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Turner EM, Cassidy AR, Rea KE, Smith-Paine JM, Wolfe KR. [Formula: see text] The multifaceted role of neuropsychology in pediatric solid organ transplant: preliminary guidelines and strategies for clinical practice. Child Neuropsychol 2024; 30:503-537. [PMID: 37291962 DOI: 10.1080/09297049.2023.2221759] [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: 11/23/2022] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
The incidence of pediatric solid organ transplantation (SOT) has increased in recent decades due to medical and surgical advances as well as improvements in organ procurement. Survival rates for pediatric kidney, liver, and heart transplantation are above 85% but patients continue to experience complex healthcare needs over their lifetime. Long-term developmental and neuropsychological sequelae are becoming increasingly recognized in this population, although preliminary work is limited and deserves further attention. Neuropsychological weaknesses are often present prior to transplantation and may be related to underlying congenital conditions as well as downstream impact of the indicating organ dysfunction on the central nervous system. Neuropsychological difficulties pose risk for functional complications, including disruption to adaptive skill development, social-emotional functioning, quality of life, and transition to adulthood. The impact of cognitive dysfunction on health management activities (e.g., medication adherence, medical decision-making) is also an important consideration given these patients' lifelong medical needs. The primary aim of this paper is to provide preliminary guidelines and clinical strategies for assessment of neuropsychological outcomes across SOT populations for pediatric neuropsychologists and the multidisciplinary medical team, including detailing unique and shared etiologies and risk factors for impairment across organ types, and functional implications. Recommendations for clinical neuropsychological monitoring as well as multidisciplinary collaboration within pediatric SOT teams are also provided.
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Affiliation(s)
- Elise M Turner
- Department of Pediatrics, Section of Neurology, Children's Hospital Colorado/University of Colorado School of Medicine, Aurora, CO, USA
| | - Adam R Cassidy
- Departments of Psychiatry & Psychology and Pediatric & Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Psychiatry and Behavioral Sciences, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kelly E Rea
- Division of Pediatric Psychology, Department of Pediatrics, C. S. Mott Children's Hospital, Michigan Medicine, Ann Arbor, MI, USA
| | - Julia M Smith-Paine
- Division of Developmental-Behavioral Pediatrics & Psychology, Department of Pediatrics, Rainbow Babies & Children's Hospital, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Kelly R Wolfe
- Department of Pediatrics, Section of Neurology, Children's Hospital Colorado/University of Colorado School of Medicine, Aurora, CO, USA
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Berens N, Buchbinder M. How Should We Allocate Divisible Resources? An Overlooked Question. THE JOURNAL OF CLINICAL ETHICS 2024; 35:59-64. [PMID: 38373335 DOI: 10.1086/728143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
AbstractThe ethical allocation of scarce medical resources has received significant attention, yet a key question remains unaddressed: how should scarce, divisible resources be allocated? We present a case from the COVID-19 pandemic in which scarce resources were divided among patients rather than allocated to some patients over others. We assess how widely accepted allocation principles could be applied to this case, and we show how these principles provide insufficient guidance. We then propose alternatives that may help guide decision-making in such cases, and we evaluate the possibility of treating patients equally by dividing resources equally. Resource scarcity is not limited to pandemic situations, and many healthcare resources are divisible. This question-how to allocate these divisible resources-deserves greater attention from bioethics.
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Rastogi R, Vargas PA, Oberholzer J, Pelletier S, Goldaracena N. Simultaneous split liver/kidney transplantation: A national and single center experience report. Clin Transplant 2024; 38:e15208. [PMID: 38041492 DOI: 10.1111/ctr.15208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/26/2023] [Accepted: 11/19/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND End-stage liver disease (ESLD) and end-stage renal disease (ESRD) are prevalent diseases for which the definitive treatment is transplantation. With limited organ supply, strategies to maximize organ availability has led to increasing rates of split liver transplantations for ESLD patients. Therefore, simultaneous split liver and kidney transplantations (SSLK) for patients with ESLD and ESRD could represent a treatment option for comorbid patients. However, current practice and outcomes after SSLK are unknown. METHODS We aim to report national trends and our experience with patients undergoing SSLK. We performed a retrospective review of the United Network for Organ Sharing (UNOS) Standard Transplant Analysis and Research file from January 2011-April 2022. Descriptive analysis of preoperative characteristics, postoperative outcomes and actuarial graft and patient survivals are reported. RESULTS National review of the UNOS transplant registry from 2011-2021 of adult patients undergoing initial transplantation via SSLK demonstrates that this procedure remains uncommon, with only 76 such cases captured in that time. Nevertheless, survival rates at 1, 3, and 5 years remains robust, at 94%, 92%, and 90% for patients overall, 90%, 88%, 88%, for the liver graft, and 93%, 91%, 88% for the kidney graft, respectively. Review of a single center experience with three such patients from 2019-2021 has shown a safe, enduring transplant option with no graft complications seen. CONCLUSIONS SSLK is both safe and a feasible option to optimize organ supply while allowing recipients to receive quality liver and kidney grafts and should be considered more often by transplant centers going forward.
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Affiliation(s)
- Radhika Rastogi
- Department of Surgery, Division of Transplantation, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Paola A Vargas
- Department of Surgery, Division of Transplantation, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Jose Oberholzer
- Department of Surgery, Division of Transplantation, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Shawn Pelletier
- Department of Surgery, Division of Transplantation, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Nicolas Goldaracena
- Department of Surgery, Division of Transplantation, University of Virginia Health System, Charlottesville, Virginia, USA
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Vargas PA, Cullen JM, Dalzell C, DiPaola F, Pelletier S, Soltys KA, Mazariegos GV, Oberholzer J, Goldaracena N. Increased use of split liver grafts in adult recipients following implementation of a pediatric liver transplant program. Pediatr Transplant 2022; 26:e14159. [PMID: 34687473 DOI: 10.1111/petr.14159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Split liver transplantation (SLT) is a strategy to address organ shortage, but is a technically more demanding procedure than whole graft liver transplantation (LT). We aimed to determine the outcomes following SLT in adult recipients as well as to highlight the impact that having a pediatric LT program has on SLT implementation. METHODS All SLTs conducted at a single-center from 2010 to 2019 were identified. Patient data was obtained through retrospective review of the electronic medical record. Kaplan-Meier analysis assessed primary outcomes of 1-,3-, and 5-year graft and patient survival. RESULTS We identified 37 SLTs performed at our institution from 2010 to 2019. Twenty-four donated livers resulted in 21 extended right lobes and 16 left lateral segments for adults and pediatrics recipients, respectively. Eighty-one percent (30/37) of the SLTs were performed after introduction of the combined pediatric program in 2016. 13/24 donor livers were split with both grafts allocated and used at our institution and 92% occurred after introduction of the pediatric program. Graft survival rates at 1-, 3-, and 5-years were 94% in adult recipients and 100% for all time periods in pediatric recipients. Actuarial post-transplant patient survival was 100% at 1-, 3-, and 5-years in both. CONCLUSIONS The introduction of a pediatric liver transplantation program resulted in more than a fourfold increase in the number of SLTs performed at our center. Increase in allocation and use of both grafts at our institution was also seen.
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Affiliation(s)
- Paola Andrea Vargas
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Jonathan Michael Cullen
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Christina Dalzell
- School of Medicine, University of Virginia, Charlottesville, Virginia, USA
| | - Frank DiPaola
- Division of Pediatric Gastroenterology, Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA
| | - Shawn Pelletier
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Kyle A Soltys
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh and Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - George Vincent Mazariegos
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA.,Hillman Center for Pediatric Transplantation, UPMC Children's Hospital of Pittsburgh and Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Jose Oberholzer
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Nicolas Goldaracena
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
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Vargas PA, Dalzell C, Robinson T, Cunningham M, Henry Z, Stotts MJ, Su F, Argo C, Pelletier S, Oberholzer J, Goldaracena N. Split liver transplantation with extended right grafts on adult recipients: A propensity score matching analysis. Clin Transplant 2022; 36:e14801. [PMID: 35997030 DOI: 10.1111/ctr.14801] [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: 02/21/2022] [Revised: 05/24/2022] [Accepted: 08/14/2022] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Split liver transplantation (SLT) emerged due to its potential to contribute to the organ pool and reduce organ shortage. However, SLT is technically challenging and has been associated with higher rates of postoperative complications leading to concerns about graft and patient survival. Moreover, there are few studies on matched-pair adult recipients of SLT and whole-liver transplant (WLT), with conflicting results. METHODS This retrospective study analyze outcomes among adults who underwent SLT at our institution from 2010 to 2019. A 1:1 propensity score matching analysis was performed based on important donor and recipient variables. Baseline characteristics and postoperative outcomes were analyzed and compared between groups. Actuarial graft and patient survival were analyzed by KM curves. RESULTS Out of 592 adults receiving a LT in our institution, 21 SLT adult recipients were identified and matched with 21 adults undergoing WLT. As expected donor age was significantly lower in SLT recipients (16 (15-22) vs. 32 (17-47), P = .012). Additional donor characteristics, including anthropometrics, and ischemic times were similar between groups. Baseline recipient characteristics and postoperative outcomes, including length of stay, vascular complications, biliary complications, and re-transplantation were comparable between SLT and WLT recipients. Graft (95/95/95 vs. 100/94/94, P = .98) and patient (100/100/100 vs. 100/94/94, P = .30) survival at 1-, 3-, 5-years, were similar between the SLT- and WLT group, respectively. CONCLUSION Split liver transplantation has the potential to increase the availability of organs for adult recipients without compromising individual outcomes.
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Affiliation(s)
- Paola A Vargas
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Christina Dalzell
- School of Medicine, University of Virginia, Charlottesville, Virginia, USA
| | - Todd Robinson
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Michaela Cunningham
- Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Zachary Henry
- Department of Medicine, Division of Gastroenterology, University of Virginia, Charlottesville, Virginia, USA
| | - Matthew J Stotts
- Department of Medicine, Division of Gastroenterology, University of Virginia, Charlottesville, Virginia, USA
| | - Feng Su
- Department of Medicine, Division of Gastroenterology, University of Virginia, Charlottesville, Virginia, USA
| | - Curtis Argo
- Department of Medicine, Division of Gastroenterology, University of Virginia, Charlottesville, Virginia, USA
| | - Shawn Pelletier
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Jose Oberholzer
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Nicolas Goldaracena
- Division of Transplant Surgery, Department of Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
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Tabrizian P, Holzner ML, Adamson D, Balci D, Jung YK, Arnon R, Chu J, Emre S, Facciuto M, Schwartz M, Moon J, Iyer K, Florman S. Left lateral segment pediatric liver transplantation: a 25 year experience at Mount Sinai. HPB (Oxford) 2022; 24:817-824. [PMID: 34742650 DOI: 10.1016/j.hpb.2021.09.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/08/2021] [Accepted: 09/30/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Outcomes of left lateral segment (LLS) grafts in pediatric recipients were compared between living (LD-LLS) and deceased donor (DD-LLS) grafts. METHODS 195 LLS grafts (99DD-LLS-96LD-LLS) were analyzed with a median follow-up of 9.1years. The primary endpoints were overall patient/graft survival. RESULTS LD-LLS grafts were younger (0.9vs.1.4years, p = 0.039), more likely to have a fulminant liver failure (17.9%vs.5.3%,p = 0.002), less likely to have a metabolic disorder (6.3%vs.25.5%,p = 0.002), and less likely to be undergoing retransplantation (5.3% vs.16.2%,p = 0.015). There was a trend toward decreased hepatic artery thrombosis in LD-LLS grafts (6.6% vs. 15.5%,p = 0.054). No differences in the overall biliary complications occurred. The LD-LLS group had prolonged survival compared to the DD-LLS group with 10-year survival rates of 81%, and 74% (p = 0.005), respectively. LD-LLS grafts had longer graft survival compared to DD-LLS grafts (10-year graft survival 85%vs.67%,p = 0.005). Recipient age >1year (HR 2.39,p = 0.026), aortic reconstruction (HR 2.12,p = 0.046) and vascular complication (HR 3.12,p < 0.001) were independent predictors of poor patient survival. Non-biliary liver disease (HR 2.17,p = 0.015), DD-LLS (HR 2.06,p = 0.034) and vascular complication (HR 4.61,p < 0.001) were independent predictors of poor graft survival. CONCLUSION The use of SLT remains a viable option with excellent long-term outcomes. We show improved graft and patient survival with living donor grafts.
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Affiliation(s)
- Parissa Tabrizian
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA.
| | - Matthew L Holzner
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Dylan Adamson
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Deniz Balci
- Department of Surgery and Liver Transplantation Unit, Ankara University School of Medicine, Ankara, Turkey
| | - Yun K Jung
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Ronen Arnon
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Jaime Chu
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Sukru Emre
- Department of Surgery, Section of Transplantation, Yale University School of Medicine, New Haven, CT, USA
| | - Marcelo Facciuto
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Myron Schwartz
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Jang Moon
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Kishore Iyer
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Sander Florman
- Recanati/Miller Transplantation Institute, Mount Sinai Medical Center, New York, NY, USA
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Lau NS, Liu K, McCaughan G, Crawford M, Pulitano C. Are split liver grafts a suitable option in high-risk liver transplant recipients? Curr Opin Organ Transplant 2021; 26:675-680. [PMID: 34653087 DOI: 10.1097/mot.0000000000000938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW To assess the outcomes of split liver transplantation (SLT) in adults and children and evaluate its role in high-risk recipients with a high model for end-stage liver disease (MELD) score, an urgent indication or requiring retransplantation. RECENT FINDINGS Split liver grafts in general have equivalent long-term survival outcomes to whole grafts despite an increase in biliary complications. Recent success and technical advances have encouraged use of these grafts in high-risk recipients. Split liver grafts can be used successfully in recipients with a high MELD score if there is adequate weight-matching. There are mixed results in urgent indication recipients and for retransplantation such that use in this group of patients remains controversial. SUMMARY SLT addresses donor shortages by facilitating the transplant of two recipients from the same donor liver. By using careful donor and recipient selection criteria, SLT can achieve equivalent long-term outcomes to whole grafts. These grafts have been used successfully in recipients with a high MELD score, but should be used selectively in urgent indication recipients and for retransplantation.
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Affiliation(s)
- Ngee-Soon Lau
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Ken Liu
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Geoffrey McCaughan
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Michael Crawford
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital
| | - Carlo Pulitano
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
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Lau NS, Jacques A, McCaughan G, Crawford M, Liu K, Pulitano C. Addressing the challenges of split liver transplantation through technical advances. A systematic review. Transplant Rev (Orlando) 2021; 35:100627. [PMID: 34052472 DOI: 10.1016/j.trre.2021.100627] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/08/2021] [Accepted: 05/17/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Split liver transplantation addresses donor shortages by facilitating the transplant of two recipients using one donor liver. Some still consider these grafts inferior due to prolonged cold ischaemia time and at times difficult vascular reconstruction. Techniques such as in-situ splitting, machine perfusion and interposition grafts may address these challenges and thereby address these concerns. The aim of this review is to assess these technical advances in split liver transplantation, their utility and outcomes. METHODS A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Keywords included 'split liver transplantation', 'arterial reconstruction', and 'machine perfusion'. Data found was synthesised into sections including: methods of splitting, full-left full-right splitting, donor cholangiography, machine perfusion and arterial reconstruction. RESULTS A total of 78 articles met inclusion criteria after screening of 151 eligible articles. These were subdivided into the following categories: in-situ (25), ex-vivo (25), full-left full-right splitting (15), donor cholangiography (2), machine perfusion (6), and arterial reconstruction (5). The in-situ splitting technique reduces the cold ischaemia time compared to the ex-vivo technique which may improve graft quality and liver splitting during normothermic machine perfusion is a novel technique with the potential to incorporate the best aspects of both techniques. Interposition grafts are often required during split liver transplantation but have an increased risk of hepatic artery thrombosis. CONCLUSION Advancements in technique have allowed many of the unique challenges of split liver transplantation to be overcome. Overall, this supports the use of split liver transplantation in broader and riskier settings and we advocate for liver transplant surgeons to not hesitate in using these grafts liberally and expanding their recipient selection criteria.
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Affiliation(s)
- Ngee-Soon Lau
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Andrew Jacques
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Geoffrey McCaughan
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Michael Crawford
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia
| | - Ken Liu
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Carlo Pulitano
- Australian National Liver Transplantation Unit, Royal Prince Alfred Hospital, Sydney, New South Wales 2050, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia.
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9
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Acun A, Oganesyan R, Uygun K, Yeh H, Yarmush ML, Uygun BE. Liver donor age affects hepatocyte function through age-dependent changes in decellularized liver matrix. Biomaterials 2021; 270:120689. [PMID: 33524812 DOI: 10.1016/j.biomaterials.2021.120689] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/19/2020] [Accepted: 01/18/2021] [Indexed: 02/08/2023]
Abstract
The only treatment available for end stage liver diseases is orthotopic liver transplantation. Although there is a big donor scarcity, many donor livers are discarded as they do not qualify for transplantation. Alternatively, decellularization of discarded livers can potentially render them transplantable upon recellularization and functional testing. The success of this approach will heavily depend on the quality of decellularized scaffolds which might show variability due to factors including age. Here we assessed the age-dependent differences in liver extracellular matrix (ECM) using rat and human livers. We show that the liver matrix has higher collagen and glycosaminoglycan content and a lower growth factor content with age. Importantly, these changes lead to deterioration in primary hepatocyte function potentially due to ECM stiffening and integrin-dependent signal transduction. Overall, we show that ECM changes with age and these changes significantly affect cell function thus donor age should be considered as an important factor for bioengineering liver substitutes.
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Affiliation(s)
- Aylin Acun
- Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Ruben Oganesyan
- Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Korkut Uygun
- Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Heidi Yeh
- Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Martin L Yarmush
- Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, USA; Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, USA
| | - Basak E Uygun
- Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA; Department of Surgery, Massachusetts General Hospital, Boston, MA, USA.
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10
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A Novel Surgical Technique to Assure Donor and Recipient Safety: Pyloric to Segment 4 Arterial Reconstruction. Transplant Direct 2020; 7:e639. [PMID: 33335979 PMCID: PMC7738044 DOI: 10.1097/txd.0000000000001095] [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: 06/19/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 12/03/2022] Open
Abstract
Background. Strategies to extend the pool of organs include and promote the use of segmental liver grafts. While performing a living donor left lateral segment (LLS) liver transplant and in split procedures, the hepatic artery´s division becomes critical when a dominant segment 4 artery (S4A) emerges from the left hepatic artery (LHA). We aim to describe a novel technique that consists of performing microsurgical reconstruction from the pyloric artery (PA) to S4A. Case Reports. A 45-y-old living donor was evaluated to use his LLS as a graft for a pediatric recipient. During the procedure, a dominant S4A born from the LHA was dissected. To obtain an appropriate LHA length and diameter for the recipient, it was necessary to transect it. An extended right lobe split graft was used in a 61-y-old patient. The S4A born from LHA had to be sectioned during the split procedure. In both cases, segment 4 remained incompletely perfused. The PA was dissected with enough length to be rotated, to perform a microsurgical anastomosis to the S4A, recovering parenchyma’s color and Doppler signal while vascular permeability was demonstrated using CT scan. There was no biliary or cut surface complication. Conclusions. PA to S4A reconstruction is a simple and novel technique that can be used for LLS and extended right lobe split graft and might contribute to increase donor selection and reduce living donor and recipient S4A-related complications.
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Yang G, Mahadik B, Mollot T, Pinsky J, Jones A, Robinson A, Najafali D, Rivkin D, Katsnelson J, Piard C, Fisher JP. Engineered Liver Tissue Culture in an In Vitro Tubular Perfusion System. Tissue Eng Part A 2020; 26:1369-1377. [PMID: 33054685 DOI: 10.1089/ten.tea.2020.0213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Liver disease and the subsequent loss of liver function is an enormous clinical challenge. A severe shortage of donor liver tissue greatly limits patients' options for a timely transplantation. Tissue engineering approaches offer a promising alternative to organ transplantation by engineering artificial implantable tissues. We have established a platform of cell-laden microbeads as basic building blocks to assemble macroscopic tissues via different mechanisms. This modular fabrication strategy possesses great potential for liver tissue engineering in a bottom-up manner. In this study, we encapsulated human hepatocytes into microbeads presenting a favorable microenvironment consisting of collagen and mesenchymal stem cells, and then we perfused the beads in a three-dimensional printed tubular perfusion bioreactor that promoted oxygen and medium diffusion to the impregnated cells. We noted high cell vitality and retention of parenchymal cell functionality for up to 30 days in this culture system. Our engineering-based approach led to the advancement in tissue size and long-term functionality of an artificial liver tissue in vitro.
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Affiliation(s)
- Guang Yang
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA.,NIBIB/NIH Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA
| | - Bhushan Mahadik
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA.,NIBIB/NIH Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA
| | - Trevor Mollot
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Julia Pinsky
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Athenia Jones
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Alexis Robinson
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Daniel Najafali
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Daniel Rivkin
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Jenny Katsnelson
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - Charlotte Piard
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA
| | - John P Fisher
- Tissue Engineering and Biomaterials Laboratory, Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland, USA.,NIBIB/NIH Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA
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12
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Driskill JH, Pan D. The Hippo Pathway in Liver Homeostasis and Pathophysiology. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2020; 16:299-322. [PMID: 33234023 DOI: 10.1146/annurev-pathol-030420-105050] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Studies of the regenerative capacity of the liver have converged on the Hippo pathway, a serine/threonine kinase cascade discovered in Drosophila and conserved from unicellular organisms to mammals. Genetic studies of mouse and rat livers have revealed that the Hippo pathway is a key regulator of liver size, regeneration, development, metabolism, and homeostasis and that perturbations in the Hippo pathway can lead to the development of common liver diseases, such as fatty liver disease and liver cancer. In turn, pharmacological targeting of the Hippo pathway may be utilized to boost regeneration and to prevent the development and progression of liver diseases. We review current insights provided by the Hippo pathway into liver pathophysiology. Furthermore, we present a path forward for future studies to understand how newly identified components of the Hippo pathway may control liver physiology and how the Hippo pathway is regulated in the liver.
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Affiliation(s)
- Jordan H Driskill
- Department of Physiology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA; , .,Medical Scientist Training Program, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Duojia Pan
- Department of Physiology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA; ,
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13
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Neuberger J. Retransplantation should be offered to children with liver graft failure. Med J Aust 2020; 213:456-457. [PMID: 33089493 DOI: 10.5694/mja2.50833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- James Neuberger
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, The United Kingdom
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14
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Michalik M, Gładyś A, Czekaj P. Differentiation of Cells Isolated from Afterbirth Tissues into Hepatocyte-Like Cells and Their Potential Clinical Application in Liver Regeneration. Stem Cell Rev Rep 2020; 17:581-603. [PMID: 32974851 PMCID: PMC8036182 DOI: 10.1007/s12015-020-10045-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
Toxic, viral and surgical injuries can pose medical indications for liver transplantation. The number of patients waiting for a liver transplant still increases, but the number of organ donors is insufficient. Hepatocyte transplantation was suggested as a promising alternative to liver transplantation, however, this method has some significant limitations. Currently, afterbirth tissues seem to be an interesting source of cells for the regenerative medicine, because of their unique biological and immunological properties. It has been proven in experimental animal models, that the native stem cells, and to a greater extent, hepatocyte-like cells derived from them and transplanted, can accelerate regenerative processes and restore organ functioning. The effective protocol for obtaining functional mature hepatocytes in vitro is still not defined, but some studies resulted in obtaining functionally active hepatocyte-like cells. In this review, we focused on human stem cells isolated from placenta and umbilical cord, as potent precursors of hepatocyte-like cells for regenerative medicine. We summarized the results of preclinical and clinical studies dealing with the introduction of epithelial and mesenchymal stem cells of the afterbirth origin to the liver failure therapy. It was concluded that the use of native afterbirth epithelial and mesenchymal cells in the treatment of liver failure could support liver function and regeneration. This effect would be enhanced by the use of hepatocyte-like cells obtained from placental and/or umbilical stem cells. Graphical abstract ![]()
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Affiliation(s)
- Marcin Michalik
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Aleksandra Gładyś
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Piotr Czekaj
- Department of Cytophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland.
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15
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Implementing of Active Brain-Dead Donor Identification Strategy in a Single Donor Center: One Year Experience. ACTA ACUST UNITED AC 2020; 56:medicina56080366. [PMID: 32707964 PMCID: PMC7466291 DOI: 10.3390/medicina56080366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 11/24/2022]
Abstract
Background and objectives: Organ shortage is considered to be a major limitation for increasing transplantation rates. Brain-dead donors (DBDs) are an important source of organs, but up to 50% of potential DBDs might not be identified. An active brain-dead donor search could potentially increase a deceased donor pool. The aim of this study was to evaluate the effectiveness of an active potential DBD identification program and to evaluate one year impact on the potential organ donor pool in Lithuania‘s biggest medical institution. Materials and Methods: An organ donor coordinator service was established and active DBD search strategy was implemented in the hospital of LSMU Kauno Klinikos, and retrospective data analysis was performed between December 2016 and December 2017. Collected data was compared to the available data of the previous year in the same center and to the donation dynamics of the whole country. Results: A total of 6734 patients were treated in all intensive care units (ICU), and 234 (3.5%) of them were identified as possible donors. No increase in potential donor’s number was observed in study year (n = 34) compared to remote year (n = 37). No significant difference in potential donor’s demographic data, cause of death, family refusals and medical contraindication rates. Cerebral angiography (CA) repeated in 20% of potential donors in order to confirm brain death diagnosis. More potential donors for whom CA was repeated had decompressive craniectomy done (66.7% vs. 33.3%, p = 0.018). Decompressive craniectomy statistically significantly increases the rate of repeated CA (OR 12.7; 95% CI, 1.42–113.37; p = 0.023). Active search strategy increased length of hospital stay of potential donors comparing to previous year (3.97 ± 4.73 vs. 2.51 ± 2.63, p = 0.003). An optimal time of the first four days of hospitalization to identify a potential donor was observed during our study (OR 10.42; 95% CI, 4.29–25.34; p = 0.001). Conclusions: We were not able to demonstrate active donor identification strategy superiority over the passive strategy during a short one year period; nevertheless, valuable knowledge was gained in brain death diagnostics, new terminology was implemented, and the stability of actual donor numbers was observed in the experimental donor center in the light of decreasing national results. Long-term strategy is required to achieve sustainable results in organ donation.
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16
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Improved Outcomes for Liver Transplantation in Patients with Biliary Atresia Since Pediatric End-Stage Liver Disease Implementation: Analysis of the Society of Pediatric Liver Transplantation Registry. J Pediatr 2020; 219:89-97. [PMID: 32005543 DOI: 10.1016/j.jpeds.2019.12.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/14/2019] [Accepted: 12/12/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To identify changes in demographics, outcomes, and risk factors for patient and graft loss in patients with biliary atresia undergoing liver transplantation since Pediatric End-Stage Liver Disease implementation (2002). STUDY DESIGN Demographics and outcomes were compared between patients enrolled in the Society of Pediatric Liver Transplantation registry before (n = 547) and after (n = 1477) 2002. Kruskal-and χ2 Wallis tests identified significant differences between eras. Risk factors for patient and graft loss after 2002 were determined by Cox regression model analysis of time to event data. RESULTS Significant patient differences after 2002 support increasing disease severity including more status 1 patients and those with a derived Model for End-Stage Liver Disease/Pediatric End-Stage Liver Disease score of greater than 30 awaiting transplant. Both patient and graft survival improved after 2002 from 90% to 97% and 81% to 90%, respectively (primary transplant; P < .0001). Significant differences in complications within 30 days included reduced relisting for transplant, rejection, culture-positive infection, repeat operation, hepatic artery thrombosis, portal vein thrombosis, and death/transplant before discharge. Multivariable analysis identified deceased technical variant vs whole graft and retransplantation predictive for patient death, hazard ratios of 4.041 and 8.308, respectively. Deceased technical variant vs whole graft (hazard ratio, 1.963) and donor age 0-5 months vs 1-17 years (hazard ratio, 5.525) were risk factors for graft loss. CONCLUSIONS The overall outcomes of patients receiving liver transplantation for patients with biliary atresia have improved since 2002 despite evidence of increased disease severity at the time of transplant. Risk factors impacting post-transplant morbidity and mortality in patients with biliary atresia are now mainly surgical including donor variables.
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18
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Bobbert M, Primc N, Schäfer RN. Is there an ethical obligation to split every donor liver? Scarce resources, medical factors, and ethical reasoning. Pediatr Transplant 2019; 23:e13534. [PMID: 31297945 DOI: 10.1111/petr.13534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 06/07/2019] [Accepted: 06/07/2019] [Indexed: 12/21/2022]
Abstract
SLT has the potential to counter the worldwide shortage of donor organs. Although the preferred recipients of SLT are usually pediatric patients, a more stringent ethical argument than the fundamental prioritization of children is to demonstrate that SLT of deceased donor organs could increase access to this potentially lifesaving resource for all patients, including children. Several empirical studies show that SLT also makes it possible to achieve similar outcomes to WLT in adults if several factors are observed. In general, it can be regarded as ethically permissible to insist on splitting a donor liver if, in an individual case, SLT is expected to have a similar outcome to that of WLT. The question is therefore no longer whether, but under what conditions SLT is able to achieve similar results to WLT. One of the main challenges of the current debate is the restricted comparability of the available data. We therefore have an ethical obligation to improve the available empirical data by implementing prospective clinical studies, SLT programs, and national registries. The introduction of 2 modes of allocation-one for patients willing to accept both SLT and WLT, and a second for patients only willing to accept WLT-would help to resolve the issue of patient autonomy in the case of mandatory splitting policy.
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Affiliation(s)
- Monika Bobbert
- Seminary of Moral Theology, Department of Theology, University of Münster, Munster, Germany
| | - Nadia Primc
- Institute of History and Ethics of Medicine, Heidelberg University, Heidelberg, Germany
| | - Rebecca N Schäfer
- Department of Neonatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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19
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Cahalane AM, Mojtahed A, Sahani DV, Elias N, Kambadakone AR. Pre-hepatic and pre-pancreatic transplant donor evaluation. Cardiovasc Diagn Ther 2019; 9:S97-S115. [PMID: 31559157 DOI: 10.21037/cdt.2018.09.14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Innovations in surgical techniques coupled with advances in medical and pharmacological management in the past few decades have enabled organ transplantation to become integral to the management of end stage organ failure. In this review article, we will review the role of the radiologist in the work up of liver and pancreas donors during evaluation of their donor candidacy. The critical role of imaging in assessing the parenchymal, biliary and vascular anatomy in liver donor candidates will be reviewed, as well as highlighting the anatomical findings that may pose a contraindication to transplantation. The limited role of imaging in pancreas donor evaluation is also covered, as well as a brief overview of the surgical techniques available and how the radiologist's findings influence operative technique selection.
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Affiliation(s)
- Alexis M Cahalane
- Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Amirkasra Mojtahed
- Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Dushyant V Sahani
- Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Nahel Elias
- Division of Transplant Surgery, Department of Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Avinash R Kambadakone
- Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
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20
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Zhang ZB, Gao W, Liu L, Shi Y, Ma N, Huai MS, Shen ZY. Normothermic Machine Perfusion Protects Against Liver Ischemia-Reperfusion Injury During Reduced-Size Liver Transplantation in Pigs. Ann Transplant 2019; 24:9-17. [PMID: 30607000 PMCID: PMC6338011 DOI: 10.12659/aot.910774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Normothermic machine perfusion (NMP) preservation is superior to cold preservation during reduced-size liver transplantation (RSLT) in pigs. However, the mechanism of this protective effect has not been explained. We aimed to compare the effects of NMP preservation with that of cold preservation (CS) in protecting against ischemia-reperfusion injury (IRI) during RSLT in pigs. Material/Methods Twenty-four healthy Bama miniature pigs were randomized into 2 groups: 1) the NMP group in which donor livers harvested without warm ischemia time and cardiac activity were connected to the NMP system to reduce liver size under normothermic conditions, and 2) the CS group in which donor livers harvested without warm ischemia time and cardiac activity were perfused using the University of Wisconsin (UW) solution and then preserved in the 0–4°C UW solution to reduce liver size under cold conditions. Livers were then transplanted without veno-venous bypass. Amounts of bile secretion for the NMP groups were recorded hourly. The serological indices were measured. Expressions of cytochrome C, caspase 3, and NF-κB p65 in liver tissue were observed. Results The levels of bile secretions were gradually diminished from 16.50±2.66 mL/h before splitting to 6.35±1.24 mL/h after splitting. With the exception of TNF-α on postoperative day 2, overall, levels of TNF-α, IL-1, IL-6, and MDA were significantly lower in the NMP group versus CS group for all 5 days postoperatively. Finally, cytochrome C, caspase 3, and NF-κB p65 expressions were all significantly suppressed in the NMP group as compared with the CS group. Conclusions MP preservation is superior to cold preservation in protecting against liver IRI during RSLT in pigs.
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Affiliation(s)
- Zhi-Bin Zhang
- Department of General Surgery, Tianjin First Central Hospital, Tianjin, China (mainland)
| | - Wei Gao
- Department of Transplantation Surgery, Tianjin First Central Hospital, Tianjin Clinical Research Center for Organ Transplantation, Tianjin, China (mainland)
| | - Lei Liu
- Department of Transplantation Surgery, Tianjin First Central Hospital, Key Laboratory of Organ Transplant of Tianjin, Tianjin, China (mainland)
| | - Yuan Shi
- Department of Transplantation Surgery, Tianjin First Central Hospital, Tianjin Clinical Research Center for Organ Transplantation, Tianjin, China (mainland)
| | - Ning Ma
- Department of Transplantation Surgery, Tianjin First Central Hospital, Tianjin Clinical Research Center for Organ Transplantation, Tianjin, China (mainland)
| | - Ming-Sheng Huai
- Department of Transplantation Surgery, Tianjin First Central Hospital, Tianjin Clinical Research Center for Organ Transplantation, Tianjin, China (mainland)
| | - Zhong-Yang Shen
- Department of Transplantation Surgery, Tianjin First Central Hospital, Tianjin Clinical Research Center for Organ Transplantation, Tianjin, China (mainland)
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21
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Domino Hepatocyte Transplantation: A Therapeutic Alternative for the Treatment of Acute Liver Failure. Can J Gastroenterol Hepatol 2018; 2018:2593745. [PMID: 30065914 PMCID: PMC6051327 DOI: 10.1155/2018/2593745] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/25/2018] [Accepted: 05/31/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND AIMS Acute liver failure (ALF) is a severe syndrome with an elevated mortality rate, ranging from 40 to 80 %. Currently, liver transplantation is the only definitive treatment for these patients and new therapies aiming to treat ALF include artificial organs implant and stem cells therapy, for example. However, a major limitation of liver donors exists. Living donor liver transplantation (LDLT), split liver transplantation (SLT), and domino liver transplantation (DLT) are some of the available alternatives to treat ALF patients, but these do not reduce the number of patients on waiting lists. Herein, we discuss domino hepatocyte transplantation (DHT) using livers that would not meet transplantation criteria. METHODS We conducted a literature search on PubMed/Medline using acute liver failure, liver transplantation, hepatocyte transplantation, and domino liver transplantation as key words. RESULTS New sources of biochemically functional hepatocytes and therapeutic treatments, in parallel to organ transplantation, may improve liver injury recovery and decrease mortality rates. Moreover, the literature reports hepatocyte transplantation as a therapeutic alternative for organ shortage. However, a major challenge remains for a wide clinical application of hepatocytes therapy, i.e., the availability of sufficient amounts of cells for transplantation. Ideally, hepatocytes isolated from livers rejected for transplantation may be a promising alternative for this problem. CONCLUSION Our review suggests that DHT may be an excellent strategy to increase cell supplies for hepatocyte transplantation.
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22
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Memeo R, de'Angelis N, Salloum C, Compagnon P, Laurent A, Feray C, Duvoux C, Azoulay D. Clinical outcomes of right-lobe split-liver versus orthotopic liver transplants from donors more than 70 years old. Prog Transplant 2018; 25:243-50. [PMID: 26308784 DOI: 10.7182/pit2015303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Context-The imbalance between the organ supply and the number of potential transplant recipients led to consideration of expanded-criteria liver donors. Objective-To compare right-lobe split-liver transplants (RL-SLTs) with orthotopic liver transplants (OLTs) from donors more than 70 years old (OLT-O) and OLTs from donors less than 55 years old (OLT-Y). Methods-Seventy-one patients who received an RL-SLT were matched for age, sex, and Model for End-stage Liver Disease score with 71 patients who underwent OLT-O and 142 patients who underwent OLT-Y. Clinical outcomes were compared between groups. Results-Longer operation time was associated with RL-SLT (P< .001) as well as more blood loss (P= .03) and transfusions (P= .05). Postoperative morbidity was less in the OLT-Y group, with a lower rate of grades III to IV Clavien-Dindo complication (30%), compared with values in OLT-O (52%) and RL-SLT (38%). Kaplan-Meier analysis demonstrated better 1-year and 3-year survival rates in the OLT-Y group (97% and 92%, respectively), compared with 92% and 86.3%, respectively, in the RL-SLT group; and 84.5% and 73%, respectively, in the OLT-O group (P = .03). Kaplan-Meier analysis also demonstrated differences between the groups in terms of 1-year and 3-year graft survival rates, which were 92% and 86%, respectively, in OLT-Y; 77% and 66%, respectively, in the OLT-O, and 84.2% and 76.6%, respectively, in the RL-SLT group (P= .01). Conclusion-Even if OLT-Y guarantees better patient and graft survival, both RL-SLT and OLT-O can be used safely to expand the pool of liver donors, showing acceptable clinical results and complications rates.
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Affiliation(s)
- Riccardo Memeo
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Nicola de'Angelis
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Chady Salloum
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Philipe Compagnon
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Alexis Laurent
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Cyrille Feray
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Cristoph Duvoux
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
| | - Daniel Azoulay
- Hospital Henri-Mondor, Université de Paris Est-Creteil, Paris, France
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23
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An Empirically Informed Analysis of the Ethical Issues Surrounding Split Liver Transplantation in the United Kingdom. Camb Q Healthc Ethics 2018; 25:435-47. [PMID: 27348828 PMCID: PMC5355900 DOI: 10.1017/s0963180116000086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Surgical advances have allowed for the development of split liver transplantation, providing two recipients with the opportunity to potentially benefit from one donated liver by splitting the liver into two usable parts. Although current data suggest that the splitting of livers provides overall benefit to the liver-recipient population, relatively low numbers of livers are actually split in the United Kingdom. This article addresses the question of whether ethical concerns are posing an unnecessary barrier to further increasing the number of life-saving transplantations. Recognizing that an important aspect of exploring these concerns is gaining insight into how transplant staff and patients regard splitting livers, the article presents the findings of a qualitative study examining the views of senior transplant staff and liver transplant patients in the UK and uses these to inform a commentary on the ethical issues relating to split liver transplantation.
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24
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Elsabbagh AM, Williams C, Girlanda R, Hawksworth J, Kroemer A, Matsumoto CS, Fishbein TM. The impact of intercenter sharing on the outcomes of pediatric split liver transplantation. Clin Transplant 2017; 31. [PMID: 29032604 DOI: 10.1111/ctr.13138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Split liver transplantation allows for expansion of the pool of organs available for pediatric liver transplantation. The impact of sharing segments of the same liver between centers has not been studied. STUDY DESIGN Retrospective analysis of 24 pediatric split liver transplant cases in a recent cohort. We evaluated the outcomes of pediatric recipients who shared organs with adult patients in our own center (group A) compared to recipients who shared organs with adult patients in other centers. (group B). RESULTS One-, 3-, and 5-year graft survival for group A was 100%, 100%, and 100% vs 83%, 71%, and 57% for group B (P = .039). Postoperative complications included biliary complications (41.7% in group A vs 50% in group B, P = .682), vascular complications (8.3% in group A vs 41.7% in group B, P = .059), and postoperative bleeding (16.7% in group A vs 25% in group B, P = .615). High-grade Clavien-Dindo complications were 0% in group A vs 33.3% in group B, P = .028. CONCLUSIONS Organ sharing between centers appears to be associated with significantly poorer graft survival. Possible explanations include greater procurement-related injury or suboptimal vessel distribution. Future larger studies focused on this area may be helpful to formulate policy considerations.
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Affiliation(s)
- Ahmed M Elsabbagh
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Cassie Williams
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Raffaele Girlanda
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Jason Hawksworth
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Alexander Kroemer
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Cal S Matsumoto
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
| | - Thomas M Fishbein
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, United States
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25
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Vicentine FPP, Gonzalez AM, Beninni BB, Azevedo RAD, Linhares MM, Goldenberg A, Lopes GDJ, Martins JL, Salzedas AA. Use of fibrinogen and thrombin sponge in pediatric split liver transplantation. Acta Cir Bras 2017; 32:673-679. [PMID: 28902943 DOI: 10.1590/s0102-865020170080000009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 07/18/2017] [Indexed: 12/24/2022] Open
Abstract
Purpose: To analyze the use of this sponge in pediatric patients undergoing split-liver transplantation. Methods: Retrospective study, including 35 pediatric patients undergoing split-liver transplantation, divided into two groups according to the use of the sponge: 18 patients in Group A (no sponge) and 17 in Group B (with sponge). Results: The characteristics of recipients and donors were similar. We observed greater number of reoperation due to bleeding in the wound area in Group A (10 patients - 55.5%) than in Group B (3 patients - 17.6%); p = 0.035. The median volume of red blood cells transfused in Group A was significantly higher (73.4 ± 102.38 mL/kg) than that in Group B (35.1 ± 41.67 mL/kg); p = 0.048. Regarding bile leak there was no statistical difference. Conclusion: The use of the human fibrinogen and thrombin sponge, required lower volume of red blood cell transfusion and presented lower reoperation rates due to bleeding in the wound area.
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Affiliation(s)
- Fernando Pompeu Piza Vicentine
- Fellow PhD degree, Postgraduate Program in Interdisciplinary Surgical Sciences, Universidade Federal de São Paulo (UNIFESP), Brazil. Conception and design of the study; acquisition, analysis and interpretation of data; statistics analysis; final approval of the version to be published
| | - Adriano Miziara Gonzalez
- PhD, Associate Professor, Division of Surgical Gastroenterology, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study; acquisition, analysis and interpretation of data; drafting the article; technical procedures, final approval of the version to be published
| | - Barbara Burza Beninni
- Associate Professor, Division of Surgical Gastroenterology, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Intellectual content of the study; acquisition, analysis and interpretation of data
| | - Ramiro Anthero de Azevedo
- PhD, Associate Professor, Division of Pediatric Surgery, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study, analysis and interpretation of data, final approval of the version to be published
| | - Marcelo Moura Linhares
- PhD, Associate Professor, Division of Surgical Gastroenterology, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study; acquisition, analysis and interpretation of data; drafting the article; technical procedures, final approval of the version to be published
| | - Alberto Goldenberg
- PhD, Chairman, Division of Surgical Gastroenterology, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Intellectual content of the study, final approval of the version to be published
| | - Gaspar de Jesus Lopes
- PhD, Chairman, Division of Surgical Gastroenterology, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Intellectual content of the study, final approval of the version to be published
| | - Jose Luiz Martins
- PhD, Associate Professor, Division of Pediatric Surgery, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study, analysis and interpretation of data, final approval of the version to be published
| | - Alcides Augusto Salzedas
- PhD, Associate Professor, Division of Pediatric Surgery, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study, analysis and interpretation of data, final approval of the version to be published
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Patel SH, Camargo FD, Yimlamai D. Hippo Signaling in the Liver Regulates Organ Size, Cell Fate, and Carcinogenesis. Gastroenterology 2017; 152:533-545. [PMID: 28003097 PMCID: PMC5285449 DOI: 10.1053/j.gastro.2016.10.047] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 10/11/2016] [Accepted: 10/18/2016] [Indexed: 02/08/2023]
Abstract
The Hippo signaling pathway, also known as the Salvador-Warts-Hippo pathway, is a regulator of organ size. The pathway takes its name from the Drosophila protein kinase, Hippo (STK4/MST1 and STK3/MST2 in mammals), which, when inactivated, leads to considerable tissue overgrowth. In mammals, MST1 and MST2 negatively regulate the transcriptional co-activators yes-associated protein 1 and WW domain containing transcription regulator 1 (WWTR1/TAZ), which together regulate expression of genes that control proliferation, survival, and differentiation. Yes-associated protein 1 and TAZ activation have been associated with liver development, regeneration, and tumorigenesis. How their activity is dynamically regulated in these contexts is just beginning to be elucidated. We review the mechanisms of Hippo signaling in the liver and explore outstanding questions for future research.
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Affiliation(s)
- Sachin H Patel
- The Stem Cell Program, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts
| | - Fernando D Camargo
- The Stem Cell Program, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts; Harvard Stem Cell Institute, Cambridge, Massachusetts; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts
| | - Dean Yimlamai
- The Stem Cell Program, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts; Division of Gastroenterology and Nutrition, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts.
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Reichman TW, Fiorello B, Carmody I, Bohorquez H, Cohen A, Seal J, Bruce D, Loss GE. Using on-site liver 3-D reconstruction and volumetric calculations in split liver transplantation. Hepatobiliary Pancreat Dis Int 2016; 15:587-592. [PMID: 27919847 DOI: 10.1016/s1499-3872(16)60155-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Split liver transplantation increases the number of grafts available for transplantation. Pre-recovery assessment of liver graft volume is essential for selecting suitable recipients. The purpose of this study was to determine the ability and feasibility of constructing a 3-D model to aid in surgical planning and to predict graft weight prior to an in situ division of the donor liver. METHODS Over 11 months, 3-D volumetric reconstruction of 4 deceased donors was performed using Pathfinder Scout© liver volumetric software. Demographic, laboratory, operative, perioperative and survival data for these patients along with donor demographic data were collected prospectively and analyzed retrospectively. RESULTS The average predicted weight of the grafts from the adult donors obtained from an in situ split procedure were 1130 g (930-1458 g) for the extended right lobe donors and 312 g (222-396 g) for left lateral segment grafts. Actual adult graft weight was 92% of the predicted weight for both the extended right grafts and the left lateral segment grafts. The predicted and actual graft weights for the pediatric donors were 176 g and 210 g for the left lateral segment grafts and 308 g and 280 g for the extended right lobe grafts, respectively. All grafts were transplanted except for the right lobe from the pediatric donors due to the small graft weight. CONCLUSIONS On-site volumetric assessment of donors provides useful information for the planning of an in situ split and for selection of recipients. This information may expand the donor pool to recipients previously felt to be unsuitable due to donor and/or recipient weight.
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Affiliation(s)
- Trevor W Reichman
- Ochsner Multi-Organ Transplant Institute, Ochsner Medical Center, 1514 Jefferson Highway, New Orleans, LA 70121, USA.
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28
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Schukfeh N, Holland AC, Hoyer DP, Gallinat A, Paul A, Schulze M. Liver transplantation in infants with biliary atresia: comparison of primary versus temporary abdominal closure. Langenbecks Arch Surg 2016; 402:135-141. [DOI: 10.1007/s00423-016-1525-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 10/09/2016] [Indexed: 02/07/2023]
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29
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Matsumoto R, Uchida K, Nishida S, Island E, Levi D, Fan J, Tekin A, Selvaggi G, Tzakis A. Extra-anatomical Meso-portal Venous Jump Graft Repair for Early Portal Vein Thrombosis After Liver Transplant in an Infant With a Hypoplastic Portal Vein: A Case Report. Transplant Proc 2016; 48:3186-3190. [DOI: 10.1016/j.transproceed.2016.08.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 07/29/2016] [Accepted: 08/22/2016] [Indexed: 01/10/2023]
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30
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Hashimoto K, Fujiki M, Quintini C, Aucejo FN, Uso TD, Kelly DM, Eghtesad B, Fung JJ, Miller CM. Split liver transplantation in adults. World J Gastroenterol 2016; 22:7500-7506. [PMID: 27672272 PMCID: PMC5011665 DOI: 10.3748/wjg.v22.i33.7500] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/30/2016] [Accepted: 06/29/2016] [Indexed: 02/06/2023] Open
Abstract
Split liver transplantation (SLT), while widely accepted in pediatrics, remains underutilized in adults. Advancements in surgical techniques and donor-recipient matching, however, have allowed expansion of SLT from utilization of the right trisegment graft to now include use of the hemiliver graft as well. Despite less favorable outcomes in the early experience, better outcomes have been reported by experienced centers and have further validated the feasibility of SLT. Importantly, more than two decades of experience have identified key requirements for successful SLT in adults. When these requirements are met, SLT can achieve outcomes equivalent to those achieved with other types of liver transplantation for adults. However, substantial challenges, such as surgical techniques, logistics, and ethics, persist as ongoing barriers to further expansion of this highly complex procedure. This review outlines the current state of SLT in adults, focusing on donor and recipient selection based on physiology, surgical techniques, surgical outcomes, and ethical issues.
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31
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Zhang ZB, Gao W, Shi Y, Liu L, Ma N, Chen J, Zhu ZJ. Protective role of normothermic machine perfusion during reduced-size liver transplantation in pigs. Liver Transpl 2016; 22:968-78. [PMID: 27037634 DOI: 10.1002/lt.24453] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 03/21/2016] [Indexed: 01/01/2023]
Abstract
The purpose of this study is to explore whether normothermic machine perfusion (NMP) preservation is superior to cold preservation during reduced-size liver transplantation (RSLT) in pigs. Twenty-four healthy Ba-Ma mini pigs were used (aged >13 months; weight 25-35 kg; regardless of sex). The animals were randomized into 2 groups. In group A (NMP), donor livers were harvested without warm ischemia time and heartbeats and then were connected to the NMP system to reduce the livers' size under the normothermic condition. In group B (University of Wisconsin [UW] solution), donor livers were harvested without warm ischemia time and heartbeats after being perfused by UW solution and were then preserved in 0°C-4°C UW solution to reduce the livers' size under cold conditions. After that, liver transplantation without venovenous bypass was performed. General RSLT information of the pigs from the 2 groups was recorded; the serological indices were measured; and routine pathological examination of liver tissue was observed. A significant difference was observed in the intraoperative bleeding between the 2 groups (P < 0.05), whereas no significant difference was found in the other indices (all P > 0.05). Significant differences of alanine aminotransferase levels, aspartate aminotransferase levels, and lactate dehydrogenase levels between the 2 groups were observed between postoperative days 3 and 5 (P < 0.05). Significant differences of lactic acid levels between the 2 groups were observed between postoperative days 2 and 5 (P < 0.05). Compared with the cold preservation group, the liver tissues of the NMP preservation group only rarely experienced liver cell necrosis and maintained integrities in the hepatic sinusoid spaces and endothelial cells. In conclusion, NMP preservation is superior to cold preservation during RSLT in pigs. Liver Transplantation 22 968-978 2016 AASLD.
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Affiliation(s)
- Zhi-Bin Zhang
- Departments of General Surgery, Tianjin First Central Hospital, Tianjin, China
| | - Wei Gao
- Transplantation Surgery, Tianjin First Central Hospital, Tianjin, China
| | - Yuan Shi
- Hepatopancreatobiliary Surgery, Tianjin First Central Hospital, Tianjin, China
| | - Lei Liu
- Transplantation Surgery, Tianjin First Central Hospital, Tianjin, China.,Tianjin Key Laboratory of Organ Transplantation, Tianjin, China
| | - Ning Ma
- Transplantation Surgery, Tianjin First Central Hospital, Tianjin, China.,Tianjin Key Laboratory of Organ Transplantation, Tianjin, China
| | - Jing Chen
- Tianjin Key Laboratory of Organ Transplantation, Tianjin, China
| | - Zhi-Jun Zhu
- Department of Transplantation Surgery, Beijing Friendship Hospital, Beijing, China
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Sakamoto S, Kasahara M, Ogura Y, Inomata Y, Uemoto S. Current status of deceased donor split liver transplantation in Japan. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2015; 22:837-45. [DOI: 10.1002/jhbp.292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/14/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Seisuke Sakamoto
- Department of Transplantation/Pediatric Surgery; Kumamoto University; 1-1-1 Honjo Chuo-ku Kumamoto 862-8556 Japan
- Transplantation Center; National Center for Child Health and Development; Tokyo Japan
| | - Mureo Kasahara
- Transplantation Center; National Center for Child Health and Development; Tokyo Japan
| | - Yasuhiro Ogura
- Department of Transplant Surgery; Nagoya University; Nagoya Japan
| | - Yukihiro Inomata
- Department of Transplantation/Pediatric Surgery; Kumamoto University; 1-1-1 Honjo Chuo-ku Kumamoto 862-8556 Japan
| | - Shinji Uemoto
- Department of Surgery; Kyoto University; Kyoto Japan
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Lauterio A, Di Sandro S, Concone G, De Carlis R, Giacomoni A, De Carlis L. Current status and perspectives in split liver transplantation. World J Gastroenterol 2015; 21:11003-15. [PMID: 26494957 PMCID: PMC4607900 DOI: 10.3748/wjg.v21.i39.11003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 06/27/2015] [Accepted: 08/30/2015] [Indexed: 02/06/2023] Open
Abstract
Growing experience with the liver splitting technique and favorable results equivalent to those of whole liver transplant have led to wider application of split liver transplantation (SLT) for adult and pediatric recipients in the last decade. Conversely, SLT for two adult recipients remains a challenging surgical procedure and outcomes have yet to improve. Differences in organ shortages together with religious and ethical issues related to cadaveric organ donation have had an impact on the worldwide distribution of SLT. Despite technical refinements and a better understanding of the complex liver anatomy, SLT remains a technically and logistically demanding surgical procedure. This article reviews the surgical and clinical advances in this field of liver transplantation focusing on the role of SLT and the issues that may lead a further expansion of this complex surgical procedure.
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34
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Dalal AR. Split liver transplantation: What’s unique? World J Transplant 2015; 5:89-94. [PMID: 26421261 PMCID: PMC4580931 DOI: 10.5500/wjt.v5.i3.89] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 12/26/2014] [Accepted: 06/19/2015] [Indexed: 02/05/2023] Open
Abstract
The intraoperative management of split liver transplantation (SLT) has some unique features as compared to routine whole liver transplantations. Only the liver has this special ability to regenerate that confers benefits in survival and quality of life for two instead of one by splitting livers. Primary graft dysfunction may result from small for size syndrome. Graft weight to recipient body weight ratio is significant for both trisegmental and hemiliver grafts. Intraoperative surgical techniques aim to reduce portal hyperperfusion and decrease venous portal pressure. Ischemic preconditioning can be instituted to protect against ischemic reperfusion injury which impacts graft regeneration. Advancement of the technique of SLT is essential as use of split cadaveric grafts expands the donor pool and potentially has an excellent future.
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35
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Moorlock G, Neuberger J, Draper H. Split liver transplantation: Papering over the cracks of the organ shortage. CLINICAL ETHICS 2015; 10:83-89. [DOI: 10.1177/1477750915599703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Splitting livers allows two people (usually an adult and a child) to receive a liver transplant from one donated adult liver, but the risks to the adult recipient are greater than if they had received the equivalent whole liver. It has been suggested, therefore, that splitting livers harms adult recipients. Without liver splitting, however, there would be few livers available for children, and paediatric waiting time and waiting list mortality would significantly increase. In this paper, we argue that although splitting livers makes adults worse off, this should be considered sub-optimal benefit rather than harm. We explore justifications for sub-optimally benefitting adults in this way and consider alternatives to the current approach. We argue that splitting livers masks the more fundamental problem of low paediatric donation rates and that increasing the number of paediatric donations would improve the situation for both adult and paediatric liver patients.
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Affiliation(s)
- Greg Moorlock
- Institute of Applied Health Research, University of Birmingham, UK
| | | | - Heather Draper
- Institute of Applied Health Research, University of Birmingham, UK
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36
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Schrem H, Kleine M, Lankisch TO, Kaltenborn A, Kousoulas L, Zachau L, Lehner F, Klempnauer J. Long-term results after adult ex situ split liver transplantation since its introduction in 1987. World J Surg 2015; 38:1795-806. [PMID: 24414197 PMCID: PMC7102172 DOI: 10.1007/s00268-013-2444-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Split liver transplantation is still discussed controversially. Utilization of split liver grafts has been declining since a change of allocation rules for the second graft abolished incentives for German centres to perform ex situ splits. We therefore analysed our long-term experiences with the first ex situ split liver transplant series worldwide. METHODS A total of 131 consecutive adult ex situ split liver transplants (01.12.1987-31.12.2010) were analysed retrospectively. RESULTS Thirty-day mortality rates and 1- and 3-year patient survival rates were 13, 76.3, and 66.4 %, respectively. One- and three-year graft survival rates were 63.4 and 54.2 %, respectively. The observed 10-year survival rate was 40.6 %. Continuous improvement of survival from era 1 to 3 was observed (each era: 8 years), indicating a learning curve over 24 years of experience. Patient and graft survival were not influenced by different combinations of transplanted segments or types of biliary reconstruction (p > 0.05; Cox regression). Patients transplanted for primary sclerosing cholangitis had better survival (p = 0.021; log-rank), whereas all other indications including acute liver failure (13.6 %), acute and chronic graft failure (9.1 %) had no significant influence on survival (p > 0.05; log-rank). Biliary complications (27.4 %) had no significant influence on patient or graft survival (p > 0.05; log-rank). Hepatic artery thrombosis (13.2 %) had a significant influence on graft survival but not on patient survival (p = 0.002, >0.05, respectively; log-rank). CONCLUSIONS Split liver transplantation can be used safely and appears to be an underutilized resource that may benefit from liberal allocation of the second graft.
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Affiliation(s)
- Harald Schrem
- Department of General, Visceral and Transplantation Surgery, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Germany,
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37
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Maggi U, De Feo TM, Andorno E, Cillo U, De Carlis L, Colledan M, Burra P, De Fazio N, Rossi G. Fifteen years and 382 extended right grafts from in situ split livers in a multicenter study: Are these still extended criteria liver grafts? Liver Transpl 2015; 21:500-11. [PMID: 25545700 DOI: 10.1002/lt.24070] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/02/2014] [Accepted: 12/14/2014] [Indexed: 12/13/2022]
Abstract
In situ split liver extended right grafts (SL-ERGs) are still considered marginal grafts. Our aim was to verify this statement at the present time. From 1997 to 2011, a multicenter, retrospective study based on a prospective database was performed at 9 liver transplantation (LT) centers in northern Italy; it included 382 in situ SL-ERG transplants in adults. There were 358 primary LTs and 24 retransplantations (RETXs). The 1-, 3-, and 5-year overall graft survival rate for LT with in situ SL-ERGs were 73.5%, 63.3%, and 60.7%, respectively, from 1997 to 2004 and 83.5%, 80.3%, and 80.3%, respectively, thereafter (P=0.0001). A shorter total ischemia time and fewer RETX grafts were the main differences between the characteristics of the 2 periods. From 1997 to 2011, the 1-, 3-, and 5-year graft survival rates showed a significant difference between the 358 primary LT in situ SL-ERGs and the 24 RETX in situ SL-ERGs (P<0.001). In a multivariate analysis, the main prognostic factor for 60-day graft survival was a total ischemia time<8 hours for the 358 primary in situ SL-ERGs. From 2005 to 2011, in 2473 LTs, the 5-year graft survival for 184 in situ SL-ERGs and 2289 whole grafts was 75% and 80% (P=0.3), respectively. Univariate and multivariate studies alike failed to indicate that the type of graft was a prognostic factor for graft survival. A donor age>60 years, RETX grafts, and urgency were the main prognostic factors for failure for all of the grafts. Although caution should be taken regarding the choice of appropriate donors, in situ SL-ERGs should no longer be considered marginal grafts for experienced LT centers. SL-ERGs should not be used in RETX settings, and when SL-ERGs are used as primary grafts, the total ischemia time should be less than 8 hours.
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Affiliation(s)
- Umberto Maggi
- UO Chirurgia Generale e Trapianti di Fegato, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy; Department of Digestive and Hepatobiliary Surgery, AP-HP, U.F.R. de Médecine de l'Université Paris XII-Créteil, Paris, France
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Teplisky D, Urueña Tincani E, Halac E, Garriga M, Cervio G, Imventarza O, Sierre S. Ultrasonography, laboratory, and cholangiography correlation of biliary complications in pediatric liver transplantation. Pediatr Transplant 2015; 19:170-4. [PMID: 25529070 DOI: 10.1111/petr.12421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/25/2014] [Indexed: 12/26/2022]
Abstract
The aim of this study is to correlate the US, laboratory, and cholangiography findings in pediatric liver transplant patients with biliary complications, trying to identify reliable decision-making tools for the management of these complications. Retrospective review was carried out of US results in 39 consecutive patients, from 2011 to 2013, with biliary complications after LT, documented by PTC. According to US biliary dilation, patients were classified as: mild, moderate, and severe, and according to laboratory findings as: normal or abnormal serum bilirubin and level of serum GGT. Data were correlated with PTC findings, divided in three groups: mild, moderate, and severe/occlusive BDS. There was no statistically significant correlation between the US findings and the laboratory findings and between US findings with PTC. There was a statistically significant correlation between GGT and cholangiography. In our series, abnormal US could not predict the severity of BDS on PTC. Bilirubin results were not able to predict the US findings either. GGT results demonstrated a statistically significant correlation with the severity of BDS found on PTC. These findings emphasize the role of GGT in the evaluation and decision of biliary interventions in pediatric liver transplant recipients.
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Affiliation(s)
- Darío Teplisky
- Department of Interventional Radiology, Hospital Nacional de Pediatría "Prof. J.P. Garrahan", Buenos Aires, Argentina
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A Novel Split Liver Protocol Using the Subnormothermic Oxygenated Circuit System in a Porcine Model of a Marginal Donor Procedure. Transplant Proc 2015; 47:419-26. [DOI: 10.1016/j.transproceed.2014.10.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 10/14/2014] [Accepted: 10/28/2014] [Indexed: 12/13/2022]
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Mabrouk Mourad M, Liossis C, Kumar S, Gunson BK, Mergental H, Isaac J, Bramhall SR, Muiesan P, Mirza DF, Thamara P R Perera M. Vasculobiliary complications following adult right lobe split liver transplantation from the perspective of reconstruction techniques. Liver Transpl 2015; 21:63-71. [PMID: 25302412 DOI: 10.1002/lt.24015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 09/25/2014] [Accepted: 09/29/2014] [Indexed: 12/11/2022]
Abstract
Split liver transplantation (SLT) compensates for the organ shortage and provides an alternative solution for recipients disadvantaged by a smaller body size. Variations in the hepatic arterial anatomy and reconstructive techniques may lead to more technical complications, and we sought to analyze the incidence and risk factors of vasculobiliary complications with respect to reconstructive techniques. We identified 171 adult right lobe SLT procedures and 1412 whole liver transplantation (WLT) procedures between January 2000 and June 2012 and compared the results of these 2 groups. In the SLT group, arterial reconstruction techniques were classified into 4 subgroups (I-IV), and biliary reconstruction was classified into 2 groups [duct-to-duct (DD) anastomosis and Roux-en-Y hepaticojejunostomy (RH)]. Specific surgical complications were analyzed against reconstruction techniques. The overall incidence of vascular and biliary complications in the SLT group was greater than that in the WLT group (P = 0.009 and P = 0.001, respectively). There was no difference in hepatic artery thrombosis (HAT), but we saw a tendency toward early HAT in the presence of multiple hepatic arteries supplying the right lobe graft (group IV; 20%) in comparison with the other arterial reconstruction groups (P = 0.052). No difference was noticed in the overall incidence of biliary complications in either DD or RH recipients across 4 arterial reconstruction groups. When the arterial reconstruction involved a right hepatic artery (groups II and III) combined with a DD biliary anastomosis, there was a significant preponderance of biliary complications (P = 0.04 and P = 0.01, respectively). There was no survival difference between SLT and WLT grafts. In conclusion, the complications of SLT are directly related to arterial and biliary reconstruction techniques, and this classification helps to identify high-risk reconstructive techniques.
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Emre S, Gondolesi GE, Muñoz-Abraham AS, Emre G, Rodriguez-Davalos MI. Pediatric Liver Transplantation: A Surgical Perspective and New Concepts. CURRENT TRANSPLANTATION REPORTS 2014. [DOI: 10.1007/s40472-014-0036-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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42
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Hashimoto K, Quintini C, Aucejo FN, Fujiki M, Diago T, Watson MJ, Kelly DM, Winans CG, Eghtesad B, Fung JJ, Miller CM. Split liver transplantation using Hemiliver graft in the MELD era: a single center experience in the United States. Am J Transplant 2014; 14:2072-80. [PMID: 25040819 DOI: 10.1111/ajt.12791] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 04/08/2014] [Accepted: 04/17/2014] [Indexed: 01/25/2023]
Abstract
Under the "sickest first" Model for End-Stage Liver Disease (MELD) allocation, livers amenable to splitting are most often allocated to patients unsuitable for split liver transplantation (SLT). Our experience with SLT using hemilivers was reviewed. From April 2004 to June 2012, we used 25 lobar grafts (10 left lobes and 15 right lobes) for adult-sized recipients. Twelve recipients were transplanted with primary offers, and 13 were transplanted with leftover grafts. Six grafts were shared with other centers. The data were compared with matched whole liver grafts (n = 121). In 92% of donors, the livers were split in situ. Hemiliver recipients with severe portal hypertension had a greater graft-to-recipient weight ratio than those without severe portal hypertension (1.96% vs. 1.40%, p < 0.05). Hemiliver recipients experienced biliary complications more frequently (32.0% vs. 10.7%, p = 0.01); however, the 5-year graft survival for hemilivers was comparable to whole livers (80.0% vs. 81.5%, p = 0.43). The secondary recipients with leftover grafts did not have increased incidences of graft failure (p = 0.99) or surgical complications (p = 0.43) compared to the primary recipients. In conclusion, while routine application is still controversial due to various challenges, hemiliver SLT can achieve excellent outcomes under the MELD allocation.
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Affiliation(s)
- K Hashimoto
- Department of General Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH
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Liver, pancreas and small bowel transplantation: current ethical issues. Best Pract Res Clin Gastroenterol 2014; 28:281-92. [PMID: 24810189 DOI: 10.1016/j.bpg.2014.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 02/07/2014] [Accepted: 02/21/2014] [Indexed: 01/31/2023]
Abstract
We describe the medical state of the art in liver, pancreas and small bowel transplantation, and portray the ethical issues. Although most ethical questions related to these transplantations are not specific for liver, pancreas and small bowel, they do challenge ethical analysis as well as new policies and clinical procedures. Firstly, outcomes continue to be of utmost concern, as information is only limited available, is developing over time and is surrounded by many uncertainties. Secondly, characteristics of donors and recipients should be carefully evaluated. The question of what qualifies a donor and a recipient should be considered against the background of a quest for extended criteria, embracing marginal cases, and a judgment with regard to what counts as a good enough outcome. Thirdly, ethical principles of autonomy and fairness are pushed, given the circumstance of severe scarcity, towards limits that can easily be crossed.
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Al MI, Abaalkhail FA, Bahili HA, Abdo AH, Elsiesy HA, Al MS, El Sheikh YM, Hegab BS, Kamel YM, AlGoufi TT, Hasssan HH, Burdelski MM, Al MA, Abdelfattah MR, Attallah KM, Mahmood TZ, Saleh YZ, Eldeen FZ, Broering DC. Liver transplantation at KFSHRC: achievement and challenges. Ann Saudi Med 2014; 34:103-6. [PMID: 24894777 PMCID: PMC6074861 DOI: 10.5144/0256-4947.2014.103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The liver transplantation program at KFSHRC has been active since 2001. More than 450 liver transplants have been performed so far. The program evolved from adult cadaveric transplant to living donor and recently to pediatric and split techniques. The 1-year survival of patients for both pediatric and adult exceeded 90% and the 5-year survival of patients is more than 80%. Associated with this success are challenges that include: organ shortage, quality of organ harvested, inability to meet the growing national need, increased demand of resource to meet the need of the program, and lack of a collaborative national strategy in organ donation and transplantation.
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Affiliation(s)
- Mohammed I Al
- Prof. Mohammed Al Sebayel, Department of Liver and Small Bowel Transplantation and Hepatobiliary Surgery,, King Faisal Specialist Hospital and Research Centre, T: +966114424818, F: +966114424817,
| | | | | | | | | | - Mohammed S Al
- Prof. Mohammed Al Sebayel, Department of Liver and Small Bowel Transplantation and Hepatobiliary Surgery,, King Faisal Specialist Hospital and Research Centre, T: +966114424818, F: +966114424817,
| | | | | | | | | | | | | | - Mohammad A Al
- Prof. Mohammed Al Sebayel, Department of Liver and Small Bowel Transplantation and Hepatobiliary Surgery,, King Faisal Specialist Hospital and Research Centre, T: +966114424818, F: +966114424817,
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Sakamoto S, Uchida H, Hamano I, Shigeta T, Sasaki K, Kanazawa H, Fukuda A, Kasahara M. Impact of the current organ allocation system for deceased donor liver transplantation on the outcomes of pediatric recipients: a single center experience in Japan. Pediatr Surg Int 2013; 29:1109-14. [PMID: 23975020 DOI: 10.1007/s00383-013-3381-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
PURPOSE The aim of this study was to analyze the outcomes of children added to the waiting list for deceased donor liver transplantation (DDLT) and the results of DDLT in a single Japanese center. METHODS Forty-seven children were listed on the organ allocation system for DDLT. The priority points related to the medical status of each patient were evaluated and stratified into four categories; 10, 8, 6, and 3 points. The clinical data were collected from the medical records, and the outcomes were analyzed. RESULTS There were 10 priority points in 25 patients, 6 points in 13 and 3 points in 9. Ten recipients (21.3 %); 7 patients with 10 points and 3 patients with 6 points, underwent DDLT. Seven out of the 10 recipients received split/reduced liver grafts. The surgical complications consisted of biliary stricture, hepatic venous outflow obstruction, intraabdominal abscess and intraabdominal bleeding. Two recipients, who were critically-ill before DDLT, died due to sepsis. The one-year graft survival rate was 70.0 %, with a median follow-up period of 6.4 months. CONCLUSION The initial experience with pediatric DDLT in our series was satisfactory. Split LT of deceased donor organs may have the potential to resolve the serious organ shortage in Japan.
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Affiliation(s)
- Seisuke Sakamoto
- Division of Transplant Surgery, National Center for Child Health and Development, 2-10-1 Okura, Setagaya, Tokyo, 157-8535, Japan,
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Outcomes with Split Liver Transplantation Are Equivalent to Those with Whole Organ Transplantation. J Am Coll Surg 2013; 217:102-12; discussion 113-4. [DOI: 10.1016/j.jamcollsurg.2013.03.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 03/05/2013] [Accepted: 03/06/2013] [Indexed: 02/06/2023]
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Zhou J, Wang Z, Li L, Chen FL, Cui L, Xie HW, Hou WY, Zhang JS, Liu SL, Ming AX, Li SL, Wang HB. An experimental study of triple split-liver transplantation in dogs. Shijie Huaren Xiaohua Zazhi 2012; 20:2138-2145. [DOI: 10.11569/wcjd.v20.i23.2138] [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] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the feasibility of a strategy of tripartition of a whole deceased liver graft for use in 3 recipients in dogs to ultimately maximize donor organ use.
METHODS: Adult healthy mongrel dogs were selected to be donors (n = 30, weighing between 20-25 kg) and recipients (n = 30, weighing between 8-15 kg). Donor/recipient pairs were randomly matched. For donor operation, transection of the parenchymal bridge was performed between the right lateral lobe and right middle lobe, and between the left middle lobe and the quadrate lobe. After in vivo perfusion, the left, middle and right liver grafts were procured, and their primary branches were cut near the main stem. Among the three liver grafts, the one was chosen to be implanted if it's GRWR (graft-to-recipient weight ratio) was more than 1.0% and was nearest to 1.5%. Recipients entered Groups A, B and C if the left, middle and right grafts were chosen, respectively. With the piggyback technique, the outflow orifice of liver graft was anastomosed to the anterolateral wall of the recipient vena cava. The graft was revascularized via reconstructed hepatic vein and portal vein, and then the hepatic artery and bile duct were anastomosed both in an end-to-end manner. Biliary and abdominal drainage was inspected postoperatively. Autopsies were performed promptly after recipients' death to investigate the possibility of technical complications.
RESULTS: By prominent fissures, the canine liver was divided into 7 lobes, among which the parenchymal bridges were thin. The parenchymal bridge connecting the right lateral lobe to the right middle lobe was much thinner than that connecting the left middle lobe to the quadrate lobe. No major conduit was found during transection of these two parenchymal bridges. The portal vein was split into three branches. The common bile duct was formed by the union of three hepatic ducts-the left, middle and right hepatic ducts. The hepatic vein consisted of the left, median and right hepatic veins. Anatomical variations in the hepatic arteries could be found. Among three recipient groups, the operation time, anhepatic time and blood loss did not show significant differences (P > 0.05), but the mean recipient weight, liver graft weight, and GRWR differed significantly (all P < 0.01). In the three groups, none of the recipients died during surgery. Once the hepatic vein and the portal vein were anastomosed and declamped, the implanted liver regained its color soon and its appearance returned to normal following arterial revascularization. There was no statistical difference in survival duration among the three groups (128.3 h ± 48.5 h vs 102.7 h ± 59.8 h vs 98.7 h ± 46.8 h, P = 0.234). Ascites and liver necrosis were not found at autopsy. Bile was present in the bile duct and all anastomoses were patent.
CONCLUSION: Our experimental results indicate that the whole liver of a big dog can be split into three parts, every one of which can be transplanted to a small recipient as an independent allograft.
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Emre S, Umman V, Cimsit B, Rosencrantz R. Current concepts in pediatric liver transplantation. ACTA ACUST UNITED AC 2012; 79:199-213. [PMID: 22499491 DOI: 10.1002/msj.21305] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Liver transplantation is the definitive treatment for end-stage liver disease in both children and adults. Advances over the last 2 decades have resulted in excellent patient and graft survival rates in what were previously cases of fatal disorders. These developments have been due to innovations in surgical technique, increased surgical experience, refinements in immunosuppressive regimens, quality improvements in intraoperative anesthetic management, better understanding of the pathophysiology of the liver diseases, and better preoperative and postoperative care. Remarkably, the use of split-liver and living-related liver transplantation surgical techniques has helped mitigate the well-recognized national organ shortage. This review will discuss the major aspects of pediatric liver transplantation as it pertains to indication for transplantation, recipient selection and listing for orthotopic liver transplantation, pre-orthotopic liver transplantation care of children, optimal timing of orthotopic liver transplantation, surgical technical considerations, postoperative care and complications, and patient and graft survival outcomes.
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Affiliation(s)
- Sukru Emre
- Yale University School of Medicine, New Haven, CT, USA.
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DuBray BJ, Levy RV, Balachandran P, Conzen KD, Upadhya GA, Anderson CD, Chapman WC. Novel three-dimensional imaging technique improves the accuracy of hepatic volumetric assessment. HPB (Oxford) 2011; 13:670-4. [PMID: 21843269 PMCID: PMC3183453 DOI: 10.1111/j.1477-2574.2011.00350.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND With pre-operative prediction of liver volume becoming increasingly important to safely carry out complex hepatic resections, the aim of the present study was to validate the accuracy of a three-dimensional (3-D) liver surgery operative planning software in performing hepatic volumetry. METHODS Between 1999 and 2007, we performed 29 live donor liver resections for transplantation. Eleven patients had pre-operative volumetry performed by radiologists from either computed tomography (CT) or magnetic resonance (MR) imaging with documentation of the corresponding specimen weight. Retrospectively, images were uploaded into Scout™ where 3-D models of each case were generated to perform volumetry. A correlational analysis was performed followed by an accuracy comparison. RESULTS Estimations by both radiologists and Scout™ were significantly correlated with the specimen weights, P ≤ 0.0001. Compared with radiologists' volumetry, Scout™ significantly improved overall accuracy [per cent error (PE) 20.0% ± 5.3 vs. 32.9% ± 5.7, P=0.005], accuracy of CT-based estimations (PE 23.2% ± 6.7 vs. 37.2% ± 6.9, P=0.023) and accuracy of the left lateral section (PE 11.1% ± 3.9 vs. 26.6% ± 6.8, P=0.027). DISCUSSION This 3-D planning software is a valid tool for use in volumetry. Significance is greatest for CT-based models of the left lateral section. This approach gives surgeons the ability to assess volumetrics and actively plan resections.
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