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Stirnadel-Farrant HA, Mu G, Cooper-Blenkinsopp S, Schroyer RO, Thorneloe KS, Harrison EM, Andrews SMS. Predictive Value of Delayed Graft Function Definitions Following Donation After Circulatory Death Renal Transplantation in the United Kingdom. TRANSPLANT RESEARCH AND RISK MANAGEMENT 2022. [DOI: 10.2147/trrm.s320221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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2
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Matas AJ, Helgeson E, Fieberg A, Leduc R, Gaston RS, Kasiske BL, Rush D, Hunsicker L, Cosio F, Grande JP, Cecka JM, Connett J, Mannon RB. Risk Prediction for Delayed Allograft Function: Analysis of the Deterioration of Kidney Allograft Function (DeKAF) Study Data. Transplantation 2022; 106:358-368. [PMID: 33675321 PMCID: PMC8380757 DOI: 10.1097/tp.0000000000003718] [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] [Indexed: 02/03/2023]
Abstract
BACKGROUND Delayed graft function (DGF) of a kidney transplant results in increased cost and complexity of management. For clinical care or a DGF trial, it would be ideal to accurately predict individual DGF risk and provide preemptive treatment. A calculator developed by Irish et al has been useful for predicting population but not individual risk. METHODS We analyzed the Irish calculator (IC) in the DeKAF prospective cohort (incidence of DGF = 20.4%) and investigated potential improvements. RESULTS We found that the predictive performance of the calculator in those meeting Irish inclusion criteria was comparable with that reported by Irish et al. For cohorts excluded by Irish: (a) in pump-perfused kidneys, the IC overestimated DGF risk; (b) in simultaneous pancreas kidney transplants, the DGF risk was exceptionally low. For all 3 cohorts, there was considerable overlap in IC scores between those with and those without DGF. Using a modified definition of DGF-excluding those with single dialysis in the first 24 h posttransplant-we found that the calculator had similar performance as with the traditional DGF definition. Studying whether DGF prediction could be improved, we found that recipient cardiovascular disease was strongly associated with DGF even after accounting for IC-predicted risk. CONCLUSIONS The IC can be a useful population guide for predicting DGF in the population for which it was intended but has limited scope in expanded populations (SPK, pump) and for individual risk prediction. DGF risk prediction can be improved by inclusion of recipient cardiovascular disease.
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Affiliation(s)
- Arthur J Matas
- Transplantation Division, Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Erika Helgeson
- Biostatistics Division, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Ann Fieberg
- Biostatistics Division, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Robert Leduc
- Biostatistics Division, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Robert S Gaston
- Department of Medicine, University of Alabama, Birmingham, AL
| | | | - David Rush
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | | | - Fernando Cosio
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, Rochester, MN
| | - Joseph P Grande
- Division of Anatomic Pathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - J Michael Cecka
- Department of Pathology & Lab Medicine, David Geffen School of Medicine, University of California, UCLA Immunogenetics Center, Los Angeles, CA
| | - John Connett
- Biostatistics Division, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Roslyn B Mannon
- University of Nebraska Medical Center and VA Nebraska-Western Iowa Health Care System, Omaha, NE
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3
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Mezzolla V, Pontrelli P, Fiorentino M, Stasi A, Pesce F, Franzin R, Rascio F, Grandaliano G, Stallone G, Infante B, Gesualdo L, Castellano G. Emerging biomarkers of delayed graft function in kidney transplantation. Transplant Rev (Orlando) 2021; 35:100629. [PMID: 34118742 DOI: 10.1016/j.trre.2021.100629] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/10/2021] [Accepted: 05/24/2021] [Indexed: 01/10/2023]
Abstract
Delayed Graft Function (DGF) is one of the most common early complications in kidney transplantation, associated with poor graft outcomes, prolonged post-operative hospitalization and higher rejection rates. Given the severe shortage of high-quality organs for transplantation, DGF incidence is expected to raise in the next years because of the use of nonstandard kidneys from Extended Criteria Donors (ECD) and from Donors after Circulatory Death (DCD). Alongside conventional methods for the evaluation of renal allograft [e.g. serum creatinine Glomerular Filtration Rate (GFR), needle biopsy], recent advancements in omics technologies, including proteomics, metabolomics and transcriptomics, may allow to discover novel biomarkers associated with DGF occurrence, in order to identify early preclinical signs of renal dysfunction and to improve the quality of graft management. Here, we gather contributions from basic scientists and clinical researchers to describe new omics studies in renal transplantation, reporting the emerging biomarkers of DGF that may implement and improve conventional approaches.
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Affiliation(s)
- Valeria Mezzolla
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Paola Pontrelli
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Marco Fiorentino
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Alessandra Stasi
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Francesco Pesce
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Rossana Franzin
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Federica Rascio
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Giuseppe Grandaliano
- Department of Translational Medicine and Surgery, Università Cattolica Sacro Cuore, Rome, Italy
| | - Giovanni Stallone
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, Italy
| | - Barbara Infante
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, Italy
| | - Loreto Gesualdo
- Department of Emergency and Organ Transplantation, Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari 70124, Italy
| | - Giuseppe Castellano
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, Italy.
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4
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Abrol N, Bentall A, Torres VE, Prieto M. Simultaneous bilateral laparoscopic nephrectomy with kidney transplantation in patients with ESRD due to ADPKD: A single-center experience. Am J Transplant 2021; 21:1513-1524. [PMID: 32939958 DOI: 10.1111/ajt.16310] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/10/2020] [Accepted: 09/04/2020] [Indexed: 01/25/2023]
Abstract
Patients with autosomal dominant polycystic disease (ADPKD) may require bilateral nephrectomy (BN) in addition to kidney transplantation (KT) for symptom control. This study aims to compare simultaneous BNKT to contemporaneous controls by reviewing our cohort of ADPKD patients who underwent KT from a living donor from January 2014 to October 2019. Symptomatic patients who underwent laparoscopic BNKT were compared to KT alone. Clinical differences related to undertaking bilateral nephrectomies showed increased total kidney volumes (P < .001). We assessed operative parameters, complications, and clinical outcomes. The complications were classified according to the Clavien-Dindo system. In 148 transplant recipients, 51 underwent BNKT, and 97 KT alone. There was no difference in baseline demographics. BNKT recipients had longer cold ischemia time, required more ICU care, increased blood transfusions and longer hospital stays. The kidney function was similar in the first year in both groups, with no difference in delayed graft function, readmissions or severe grade III and IV complications within 3 months after surgery. Laparoscopic BNKT is safe and feasible at the time of living donor KT. Although higher acuity care is needed with a longer initial hospital stay, there are comparable posttransplant patient and allograft outcomes.
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Affiliation(s)
- Nitin Abrol
- The William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota.,Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Andrew Bentall
- The William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota.,Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Vicente E Torres
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Mikel Prieto
- The William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota.,Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
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5
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Montagud-Marrahi E, Molina-Andújar A, Rovira J, Revuelta I, Ventura-Aguiar P, Piñeiro G, Ugalde-Altamirano J, Perna F, Torregrosa JV, Oppenheimer F, Esforzado N, Cofán F, Campistol JM, Herrera-Garcia A, Ríos J, Diekmann F, Cucchiari D. The impact of functional delayed graft function in the modern era of kidney transplantation - A retrospective study. Transpl Int 2020; 34:175-184. [PMID: 33131120 DOI: 10.1111/tri.13781] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/10/2020] [Accepted: 10/27/2020] [Indexed: 11/27/2022]
Abstract
The dialysis-based definition of Delayed Graft Function (dDGF) is not necessarily objective as it depends on the individual physician's decision. The functional definition of DGF (fDGF, the failure of serum creatinine to decrease by at least 10% daily on 3 consecutive days during the first week post-transplant), may be more sensitive to reflect recovery after the ischemia-reperfusion injury. We retrospectively analyzed both definitions in 253 deceased donor kidney transplant recipients for predicting death-censored graft failure as primary outcome, using eGFR < 25 ml/min/1.73 m2 as a surrogate end-point for graft failure. Secondary outcome was a composite outcome that included graft failure as above and also patient's death. Median follow-up was 3.22 [2.38-4.21] years. Seventy-nine patients developed dDGF (31.2%) and 127 developed fDGF (50.2%). Sixty-three patients fulfilled criteria for both definitions (24.9%). At multivariable analysis, the two definitions were significantly associated with the primary [HR (95%CI) 2.07 (1.09-3.94), P = 0.026 for fDGF and HR (95%CI) 2.41 (1.33-4.37), P = 0.004 for dDGF] and the secondary composite outcome [HR (95%CI) 1.58 (1.01-2.51), P = 0.047 for fDGF and HR (95%CI) 1.67 (1.05-2.66), P = 0.028 for dDGF]. Patients who met criteria for both definitions had the worst prognosis, with a three-year estimates (95%CI) of survival from the primary and secondary outcomes of 2.31 (2.02-2.59) and 2.20 (1.91-2.49) years for fDGF+/dDGF+, in comparison with the other groups (P < 0.01 for trend). fDGF provides supplementary information about graft outcomes on top of the dDGF definition in a modern series of kidney transplantation.
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Affiliation(s)
| | | | - Jordi Rovira
- Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - Ignacio Revuelta
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain.,Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Gastón Piñeiro
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain
| | | | - Francesco Perna
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain
| | | | | | - Nuria Esforzado
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain
| | - Frederic Cofán
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain
| | - Josep M Campistol
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain.,Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Jose Ríos
- Medical Statistics Core Facility, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Barcelona, Spain.,Biostatistics Unit, Faculty of Medicine, Universitat Autònoma, Barcelona, Spain
| | - Fritz Diekmann
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain.,Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - David Cucchiari
- Nephrology and Renal Transplant Department, Hospital Clínic, Barcelona, Spain.,Laboratori Experimental de Nefrologia I Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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Urinary TIMP-2 Predicts the Presence and Duration of Delayed Graft Function in Donation After Circulatory Death Kidney Transplant Recipients. Transplantation 2019; 103:1014-1023. [PMID: 30300282 DOI: 10.1097/tp.0000000000002472] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Urinary tissue inhibitor of metalloproteinases-2 (TIMP-2) and insulin-like growth factor binding protein-7 (IGFBP7) have been validated as biomarkers for acute kidney injury. We investigated the performance of both markers in predicting the occurrence and duration of functionally defined delayed graft function (fDGF) in donation after circulatory death (DCD) kidney transplant recipients. METHODS Urine samples of 74 DCD recipients were analyzed. TIMP-2 and IGFBP7 were measured with ELISA on postoperative days 1 to 7, day 10, week 6, and month 6, and values were corrected for osmolality (mOsm). Immunosuppression consisted of anti-CD25 antibody induction and triple maintenance therapy (steroids, mycophenolate mofetil, and calcineurin inhibitor). Statistical analysis included receiver operating characteristic curves and multivariate logistic regression. RESULTS Fifty-one (69%) renal transplant recipients had fDGF, of which 14 experienced prolonged fDGF (≥21 days). TIMP-2/mOsm on day-1 and day-10 adequately identified patients with fDGF (area under the curve [AUC], 0.91) and prolonged fDGF (AUC, 0.80), respectively, whereas IGFBP7/mOsm did not (AUC, 0.63 and 0.60). Multivariate analysis on day 1 identified 24-hour urinary creatinine excretion and TIMP-2/mOsm as significant predictors of fDGF (AUC, 0.90, 95% confidence interval, 0.80-0.98). The best predictors of prolonged fDGF on day 10 were 24-hour urinary creatinine excretion, TIMP-2/mOsm, and total warm ischemia time with an AUC of 0.85 (95% confidence interval, 0.72-0.95). Consecutive TIMP-2/mOsm values showed a decrease in TIMP-2/mOsm before an increase in estimated glomerular filtration rate, enabling us to monitor fDGF and predict resolution of fDGF. CONCLUSIONS Urinary TIMP-2, but not IGFBP7, is a promising biomarker to predict the occurrence and duration of fDGF in DCD kidney transplant recipients.
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7
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Intraoperative Fluid Restriction is Associated with Functional Delayed Graft Function in Living Donor Kidney Transplantation: A Retrospective Cohort Analysis. J Clin Med 2019; 8:jcm8101587. [PMID: 31581669 PMCID: PMC6832291 DOI: 10.3390/jcm8101587] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/13/2019] [Accepted: 09/23/2019] [Indexed: 12/11/2022] Open
Abstract
Background: In 2016 we observed a marked increase in functional delayed graft function (fDGF) in our living donor kidney transplantation (LDKT) recipients from 8.5% in 2014 and 8.8% in 2015 to 23.0% in 2016. This increase coincided with the introduction of a goal-directed fluid therapy (GDFT) protocol in our kidney transplant recipients. Hereupon, we changed our intraoperative fluid regimen to a fixed amount of 50 mL/kg body weight (BW) and questioned whether the intraoperative fluid regimen was related to this increase in fDGF. Methods: a retrospective cohort analysis of all donors and recipients in our LDKT program between January 2014–February 2017 (n = 275 pairs). Results: Univariate analysis detected various risk factors for fDGF. Dialysis dependent recipients were more likely to develop fDGF compared to pre-emptively transplanted patients (p < 0.001). Recipients developing fDGF received less intraoperative fluid (36 (25.9–50.0) mL/kg BW vs. 47 (37.3–55.6) mL/kg BW (p = 0.007)). The GDFT protocol resulted in a reduction of intraoperative fluid administration on average by 850 mL in total volume and 21% in mL/kg BW compared to our old protocol (p < 0.001). In the unadjusted analysis, a higher intraoperative fluid volume in mL/kg BW was associated with a lower risk for the developing fDGF (OR 0.967, CI (0.941–0.993)). After adjustment for the confounders, prior dialysis and the use of intraoperative noradrenaline, the relationship of fDGF with fluid volume was still apparent (OR 0.970, CI (0.943–0.998)). Conclusion: Implementation of a GDFT protocol led to reduced intraoperative fluid administration in the LDKT recipients. This intraoperative fluid restriction was associated with the development of fDGF.
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Quintella AHDS, Lasmar MF, Fabreti-Oliveira RA, Nascimento E. Delayed Graft Function, Predictive Factors, and 7-Year Outcome of Deceased Donor Kidney Transplant Recipients With Different Immunologic Profiles. Transplant Proc 2018; 50:737-742. [PMID: 29661426 DOI: 10.1016/j.transproceed.2018.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Delayed graft function (DGF) is the major post-transplant cause of deleterious effects to the allograft and is associated with poor allograft survival. The aim of this study was to report the outcomes of 236 kidney transplant recipients with different immunologic profiles. METHODS All patients underwent transplantation (2008-2016) with a deceased donor at the University Hospital of the Faculty of Medical Science, Belo Horizonte, Minas Gerais, Brazil. Patients were classified into 3 groups according to immunologic profiles: nonsensitized (NS), sensitized without donor-specific antibody (SDSA-), or sensitized with donor-specific antibody (SDSA+). RESULTS DGF was observed in 128 (54.24%), including 63 (49.22%) NS, 51 (39.84%) SDSA-, and 14 (10.94%) SDSA+ patients. The development of DGF was associated with dialysis for ≥49.25 months (odds ratio [OR] 2.30), donor age ≥42.25 years (OR 1.77), donor end creatinine level >1.22 mg/dL (OR 1.94), and cold ischemia time >12 hours (OR 2.45). Of the 55 patients with rejections, 37 (15.68%) had T-cell-mediated rejection (TCMR) and 18 (7.63%) had antibody-mediated rejection (AMR). Nine patients (16.36%) exhibited graft loss, 2 (0.85%) via TCMR in the SDSA- DGF+ group and 7 (2.97%) via AMR, including 2 NS DGF-, 2 SDSA- DGF-, 1 SDSA- DGF+, and 2 SDSA+ DGF+ patients. Graft survival significantly differed between the NSDGF- and SDSA- DGF+ groups (P = .014) and between the NS DGF- and SDSA+ DGF- groups (P = .036). CONCLUSION In the 7-year period following transplantation, TCMR was more prevalent than AMR among patients with DGF. Graft loss was less prevalent among patients with TCMR than among those with AMR.
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Affiliation(s)
- A H D S Quintella
- University Hospital of the Faculty of Medical Science, Belo Horizonte, Minas Gerais, Brazil; Faculty of Medical Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - M F Lasmar
- University Hospital of the Faculty of Medical Science, Belo Horizonte, Minas Gerais, Brazil; Faculty of Medical Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - R A Fabreti-Oliveira
- Faculty of Medical Sciences, Belo Horizonte, Minas Gerais, Brazil; IMUNOLAB-Histocompatibility Laboratory, Belo Horizonte, Minas Gerais, Brazil
| | - E Nascimento
- Faculty of Medical Sciences, Belo Horizonte, Minas Gerais, Brazil; IMUNOLAB-Histocompatibility Laboratory, Belo Horizonte, Minas Gerais, Brazil.
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Zuk A, Palevsky PM, Fried L, Harrell FE, Khan S, McKay DB, Devey L, Chawla L, de Caestecker M, Kaufman JS, Thompson BT, Agarwal A, Greene T, Okusa MD, Bonventre JV, Dember LM, Liu KD, Humphreys BD, Gossett D, Xie Y, Norton JM, Kimmel PL, Star RA. Overcoming Translational Barriers in Acute Kidney Injury: A Report from an NIDDK Workshop. Clin J Am Soc Nephrol 2018; 13:1113-1123. [PMID: 29523680 PMCID: PMC6032575 DOI: 10.2215/cjn.06820617] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AKI is a complex clinical condition associated with high mortality, morbidity, and health care costs. Despite improvements in methodology and design of clinical trials, and advances in understanding the underlying pathophysiology of rodent AKI, no pharmacologic agent exists for the prevention or treatment of AKI in humans. To address the barriers that affect successful clinical translation of drug targets identified and validated in preclinical animal models of AKI in this patient population, the National Institute of Diabetes and Digestive and Kidney Diseases convened the "AKI Outcomes: Overcoming Barriers in AKI" workshop on February 10-12, 2015. The workshop used a reverse translational medicine approach to identify steps necessary to achieve clinical success. During the workshop, breakout groups were charged first to design feasible, phase 2, proof-of-concept clinical trials for delayed transplant graft function, prevention of AKI (primary prevention), and treatment of AKI (secondary prevention and recovery). Breakout groups then were responsible for identification of preclinical animal models that would replicate the pathophysiology of the phase 2 proof-of-concept patient population, including primary and secondary end points. Breakout groups identified considerable gaps in knowledge regarding human AKI, our understanding of the pathophysiology of AKI in preclinical animal models, and the fidelity of cellular and molecular targets that have been evaluated preclinically to provide information regarding human AKI of various etiologies. The workshop concluded with attendees defining a new path forward to a better understanding of the etiology, pathology, and pathophysiology of human AKI.
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Affiliation(s)
- Anna Zuk
- Akebia R&D, Akebia Therapeutics Inc., Cambridge, Massachusetts
| | - Paul M. Palevsky
- Department of Medicine, VA Pittsburgh Healthcare System/University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Linda Fried
- Department of Medicine, VA Pittsburgh Healthcare System/University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Frank E. Harrell
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Samina Khan
- Department of Clinical Development, Quark Pharmaceuticals, Fremont, California
| | - Dianne B. McKay
- Department of Medicine, University of California, San Diego, San Diego, California
| | - Luke Devey
- Heart Failure Discovery Performance Unit, GlaxoSmithKline, King of Prussia, Pennsylvania
| | - Lakhmir Chawla
- Department of Medicine, The George Washington University, Washington, DC
| | - Mark de Caestecker
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - James S. Kaufman
- Department of Medicine, VA New York Harbor Healthcare System, New York, New York
| | - B. Taylor Thompson
- Pulmonary and Critical Care Division, Massachusetts General Hospital, Boston, Massachusetts
| | - Anupam Agarwal
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Tom Greene
- Department of Epidemiology, University of Utah, Salt Lake City, Utah
| | - Mark Douglas Okusa
- Department of Medicine and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Joseph V. Bonventre
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Laura M. Dember
- Renal-Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kathleen D. Liu
- Department of Medicine and Nephrology, University of California San Francisco, San Francisco, California
| | - Benjamin D. Humphreys
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Daniel Gossett
- Division of Kidney, Urologic and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Yining Xie
- Division of Kidney, Urologic and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jenna M. Norton
- Division of Kidney, Urologic and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Paul L. Kimmel
- Division of Kidney, Urologic and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Robert A. Star
- Division of Kidney, Urologic and Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
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10
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Arshad A, Hodson J, Chappelow I, Inston NG, Ready AR, Nath J, Sharif A. The impact of donor body mass index on outcomes after deceased kidney transplantation - a national population-cohort study. Transpl Int 2018; 31:1099-1109. [DOI: 10.1111/tri.13263] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/08/2018] [Accepted: 04/10/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Adam Arshad
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - James Hodson
- Institute of Translational Medicine; Queen Elizabeth Hospital; Edgbaston, Birmingham UK
| | - Imogen Chappelow
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - Nicholas G. Inston
- Department of Nephrology and Transplantation; Queen Elizabeth Hospital Birmingham; Birmingham UK
| | - Andrew R. Ready
- Department of Nephrology and Transplantation; Queen Elizabeth Hospital Birmingham; Birmingham UK
| | - Jay Nath
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
- Department of Nephrology and Transplantation; Queen Elizabeth Hospital Birmingham; Birmingham UK
| | - Adnan Sharif
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
- Department of Nephrology and Transplantation; Queen Elizabeth Hospital Birmingham; Birmingham UK
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11
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Wang CJ, Tuffaha A, Phadnis MA, Mahnken JD, Wetmore JB. Association of Slow Graft Function with Long-Term Outcomes in Kidney Transplant Recipients. Ann Transplant 2018. [PMID: 29610451 PMCID: PMC6248282 DOI: 10.12659/aot.907397] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background Whether slow graft function (SGF) represents an intermediate phenotype between immediate graft function (IGF) and delayed graft function (DGF) in kidney transplant recipients is unknown. Material/Methods In a retrospective cohort analysis of 1,222 kidney transplant recipients, we classified patients as having IGF, SGF, and DGF using two different schemas. SGF was defined as serum creatinine (Cr) ≥3.0 mg/dL by postoperative day 5 in Schema 1, and in Schema 2, SGF was defined as Cr >1.5 mg/dL plus a creatinine reduction ratio <20% between postoperative days 1 and 3. A complementary log-log model was used to examine the association of graft function with graft survival and patient survival. Results Mean age of study patients was 51.5±13.3 years, 59.9% were male, and 66.7% were white. In Schema 1, SGF and DGF were associated with comparable increases in risk of graft failure compared to IGF (hazard ratio (HR) 1.46, 95% confidence intervals (CI) 1.02–2.10 for SGF and HR 1.56, CI 1.11–2.22 for IGF); estimates were similar for Schema 2 (HR 1.52, CI 1.05–2.20 for SGF and HR 1.54, CI 1.10–2.17 for IGF). However, for mortality, outcomes for SGF were similarly to IGF, both SGF and IGF were associated with lower risk relative to DGF (HR 0.54, CI 0.36–0.80 for SGF in Schema 1; HR 0.58, CI 0.39–0.85 for SGF in Schema 2). Conclusions These findings suggest that SGF may be a marker for graft failure but not for mortality, and SGF may therefore represent a phenotype separate from IGF and DGF.
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Affiliation(s)
- Connie J Wang
- Division of Nephrology, Hennepin County Medical Center, Minneapolis, MN, USA
| | - Ahmad Tuffaha
- Division of Nephrology and Hypertension, University of Kansas Medical Center, Kansas City, KS, USA.,The Kidney Institute, University of Kansas Medical Center, Kansas City, KS, USA
| | - Milind A Phadnis
- Department of Biostatistics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Jonathan D Mahnken
- Department of Biostatistics, University of Kansas Medical Center, Kansas City, KS, USA
| | - James B Wetmore
- Division of Nephrology, Hennepin County Medical Center, Minneapolis, MN, USA.,Chronic Disease Research Group, Minneapolis, MN, USA
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12
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Collange O, Jazaerli L, Lejay A, Biermann C, Caillard S, Moulin B, Chakfe N, Severac F, Schaeffer M, Mertes PM, Steib A. Intraoperative Pleth Variability Index Is Linked to Delayed Graft Function After Kidney Transplantation. Transplant Proc 2017; 48:2615-2621. [PMID: 27788791 DOI: 10.1016/j.transproceed.2016.06.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 06/22/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Delayed graft function (DGF) is an early postoperative complication of kidney transplantation (KT) predisposing to acute rejection and lower graft survival. Intraoperative arterial hypotension and hypovolemia are associated with DGF. Central venous pressure (CVP) is used to estimate volemia but its reliability has been criticized. Pleth variability index (PVI) is a hemodynamic parameter predicting fluid responsiveness. The aim of this study was to examine the relationship between intraoperative PVI and CVP values and the occurrence of DGF. METHODS This was a prospective, noninterventional, observational, single-center study. All consecutive patients with KT from deceased donors were included. Recipients received standard, CVP, and PVI monitoring. Intraoperative hemodynamic parameters were recorded from recipients at 5 time points during KT. RESULTS Forty patients were enrolled. There was a poor correlation between PVI and CVP values (r2 = 0.003; P = .44). Immediate graft function and DGF patients had similar hemodynamic values during KT, with the exception of PVI values, which were significantly higher in the DGF group. In particular, a PVI >9% before unclamping of the renal artery was the only predictive parameter of DGF in our multivariate analysis (P = .02). CONCLUSIONS This study suggests that PVI values >9% during KT are associated with the occurrence of DGF.
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Affiliation(s)
- O Collange
- Pôle d'Anesthésie, Réanimations Chirurgicales, Service d'Aide Médicale Urgente-Service Mobile d'Urgence et de Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France.
| | - L Jazaerli
- Pôle d'Anesthésie, Réanimations Chirurgicales, Service d'Aide Médicale Urgente-Service Mobile d'Urgence et de Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - A Lejay
- Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France; Service de Chirurgie Vasculaire et de Transplantation Rénale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - C Biermann
- Pôle d'Anesthésie, Réanimations Chirurgicales, Service d'Aide Médicale Urgente-Service Mobile d'Urgence et de Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - S Caillard
- Service de Néphrologie-Transplantation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - B Moulin
- Service de Néphrologie-Transplantation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - N Chakfe
- Service de Chirurgie Vasculaire et de Transplantation Rénale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - F Severac
- Département de Santé Publique, Secteur Méthodologie et Biostatistique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - M Schaeffer
- Département de Santé Publique, Secteur Méthodologie et Biostatistique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - P-M Mertes
- Pôle d'Anesthésie, Réanimations Chirurgicales, Service d'Aide Médicale Urgente-Service Mobile d'Urgence et de Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - A Steib
- Pôle d'Anesthésie, Réanimations Chirurgicales, Service d'Aide Médicale Urgente-Service Mobile d'Urgence et de Réanimation, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
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13
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McKane WS. Should Nephrologists Promote Peritoneal Dialysis as a Bridge to Transplantation? Perit Dial Int 2017; 37:247-249. [PMID: 28512161 DOI: 10.3747/pdi.2016.00269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- William S McKane
- Sheffield Kidney Institute, Northern General Hospital, Sheffield, UK
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14
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Kramer AH, Baht R, Doig CJ. Time trends in organ donation after neurologic determination of death: a cohort study. CMAJ Open 2017; 5:E19-E27. [PMID: 28401114 PMCID: PMC5378522 DOI: 10.9778/cmajo.20160093] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The cause of brain injury may influence the number of organs that can be procured and transplanted with donation following neurologic determination of death. We investigated whether the distribution of causes responsible for neurologic death has changed over time and, if so, whether this has had an impact on organ quality, transplantation rates and recipient outcomes. METHODS We performed a cohort study involving consecutive brain-dead organ donors in southern Alberta between 2003 and 2014. For each donor, we determined last available measures of organ injury and number of organs transplanted, and compared these variables for various causes of neurologic death. We compared trends to national Canadian data for 2000-2013 (2000-2011 for Quebec). RESULTS There were 226 brain-dead organ donors over the study period, of whom 100 (44.2%) had anoxic brain injury, 63 (27.9%) had stroke, and 51 (22.6%) had traumatic brain injury. The relative proportion of donors with traumatic brain injury decreased over time (> 30% in 2003-2005 v. 6%-23% in 2012-2014) (p = 0.004), whereas that with anoxic brain injury increased (14%-37% v. 46%-80%, respectively) (p < 0.001). Nationally, the annual number of brain-dead donors with traumatic brain injury decreased from 4.4 to less than 3 per million population between 2000 and 2013, and that with anoxic brain injury increased from 1.1 to 3.1 per million. Donors with anoxic brain injury had higher concentrations of creatinine, alanine aminotransferase and troponin T, and lower PaO2/FIO2 and urine output than donors with other diagnoses. The average number of organs transplanted per donor was 3.6 with anoxic brain injury versus 4.5 with traumatic brain injury or stroke (p = 0.002). INTERPRETATION Anoxic brain injury has become a leading cause of organ donation after neurologic determination of death in Canada. Organs from donors with anoxic brain injury have a greater degree of injury, and fewer are transplanted. These findings have implications for availability of organs for transplantation in patients with end-stage organ failure.
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Affiliation(s)
- Andreas H Kramer
- Departments of Critical Care Medicine (Kramer, Doig) and Clinical Neurosciences (Kramer), University of Calgary; Southern Alberta Organ and Tissue Donation Program (Kramer, Baht); Department of Community Health Sciences (Doig), University of Calgary, Calgary, Alta
| | - Ryan Baht
- Departments of Critical Care Medicine (Kramer, Doig) and Clinical Neurosciences (Kramer), University of Calgary; Southern Alberta Organ and Tissue Donation Program (Kramer, Baht); Department of Community Health Sciences (Doig), University of Calgary, Calgary, Alta
| | - Christopher J Doig
- Departments of Critical Care Medicine (Kramer, Doig) and Clinical Neurosciences (Kramer), University of Calgary; Southern Alberta Organ and Tissue Donation Program (Kramer, Baht); Department of Community Health Sciences (Doig), University of Calgary, Calgary, Alta
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15
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Bentall A, R Barnett AN, Braitch M, Kessaris N, McKane W, Newstead C, McHaffie G, Brown A, Griffin S, Mamode N, Briggs D, Ball S. Clinical outcomes with ABO antibody titer variability in a multicenter study of ABO-incompatible kidney transplantation in the United Kingdom. Transfusion 2016; 56:2668-2679. [PMID: 27562458 DOI: 10.1111/trf.13770] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/04/2016] [Accepted: 07/01/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND ABO blood group-incompatible kidney transplantation (ABOiKTx) outcomes are good, but complications are more common than in conventional transplantation. Regimens that use extracorporeal antibody removal therapy (EART) and enhanced immunosuppression are guided by titration of ABO blood group antibodies (using hemagglutination [HA] dilution assays), and these assays vary significantly in performance between centers. This study aims to describe the differences in titer measurement and the effect on clinical practice and outcomes. STUDY DESIGN AND METHODS This multicentre, prospective cohort study of 100 ABOiKTx recipients assessed treatment and outcome data, including HA assay results measured retrospectively in a single central laboratory. RESULTS Patient and allograft survival at 1 year was 99% and 94%, respectively. There were significant differences in the number of pretransplantation EART sessions in centers undertaking plasma exchange (PEx), compared with immunoadsorption (IA) (median, 6 vs. 4 sessions; p = 0.007). The pre-EART HA titer in both groups was the same when centrally assayed. The local HA assay used to guide treatment yielded significantly higher titers in centers undertaking PEx compared with IA (median, 128 vs. 32; p < 0.005). Patients undergoing PEx rather than IA were significantly more likely to suffer postoperative hematoma (12.9% vs. 1.8%; p = 0.05) or any perioperative collection requiring drainage (19.4% vs. 3.6%; p = 0.02). CONCLUSION The colinearity of HA assay sensitivity with the receipt of PEx and EART limits some conclusions regarding the likely direction of causation. However, the association of differences in clinical practice with recognized perioperative complications of ABOiKTx identifies targets for further investigation and quality improvement.
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Affiliation(s)
- Andrew Bentall
- Department of Renal Medicine, Queen Elizabeth Hospital.,School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - A Nicholas R Barnett
- Department of Transplantation, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Manjit Braitch
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Nicos Kessaris
- Department of Transplantation, Guy's and St Thomas' Hospital, London, United Kingdom
| | - Will McKane
- Sheffield Kidney Institute, Sheffield Teaching Hospitals, Sheffield, United Kingdom
| | - Chas Newstead
- Department of Nephrology and Transplantation, Leeds Teaching Hospitals National Health Service Trust, Leeds, United Kingdom
| | - Gavin McHaffie
- Department of Nephrology and Transplantation, Nottingham, United Kingdom
| | - Alison Brown
- Department of Nephrology and Transplantation, Newcastle, United Kingdom
| | - Sian Griffin
- Department of Nephrology and Transplantation, Cardiff, United Kingdom
| | - Nizam Mamode
- Department of Transplantation, Guy's and St Thomas' Hospital, London, United Kingdom
| | - David Briggs
- Department of Histocompatibility and Immunogenetics, National Health Service Blood and Transplant, Birmingham Centre, Birmingham, United Kingdom
| | - Simon Ball
- Department of Renal Medicine, Queen Elizabeth Hospital.,School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
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16
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Weerakkody RM, Lokuliyana PN, Sheriff MHR. Acute renal failure during immediate post transplant period due to a pericardial effusion. BMC Res Notes 2015; 8:587. [PMID: 26486858 PMCID: PMC4618369 DOI: 10.1186/s13104-015-1571-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 10/09/2015] [Indexed: 12/23/2022] Open
Abstract
Background Pericardial effusions and acute renal failure are common findings in clinical practice. However, acute renal failure resulting from pericardial effusions (without tamponade) is a rare finding. We report the first such case to occur in a transplanted kidney. Case presentation A 20-year-old Sri Lankan male presented with hypertensive crisis in the background of end stage renal failure. He was thoroughly investigated for secondary causes of hypertension to no avail. He was hemodialysed adequately for 6 months, while being worked up for transplantation. He received an ABO matched, living donor transplant. Immediate post-operative period his urine outputs were poor, soon to became anuric by 6 h post-transplant. Elevated liver enzymes and non-specific increase of resistivity indexes (0.84–0.88) at the Doppler scan raised the possibility of venous hypertension. An echocardiogram showed a moderately large pericardial effusion which was tapped, and found to be a transudate. He started producing urine within 6 h, entered polyuric phase by day 3, and by day 7 his creatinine dropped to reference levels. Vasculitis screen, anti nuclear factor, viral screen, and rickettsia serology were negative. Albumin levels on day 2 were 27 g/l and were replaced using human albumin. The exact cause of pericardial effusion is unclear but hypoalbuminemia, drug-induced and idiopathic are possible causes. He has excellent graft function, no recurrences or constrictive pericarditis after 2 years follow. Conclusion We recommend any patient who has delayed graft function and raised central venous pressures to have an echocardiogram to exclude pericardial effusions. The response to pericardiocentesis had been universally good in reported cases.
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Affiliation(s)
- Ranga Migara Weerakkody
- University Medical Unit, National Hospital of Sri Lanka, Regent Street, Colombo 9, Sri Lanka.
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17
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Waheed S, Sakr A, Chheda ND, Lucas GM, Estrella M, Fine DM, Atta MG. Outcomes of Renal Transplantation in HIV-1 Associated Nephropathy. PLoS One 2015; 10:e0129702. [PMID: 26061701 PMCID: PMC4463848 DOI: 10.1371/journal.pone.0129702] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/12/2015] [Indexed: 12/02/2022] Open
Abstract
Introduction Several studies have demonstrated that renal transplantation in HIV positive patients is both safe and effective. However, none of these studies have specifically examined outcomes in patients with HIV-associated nephropathy (HIVAN). Methods Medical records of all HIV-infected patients who underwent kidney transplantation at Johns Hopkins Hospital between September 2006 and January 2014 were reviewed. Data was collected to examine baseline characteristics and outcomes of transplant recipients with HIVAN defined pathologically as collapsing focal segmental glomerulosclerosis (FSGS) with tubulo-interstitial disease. Results and Discussion During the study period, a total of 16 patients with HIV infection underwent renal transplantation. Of those, 11 patients were identified to have biopsy-proven HIVAN as the primary cause of their end stage renal disease (ESRD) and were included in this study. They were predominantly African American males with a mean age of 47.6 years. Seven (64%) patients developed delayed graft function (DGF), and 6 (54%) patients required post-operative dialysis within one week of transplant. Graft survival rates at 1 and 3 years were 100% and 81%, respectively. Acute rejection rates at 1 and 3 years were 18% and 27%, respectively. During a mean follow up of 3.4 years, one patient died. Conclusions Acute rejection rates in HIVAN patients in this study are higher than reported in the general ESRD population, which is similar to findings from prior studies of patients with HIV infection and ESRD of various causes. The high rejection rates appear to have no impact on short or intermediate term graft survival.
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Affiliation(s)
- Sana Waheed
- Medicine, University of Wisconsin School of Medicine, Madison, Wisconsin, United States of America
| | - Ahmad Sakr
- Ain Shams Faculty of Medicine, Cairo, Egypt
| | - Neha D. Chheda
- Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Gregory M. Lucas
- Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Michelle Estrella
- Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Derek M. Fine
- Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Mohamed G. Atta
- Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
- * E-mail:
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18
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Defining delayed graft function after renal transplantation: simplest is best. Transplantation 2014; 96:885-9. [PMID: 24056620 DOI: 10.1097/tp.0b013e3182a19348] [Citation(s) in RCA: 214] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Delayed graft function (DGF) after renal transplantation can be diagnosed according to several different definitions, complicating comparison between studies that use DGF as an endpoint. This is a particular problem after transplantation with kidneys from donation after circulatory death (DCD) kidneys, because DGF is common, and its relationship to early graft failure may differ depending on the definition of DGF. METHODS The presence of DGF in 213 donation after brain death (DBD) and 312 DCD kidney transplants from October 2005 to August 2011 was determined according to 10 different, but widely used, definitions (based on dialysis requirements, creatinine changes, or both). The relationship of DGF to graft function and graft survival was determined. RESULTS The incidence of DGF varied widely depending on the definition used (DBD; 24%-70%: DCD; 41%-91%). For kidneys from DCD donors, development of DGF was only associated with poorer 1-year estimated glomerular filtration rate for 1 of 10 definitions of DGF, and no definition of DGF was associated with impaired graft survival. Conversely, for DBD kidneys, DGF, as defined in 9 of 10 different ways, was associated with poorer 1-year estimated glomerular filtration rate and inferior graft survival. Importantly, the predictive power for poorer transplant outcome was comparable for all definitions of DGF. CONCLUSION No definition of DGF is superior. We suggest that the most widely used and most easily calculated definition--the use of dialysis in the first postoperative week--should be universally adopted as the definition of DGF clinically and as a study endpoint.
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19
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Ponticelli C. Ischaemia-reperfusion injury: a major protagonist in kidney transplantation. Nephrol Dial Transplant 2013; 29:1134-40. [PMID: 24335382 DOI: 10.1093/ndt/gft488] [Citation(s) in RCA: 200] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ischaemia-reperfusion injury (IRI) is a frequent event in kidney transplantation, particularly when the kidney comes from a deceased donor. The brain death is usually associated with generalized ischaemia due to a hyperactivity of the sympathetic system. In spite of this, most donors have profound hypotension and require administration of vasoconstrictor agents. Warm ischaemia after kidney vessels clamping and the cold ischaemia after refrigeration also reduce oxygen and nutrients supply to tissues. The reperfusion further aggravates the state of oxidation and inflammation created by ischaemia. IRI first attacks endothelial cells and tubular epithelial cells. The lesions may be so severe that they lead to acute kidney injury (AKI) and delayed graft function (DGF), which can impair the graft survival. The unfavourable impact of DGF is worse when DGF is associated with acute rejection. Another consequence of IRI is the activation of the innate immunity. Danger signals released by dying cells alarm Toll-like receptors that, through adapter molecules and a chain of kinases, transmit the signal to transcription factors which encode the genes regulating inflammatory cells and mediators. In the inflammatory environment, dendritic cells (DCs) intercept the antigen, migrate to lymph nodes and present the antigen to immunocompetent cells, so activating the adaptive immunity and favouring rejection. Attempts to prevent IRI include optimal management of donor and recipient. Calcium-channel blockers, l-arginine and N-acetylcysteine could obtain a small reduction in the incidence of post-transplant DGF. Fenoldopam, Atrial Natriuretic Peptide, Brain Natriuretic Peptide and Dopamine proved to be helpful in reducing the risk of AKI in experimental models, but there is no controlled evidence that these agents may be of benefit in preventing DGF in kidney transplant recipients. Other antioxidants have been successfully used in experimental models of AKI but only a few studies of poor quality have been made in clinical transplantation with a few of these agents and we still lack of unambiguous demonstration that pre-treatment with these antioxidants can attenuate the impact of IRI in kidney transplantation. Interference with the signals leading to activation of innate immunity, inactivation of complement or manipulation of DCs is a promising therapeutic option for the near future.
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20
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O'Callaghan JM, Morgan RD, Knight SR, Morris PJ. Systematic review and meta-analysis of hypothermic machine perfusion versus static cold storage of kidney allografts on transplant outcomes. Br J Surg 2013; 100:991-1001. [PMID: 23754643 DOI: 10.1002/bjs.9169] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 05/08/2012] [Accepted: 04/11/2013] [Indexed: 02/05/2023]
Abstract
BACKGROUND Adequate preservation of renal allografts for transplantation is important for maintaining and improving transplant outcomes. There are two prevalent methods: hypothermic machine perfusion and static cold storage. The preferred method of storage, however, remains controversial. The objective was to review systematically the evidence comparing outcomes from these two modalities. METHODS A literature search was performed using MEDLINE, Embase, the Cochrane Library, the Transplant Library and the International Clinical Trials Registry Platform. The final date for searches was 30 November 2012. Studies were assessed for methodological quality. Summary effects were calculated as relative risk (RR) with 95 per cent confidence interval (c.i.). Randomized clinical trials (RCTs) and non-RCTs were included, but evaluated separately. Results from RCTs alone were used for meta-analysis. RESULTS Eighteen studies met the inclusion criteria, including seven RCTs (1475 kidneys) and 11 non-RCTs (728 kidneys). The overall risk of delayed graft function was lower with hypothermic machine perfusion than static cold storage (RR 0·81, 95 per cent c.i. 0·71 to 0·92; P = 0·002). There was no difference in the rate of primary non-function (RR 1·15, 0·46 to 2·90; P = 0·767). There was a faster initial fall in the level of serum creatinine with hypothermic machine perfusion in two RCTs, but not in another. There was no relationship between rates of acute rejection or patient survival and the method of preservation. CONCLUSION Data from the included studies suggest that hypothermic machine perfusion reduces delayed graft function compared with static cold storage. There was no difference in primary non-function, acute rejection, long-term renal function or patient survival. A difference in renal graft survival is uncertain.
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Affiliation(s)
- J M O'Callaghan
- Centre for Evidence in Transplantation, Royal College of Surgeons of England and London School of Hygiene and Tropical Medicine, University of London, London, UK.
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21
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Harraz A, Shokeir A, Soliman S, El-Hefnawy A, Kamal M, Shalaby I, Kamal A, Ghoneim M. Fate of Accessory Renal Arteries in Grafts with Multiple Renal Arteries during Live-Donor Renal Allo-Transplantation. Transplant Proc 2013; 45:1232-6. [DOI: 10.1016/j.transproceed.2013.02.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Sharif A, Borrows R. Delayed graft function after kidney transplantation: the clinical perspective. Am J Kidney Dis 2013; 62:150-8. [PMID: 23391536 DOI: 10.1053/j.ajkd.2012.11.050] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 11/14/2012] [Indexed: 11/11/2022]
Abstract
Delayed graft function continues to pose a significant challenge to clinicians in the context of kidney transplantation. With the present disparity between supply and demand for organs, transplantation is proceeding with more marginal kidneys and therefore the problem of delayed graft function is likely to increase in the future. Although our understanding of the mechanism and risk factors for delayed graft function has improved, translation of this understanding into targeted clinical therapy to attenuate or manage established delayed graft function has been elusive. Based on current trends, the use of kidneys from expanded criteria or cardiac death donors will continue to expand, which will increase the prevalence of delayed graft function in the immediate postoperative setting. The aim of this article is to discuss and critique the available clinical evidence for targeted intervention in the prevention and management of delayed graft function and review emerging and experimental therapies.
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Affiliation(s)
- Adnan Sharif
- Department of Nephrology and Kidney Transplantation, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
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23
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Cantaluppi V, Biancone L, Quercia A, Deregibus MC, Segoloni G, Camussi G. Rationale of mesenchymal stem cell therapy in kidney injury. Am J Kidney Dis 2012; 61:300-9. [PMID: 22938846 DOI: 10.1053/j.ajkd.2012.05.027] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 05/23/2012] [Indexed: 01/06/2023]
Abstract
Numerous preclinical and clinical studies suggest that mesenchymal stem cells, also known as multipotent mesenchymal stromal cells (MSCs), may improve pathologic conditions involving different organs. These beneficial effects initially were ascribed to the differentiation of MSCs into organ parenchymal cells. However, at least in the kidney, this is a very rare event and the kidney-protective effects of MSCs have been attributed mainly to paracrine mechanisms. MSCs release a number of trophic, anti-inflammatory, and immune-modulatory factors that may limit kidney injury and favor recovery. In this article, we provide an overview of the biologic activities of MSCs that may be relevant for the treatment of kidney injury in the context of a case vignette concerning a patient at high immunologic risk who underwent a second kidney transplantation followed by the development of ischemia-reperfusion injury and acute allograft rejection. We discuss the possible beneficial effect of MSC treatment in the light of preclinical and clinical data supporting the regenerative and immunomodulatory potential of MSCs.
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Affiliation(s)
- Vincenzo Cantaluppi
- Nephrology, Dialysis and Renal Transplantation Unit, Centre for Experimental Medical Research (CeRMS) and Department of Internal Medicine, University of Torino, Torino, Italy
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Toward a Standardized System for Reporting Surgical Outcome of Pediatric and Adolescent Live Donor Renal Allotransplantation. J Urol 2012; 187:1041-6. [DOI: 10.1016/j.juro.2011.10.161] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Indexed: 11/21/2022]
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Domenici A, Comunian MC, Fazzari L, Sivo F, Dinnella A, Della Grotta B, Punzo G, Menè P. Incremental peritoneal dialysis favourably compares with hemodialysis as a bridge to renal transplantation. Int J Nephrol 2011; 2011:204216. [PMID: 21941652 PMCID: PMC3173956 DOI: 10.4061/2011/204216] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2011] [Revised: 06/29/2011] [Accepted: 07/14/2011] [Indexed: 11/23/2022] Open
Abstract
Background. The value of incremental peritoneal dialysis (PD) as a bridge to renal transplantation (Tx) has not been specifically addressed. Methods. All consecutive Stage 5 CKD patients with at least 1 year predialysis followup, starting incremental PD or HD under our care and subsequently receiving their first renal Tx were included in this observational cohort study. Age, gender, BMI, underlying nephropathy, residual renal function (RRF) loss rate before dialysis and RRF at RRT start, comorbidity, RRT schedules and adequacy measures, dialysis-related morbidity, Tx waiting time, RRF at Tx, incidence of delayed graft function (DGF), in-hospital stay for Tx, serum creatinine at discharge and one year later were collected and compared between patients on incremental PD or HD before Tx. Results. Seventeen patients on incremental PD and 24 on HD received their first renal Tx during the study period. Age, underlying nephropathy, RRF loss rate in predialysis, RRF at the start of RRT and comorbidity did not differ significantly. While on dialysis, patients on PD had significantly lower epoetin requirements, serum phosphate, calciumxphosphate product and better RRF preservation. Delayed graft function (DGF) occurred in 12 patients (29%), 1 on incremental PD and 11 on HD. Serum creatinine at discharge and 1 year later was significantly higher in patients who had been on HD. Conclusions. In patients receiving their first renal Tx, previous incremental PD was associated with low morbidity, excellent preservation of RRF, easier attainment of adequacy targets and significantly better immediate and 1-year graft function than those observed in otherwise well-matched patients previously treated with HD.
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Affiliation(s)
- Alessandro Domenici
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Maria Cristina Comunian
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Loredana Fazzari
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Francesca Sivo
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Angela Dinnella
- Peritoneal Dialysis Regional Referral Centre, Nephrology and Dialysis Unit, Civic Hospital, 00042 Anzio, Italy
| | - Barbara Della Grotta
- Peritoneal Dialysis Regional Referral Centre, Nephrology and Dialysis Unit, Civic Hospital, 00042 Anzio, Italy
| | - Giorgio Punzo
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Paolo Menè
- Nephrology and Dialysis Unit, Department of Cardiovascular, Renal and Pulmonary Diseases, Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
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Mas VR, Scian MJ, Archer KJ, Suh JL, David KG, Ren Q, Gehr TWB, King AL, Posner MP, Mueller TF, Maluf DG. Pretransplant transcriptome profiles identify among kidneys with delayed graft function those with poorer quality and outcome. Mol Med 2011; 17:1311-22. [PMID: 21912807 DOI: 10.2119/molmed.2011.00159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 09/02/2011] [Indexed: 11/06/2022] Open
Abstract
Robust biomarkers are needed to identify donor kidneys with poor quality associated with inferior early and longer-term outcome. The occurrence of delayed graft function (DGF) is most often used as a clinical outcome marker to capture poor kidney quality. Gene expression profiles of 92 preimplantation biopsies were evaluated in relation to DGF and estimated glomerular filtration rate (eGFR) to identify preoperative gene transcript changes associated with short-term function. Patients were stratified into those who required dialysis during the first week (DGF group) versus those without (noDGF group) and subclassified according to 1-month eGFR of >45 mL/min (eGFR(hi)) versus eGFR of ≤45 mL/min (eGFR(lo)). The groups and subgroups were compared in relation to clinical donor and recipient variables and transcriptome-associated biological pathways. A validation set was used to confirm target genes. Donor and recipient characteristics were similar between the DGF versus noDGF groups. A total of 206 probe sets were significant between groups (P < 0.01), but the gene functional analyses failed to identify any significantly affected pathways. However, the subclassification of the DGF and noDGF groups identified 283 probe sets to be significant among groups and associated with biological pathways. Kidneys that developed postoperative DGF and sustained an impaired 1-month function (DGF(lo) group) showed a transcriptome profile of significant immune activation already preimplant. In addition, these kidneys maintained a poorer transplant function throughout the first-year posttransplant. In conclusion, DGF is a poor marker for organ quality and transplant outcome. In contrast, preimplant gene expression profiles identify "poor quality" grafts and may eventually improve organ allocation.
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Affiliation(s)
- Valeria R Mas
- Department of Surgery, Hume-Lee Transplant Center, Virginia Commonwealth University, Richmond, Virginia, United States of America.
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