiva Câmara, ;
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Belleudi V, Rosa AC, Finocchietti M, Poggi FR, Marino ML, Massari M, Spila Alegiani S, Masiero L, Ricci A, Bedeschi G, Puoti F, Cardillo M, Pierobon S, Nordio M, Ferroni E, Zanforlini M, Piccolo G, Leone O, Ledda S, Carta P, Garau D, Lucenteforte E, Davoli M, Addis A. An Italian multicentre distributed data research network to study the use, effectiveness, and safety of immunosuppressive drugs in transplant patients: Framework and perspectives of the CESIT project. Front Pharmacol 2022; 13:959267. [PMID: 36188626 PMCID: PMC9521186 DOI: 10.3389/fphar.2022.959267] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/15/2022] [Indexed: 11/30/2022] Open
Abstract
The goal of post-transplant immunosuppressive drug therapy is to prevent organ rejection while minimizing drug toxicities. In clinical practice, a multidrug approach is commonly used and involves drugs with different mechanisms of action, including calcineurin inhibitors (CNI) (tacrolimus or cyclosporine), antimetabolite (antimet) (mycophenolate or azathioprine), inhibitors of mechanistic target of rapamycin (mTOR) (sirolimus or everolimus), and/or steroids. Although evidence based on several randomized clinical trials is available, the optimal immunosuppressive therapy has not been established and may vary among organ transplant settings. To improve the knowledge on this topic, a multiregional research network to Compare the Effectiveness and Safety of Immunosuppressive drugs in Transplant patients (CESIT) has been created with the financial support of the Italian Medicines Agency. In this article, we describe the development of this network, the framework that was designed to perform observational studies, and we also give an overview of the preliminary results that we have obtained. A multi-database transplant cohort was enrolled using a common data model based on healthcare claims data of four Italian regions (Lombardy, Veneto, Lazio, and Sardinia). Analytical datasets were created using an open-source tool for distributed analysis. To link the National Transplant Information System to the regional transplant cohorts, a semi-deterministic record linkage procedure was performed. Overall, 6,914 transplant patients from 2009–19 were identified: 4,029 (58.3%) for kidney, 2,219 (32.1%) for liver, 434 (6.3%) for heart, and 215 (3.1%) for lung. As expected, demographic and clinical characteristics showed considerable variability among organ settings. Although the triple therapy in terms of CNI + antimet/mTOR + steroids was widely dispensed for all settings (63.7% for kidney, 33.5% for liver, 53.3% for heart, and 63.7% for lung), differences in the active agents involved were detected. The CESIT network represents a great opportunity to study several aspects related to the use, safety, and effectiveness of post-transplant maintenance immunosuppressive therapy in real practice.
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Affiliation(s)
- Valeria Belleudi
- Department of Epidemiology, Lazio Regional Health Service, Rome, Italy
- *Correspondence: Valeria Belleudi,
| | | | | | | | | | - Marco Massari
- National Center for Drug Research and Evaluation, Istituto Superiore Di Sanità, Rome, Italy
| | | | - Lucia Masiero
- Italian National Transplant Center—Istituto Superiore Di Sanità, Rome, Italy
| | - Andrea Ricci
- Italian National Transplant Center—Istituto Superiore Di Sanità, Rome, Italy
| | - Gaia Bedeschi
- Italian National Transplant Center—Istituto Superiore Di Sanità, Rome, Italy
| | - Francesca Puoti
- Italian National Transplant Center—Istituto Superiore Di Sanità, Rome, Italy
| | - Massimo Cardillo
- Italian National Transplant Center—Istituto Superiore Di Sanità, Rome, Italy
| | | | | | | | | | | | | | - Stefano Ledda
- General Directorate for Health, Sardinia Region, Italy
| | - Paolo Carta
- General Directorate for Health, Sardinia Region, Italy
| | | | - Ersilia Lucenteforte
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Marina Davoli
- Department of Epidemiology, Lazio Regional Health Service, Rome, Italy
| | - Antonio Addis
- Department of Epidemiology, Lazio Regional Health Service, Rome, Italy
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Pascual J, Jiménez C, Krajewska M, Seron D, Kotton CN, Portolés J, Witzke O, Sorensen SS, Andrés A, Crespo M, Paz-Artal E, Díez T, Ortega A, Portero I. The Immunobiogram, a novel in vitro diagnostic test to measure the pharmacodynamic response to immunosuppressive therapy in kidney transplant patients. Transpl Immunol 2022; 75:101711. [PMID: 36096417 DOI: 10.1016/j.trim.2022.101711] [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: 05/07/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Diagnostic tools to measure the response to individual immunosuppressive drugs for transplant patients are currently lacking. We previously developed the blood-based Immunobiogram bioassay for in-vitro characterization of the pharmacodynamic response of patients' own immune cells to a range of immunosuppressants. We used Immunobiogram to examine the association between patients' sensitivity to their prescribed immunosuppressants and clinical outcome. METHODS We conducted an international, multicenter, observational study in a kidney transplant population undergoing maintenance immunosuppressive therapy. Patients were selected by clinical course poor [PCC] N = 53 (with renal dysfunction, and rejection signs in biopsy or/and an increase in DSA strength in last 12 months) versus good [GCC] N = 50 (with stable renal function and treatment, no rejection and no DSA titers). Immunobiogram dose-response curve parameters were compared between both subgroups in patients treated with mycophenolate, tacrolimus, corticosteroids, cyclosporine A or everolimus. Parameters for which significant inter-group differences were observed were further analyzed by univariate and subsequent multivariate logistic regression. RESULTS Clinical outcome was associated with following parameters: area over the curve (AOC) and 25% (ID25) and 50% (ID50) inhibitory response in mycophenolate, tacrolimus, and corticosteroid-treated subgroups, respectively. These statistically significant associations persisted in mycophenolate (OR 0.003, CI95% <0.001-0.258; p = 0.01) and tacrolimus (OR < 0.0001, CI95% <0.00001-0.202; p = 0.016) subgroups after adjusting for concomitant corticosteroid treatment, and in corticosteroid subgroup after adjusting for concomitant mycophenolate or tacrolimus treatment (OR 0.003; CI95% <0.0001-0.499; p = 0.026). CONCLUSIONS Our results highlight the potential of Immunobiogram as a tool to test the pharmacodynamic response to individual immunosuppressive drugs.
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Affiliation(s)
- Julio Pascual
- Nephrology Department, Hospital del Mar, Institute Mar for Medical Research, Barcelona, Spain; Nephrology Department, Hospital 12 de Octubre, Madrid, Spain.
| | | | - Magdalena Krajewska
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Daniel Seron
- Nephrology Department, Hospital Vall d'Hebron, Barcelona, Spain
| | - Camille N Kotton
- Transplant Infectious Diseases Division, Massachusetts General Hospital, Boston, MA, United States of America
| | - Jose Portolés
- Nephrology Department, Hospital Puerta de Hierro, Madrid, Spain
| | - Oliver Witzke
- Department of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Soren S Sorensen
- Department of Nephrology, Rigshospitalet University Hospital Copenhagen, Denmark
| | - Amado Andrés
- Nephrology Department, Hospital 12 de Octubre, Madrid, Spain
| | - Marta Crespo
- Nephrology Department, Hospital del Mar, Institute Mar for Medical Research, Barcelona, Spain
| | | | - Teresa Díez
- Biohope Scientific Solutions for Human Health, Madrid, Spain
| | - Alvaro Ortega
- Biohope Scientific Solutions for Human Health, Madrid, Spain
| | - Isabel Portero
- Biohope Scientific Solutions for Human Health, Madrid, Spain
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Demiray A, Kanbay M. The assessment of hypertension in kidney transplant patients: time to change our approach? Clin Kidney J 2022; 15:1-4. [PMID: 35035931 PMCID: PMC8757416 DOI: 10.1093/ckj/sfab151] [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: 07/12/2021] [Accepted: 08/10/2021] [Indexed: 02/06/2023] Open
Abstract
Kidney transplantation (KT) is an increasingly utilized treatment for end-stage kidney disease. Hypertension either as a cause of kidney disease or as a complication of chronic kidney disease is the most frequently encountered comorbidity of KT patients. Hence, the management of hypertension in KT patients is crucial to prolong patient and graft survival. Ambulatory blood pressure monitoring (ABPM) appeared as a promising technique that has superiority over office and home blood pressure (BP) monitoring to correctly diagnose and manage hypertension. A recent meta-analysis by Pisano et al. including 42 studies with 4115 participants provided strong data for the comparison of ABPM with office BP monitoring in KT patients. In addition to the current literature knowledge, the findings of Pisano et al. filled the long-awaited evidence gap to suggest ABPM as a first-line BP monitoring technique for KT patients. Despite its disadvantages, such as patient discomfort, cost–effectiveness and limited availability, ABPM has crucial advantages in the management of hypertension including the detection of abnormal circadian BP patterns, the assessment of effects of physical activity and short-term variability of BP, and the exclusion of masked and white-coat hypertension.
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Affiliation(s)
- Atalay Demiray
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Mehmet Kanbay
- Department of Medicine, Division of Nephrology, Koc University School of Medicine, Istanbul, Turkey
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5
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Kaspar M, Fette G, Hanke M, Ertl M, Puppe F, Störk S. Automated provision of clinical routine data for a complex clinical follow-up study: A data warehouse solution. Health Informatics J 2022; 28:14604582211058081. [PMID: 34986681 DOI: 10.1177/14604582211058081] [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] [Indexed: 11/15/2022]
Abstract
A deep integration of routine care and research remains challenging in many respects. We aimed to show the feasibility of an automated transformation and transfer process feeding deeply structured data with a high level of granularity collected for a clinical prospective cohort study from our hospital information system to the study's electronic data capture system, while accounting for study-specific data and visits. We developed a system integrating all necessary software and organizational processes then used in the study. The process and key system components are described together with descriptive statistics to show its feasibility in general and to identify individual challenges in particular. Data of 2051 patients enrolled between 2014 and 2020 was transferred. We were able to automate the transfer of approximately 11 million individual data values, representing 95% of all entered study data. These were recorded in n = 314 variables (28% of all variables), with some variables being used multiple times for follow-up visits. Our validation approach allowed for constant good data quality over the course of the study. In conclusion, the automated transfer of multi-dimensional routine medical data from HIS to study databases using specific study data and visit structures is complex, yet viable.
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Affiliation(s)
- Mathias Kaspar
- Comprehensive Heart Failure Center and Department of Internal Medicine I, 27207University and University Hospital Würzburg, Würzburg, Germany
- Department of Health Services Research, 11233Carl von Ossietzky University of Oldenburg, Oldenburg, Germany
| | - Georg Fette
- Service Center Medical Informatics, 27207Würzburg University Hospital, Würzburg, Germany
| | - Monika Hanke
- Comprehensive Heart Failure Center and Department of Internal Medicine I, 27207University and University Hospital Würzburg, Würzburg, Germany
| | - Maximilian Ertl
- Service Center Medical Informatics, 27207Würzburg University Hospital, Würzburg, Germany
| | - Frank Puppe
- Chair of Computer Science VI, 9190University of Würzburg, Würzburg, Germany
| | - Stefan Störk
- Comprehensive Heart Failure Center and Department of Internal Medicine I, 27207University and University Hospital Würzburg, Würzburg, Germany
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6
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Montero N, Toapanta N, Pallarès N, Crespo M, Diekmann F, Guirado L, Esteban R, Codina S, Melilli E, Buxeda A, Velis G, Torres IB, Revuelta I, Molina Andujar A, Facundo C, Bardají B, Riera L, Fiol M, Cruzado JM, Comas J, Giral M, Naesens M, Åsberg A, Moreso F, Bestard O. Deciphering transplant outcomes of expanded kidney allografts donated after controlled circulatory death in the current transplant era. A call for caution. Transpl Int 2021; 34:2494-2506. [PMID: 34626501 DOI: 10.1111/tri.14131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/20/2021] [Accepted: 10/03/2021] [Indexed: 01/20/2023]
Abstract
Outcomes of kidney transplantation (KT) after controlled circulatory death (cDCD) with highly expanded criteria donors (ECD) and recipients have not been thoroughly evaluated. We analyzed in a multicenter cohort of 1161 consecutive KT, granular baseline donor and recipient factors predicting transplant outcomes, selected by bootstrapping and Cox proportional hazards, and were validated in a contemporaneous European KT cohort (n = 1585). 74.3% were DBD and 25.7% cDCD-KT. ECD-KT showed the poorest graft survival rates, irrespective of cDCD or DBD (log-rank < 0.001). Besides standard ECD classification, dialysis vintage, older age, and previous cardiovascular recipient events together with low class-II-HLA match, long cold ischemia time and combining a diabetic donor with a cDCD predicted graft loss (C-Index 0.715, 95% CI 0.675-0.755). External validation showed good prediction accuracy (C-Index 0.697, 95%CI 0.643-0.741). Recipient older age, male gender, dialysis vintage, previous cardiovascular events, and receiving a cDCD independently predicted patient death. Benefit/risk assessment of undergoing KT was compared with concurrent waitlisted candidates, and despite the fact that undergoing KT outperformed remaining waitlisted, remarkably high mortality rates were predicted if KT was undertaken under the worst risk-prediction model. Strategies to increase the donor pool, including cDCD transplants with highly expanded donor and recipient candidates, should be performed with caution.
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Affiliation(s)
- Nuria Montero
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Néstor Toapanta
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari Vall Hebrón, Barcelona, Spain
| | - Natàlia Pallarès
- Biostatistics Unit, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Spain
| | - Marta Crespo
- Kidney Transplant Unit, Nephrology Department, Hospital del Mar, Barcelona, Spain
| | - Fritz Diekmann
- Kidney Transplant Unit, Nephrology Department, Hospital Clínic Provincial, Institut d'Investigació Biomèdica August Pi i Sunyer, RedInRen, Barcelona, Spain
| | - Lluis Guirado
- Kidney Transplant Unit, Nephrology Department, Fundació Puigvert, Barcelona, Spain
| | - Rafael Esteban
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Sergi Codina
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Edoardo Melilli
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Anna Buxeda
- Kidney Transplant Unit, Nephrology Department, Hospital del Mar, Barcelona, Spain
| | - Gonzalo Velis
- Kidney Transplant Unit, Nephrology Department, Hospital del Mar, Barcelona, Spain
| | - Irina B Torres
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari Vall Hebrón, Barcelona, Spain
| | - Ignacio Revuelta
- Kidney Transplant Unit, Nephrology Department, Hospital Clínic Provincial, Institut d'Investigació Biomèdica August Pi i Sunyer, RedInRen, Barcelona, Spain
| | - Alicia Molina Andujar
- Kidney Transplant Unit, Nephrology Department, Hospital Clínic Provincial, Institut d'Investigació Biomèdica August Pi i Sunyer, RedInRen, Barcelona, Spain
| | - Carme Facundo
- Kidney Transplant Unit, Nephrology Department, Fundació Puigvert, Barcelona, Spain
| | - Beatriz Bardají
- Kidney Transplant Unit, Nephrology Department, Fundació Puigvert, Barcelona, Spain
| | - Lluís Riera
- Urology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Maria Fiol
- Urology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Josep M Cruzado
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
| | - Jordi Comas
- Catalan Organ Transplant Organization, Barcelona, Spain
| | - Magali Giral
- CRTI UMR 1064, Inserm, Université de Nantes, ITUN, CHU Nantes, RTRS Centaure, Nantes, France
| | - Maarten Naesens
- Department of Microbiology, Immunology, and Transplantation, KU Leuven, Leuven, Belgium
| | - Anders Åsberg
- Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway.,Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Francesc Moreso
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari Vall Hebrón, Barcelona, Spain
| | - Oriol Bestard
- Kidney Transplant Unit, Nephrology Department, Hospital Universitari de Bellvitge, L' Hospitalet de Llobregat, Barcelona, Spain
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Pre-transplant donor-reactive IL-21 producing T cells as a tool to identify an increased risk for acute rejection. Sci Rep 2021; 11:12445. [PMID: 34127739 PMCID: PMC8203783 DOI: 10.1038/s41598-021-91967-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/26/2021] [Indexed: 12/16/2022] Open
Abstract
Pre-transplant screening focuses on the detection of anti-HLA alloantibodies. Previous studies have shown that IFN-γ and IL-21 producing T cells are associated with the development of acute rejection (AR). The aim of this study, was to assess whether pre-transplant donor-reactive T cells and/or B cells are associated with increased rejection risk. Samples from 114 kidney transplant recipients (transplanted between 2010 and 2013) were obtained pre-transplantation. The number of donor-reactive IFN-γ and IL-21 producing cells was analyzed by ELISPOT assay. The presence of donor specific antibodies (DSA) was also determined before transplantation. Numbers of donor-reactive IFN-γ producing cells were similar in patients with or without AR whereas those of IL-21 producing cells were higher in patients with AR (p = 0.03). Significantly more patients with AR [6/30(20%)] had detectable DSA compared to patients without AR [5/84(5.9%), p = 0.03]. Multivariate logistic regression showed that donor age (OR 1.06), pre-transplant DSA (OR 5.61) and positive IL-21 ELISPOT assay (OR 2.77) were independent predictors of an increased risk for the development of AR. Aside from an advanced donor-age and pre-transplant DSA, also pre-transplant donor-reactive IL-21 producing cells are associated with the development of AR after transplantation.
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8
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Donor-specific ELISPOT assay for predicting acute rejection and allograft function after kidney transplantation: A systematic review and meta-analysis. Clin Biochem 2021; 94:1-11. [PMID: 33882287 DOI: 10.1016/j.clinbiochem.2021.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 12/29/2022]
Abstract
Acute rejection remains an important problem after kidney transplantation. Enzyme-linked immunosorbent spot (ELISPOT) assay has been investigated extensively and has shown promising results as a predictor of allograft rejection. The objective of this study was to systematically review and analyze the predictive value of the donor-specific ELISPOT assay to identify recipients at risk for acute rejection. Electronic databases were searched for studies reporting donor-specific ELISPOT and kidney transplantation outcomes. Odds ratio (OR) for acute rejection was calculated, along with standardized mean difference (SMD) of cytokine producing-cells between recipients with and without acute rejection. Pooled estimates were calculated using random-effect models. The positive ELISPOT cutoff frequencies were extracted from each study. From 665 articles found, 32 studies were included in the meta-analysis. IFN-γ was the most investigated cytokine (30 out of 32 studies). Patients with positive pre-transplantation donor-reactive IFN-γ ELISPOT had an OR of 3.3 for acute rejection (95%-CI 2.1 to 5.1), and OR of 6.8 (95%-CI 2.5 to 18.9) for post-transplantation ELISPOT. Recipients with rejection had significantly higher frequencies of pre- and post-transplantation cytokine producing-cells (SMD 0.47, 95%-CI 0.07 to 0.87 and SMD 3.68, 95%-CI 1.04 to 6.32, respectively). Pre-transplantation ELISPOT had a positive predictive value of 43% and a negative predictive value of 81% for acute rejection. A positive ELISPOT result was associated with a lower estimated glomerular filtration rate (SMD -0.59, 95%-CI -0.83 to -0.34). In conclusion, patients with a high frequency of donor-reactive IFN-γ ELISPOT are at higher risk for acute rejection. The donor-specific IFN-γ ELISPOT assay can serve as an immune-monitoring tool in kidney transplantation.
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9
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Lenain R, Dantan E, Giral M, Foucher Y, Asar Ö, Naesens M, Hazzan M, Fournier MC. External Validation of the DynPG for Kidney Transplant Recipients. Transplantation 2021; 105:396-403. [PMID: 32108750 DOI: 10.1097/tp.0000000000003209] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND In kidney transplantation, dynamic prediction of patient and kidney graft survival (DynPG) may help to promote therapeutic alliance by delivering personalized evidence-based information about long-term graft survival for kidney transplant recipients. The objective of the current study is to externally validate the DynPG. METHODS Based on 6 baseline variables, the DynPG can be updated with any new serum creatinine measure available during the follow-up. From an external validation sample of 1637 kidney recipients with a functioning graft at 1-year posttransplantation from 2 European transplantation centers, we assessed the prognostic performance of the DynPG. RESULTS As one can expect from an external validation sample, differences in several recipient, donor, and transplantation characteristics compared with the learning sample were observed. Patients were mainly transplanted from deceased donors (91.6% versus 84.8%; P < 0.01), were less immunized against HLA class I (18.4% versus 32.7%; P < 0.01) and presented less comorbidities (62.2% for hypertension versus 82.7%, P < 0.01; 25.1% for cardiovascular disease versus 33.9%, P < 0.01). Despite these noteworthy differences, the area under the ROC curve varied from 0.70 (95% confidence interval [CI], 0.64-0.76) to 0.76 (95% CI, 0.64-0.88) for prediction times at 1 and 6 years posttransplantation respectively, and calibration plots revealed reasonably accurate predictions. CONCLUSIONS We validated the prognostic capacities of the DynPG in terms of both discrimination and calibration. Our study showed the robustness of the DynPG for informing both the patient and the physician, and its transportability for a cohort presenting different features than the one used for the DynPG development.
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Affiliation(s)
- Rémi Lenain
- Department of Nephrology, Huriez Hospital, Lille University Hospital, Lille, France
| | - Etienne Dantan
- INSERM UMR 1246 - SPHERE, Nantes University, Tours University, Nantes, France
| | - Magali Giral
- CRTI UMR 1064, Inserm, Université de Nantes, ITUN, CHU Nantes, RTRS Centaure, Nantes, France
- Centre d'Investigation Clinique en Biothérapie, Nantes, France
| | - Yohann Foucher
- INSERM UMR 1246 - SPHERE, Nantes University, Tours University, Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - Özgür Asar
- Department of Biostatistics and Medical Informatics, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Maarten Naesens
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Department of Nephrology and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium
| | - Marc Hazzan
- Department of Nephrology, Huriez Hospital, Lille University Hospital, Lille, France
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Fusaro M, Cosmai L, Evenepoel P, Nickolas TL, Cheung AM, Aghi A, Tripepi G, Plebani M, Iervasi G, Vettor R, Zaninotto M, Ravera M, Foramitti M, Giannini S, Sella S, Gallieni M. Vitamin K and Kidney Transplantation. Nutrients 2020; 12:nu12092717. [PMID: 32899501 PMCID: PMC7551925 DOI: 10.3390/nu12092717] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023] Open
Abstract
The assessment of the vitamin K status and its effects on clinical outcomes in kidney transplantation (KT) patients has sparked interest, but it is still largely unfulfilled. In part, this is due to difficulties in laboratory measurements of vitamin K, especially K2 vitamers. Vitamin K status is currently best assessed by measuring undercarboxylated vitamin-K-dependent proteins. The relative contribution of vitamin K1 and K2 to the health status of the general population and CKD (chronic kidney disease) patients, including KT patients, is also poorly studied. Through a complete and first review of the existing literature, we summarize the current knowledge of vitamin K pathophysiology and its potential role in preventing KT complications and improving organ survival. A specific focus is placed on cardiovascular complications, bone fractures, and the relationship between vitamin K and cancer. Vitamin K deficiency could determine adverse outcomes, and KT patients should be better studied for vitamin K assessment and modalities of effective therapeutic approaches.
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Affiliation(s)
- Maria Fusaro
- National Research Council (CNR), Institute of Clinical Physiology (IFC), 56124 Pisa, Italy;
- Department of Medicine, University of Padova, 35128 Padova, Italy;
- Correspondence:
| | - Laura Cosmai
- Nephrology Unit, ASST Fatebenefratelli Sacco, 20157 Milano, Italy; (L.C.); (M.G.)
| | - Pieter Evenepoel
- Laboratory of Nephrology, Department of Immunology and Microbiology, B-3000 Leuven, Belgium;
| | - Thomas L. Nickolas
- Division of Nephrology, Department of Medicine, Columbia University, New York City, NY 10032, USA;
| | - Angela M. Cheung
- Department of Medicine, University of Toronto, Toronto, ON M5S, Canada;
| | - Andrea Aghi
- Department of Medicine, Clinica Medica 1, University of Padua, 35128 Padova, PD, Italy; (A.A.); (S.G.); (S.S.)
| | - Giovanni Tripepi
- CNR-IFC, Clinical Epidemiology of Renal Diseases and Hypertension, Ospedali Riuniti, 89124 Reggio Calabria, Italy;
| | - Mario Plebani
- Laboratory Medicine Unit, Department of Medicine, University of Padua, 35128 Padova, Italy; (M.P.); (M.Z.)
| | - Giorgio Iervasi
- National Research Council (CNR), Institute of Clinical Physiology (IFC), 56124 Pisa, Italy;
| | - Roberto Vettor
- Department of Medicine, University of Padova, 35128 Padova, Italy;
| | - Martina Zaninotto
- Laboratory Medicine Unit, Department of Medicine, University of Padua, 35128 Padova, Italy; (M.P.); (M.Z.)
| | | | - Marina Foramitti
- Divisione di Nefrologia e Dialisi, Renal Department, ASST-Cremona, Largo Priori 1, 26100 Cremona, Italy;
| | - Sandro Giannini
- Department of Medicine, Clinica Medica 1, University of Padua, 35128 Padova, PD, Italy; (A.A.); (S.G.); (S.S.)
| | - Stefania Sella
- Department of Medicine, Clinica Medica 1, University of Padua, 35128 Padova, PD, Italy; (A.A.); (S.G.); (S.S.)
| | - Maurizio Gallieni
- Nephrology Unit, ASST Fatebenefratelli Sacco, 20157 Milano, Italy; (L.C.); (M.G.)
- Department of Biomedical and Clinical Sciences ‘Luigi Sacco’, Università di Milano, 20157 Milano, Italy
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Osté MCJ, Flores-Guerrero JL, Gruppen EG, Kieneker LM, Connelly MA, Otvos JD, Dullaart RPF, Bakker SJL. High Plasma Branched-Chain Amino Acids Are Associated with Higher Risk of Post-Transplant Diabetes Mellitus in Renal Transplant Recipients. J Clin Med 2020; 9:jcm9020511. [PMID: 32069900 PMCID: PMC7073569 DOI: 10.3390/jcm9020511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/11/2020] [Indexed: 01/21/2023] Open
Abstract
Post-transplant diabetes mellitus (PTDM) is a serious complication in renal transplant recipients. Branched-chain amino acids (BCAAs) are involved in the pathogenesis of insulin resistance. We determined the association of plasma BCAAs with PTDM and included adult renal transplant recipients (≥18 y) with a functioning graft for ≥1 year in this cross-sectional cohort study with prospective follow-up. Plasma BCAAs were measured in 518 subjects using nuclear magnetic resonance spectroscopy. We excluded subjects with a history of diabetes, leaving 368 non-diabetic renal transplant recipients eligible for analyses. Cox proportional hazards analyses were used to assess the association of BCAAs with the development of PTDM. Mean age was 51.1 ± 13.6 y (53.6% men) and plasma BCAA was 377.6 ± 82.5 µM. During median follow-up of 5.3 (IQR, 4.2–6.0) y, 38 (9.8%) patients developed PTDM. BCAAs were associated with a higher risk of developing PTDM (HR: 1.43, 95% CI 1.08–1.89) per SD change (p = 0.01), independent of age and sex. Adjustment for other potential confounders did not significantly change this association, although adjustment for HbA1c eliminated it. The association was mediated to a considerable extent (53%) by HbA1c. The association was also modified by HbA1c; BCAAs were only associated with renal transplant recipients without prediabetes (HbA1c < 5.7%). In conclusion, high concentrations of plasma BCAAs are associated with developing PTDM in renal transplant recipients. Alterations in BCAAs may represent an early predictive biomarker for PTDM.
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Affiliation(s)
- Maryse C. J. Osté
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.L.F.-G.); (L.M.K.); (S.J.L.B.)
- Correspondence: ; Tel.: +31-50-371-3449
| | - Jose L. Flores-Guerrero
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.L.F.-G.); (L.M.K.); (S.J.L.B.)
| | - Eke G. Gruppen
- Department of Internal Medicine, Division of Endocrinology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (E.G.G.); (R.P.F.D.)
| | - Lyanne M. Kieneker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.L.F.-G.); (L.M.K.); (S.J.L.B.)
| | - Margery A. Connelly
- Laboratory Corporation of America Holdings (LabCorp), Morrisville, NC 27560, USA; (M.A.C.); (J.D.O.)
| | - James D. Otvos
- Laboratory Corporation of America Holdings (LabCorp), Morrisville, NC 27560, USA; (M.A.C.); (J.D.O.)
| | - Robin P. F. Dullaart
- Department of Internal Medicine, Division of Endocrinology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (E.G.G.); (R.P.F.D.)
| | - Stephan J. L. Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.L.F.-G.); (L.M.K.); (S.J.L.B.)
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