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Poudel S, Gupta S, Saigal S. Basics and Art of Immunosuppression in Liver Transplantation. J Clin Exp Hepatol 2024; 14:101345. [PMID: 38450290 PMCID: PMC10912712 DOI: 10.1016/j.jceh.2024.101345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 01/09/2024] [Indexed: 03/08/2024] Open
Abstract
Liver transplantation is one of the most challenging areas in the medical field. Despite that, it has already been established as a standard treatment option, especially in decompensated cirrhosis and selected cases of hepatocellular carcinoma and acute liver failure. Complications due to graft rejection, including mortality and morbidity, have greatly improved over time due to better immunosuppressive agents and management protocols. Currently, immunosuppression in liver transplant patients makes use of the best possible combinations of effective agents to achieve optimal immunosuppression for long-term graft survival. Induction agents are no longer used routinely, and the aim is to provide minimal immunosuppression in the maintenance phase. Currently available immunosuppressive agents are mainly classified as biological and pharmacological agents. Though the protocols may vary among the centers and over time, the basics of effective use usually remain similar. Most protocols use the combination of multiple agents with different mechanisms of action to reduce the dose and minimize the side effects. Along with the improvement in operative and perioperative techniques, this art of immunosuppression has contributed to the recent progress made in the outcomes of liver transplants. In this review, we will discuss the various types of immunosuppressive agents currently in use, the different protocols of immunosuppression used, and the art of optimal use for achieving maximum immunosuppression without increasing toxicity. We will also discuss the practical aspects of various immunosuppression regimens, including drug monitoring, and briefly discuss the concepts of immunosuppression minimization and withdrawal.
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Affiliation(s)
- Shekhar Poudel
- Fellow Transplant Hepatology, Centre for Liver and Biliary Sciences, Max Super Specialty Hospital, Saket, New Delhi, India
| | - Subhash Gupta
- Liver Transplant and Gastrointestinal Surgery, Centre for Liver and Biliary Sciences, Max Super Speciality Hospital, Saket, New Delhi, India
| | - Sanjiv Saigal
- Principal Director and Head, Transplant Hepatology, Centre for Liver and Biliary Sciences, Max Super Specialty Hospital, Saket, New Delhi, India
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2
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Odenwald MA, Roth HF, Reticker A, Segovia M, Pillai A. Evolving challenges with long-term care of liver transplant recipients. Clin Transplant 2023; 37:e15085. [PMID: 37545440 DOI: 10.1111/ctr.15085] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/17/2023] [Accepted: 07/23/2023] [Indexed: 08/08/2023]
Abstract
The number of liver transplants (LT) performed worldwide continues to rise, and LT recipients are living longer post-transplant. This has led to an increasing number of LT recipients requiring lifelong care. Optimal care post-LT requires careful attention to both the allograft and systemic issues that are more common after organ transplantation. Common causes of allograft dysfunction include rejection, biliary complications, and primary disease recurrence. While immunosuppression prevents rejection and reduces incidences of some primary disease recurrence, it has detrimental systemic effects. Most commonly, these include increased incidences of metabolic syndrome, various malignancies, and infections. Therefore, it is of utmost importance to optimize immunosuppression regimens to prevent allograft dysfunction while also decreasing the risk of systemic complications. Institutional protocols to screen for systemic disease and heightened clinical suspicion also play an important role in providing optimal long-term post-LT care. In this review, we discuss these common complications of LT as well as unique considerations when caring for LT recipients in the years after transplant.
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Affiliation(s)
- Matthew A Odenwald
- Department of Medicine, Section of Gastroenterology, Hepatology, and Nutrition, University of Chicago Medicine, Chicago, USA
| | - Hannah F Roth
- Department of Medicine, Section of Gastroenterology, Hepatology, and Nutrition, University of Chicago Medicine, Chicago, USA
| | - Anesia Reticker
- Department of Pharmacy, University of Chicago Medicine, Chicago, USA
| | - Maria Segovia
- Department of Medicine, Section of Gastroenterology, Duke University School of Medicine, Durham, USA
| | - Anjana Pillai
- Department of Medicine, Section of Gastroenterology, Hepatology, and Nutrition, University of Chicago Medicine, Chicago, USA
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Panackel C, Mathew JF, Fawas N M, Jacob M. Immunosuppressive Drugs in Liver Transplant: An Insight. J Clin Exp Hepatol 2022; 12:1557-1571. [PMID: 36340316 PMCID: PMC9630030 DOI: 10.1016/j.jceh.2022.06.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/16/2022] [Indexed: 12/12/2022] Open
Abstract
Liver transplantation (LT) is the standard of care for end-stage liver failure and hepatocellular carcinoma. Over the years, immunosuppression regimens have improved, resulting in enhanced graft and patient survival. At present, the side effects of immunosuppressive agents are a significant threat to post-LT quality of life and long-term outcome. The role of personalized immunosuppression is to reach a delicate balance between optimal immunosuppression and minimal side effects. Today, immunosuppression in LT is more of an art than a science. There are no validated markers for overimmunosuppression and underimmunosuppression, only a few drugs have therapeutic drug monitoring and immunosuppression regimens vary from center to center. The immunosuppressive agents are broadly classified into biological agents and pharmacological agents. Most regimens use multiple agents with different modes of action to reduce the dosage and minimize the toxicities. The calcineurin inhibitor (CNI)-related toxicities are reduced by antibody induction or using mTOR inhibitor/antimetabolites as CNI sparing or CNI minimization strategies. Post-liver transplant immunosuppression has an intensive phase in the first three months when alloreactivity is high, followed by a maintenance phase when immunosuppression minimization protocols are implemented. Over time some patients achieve "tolerance," defined as the successful stopping of immunosuppression with good graft function and no indication of rejection. Cell-based therapy using immune cells with tolerogenic potential is the future and may permit complete withdrawal of immunosuppressive agents.
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Key Words
- AMR, Antibody-mediated rejection
- APCs, Antigen-presenting cells
- ATG, Anti-thymocyte globulin
- CNI, Calcineurin inhibitors
- CsA, Cyclosporine A
- EVR, Everolimus
- IL-2R, Interleukin 2 Receptor
- LT, Liver transplantation
- MMF, Mycophenolate mofetil
- MPA, Mycophenolic acid
- SRL, Sirolimus
- TAC, Tacrolimus
- TCMR, T-cell-mediated rejection
- antimetabolites
- basiliximab
- calcineurin inhibitors
- cyclosporine
- everolimus
- immunosuppression
- liver transplantation
- mTORi, mammalian targets of rapamycin inhibitor
- mycophenolate mofetil
- tacrolimus
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Affiliation(s)
- Charles Panackel
- Aster Integrated Liver Care, Aster Medcity, Kochi, Kerala, 682027, India
| | - Joe F Mathew
- Aster Integrated Liver Care, Aster Medcity, Kochi, Kerala, 682027, India
| | - Mohamed Fawas N
- Aster Integrated Liver Care, Aster Medcity, Kochi, Kerala, 682027, India
| | - Mathew Jacob
- Aster Integrated Liver Care, Aster Medcity, Kochi, Kerala, 682027, India
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Saliba F, Duvoux C, Dharancy S, Dumortier J, Calmus Y, Gugenheim J, Kamar N, Salamé E, Neau‐Cransac M, Vanlemmens C, Durand F, Pageaux G, Hardwigsen J, Benkhatar Y, Derquenne F, Conti F. Five-year outcomes in liver transplant patients receiving everolimus with or without a calcineurin inhibitor: Results from the CERTITUDE study. Liver Int 2022; 42:2513-2523. [PMID: 35962772 PMCID: PMC9826472 DOI: 10.1111/liv.15396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/01/2022] [Accepted: 08/11/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND AND AIMS To report 5-year outcomes of the CERTITUDE study. METHODS An observational study in patients with liver transplantation (LTx) compared the long-term impact of immunosuppression (with/without a calcineurin inhibitor) on renal function, cancers, major cardiovascular events (MACEs) and other safety parameters. All patients completing the 6-month SIMCER study were recruited and analysed according to treatment received at randomization and actual treatment received during the follow-up. RESULTS Of the 143 enrolled patients, 119 completed the 5-year follow-up (everolimus [EVR], n = 55; tacrolimus [TAC], n = 64). The mean absolute change in estimated glomerular filtration rate was not statistically different between both groups (TAC, -15.53 ml/min/1.73 m2 and EVR, -14.56 ml/min/1.73 m2 ). In the treatment subgroups based on actual treatment received, renal function was preserved better in the EVR subgroup compared with other subgroups (p = .051). Treated biopsy-proven acute rejection was higher in the EVR group (15.4% vs. 6.4%); however, the majority of events were mild in severity. MACE occurred in 9.2% vs. 14.1% of patients in the EVR and TAC groups respectively (p = .370). De novo cancer was reported in 14 and 5 patients in EVR and TAC groups respectively. Hepatocellular carcinoma (HCC) recurrence was observed in the TAC group alone (n = 4). Adverse events and treatment discontinuation owing to an adverse event were higher in the EVR group. CONCLUSIONS The CERTITUDE study demonstrated that EVR- and TAC-based regimens have comparable efficacy, safety and tolerability up to 5 years post-LTx.
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Affiliation(s)
- Faouzi Saliba
- AP‐HP, Hôpital Paul Brousse, Centre Hépato‐Biliaire, INSERM Unit 1193Université Paris SaclayVillejuifFrance
| | | | - Sébastien Dharancy
- Service Hépatologie‐Transplantation, Hôpital Huriez, CHRU LilleLilleFrance
| | - Jérôme Dumortier
- Hospices civils de Lyon, Hôpital Edouard Herriot, Université Claude Bernard Lyon 1LyonFrance
| | - Yvon Calmus
- APHP, Unité Médicale de Transplantation Hépatique, service d'hépato‐gastroentérologie, Hôpital Pitié Salpêtrière, Sorbonne Université, INSERM UMR S 938, Centre de recherche Saint‐Antoine (CRSA), Institute of Cardiometabolisme and Nutrition (ICAN)ParisFrance
| | - Jean Gugenheim
- Department of Digestive Surgery and Liver TransplantationArchet Hospital, Université Côte d'Azur, 151Route de Saint‐Antoine de Ginestière, NiceFrance
| | - Nassim Kamar
- Department of Nephrology and Organ TransplantationToulouse University Hospital, Université Paul SabatierToulouseFrance
| | - Ephrem Salamé
- Service de Chirurgie Hépato‐Biliare et de Transplantation Hépatique,Hôpital Trousseau, Chambray les Tours,ToursFrance
| | - Martine Neau‐Cransac
- Service de Chirurgie Hépatobiliaire et Transplantation Hépatique, Bâtiment Magellan, Hôpital Haut LévèquePessacFrance
| | - Claire Vanlemmens
- Service Hépatologie et Soins Intensifs Digestifs, CHU Jean MinjozBesançon CedexFrance
| | | | | | | | | | | | - Filomena Conti
- Department of Digestive Surgery and Liver TransplantationArchet Hospital, Université Côte d'Azur, 151Route de Saint‐Antoine de Ginestière, NiceFrance
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Price I, Wood A. Adult liver transplantation for the advanced clinical practitioner: an overview. BRITISH JOURNAL OF NURSING (MARK ALLEN PUBLISHING) 2022; 31:924-932. [PMID: 36227790 DOI: 10.12968/bjon.2022.31.18.924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Liver transplantation (LT) is a major surgical undertaking but, in a carefully selected population, it provides excellent outcomes in terms of prolongation of life and improvements in quality of life. This article outlines the processes of referral, assessment, operative course and post-transplant complications of LT, in the UK context. Specific consideration is also given to immunosuppressive medications and considerations around their prescription. The role of the advanced clinical practitioner (ACP) in primary or secondary care may focus on identifying potential candidates for transplantation and ensuring timely discussion and referral. Thus, a familiarity with eligibility criteria, and where to access this information, is important for all ACPs. Additionally, the increasing numbers of transplants performed in the UK mean that there is a large population of post-transplant patients in the wider community. These patients may present to healthcare services with a variety of issues relating to their LT, where early recognition and treatment has the potential to have major impacts on patient, or graft, function and longevity. Due to this, early discussions with specialist transplant centres is advised.
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Affiliation(s)
- Ian Price
- Advanced Nurse Practitioner, Edinburgh Transplant Centre, NHS Lothian, Edinburgh
| | - Alison Wood
- Programme Leader and Lecturer, Queen Margaret University, Edinburgh
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Akbulut S, Ozer A, Saritas H, Yilmaz S. Factors affecting anxiety, depression, and self-care ability in patients who have undergone liver transplantation. World J Gastroenterol 2021; 27:6967-6984. [PMID: 34790018 PMCID: PMC8567481 DOI: 10.3748/wjg.v27.i40.6967] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/15/2021] [Accepted: 10/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Depression, anxiety, and altered self-care ability are among the most important factors affecting the quality of life of liver transplant recipients. Depending on the severity of the underlying liver disease, signs and symptoms of anxiety and depression may become more pronounced.
AIM To evaluate the factors affecting depression, anxiety and self-care abilities of liver transplant recipients.
METHODS Recipients who are ≥ 18 years and who underwent liver transplantation at Inonu University Liver Transplantation Institute were included in this descriptive and cross-sectional study. Sample size analysis showed that the minimum number of recipients should be 301 (confidence level = 95%, confidence interval = 2.5, population = 1382). Three hundred and twenty recipients were interviewed and 316 recipients that have answered the questionnaires accurately were analyzed. The dependent variables were the Beck Depression Scale, State-Trait Anxiety Scale (Form I and II), and Self-Care Agency Scale. The independent variables of the study were sociodemographic characteristics, biliary complications, hepatocellular carcinoma, recommending liver transplantation to other patients, and the interval of out-patient clinic visits.
RESULTS Self-care ability scores were lower (P = 0.002) and anxiety scores were higher (P = 0.004) in recipients with biliary complications. On the other hand, in recipients with hepatocellular carcinoma, self-care scores were lower (P = 0.006) while depression (P = 0.003) and anxiety scores (P = 0.009) were higher. Liver transplantation recipients with a monthly income < 3000 Turkish liras had higher depression (P < 0.001) and anxiety (P = 0.003) scores. The recipients who stated that they would not recommend liver transplantation to others had lower self-care scores (P = 0.002), higher depression (P < 0.001), higher state anxiety (P = 0.02), and trait anxiety (P < 0.001) scores.
CONCLUSION Presence of biliary complications and hepatocellular carcinoma, low income level, and an obligation for monthly visits to the outpatient clinic are factors that are found to affect self-care capability, depression, and anxiety.
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Affiliation(s)
- Sami Akbulut
- Liver Transplant Institute, Inonu University Faculty of Medicine, Malatya 44280, Turkey
- Department of Public Health, Inonu University Faculty of Medicine, Malatya 44280, Turkey
| | - Ali Ozer
- Department of Public Health, Inonu University Faculty of Medicine, Malatya 44280, Turkey
| | - Hasan Saritas
- Department of Surgical Nursing, Siirt University Faculty of Nursing, Siirt 56100, Turkey
| | - Sezai Yilmaz
- Liver Transplant Institute, Inonu University Faculty of Medicine, Malatya 44280, Turkey
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Abstract
In liver transplant patients, solid tumors and post-transplant lymphoproliferative disorders (PTLD) have emerged as significant long-term mortality causes. Additionally, it is assumed that de novo malignancy (DNM) after liver transplantation (LT) is the second-leading cause of death after cardiovascular complications. Well-established risk factors for PTLD and solid tumors are calcineurin inhibitors (CNIs), tacrolimus (TAC), and cyclosporine, the cornerstones of all immunosuppressive (IS) therapies used after LT. The loss of immunocompetence facilitated by the host immune system due to prolonged IS therapy leads to cancer development, including in LT patients. Hindering DNA repair mechanisms, promoting tumor cell invasiveness, and hampering apoptosis are critical events in tumorigenesis and tumor growth in LT patients resulting from IS administration. This paper aims to overview the refined mechanisms of IS-induced tumorigenesis after LT and the loss of immunocompetence facilitated by the host immune system due to prolonged IS therapy. In addition, we also discuss in detail the mechanisms of action in different types of IS regimen used after LT, and their putative effect on DNM.
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8
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Lee WC, Wang YC, Hsu HY, Hsu PY, Cheng CH, Lee CF, Wu TJ, Chan KM. Immunological discrepancy in aged mice facilitates skin allograft survival. Aging (Albany NY) 2021; 13:16219-16228. [PMID: 34157682 PMCID: PMC8266325 DOI: 10.18632/aging.203152] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 05/14/2021] [Indexed: 04/29/2023]
Abstract
More and more aged people are undergoing organ transplantation. Understanding aging effects on immunity will be helpful for post-transplantation care and adjustment of immunosuppressants for aged recipients. A mouse model, using C3H mice as donors and aged/young C57BL/10J mice as recipients, was employed to study aging effects on immunity. The results showed that frequency of myeloid-derived suppressor cells (MDSC) and level of TGF-β was higher in aged mice than in young mice (4.4 ± 1.4% versus 1.6 ± 1.1%, p = 0.026 for MDSC; 21.04 ± 3.91 ng/ml versus 15.26 ± 5.01 ng/ml, p = 0.026 for TGF-β). In vivo, skin allograft survived longer on the aged than on young mice (19.7 ± 5.2 days versus 11.9 ± 4.1 days, p = 0.005). When entinostat was applied to block MDSC, the survival of skin allografts on aged mice was shorten to 13.5 ± 4.7 days which was not different from the survival on young mice (p = 0.359). In conclusion, allogeneic immunity was different in aged from young mice in high frequency of MDSC and high serum level of TGF-β. Blocking the function of MDSC reversed the low immunity in aged mice and caused skin allograft rejection similar to young recipients.
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Affiliation(s)
- Wei-Chen Lee
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Yu-Chao Wang
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Hsiu-Ying Hsu
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Pao-Yueh Hsu
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Chih-Hsien Cheng
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Chen-Fang Lee
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Ting-Jung Wu
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
| | - Kun-Ming Chan
- Division of Liver and Transplantation Surgery, Department of General Surgery, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan
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9
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Ochoa-Sanchez R, Tamnanloo F, Rose CF. Hepatic Encephalopathy: From Metabolic to Neurodegenerative. Neurochem Res 2021; 46:2612-2625. [PMID: 34129161 DOI: 10.1007/s11064-021-03372-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/31/2021] [Accepted: 06/03/2021] [Indexed: 12/15/2022]
Abstract
Hepatic encephalopathy (HE) is a neuropsychiatric syndrome of both acute and chronic liver disease. As a metabolic disorder, HE is considered to be reversible and therefore is expected to resolve following the replacement of the diseased liver with a healthy liver. However, persisting neurological complications are observed in up to 47% of transplanted patients. Several retrospective studies have shown that patients with a history of HE, particularly overt-HE, had persistent neurological complications even after liver transplantation (LT). These enduring neurological conditions significantly affect patient's quality of life and continue to add to the economic burden of chronic liver disease on health care systems. This review discusses the journey of the brain through the progression of liver disease, entering the invasive surgical procedure of LT and the conditions associated with the post-transplant period. In particular, it will discuss the vulnerability of the HE brain to peri-operative factors and post-LT conditions which may explain non-resolved neurological impairment following LT. In addition, the review will provide evidence; (i) supporting overt-HE impacts on neurological complications post-LT; (ii) that overt-HE leads to permanent neuronal injury and (iii) the pathophysiological role of ammonia toxicity on astrocyte and neuronal injury/damage. Together, these findings will provide new insights on the underlying mechanisms leading to neurological complications post-LT.
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Affiliation(s)
- Rafael Ochoa-Sanchez
- Hepato-Neuro Laboratory, CRCHUM, Université de Montréal, 900, rue Saint-Denis Pavillon R, R08.422, Montreal, QC, H2X-0A9, Canada
| | - Farzaneh Tamnanloo
- Hepato-Neuro Laboratory, CRCHUM, Université de Montréal, 900, rue Saint-Denis Pavillon R, R08.422, Montreal, QC, H2X-0A9, Canada
| | - Christopher F Rose
- Hepato-Neuro Laboratory, CRCHUM, Université de Montréal, 900, rue Saint-Denis Pavillon R, R08.422, Montreal, QC, H2X-0A9, Canada.
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Ferreira-Silva M, Faria-Silva C, Viana Baptista P, Fernandes E, Ramos Fernandes A, Corvo ML. Liposomal Nanosystems in Rheumatoid Arthritis. Pharmaceutics 2021; 13:pharmaceutics13040454. [PMID: 33801603 PMCID: PMC8065723 DOI: 10.3390/pharmaceutics13040454] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/19/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that affects the joints and results in reduced patient quality of life due to its chronic nature and several comorbidities. RA is also associated with a high socioeconomic burden. Currently, several available therapies minimize symptoms and prevent disease progression. However, more effective treatments are needed due to current therapies' severe side-effects, especially under long-term use. Drug delivery systems have demonstrated their clinical importance-with several nanocarriers present in the market-due to their capacity to improve therapeutic drug index, for instance, by enabling passive or active targeting. The first to achieve market authorization were liposomes that still represent a considerable part of approved delivery systems. In this manuscript, we review the role of liposomes in RA treatment, address preclinical studies and clinical trials, and discuss factors that could hamper a successful clinical translation. We also suggest some alterations that could potentially improve their progression to the market.
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Affiliation(s)
- Margarida Ferreira-Silva
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal; (M.F.-S.); (C.F.-S.)
| | - Catarina Faria-Silva
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal; (M.F.-S.); (C.F.-S.)
| | - Pedro Viana Baptista
- Unidade de Ciências Biomoleculares Aplicadas UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal;
| | - Eduarda Fernandes
- Associated Laboratory for Green Chemistry of the Network of Chemistry and Technology (LAQV, REQUIMTE), Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal;
| | - Alexandra Ramos Fernandes
- Unidade de Ciências Biomoleculares Aplicadas UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal;
- Correspondence: (A.R.F.); (M.L.C.)
| | - Maria Luísa Corvo
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal; (M.F.-S.); (C.F.-S.)
- Correspondence: (A.R.F.); (M.L.C.)
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11
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Ferreira-Silva M, Faria-Silva C, Baptista PV, Fernandes E, Fernandes AR, Corvo ML. Drug delivery nanosystems targeted to hepatic ischemia and reperfusion injury. Drug Deliv Transl Res 2021; 11:397-410. [PMID: 33660214 DOI: 10.1007/s13346-021-00915-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2021] [Indexed: 02/07/2023]
Abstract
Hepatic ischemia and reperfusion injury (IRI) is an acute inflammatory process that results from surgical interventions, such as liver resection surgery or transplantation, or hemorrhagic shock. This pathology has become a severe clinical issue, due to the increasing incidence of hepatic cancer and the high number of liver transplants. So far, an effective treatment has not been implemented in the clinic. Despite its importance, hepatic IRI has not attracted much interest as an inflammatory disease, and only a few reviews addressed it from a therapeutic perspective with drug delivery nanosystems. In the last decades, drug delivery nanosystems have proved to be a major asset in therapy because of their ability to optimize drug delivery, either by passive or active targeting. Passive targeting is achieved through the enhanced permeability and retention (EPR) effect, a main feature in inflammation that allows the accumulation of the nanocarriers in inflammation sites, enabling a higher efficacy of treatment than conventional therapies. These systems also can be actively targeted to specific compounds, such as inflammatory markers and overexpressed receptors in immune system intermediaries, allowing an even more specialized therapy that have already showed encouraging results. In this manuscript, we review drug delivery nanosystems designed for hepatic IRI treatment, addressing their current state in clinical trials, discussing the main hurdles that hinder their successful translation to the market and providing some suggestions that could potentially advance their clinical translation.
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Affiliation(s)
- Margarida Ferreira-Silva
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - Catarina Faria-Silva
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - Pedro Viana Baptista
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Eduarda Fernandes
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Alexandra Ramos Fernandes
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Maria Luísa Corvo
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal.
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12
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Boix F, Legaz I, Minhas A, Alfaro R, Jiménez–Coll V, Mrowiec A, Martínez–Banaclocha H, Galián JA, Botella C, Moya–Quiles MR, Sanchez–Bueno F, Robles R, de la Peña–Moral J, Ramirez P, Pons JA, Minguela A, Muro M. Identification of peripheral CD154 + T cells and HLA-DRB1 as biomarkers of acute cellular rejection in adult liver transplant recipients. Clin Exp Immunol 2021; 203:315-328. [PMID: 33025622 PMCID: PMC7806417 DOI: 10.1111/cei.13533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/29/2020] [Accepted: 09/29/2020] [Indexed: 12/16/2022] Open
Abstract
Decreasing graft rejection and increasing graft and patient survival are great challenges facing liver transplantation (LT). Different T cell subsets participate in the acute cellular rejection (ACR) of the allograft. Cell-mediated immunity markers of the recipient could help to understand the mechanisms underlying acute rejection. This study aimed to analyse different surface antigens on T cells in a cohort of adult liver patients undergoing LT to determine the influence on ACR using multi-parametric flow cytometry functional assay. Thirty patients were monitored at baseline and during 1 year post-transplant. Two groups were established, with (ACR) and without (NACR) acute cellular rejection. Leukocyte, total lymphocyte, percentages of CD4+ CD154+ and CD8+ CD154+ T cells, human leukocyte antigen (HLA) mismatch between recipient-donor and their relation with ACR as well as the acute rejection frequencies were analysed. T cells were stimulated with concanavalin A (Con-A) and surface antigens were analysed by fluorescence activated cell sorter (FACS) analysis. A high percentage of CD4+ CD154+ T cells (P = 0·001) and a low percentage of CD8+ CD154+ T cells (P = 0·002) at baseline were statistically significant in ACR. A receiver operating characteristic analysis determined the cut-off values capable to stratify patients at high risk of ACR with high sensitivity and specificity for CD4+ CD154+ (P = 0·001) and CD8+ CD154+ T cells (P = 0·002). In logistic regression analysis, CD4+ CD154+ , CD8+ CD154+ and HLA mismatch were confirmed as independent risk factors to ACR. Post-transplant percentages of both T cell subsets were significantly higher in ACR, despite variations compared to pretransplant. These findings support the selection of candidates for LT based on the pretransplant percentages of CD4+ CD154+ and CD8+ CD154+ T cells in parallel with other transplant factors.
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Affiliation(s)
- F. Boix
- Haematology ServiceUniversity Hospital of SalamancaResearch Biomedical Institute of Salamanca (IBSAL)SalamancaSpain
| | - I. Legaz
- Department of Legal and Forensic MedicineFaculty of MedicineBiomedical Research Institute of Murcia (IMIB)Regional Campus of International Excellence ‘Campus Mare Nostrum’University of MurciaMurciaSpain
| | - A. Minhas
- Clinical Transplantation LaboratoryBarts Health NHS TrustLondonUK
| | - R. Alfaro
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - V. Jiménez–Coll
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - A. Mrowiec
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - H. Martínez–Banaclocha
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. A. Galián
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - C. Botella
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - M. R. Moya–Quiles
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - F. Sanchez–Bueno
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - R. Robles
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. de la Peña–Moral
- PathologyUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - P. Ramirez
- SurgeryUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - J. A. Pons
- Digestive Medicine ServicesUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - A. Minguela
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
| | - M. Muro
- Immunology ServiceUniversity Clinical Hospital Virgen de la Arrixaca–Biomedical Research Institute of Murcia (IMIB)MurciaSpain
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13
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Choudhary NS, Saraf N, Saigal S, Soin AS. Long-term Management of the Adult Liver Transplantation Recipients. J Clin Exp Hepatol 2021; 11:239-253. [PMID: 33746450 PMCID: PMC7953009 DOI: 10.1016/j.jceh.2020.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/14/2020] [Indexed: 12/12/2022] Open
Abstract
The survival of liver transplantation (LT) recipients has been improved remarkably in short-term. The major causes of mortality in long-term include nonimmunological causes such as cardiovascular, de novo malignancy, chronic kidney disease, and recurrence of primary disease. Rejection-related mortality is rare in the long-term after LT. We discuss nonrejection causes of long-term morbidity/mortality, risk factors, and management strategies in LT recipients. In addition, we discuss osteoporosis, contraception, and pregnancy in LT recipients.
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Key Words
- AIH, autoimmune hepatitis
- BMI, body mass index
- CKD, chronic kidney disease
- CNI, calcineurin inhibitors
- CVD, cardiovascular disease
- DDLT, deceased donor liver transplantation
- DM, diabetes mellitus
- DNM, de novo malignancy
- HCV, hepatitis C virus
- HR, hazard ratio
- IUCD, Intrauterine contraceptive devices
- LDLT, living donor liver transplantation
- LT, liver transplantation
- MDRD, Modification of Diet in Renal Disease
- MMF, mycophenolate
- MS, metabolic syndrome
- NAFLD, nonalcoholic fatty liver disease
- NASH, nonalcoholic steatohepatitis
- OR, odds ratio
- PBC, primary biliary cholangitis
- PSC, primary sclerosing cholangitis
- PTDM, posttransplantation diabetes mellitus
- PTMS, posttransplantation metabolic syndrome
- SVR, sustained virological response
- cardiovascular disease
- de novo malignancy
- eGFR, estimated glomerular filtration rate
- mTORi, Mammalian target of rapamycin inhibitors
- osteoporosis
- pregnancy
- recurrence
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Affiliation(s)
| | - Neeraj Saraf
- Address for correspondence: Dr Neeraj Saraf, Medanta Institute of Liver Transplantation and Regenerative Medicine, Medanta The Medicity Hospital, Sector 38, Gurgaon, Delhi (NCR), India.
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14
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Target-oriented delivery of self-assembled immunosuppressant cocktails prolongs allogeneic orthotopic liver transplant survival. J Control Release 2020; 328:237-250. [DOI: 10.1016/j.jconrel.2020.08.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/15/2020] [Accepted: 08/22/2020] [Indexed: 12/26/2022]
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15
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Koc C, Akbulut S, Yilmaz S. Comparison of Standard and Modified Standard Organ Procurement Techniques for Deceased Donors. EXP CLIN TRANSPLANT 2020; 18:791-795. [PMID: 30398097 DOI: 10.6002/ect.2018.0022] [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: 02/07/2023]
Abstract
OBJECTIVES This study aimed to compare the impact of deceased-donor organ procurement techniques (standard versus modified standard) on biochemical outcomes after liver transplant. MATERIALS AND METHODS From February 2006 to December 2013, organs were recovered from 105 consecutive deceased donors by our transplant team. All organ procurement procedures were performed by a pioneer surgeon experienced in organ recovery from deceased donors. Donors were divided into those who had the abdominothoracic approach, which is referred to as the standard technique, and those who had the abdominal approach, which is referred to as the modified standard technique. Both groups were compared in terms of age, sex, weight, height, body mass index, liver graft weight, cross-clamping time, cold ischemia time, and liver function tests in recipients over the first 3 postoperative days. RESULTS Our study group included 66 male and 39 female donors, with an age range of 1 to 93 years (median of 44 y, means ± standard deviation of 43.8 ± 23.7 y). Among the deceased donors, 73 underwent the modified standard technique and 32 underwent the standard technique. There were no statistically significant differences between groups in terms of age, sex, weight, height, body mass index, graft weight, cold ischemia time, and liver function tests in recipients over the first 3 postoperative days. We observed a statistically significant difference between groups in terms of cross-clamping time (P < .001). CONCLUSIONS Except for the decreased cross-clamping time, the modified standard technique for deceased organ retrieval had no effect on clinical outcomes in recipients after liver transplant. However, this retrospective study requires additional prospective investigations to more fully understand the differences.
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Affiliation(s)
- Cemalettin Koc
- From the Department of Surgery and Liver Transplant Institute, Inonu University Faculty of Medicine, Malatya, Turkey
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16
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Immunosuppressive regimens for adult liver transplant recipients in real-life practice: consensus recommendations from an Italian Working Group. Hepatol Int 2020; 14:930-943. [PMID: 33099753 PMCID: PMC7803715 DOI: 10.1007/s12072-020-10091-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/06/2020] [Indexed: 02/07/2023]
Abstract
It is a well-recognized fact that implementing new guidelines in clinical practice may be difficult; therefore the Italian Society for Organ and Tissue Transplantation (SITO) set out to define practical immunosuppression tools for the management of liver transplantation patients. In 2017, an Italian Working Group of liver transplant experts and hepatologists issued a set of consensus statements along with evidence-based recommendations on the use of everolimus after liver transplantation. This article presents the evidence- and consensus-based algorithms developed within the Italian Working Group, which are aimed towards guiding clinicians in the selection of immunosuppressive regimens for the management of adult liver transplant recipients in real-life practice. The liver transplant recipient population, typically managed in clinical practice, was divided into the following categories: (1) standard patients; (2) critically ill patients; (3) patients with a specific etiology; (4) patients with hepatocellular carcinoma; (5) and patients with de novo malignancies. The algorithms are divided into two parts, according to the time from transplantation (0-3 months and > 3 months) and are discussed here along with relevant supporting literature, when available. Ultimately, it is hoped that the evidence- and consensus-based algorithms developed within the Italian Working Group, and presented here, contribute to simplify, personalize, and optimize immunosuppression of liver transplantation recipients in clinical practice.
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17
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Higher Concentrations of Cyclosporine Metabolites in Liver Transplant Recipients With a History of Viral and Bacterial Infections. Transplant Proc 2020; 52:2503-2506. [PMID: 32493678 DOI: 10.1016/j.transproceed.2020.03.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/08/2020] [Accepted: 03/30/2020] [Indexed: 11/23/2022]
Abstract
BACKGROUND Infection remains a serious clinical problem in liver transplant (LTX) recipients. A higher risk of infection is connected with immunosuppression therapy. The aim of the study was to assess the relationships between infections' incidence and concentrations of cyclosporine (CsA) metabolites after LTX. METHODS Forty-three liver transplant recipients receiving CsA were included in the study. With the use of liquid chromatography combined with tandem mass spectrometry, concentrations of CsA and its metabolites were measured: dihydroxylated cyclosporine metabolites (DiHCsA), trihydroxylated cyclosporine metabolites (TriHCsA), demethylcarboxylated cyclosporine metabolites (DemCarbCsA), AM1, AM9, and AM4N. The study protocol conformed with the Declaration of Helsinki. RESULTS Patients with a history of Epstein-Barr virus (EBV) infection had higher DiHCsA, TriHCsA, DemCarbCsA, AM1/CsA, DiHCsA/CsA, TriHCsA/CsA i DemCarbCsA/CsA in comparison with group without such infection (P = .049, P = .037, P = .006, P = .018, P = .005, P = .027, and P = .026, respectively). LTX recipients with a history of all viral infections had higher DiHCsA, TriHCsA, DiHCsA/CsA, TriHCsA/CsA than patients without viral infections (P = .013, P = .021, P = .013, and P = .048, respectively). Multivariable analysis showed that AM1, DiHCsA, TriHCsA, DemCarbCsA, AM4N/CsA had positively influence on the incidence of all viral infections (β = 0.0302, P = .0328; β = 0.0699, P = .0453; β = 0.6781, P = .0382; β = 0.6767, P = .0414; and β = 0.8307, P = .0267, respectively). In multivariable analysis, patients with a history of all bacterial infections had higher AM1 and higher AM1/CsA in comparison with LTX recipients without such infections (β = 0.0118, P = .0279; and β = 0.0099, P = .036, respectively). CONCLUSION In liver transplant recipients with a history of viral or bacterial infections higher concentrations of CsA metabolites were found. Possibly CsA metabolites could be used to assess the risk of infection in patients after liver transplantation. It should be confirmed in further investigations.
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18
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Goede LL, Pflugrad H, Schmitz B, Lanfermann H, Tryc AB, Barg-Hock H, Klempnauer J, Weissenborn K, Ding XQ. Quantitative magnetic resonance imaging indicates brain tissue alterations in patients after liver transplantation. PLoS One 2019; 14:e0222934. [PMID: 31553760 PMCID: PMC6760889 DOI: 10.1371/journal.pone.0222934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/10/2019] [Indexed: 12/28/2022] Open
Abstract
PURPOSE To investigate cerebral microstructural alterations in patients treated with calcineurin inhibitors (CNI) after orthotopic liver transplantation (OLT) using quantitative magnetic resonance imaging (qMRI) and a cross-sectional study design. METHODS Cerebral qMRI was performed in 85 patients in a median 10 years after OLT compared to 31 healthy controls. Patients were treated with different dosages of CNI or with a CNI-free immunosuppression (CNI-free: n = 19; CNI-low: n = 36; CNI-standard: n = 30). T2-, T2*- and T2'- relaxation times, as well as apparent diffusion coefficient (ADC) and fractional anisotropy (FA) were measured in brain gray and white matter by using the regions of interest method. RESULTS In comparison to controls, patients revealed significantly increased T2, T2*, T2', ADC and reduced FA, predominantly in the frontal white matter, indicating microstructural brain alterations represented by increased free water (increased T2), reduced neuronal metabolism (increased T2') and a lower degree of spatial organization of the nervous fibers (reduced FA). CNI-low and CNI-free patients showed more alterations than CNI-standard patients. Analysis of their history revealed impairment of kidney function while under standard CNI dose suggesting that these patients may be more vulnerable to toxic CNI side-effects. CONCLUSION Our findings suggest that the individual sensitivity to toxic side effects should be considered when choosing an appropriate immunosuppressive regimen in patients after liver transplantation.
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Affiliation(s)
- Lukas Laurids Goede
- Department of Neurology, Hannover Medical School, Hannover, Germany
- Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Centre Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Henning Pflugrad
- Department of Neurology, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Centre Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Birte Schmitz
- Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Heinrich Lanfermann
- Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Anita Blanka Tryc
- Department of Neurology, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Centre Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Hannelore Barg-Hock
- Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jürgen Klempnauer
- Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Karin Weissenborn
- Department of Neurology, Hannover Medical School, Hannover, Germany
- Integrated Research and Treatment Centre Transplantation (IFB-Tx), Hannover Medical School, Hannover, Germany
| | - Xiao-Qi Ding
- Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
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19
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Figueiredo C, Oldhafer F, Wittauer EM, Carvalho-Oliveira M, Akhdar A, Beetz O, Chen-Wacker C, Yuzefovych Y, Falk CS, Blasczyk R, Vondran FWR. Silencing of HLA class I on primary human hepatocytes as a novel strategy for reduction in alloreactivity. J Cell Mol Med 2019; 23:5705-5714. [PMID: 31180181 PMCID: PMC6653539 DOI: 10.1111/jcmm.14484] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/08/2019] [Accepted: 05/15/2019] [Indexed: 12/18/2022] Open
Abstract
In contrast to the whole liver, primary hepatocytes are highly immunogenic. Thus, alternative strategies of immunomodulation after hepatocyte transplantation are of special interest. Silencing of HLA class I expression is expected to reduce the strength of allogeneic immune responses and to improve graft survival. In this study, primary human hepatocytes (PHH) were isolated using a two-step-collagenase perfusion-technique and co-cultured with allogeneic lymphocytes in terms of a mixed lymphocyte hepatocyte culture. Expression of HLA class I on PHH was silenced using lentiviral vectors encoding for β2-microglobulin-specific short hairpin RNA (shβ2m) or non-specific shRNA (shNS) as control. The delivery of shβ2m into PHH caused a decrease by up to 96% in β2m transcript levels and a down-regulation of HLA class I cell surface expression on PHH by up to 57%. Proliferative T cell alloresponses against HLA-silenced PHH were significantly lower than those observed form fully HLA-expressing PHH. In addition, significantly lower secretion of pro-inflammatory cytokines was observed. Levels of albumin, urea and aspartate-aminotransferase did not differ in supernatants of cultured PHH. In conclusion, silencing HLA class I expression on PHH might represent a promising approach for immunomodulation in the transplant setting without compromising metabolic function of silenced hepatocytes.
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Affiliation(s)
- Constança Figueiredo
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,Excellence Cluster REBIRTH - From Regenerative Biology to Reconstructive Therapy, Hannover, Germany
| | - Felix Oldhafer
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Eva-Maria Wittauer
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Marco Carvalho-Oliveira
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,Excellence Cluster REBIRTH - From Regenerative Biology to Reconstructive Therapy, Hannover, Germany
| | - Ali Akhdar
- German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Hannover, Germany
| | - Oliver Beetz
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Chen Chen-Wacker
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,Excellence Cluster REBIRTH - From Regenerative Biology to Reconstructive Therapy, Hannover, Germany
| | - Yuliia Yuzefovych
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Christine S Falk
- German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Hannover, Germany.,Institute of Transplant Immunology, Hannover Medical School, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Florian W R Vondran
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany.,German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Hannover, Germany
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20
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Schmitz B, Pflugrad H, Tryc AB, Lanfermann H, Jäckel E, Schrem H, Beneke J, Barg-Hock H, Klempnauer J, Weissenborn K, Ding XQ. Brain metabolic alterations in patients with long-term calcineurin inhibitor therapy after liver transplantation. Aliment Pharmacol Ther 2019; 49:1431-1441. [PMID: 31006881 DOI: 10.1111/apt.15256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/24/2018] [Accepted: 03/20/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Calcineurin inhibitor (CNI) neurotoxicity after liver transplantation might be due to impairment of the cerebral metabolism. AIMS To investigate CNI-related alterations of brain metabolite distributions and associations between cognitive function and brain metabolism in patients with long-term CNI treatment after liver transplantation. METHODS Eighty-two patients (19 CNI free, 34 CNI low-dose and 29 standard-dose CNI immunosuppression) 10 years after liver transplantation and 32 adjusted healthy controls underwent nonlocalised brain phosphorus magnetic resonance spectroscopy (MRS) and single voxel proton MRS in the parietal white matter to estimate brain metabolite contents. The MRS results were correlated with psychometric data assessing cognitive function. RESULTS Phosphorus metabolite concentrations with the exception of phosphocreatine (PCr) were reduced in patients compared to controls. Particularly, patients with low-dose CNI therapy showed a significant decrease in adenosine triphosphate (0.209 ± 0.012 vs 0.222 ± 0.010; P < 0.001) and a significant increase in PCr (0.344 ± 0.026 vs 0.321 ± 0.017; P < 0.001) compared to controls. Myo-Inositol in the CNI free group (2.719 ± 0.549 institutional unit [iu]) was significantly lower compared to controls (3.181 ± 0.425 iu; P = 0.02), patients on low-dose (3.130 ± 0.513 iu; P < 0.05) and standard-dose CNI therapy (3.207 ± 0.632 iu; P < 0.02). Glutamate and glutamine levels correlated negatively with cognitive function (Repeatable Battery for the Assessment of Neuropsychological Status Total Scale: R = -0.362, P = 0.029). CONCLUSION Long-term CNI therapy after liver transplantation might be associated with alterations of brain metabolites.
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Affiliation(s)
- Birte Schmitz
- Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Henning Pflugrad
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Integrated Research and Treatment Centre Transplantation, Hannover Medical School, Hannover, Germany
| | - Anita B Tryc
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Integrated Research and Treatment Centre Transplantation, Hannover Medical School, Hannover, Germany
| | - Heinrich Lanfermann
- Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Elmar Jäckel
- Integrated Research and Treatment Centre Transplantation, Hannover Medical School, Hannover, Germany.,Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Harald Schrem
- Core Facility Quality Management and Health Technology Assessment in Transplantation, Hannover Medical School, Hannover, Germany.,Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jan Beneke
- Core Facility Quality Management and Health Technology Assessment in Transplantation, Hannover Medical School, Hannover, Germany
| | - Hannelore Barg-Hock
- Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jürgen Klempnauer
- Integrated Research and Treatment Centre Transplantation, Hannover Medical School, Hannover, Germany.,Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Karin Weissenborn
- Department of Neurology, Hannover Medical School, Hannover, Germany.,Integrated Research and Treatment Centre Transplantation, Hannover Medical School, Hannover, Germany
| | - Xiao-Qi Ding
- Department of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
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21
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Albekairy AM, Abdel-Razaq WS, Alkatheri AM, Debasi TMA, Otaibi NEA, Qandil AM. The impact of immunosuppressant therapy on the recurrence of hepatitis C post-liver transplantation. Int J Health Sci (Qassim) 2018; 12:78-87. [PMID: 30022908 PMCID: PMC6040860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The use of immunosuppressants to reduce the likelihood of acute graft rejections is a cornerstone in the post-transplantation management of recipients. However, these agents were always associated with increased risk of deleterious effects such as infections vulnerability and comorbidities. The objective of this review is to discuss the impact of different immunosuppression strategies used in liver transplant recipients (LTRs) on the recurrence of hepatitis C virus (HCV) infections after transplantation. Traditionally, corticosteroids were a mainstay in immunosuppressive regimens in LTRs. Several trials have suggested early tapering of corticosteroids or steroid-free immunosuppression protocols to minimize metabolic complications and other accompanied adverse events. However, there is no consistent agreement on the apparent benefit of steroid-avoidance regimens on HCV recurrence. At present, calcineurin inhibitors alone or in combination with other immunosuppressants are the standard regimen for immunosuppression in LTRs. Although the use of mycophenolate mofetil and sirolimus were sometimes associated with a significantly lower risk of liver injury as a result of HCV recurrence, they were associated with an increased risk of acute graft rejection compared to calcineurin inhibitors. Consequently, reducing the incidence of HCV recurrence in LTRs could be at the expense of other potential complications. The appropriate selection of adequate immunosuppression could diminish the associated increased risk of HCV recurrence after liver transplantation. However, further clinical studies are still pivotal to establish the appropriate/optimal immunosuppressive therapies for HCV-positive LTRs.
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Affiliation(s)
- Abdulkareem M. Albekairy
- Department of Pharmacy Practice, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh 11481, Saudi Arabia
- Department of Pharmaceutical Care, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Wesam S. Abdel-Razaq
- Department of Pharmaceutical sciences, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh 11481, Saudi Arabia
| | - Abdulmalik M. Alkatheri
- Department of Pharmacy Practice, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh 11481, Saudi Arabia
- Department of Pharmaceutical Care, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Tariq M. Al Debasi
- Division of Ophthalmology, King Abdulaziz Medical City, Riyadh, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Nouf E. Al Otaibi
- Department of Pharmaceutical Care, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11426, Saudi Arabia
| | - Amjad M. Qandil
- Department of Pharmaceutical sciences, College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh 11481, Saudi Arabia
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22
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The gastroenterologist's guide to management of the post-liver transplant patient. Am J Gastroenterol 2018; 113:819-828. [PMID: 29748558 DOI: 10.1038/s41395-018-0049-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/11/2018] [Indexed: 12/11/2022]
Abstract
The management of the post-liver transplant patient is complex and involves a large interdisciplinary team. After referral to a transplant center, evaluation and listing, and eventual transplantation, the patient is cared for closely by the transplant center. Once deemed ready for discharge, the patient returns to the primary care provider for ongoing management of the various issues that increase in incidence post transplant such as osteoporosis, cardiovascular, and renal diseases, as well as metabolic syndrome. The role of the gastroenterologist is not well defined, but certainly, he or she may be called upon for the initial evaluation and ongoing management of gastrointestinal as well as hepatobiliary issues. This includes but is not limited to the investigation of abnormal liver tests, non-specific gastrointestinal complaints such as nausea, vomiting, or diarrhea, biliary complications, and even recurrent hepatic disease. Having familiarity with post-transplant immunosuppressive agents, drug interactions, and potential infectious and malignancy-related complications of transplant is essential, as the primary gastroenterologist may be expected in some situations to field the initial work-up, if patient access to the transplant center is limited. The aim of this review is to summarize the gastroenterologist's role in the management of the post-liver transplant patient.
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Bajaj JS, Kakiyama G, Cox IJ, Nittono H, Takei H, White M, Fagan A, Gavis EA, Heuman DM, Gilles HC, Hylemon P, Taylor-Robinson SD, Legido-Quigley C, Kim M, Xu J, Williams R, Sikaroodi M, Pandak WM, Patrick MG. Alterations in gut microbial function following liver transplant. Liver Transpl 2018; 24:752-761. [PMID: 29500907 PMCID: PMC5992060 DOI: 10.1002/lt.25046] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/16/2018] [Accepted: 02/25/2018] [Indexed: 12/12/2022]
Abstract
Liver transplantation (LT) improves daily function and ameliorates gut microbial composition. However, the effect of LT on microbial functionality, which can be related to overall patient benefit, is unclear and could affect the post-LT course. The aims were to determine the effect of LT on gut microbial functionality focusing on endotoxemia, bile acid (BA), ammonia metabolism, and lipidomics. We enrolled outpatient patients with cirrhosis on the LT list and followed them until 6 months after LT. Microbiota composition (Shannon diversity and individual taxa) and function analysis (serum endotoxin, urinary metabolomics and serum lipidomics, and stool BA profile) and cognitive tests were performed at both visits. We enrolled 40 patients (age, 56 ± 7 years; mean Model for End-Stage Liver Disease score, 22.6). They received LT 6 ± 3 months after enrollment and were re-evaluated 7 ± 3 months after LT with a stable course. A significant improvement in cognition with increase in microbial diversity, increase in autochthonous and decrease in potentially pathogenic taxa, and reduced endotoxemia were seen after LT compared with baseline. Stool BAs increased significantly after LT, and there was evidence of greater bacterial action (higher secondary, oxo and iso-BAs) after LT although the levels of conjugated BAs remained similar. There was a reduced serum ammonia and corresponding rise in urinary phenylacetylglutamine after LT. There was an increase in urinary trimethylamine-N-oxide, which was correlated with specific changes in serum lipids related to cell membrane products. The ultimate post-LT lipidomic profile appeared beneficial compared with the profile before LT. In conclusion, LT improves gut microbiota diversity and dysbiosis, which is accompanied by favorable changes in gut microbial functionality corresponding to BAs, ammonia, endotoxemia, lipidomic, and metabolomic profiles. Liver Transplantation 24 752-761 2018 AASLD.
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Affiliation(s)
- Jasmohan S. Bajaj
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Genta Kakiyama
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - I. Jane Cox
- Institute of Hepatology, London, Foundation for Liver Research, London UK
| | | | - Hajime Takei
- Junshin Clinic Bile Acid Institute, Tokyo, Japan
| | - Melanie White
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Andrew Fagan
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Edith A. Gavis
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Douglas M. Heuman
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Ho Chong Gilles
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | - Phillip Hylemon
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
| | | | | | - Min Kim
- Faculty of Life Sciences & Medicine, Kings College, London, UK
| | - Jin Xu
- Faculty of Life Sciences & Medicine, Kings College, London, UK
| | - Roger Williams
- Institute of Hepatology, London, Foundation for Liver Research, London UK
| | | | - William M. Pandak
- Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, VA, USA
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Fairfield C, Penninga L, Powell J, Harrison EM, Wigmore SJ. Glucocorticosteroid-free versus glucocorticosteroid-containing immunosuppression for liver transplanted patients. Cochrane Database Syst Rev 2018; 4:CD007606. [PMID: 29630730 PMCID: PMC6494590 DOI: 10.1002/14651858.cd007606.pub4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Liver transplantation is an established treatment option for end-stage liver failure. Now that newer, more potent immunosuppressants have been developed, glucocorticosteroids may no longer be needed and their removal may prevent adverse effects. OBJECTIVES To assess the benefits and harms of glucocorticosteroid avoidance (excluding intra-operative use or treatment of acute rejection) or withdrawal versus glucocorticosteroid-containing immunosuppression following liver transplantation. SEARCH METHODS We searched the Cochrane Hepato-Biliary Group Controlled Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, Science Citation Index Expanded and Conference Proceedings Citation Index - Science, Literatura Americano e do Caribe em Ciencias da Saude (LILACS), World Health Organization International Clinical Trials Registry Platform, ClinicalTrials.gov, and The Transplant Library until May 2017. SELECTION CRITERIA Randomised clinical trials assessing glucocorticosteroid avoidance or withdrawal versus glucocorticosteroid-containing immunosuppression for liver transplanted people. Our inclusion criteria stated that participants should have received the same co-interventions. We included trials that assessed complete glucocorticosteroid avoidance (excluding intra-operative use or treatment of acute rejection) versus short-term glucocorticosteroids, as well as trials that assessed short-term glucocorticosteroids versus long-term glucocorticosteroids. DATA COLLECTION AND ANALYSIS We used RevMan to conduct meta-analyses, calculating risk ratio (RR) for dichotomous variables and mean difference (MD) for continuous variables, both with 95% confidence intervals (CIs). We used a random-effects model and a fixed-effect model and reported both results where a discrepancy existed; otherwise we reported only the results from the fixed-effect model. We assessed the risk of systematic errors using 'Risk of bias' domains. We controlled for random errors by performing Trial Sequential Analysis. We presented our results in a 'Summary of findings' table. MAIN RESULTS We included 17 completed randomised clinical trials, but only 16 studies with 1347 participants provided data for the meta-analyses. Ten of the 16 trials assessed complete postoperative glucocorticosteroid avoidance (excluding intra-operative use or treatment of acute rejection) versus short-term glucocorticosteroids (782 participants) and six trials assessed short-term glucocorticosteroids versus long-term glucocorticosteroids (565 participants). One additional study assessed complete post-operative glucocorticosteroid avoidance but could only be incorporated into qualitative analysis of the results due to limited data published in an abstract. All trials were at high risk of bias. Only eight trials reported on the type of donor used. Overall, we found no statistically significant difference for mortality (RR 1.15, 95% CI 0.93 to 1.44; low-quality evidence), graft loss including death (RR 1.15, 95% CI 0.90 to 1.46; low-quality evidence), or infection (RR 0.88, 95% CI 0.73 to 1.05; very low-quality evidence) when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression. Acute rejection and glucocorticosteroid-resistant rejection were statistically significantly more frequent when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression (RR 1.33, 95% CI 1.08 to 1.64; low-quality evidence; and RR 2.14, 95% CI 1.13 to 4.02; very low-quality evidence). Diabetes mellitus and hypertension were statistically significantly less frequent when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression (RR 0.81, 95% CI 0.66 to 0.99; low-quality evidence; and RR 0.76, 95% CI 0.65 to 0.90; low-quality evidence). We performed Trial Sequential Analysis for all outcomes. None of the outcomes crossed the monitoring boundaries or reached the required information size. Hence, we cannot exclude random errors from the results of the conventional meta-analyses. AUTHORS' CONCLUSIONS Many of the benefits and harms of glucocorticosteroid avoidance or withdrawal remain uncertain because of the limited number of published randomised clinical trials, limited numbers of participants and outcomes, and high risk of bias in the trials. Glucocorticosteroid avoidance or withdrawal appears to reduce diabetes mellitus and hypertension whilst increasing acute rejection, glucocorticosteroid-resistant rejection, and renal impairment. We could identify no other benefits or harms of glucocorticosteroid avoidance or withdrawal. Glucocorticosteroid avoidance or withdrawal may be of benefit in selected patients, especially those at low risk of rejection and high risk of hypertension or diabetes mellitus. The optimal duration of glucocorticosteroid administration remains unclear. More randomised clinical trials assessing glucocorticosteroid avoidance or withdrawal are needed. These should be large, high-quality trials that minimise the risk of random and systematic error.
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Affiliation(s)
- Cameron Fairfield
- Royal Infirmary Edinburgh ‐ NHS Lothian, Royal Infirmary EdinburghHepatobiliary‐Pancreatic Surgical Services and Edinburgh Transplant Unit51 Little France CrescentEdinburghMidlothianUKEH16 4SA
| | - Luit Penninga
- Rigshospitalet, Copenhagen University HospitalDepartment of Surgery and Transplantation C2122Blegdamsvej 9CopenhagenDenmarkDK‐2100
| | - James Powell
- NHS LothianScottish Liver Transplant UnitRoyal Infirmary of Edinburgh, 51 Little France CrescentEdinburghUKEH16 4SA
| | - Ewen M Harrison
- University of EdinburghClinical Surgery53 Little France CrescentEdinburghMidlothianUKEH16 4SA
| | - Stephen J Wigmore
- Royal Infirmary Edinburgh ‐ NHS Lothian, Royal Infirmary EdinburghHepatobiliary‐Pancreatic Surgical Services and Edinburgh Transplant Unit51 Little France CrescentEdinburghMidlothianUKEH16 4SA
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Hartono JL, Koh T, Lee GH, Tan PS, Muthiah M, Aw MM, Madhavan K, Kow A, Lim KB. Predictors of Non-adherence to Immunosuppressive Therapy in Asian Liver Transplant Recipients. Transplant Proc 2018; 49:1419-1424. [PMID: 28736016 DOI: 10.1016/j.transproceed.2017.02.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/23/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Adherence to immunosuppressive medications has been shown to affect post-transplant outcomes. We aimed to determine the level of adherence to immunosuppressive therapy in liver transplant (LT) recipients and to elucidate factors associated with it, as well as patient preferences on the dosing schedule. METHODS LT recipients were recruited during transplant clinic follow-up. A validated Morisky 8-item questionnaire was completed by patients to assess their adherence to immunosuppressive therapy. Adherence was determined by the sum of the responses to the questionnaire. Low, medium, and high adherence were defined by a Morisky score of >2, 1 to 2, and 0, respectively. Data on the patient's socio-economic and clinical background, dosing schedule of immunosuppressant medications, and patient preferences were included in the questionnaire. RESULTS A total of 107 LT recipients were approached and 75 completed the questionnaire. The majority of patients (48/74, 64.9%) preferred a once-daily medication regimen. The proportion of high adherence was 24/75 (32.0%), medium adherence was 51/75 (42.7%), and low adherence was 19/75 (25.3%). Multivariate analysis showed younger age and post-transplant duration >5 years as independent predictors for low adherence. Among low-adherence patients, 16/19 (84.2%) patients were on a twice-daily regimen, and, of these, 14/16 (87.5%) preferred their medications to be reduced to once daily. CONCLUSIONS A significant proportion (68%) of LT recipients had low to moderate adherence to medications, with younger age and longer post-transplant duration of >5 years as independent predictors. Early identification of at-risk patients is essential to allow implementation of measures to improve adherence. Simplifying medication regimens to once daily is a potential way to improve adherence.
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Affiliation(s)
- J L Hartono
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Gastroenterology and Hepatology, National University Health System, Singapore
| | - T Koh
- Department of Pharmacy, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - G H Lee
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Gastroenterology and Hepatology, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - P S Tan
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Gastroenterology and Hepatology, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - M Muthiah
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Gastroenterology and Hepatology, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - M M Aw
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Department of Pediatrics, Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore
| | - K Madhavan
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Hepatobiliary and Pancreatic Surgery, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - A Kow
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Hepatobiliary and Pancreatic Surgery, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore
| | - K B Lim
- Yong Yoo Lin School of Medicine, National University of Singapore, Singapore; Division of Gastroenterology and Hepatology, National University Health System, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore.
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Pflugrad H, Schrader AK, Tryc AB, Ding X, Lanfermann H, Jäckel E, Schrem H, Beneke J, Barg-Hock H, Klempnauer J, Weissenborn K. Longterm calcineurin inhibitor therapy and brain function in patients after liver transplantation. Liver Transpl 2018; 24:56-66. [PMID: 29156491 DOI: 10.1002/lt.24984] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/05/2017] [Accepted: 10/19/2017] [Indexed: 02/07/2023]
Abstract
Calcineurin inhibitors (CNIs) frequently induce neurological complications early after orthotopic liver transplantation (OLT). We hypothesize that longterm CNI therapy after OLT causes dose-dependent cognitive dysfunction and alteration of brain structure. In this study, 85 OLT patients (20 with CNI-free, 35 with CNI low-dose, and 30 with standard-dose CNI immunosuppression) underwent psychometric testing and cerebral magnetic resonance imaging approximately 10 years after OLT to assess brain function and structural brain alterations. A total of 33 healthy patients adjusted for age, sex, and education served as controls. Patients receiving CNI showed a significantly worse visuospatial/constructional ability compared with controls (P ≤ 0.04). Furthermore, patients on low-dose CNI therapy had an overall impaired cognitive function compared with controls (P = 0.01). The tacrolimus total dose and mean trough level were negatively correlated to cognitive function. CNI doses had been adjusted in 91% of the patients in the low-dose and CNI-free groups in the past due to CNI-induced kidney damage. Patients treated with CNI showed significantly more white matter hyperintensities (WMH) than patients on CNI-free immunosuppression and controls (P < 0.05). Both the mean cyclosporine A and tacrolimus trough levels correlated significantly with WMH. In conclusion, longterm CNI therapy carries a risk of cognitive dysfunction especially in patients who already showed nephrotoxic side effects indicating an increased susceptibility of these patients against toxic CNI effects. This subgroup of patients might benefit from a change to CNI-free immunosuppression. Liver Transplantation 24 56-66 2018 AASLD.
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Affiliation(s)
- Henning Pflugrad
- Departments of Neurology.,Integrated Research and Treatment Centre Transplantation
| | | | - Anita Blanka Tryc
- Departments of Neurology.,Integrated Research and Treatment Centre Transplantation
| | - Xiaoqi Ding
- Diagnostic and Interventional Neuroradiology
| | | | - Elmar Jäckel
- Gastroenterology, Hepatology and Endocrinology.,Integrated Research and Treatment Centre Transplantation
| | - Harald Schrem
- Core Facility Quality Management Transplantation.,Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jan Beneke
- Core Facility Quality Management Transplantation
| | - Hannelore Barg-Hock
- Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Jürgen Klempnauer
- Integrated Research and Treatment Centre Transplantation.,Clinic for Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Karin Weissenborn
- Departments of Neurology.,Integrated Research and Treatment Centre Transplantation
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Frey A, Piras-Straub K, Walker A, Timm J, Gerken G, Herzer K. The influence of immunosuppressants on direct-acting antiviral therapy is dependent on the hepatitis C virus genotype. Transpl Infect Dis 2017; 20. [PMID: 29111569 DOI: 10.1111/tid.12803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 07/05/2017] [Accepted: 07/13/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Direct-acting antivirals (DAAs) have substantially increased sustained virological response rates after liver transplantation, with improved tolerance compared to interferon-based therapy. The influence of immunosuppressive agents on the efficacy of DAAs has not been clarified. METHODS Subgenomic hepatitis C virus (HCV) replicons for genotype (GT) 1b, 2b, 3a, and 4a were treated with the mammalian target of rapamycin (mTOR) inhibitors everolimus and sirolimus or with the calcineurin inhibitors (CNIs) cyclosporine or tacrolimus, either alone or in combination with selected DAAs. Cell proliferation-related effects were excluded with MTT assays. HCV replication activity was quantified by quantitative real-time polymerase chain reaction or luciferase assay. RESULTS Addition of either mTOR inhibitor to the DAA daclatasvir (DAC) resulted in a 30% increase in antiviral activity compared to DAC alone for HCV GT2a, GT3a, and GT4a (all P ≤ .01). Similar results were obtained using sofosbuvir and ledipasvir. In contrast, addition of either mTOR inhibitor to DAC induced a 30% reduction in antiviral activity in GT1b cells (P ≤ .01 vs DAC alone). Neither CNI affects the antiviral activity of the DAAs in any HCV GT. CONCLUSION For patients with HCV GT2a, GT3a, or GT4a infection, mTOR-based immunosuppressive therapy may be beneficial. CNI-based therapy may be more efficacious in GT1b patients, as mTOR inhibitors seem to impair antiviral efficacy of DAAs in HCV GT1b infection.
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Affiliation(s)
- Alexandra Frey
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
| | - Katja Piras-Straub
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
| | - Andreas Walker
- Department of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Jörg Timm
- Department of Virology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Guido Gerken
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
| | - Kerstin Herzer
- Department of Gastroenterology and Hepatology, University Hospital Essen, Essen, Germany
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Impact of Antibodies That React With Liver Tissue and Donor-Specific Anti-HLA Antibodies in Pediatric Idiopathic Posttransplantation Hepatitis. Transplantation 2017; 101:1074-1083. [PMID: 28118175 PMCID: PMC5642348 DOI: 10.1097/tp.0000000000001653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background The cause of late graft dysfunction has not been elucidated. Although an antibody-mediated reaction is suspected as a potential mechanism, the target antigens have not been clarified. Methods To clarify the etiology of idiopathic posttransplantation hepatitis (IPTH), we simultaneously examined the presence of antibodies that react with liver tissue (ARLT) by means of indirect immunofluorescence staining, as well as the presence of donor-specific anti-human leukocyte antigen antibodies (HLA-DSA). A subanalysis of the IPTH group was also performed. Within the IPTH group, the correlation between ARLT titer and clinical data were analyzed. Results In the sera of patients with IPTH (30 patients), ARLT were found at a significantly higher frequency than in patients without IPTH (42 patients; P < 0.001). Moreover, the ARLT titer appeared to be correlated with the severity of hepatitis or hepatic injury. In contrast, the frequency of HLA-DSA was significantly lower in patients with IPTH than in patients without IPTH (P = 0.001). Conclusion Our findings indicate that ARLT, and not HLA-DSA, profoundly influence the etiology of IPTH. The authors show that antibodies that react with liver tissue and not donor-specific anti-human leukocyte antigen antibodies, profoundly influence the etiology of idiopathic posttransplantation hepatitis in children providing a rationale for therapy.
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Renal Function Improvement by Telbivudine in Liver Transplant Recipients with Chronic Kidney Disease. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9324310. [PMID: 28884132 PMCID: PMC5572574 DOI: 10.1155/2017/9324310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/29/2017] [Accepted: 07/09/2017] [Indexed: 12/12/2022]
Abstract
Chronic renal failure is a frequent complication in liver transplantation. Telbivudine, anti-hepatitis B virus (HBV) nucleoside, can improve renal function. It is interesting if using telbivudine for prophylaxis of HBV recurrence has additional value on renal function improvement. 120 liver transplant recipients with lamivudine prophylaxis for HBV recurrence were 1 : 1 randomized into lamivudine-continuous (n = 60) and telbivudine-replacement (n = 60) groups. Fifty-eight patients in lamivudine-continuous group and 54 in telbivudine-replacement group completed the study. In telbivudine-replacement group, the estimated glomerular filtration rate (eGRF) was improved from 63.0 ± 16.3 ml/min to 72.8 ± 21.1 ml/min at 12 months after telbivudine administration (p = 0.003). Stratifying the patients according to renal function staging, the eGRF was improved from 74.7 ± 6.9 ml/min to 84.2 ± 16.6 ml/min (p = 0.002) in 32 stage II patients and from 48.2 ± 7.3 ml/min to 59.7 ± 11.8 ml/min in 20 stage III patients after 12 months of telbivudine administration (p < 0.001). Eleven (18.3%) patients with telbivudine developed polyneuritis during the trial and post hoc following-up. In conclusion, renal function was improved by telbivudine in liver transplant recipients with long-term chronic kidney disease. However, the high incidence of polyneuritis induced by telbivudine has to be closely monitored. This trial is registered with ClinicalTrials NCT02447705.
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Bajaj JS, Fagan A, Sikaroodi M, White MB, Sterling RK, Gilles H, Heuman D, Stravitz RT, Matherly SC, Siddiqui MS, Puri P, Sanyal AJ, Luketic V, John B, Fuchs M, Ahluwalia V, Gillevet PM. Liver transplant modulates gut microbial dysbiosis and cognitive function in cirrhosis. Liver Transpl 2017; 23:907-914. [PMID: 28240840 DOI: 10.1002/lt.24754] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/09/2017] [Accepted: 02/13/2017] [Indexed: 12/14/2022]
Abstract
Liver transplantation (LT) improves daily function and cognition in patients with cirrhosis, but a subset of patients can remain impaired. Unfavorable microbiota or dysbiosis is observed in patients with cirrhosis, but the effect of LT on microbial composition, especially with poor post-LT cognition, is unclear. The aims were to determine the effect of LT on gut microbiota and to determine whether gut microbiota are associated with cognitive dysfunction after LT. We enrolled outpatient patients with cirrhosis on the LT list and followed them until 6 months after LT. Cognition (Psychometric Hepatic Encephalopathy score [PHES]), health-related quality of life (HRQOL), and stool microbiota (multitagged sequencing for diversity and taxa) tests were performed at both visits. Persistent cognitive impairment was defined as a stable/worsening PHES. Both pre-/post-LT data were compared with age-matched healthy controls. We enrolled 45 patients (56 ± 7 years, Model for End-Stage Liver Disease score 26 ± 8). They received LT 6 ± 3 months after enrollment and were re-evaluated 7 ± 2 months after LT with a stable course. A significantly improved HRQOL, PHES, with increase in microbial diversity, increase in autochthonous, and decrease in potentially pathogenic taxa were seen after LT compared with baseline. However, there was continued dysbiosis and HRQOL/cognitive impairment after LT compared with controls in 29% who did not improve PHES after LT. In these, Proteobacteria relative abundance was significantly higher and Firmicutes were lower after LT, whereas the reverse occurred in the group that improved. Delta PHES was negatively correlated with delta Proteobacteria and positively with delta Firmicutes. In conclusion, LT improves gut microbiota diversity and dysbiosis compared with pre-LT baseline but residual dysbiosis remains compared with controls. There is cognitive and HRQOL enhancement in general after LT, but a higher Proteobacteria relative abundance change is associated with posttransplant cognitive impairment. Liver Transplantation 23 907-914 2017 AASLD.
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Affiliation(s)
- Jasmohan S Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Andrew Fagan
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | | | - Melanie B White
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Richard K Sterling
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - HoChong Gilles
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Douglas Heuman
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Richard T Stravitz
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Scott C Matherly
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Mohammed S Siddiqui
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Puneet Puri
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Arun J Sanyal
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Velimir Luketic
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Binu John
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Michael Fuchs
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Vishwadeep Ahluwalia
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
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Postoperative Care of the Liver Transplant Recipient. ANESTHESIA AND PERIOPERATIVE CARE FOR ORGAN TRANSPLANTATION 2017. [PMCID: PMC7120127 DOI: 10.1007/978-1-4939-6377-5_29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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32
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Ho CM, Lee PH, Cheng WT, Hu RH, Wu YM, Ho MC. Succinct guide to liver transplantation for medical students. Ann Med Surg (Lond) 2016; 12:47-53. [PMID: 27895907 PMCID: PMC5121144 DOI: 10.1016/j.amsu.2016.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/11/2016] [Accepted: 11/11/2016] [Indexed: 02/07/2023] Open
Abstract
Literature on liver transplantation for use in medical education is limited and as yet unsatisfactory. The aim of this article is to help medical students gain enough insight into the reality of being a liver transplant recipient. This is crucial so in the future they can feel confident in approaching these patients with adequate knowledge and confidence. The knowledge-tree based learning core topics are designed for a 2-h class including indication/contraindication in the real-world setting, model for end stage liver disease scoring and organ allocation policy, liver transplantation for hepatic malignancy, transplantation surgery, immunosuppression strategy in practical consideration, and management of viral hepatitis. The rationales of each topic are discussed comprehensively for better understanding by medical students. Recipient candidates may have reversible contraindications that halt the surgery temporarily and therefore, it warrants re-evaluation before transplant. Organ allocation policy is primarily based on disease severity instead of waiting time. Transplant surgery usually involves resection of the whole liver, in situ implantation with reconstruction of the hepatic vein, the portal vein, the hepatic artery and the biliary duct in sequence. The primary goal of artificial immunosuppression is to prevent graft rejection, and the secondary one is to reduce its complication or side effects. Life-long oral nucleoside/nucleotide analogues against hepatitis virus B is needed while short course of direct acting agents against hepatitis viral C is enough to eradicate the virus. Basic understanding of the underlying rationales will help students prepare for advanced learning and cope with the recipients confidently in the future.
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Affiliation(s)
- Cheng-Maw Ho
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Po-Huang Lee
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
- College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Surgery, E-Da Hospital, I-Shou University, Taiwan
| | - Wing Tung Cheng
- Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Rey-Heng Hu
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Yao-Ming Wu
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Chih Ho
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
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Ahluwalia V, Wade JB, White MB, Gilles HS, Heuman DM, Fuchs M, Gavis EA, Fagan A, Tinsley F, Ganapathy D, Thacker LR, Sterling RK, Stravitz RT, Puri P, Sanyal AJ, Siddiqui MS, Matherly S, Luketic V, Steinberg J, Moeller FG, Bajaj JS. Liver transplantation significantly improves global functioning and cerebral processing. Liver Transpl 2016; 22:1379-90. [PMID: 27339647 PMCID: PMC5036999 DOI: 10.1002/lt.24498] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/01/2016] [Accepted: 06/13/2016] [Indexed: 01/13/2023]
Abstract
The functional basis of cognitive and quality of life changes after liver transplant is unclear. We aimed to evaluate the neurometabolic and functional brain changes as modulators of cognition and quality of life after transplant in patients with cirrhosis who were with/without pretransplant cognitive impairment and hepatic encephalopathy (HE). Patients with cirrhosis underwent detailed cognitive and quality of life assessment at enrollment and 6 months after transplant. A subset underwent brain magnetic resonance imaging (functional magnetic resonance imaging [fMRI], diffusion tensor imaging [DTI], and magnetic resonance spectroscopy [MRS]) before and after transplant. Changes before and after transplant were analyzed in all patients and by dividing groups in those with/without pretransplant cognitive impairment or with/without pretransplant HE. MRS evaluated ammonia-related metabolites; fMRI studied brain activation for correct lure inhibition on the inhibitory control test; and DTI studied white matter integrity. Sixty-six patients (mean Model for End-Stage Liver Disease score, 21.8; 38 HE patients and 24 cognitively impaired [CI] patients) were enrolled. Quality of life was significantly worse in CI and HE groups before transplant, which improved to a lesser extent in those with prior cognitive impairment. In the entire group after transplant, there was (1) significantly lower brain activation needed for lure inhibition (shown on fMRI); (2) reversal of pretransplant ammonia-associated changes (shown on MRS); and (3) improved white matter integrity (shown on DTI). Importantly, study findings suggest that pretransplant cognitive impairment serves as a marker for clinical outcomes. Regardless of pretransplant history of HE, it was the pretransplant cognitive impairment that was predictive of both posttransplant cognitive and psychosocial outcomes. Therefore, when working with patients and their families, a clinician may rely on the pretransplant cognitive profile to develop expectations regarding posttransplant neurobehavioral recovery. We conclude that functional brain changes after liver transplant depend on pretransplant cognitive impairment and are ultimately linked with posttransplant cognition and quality of life in cirrhosis. Liver Transplantation 22 1379-1390 2016 AASLD.
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Affiliation(s)
- Vishwadeep Ahluwalia
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - James B Wade
- Psychiatry, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Melanie B White
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - HoChong S Gilles
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Douglas M Heuman
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Michael Fuchs
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Edith A Gavis
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Andrew Fagan
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | | | - Dinesh Ganapathy
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Leroy R Thacker
- Biostatistics, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Richard K Sterling
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - R Todd Stravitz
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Puneet Puri
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Arun J Sanyal
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Muhammad S Siddiqui
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Scott Matherly
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Velimir Luketic
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Joel Steinberg
- Psychiatry, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - F Gerard Moeller
- Psychiatry, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
| | - Jasmohan S Bajaj
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA
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Perrella A, Esposito C, Amato G, Perrella O, Migliaccio C, Pisaniello D, Calise F, Cuomo O, Santaniello W. Antifungal prophylaxis with liposomal amphotericin B and caspofungin in high-risk patients after liver transplantation: impact on fungal infections and immune system. Infect Dis (Lond) 2016; 48:161-6. [PMID: 26513601 DOI: 10.3109/23744235.2015.1100322] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Antifungal prophylaxis may be required in high-risk patients undergoing liver transplantation and for that reason we aimed to verify its role and its related impact on the graft. From January 2006 throughout 2012, 250 liver transplants were evaluated and 54 patients identified as being at higher risk were randomly selected to undergo the following schedule: 28 patients received liposomal amphotericin B and 26 received caspofungin. We evaluated, throughout 12 months, renal and liver function tests, bacterial and fungal infection episodes, and intensive care unit (ICU) stay, as well as the Th1 and Th2 cytokine network. Differences were analyzed according to non-parametric tests (two-tailed p values). Neither of the groups showed episodes of invasive fungal infection during the 12 months follow-up; however, patients receiving prophylaxis with liposomal amphotericin B had reduced episodes of bacterial infections coupled with an improved immune system response compared with those receiving caspofungin. Finally, a reduced stay in the ICU was also observed. In conclusion, even if the results of liposomal amphotericin B and caspofungin prophylaxis strategies did not differ in terms of invasive fungal infection rate, patients receiving prophylaxis with liposomal amphotericin B had a reduced ICU stay and an improved Th2 status, as well as a reduced number of post-transplant bacterial infections. Further studies are required to better address and evaluate these findings.
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Affiliation(s)
- A Perrella
- a VII Department of Infectious Disease and Immunology , Hospital D. Cotugno .,b CLSE-Liver Transplant Unit , Hospital A. Cardarelli
| | - C Esposito
- d Liver Intensive Care Unit , AORN A. Cardarelli
| | - G Amato
- e Microbiology Laboratory , AORN, A. Cardarelli , Naples , Italy
| | - O Perrella
- a VII Department of Infectious Disease and Immunology , Hospital D. Cotugno
| | - C Migliaccio
- c CEB-Liver Transplant Unit , Hospital A. Cardarelli
| | - D Pisaniello
- b CLSE-Liver Transplant Unit , Hospital A. Cardarelli
| | - F Calise
- c CEB-Liver Transplant Unit , Hospital A. Cardarelli
| | - O Cuomo
- b CLSE-Liver Transplant Unit , Hospital A. Cardarelli
| | - W Santaniello
- c CEB-Liver Transplant Unit , Hospital A. Cardarelli
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Factors Associated With Changes in Body Composition Shortly After Orthotopic Liver Transplantation. Transplantation 2016; 100:1714-22. [DOI: 10.1097/tp.0000000000001202] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Cogliati B, Crespo Yanguas S, da Silva TC, Aloia TP, Nogueira MS, Real-Lima MA, Chaible LM, Sanches DS, Willebrords J, Maes M, Pereira IV, de Castro IA, Vinken M, Dagli ML. Connexin32 deficiency exacerbates carbon tetrachloride-induced hepatocellular injury and liver fibrosis in mice. Toxicol Mech Methods 2016; 26:362-370. [PMID: 27268753 PMCID: PMC5417356 DOI: 10.1080/15376516.2016.1190991] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Liver fibrosis results from the perpetuation of the normal wound healing response to several types of injury. Despite the wealth of knowledge regarding the involvement of intracellular and extracellular signaling pathways in liver fibrogenesis, information about the role of intercellular communication mediated by gap junctions is scarce. METHODS In this study, liver fibrosis was chemically induced by carbon tetrachloride in mice lacking connexin32, the major liver gap junction constituent. The manifestation of liver fibrosis was evaluated based on a series of read-outs, including collagen morphometric and mRNA analysis, oxidative stress, apoptotic, proliferative and inflammatory markers. RESULTS More pronounced liver damage and enhanced collagen deposition were observed in connexin32 knockout mice compared to wild-type animals in experimentally triggered induced liver fibrosis. No differences between both groups were noticed in apoptotic signaling nor in inflammation markers. However, connexin32 deficient mice displayed decreased catalase activity and increased malondialdehyde levels. CONCLUSION These findings could suggest that connexin32-based signaling mediates tissue resistance against liver damage by the modulation of the antioxidant capacity. In turn, this could point to a role for connexin32 signaling as a therapeutic target in the treatment of liver fibrosis.
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Affiliation(s)
- Bruno Cogliati
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Sara Crespo Yanguas
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Tereza C. da Silva
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Thiago P.A. Aloia
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Marina S. Nogueira
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Mirela A. Real-Lima
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Lucas M. Chaible
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Daniel S. Sanches
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Joost Willebrords
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Michaël Maes
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Isabel V.A. Pereira
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Inar A. de Castro
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Mathieu Vinken
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Maria L.Z. Dagli
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
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Ningappa M, Ashokkumar C, Higgs BW, Sun Q, Jaffe R, Mazariegos G, Li D, Weeks DE, Subramaniam S, Ferrell R, Hakonarson H, Sindhi R. Enhanced B Cell Alloantigen Presentation and Its Epigenetic Dysregulation in Liver Transplant Rejection. Am J Transplant 2016; 16:497-508. [PMID: 26663361 PMCID: PMC5082419 DOI: 10.1111/ajt.13509] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 07/30/2015] [Accepted: 08/20/2015] [Indexed: 01/25/2023]
Abstract
T cell suppression prevents acute cellular rejection but causes life-threatening infections and malignancies. Previously, liver transplant (LTx) rejection in children was associated with the single-nucleotide polymorphism (SNP) rs9296068 upstream of the HLA-DOA gene. HLA-DOA inhibits B cell presentation of antigen, a potentially novel antirejection drug target. Using archived samples from 122 white pediatric LTx patients (including 77 described previously), we confirmed the association between rs9296068 and LTx rejection (p = 0.001, odds ratio [OR] 2.55). Next-generation sequencing revealed that the putative transcription factor (CCCTC binding factor [CTCF]) binding SNP locus rs2395304, in linkage disequilibrium with rs9296068 (D' 0.578, r(2) = 0.4), is also associated with LTx rejection (p = 0.008, OR 2.34). Furthermore, LTx rejection is associated with enhanced B cell presentation of donor antigen relative to HLA-nonidentical antigen in a novel cell-based assay and with a downregulated HLA-DOA gene in a subset of these children. In lymphoblastoid B (Raji) cells, rs2395304 coimmunoprecipitates with CTCF, and CTCF knockdown with morpholino antisense oligonucleotides enhances alloantigen presentation and downregulates the HLA-DOA gene, reproducing observations made with HLA-DOA knockdown and clinical rejection. Alloantigen presentation is suppressed by inhibitors of methylation and histone deacetylation, reproducing observations made during resolution of rejection. Enhanced donor antigen presentation by B cells and its epigenetic dysregulation via the HLA-DOA gene represent novel opportunities for surveillance and treatment of transplant rejection.
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Affiliation(s)
- M Ningappa
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
| | - C Ashokkumar
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
| | - BW Higgs
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
| | - Q Sun
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
| | - R Jaffe
- Department of Pathology, University of Pittsburgh, Division of Pediatric Pathology, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, B255, Pittsburgh, PA 15224, USA
| | - G Mazariegos
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
| | - D Li
- Department of Bioengineering, University of California, San Diego, Powell-Focht Bioengineering Hall, Room 431, 9500 Gilman Drive MC 0412, La Jolla, CA 92093-0412 USA
| | - DE Weeks
- Department of Human Genetics, University of Pittsburgh, 130 DeSoto Street, Pittsburgh, PA 15261 USA
| | - S Subramaniam
- Department of Bioengineering, University of California, San Diego, Powell-Focht Bioengineering Hall, Room 431, 9500 Gilman Drive MC 0412, La Jolla, CA 92093-0412 USA
| | - R Ferrell
- Department of Human Genetics, University of Pittsburgh, 130 DeSoto Street, Pittsburgh, PA 15261 USA
| | - H Hakonarson
- Center for Applied Genomics, 1216 E. Abramson’s Research Center, ARC 1216E, Children’s Hospital of Philadelphia, 34 and Civic Center Blvd., Philadelphia, PA 19104 USA
| | - R Sindhi
- Hillman Center for Pediatric Transplantation, Thomas E Starzl Transplantation Institute, Children’s Hospital of Pittsburgh of the University of Pittsburgh Medical Center (UPMC), 4401 Penn Avenue, FP-6, Transplant, Room 6140, Mail Stop: CHL 03-06-02, Pittsburgh, PA 15224, USA
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Mahjub R, Allahyar R, Rafiee-Tehrani M, Dorkoosh FA. Preparation and characterization of nanoparticles composed of methylated N-(4-N,N-dimethyl aminobenzyl) chitosan for oral delivery of cyclosporine A. EUROPEAN JOURNAL OF NANOMEDICINE 2016. [DOI: 10.1515/ejnm-2015-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractCyclosporine is considered a highly lypophilic compound meaning low bioavailability through oral administration. In this study, cyclosporine was entrapped in a novel aromatic, quaternized derivative of chitosan (i.e. methylated N-(4-N,N-dimethyl aminobenzyl) chitosan) in order to improve solubility and bioavailability. Methylated N-(4,N,N-dimethyl aminobenzyl) chitosan was synthesized by the Schiff base reaction method. Polymeric nanoparticles containing cyclosporine was prepared and the physico-chemical properties of prepared nanoparticles were determined. The nanoparticles were studied morphologically using transmission electron microscopy (TEM). Finally, the release of cyclosporine from nanoparticles was studied in vitro using simulated intestinal fluid adjusted to pH of 6.8. For the preparation of nanoparticles, different formulations were studied and it was found that proper nanoparticles were prepared in equal concentration (1 mg/mL) of polymer and sodium tri-poly phosphate (TPP). The size, zeta potential, PdI, EE% and LE% of the prepared nanoparticles were reported as 173±36 nm, 23.1±4.18 mV, 0.243±0.05, 97.1±4.38% and 3.2±0.21%, respectively. The TEM images of nanoparticles revealed spherical to sub-spherical nanoparticles with no sign of agglomeration. This study suggests that preparations of nanoparticles composed of methylated N-(4,N,N-dimethyl aminobenzyl) chitosan can be a good candidate for improving the oral bioavailability of cyclosporine.
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Fairfield C, Penninga L, Powell J, Harrison EM, Wigmore SJ. Glucocorticosteroid-free versus glucocorticosteroid-containing immunosuppression for liver transplanted patients. Cochrane Database Syst Rev 2015:CD007606. [PMID: 26666504 DOI: 10.1002/14651858.cd007606.pub3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Liver transplantation is an established treatment option for end-stage liver failure. Now that newer, more potent immunosuppressants have been developed, glucocorticosteroids may no longer be needed and their removal may prevent adverse effects. OBJECTIVES To assess the benefits and harms of glucocorticosteroid avoidance (excluding intra-operative use) or withdrawal versus glucocorticosteroid-containing immunosuppression following liver transplantation. SEARCH METHODS We searched the Cochrane Hepato-Biliary Group Controlled Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, Science Citation Index Expanded and Social Sciences Citation Index, The Transplant Library, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) until September 2014. SELECTION CRITERIA Randomised clinical trials assessing glucocorticosteroid avoidance or withdrawal versus glucocorticosteroid-containing immunosuppression for liver-transplanted people. Our inclusion criteria stated that participants should have received the same co-interventions. We included trials that assessed complete glucocorticosteroid avoidance (excluding the perioperative period and excluding the occurrence of acute rejection) versus short-term glucocorticosteroids, as well as trials that assessed short-term glucocorticosteroids versus long-term glucocorticosteroids. DATA COLLECTION AND ANALYSIS We used RevMan to conduct meta-analyses, calculating risk ratio (RR) for dichotomous variables and mean difference (MD) for continuous variables, both with 95% confidence intervals (CIs). We used a random-effects model and a fixed-effect model and reported both results where a discrepancy existed. We assessed the risk of systematic errors using risk of bias domains. We controlled for random errors by performing Trial Sequential Analysis. We presented our results in a 'Summary of findings' table. MAIN RESULTS We included 16 completed randomised clinical trials with a total of 1347 participants. We found 10 trials that assessed complete postoperative glucocorticosteroid avoidance (excluding intra-operative use and treatment of rejection) versus short-term glucocorticosteroids (782 participants) and six trials that assessed short-term glucocorticosteroids versus long-term glucocorticosteroids (565 participants). We found one ongoing trial assessing complete postoperative glucocorticosteroid avoidance versus short-term glucocorticosteroids, which is expected to enrol 300 participants. All trials were at high risk of bias. Overall, we found no statistically significant difference for mortality (RR 1.15, 95% CI 0.93 to 1.44; low-quality evidence), graft loss including death (RR 1.16, 95% CI 0.91 to 1.48; low-quality evidence), or infection (RR 0.88, 95% CI 0.73 to 1.05; low-quality evidence) when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression. Acute rejection and glucocorticosteroid-resistant rejection were statistically significantly more frequent when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression (RR 1.33, 95% CI 1.08 to 1.64; moderate-quality evidence; and RR 2.14, 95% CI 1.13 to 4.02; very low-quality evidence). Diabetes mellitus and hypertension were statistically significantly less frequent when glucocorticosteroid avoidance or withdrawal was compared with glucocorticosteroid-containing immunosuppression (RR 0.81, 95% CI 0.66 to 0.99; low-quality evidence; and RR 0.76, 95% CI 0.65 to 0.90; low-quality evidence). We performed Trial Sequential Analysis for all outcomes. None of the outcomes crossed the monitoring boundaries or reached the required information size. Hence, we cannot exclude random errors from the results of the conventional meta-analyses. AUTHORS' CONCLUSIONS Many of the benefits and harms of glucocorticosteroid avoidance or withdrawal remain uncertain because of the limited number of published randomised clinical trials, limited numbers of participants and outcomes, and high risk of bias in the trials. Glucocorticosteroid avoidance or withdrawal appears to reduce diabetes mellitus and hypertension whilst increasing acute rejection, glucocorticosteroid-resistant rejection, and renal impairment. We could identify no other benefits or harms of glucocorticosteroid avoidance or withdrawal. Glucocorticosteroid avoidance or withdrawal may be of benefit in selected patients, especially those at low risk of rejection and high risk of hypertension or diabetes mellitus. The optimal duration of glucocorticosteroid administration remains unclear. More randomised clinical trials assessing glucocorticosteroid avoidance or withdrawal are needed. These should be large, high-quality trials that minimise the risk of random and systematic error.
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Affiliation(s)
- Cameron Fairfield
- Hepatobiliary-Pancreatic Surgical Services and Edinburgh Transplant Unit, Royal Infirmary Edinburgh - NHS Lothian, Royal Infirmary Edinburgh, 51 Little France Crescent, Edinburgh, Midlothian, UK, EH16 4SA
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Benzing C, Krezdorn N, Förster J, Hinz A, Atanasov G, Wiltberger G, Morgül MH, Lange UG, Schmelzle M, Hau HM, Bartels M. Impact of different immunosuppressive regimens on the health-related quality of life following orthotopic liver transplantation. Clin Transplant 2015; 29:1081-9. [PMID: 26358681 DOI: 10.1111/ctr.12631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND The influence of immunosuppression on the recipients' quality of life (QoL) is of major importance after OLT and has not yet been evaluated. METHODS The impact of different immunosuppression regimens after OLT was evaluated in 275 patients using the Short Form 36 (SF-36) survey. The following immunosuppressive strategies were compared: (a) CNI, (b) mTOR inhibitors, and (c) mTOR combined with CNI. All regimens were prescribed alone (mono) or in combination (+) with prednisolone and/or mycophenolate mofetil (MMF). RESULTS Highest scores were evident in patients in the mTOR+ group. There were significantly higher values for general health perceptions (GH, p = 0.049), vitality (VIT, p = 0.020), and physical component summary (PCS, p = 0.041) when compared to CNImono and for GH (p = 0.042) and VIT (p = 0.043), when compared to mTORmono. Early conversion to mTOR inhibitors (<two months after OLT) was associated with higher values for 7 of 10 scales, when compared to a late conversion (>two months after OLT), with a statistically significant improvement for the dimension role-emotional (RE, p = 0.027). DISCUSSION mTOR inhibitor-based regimens appear to have beneficial effects on QoL after OLT, especially after an early conversion.
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Affiliation(s)
- Christian Benzing
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Nicco Krezdorn
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover, Germany
| | - Julia Förster
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Andreas Hinz
- Department of Medical Psychology and Medical Sociology, University Hospital of Leipzig, Leipzig, Germany
| | - Georgi Atanasov
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Georg Wiltberger
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Mehmet H Morgül
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Undine G Lange
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Moritz Schmelzle
- Department of General, Visceral and Transplant Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Hans-Michael Hau
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Michael Bartels
- Department of Visceral, Thoracic, Transplant and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
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Ng WY, Yeo CP. Clinical laboratory diagnostics of immunosuppressants: One laboratory’s journey. PROCEEDINGS OF SINGAPORE HEALTHCARE 2015. [DOI: 10.1177/2010105815611807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Laboratory support for the organ transplant patient is the provision of the best testing technology for a specific and accurate determination of immunosuppressive drug level. This translates to better management with the therapeutic cocktail of immunosuppressive drugs used with a lesser incidence of organ rejection and side effects. Over the years, development of automated immunoassay/chemistry test platforms with standardization of test protocols has demonstrated great improvements. The present clinical laboratory services with tandem mass spectrometry in our hospital present more precise and specific therapeutic drug monitoring so necessary still for the patient. This article follows the evolving testing technologies over the years for immunosuppressive drug monitoring following the organ transplants programme (renal in general) in Singapore General Hospital.
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Affiliation(s)
- Wai Yoong Ng
- Department of Pathology, Singapore General Hospital, Singapore
| | - Chin Pin Yeo
- Department of Pathology, Singapore General Hospital, Singapore
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Capela T, Tavares I, Pereira P, Vigia E, Perdigoto R, Barroso E, Marcelino P. Is there a relationship between intraoperative hemodynamic instability and calcineurin inhibitor-related toxicity, early after liver transplantation? A single-center observational study. Transplant Proc 2015; 46:1789-93. [PMID: 25131038 DOI: 10.1016/j.transproceed.2014.05.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This study evaluated the relationship between intraoperative hemodynamic instability (IOHI) and the development of calcineurin inhibitor (CNI) toxicity in the early postoperative period after liver transplantation (LT). Eighty-two patients were enrolled during a 1-year period and a 3-month follow-up. IOHI, requiring continuous infusion of vasopressors, was observed in 31 patients (38%, group 1; control group 2, n = 51). Acute kidney injury (AKI) developed in 28 patients (52% in group 1 vs 24% in group 2, P = .02), and CNI-related neurotoxicity (CNI-NT) in 26 (48% in group 1 vs 22% in group 2, P = .03). Group 1 patients received mainly deceased donor grafts (87% vs 57% in group 2, P < .001). An independent association between IOHI and CNI-NT (P = .029) and AKI (P = .016) was observed. The receiver-operator characteristic curve revealed an area under the curve of 0.63 for IHI (sensitivity 56%; specificity 75%) and 0.65 for AKI (sensitivity 56%; specificity 70.2%). In conclusion, patients undergoing LT with IOHI may be more prone to developing CNI-NT and AKI in the early postoperative period.
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Affiliation(s)
- T Capela
- Liver Transplantation Unit, Hospital Curry Cabral, Lisbon, Portugal
| | - I Tavares
- Liver Transplantation Unit, Hospital Curry Cabral, Lisbon, Portugal
| | - P Pereira
- CEDOC, Faculdade de Ciências Médicas, Lisbon, Portugal
| | - E Vigia
- CEDOC, Faculdade de Ciências Médicas, Lisbon, Portugal
| | - R Perdigoto
- CEDOC, Faculdade de Ciências Médicas, Lisbon, Portugal
| | - E Barroso
- CEDOC, Faculdade de Ciências Médicas, Lisbon, Portugal
| | - P Marcelino
- Liver Transplantation Unit, Hospital Curry Cabral, Lisbon, Portugal.
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Lee JS, Bukhari SNA, Fauzi NM. Effects of chalcone derivatives on players of the immune system. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:4761-78. [PMID: 26316713 PMCID: PMC4548720 DOI: 10.2147/dddt.s86242] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The immune system is the defense mechanism in living organisms that protects against the invasion of foreign materials, microorganisms, and pathogens. It involves multiple organs and tissues in human body, such as lymph nodes, spleen, and mucosa-associated lymphoid tissues. However, the execution of immune activities depends on a number of specific cell types, such as B cells, T cells, macrophages, and granulocytes, which provide various immune responses against pathogens. In addition to normal physiological functions, abnormal proliferation, migration, and differentiation of these cells (in response to various chemical stimuli produced by invading pathogens) have been associated with several pathological disorders. The unwanted conditions related to these cells have made them prominent targets in the development of new therapeutic interventions against various pathological implications, such as atherosclerosis and autoimmune diseases. Chalcone derivatives exhibit a broad spectrum of pharmacological activities, such as immunomodulation, as well as anti-inflammatory, anticancer, antiviral, and antimicrobial properties. Many studies have been conducted to determine their inhibitory or stimulatory activities in immune cells, and the findings are of significance to provide a new direction for subsequent research. This review highlights the effects of chalcone derivatives in different types of immune cells.
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Affiliation(s)
- Jian Sian Lee
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Syed Nasir Abbas Bukhari
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Norsyahida Mohd Fauzi
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Boix-Giner F, Millan O, San Segundo D, Muñoz-Cacho P, Mancebo E, Llorente S, Rafael-Valdivia L, Rimola A, Fábrega E, Mrowiec A, Allende L, Minguela A, Bolarín JM, Paz-Artal E, López-Hoyos M, Brunet M, Muro M. High frequency of central memory regulatory T cells allows detection of liver recipients at risk of early acute rejection within the first month after transplantation. Int Immunol 2015; 28:55-64. [PMID: 26270267 DOI: 10.1093/intimm/dxv048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/06/2015] [Indexed: 02/06/2023] Open
Abstract
Several studies have analyzed the potential of T regulatory cells (Treg cells) as biomarkers of acute rejection (AR). The aim of the present multicenter study was to correlate the percentage of peripheral Treg cells in liver graft recipients drawn at baseline up to 12 months after transplantation with the presence of AR. The percentage of central memory (cm) Treg cells (CD4(+)CD25(high)CD45RO(+)CD62L(+)) was monitored at pre-transplant and at 1 and 2 weeks, and 1, 2, 3 and 6 months and 1 year post-transplantation. The same validation standard operating procedures were used in all participating centers. Fifteen patients developed AR (23.4%). Hepatitis C virus recurrence was observed in 16 recipients, who displayed low peripheral blood cmTreg levels compared with patients who did not. A steady increase of cmTregs was observed during the first month after transplantation with statistically significant differences between AR and non-AR patients. The high frequency of memory Treg cells allowed us to monitor rejection episodes during the first month post-transplantation. On the basis of these data, we developed a prediction model for assessing risk of AR that can provide clinicians with useful information for managing patients individually and customizing immunosuppressive therapies.
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Affiliation(s)
- Francisco Boix-Giner
- Servicio de Inmunología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB, Murcia, Spain
| | - Olga Millan
- Farmacología y Toxicología, Centro de Diagnóstico Biomédico, IDIBAPS, Hospital Clínico, Universidad de Barcelona, Barcelona, Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - David San Segundo
- Servicio de Inmunología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Pedro Muñoz-Cacho
- Servicio de Epidemiologia, Gerencia de Atención Primaria-IFIMAV, Santander, Spain
| | - Esther Mancebo
- Servicio de Inmunología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Santiago Llorente
- Servicio de Nefrologia, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | | | - Antoni Rimola
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain Unidad de Hígado, Hospital Clínico, IDIBAPS, Barcelona, Spain
| | - Emilio Fábrega
- Servicio de Aparato Digestivo, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Anna Mrowiec
- Servicio de Inmunología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB, Murcia, Spain
| | - Luis Allende
- Servicio de Inmunología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Alfredo Minguela
- Servicio de Inmunología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB, Murcia, Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - Jose M Bolarín
- Servicio de Inmunología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB, Murcia, Spain
| | - Estela Paz-Artal
- Servicio de Inmunología, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Marcos López-Hoyos
- Servicio de Inmunología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Mercé Brunet
- Farmacología y Toxicología, Centro de Diagnóstico Biomédico, IDIBAPS, Hospital Clínico, Universidad de Barcelona, Barcelona, Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - Manuel Muro
- Servicio de Inmunología, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB, Murcia, Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
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Harish BM, Saraswathi R, Vinod D, Devaraju KS. Discovery of a latent calcineurin inhibitory peptide from its autoinhibitory domain by docking, dynamic simulation, and in vitro methods. J Biomol Struct Dyn 2015; 34:983-92. [DOI: 10.1080/07391102.2015.1064829] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- B. M. Harish
- Department of Microbiology and Biotechnology, Bangalore University, JB Campus, Bangalore 560056, Karnataka, India
| | - R. Saraswathi
- Department of Microbiology and Biotechnology, Bangalore University, JB Campus, Bangalore 560056, Karnataka, India
| | - D. Vinod
- College of Pharmacy, Madras Medical College, Chennai 600003, India
| | - K. S. Devaraju
- Department of Microbiology and Biotechnology, Bangalore University, JB Campus, Bangalore 560056, Karnataka, India
- Department of Biochemistry, Karnatak University, Dharwad, Karnataka, India
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Deng YL, Xiong XZ, Cheng NS. Efficacy of ursodeoxycholic acid as an adjuvant treatment to prevent acute cellular rejection after liver transplantation: a meta-analysis of randomized controlled trials. Hepatobiliary Pancreat Dis Int 2014; 13:464-73. [PMID: 25308356 DOI: 10.1016/s1499-3872(14)60260-5] [Citation(s) in RCA: 3] [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 Acute cellular rejection (ACR) after liver transplantation (LT) is one of the most common problems faced by transplant recipients in spite of advances in immunosuppressive therapy. Recently, clinical trials reported that ursodeoxycholic acid (UDCA) reduced the incidence of ACR significantly. However, others have shown contradictory conclusion. Therefore, we performed a meta-analysis of rigorous randomized controlled trials (RCTs) to determine the efficacy of UDCA in reducing ACR after LT. DATA SOURCES All RCTs that evaluated efficacy of UDCA as an adjuvant treatment to prevent ACR after LT were searched from PubMed/MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, ScienceDirect databases and Web of Science (from January 1981 to March 2012). There was no language limitation in these searches. Relevant abstracts of international meetings were also searched. References of each included study were searched manually. RESULTS A total of 234 patients from four high-quality RCTs (Jadad score 4 to 5) were included in this meta-analysis. Prophylactic use of UDCA did not decrease the incidence of ACR (RR: 0.94, 95% CI: 0.77-1.16, P>0.05), steroid-resistant rejection (RR: 0.77, 95% CI: 0.47-1.27, P>0.05) and the number of patients with the multiple episodes of ACR (RR: 0.60, 95% CI: 0.28-1.30, P>0.05). Different intervention programs (high-dose vs low-dose UDCA; early vs delayed UDCA treatment) also did not alter the outcomes. CONCLUSIONS UDCA, as an adjuvant treatment, was not able to prevent ACR and steroid-resistant rejection after LT. Further trials should be done to determine whether higher dose of UDCA will be beneficial.
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Affiliation(s)
- Yi-Lei Deng
- Department of Biliary Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
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Fairfield C, Penninga L, Powell J, Harrison EM, Wigmore S. Glucocorticosteroid-free versus glucocorticosteroid-containing immunosuppression for liver transplanted patients. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2014. [DOI: 10.1002/14651858.cd007606.pub2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Penninga L, Wettergren A, Wilson CH, Chan A, Steinbrüchel DA, Gluud C. Antibody induction versus placebo, no induction, or another type of antibody induction for liver transplant recipients. Cochrane Database Syst Rev 2014; 2014:CD010253. [PMID: 24901467 PMCID: PMC8925015 DOI: 10.1002/14651858.cd010253.pub2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Liver transplantation is an established treatment option for end-stage liver failure. To date, no consensus has been reached on the use of immunosuppressive T-cell antibody induction for preventing rejection after liver transplantation. OBJECTIVES To assess the benefits and harms of immunosuppressive T-cell specific antibody induction compared with placebo, no induction, or another type of T-cell specific antibody induction for prevention of acute rejection in liver transplant recipients. SEARCH METHODS We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, Science Citation Index Expanded, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) until September 2013. SELECTION CRITERIA Randomised clinical trials assessing immunosuppression with T-cell specific antibody induction compared with placebo, no induction, or another type of antibody induction in liver transplant recipients. Our inclusion criteria stated that participants within each included trial should have received the same maintenance immunosuppressive therapy. We planned to include trials with all of the different types of T-cell specific antibodies that are or have been used for induction (ie., polyclonal antibodies (rabbit of horse antithymocyte globulin (ATG), or antilymphocyte globulin (ALG)), monoclonal antibodies (muromonab-CD3, anti-CD2, or alemtuzumab), and interleukin-2 receptor antagonists (daclizumab, basiliximab, BT563, or Lo-Tact-1)). DATA COLLECTION AND ANALYSIS We used RevMan analysis for statistical analysis of dichotomous data with risk ratio (RR) and of continuous data with mean difference (MD), both with 95% confidence intervals (CIs). We assessed the risk of systematic errors (bias) using bias risk domains with definitions. We used trial sequential analysis to control for random errors (play of chance). We presented outcome results in a summary of findings table. MAIN RESULTS We included 19 randomised clinical trials with a total of 2067 liver transplant recipients. All 19 trials were with high risk of bias. Of the 19 trials, 16 trials were two-arm trials, and three trials were three-arm trials. Hence, we found 25 trial comparisons with antibody induction agents: interleukin-2 receptor antagonist (IL-2 RA) versus no induction (10 trials with 1454 participants); monoclonal antibody versus no induction (five trials with 398 participants); polyclonal antibody versus no induction (three trials with 145 participants); IL-2 RA versus monoclonal antibody (one trial with 87 participants); and IL-2 RA versus polyclonal antibody (two trials with 112 participants). Thus, we were able to compare T-cell specific antibody induction versus no induction (17 trials with a total of 1955 participants). Overall, no difference in mortality (RR 0.91; 95% CI 0.64 to 1.28; low-quality of evidence), graft loss including death (RR 0.92; 95% CI 0.71 to 1.19; low-quality of evidence), and adverse events ((RR 0.97; 95% CI 0.93 to 1.02; low-quality evidence) outcomes was observed between any kind of T-cell specific antibody induction compared with no induction when the T-cell specific antibody induction agents were analysed together or separately. Acute rejection seemed to be reduced when any kind of T-cell specific antibody induction was compared with no induction (RR 0.85, 95% CI 0.75 to 0.96; moderate-quality evidence), and when trial sequential analysis was applied, the trial sequential monitoring boundary for benefit was crossed before the required information size was obtained. Furthermore, serum creatinine was statistically significantly higher when T-cell specific antibody induction was compared with no induction (MD 3.77 μmol/L, 95% CI 0.33 to 7.21; low-quality evidence), as well as when polyclonal T-cell specific antibody induction was compared with no induction, but this small difference was not clinically significant. We found no statistically significant differences for any of the remaining predefined outcomes - infection, cytomegalovirus infection, hepatitis C recurrence, malignancy, post-transplant lymphoproliferative disease, renal failure requiring dialysis, hyperlipidaemia, diabetes mellitus, and hypertension - when the T-cell specific antibody induction agents were analysed together or separately. Limited data were available for meta-analysis on drug-specific adverse events such as haematological adverse events for antithymocyte globulin. No data were found on quality of life.When T-cell specific antibody induction agents were compared with another type of antibody induction, no statistically significant differences were found for mortality, graft loss, and acute rejection for the separate analyses. When interleukin-2 receptor antagonists were compared with polyclonal T-cell specific antibody induction, drug-related adverse events were less common among participants treated with interleukin-2 receptor antagonists (RR 0.23, 95% CI 0.09 to 0.63; low-quality evidence), but this was caused by the results from one trial, and trial sequential analysis could not exclude random errors. We found no statistically significant differences for any of the remaining predefined outcomes: infection, cytomegalovirus infection, hepatitis C recurrence, malignancy, post-transplant lymphoproliferative disease, renal failure requiring dialysis, hyperlipidaemia, diabetes mellitus, and hypertension. No data were found on quality of life. AUTHORS' CONCLUSIONS The effects of T-cell antibody induction remain uncertain because of the high risk of bias of the randomised clinical trials, the small number of randomised clinical trials reported, and the limited numbers of participants and outcomes in the trials. T-cell specific antibody induction seems to reduce acute rejection when compared with no induction. No other clear benefits or harms were associated with the use of any kind of T-cell specific antibody induction compared with no induction, or when compared with another type of T-cell specific antibody. Hence, more randomised clinical trials are needed to assess the benefits and harms of T-cell specific antibody induction compared with placebo, and compared with another type of antibody, for prevention of rejection in liver transplant recipients. Such trials ought to be conducted with low risks of systematic error (bias) and low risk of random error (play of chance).
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Affiliation(s)
- Luit Penninga
- Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812Blegdamsvej 9CopenhagenDenmarkDK‐2100
- Rigshospitalet, Copenhagen University HospitalDepartment of Surgery and Transplantation C2122Blegdamsvej 9CopenhagenDenmarkDK‐2100 Ø
| | - André Wettergren
- Surgical Clinic HvidovreHvidovrevej 342, 1. floorHvidovreDenmark2650
| | - Colin H Wilson
- The Freeman HospitalInstitute of TransplantationFreeman RoadHigh HeatonNewcastle upon TyneTyne and WearUKNE7 7DN
| | - An‐Wen Chan
- University of TorontoWomen's College Research Institute790 Bay St, Rm 735TorontoONCanada
| | - Daniel A Steinbrüchel
- Rigshospitalet, Copenhagen University HospitalDepartment of Cardiothoracic SurgeryBlegdamsvej 9CopenhagenDenmarkDK‐2100
| | - Christian Gluud
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University HospitalThe Cochrane Hepato‐Biliary GroupBlegdamsvej 9CopenhagenDenmarkDK‐2100
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Penninga L, Wettergren A, Wilson CH, Chan A, Steinbrüchel DA, Gluud C. Antibody induction versus corticosteroid induction for liver transplant recipients. Cochrane Database Syst Rev 2014; 2014:CD010252. [PMID: 24880007 PMCID: PMC10577808 DOI: 10.1002/14651858.cd010252.pub2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Liver transplantation is an established treatment option for end-stage liver failure. To date, no consensus has been reached on the use of immunosuppressive T-cell specific antibody induction compared with corticosteroid induction of immunosuppression after liver transplantation. OBJECTIVES To assess the benefits and harms of T-cell specific antibody induction versus corticosteroid induction for prevention of acute rejection in liver transplant recipients. SEARCH METHODS We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, Science Citation Index Expanded, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) on 30 September 2013 together with reference checking, citation searching, contact with trial authors and pharmaceutical companies to identify additional trials. SELECTION CRITERIA We included all randomised clinical trials assessing immunosuppression with T-cell specific antibody induction versus corticosteroid induction in liver transplant recipients. Our inclusion criteria stated that participants within each included trial should have received the same maintenance immunosuppressive therapy. DATA COLLECTION AND ANALYSIS We used RevMan for statistical analysis of dichotomous data with risk ratio (RR) and of continuous data with mean difference (MD), both with 95% confidence intervals (CIs). We assessed risk of systematic errors (bias) using bias risk domains with definitions. We used trial sequential analysis to control for random errors (play of chance). MAIN RESULTS We included 10 randomised trials with a total of 1589 liver transplant recipients, which studied the use of T-cell specific antibody induction versus corticosteroid induction. All trials were with high risk of bias. We compared any kind of T-cell specific antibody induction versus corticosteroid induction in 10 trials with 1589 participants, including interleukin-2 receptor antagonist induction versus corticosteroid induction in nine trials with 1470 participants, and polyclonal T-cell specific antibody induction versus corticosteroid induction in one trial with 119 participants.Our analyses showed no significant differences regarding mortality (RR 1.01, 95% CI 0.72 to 1.43), graft loss (RR 1.12, 95% CI 0.82 to 1.53) and acute rejection (RR 0.84, 95% CI 0.70 to 1.00), infection (RR 0.96, 95% CI 0.85 to 1.09), hepatitis C virus recurrence (RR 0.89, 95% CI 0.79 to 1.00), malignancy (RR 0.59, 95% CI 0.13 to 2.73), and post-transplantation lymphoproliferative disorder (RR 1.00, 95% CI 0.07 to 15.38) when any kind of T-cell specific antibody induction was compared with corticosteroid induction (all low-quality evidence). Cytomegalovirus infection was less frequent in patients receiving any kind of T-cell specific antibody induction compared with corticosteroid induction (RR 0.50, 95% CI 0.33 to 0.75; low-quality evidence). This was also observed when interleukin-2 receptor antagonist induction was compared with corticosteroid induction (RR 0.55, 95% CI 0.37 to 0.83; low-quality evidence), and when polyclonal T-cell specific antibody induction was compared with corticosteroid induction (RR 0.21, 95% CI 0.06 to 0.70; low-quality evidence). However, when trial sequential analysis regarding cytomegalovirus infection was applied, the required information size was not reached. Furthermore, diabetes mellitus occurred less frequently when T-cell specific antibody induction was compared with corticosteroid induction (RR 0.45, 95% CI 0.34 to 0.60; low-quality evidence), when interleukin-2 receptor antagonist induction was compared with corticosteroid induction (RR 0.45, 95% CI 0.35 to 0.61; low-quality evidence), and when polyclonal T-cell specific antibody induction was compared with corticosteroid induction (RR 0.12, 95% CI 0.02 to 0.95; low-quality evidence). When trial sequential analysis was applied, the trial sequential monitoring boundary for benefit was crossed. We found no subgroup differences for type of interleukin-2 receptor antagonist (basiliximab versus daclizumab). Four trials reported on adverse events. However, no differences between trial groups were noted. Limited data were available for meta-analysis on drug-specific adverse events such as haematological adverse events for antithymocyte globulin. No data were available on quality of life. AUTHORS' CONCLUSIONS Because of the low quality of the evidence, the effects of T-cell antibody induction remain uncertain. T-cell specific antibody induction seems to reduce diabetes mellitus and may reduce cytomegalovirus infection when compared with corticosteroid induction. No other clear benefits or harms were associated with the use of T-cell specific antibody induction compared with corticosteroid induction. For some analyses, the number of trials investigating the use of T-cell specific antibody induction after liver transplantation is small, and the numbers of participants and outcomes in these randomised trials are limited. Furthermore, the included trials are heterogeneous in nature and have applied different types of T-cell specific antibody induction therapy. All trials were at high risk of bias. Hence, additional randomised clinical trials are needed to assess the benefits and harms of T-cell specific antibody induction compared with corticosteroid induction for liver transplant recipients. Such trials ought to be conducted with low risks of systematic error and of random error.
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Affiliation(s)
- Luit Penninga
- Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812Blegdamsvej 9CopenhagenDenmarkDK‐2100
- Rigshospitalet, Copenhagen University HospitalDepartment of Surgery and Transplantation C2122Blegdamsvej 9CopenhagenDenmarkDK‐2100 Ø
| | - André Wettergren
- Surgical Clinic HvidovreHvidovrevej 342, 1. floorHvidovreDenmark2650
| | - Colin H Wilson
- The Freeman HospitalInstitute of TransplantationFreeman RoadHigh HeatonNewcastle upon TyneTyne and WearUKNE7 7DN
| | - An‐Wen Chan
- University of TorontoWomen's College Research Institute790 Bay St, Rm 735TorontoONCanada
| | - Daniel A Steinbrüchel
- Rigshospitalet, Copenhagen University HospitalDepartment of Cardiothoracic SurgeryBlegdamsvej 9CopenhagenDenmarkDK‐2100
| | - Christian Gluud
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University HospitalThe Cochrane Hepato‐Biliary GroupBlegdamsvej 9CopenhagenDenmarkDK‐2100
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