1
|
Kulkarni AV, Wall A, Reddy KR, Bittermann T. Early living donor liver transplantation for alcohol-associated hepatitis: Status in the era of increasing demand, unmet needs, and future considerations. Liver Transpl 2024:01445473-990000000-00426. [PMID: 39073609 DOI: 10.1097/lvt.0000000000000448] [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: 04/16/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
Hazardous alcohol consumption is the leading cause of liver disease worldwide. Alcohol-associated hepatitis (AH) is an acute and serious presentation of alcohol-associated liver disease that is associated with high short-term mortality. Medical management remains limited to corticosteroid therapy and intensive nutrition but improves survival in <50% of individuals. Liver transplantation (LT) is increasingly recognized as a treatment option for many patients with AH and may lead to greater survival benefits than medical management alone. The rate of waitlistings and LTs for AH has doubled in recent years, especially in the United States. Several studies from the West have reported early LT for AH to be successful, where deceased donor LT is the norm. The challenges of LT in living donor centers, particularly for those with AH, are unique and have previously not been discussed in depth. In this review, we aim to discuss the challenges unique to LDLT with respect to candidate and donor selection, ethical considerations, disparities in LDLT, post-LT alcohol relapse, and measures to prevent them while also addressing the definitions and outcomes of early-living donor liver LT for AH.
Collapse
Affiliation(s)
- Anand V Kulkarni
- Department of Hepatology, Asian Institute of Gastroenterology, Hyderabad, Telangana, India
| | - Anji Wall
- Division of Abdominal Transplantation, Baylor University Medical Center, Dallas, Texas, USA
| | - K Rajender Reddy
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Therese Bittermann
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| |
Collapse
|
2
|
Tian X, Wu L, Li X, Zheng W, Zuo H, Song H. Exosomes derived from bone marrow mesenchymal stem cells alleviate biliary ischemia reperfusion injury in fatty liver transplantation by inhibiting ferroptosis. Mol Cell Biochem 2024; 479:881-894. [PMID: 37243945 PMCID: PMC11016128 DOI: 10.1007/s11010-023-04770-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 05/15/2023] [Indexed: 05/29/2023]
Abstract
Fatty liver grafts are susceptible to ischemia reperfusion injury (IRI), increasing the risk of biliary complications after liver transplantation (LT). Ferroptosis, a newly recognized programmed cell death, is expected to be a novel therapeutic target for IRI. We investigated whether exosomes derived from heme oxygenase 1-modified bone marrow mesenchymal stem cells (HExos) relieve ferroptosis and protect biliary tracts from IRI in a rat fatty liver transplantation model. Rats were fed with a methionine choline deficient (MCD) diet for 2 weeks to induce severe hepatic steatosis. Steatotic grafts were implanted and HExos were administered after liver transplantation. A series of functional assays and pathological analysis were performed to assess ferroptosis and biliary IRI. The HExos attenuated IRI following liver transplantation, as demonstrated by less ferroptosis, improved liver function, less Kupffer and T cell activation, and less long-term biliary fibrosis. MicroRNA (miR)-204-5p delivered by HExos negatively regulated ferroptosis by targeting a key pro-ferroptosis enzyme, ACSL4. Ferroptosis contributes to biliary IRI in fatty liver transplantation. HExos protect steatotic grafts by inhibiting ferroptosis, and may become a promising strategy to prevent biliary IRI and expand the donor pool.
Collapse
Affiliation(s)
- Xuan Tian
- School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - Longlong Wu
- School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - Xiang Li
- Tianjin First Central Hospital Clinic Institute, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Weiping Zheng
- Department of Organ Transplantation, Tianjin First Central Hospital, School of Medicine, Nankai University, No. 24 Fukang Road, Nankai District, Tianjin, 300192, People's Republic of China
- NHC Key Laboratory of Critical Care Medicine, Tianjin, 300192, People's Republic of China
| | - Huaiwen Zuo
- Tianjin First Central Hospital Clinic Institute, Tianjin Medical University, Tianjin, 300070, People's Republic of China
| | - Hongli Song
- Department of Organ Transplantation, Tianjin First Central Hospital, School of Medicine, Nankai University, No. 24 Fukang Road, Nankai District, Tianjin, 300192, People's Republic of China.
- Tianjin Key Laboratory of Organ Transplantation, Tianjin, People's Republic of China.
| |
Collapse
|
3
|
Burke GW, Mitrofanova A, Fontanella AM, Vendrame F, Ciancio G, Vianna RM, Roth D, Ruiz P, Abitbol CL, Chandar J, Merscher S, Pugliese A, Fornoni A. Transplantation: platform to study recurrence of disease. Front Immunol 2024; 15:1354101. [PMID: 38495894 PMCID: PMC10940352 DOI: 10.3389/fimmu.2024.1354101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/29/2024] [Indexed: 03/19/2024] Open
Abstract
Beyond the direct benefit that a transplanted organ provides to an individual recipient, the study of the transplant process has the potential to create a better understanding of the pathogenesis, etiology, progression and possible therapy for recurrence of disease after transplantation while at the same time providing insight into the original disease. Specific examples of this include: 1) recurrence of focal segmental glomerulosclerosis (FSGS) after kidney transplantation, 2) recurrent autoimmunity after pancreas transplantation, and 3) recurrence of disease after orthotopic liver transplantation (OLT) for cirrhosis related to progressive steatosis secondary to jejuno-ileal bypass (JIB) surgery. Our team has been studying these phenomena and their immunologic underpinnings, and we suggest that expanding the concept to other pathologic processes and/or transplanted organs that harbor the risk for recurrent disease may provide novel insight into the pathogenesis of a host of other disease processes that lead to organ failure.
Collapse
Affiliation(s)
- George William Burke
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Alla Mitrofanova
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | | | - Francesco Vendrame
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Gaetano Ciancio
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Rodrigo M. Vianna
- Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - David Roth
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Phillip Ruiz
- Transplant Pathology, Immunology and Histocompatibility Laboratory University of Miami Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Carolyn L. Abitbol
- Pediatric Nephrology & Hypertension, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jayanthi Chandar
- Pediatric Kidney Transplant, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Sandra Merscher
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Peggy and Harold Katz Family Drug Discovery Center, Department of Medicine, University of Miami - Miller School of Medicine, Miami, FL, United States
| | - Alberto Pugliese
- Department of Diabetes Immunology, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope, Duarte, CA, United States
| | - Alessia Fornoni
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
- Peggy and Harold Katz Family Drug Discovery Center, Department of Medicine, University of Miami - Miller School of Medicine, Miami, FL, United States
| |
Collapse
|
4
|
Liu H, Yeung WHO, Pang L, Liu J, Liu XB, Pan Ng KT, Zhang Q, Qiu WQ, Zhu Y, Ding T, Wang Z, Zhu JY, Lo CM, Man K. Arachidonic acid activates NLRP3 inflammasome in MDSCs via FATP2 to promote post-transplant tumour recurrence in steatotic liver grafts. JHEP Rep 2023; 5:100895. [PMID: 37916155 PMCID: PMC10616418 DOI: 10.1016/j.jhepr.2023.100895] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/06/2023] [Accepted: 08/16/2023] [Indexed: 11/03/2023] Open
Abstract
Background & Aims The steatotic grafts have been applied in liver transplantation frequently owing to the high incidence of non-alcoholic fatty liver disease. However, fatty livers are vulnerable to graft injury. Myeloid-derived suppressor cell (MDSC) recruitment during liver graft injury promotes tumour recurrence. Lipid metabolism exerts the immunological influence on MDSCs in tumour progression. Here, we aimed to explore the role and mechanism of inflammasome activation in MDSCs induced by lipid metabolism during fatty liver graft injury and the subsequent effects on tumour recurrence. Methods MDSC populations and nucleotide-binding oligomerisation domain-like receptor family pyrin domain containing 3 (NLRP3) inflammasome levels were investigated in a clinical cohort and a rat liver transplantation model. The mechanism of NLRP3 activation by specific fatty acids was explored in mouse hepatic ischaemia/reperfusion injury (IRI) with tumour recurrence model and in vitro studies. Results MDSC populations and NLRP3 levels were increased with higher tumour recurrent rate in patients using steatotic grafts. NLRP3 was upregulated in MDSCs with lipid accumulation post mouse fatty liver IRI. Mechanistically, arachidonic acid was discovered to activate NLRP3 inflammasome in MDSCs through fatty acid transport protein 2 (FATP2), which was identified by screening lipid uptake receptors. The mitochondrial dysfunction with enhanced reactive oxygen species bridged arachidonic acid uptake and NLRP3 activation in MDSCs, which subsequently stimulated CD4+ T cells producing more IL-17 in fatty liver IRI. Blockade of FATP2 inhibited NLRP3 activation in MDSCs, IL-17 production in CD4+ T cells, and the tumour recurrence post fatty liver IRI. Conclusions During fatty liver graft injury, arachidonic acid activated NLRP3 inflammasome in MDSCs through FATP2, which subsequently stimulated CD4+ T cells producing IL-17 to promote tumour recurrence post transplantation. Impact and implications The high incidence of non-alcoholic fatty liver disease resulted in the frequent application of steatotic donors in liver transplantation. Our data showed that the patients who underwent liver transplantation using fatty grafts experienced higher tumour recurrence. We found that arachidonic acid activated NLRP3 inflammasome in MDSCs through FATP2 during fatty liver graft injury, which led to more IL-17 secretion of CD4+ T cells and promoted tumour recurrence post transplantation. The inflammasome activation by aberrant fatty acid metabolism in MDSCs bridged the acute-phase fatty liver graft injury and liver tumour recurrence.
Collapse
Affiliation(s)
- Hui Liu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wai Ho Oscar Yeung
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Li Pang
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jiang Liu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Xiao Bing Liu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Kevin Tak Pan Ng
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Qingmei Zhang
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wen Qi Qiu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Yueqin Zhu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Tao Ding
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Zhe Wang
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Ji Ye Zhu
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Chung Mau Lo
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Kwan Man
- Department of Surgery, School of Clinical Medicine, HKU-SZH and LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| |
Collapse
|
5
|
Arslan A, Romano A, Wang Q, Wang B, Brismar TB, Nowak G. Volumetric graft changes after liver transplantation: evidence of adaptation to recipient body size. Am J Physiol Gastrointest Liver Physiol 2023; 325:G398-G406. [PMID: 37581219 DOI: 10.1152/ajpgi.00040.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/16/2023]
Abstract
It is believed that whole liver grafts adjust their size to fit the body size of the recipient after transplantation, despite a lack of evidence. The aim of this study was to test this hypothesis. This was a retrospective cohort study of 113 liver transplantations performed at Karolinska University Hospital. The cohort was divided based on graft volume-to-standard liver volume ratio (GV/SLV) into quartiles of small, mid, and large grafts. Serial volumetric assessment was performed on the day of transplantation and at posttransplant check-ups early (<2 mo) and late (9-13 mo) after transplantation using computed tomography (CT) volumetry. Change in GV/SLV ratio over time was analyzed with ANOVA repeated measures. A multiple regression model was used to investigate the influence of intraoperative blood flow, recipient body size, age, and relative sickness on graft volume changes. Between the three time points, mean GV/SLV ratio adapted to 0.55-0.94-1.00 in small grafts (n = 29, P < 0.001); 0.87-1.18-1.13 in midgrafts (n = 56, P < 0.001); 1.11-1.51-1.18 in large grafts (n = 28, P < 0.001). Regression analysis showed a positive correlation between posttransplant graft growth and portal flow (β = 1.18, P = 0.005), arterial flow (β = 0.17, P = 0.001), and recipient body surface area (β = 59.85, P < 0.001). A negative correlation was observed for graft weight-to-recipient weight ratio (GRWR; β = -33.12, P < 0.001). Grafts with initial GV/SLV-ratio < 0.6 adapt toward the ideal volume for recipient body size 1 year after transplantation. The disparity between graft size relative to recipient body size, and the portal and arterial perfusion, influence volumetric graft changes.NEW & NOTEWORTHY This is the first and largest human study to verify the hypothesis that whole liver grafts adjust their size to match recipient body size 1 year after transplantation-a phenomenon that has previously only been observed in experimental animal studies and human case reports. The direction of volumetric changes is driven by the disparity between graft size relative to recipient body surface area and weight, as well as the intraoperative portal- and arterial graft perfusion.
Collapse
Affiliation(s)
- Alin Arslan
- Division of Transplantation Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Antonio Romano
- Division of Transplantation Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Qiang Wang
- Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiology, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Benny Wang
- Division of Transplantation Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Torkel B Brismar
- Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiology, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Greg Nowak
- Division of Transplantation Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
6
|
Yang Zhou J, Werner JM, Glehr G, Geissler EK, Hutchinson JA, Kronenberg K. Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver. Front Immunol 2022; 13:898473. [PMID: 35720369 PMCID: PMC9202826 DOI: 10.3389/fimmu.2022.898473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Background Steatotic livers are more prone to rejection, but are often transplanted owing to the shortage of available organs. Type II NKT (T2NKT) cells are liver-resident lymphocytes that react to lipids presented by CD1d. The role of T2NKT cells in rejection of fatty liver transplants is unclear, partly because of a lack of T2NKT cell markers and their very low frequency in blood. Here, we quantify human T2NKT cells in blood and liver tissue by flow cytometry and provide a strategy for their enrichment and expansion. Methods Human T2NKT cells were identified as CD3+ CD56+ CD161+ TCR-γᵹ- TCRVα7.2- and TCRVα24- cells. T2NKT cells were enriched from blood by sequential positive selection using CD56 and CD3 microbeads. These were subsequently FACS-sorted to purity then expanded in vitro for 3 weeks using anti-CD3/CD28 beads and TGF-β1. Results The frequency of human T2NKT cells in blood was very low (0.8 ± 0.4% of CD3+ T cells) but they were a more abundant population in liver (6.3 ± 0.9%). Enriched T2NKT cells expressed the transcription factor PLZF. A novel subset of FoxP3+ T2NKT cells was discovered in blood and liver tissue. T2NKT cells were expanded in culture by 15- to 28-fold over 3 weeks, during which time they maintained expression of all identifying markers, including PLZF and FoxP3. Conclusions Our work defines new strategies for identifying and isolating T2NKT cells from human blood and liver tissue. We showed that this rare population can be expanded in vitro in order to obtain experimentally amenable cell numbers. Further, we identified a novel T2NKT cell subset that stably expresses FoxP3, which might play a role in regulating innate-like lymphocyte responses in steatotic liver transplants.
Collapse
Affiliation(s)
- Jordi Yang Zhou
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany.,Leibniz Institute for Immunotherapy, Regensburg, Germany
| | - Jens M Werner
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Gunther Glehr
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Edward K Geissler
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany.,Leibniz Institute for Immunotherapy, Regensburg, Germany.,Fraunhofer-Institute for Toxicology and Experimental Medicine Institute for Toxicology and Experimental Medicine-Regensburg (ITEM-R), Regensburg, Germany.,Regensburg International Graduate School of Life Sciences, University of Regensburg, Regensburg, Germany
| | - James A Hutchinson
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany
| | | |
Collapse
|
7
|
A Clinical Tool to Guide Selection and Utilization of Marginal Donor Livers With Graft Steatosis in Liver Transplantation. Transplant Direct 2022; 8:e1280. [PMID: 35047662 PMCID: PMC8759620 DOI: 10.1097/txd.0000000000001280] [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: 06/16/2021] [Revised: 11/03/2021] [Accepted: 11/19/2021] [Indexed: 11/26/2022] Open
Abstract
Supplemental Digital Content is available in the text. Background. Donor liver biopsy (DLBx) in liver transplantation provides information on allograft quality; however, predicting outcomes from these allografts remains difficult. Methods. Between 2006 and 2015, 16 691 transplants with DLBx were identified from the Standard Transplant Analysis and Research database. Cox proportional hazard regression analyses identified donor and recipient characteristics associated with 30-d, 90-d, 1-y, and 3-y graft survival. A composite model, the Liver Transplant After Biopsy (LTAB) score, was created. The Mini-LTAB was then derived consisting of only donor age, macrosteatosis on DLBx, recipient model for end-stage liver disease score, and cold ischemic time. Risk groups were identified for each score and graft survival was evaluated. P values <0.05 were considered significant. Results. The LTAB model used 14 variables and 5 risk groups and identified low-, mild-, moderate-, high-, and severe-risk groups. Compared with moderate-risk recipients, severe-risk recipients had increased risk of graft loss at 30 d (hazard ratio, 3.270; 95% confidence interval, 2.568-4.120) and at 1 y (2.258; 1.928-2.544). The Mini-LTAB model identified low-, moderate-, and high-risk groups. Graft survival in Mini-LTAB high-risk transplants was significantly lower than moderate- or low-risk transplants at all time points. Conclusions. The LTAB and Mini-LTAB scores represent guiding principles and provide clinically useful tools for the successful selection and utilization of marginal allografts in liver transplantation.
Collapse
|
8
|
An Update on Usage of High-Risk Donors in Liver Transplantation. J Clin Med 2021; 11:jcm11010215. [PMID: 35011956 PMCID: PMC8746244 DOI: 10.3390/jcm11010215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/01/2021] [Accepted: 12/28/2021] [Indexed: 12/13/2022] Open
Abstract
The ideal management for end stage liver disease, acute liver failure, and hepatocellular carcinoma (HCC), within specific criteria, is liver transplantation (LT). Over the years, there has been a steady increase in the candidates listed for LT, without a corresponding increase in the donor pool. Therefore, due to organ shortage, it has been substantially difficult to reduce waitlist mortality among patients awaiting LT. Thus, marginal donors such as elderly donors, steatotic donors, split liver, and donors after cardiac death (DCD), which were once not commonly used, are now considered. Furthermore, it is encouraging to see the passing of Acts, such as the HIV Organ Policy Equity (HOPE) Act, enabling further research and development in utilizing HIV grafts. Subsequently, the newer antivirals have aided in successful post-transplant period, especially for hepatitis C positive grafts. However, currently, there is no standardization, and protocols are center specific in the usage of marginal donors. Therefore, studies with longer follow ups are required to standardize its use.
Collapse
|
9
|
Salum GM, el Meguid MA, Abelhafez TH, Medhat E, Abdel Aziz AO, Dawood R. Evaluation of seven gene signature for predicting HCV recurrence post-liver transplantation. J Genet Eng Biotechnol 2021; 19:174. [PMID: 34757522 PMCID: PMC8581076 DOI: 10.1186/s43141-021-00266-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 10/05/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Orthotropic liver transplantation (OLT) offers a therapeutic choice for hepatocellular carcinoma (HCC) patients. The poor outcome of liver transplantation is HCV recurrence. Several genome-wide associated studies (GWAS) have reported many genetic variants to be associated with HCV recurrence. Seven gene polymorphisms formed a cirrhosis risk score (CRS) signature that could be used to distinguish chronic HCV patients at high risk from those at low risk for cirrhosis in non-transplant patients. This study aims to examine the association of CRS score and other clinical parameters with the probability for HCC emergence and/or the rate of HCV recurrence following liver transplantation. RESULTS Seven gene polymorphisms, forming the CRS, were genotyped by real-time PCR using allelic discrimination protocol in 199 end-stage liver disease patients (79 child A, 43 child B, and 77child C), comprising 106 patients who encountered liver transplantation. Recipient CRS scores were correlated with HCV recurrence (HCV-Rec) at the end of the third year after OLT. Around 81% (39) recipients with low steatosis (LS; < 3.5%) donor percentage revealed no HCV recurrence (non-Rec) (p<0.001). CRS score could distinguish between child A, child B, and child C only at the low-risk group. Among the HCV Rec group 27% (8/30), 40% (12/30), and 33% (10/30) fell into the high, moderate, and low CRS risk groups, respectively. Stepwise logistic regression evinced two features more likely to be seen in HCV-Rec patients: abnormal ALT [OR, 1.1; 95% CI, 1.02-1.2] and donor steatosis >3.5% [OR, 46.07; 95% CI, 1.5-1407.8]. CONCLUSIONS Accordingly, the CRS score seems to be less useful to predict HCV recurrence after OLT. ALT and donor steatosis (exceed 3.5%) can significantly promote the HCV recurrence post-OLT. Moreover, the combination of MMF and CNI positively heightens HCV recurrence.
Collapse
Affiliation(s)
- Ghada M. Salum
- Department of Microbial Biotechnology, Genetic Engineering Division, National Research Centre, Dokki, P.O. 12622, Giza, Egypt
| | - Mai Abd el Meguid
- Department of Microbial Biotechnology, Genetic Engineering Division, National Research Centre, Dokki, P.O. 12622, Giza, Egypt
| | - Tawfeek H. Abelhafez
- Department of Microbial Biotechnology, Genetic Engineering Division, National Research Centre, Dokki, P.O. 12622, Giza, Egypt
| | - Eman Medhat
- Department of Endemic Medicine and Hepato-gastroenterology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Ashraf O. Abdel Aziz
- Department of Endemic Medicine and Hepato-gastroenterology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Reham Dawood
- Department of Microbial Biotechnology, Genetic Engineering Division, National Research Centre, Dokki, P.O. 12622, Giza, Egypt
| |
Collapse
|
10
|
Richards JA, Randle LV, Butler MChir AJ, Martin JL, Fedotovs A, Davies SE, Watson CJE, Robertson PA. Pilot study of a noninvasive real-time optical backscatter probe in liver transplantation. Transpl Int 2021; 34:709-720. [PMID: 33462839 DOI: 10.1111/tri.13823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/30/2020] [Accepted: 01/15/2021] [Indexed: 11/28/2022]
Abstract
Transplantation of severely steatotic donor livers is associated with early allograft dysfunction and poorer graft survival. Histology remains the gold standard diagnostic of donor steatosis despite the lack of consensus definition and its subjective nature. In this prospective observational study of liver transplant patients, we demonstrate the feasibility of using a handheld optical backscatter probe to assess the degree of hepatic steatosis and correlate the backscatter readings with clinical outcomes. The probe is placed on the surface of the liver and emits red and near infrared light from the tip of the device and measures the amount of backscatter of light from liver tissue via two photodiodes. Measurement of optical backscatter (Mantel-Cox P < 0.0001) and histopathological scoring of macrovesicular steatosis (Mantel-Cox P = 0.046) were predictive of 5-year graft survival. Recipients with early allograft dysfunction defined according to both Olthoff (P = 0.0067) and MEAF score (P = 0.0097) had significantly higher backscatter levels from the donor organ. Backscatter was predictive of graft loss (AUC 0.75, P = 0.0045). This study demonstrates the feasibility of real-time measurement of optical backscatter in donor livers. Early results indicate readings correlate with steatosis and may give insight to graft outcomes such as early allograft dysfunction and graft loss.
Collapse
Affiliation(s)
- James A Richards
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,The National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, Cambridge, UK
| | - Lucy V Randle
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,The National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, Cambridge, UK
| | - Andrew J Butler MChir
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,The National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, Cambridge, UK
| | - Jack L Martin
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,The National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, Cambridge, UK
| | - Arturs Fedotovs
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,The National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, Cambridge, UK
| | - Susan E Davies
- Department of Pathology, Cambridge University Hospitals, Addenbrooke's Hospital, Cambridge, UK
| | - Christopher J E Watson
- Department of Surgery, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.,NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,Department of Pathology, Cambridge University Hospitals, Addenbrooke's Hospital, Cambridge, UK
| | - Paul A Robertson
- Department of Engineering, Electrical Engineering Division, University of Cambridge, Cambridge, UK
| |
Collapse
|