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Verdiales C, Baxter L, Lim HJ, Beck G, Moser MA. Matched pair analysis of the effect of longer hypothermic machine perfusion time on kidney transplant outcomes. World J Transplant 2024; 14:95233. [DOI: 10.5500/wjt.v14.i3.95233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/31/2024] [Accepted: 06/26/2024] [Indexed: 07/31/2024] Open
Abstract
BACKGROUND Hypothermic machine perfusion (HMP) has demonstrated benefits in terms of early kidney transplant function compared to static cold storage. While longer preservation times have shown detrimental effects, a previous paired study indicated that longer pump times (the second kidney in a pair) might lead to improved outcomes.
AIM To revisit the prior paired study's somewhat unexpected results by reviewing our program's experience.
METHODS A total of 61 pairs of transplant recipients who received kidneys from the same donor (2012-2021) were analyzed. Patients were divided into two groups depending on whether they were transplanted first (K1) or second (K2). Therefore, the patients in each pair had identical donor characteristics, except for time on the pump. Statistical analyses included Kaplan-Meyer analysis and paired tests, including McNemar's test, student's paired t-test, or Wilcoxon's test, as appropriate.
RESULTS The two groups of recipients had similar demographics (age, body mass index, diabetes, time on dialysis, sensitization and retransplants). Cold ischemic times for K1 and K2 were 8.9 (95%CI: 7.9, 9.8) and 14.7 hours (13.7, 15.8) (P < 0.0001), respectively. Overall, K2 had a higher rate of freedom from biopsy-proven acute rejection at 1 year (P = 0.015). Delayed graft function was less common in K2, 12/61 (20%) than in K1, 20/61 (33%) (P = 0.046). Finally, K2 showed a higher graft survival than K1 (P = 0.023).
CONCLUSION Our results agree with a previous study that suggested possible advantages to longer pump times. Both studies should encourage further research into HMP's potential anti-inflammatory effect.
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Affiliation(s)
- Carlos Verdiales
- Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W8, Canada
| | - Luke Baxter
- College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W8, Canada
- Canada and Northern Ontario School of Medicine, Thunder Bay, Ontario P7B 5E1, Canada
| | - Hyun Ja Lim
- Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W8, Canada
| | - Gavin Beck
- Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W8, Canada
| | - Michael A Moser
- Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W8, Canada
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2
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Ciancio G, Tabbara MM, Gonzalez J, Alvarez A, Gaynor JJ. Surgical modifications to the conventional kidney transplant technique: the Miami Transplant Institute approach in a retrospective cohort study. Int J Surg 2024; 110:4839-4849. [PMID: 38597387 PMCID: PMC11325953 DOI: 10.1097/js9.0000000000001457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 03/31/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND At our center, surgical modifications to the conventional kidney transplant technique were developed with two goals in mind: to minimize the risk of developing post-transplant urologic/vascular/other surgical complications, and to simultaneously eliminate the need for initial ureteral stent placement and surgical drainage. METHODS Here, the authors describe these modifications along with (what we believe are) their advantages over the conventional technique: creating an abdominal flap for easier abdominal closure (reflecting the parietal peritoneum from the abdominal wall), mobilizing the bladder before transplant (creating more space for bladder dissection, allowing it to move upward during abdominal wall closure), minimizing the dissection of iliac vessels to only anterior lymphatic tissue (attempting to minimize the incidence of fluid collections), using plastic arterial vascular bulldog clamps (causing less trauma to the iliac artery), performing vascular anastomosis of the renal artery first (making it easier for the surgeon to perform the anastomoses), creating longer ureteral spatulation, and inclusion of bladder mucosa along with some detrusor muscle layer in performing the ureteral anastomosis (attempting to minimize the incidence of urologic complications). Of note, no initial ureteral stent placement or surgical drainage was used. The authors report our experience during the first 12 months post-transplant of a single transplant surgeon who used each of these modifications among 707 consecutive recipients of kidney-alone transplants at our center since 2014. RESULTS During the first 12 months post-transplant, 2.3% (16/707) of patients developed a urologic complication; only 1.0% (7/707) required surgical repair of their original ureteroneocystostomy. Additionally, 2.7% (19/707) developed a vascular complication; 8.8% (62/707) developed some other type of surgical complication (wound complication, lymphocele development, or development of a peri-renal hematoma or peri-renal collection). These overall results were advantageous when compared with other studies. CONCLUSION The authors believe that this modified kidney transplant technique clearly helped in reducing post-transplant risks of developing urologic/vascular/other surgical complications. Importantly, these results were achieved without initial ureteral stent placement or surgical drainage.
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Affiliation(s)
- Gaetano Ciancio
- Department of Surgery
- Department of Urology
- Miami Transplant Institute, University of Miami Miller School of Medicine
- Department of Surgery and Urology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami Florida, USA
| | - Marina M Tabbara
- Department of Surgery
- Miami Transplant Institute, University of Miami Miller School of Medicine
| | - Javier Gonzalez
- Department of Urology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Angel Alvarez
- Miami Transplant Institute, University of Miami Miller School of Medicine
| | - Jeffrey J Gaynor
- Department of Surgery
- Miami Transplant Institute, University of Miami Miller School of Medicine
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3
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Schnuelle P, Krämer BK. Donor Conditioning and Organ Pre-Treatment Prior to Kidney Transplantation: Reappraisal of the Available Clinical Evidence. J Clin Med 2024; 13:4073. [PMID: 39064113 PMCID: PMC11278301 DOI: 10.3390/jcm13144073] [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: 06/11/2024] [Revised: 07/01/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
Therapeutic measures aimed at optimising organ function prior to transplantation-whether by conditioning the donor after determination of brain death or by improving organ preservation after kidney removal-have the potential to enhance outcomes after transplantation. The particular advantage is that, unlike any optimised immunosuppressive therapy, a favourable effect can be achieved without side effects for the organ recipient. In recent years, several such measures have been tested in controlled clinical trials on large patient cohorts following kidney transplantation. Hypothermic pulsatile machine perfusion, in particular, has become the focus of interest, but interventions in the donor prior to organ removal, such as the administration of low-dose dopamine until the start of cold perfusion as an example of conditioning antioxidant therapy and therapeutic donor hypothermia in the intensive care unit after brain death confirmation, have also significantly reduced the frequency of dialysis after transplantation with far less effort and cost. With regard to benefits for graft survival, the database for all procedures is less clear and controversial. The aim of this review article is to re-evaluate the available clinical evidence from large multicentre controlled trials, which have also significantly influenced later meta-analyses, and to assess the significance for use in routine clinical practice.
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Affiliation(s)
- Peter Schnuelle
- Center for Renal Diseases, Academic Teaching Practice of the University Medical Center Mannheim, University of Heidelberg, 69469 Weinheim, Germany
- Vth Department of Medicine, University Medical Center Mannheim, University of Heidelberg, 68167 Mannheim, Germany;
| | - Bernhard K. Krämer
- Vth Department of Medicine, University Medical Center Mannheim, University of Heidelberg, 68167 Mannheim, Germany;
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4
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Sampaio NZ, Faleiro MD, Vieira LVDS, Lech GE, Viana SW, Tavares CPO, Mattiazzi AD, Burke GW. Simultaneous Heart and Kidney Transplantation: A Systematic Review and Proportional Meta-Analysis of Its Characteristics and Long-Term Variables. Transpl Int 2024; 37:12750. [PMID: 38881801 PMCID: PMC11176494 DOI: 10.3389/ti.2024.12750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 05/13/2024] [Indexed: 06/18/2024]
Abstract
Patients with end-stage heart disease who undergo a heart transplant frequently have simultaneous kidney insufficiency, therefore simultaneous heart and kidney transplantation is an option and it is necessary to understand its characteristics and long-term variables. The recipient characteristics and operative and long-term variables were assessed in a meta-analysis. A total of 781 studies were screened, and 33 were thoroughly reviewed. 15 retrospective cohort studies and 376 patients were included. The recipient's mean age was 51.1 years (95% CI 48.52-53.67) and 84% (95% CI 80-87) were male. 71% (95% CI 59-83) of the recipients were dialysis dependent. The most common indication was ischemic cardiomyopathy [47% (95% CI 41-53)] and cardiorenal syndrome [22% (95% CI 9-35)]. Also, 33% (95% CI 20-46) of the patients presented with delayed graft function. During the mean follow-up period of 67.49 months (95% CI 45.64-89.33), simultaneous rejection episodes of both organ allografts were described in 5 cases only. Overall survival was 95% (95% CI 88-100) at 30 days, 81% (95% CI 76-86) at 1 year, 79% (95% CI 71-87) at 3, and 71% (95% CI 59-83) at 5 years. Simultaneous heart and kidney transplantation is an important option for concurrent cardiac and renal dysfunction and has acceptable rejection and survival rates.
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Affiliation(s)
| | | | | | - Gabriele Eckerdt Lech
- Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Adela D. Mattiazzi
- Leonard M. Miller School of Medicine, University of Miami, Miami, FL, United States
| | - George W. Burke
- Leonard M. Miller School of Medicine, University of Miami, Miami, FL, United States
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5
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Jadlowiec CC, Thongprayoon C, Tangpanithandee S, Punukollu R, Leeaphorn N, Cooper M, Cheungpasitporn W. Re-assessing prolonged cold ischemia time in kidney transplantation through machine learning consensus clustering. Clin Transplant 2024; 38:e15201. [PMID: 38041480 DOI: 10.1111/ctr.15201] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/13/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND We aimed to cluster deceased donor kidney transplant recipients with prolonged cold ischemia time (CIT) using an unsupervised machine learning approach. METHODS We performed consensus cluster analysis on 11 615 deceased donor kidney transplant patients with CIT exceeding 24 h using OPTN/UNOS data from 2015 to 2019. Cluster characteristics of clinical significance were identified, and post-transplant outcomes were compared. RESULTS Consensus cluster analysis identified two clinically distinct clusters. Cluster 1 was characterized by young, non-diabetic patients who received kidney transplants from young, non-hypertensive, non-ECD deceased donors with lower KDPI scores. In contrast, the patients in cluster 2 were older and more likely to have diabetes. Cluster 2 recipients were more likely to receive transplants from older donors with a higher KDPI. There was lower use of machine perfusion in Cluster 1 and incrementally longer CIT in Cluster 2. Cluster 2 had a higher incidence of delayed graft function (42% vs. 29%), and lower 1-year patient (95% vs. 98%) and death-censored (95% vs. 97%) graft survival compared to Cluster 1. CONCLUSIONS Unsupervised machine learning characterized deceased donor kidney transplant recipients with prolonged CIT into two clusters with differing outcomes. Although Cluster 1 had more favorable recipient and donor characteristics and better survival, the outcomes observed in Cluster 2 were also satisfactory. Overall, both clusters demonstrated good survival suggesting opportunities for transplant centers to incrementally increase CIT.
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Affiliation(s)
| | - Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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6
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Ciancio G, Gaynor JJ, Guerra G, Tabbara MM, Roth D, Kupin W, Mattiazzi A, Moni L, Burke GW. Long-term effects of average calcineurin inhibitor trough levels (over time) on renal function in a prospectively followed cohort of 150 kidney transplant recipients. Clin Transl Sci 2023; 16:2382-2393. [PMID: 37817405 PMCID: PMC10651634 DOI: 10.1111/cts.13639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 10/12/2023] Open
Abstract
More favorable clinical outcomes with medium-term follow-up have been reported among kidney transplant recipients receiving maintenance therapy consisting of "reduced-tacrolimus (TAC) dosing," mycophenolate mofetil (MMF), and low-dose corticosteroids. However, it is not clear whether long-term maintenance therapy with reduced-calcineurin inhibitor (CNI) dosing still leads to reduced renal function. A prospectively followed cohort of 150 kidney transplant recipients randomized to receive TAC/sirolimus (SRL) versus TAC/MMF versus cyclosporine microemulsion (CSA)/SRL, plus low-dose maintenance corticosteroids, now has 20 years of post-transplant follow-up. Average CNI trough levels over time among patients who were still alive with functioning grafts at 60, 120, and 180 months post-transplant were determined and ranked from smallest-to-largest for both TAC and CSA. Stepwise linear regression was used to determine whether these ranked average trough levels were associated with the patient's estimated glomerular filtration rate (eGFR) at those times, particularly after controlling for other significant multivariable predictors. Experiencing biopsy-proven acute rejection (BPAR) and older donor age were the two most significant multivariable predictors of poorer eGFR at 60, 120, and 180 months post-transplant (p < 000001 and 0.000003 for older donor age at 60 and 120 months; p = 0.00008 and <0.000001 for previous BPAR at 60 and 120 months). Assignment to CSA also implied a significantly poorer eGFR (but with less magnitudes of effect) in multivariable analysis at 60 and 120 months (p = 0.01 and 0.002). Higher ranked average CNI trough levels had no association with eGFR at any timepoint in either univariable or multivariable analysis (p > 0.70). Long-term maintenance therapy with reduced-CNI dosing does not appear to cause reduced renal function.
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Affiliation(s)
- Gaetano Ciancio
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Department of SurgeryLeonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
| | - Jeffrey J. Gaynor
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Department of SurgeryLeonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
| | - Giselle Guerra
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Division of Nephrology, Department of Medicine, Leonard M. Miller School of MedicineUniversity of MiamiMiamiFloridaUSA
| | - Marina M. Tabbara
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
| | - David Roth
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Division of Nephrology, Department of Medicine, Leonard M. Miller School of MedicineUniversity of MiamiMiamiFloridaUSA
| | - Warren Kupin
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Division of Nephrology, Department of Medicine, Leonard M. Miller School of MedicineUniversity of MiamiMiamiFloridaUSA
| | - Adela Mattiazzi
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Division of Nephrology, Department of Medicine, Leonard M. Miller School of MedicineUniversity of MiamiMiamiFloridaUSA
| | - Lissett Moni
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Department of SurgeryLeonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
| | - George W. Burke
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
- Department of SurgeryLeonard M. Miller School of Medicine, University of MiamiMiamiFloridaUSA
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7
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Jadlowiec CC, Ohara SY, Punukollu R, Wagler J, Ruch B, Kumm K, Budhiraja P, Me HM, Mathur AK, Reddy KS, Khamash H, Heilman R. Outcomes with transplanting kidneys offered through expedited allocation. Clin Transplant 2023; 37:e15094. [PMID: 37563488 DOI: 10.1111/ctr.15094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/12/2023]
Abstract
INTRODUCTION Expedited out-of-sequence deceased donor kidney allocation is a strategy to avoid discards after early placement attempts have been unsuccessful. Our study aimed to assess outcomes and characteristics of these transplanted kidneys. METHODS KDPI matching was performed between expedited allocation (EA) and standard allocation (SA) deceased donor kidney transplants performed at our center. RESULTS Between 2018 and 2021, there were 225 EA offers, and 189 (84%) were transplanted. EA recipients were older (p = .007) and had shorter dialysis vintage (p < .0001). EA kidneys were likely to be nationally allocated (p < .001), have AKI (p < .0001) and longer CIT (p < .0001). There were no differences in EA and SA time-zero kidney biopsies (ci, p = .07; ct, p = .89; cv, p = .95; ah, p = .79). EA kidneys had more DGF (p = .0006), but there were no differences in DGF duration (p = .83), hospital length of stay (p = .43), 1- and 2-year eGFR (p = .16, p = .99), patient (p = .34), or death-censored graft (p = .66) survival. CONCLUSION During this study period, our center transplanted 189 kidneys through EA following local-regional declines. These kidneys often came from AKI donors and had more DGF but had similar outcomes to KDPI-matched SA kidneys. Although it has been suggested that EA has the potential to worsen transplant disparities, transplant center level decisions on organ acceptance contribute to these variations.
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Affiliation(s)
- Caroline C Jadlowiec
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Stephanie Y Ohara
- Division of Surgery, Valleywise Health Medical Center, Creighton University, Phoenix, Arizona, USA
| | - Rachana Punukollu
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Josiah Wagler
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Brianna Ruch
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Kayla Kumm
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | | | - Hay Me Me
- Division of Nephrology, Mayo Clinic, Phoenix, Arizona, USA
| | - Amit K Mathur
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Kunam S Reddy
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Hasan Khamash
- Division of Nephrology, Mayo Clinic, Phoenix, Arizona, USA
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8
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Punukollu R, Ryan M, Misra S, Budhiraja P, Ohara S, Kumm K, Guerra G, Reddy KS, Heilman R, Jadlowiec CC. Past, Current, and Future Perspectives on Transplanting Acute Kidney Injury Kidneys. Clin Pract 2023; 13:944-958. [PMID: 37623267 PMCID: PMC10453697 DOI: 10.3390/clinpract13040086] [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: 05/10/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
(1) Background: Acute kidney injury (AKI) kidneys have high non-utilization rates due to concerns regarding unfavorable outcomes. In this paper, we aimed to review the past, present, and future opinions on AKI kidneys. (2) Methods: A PubMed search was conducted for topics relevant to AKI kidney transplantation. (3) Results: Current short- and long-term data on AKI kidneys have demonstrated good outcomes including favorable graft function and survival. The role of procurement biopsies is controversial, but they have been shown to be beneficial in AKI kidneys by allowing clinicians to differentiate between reversible tubular injury and irreversible cortical necrosis. Machine perfusion has also been applied to AKI kidneys and has been shown to reduce delayed graft function (DGF). The incidence of DGF increases with AKI severity and its management can be challenging. Strategies employed to counteract this have included early initiation of dialysis after kidney transplantation, early targeting of adequate immunosuppression levels to minimize rejection risk, and establishment of outpatient dialysis. (4) Conclusions: Despite good outcomes, there continue to be barriers that impact AKI kidney utilization. Successful strategies have included use of procurement biopsies or machine perfusion and expectant management of DGF. With increasing experience, better use of AKI kidneys can result in additional opportunities to expand the donor pool.
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Affiliation(s)
- Rachana Punukollu
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Margaret Ryan
- Division of Anatomic Pathology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Suman Misra
- Division of Nephrology, Mayo Clinic, Phoenix, AZ 85054, USA
| | | | - Stephanie Ohara
- Division of Surgery, Valleywise Health Medical Center, Creighton University, Phoenix, AZ 85008, USA
| | - Kayla Kumm
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Giselle Guerra
- Division of Nephrology, Miami Transplant Institute, Miami, FL 33136, USA
| | - Kunam S. Reddy
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
| | | | - Caroline C. Jadlowiec
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, AZ 85054, USA
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9
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Ghoneima AS, Sousa Da Silva RX, Gosteli MA, Barlow AD, Kron P. Outcomes of Kidney Perfusion Techniques in Transplantation from Deceased Donors: A Systematic Review and Meta-Analysis. J Clin Med 2023; 12:3871. [PMID: 37373568 DOI: 10.3390/jcm12123871] [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: 03/14/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 06/29/2023] Open
Abstract
The high demand for organs in kidney transplantation and the expansion of the donor pool have led to the widespread implementation of machine perfusion technologies. In this study, we aim to provide an up-to-date systematic review of the developments in this expanding field over the past 10 years, with the aim of answering the question: "which perfusion technique is the most promising technique in kidney transplantation?" A systematic review of the literature related to machine perfusion in kidney transplantation was performed. The primary outcome measure was delayed graft function (DGF), and secondary outcomes included rates of rejection, graft survival, and patient survival rates after 1 year. Based on the available data, a meta-analysis was performed. The results were compared with data from static cold storage, which is still the standard of care in many centers worldwide. A total of 56 studies conducted in humans were included, and 43 studies reported outcomes of hypothermic machine perfusion (HMP), with a DGF rate of 26.4%. A meta-analysis of 16 studies showed significantly lower DGF rates in the HMP group compared to those of static cold storage (SCS). Five studies reported outcomes of hypothermic machine perfusion + O2, with an overall DGF rate of 29.7%. Two studies explored normothermic machine perfusion (NMP). These were pilot studies, designed to assess the feasibility of this perfusion approach in the clinical setting. Six studies reported outcomes of normothermic regional perfusion (NRP). The overall incidence of DGF was 71.5%, as it was primarily used in uncontrolled DCD (Maastricht category I-II). Three studies comparing NRP to in situ cold perfusion showed a significantly lower rate of DGF with NRP. The systematic review and meta-analysis provide evidence that dynamic preservation strategies can improve outcomes following kidney transplantation. More recent approaches such as normothermic machine perfusion and hypothermic machine perfusion + O2 do show promising results but need further results from the clinical setting. This study shows that the implementation of perfusion strategies could play an important role in safely expanding the donor pool.
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Affiliation(s)
- Ahmed S Ghoneima
- Department of HPB and Transplant Surgery, St. James's University Hospital, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Richard X Sousa Da Silva
- Swiss HPB and Transplantation Center, Department of Surgery and Transplantation, University Hospital Zurich, 8091 Zurich, Switzerland
| | | | - Adam D Barlow
- Department of HPB and Transplant Surgery, St. James's University Hospital, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Philipp Kron
- Department of HPB and Transplant Surgery, St. James's University Hospital, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
- Swiss HPB and Transplantation Center, Department of Surgery and Transplantation, University Hospital Zurich, 8091 Zurich, Switzerland
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10
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Riella J, Ferreira R, Tabbara MM, Abreu P, Ernani L, Defreitas M, Chandar J, Gaynor JJ, González J, Ciancio G. Retroperitoneal kidney transplantation with liver and native kidney mobilization: a safe technique for pediatric recipients. World J Pediatr 2023; 19:489-501. [PMID: 36474085 PMCID: PMC10149446 DOI: 10.1007/s12519-022-00658-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/16/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Pediatric kidney transplant (KT) using larger, deceased or living donor adult kidneys can be challenging in the pediatric population due to limited space in the retroperitoneum. Liver and native kidney (L/NK) mobilization techniques can be used in smaller and younger transplant recipients to aid in retroperitoneal placement of the renal allograft. Here, we compare the clinical outcomes of pediatric retroperitoneal KT with and without L/NK mobilization. METHODS We retrospectively analyzed pediatric renal transplant recipients treated between January 2015 and May 2021. Donor and recipient demographics, intraoperative data, and recipient outcomes were included. Recipients were divided into two groups according to the surgical technique utilized: with L/NK mobilization (Group 1) and without L/NK mobilization (Group 2). Baseline variables were described using frequency distributions for categorical variables and means and standard errors for continuous variables. Tests of association with the likelihood of using L/NK mobilization were performed using standard χ2 tests, t tests, and the log-rank test. RESULTS Forty-six pediatric recipients were evaluated and categorized into Group 1 (n = 26) and Group 2 (n = 20). Recipients in Group 1 were younger (6.7 ± 0.8 years vs. 15. 3 ± 0.7, P < 0.001), shorter (109.5 ± 3.7 vs. 154.2 ± 3.8 cm, P < 0.001) and weighed less (21.4 ± 2.0 vs. 48.6 ± 3.4 kg, P < 0.001) than those in Group 2. Other baseline characteristics did not differ between Groups 1 and 2. One urologic complication was encountered in Group 2; no vascular or surgical complications were observed in either group. Additionally, no stents or drains were used in any of the patients. There were no cases of delayed graft function or graft primary nonfunction. The median follow-up of the study was 24.6 months post-transplant. Two patients developed death-censored graft failure (both in Group 2, P = 0.22), and there was one death with a functioning graft (in Group 2, P = 0.21). CONCLUSIONS Retroperitoneal liver/kidney mobilization is a feasible and safe technique that facilitates implantation of adult kidney allografts into pediatric transplant recipients with no increased risk of developing post-operative complications, graft loss, or mortality.
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Affiliation(s)
- Juliano Riella
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Raphealla Ferreira
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Marina M Tabbara
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
| | - Phillipe Abreu
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Lucas Ernani
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Marissa Defreitas
- Department of Pediatrics, Division of Nephrology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Jayanthi Chandar
- Department of Pediatrics, Division of Nephrology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Jeffrey J Gaynor
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA
| | - Javier González
- Servicio de Urología, Unidad de Trasplante Renal, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Gaetano Ciancio
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA.
- Department of Urology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, USA.
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, 1801 NW 9Th Ave, 7Th Floor, Miami, FL, 33136, USA.
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11
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Riella J, Tabbara MM, Alvarez A, DeFreitas MJ, Chandar J, Gaynor JJ, González J, Ciancio G. Pediatric kidney transplants with multiple renal arteries show no increased risk of complications compared to single renal artery grafts. Front Pediatr 2022; 10:1058823. [PMID: 36589161 PMCID: PMC9800822 DOI: 10.3389/fped.2022.1058823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/18/2022] [Indexed: 12/23/2022] Open
Abstract
Background Kidney allografts with multiple renal arteries (MRA) are not infrequent and have been historically associated with a higher risk of developing vascular and urologic complications. Reports of kidney transplantation using MRA allografts in the pediatric population remain scarce. The aim of this study was to evaluate if transplantation of allografts with MRA with a surgical intent of creating a single arterial inflow using vascular reconstruction techniques when required, and without the routine use of surgical drains or ureteral stents, is associated with an increased risk of complications when compared to single renal artery (SRA) grafts. Methods We retrospectively analyzed all pediatric renal transplant recipients performed by a single surgeon at our center between January 2015 and June 2022. Donor and recipient demographics, intraoperative data, and recipient outcomes were included. Recipients were divided into two groups based on SRA vs. MRA. Baseline variables were described using frequency distributions for categorical variables and means and standard errors for continuous variables. Comparisons of those distributions between the two groups were performed using standard chi-squared and t-tests. Time-to-event distributions were compared using the log-rank test. Results Forty-nine pediatric transplant recipients were analyzed. Of these, 9 had donors with MRA (Group 1) and 40 had donors with SRA (Group 2). Native kidney and liver mobilization was performed in 44.4% (4/9) of Group 1 vs. 60.0% (24/40) of Group 2 cases (p = 0.39). There were no cases of delayed graft function or graft primary nonfunction. No surgical drainage or ureteral stents were used in any of the cases. One patient in Group 2 developed a distal ureter stricture. The geometric mean serum creatinine at 6- and 12-months posttransplant was 0.7 */ 1.2 and 0.9 */ 1.2 mg/dl in Group 1 and 0.7 */ 1.1 and 0.7 */ 1.1 mg/dl in Group 2. Two death-censored graft failures were observed in Group 2, with no significant difference observed between the two groups (p = 0.48). Conclusions Our study demonstrates that pediatric renal transplantation with MRA grafts, using a surgical approach to achieve a single renal artery ostium, can be safely performed while achieving similar outcomes as SRA grafts and with a low complication rate.
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Affiliation(s)
- Juliano Riella
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Marina M. Tabbara
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Angel Alvarez
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Marissa J. DeFreitas
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Department of Pediatrics, Division of Nephrology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Jayanthi Chandar
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Department of Pediatrics, Division of Nephrology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Jeffrey J. Gaynor
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Javier González
- Servicio de Urología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Gaetano Ciancio
- Department of Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Miami Transplant Institute, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
- Department of Urology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
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12
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Predictors of Kidney Delayed Graft Function and Its Prognostic Impact following Combined Liver-Kidney Transplantation: A Recent Single-Center Experience. J Clin Med 2022; 11:jcm11102724. [PMID: 35628851 PMCID: PMC9146237 DOI: 10.3390/jcm11102724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 12/04/2022] Open
Abstract
Combined liver−kidney transplantation (CLKT) improves patient survival among liver transplant recipients with renal dysfunction. However, kidney delayed graft function (kDGF) still represents a common and challenging complication that can negatively impact clinical outcomes. This retrospective study analyzed the incidence, potential risk factors, and prognostic impact of kDGF development following CLKT in a recently transplanted cohort. Specifically, 115 consecutive CLKT recipients who were transplanted at our center between January 2015 and February 2021 were studied. All transplanted kidneys received hypothermic pulsatile machine perfusion (HPMP) prior to transplant. The primary outcome was kDGF development. Secondary outcomes included the combined incidence and severity of developing postoperative complications; development of postoperative infections; biopsy-proven acute rejection (BPAR); renal function at 1, 3, 6, and 12 months post-transplant; and death-censored graft and patient survival. kDGF was observed in 37.4% (43/115) of patients. Multivariable analysis of kDGF revealed the following independent predictors: preoperative dialysis (p = 0.0003), lower recipient BMI (p = 0.006), older donor age (p = 0.003), utilization of DCD donors (p = 0.007), and longer delay of kidney transplantation after liver transplantation (p = 0.0003). With a median follow-up of 36.7 months post-transplant, kDGF was associated with a significantly increased risk of developing more severe postoperative complication(s) (p < 0.000001), poorer renal function (particularly at 1 month post-transplant, p < 0.000001), and worse death-censored graft (p = 0.00004) and patient survival (p = 0.0002). kDGF may be responsible for remarkable negative effects on immediate and potentially longer-term clinical outcomes after CLKT. Understanding the important risk factors for kDGF development in CLKT may better guide recipient and donor selection(s) and improve clinical decisions in this increasing group of transplant recipients.
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13
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Renal Transplantation from a Deceased Donor with Polycystic Kidney Disease. Case Rep Transplant 2021; 2021:6711155. [PMID: 34447598 PMCID: PMC8383719 DOI: 10.1155/2021/6711155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/24/2021] [Accepted: 08/03/2021] [Indexed: 11/18/2022] Open
Abstract
Renal transplantation is the gold standard treatment for patients with end-stage renal disease (ESRD) as it demonstrates improved long-term survival compared to patients who remain on renal replacement therapy. The widening gap between the demand and supply of organs warrants the expansion of donor criteria for renal transplantation. Kidneys with multiple cysts are often rejected for transplantation. Here, we present our recent experience of a 72-year-old patient with ESRD due to a biopsy-proven diabetic nephropathy who received a deceased donor kidney with adult polycystic kidney disease (APKD). At 31-month posttransplant, he had a serum creatinine of 1.6 mg/dL. Deceased donors affected by APKD should be considered an acceptable option for successful renal transplantation in select recipients, as well as an alternative kidney source to increase the donor pool.
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14
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Mendez NV, Raveh Y, Livingstone JJ, Ciancio G, Guerra G, Burke III GW, Shatz VB, Souki FG, Chen LJ, Morsi M, Figueiro JM, Ibrahim TM, DeFaria WL, Nicolau-Raducu R. Perioperative risk factors associated with delayed graft function following deceased donor kidney transplantation: A retrospective, single center study. World J Transplant 2021; 11:114-128. [PMID: 33954089 PMCID: PMC8058644 DOI: 10.5500/wjt.v11.i4.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/05/2021] [Accepted: 03/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND There is an abundant need to increase the availability of deceased donor kidney transplantation (DDKT) to address the high incidence of kidney failure. Challenges exist in the utilization of higher risk donor organs into what appears to be increasingly complex recipients; thus the identification of modifiable risk factors associated with poor outcomes is paramount.
AIM To identify risk factors associated with delayed graft function (DGF).
METHODS Consecutive adults undergoing DDKT between January 2016 and July 2017 were identified with a study population of 294 patients. The primary outcome was the occurrence of DGF.
RESULTS The incidence of DGF was 27%. Under logistic regression, eight independent risk factors for DGF were identified including recipient body mass index ≥ 30 kg/m2, baseline mean arterial pressure < 110 mmHg, intraoperative phenylephrine administration, cold storage time ≥ 16 h, donation after cardiac death, donor history of coronary artery disease, donor terminal creatinine ≥ 1.9 mg/dL, and a hypothermic machine perfusion (HMP) pump resistance ≥ 0.23 mmHg/mL/min.
CONCLUSION We delineate the association between DGF and recipient characteristics of pre-induction mean arterial pressure below 110 mmHg, metabolic syndrome, donor-specific risk factors, HMP pump parameters, and intraoperative use of phenylephrine.
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Affiliation(s)
- Nicholas V Mendez
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Yehuda Raveh
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Joshua J Livingstone
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Gaetano Ciancio
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Giselle Guerra
- Division of Nephrology of the Department of Medicine, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - George W Burke III
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Vadim B Shatz
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Fouad G Souki
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Linda J Chen
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Mahmoud Morsi
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Jose M Figueiro
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Tony M Ibrahim
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Werviston L DeFaria
- Department of Surgery, Miami Transplant Institute/University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
| | - Ramona Nicolau-Raducu
- Department of Anesthesiology, University of Miami/Jackson Memorial Hospital, Miami, FL 33136, United States
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15
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Van Praet C, Lambert E, Desender L, Van Parys B, Vanpeteghem C, Decaestecker K. Total Intracorporeal Robot Kidney Autotransplantation: Case Report and Description of Surgical Technique. Front Surg 2020; 7:65. [PMID: 33425979 PMCID: PMC7786393 DOI: 10.3389/fsurg.2020.00065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022] Open
Abstract
Introduction and Objectives: Kidney autotransplantation can be performed in patients with complex renal or ureteral pathology not suitable for in situ reconstruction, such as renal vasculature anomalies, patients with proximal or long complex ureteral strictures, or complex oncological cases. Robot-assisted surgery allows for a high-quality vascular and ureteral anastomosis and faster patient recovery. Robot-assisted kidney autotransplantation (RAKAT) is performed in two phases: nephrectomy and pelvic transplantation. In-between, extraction of the kidney allows for vascular reconstruction or kidney modification on the bench and safe cold ischemia can be established. If no bench reconstruction is needed, total intracorporeal RAKAT (tiRAKAT) is feasible. One case report in Europe has been described; however, to our knowledge no surgical video is available. Methods: A 58 year-old woman suffered from right mid- and distal ureteral stenosis following pelvic radiotherapy 10 years prior for cervical cancer. A JJ stent was placed, but she suffered from recurrent urinary tract infections, and ultimately a nephrostomy was placed. Renogram demonstrated 43% relative right kidney function. As her bladder volume was low following radiotherapy, no Boari flap was possible and the patient refused life-long nephrostomy or nephrectomy. Therefore, tiRAKAT was performed using the DaVinci Xi system. Results: We describe our surgical technique including a video. Surgical time (skin-to-skin) was 5 h and 45 min. Warm ischemia time was 4 min, cold ischemia 55 min, and rewarming ischemia 15 min. The abdominal catheter and bladder catheter were removed on the first and second postoperative day, respectively. The JJ stent was removed after 4 weeks. The patient suffered from pulmonary embolism on the second postoperative day, for which therapeutic low molecular weight heparin was started. No further complications occurred during the first 90 postoperative days. After 7 months, overall kidney function remained stable, right kidney function dropped non-significantly from 27 to 25.2 mL/min (−6.7%) on renal scintigraphy. Conclusion: We demonstrated feasibility and, for the first time, a surgical video of tiRAKAT highlighting patient positioning, trocar placement, and intracorporeal cold ischemia technique.
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Affiliation(s)
| | - Edward Lambert
- Department of Urology, Ghent University Hospital, Ghent, Belgium
| | - Liesbeth Desender
- Department of Thoracic and Vascular Surgery, Ghent University Hospital, Ghent, Belgium
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16
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Kawakita S, Beaumont JL, Jucaud V, Everly MJ. Personalized prediction of delayed graft function for recipients of deceased donor kidney transplants with machine learning. Sci Rep 2020; 10:18409. [PMID: 33110142 PMCID: PMC7591492 DOI: 10.1038/s41598-020-75473-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 10/15/2020] [Indexed: 02/06/2023] Open
Abstract
Machine learning (ML) has shown its potential to improve patient care over the last decade. In organ transplantation, delayed graft function (DGF) remains a major concern in deceased donor kidney transplantation (DDKT). To this end, we harnessed ML to build personalized prognostic models to predict DGF. Registry data were obtained on adult DDKT recipients for model development (n = 55,044) and validation (n = 6176). Incidence rates of DGF were 25.1% and 26.3% for the development and validation sets, respectively. Twenty-six predictors were identified via recursive feature elimination with random forest. Five widely-used ML algorithms-logistic regression (LR), elastic net, random forest, artificial neural network (ANN), and extreme gradient boosting (XGB) were trained and compared with a baseline LR model fitted with previously identified risk factors. The new ML models, particularly ANN with the area under the receiver operating characteristic curve (ROC-AUC) of 0.732 and XGB with ROC-AUC of 0.735, exhibited superior performance to the baseline model (ROC-AUC = 0.705). This study demonstrates the use of ML as a viable strategy to enable personalized risk quantification for medical applications. If successfully implemented, our models may aid in both risk quantification for DGF prevention clinical trials and personalized clinical decision making.
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Affiliation(s)
| | | | - Vadim Jucaud
- Terasaki Research Institute, Los Angeles, CA, USA
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17
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Ciancio G, Gaynor JJ, Guerra G, Roth D, Chen L, Kupin W, Mattiazzi A, Ortigosa-Goggins M, Moni L, Burke GW. Randomized trial of 3 maintenance regimens (TAC/SRL vs. TAC/MMF vs. CSA/SRL) with low-dose corticosteroids in primary kidney transplantation: 18-year results. Clin Transplant 2020; 34:e14123. [PMID: 33070366 DOI: 10.1111/ctr.14123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/05/2020] [Accepted: 10/10/2020] [Indexed: 12/21/2022]
Abstract
A randomized trial of 150 primary kidney transplant recipients, initiated in May 2000, compared tacrolimus (TAC)/sirolimus (SRL) vs. TAC/mycophenolate mofetil (MMF) vs. cyclosporine microemulsion (CSA)/SRL (N = 50/group). All patients received daclizumab induction and maintenance corticosteroids. With current median follow-up of 18 years post-transplant, biopsy-proven acute rejection (BPAR) occurred less often in TAC/MMF (26% (13/50)), vs. the TAC/SRL (36% (18/50)) and CSA/SRL (34% (17/50)) arms combined (p = .23), with statistical significance favoring TAC/MMF (p = .05) after controlling for the multivariable (Cox model) effects of recipient age, recipient race/ethnicity, and donor age. First BPAR rate was clearly more favorable for TAC/MMF after stratifying patients by having 0-1 (N = 72) vs. 2-3 (N = 78) unfavorable baseline characteristics (recipient age <50 years, African American or Hispanic recipient, and donor age ≥50 years) (p = .02). Mean estimated glomerular filtration rate (eGFR), using the CKD-EPI formula, was consistently higher for TAC/MMF, particularly after controlling for the multivariable effect of donor age, throughout the first 96 months post-transplant (p ≤ .008). These differences were translated into an observed more favorable graft failure due to immunologic cause (CAI/TG) rate for TAC/MMF (p = .06), although no significant differences in overall death-uncensored graft loss were observed. Previously reported significantly higher study drug discontinuation and requirement for antilipid therapy rates in the SRL-assigned arms were maintained over time. Overall, these results at 18 years post-transplant more definitively show that TAC/MMF should be the gold standard for achieving optimal, long-term maintenance immunosuppression in kidney transplantation.
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Affiliation(s)
- Gaetano Ciancio
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, The DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Jeffrey J Gaynor
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, The DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Giselle Guerra
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - David Roth
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Linda Chen
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, The DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Warren Kupin
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Adela Mattiazzi
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Mariella Ortigosa-Goggins
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Lissett Moni
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, The DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - George W Burke
- Miami Transplant Institute, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, The DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
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18
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Wszola M, Domagala P, Serwanska-Swietek M, Ostaszewska A, Perkowska-Ptasinska A, Piatek T, Gozdowska J, Durlik M, Chmura A, Kwiatkowski A. Should Immunosuppression After Kidney Transplant Be Adjusted Based on Renal Resistance During Pretransplant Hypothermic Machine Perfusion? Transplant Proc 2019; 51:2676-2682. [PMID: 31477422 DOI: 10.1016/j.transproceed.2019.01.202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/04/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND The hypothermic machine perfusion reduces delayed graft function after kidney transplant and allows, to some extent, predicting early graft function. However, it is difficult to identify exact perfusion criteria with which to exclude kidneys from transplant or modify post-transplant care. The aim of this study was to analyze whether renal resistance during the fourth hour of hypothermic machine perfusion is useful in the prediction of graft survival and acute rejection. PATIENTS AND METHODS Data on pretransplant hypothermic machine perfusion parameters of 407 transplanted kidneys were available. Receiver operating characteristic curve analysis was performed to find an optimal cutoff value of ratio for predicting a higher risk class of considered group of patients. According to this, patients were divided into 2 groups: those who received kidneys with renal resistance lower than 0.19 mm Hg/mL/min (R1; n = 187) and those who received kidneys with renal resistance equal to or higher than 0.19 mm Hg/mL/min (R2; n = 220). Within R2, we additionally analyzed 2 subgroups: patients who received induction therapy (R2-Ind+; n = 124) and those who did not received induction therapy (R2-Ind-; n = 96). RESULTS Acute rejection in R1 within 1 month post transplant was 2-fold lower compared with R2 and was 6.4% vs 13.1% (P = .03), respectively. One-year graft survival was higher in R1 compared with R2 and was 94.6% vs 88.5% (P = .03), respectively. Acute rejection in the R2-Ind+ subgroup within 1 month post transplant was 2.46-fold lower compared with the R2-Ind- subgroup and was 8% vs 19.7% (P = .01), respectively. CONCLUSION Immunosuppression treatment after transplant should be adjusted to perfusion parameters.
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Affiliation(s)
- Michal Wszola
- Foundation of Research and Science Development, Otwock, Poland
| | - Piotr Domagala
- Department of General and Transplantation Surgery, Medical University of Warsaw, Poland.
| | | | - Agata Ostaszewska
- Foundation of Research and Science Development, Otwock, Poland; Department of General and Transplantation Surgery, Medical University of Warsaw, Poland
| | | | - Tomasz Piatek
- Department of Surgical & Transplant Nursing, Medical University of Warsaw, Poland
| | - Jolanta Gozdowska
- Department of Transplant Medicine and Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Magdalena Durlik
- Department of Transplant Medicine and Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Andrzej Chmura
- Department of General and Transplantation Surgery, Medical University of Warsaw, Poland
| | - Artur Kwiatkowski
- Foundation of Research and Science Development, Otwock, Poland; Department of General and Transplantation Surgery, Medical University of Warsaw, Poland
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19
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Combined Ex Vivo Hypothermic and Normothermic Perfusion for Assessment of High-risk Deceased Donor Human Kidneys for Transplantation. Transplantation 2019; 103:392-400. [PMID: 29952816 PMCID: PMC6365241 DOI: 10.1097/tp.0000000000002299] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background Despite careful clinical examination, procurement biopsy and assessment on hypothermic machine perfusion, a significant number of potentially useable deceased donor kidneys will be discarded because they are deemed unsuitable for transplantation. Ex vivo normothermic perfusion (EVNP) may be useful as a means to further assess high-risk kidneys to determine suitability for transplantation. Methods From June 2014 to October 2015, 7 kidneys (mean donor age, 54.3 years and Kidney Donor Profile Index, 79%) that were initially procured with the intention to transplant were discarded based on a combination of clinical findings, suboptimal biopsies, long cold ischemia time (CIT) and/or poor hypothermic perfusion parameters. They were subsequently placed on EVNP using oxygenated packed red blood cells and supplemental nutrition for a period of 3 hours. Continuous hemodynamic and functional parameters were assessed. Results After a mean CIT of 43.7 hours, all 7 kidneys appeared viable on EVNP with progressively increasing renal blood flow over the 3-hour period of perfusion. Five of the 7 kidneys had excellent macroscopic appearance, rapid increase in blood flow to 200 to 250 mL/min, urine output of 40 to 260 mL/h and increasing creatinine clearance. Conclusions Favorable perfusion characteristics and immediate function after a 3-hour course of EVNP suggests that high-risk kidneys subjected to long CIT may have been considered for transplantation. The combined use of ex vivo hypothermic and normothermic perfusion may be a useful strategy to more adequately assess and preserve high-risk kidneys deemed unsuitable for transplantation. A clinical trial will be necessary to validate the usefulness of this approach. The combined use of ex vivo hypothermic and normothermic perfusion may be a useful strategy to more adequately assess and preserve high-risk kidneys deemed unsuitable for transplantation.
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20
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Basu A, Rosen LM, Tan HP, Fishbein J, Wu CM, Donaldson JB, Stuart S, Shah NA, McCauley J, Humar A, Shapiro R. Outcomes of Deceased Donor Kidney Transplantation Using Expanded Criteria Donor Kidneys Following Pulsatile Preservation. Cureus 2019; 11:e5091. [PMID: 31523526 PMCID: PMC6728786 DOI: 10.7759/cureus.5091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Aim We compared the outcomes of transplanting expanded criteria donor (ECD) kidneys undergoing machine perfusion (MP) versus cold storage (CS). Material and methods Data on all expanded criteria deceased donor kidney transplants performed at the University of Pittsburgh Medical Center from January 2003 through December 2012 were collected from an in-house electronic repository. There were 78 patients in the MP group and 101 patients in the CS group. The majority of the ECD kidneys were imported from other organ procurement organizations: 69 of 73 in the MP group (94.5%, 5 from unknown sources); and 90 of 99 in the CS group (91%), 2 from an unknown source). Most of the patients in the MP group (77 of 78) received a combination of MP and static CS. MP was performed just prior to transplantation in all MP patients. We used descriptive statistics to characterize our sample. We used logistic regression analysis to model the binary outcome of delayed graft function (DGF; i.e., “yes/no”) and Cox (proportional hazard) regression to model time until graft failure. The Kaplan-Meier product-limit method was used to estimate survival curves for graft and patient survival. Results A total of 179 transplants were done from ECD donors (MP, 78; CS, 101). The mean static cold storage time was 14 ± 4.1 hours and the mean machine perfusion time was 11.2 ± 6.3 hours in the MP group. The donor creatinine was higher (1.3 ± 0.6 mg/dl vs. 1.2 ± 0.4 mg/dl, p = 0.01) and the cold ischemia time was longer (28.9 ± 10 hours vs. 24 ± 7.9 hours, p = 0.0003) in the MP patients. There were no differences between the two groups in DGF rate (20.8% [MP] vs. 25.8% [CS], p = 0.46), six-year patient survival (74% [MP] vs. 63.2% [CS], p = 0.11), graft survival (64.3% [MP] vs. 51.5% [CS], p = 0.22), and serum creatinine levels (1.5 mg/dl vs. 1.5 mg/dl) on univariate analysis. On unadjusted analysis, MP subjects without DGF had longer graft survival compared to CS subjects with DGF (p < 0.0032) and MP subjects with DGF (p < 0.0005). MP subjects without DGF had longer death-censored graft survival compared to CS subjects with DGF (p < 0.0077) and MP subjects with DGF (p < 0.0016). However, on regression analysis, MP subjects had longer graft survival than CS subjects when DGF was not present. MP subjects without DGF had longer patient survival compared to CS subjects with DGF (p < 0.0289), on unadjusted analysis. MP subjects had a reduced risk of graft failure (hazard ratio [HR], 0.34; 95% confidence interval [CI], 0.17, 0.68) and death-censored graft failure (HR, 0.44; 95% CI, 0.19, 1.00), compared to CS subjects when DGF was not present. Conclusions Reduction of DGF rates for imported ECD kidneys is vital to optimize outcomes and increase their utilization. One strategy to decrease DGF rates may be to reduce static CS time during transportation, by utilizing a portable kidney perfusion machine.
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Affiliation(s)
- Amit Basu
- Surgery, Jamaica Hospital Medical Center, New York, USA
| | | | - Henkie P Tan
- Surgery, Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Joanna Fishbein
- Biostatistics, Feinstein Institute of Medical Research, Manhasset, USA
| | - Christine M Wu
- Nephrology, Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Joseph B Donaldson
- Bio-Informatics, Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Susan Stuart
- Miscellaneous, Organ Procurement Organization, Center for Organ Recovery and Education, Pittsburgh, USA
| | - Nirav A Shah
- Nephrology, Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Jerry McCauley
- Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, USA
| | - Abhinav Humar
- Surgery, Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Ron Shapiro
- Surgery, Recanati-Miller Transplantation Institute, the Mount Sinai Hospital, New York, USA
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21
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Zhong Z, Lan J, Ye S, Liu Z, Fan L, Zhang Y, Fu Z, Qiao B, Shiu-Chung Ko D, Wang Y, Ye Q. Outcome Improvement for Hypothermic Machine Perfusion Versus Cold Storage for Kidneys From Cardiac Death Donors. Artif Organs 2018; 41:647-653. [PMID: 28703374 DOI: 10.1111/aor.12828] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 07/09/2016] [Accepted: 07/18/2016] [Indexed: 11/30/2022]
Abstract
Organ shortage has led to an increased use of kidneys from cardiac death donors (DCDs), but controversies about the methods of organ preservation still exist. This study aims to compare the effect of machine perfusion (MP) and cold storage (CS) in protecting kidneys harvested from DCDs. 141 kidney pairs from DCDs between July 2010 and July 2015 were included in this randomized controlled study. One kidney from each donor was randomly assigned to MP and the contralateral kidney was assigned to CS. Delayed graft function (DGF) rate, resistance index of renal arteries, early renal function, and survival rates were used to estimate the effect of preservation. The results showed that MP decreased the rate of DGF from 33.3 to 22.0% (P = 0.033). Ultrasound of the kidneys within 48 h after transplantation showed that the resistance index of renal main artery (0.673 ± 0.063 vs. 0.793 ± 0.124, P < 0.001), sub segmental artery (0.66 ± 0.062 vs. 0.764 ± 0.077, P < 0.001) and interlobular artery (0.648 ± 0.056 vs. 0.745 ± 0.111, P = 0.023) were all significantly lower in the MP group than those in the CS group. Furthermore, compared to the CS group, in the first 7 days following transplantation, the median urine volume was significantly higher (4080 mL vs. 3000 mL, P = 0.047) in kidneys sustained using MP and the median serum creatinine was remarkably lower (180 µmol/L vs. 390 µmol/L, P = 0.024). More importantly, MP group had higher 1- and 3-year graft survival rates (98% vs. 93%, P = 0.026; 93% vs. 82%, P = 0.036, respectively). Hypothermic MP improved the outcomes of DCD kidney transplantation.
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Affiliation(s)
- Zibiao Zhong
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Jia'nan Lan
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Shaojun Ye
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Zhongzhong Liu
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Lin Fan
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Yang Zhang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei.,Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
| | - Zhen Fu
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei.,Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
| | - Bingbing Qiao
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Dicken Shiu-Chung Ko
- Department of Urology, Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA
| | - Yanfeng Wang
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei
| | - Qifa Ye
- Wuhan University, Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei.,Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, The 3rd Xiangya Hospital of Central South University, Changsha, China
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22
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Matos ACC, Requiao Moura LR, Borrelli M, Nogueira M, Clarizia G, Ongaro P, Durão MS, Pacheco-Silva A. Impact of machine perfusion after long static cold storage on delayed graft function incidence and duration and time to hospital discharge. Clin Transplant 2017; 32. [PMID: 28972665 DOI: 10.1111/ctr.13130] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2017] [Indexed: 11/30/2022]
Abstract
Delayed graft function (DGF) is very high in our center (70%-80%), and we usually receive a kidney for transplant after more than 22 hours of static cold ischemia time (CIT). Also, there is an inadequate care of the donors, contributing to a high rate of DGF. We decided to test whether machine perfusion (MP) after a CIT improved the outcome of our transplant patients. We analyzed the incidence of DGF, its duration, and the length of hospital stay (LOS) in patients who received a kidney preserved with MP after a CIT (hybrid perfusion-HP). We included 54 deceased donors kidneys preserved with HP transplanted from Feb/13 to Jul/14, and compared them to 101 kidney transplants preserved by static cold storage (CS) from Nov/08 to May/12. The median pumping time was 11 hours. DGF incidence was 61.1% vs 79.2% (P = .02), median DGF duration was 5 vs 11 days (P < .001), and median LOS was 13 vs 18 days (P < .011), for the HP compared to CS group. The observed reduction of DGF with machine perfusion did not occur in donors over 50 years old. In the multivariate analysis, risk factors for DGF, adjusted for CIT, were donor age (OR, 1.04; P = .005) and the absence of use of MP (OR, 1.54; P = .051). In conclusion, the use of HP contributed to faster recovery of renal function and to a shorter length of hospital stay.
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Affiliation(s)
- Ana Cristina C Matos
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | - Milton Borrelli
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Mario Nogueira
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Gabriela Clarizia
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Paula Ongaro
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Marcelino Souza Durão
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil.,Department of Medicine/Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Alvaro Pacheco-Silva
- Renal Transplantation Division, Hospital Israelita Albert Einstein, São Paulo, Brazil.,Department of Medicine/Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil
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23
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Moser MAJ, Ginther N, Luo Y, Beck G, Ginther R, Ewen M, Matsche-Neufeld R, Shoker A, Sawicki G. Early experience with hypothermic machine perfusion of living donor kidneys - a retrospective study. Transpl Int 2017; 30:706-712. [PMID: 28390094 DOI: 10.1111/tri.12964] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/31/2016] [Accepted: 03/24/2017] [Indexed: 02/06/2023]
Abstract
Although hypothermic machine perfusion (HMP) has been shown to be beneficial to deceased donor kidneys, the effect of HMP on living donor kidneys (LDK) is unknown. LDK are subjected to minutes of normothermic ischemia at the time of recovery. Comparison of 16 LDK preserved by HMP with 16 LDK preserved by static cold storage (SCS). Outcomes of interest are resistive indices (RI), both while on HMP and postoperatively, and creatinine clearance (CrCl). Injury markers NGAL and LDH were seen in the perfusate of LDK in amounts similar to what is found for donation after neurological determination of death kidneys. Compared to SCS kidneys, CrCl was significantly higher in the HMP group from days 2 through 7 post-transplant [ie: day 7 (78.8 ± 5.4 vs. 54.0 ± 4.6 ml/min, P = 0.005)]. CrCl at 1 year was higher in the HMP group (81.2 ± 5.8 vs. 70.0 ± 5.3 ml/min, P = 0.03). Early post-transplant RI was significantly lower in the HMP group (0.61 ± 0.02 vs. 0.71 ± 0.02, P < 0.0001). Our data support the assertion that injury does occur during LDK procurement and suggest that some of this injury may be reversed with HMP, resulting in more favorable early RI and graft function compared to SCS kidneys.
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Affiliation(s)
- Michael A J Moser
- Department of Surgery, University of Saskatchewan, Saskatoon, SK, Canada.,Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada
| | - Nathan Ginther
- Department of Surgery, University of Saskatchewan, Saskatoon, SK, Canada
| | - Yigang Luo
- Department of Surgery, University of Saskatchewan, Saskatoon, SK, Canada.,Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada
| | - Gavin Beck
- Department of Surgery, University of Saskatchewan, Saskatoon, SK, Canada.,Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada
| | - Ronn Ginther
- Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada
| | - Marla Ewen
- Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada
| | | | - Ahmed Shoker
- Saskatchewan Renal Transplant Program, Saskatoon, SK, Canada.,Department of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Grzegorz Sawicki
- Department of Pharmacology, University of Saskatchewan, Saskatoon, SK, Canada.,Department of Clinical Chemistry, Medical University of Wroclaw, Wroclaw, Poland
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24
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Ciancio G, Gaynor JJ, Guerra G, Sageshima J, Roth D, Chen L, Kupin W, Mattiazzi A, Tueros L, Flores S, Hanson L, Ruiz P, Vianna R, Burke GW. Randomized trial of rATg/Daclizumab vs. rATg/Alemtuzumab as dual induction therapy in renal transplantation: Results at 8years of follow-up. Transpl Immunol 2016; 40:42-50. [PMID: 27888093 DOI: 10.1016/j.trim.2016.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 01/28/2023]
Abstract
Our goal in using dual induction therapy is to bring the kidney transplant recipient closer (through more effectively timed lymphodepletion) to an optimally immunosuppressed state. Here, we report long-term results of a prospective randomized trial comparing (Group I,N=100) rATG/Dac (3 rATG, 2 Dac doses) vs. (Group II,N=100) rATG/Alemtuzumab(C1H) (1 dose each), using reduced tacrolimus dosing, EC-MPS, and early corticosteroid withdrawal. Lower EC-MPS dosing was targeted in Group II to avoid severe leukopenia. Median follow-up was 96mo post-transplant. There were no differences in 1st BPAR (including borderline) rates: 10/100 vs. 9/100 in Groups I and II during the first 12mo(P=0.54), and 20/100 vs. 20/100 throughout the study(P=0.90). Equally favorable renal function was maintained in both treatment arms(N.S.). While not significant, more patients in Group II experienced graft loss, 25/100 vs. 18/100 in Group I(P=0.23). Actuarial patient/graft survival at 96mo was 92%/83% vs. 85%/73% in Groups I and II(N.S.). DWFG-due-to-infection(N.S.), EC-MPS withholding-due-to-leukopenia during the first 2mo(P=0.03), and incidence of viral infections(P=0.09) were higher in Group II, whereas EC-MPS withholding-due-to-GI symptoms was higher in Group I(P=0.009). No other adverse event differences were observed. While long-term anti-rejection and renal function efficacy were demonstrated in both treatment arms, slight over-immunosuppression of Group II patients occurred.
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Affiliation(s)
- Gaetano Ciancio
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Jeffrey J Gaynor
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Giselle Guerra
- Division of Nephrology of the Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Junichiro Sageshima
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - David Roth
- Division of Nephrology of the Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Linda Chen
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Warren Kupin
- Division of Nephrology of the Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Adela Mattiazzi
- Division of Nephrology of the Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Lissett Tueros
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Sandra Flores
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Lois Hanson
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Phillip Ruiz
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Rodrigo Vianna
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - George W Burke
- The Lillian Jean Kaplan Renal Transplant Center and the Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
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25
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Hameed AM, Pleass HC, Wong G, Hawthorne WJ. Maximizing kidneys for transplantation using machine perfusion: from the past to the future: A comprehensive systematic review and meta-analysis. Medicine (Baltimore) 2016; 95:e5083. [PMID: 27749583 PMCID: PMC5059086 DOI: 10.1097/md.0000000000005083] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/11/2016] [Accepted: 09/15/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The two main options for renal allograft preservation are static cold storage (CS) and machine perfusion (MP). There has been considerably increased interest in MP preservation of kidneys, however conflicting evidence regarding its efficacy and associated costs have impacted its scale of clinical uptake. Additionally, there is no clear consensus regarding oxygenation, and hypo- or normothermia, in conjunction with MP, and its mechanisms of action are also debated. The primary aims of this article were to elucidate the benefits of MP preservation with and without oxygenation, and/or under normothermic conditions, when compared with CS prior to deceased donor kidney transplantation. METHODS Clinical (observational studies and prospective trials) and animal (experimental) articles exploring the use of renal MP were assessed (EMBASE, Medline, and Cochrane databases). Meta-analyses were conducted for the comparisons between hypothermic MP (hypothermic machine perfusion [HMP]) and CS (human studies) and normothermic MP (warm (normothermic) perfusion [WP]) compared with CS or HMP (animal studies). The primary outcome was allograft function. Secondary outcomes included graft and patient survival, acute rejection and parameters of tubular, glomerular and endothelial function. Subgroup analyses were conducted in expanded criteria (ECD) and donation after circulatory (DCD) death donors. RESULTS A total of 101 studies (63 human and 38 animal) were included. There was a lower rate of delayed graft function in recipients with HMP donor grafts compared with CS kidneys (RR 0.77; 95% CI 0.69-0.87). Primary nonfunction (PNF) was reduced in ECD kidneys preserved by HMP (RR 0.28; 95% CI 0.09-0.89). Renal function in animal studies was significantly better in WP kidneys compared with both HMP (standardized mean difference [SMD] of peak creatinine 1.66; 95% CI 3.19 to 0.14) and CS (SMD of peak creatinine 1.72; 95% CI 3.09 to 0.34). MP improves renal preservation through the better maintenance of tubular, glomerular, and endothelial function and integrity. CONCLUSIONS HMP improves short-term outcomes after renal transplantation, with a less clear effect in the longer-term. There is considerable room for modification of the process to assess whether superior outcomes can be achieved through oxygenation, perfusion fluid manipulation, and alteration of perfusion temperature. In particular, correlative experimental (animal) data provides strong support for more clinical trials investigating normothermic MP.
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Affiliation(s)
- Ahmer M. Hameed
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research
- Department of Surgery, Westmead Hospital, Westmead
- Sydney Medical School, University of Sydney, Sydney
| | - Henry C. Pleass
- Department of Surgery, Westmead Hospital, Westmead
- Sydney Medical School, University of Sydney, Sydney
- Department of Surgery, Royal Prince Alfred Hospital, Camperdown
| | - Germaine Wong
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research
- Sydney School of Public Health, University of Sydney
- Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Wayne J. Hawthorne
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research
- Department of Surgery, Westmead Hospital, Westmead
- Sydney Medical School, University of Sydney, Sydney
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26
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Paloyo S, Sageshima J, Gaynor JJ, Chen L, Ciancio G, Burke GW. Negative impact of prolonged cold storage time before machine perfusion preservation in donation after circulatory death kidney transplantation. Transpl Int 2016; 29:1117-25. [PMID: 27421771 DOI: 10.1111/tri.12818] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 02/23/2016] [Accepted: 07/13/2016] [Indexed: 01/26/2023]
Abstract
Kidney grafts are often preserved initially in static cold storage (CS) and subsequently on hypothermic machine perfusion (MP). However, the impact of CS/MP time on transplant outcome remains unclear. We evaluated the effect of prolonged CS/MP time in a single-center retrospective cohort of 59 donation after circulatory death (DCD) and 177 matched donation after brain death (DBD) kidney-alone transplant recipients. With mean overall CS/MP times of 6.0 h/30.0 h, overall incidence of delayed graft function (DGF) was higher in DCD transplants (30.5%) than DBD transplants (7.3%, P < 0.0001). In logistic regression, DCD recipient (P < 0.0001), longer CS time (P = 0.0002), male recipient (P = 0.02), and longer MP time (P = 0.08) were associated with higher DGF incidence. In evaluating the joint effects of donor type (DBD vs. DCD), CS time (<6 vs. ≥6 h), and MP time (<36 vs. ≥36 h) on DGF incidence, one clearly sees an unfavorable effect of MP time ≥36 h (P = 0.003) across each donor type and CS time stratum, whereas the unfavorable effect of CS time ≥6 h (P = 0.01) is primarily seen among DCD recipients. Prolonged cold ischemia time had no unfavorable effect on renal function or graft survival at 12mo post-transplant. Long CS/MP time detrimentally affects early DCD/DBD kidney transplant outcome when grafts were mainly preserved by MP; prolonged CS time before MP has a particularly negative impact in DCD kidney transplantation.
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Affiliation(s)
- Siegfredo Paloyo
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA
| | - Junichiro Sageshima
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA.
| | - Jeffrey J Gaynor
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA
| | - Linda Chen
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA
| | - Gaetano Ciancio
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA
| | - George W Burke
- Department of Surgery, University of Miami Miller School of Medicine and Miami Transplant Institute, Miami, FL, USA
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27
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Ciancio G, Tryphonopoulos P, Gaynor J, Guerra G, Sageshima J, Roth D, Chen L, Kupin W, Mattiazzi A, Tueros L, Flores S, Hanson L, Powell R, Ruiz P, Vianna R, Burke G. Pilot Randomized Trial of Tacrolimus/Everolimus vs Tacrolimus/Enteric-Coated Mycophenolate Sodium in Adult, Primary Kidney Transplant Recipients at a Single Center. Transplant Proc 2016; 48:2006-10. [DOI: 10.1016/j.transproceed.2016.03.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/19/2016] [Accepted: 03/01/2016] [Indexed: 10/21/2022]
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28
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Gaynor JJ, Ciancio G, Guerra G, Sageshima J, Roth D, Goldstein MJ, Chen L, Kupin W, Mattiazzi A, Tueros L, Flores S, Hanson L, Ruiz P, Vianna R, Burke GW. Lower tacrolimus trough levels are associated with subsequently higher acute rejection risk during the first 12 months after kidney transplantation. Transpl Int 2015; 29:216-26. [DOI: 10.1111/tri.12699] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 08/03/2015] [Accepted: 09/29/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Jeffrey J. Gaynor
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Gaetano Ciancio
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Giselle Guerra
- Miami Transplant Institute; Department of Medicine; University of Miami Miller School of Medicine; Miami FL USA
| | - Junichiro Sageshima
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - David Roth
- Miami Transplant Institute; Department of Medicine; University of Miami Miller School of Medicine; Miami FL USA
| | - Michael J. Goldstein
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Linda Chen
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Warren Kupin
- Miami Transplant Institute; Department of Medicine; University of Miami Miller School of Medicine; Miami FL USA
| | - Adela Mattiazzi
- Miami Transplant Institute; Department of Medicine; University of Miami Miller School of Medicine; Miami FL USA
| | - Lissett Tueros
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Sandra Flores
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Lois Hanson
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Phillip Ruiz
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - Rodrigo Vianna
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
| | - George W. Burke
- Miami Transplant Institute; Department of Surgery; University of Miami Miller School of Medicine; Miami FL USA
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Dion MS, McGregor TB, McAlister VC, Luke PP, Sener A. Hypothermic machine perfusion improves Doppler ultrasonography resistive indices and long-term allograft function after renal transplantation: a single-centre analysis. BJU Int 2015; 116:932-7. [PMID: 25327417 DOI: 10.1111/bju.12960] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVES To evaluate whether hypothermic machine perfusion (HMP) of transplanted kidneys can improve long-term renal allograft function compared with static cold storage (CS). METHODS We evaluated whether graft Doppler ultrasonography resistive indices improved with the use of HMP compared with CS preservation, and examined whether these improvements were predictive of long-term graft function. A total of 30 kidney transplants (15 pairs) were examined. One of the kidney pairs was placed on CS and transplanted first (CS group, n = 15). The other kidney of each pair was placed on HMP and transplanted after the CS group (HMP group, n = 15). Doppler ultrasonography was performed on days 1 and 7 after transplantation and resistive indices were evaluated. The estimated glomerular filtration rate (eGFR) was monitored for 24 months after transplantation. RESULTS Despite longer cold ischaemia times, kidneys maintained with HMP had lower resistive indices (P = 0.005) with correspondingly higher eGFR throughout the follow-up. Subgroup analysis showed that the HMP-induced improvement in postoperative eGFR was greatest in kidneys obtained from donation after cardiac death (DCD), even at 2 years after transplantation (P = 0.008). CONCLUSIONS HMP of transplant kidneys appears to improve vascular resistance after transplantation and has a positive impact on long-term allograft function compared with CS in the population of recipients of DCD kidneys.
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Affiliation(s)
- Marie S Dion
- Department of Surgery, Division of Urology, Western University, London, Ontario, Canada
| | - Thomas B McGregor
- Department of Surgery, Division of Urology, University of Manitoba, Winnepeg, Manitoba, Canada
| | - Vivian C McAlister
- Department of Surgery, Division of Urology, Western University, London, Ontario, Canada.,Multi-Organ Transplant Program, London Health Sciences Center, London, Ontario, Canada
| | - Patrick P Luke
- Department of Surgery, Division of Urology, Western University, London, Ontario, Canada.,Multi-Organ Transplant Program, London Health Sciences Center, London, Ontario, Canada.,Matthew Mailing Center for Translational Transplant Studies, London Health Sciences Center, London, Ontario, Canada
| | - Alp Sener
- Department of Surgery, Division of Urology, Western University, London, Ontario, Canada.,Department of Microbiology and Immunology, Western University, London, Ontario, Canada.,Center for Human Immunology, Western University, London, Ontario, Canada.,Multi-Organ Transplant Program, London Health Sciences Center, London, Ontario, Canada.,Matthew Mailing Center for Translational Transplant Studies, London Health Sciences Center, London, Ontario, Canada
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. EXP CLIN TRANSPLANT 2015; 13. [DOI: 10.6002/ect.2014.0174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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31
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Gaynor JJ, Ciancio G, Guerra G, Sageshima J, Hanson L, Roth D, Goldstein MJ, Chen L, Kupin W, Mattiazzi A, Tueros L, Flores S, Barba LJ, Lopez A, Rivas J, Ruiz P, Vianna R, Burke GW. Multivariable risk of developing new onset diabetes after transplant-results from a single-center study of 481 adult, primary kidney transplant recipients. Clin Transplant 2015; 29:301-10. [PMID: 25581205 DOI: 10.1111/ctr.12510] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Understanding the relative contributions of baseline demographics and immunosuppressive therapy on NODAT risk may help in developing preventive strategies. METHODS Using our prospectively followed cohort of 481 adult, primary kidney transplant recipients without pre-transplant diabetes, we determined the significant baseline predictors for the hazard rate of developing NODAT via Cox stepwise regression. The multivariable influence of first BPAR (defined as a time-dependent covariate) was also tested. RESULTS Median follow-up was 57 mo post-transplant; the overall percentage who developed NODAT was 22.5% (108/481). Four baseline predictors of a greater NODAT hazard rate were found (by order of selection): higher BMI (p < 0.000001), planned maintenance with SRL (p = 0.0003), non-white recipient (p = 0.0004), and older recipient age (p = 0.0004). Approximately one-half of the 106 patients in the highest demographic risk category (BMI ≥25 kg/m(2) , non-white race, and age at transplant ≥40 yr) developed NODAT; actuarial NODAT risk ranged from 10% to 30% in the lower demographic risk categories. First BPAR was also associated with significantly higher NODAT in multivariable analysis (p = 0.02)-the highly elevated NODAT rate observed during the first few months post-transplant and following first BPAR appears to demonstrate the diabetogenic effect of using high-dose (intravenous) corticosteroids. CONCLUSIONS The disturbingly high NODAT rate found among patients having multiple demographic risk factors is still an important problem that awaits a better solution.
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Affiliation(s)
- Jeffrey J Gaynor
- Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, USA
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Gaynor JJ, Ciancio G, Guerra G, Sageshima J, Hanson L, Roth D, Goldstein MJ, Chen L, Kupin W, Mattiazzi A, Tueros L, Flores S, Barba LJ, Lopez A, Rivas J, Ruiz P, Vianna R, Burke GW. Single-centre study of 628 adult, primary kidney transplant recipients showing no unfavourable effect of new-onset diabetes after transplant. Diabetologia 2015; 58:334-45. [PMID: 25361829 DOI: 10.1007/s00125-014-3428-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/01/2014] [Indexed: 01/28/2023]
Abstract
AIMS/HYPOTHESIS To better understand the implications of new-onset diabetes after transplant (NODAT), we used our prospectively followed cohort of 628 adult primary kidney transplant recipients to determine the prognostic impact of pretransplant diabetes and NODAT. METHODS The study cohort consisted of all participants in four randomised immunosuppression trials performed at our centre since May 2000. For each cause-specific hazard analysed, Cox stepwise regression was used to determine a multivariable model of significant baseline predictors; the multivariable influence of having pretransplant diabetes and NODAT (t) (the latter defined as a zero-one, time-dependent covariate) was subsequently tested. Similar analyses of estimated glomerular filtration rate (eGFR) at 36 and 60 months post transplant were performed using stepwise linear regression. Finally, a repeated measures analysis of mean HbA1c as a function of diabetes category (pretransplant diabetes vs NODAT) and randomised trial (first to fourth) was performed. RESULTS Median follow-up was 56 months post transplant. Patients with pretransplant diabetes comprised 23.4% (147/628), and 22.5% (108/481) of the remaining patients developed NODAT. Pretransplant diabetes had no prognostic influence on first biopsy-proven acute rejection and death-censored graft failure hazard rates, nor on eGFR, but was associated with significantly higher rates of death with a functioning graft (DWFG) (p = 0.003), DWFG due to a cardiovascular event (p = 0.005) and infection that required hospitalisation (p = 0.03). NODAT (t) had no unfavourable impact on any of these hazard rates nor on eGFR, with actuarial freedom from DWFG remaining at over 90% among patients in pre- and post-NODAT states at 72 months post transplant/NODAT. Mean HbA1c for patients in the first to fourth randomised trials, averaged across diabetes category, decreased by trial (7.28%, 6.92%, 6.87% and 6.64% [56.1, 52.1, 51.6 and 49.1 mmol/mol], respectively; p = 0.02). CONCLUSIONS/INTERPRETATION Less-than-expected post-NODAT risk for graft loss and death may exist in the current climate of tighter glucose monitoring post transplant.
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Affiliation(s)
- Jeffrey J Gaynor
- Miami Transplant Institute, Department of Surgery, University of Miami Miller School of Medicine, Highland Professional Building, 1801 NW 9th Avenue, Miami, FL, 33136, USA,
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Pretransplantation Recipient Regulatory T cell Suppressive Function Predicts Delayed and Slow Graft Function after Kidney Transplantation. Transplantation 2014; 98:745-53. [DOI: 10.1097/tp.0000000000000219] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
PURPOSE We describe a technique of complete intracorporeal renal autotransplantation with donor nephrectomy and transplantation performed in a minimally invasive fashion without extracting the kidney. MATERIALS AND METHODS We developed this technique of a completely intracorporeal robotic renal autotransplantation and determined the feasibility of this novel procedure. This includes a method of intracorporeal transarterial hypothermic renal perfusion using a perfusion catheter through a laparoscopic port. The procedure was successfully applied in a 56-year-old man with extensive left ureteral loss after failed ureteroscopy for ureterolithiasis. RESULTS Robotic donor nephrectomy was performed with a warm ischemia time of 2.3 minutes. Subsequently cold ischemia was achieved by intracorporeal hypothermic renal perfusion for 95.5 minutes. Vascular anastomoses and ureteroureterostomy in the ipsilateral pelvis were completed after donor nephrectomy with a total overall surgeon console time of 334 minutes. Venous and arterial anastomosis times were 17.3 and 21.3 minutes, respectively. Estimated blood loss was less than 50 ml. There were no complications and the patient was discharged home on postoperative day 1 after normal Doppler transplant renal ultrasound. Postoperative renal scan at 6 weeks, intravenous urogram at 8 weeks and computerized tomography urography at 5 months revealed normal function and successful ureteral reconstruction. CONCLUSIONS We report the feasibility of a technique of a completely intracorporeal robotic renal autotransplantation. This operation may be considered in select patients in the hands of experienced robotic surgeons. However, further refinement is required as this novel procedure is cautiously reproduced and adopted by others.
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The Benefits of Pulsatile Machine Perfusion of Standard Criteria Deceased Donor Kidneys at a Geographically Remote Transplant Center. ASAIO J 2014; 60:76-80. [DOI: 10.1097/mat.0000000000000014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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36
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Suszynski TM, Rizzari MD, Scott WE, Eckman PM, Fonger JD, John R, Chronos N, Tempelman LA, Sutherland DER, Papas KK. Persufflation (gaseous oxygen perfusion) as a method of heart preservation. J Cardiothorac Surg 2013; 8:105. [PMID: 23607734 PMCID: PMC3639186 DOI: 10.1186/1749-8090-8-105] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 03/11/2013] [Indexed: 01/10/2023] Open
Abstract
Persufflation (PSF; gaseous oxygen perfusion) is an organ preservation technique with a potential for use in donor heart preservation. Improved heart preservation with PSF may improve outcomes by maintaining cardiac tissue quality in the setting of longer cold ischemia times and possibly increasing the number of donor hearts available for allotransplant. Published data suggests that PSF is able to extend the cold storage times for porcine hearts up to 14 hours without compromising viability and function, and has been shown to resuscitate porcine hearts following donation after cardiac death. This review summarizes key published work on heart PSF, including prospective implications and future directions for PSF in heart transplantation. We emphasize the potential impact of extending preservation times and expanding donor selection criteria in heart allotransplant. Additionally, the key issues that need to be addressed before PSF were to become a widely utilized preservation strategy prior to clinical heart transplantation are summarized and discussed.
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Affiliation(s)
- Thomas M Suszynski
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
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Podocyte foot process effacement in postreperfusion allograft biopsies correlates with early recurrence of proteinuria in focal segmental glomerulosclerosis. Transplantation 2013; 93:1238-44. [PMID: 22499148 DOI: 10.1097/tp.0b013e318250234a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Focal segmental glomerulosclerosis (FSGS) is a relatively prevalent glomerular disorder that often progresses to end-stage renal disease. Thirty to 80% of kidney transplant (KT) recipients with FSGS will experience recurrence characterized by proteinuria and podocyte damage. We hypothesized that the degree of podocyte foot process (FP) effacement in postreperfusion transplant biopsies can be used to predict the development of clinical recurrence of FSGS. METHOD Nineteen pairs of pre- and postreperfusion biopsy specimens were studied. We evaluated the degree of FP effacement in postreperfusion KT biopsies by counting the number of widened FP per capillary loop. Early recurrence of FSGS was defined as development of nephrotic range proteinuria between days 3 and 30 posttransplant. RESULTS Early recurrence occurred in 7 of 19 grafts (36.8%) at a mean of 4.29±1.89 days. The mean score of FP effacement in postreperfusion allograft biopsies was 0.72±0.31 and 1.35±0.63 in the nonrecurrent and recurrent group, respectively (P=0.039). There was an association between FP effacement and proteinuria (P = 0.04). The FP effacement score predicts early recurrence with a sensitivity of 71.4% and specificity of 91.7%. CONCLUSION FP effacement can be observed within minutes after reperfusion in renal transplantation of recipients with FSGS that will ultimately develop recurrent FSGS. This suggests a key role for the podocyte injury in the pathogenesis of recurrent FSGS and further supports the presence of circulating factors causing FP effacement. The FP effacement score in the postreperfusion KT biopsy may become a useful predictive test if validated in larger studies.
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Patel SK, Pankewycz OG, Nader ND, Zachariah M, Kohli R, Laftavi MR. Prognostic utility of hypothermic machine perfusion in deceased donor renal transplantation. Transplant Proc 2013; 44:2207-12. [PMID: 22974956 DOI: 10.1016/j.transproceed.2012.07.129] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UNLABELLED Pulsatile pump perfusion of kidney transplants is known to decrease delayed graft function (DGF) and improve 1 year graft survival when compared to static cold preservation. Kidneys with better flow and resistance parameters on perfusion are likely to have a better post transplant function. These parameters are commonly used to evaluate kidneys being considered for transplantation. This study assesses the time frame for a kidney within which it reaches optimal perfusion parameters. All kidneys pumped between 5/2006 and 9/2009 on a Lifeport© kidney transporter at our local organ procurement agency were studied. 190 kidneys were evaluated and then divided into two groups based on whether terminal flows increased or declined after prolonged perfusion. All kidneys were assessed for changes in flow (F), resistance (R) and temperature at 15 minute intervals. Discards, DGF and one year graft survival were noted. The Student paired t test and Chi-square analysis were used to compare data. A multiple logistic regression analysis was performed to study independent predictors of DGF on pump perfusion. RESULTS For all kidneys, the mean initial flow was 59 ± 35 mL/min which improved to an average flow of 128 ± 38 mL/min with continued perfusion. The maximal flow and terminal flows were 148 ± 51 and 135 ± 38 mL/min respectively. The flows at 2, 4, and 6 hours was 125 ± 41, 128 ± 42 and 130 ± 39 mL/min respectively. Kidneys that improved on continued perfusion had a significantly lower discard rate (20 vs 34% p < 0.05), but a higher incidence of DGF (64 vs 39%, P < .05). One year graft loss (death censored) was comparable in the two groups. (4/42 vs. 3/33, P = .94). Resistance at 2, 4, and 6 hours was predictive of DGF, as was donor anoxia and cerebrovascular accident (CVA) as the cause of death. CONCLUSIONS Kidneys on pulsatile pump perfusion tend to show improved flows and decreased resistance over time. The average flow for a kidney is reached by 2 hours. Those kidneys that start with lower flow rates that improve after 2 hours with continued perfusion are less likely to be discarded but are still associated with a greater incidence of delayed graft function. Resistance at 2 hours predicts DGF while initial resistance predicts one year graft survival.
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Affiliation(s)
- S K Patel
- Transplantation Surgery, Department of Surgery, University at Buffalo (SUNY), Buffalo, NY 14215, USA.
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40
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Ciancio G, Sageshima J, Chen L, Gaynor JJ, Hanson L, Tueros L, Montenora-Velarde E, Gomez C, Kupin W, Guerra G, Mattiazzi A, Fornoni A, Pugliese A, Roth D, Wolf M, Burke GW. Advantage of rapamycin over mycophenolate mofetil when used with tacrolimus for simultaneous pancreas kidney transplants: randomized, single-center trial at 10 years. Am J Transplant 2012; 12:3363-76. [PMID: 22946986 PMCID: PMC4479274 DOI: 10.1111/j.1600-6143.2012.04235.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Simultaneous pancreas kidney transplantation (SPKT) is the treatment of choice for patients with type 1 diabetes and end-stage renal disease. Rapamycin and mycophenolate mofetil (MMF) have been used for maintenance immunosuppression with tacrolimus in SPKT; however, long-term outcomes are lacking. From September 2000 through December 2009, 170 SPKT recipients were enrolled in a randomized, prospective trial receiving Rapamycin (n = 84) or MMF (n = 86). All patients received dual induction therapy with thymoglobulin and daclizumab, and low-dose maintenance tacrolimus and corticosteroids. Compared to MMF, rates of freedom from first biopsy-proven acute kidney or pancreas rejection were superior for Rapamycin at year 1 (kidney: 100% vs. 88%; P = 0.001; pancreas: 99% vs. 92%; P = 0.04) and at year 10 (kidney: 88% vs. 71%, P = 0.01; pancreas: 99% vs. 89%, P = 0.01). The higher rates of rejection were associated with withholding MMF (vs. Rapamycin, p = 0.009), generally for gastrointestinal or bone marrow toxicity. There was no significant difference in creatinine, proteinuria, c-peptide, viral infections, lymphoproliferative disorders or posttransplant diabetes. HbA1C and lipid levels were normal in both groups, although higher in the Rapamycin arm. There were no significant differences in patient or allograft survival. In this 10-year SPKT study, Rapamycin in combination with tacrolimus was better tolerated and more effective than MMF. Overall, the patient and allograft survival were equivalent.
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Affiliation(s)
- G. Ciancio
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - J. Sageshima
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - L. Chen
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - J. J. Gaynor
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - L. Hanson
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - L. Tueros
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - E. Montenora-Velarde
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - C. Gomez
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - W. Kupin
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - G. Guerra
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - A. Mattiazzi
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - A. Fornoni
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL,Diabetes Research Institute, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - A. Pugliese
- Diabetes Research Institute, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - D. Roth
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - M. Wolf
- Department of Medicine, Division of Nephrology and Hypertension, University of Miami, Leonard M. Miller School of Medicine, Miami, FL
| | - G. W. Burke
- Department of Surgery, Lillian Jean Kaplan Renal Transplant Center of the Division of Kidney and Pancreas Transplantation, University of Miami, Leonard M. Miller School of Medicine, Miami, FL,Diabetes Research Institute, University of Miami, Leonard M. Miller School of Medicine, Miami, FL,Corresponding author: George W. Burke III,
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Lodhi SA, Lamb KE, Uddin I, Meier-Kriesche HU. Pulsatile pump decreases risk of delayed graft function in kidneys donated after cardiac death. Am J Transplant 2012; 12:2774-80. [PMID: 22823748 DOI: 10.1111/j.1600-6143.2012.04179.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Organ storage techniques have been under scrutiny to determine the best preservation method, particularly in donation after cardiac death (DCD) kidneys. Conflicting literature on the benefit of pulsatile perfusion (PP) over cold storage (CS) warrants further investigation. We analyzed the risk of developing delayed graft function (DGF) in recipients of DCD and donation after brain death (DBD) kidneys undergoing PP or CS. We stratified on basis of cold ischemic time (CIT) to determine the interaction of preservation techniques, CIT and DCD kidneys on developing DGF. Of 54 136 recipients, 4923 received DCD kidneys of which 3330 (67%) underwent PP. Of 49 213 DBD recipients, 7531 (15%) underwent PP. DCD had a higher risk of DGF versus DBD (adjusted odds ratio, AOR 3.2; 3.0-3.5). PP kidneys had less DGF (AOR 0.59; 0.56-0.63) compared to CS. Interaction models of method by donor type referenced to PP/DBD revealed CS/DBD kidneys had higher DGF (AOR 1.8; 1.7-1.9), whereas CS/DCD kidneys had the highest risk of DGF (AOR 5.01; 4.43-5.67). Even though suggestive for a benefit of PP on DGF, this retrospective analysis cannot address whether this is an intrinsic effect of PP or is associated with the logistics of PP such as discard of DCD kidneys based on pump parameters.
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Affiliation(s)
- S A Lodhi
- Division of Nephrology, Department of Medicine, Hypertension and Solid Organ Transplant, University of Florida, Gainesville, FL, USA
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Optimized outcomes for renal allografts with cold ischemic times of 20 h or greater. Int Urol Nephrol 2012; 44:1417-23. [DOI: 10.1007/s11255-012-0235-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 06/15/2012] [Indexed: 11/26/2022]
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43
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Ciancio G, Gaynor JJ, Sageshima J, Guerra G, Zarak A, Roth D, Brown R, Kupin W, Chen L, Hanson L, Tueros L, Ruiz P, Livingstone AS, Burke GW. Randomized Trial of Dual Antibody Induction Therapy With Steroid Avoidance in Renal Transplantation. Transplantation 2011; 92:1348-57. [DOI: 10.1097/tp.0b013e3182384b21] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Ciancio G, Gaynor JJ, Sageshima J, Roth D, Kupin W, Guerra G, Tueros L, Zarak A, Hanson L, Ganz S, Chen L, Ruiz P, Livingstone AS, Burke GW. Machine perfusion following static cold storage preservation in kidney transplantation: donor-matched pair analysis of the prognostic impact of longer pump time. Transpl Int 2011; 25:34-40. [DOI: 10.1111/j.1432-2277.2011.01364.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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Prolonged lymphocyte depletion by single-dose rabbit anti-thymocyte globulin and alemtuzumab in kidney transplantation. Transpl Immunol 2011; 25:104-11. [DOI: 10.1016/j.trim.2011.07.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Revised: 07/06/2011] [Accepted: 07/07/2011] [Indexed: 12/17/2022]
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47
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Ciancio G, Gaynor JJ, Zarak A, Sageshima J, Guerra G, Roth D, Brown R, Kupin W, Chen L, Tueros L, Hanson L, Ruiz P, Burke GW. Randomized trial of mycophenolate mofetil versus enteric-coated mycophenolate sodium in primary renal transplantation with tacrolimus and steroid avoidance: four-year analysis. Transplantation 2011; 91:1198-205. [PMID: 21107305 DOI: 10.1097/tp.0b013e3182003d76] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Our single-center, open-labeled randomized trial of 150 adult, primary kidney transplant recipients receiving 2 g mycophenolate mofetil (group A, n=75) versus 1.440 g enteric-coated mycophenolate sodium (group B, n=75), with reduced maintenance tacrolimus dosing, steroid elimination at 1 week, and combined rabbit antithymocyte globulin/daclizumab induction, previously showed at 1 year posttransplant low biopsy-proven acute rejection (BPAR), acceptably high renal function, and no differences in incidence of symptomatic gastrointestinal (GI) side effects between the two groups. This report includes 3 additional years of follow-up with similar endpoints as in the original study. METHODS Rates of developing first BPAR, graft failure (death censored and uncensored), death, and adverse events (GI toxicity, infections requiring hospitalization, and new onset diabetes mellitus after transplantation) during the first 48 months posttransplant were compared between the two groups using an intent-to-treat approach. RESULTS At 48 months posttransplant, patient/graft survival in groups A and B was 97%/90% vs. 96%/86%, respectively (not significant [NS]). Twenty-seven patients experienced BPAR (including borderline), with actuarial 19% (14/75) vs. 18% (13/75) in groups A and B, respectively (NS). Geometric mean*/standard error serum creatinine level and arithmetic mean calculated glomerular filtration rate (±standard error) at 48 months in groups A and B, respectively, were 1.25*/1.06 and 69.2±3.9 vs. 1.20*/1.05 and 71.2±3.2 (NS). Incidence of new onset diabetes mellitus after transplantation (22% vs. 15%), infections requiring hospitalization (31% vs. 39%), and GI side effects (45% vs. 52%) seemed equivalent. CONCLUSIONS This is the first long-term, randomized trial comparing enteric-coated mycophenolate sodium versus mycophenolate mofetil along with reduced maintenance tacrolimus dosing and steroid avoidance, which resulted in similarly low-BPAR rates, acceptably high renal function at 48 months, and an equivalent side effect profile.
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Affiliation(s)
- Gaetano Ciancio
- The Lillian Jean Kaplan Renal Transplant Center of the Division of Transplantation, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33101, USA.
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Hypothermic kidney preservation: a remembrance of the past in the future? Curr Opin Organ Transplant 2011; 16:162-8. [DOI: 10.1097/mot.0b013e3283446b07] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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