1
|
Omori K, Qi M, Salgado M, Gonzalez N, Hui LT, Chen KT, Rawson J, Miao L, Komatsu H, Isenberg JS, Al-Abdullah IH, Mullen Y, Kandeel F. A scalable human islet 3D-culture platform maintains cell mass and function long-term for transplantation. Am J Transplant 2024; 24:177-189. [PMID: 37813189 DOI: 10.1016/j.ajt.2023.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 09/19/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023]
Abstract
Present-day islet culture methods provide short-term maintenance of cell viability and function, limiting access to islet transplantation. Attempts to lengthen culture intervals remain unsuccessful. A new method was developed to permit the long-term culture of islets. Human islets were embedded in polysaccharide 3D-hydrogel in cell culture inserts or gas-permeable chambers with serum-free CMRL 1066 supplemented media for up to 8 weeks. The long-term cultured islets maintained better morphology, cell mass, and viability at 4 weeks than islets in conventional suspension culture. In fact, islets cultured in the 3D-hydrogel retained β cell mass and function on par with freshly isolated islets in vitro and, when transplanted into diabetic mice, restored glucose balance similar to fresh islets. Using gas-permeable chambers, the 3D-hydrogel culture method was scaled up over 10-fold and maintained islet viability and function, although the cell mass recovery rate was 50%. Additional optimization of scale-up methods continues. If successful, this technology could afford flexibility and expand access to islet transplantation, especially single-donor islet-after-kidney transplantation.
Collapse
Affiliation(s)
- Keiko Omori
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA.
| | - Meirigeng Qi
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Mayra Salgado
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Nelson Gonzalez
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Lauren T Hui
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Kuan-Tsen Chen
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Jeffrey Rawson
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Lynn Miao
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Hirotake Komatsu
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Jeffrey S Isenberg
- Department of Diabetes Complications & Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Ismail H Al-Abdullah
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Yoko Mullen
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| | - Fouad Kandeel
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA 91010, USA
| |
Collapse
|
2
|
Caldara R, Tomajer V, Monti P, Sordi V, Citro A, Chimienti R, Gremizzi C, Catarinella D, Tentori S, Paloschi V, Melzi R, Mercalli A, Nano R, Magistretti P, Partelli S, Piemonti L. Allo Beta Cell transplantation: specific features, unanswered questions, and immunological challenge. Front Immunol 2023; 14:1323439. [PMID: 38077372 PMCID: PMC10701551 DOI: 10.3389/fimmu.2023.1323439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Abstract
Type 1 diabetes (T1D) presents a persistent medical challenge, demanding innovative strategies for sustained glycemic control and enhanced patient well-being. Beta cells are specialized cells in the pancreas that produce insulin, a hormone that regulates blood sugar levels. When beta cells are damaged or destroyed, insulin production decreases, which leads to T1D. Allo Beta Cell Transplantation has emerged as a promising therapeutic avenue, with the goal of reinstating glucose regulation and insulin production in T1D patients. However, the path to success in this approach is fraught with complex immunological hurdles that demand rigorous exploration and resolution for enduring therapeutic efficacy. This exploration focuses on the distinct immunological characteristics inherent to Allo Beta Cell Transplantation. An understanding of these unique challenges is pivotal for the development of effective therapeutic interventions. The critical role of glucose regulation and insulin in immune activation is emphasized, with an emphasis on the intricate interplay between beta cells and immune cells. The transplantation site, particularly the liver, is examined in depth, highlighting its relevance in the context of complex immunological issues. Scrutiny extends to recipient and donor matching, including the utilization of multiple islet donors, while also considering the potential risk of autoimmune recurrence. Moreover, unanswered questions and persistent gaps in knowledge within the field are identified. These include the absence of robust evidence supporting immunosuppression treatments, the need for reliable methods to assess rejection and treatment protocols, the lack of validated biomarkers for monitoring beta cell loss, and the imperative need for improved beta cell imaging techniques. In addition, attention is drawn to emerging directions and transformative strategies in the field. This encompasses alternative immunosuppressive regimens and calcineurin-free immunoprotocols, as well as a reevaluation of induction therapy and recipient preconditioning methods. Innovative approaches targeting autoimmune recurrence, such as CAR Tregs and TCR Tregs, are explored, along with the potential of stem stealth cells, tissue engineering, and encapsulation to overcome the risk of graft rejection. In summary, this review provides a comprehensive overview of the inherent immunological obstacles associated with Allo Beta Cell Transplantation. It offers valuable insights into emerging strategies and directions that hold great promise for advancing the field and ultimately improving outcomes for individuals living with diabetes.
Collapse
Affiliation(s)
- Rossana Caldara
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Valentina Tomajer
- Pancreatic Surgery, Pancreas Translational & Clinical Research Center, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Paolo Monti
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Valeria Sordi
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Antonio Citro
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Raniero Chimienti
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
| | - Chiara Gremizzi
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Davide Catarinella
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Stefano Tentori
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Vera Paloschi
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Raffella Melzi
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Alessia Mercalli
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Rita Nano
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Paola Magistretti
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Stefano Partelli
- Pancreatic Surgery, Pancreas Translational & Clinical Research Center, IRCCS Ospedale San Raffaele, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
| | - Lorenzo Piemonti
- Clinic Unit of Regenerative Medicine and Organ Transplants, IRCCS Ospedale San Raffaele, Milan, Italy
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
| |
Collapse
|
3
|
Nagendra L, Fernandez CJ, Pappachan JM. Simultaneous pancreas-kidney transplantation for end-stage renal failure in type 1 diabetes mellitus: Current perspectives. World J Transplant 2023; 13:208-220. [PMID: 37746036 PMCID: PMC10514751 DOI: 10.5500/wjt.v13.i5.208] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/18/2023] [Indexed: 09/15/2023] Open
Abstract
Type 1 diabetes mellitus (T1DM) is one of the important causes of chronic kidney disease (CKD) and end-stage renal failure (ESRF). Even with the best available treatment options, management of T1DM poses significant challenges for cli nicians across the world, especially when associated with CKD and ESRF. Substantial increases in morbidity and mortality along with marked rise in treatment costs and marked reduction of quality of life are the usual consequences of onset of CKD and progression to ESRF in patients with T1DM. Simultaneous pancreas-kidney transplant (SPK) is an attractive and promising treatment option for patients with advanced CKD/ESRF and T1DM for potential cure of these diseases and possibly several complications. However, limited availability of the organs for transplantation, the need for long-term immunosuppression to prevent rejection, peri- and post-operative complications of SPK, lack of resources and the expertise for the procedure in many centers, and the cost implications related to the surgery and postoperative care of these patients are major issues faced by clinicians across the globe. This clinical update review compiles the latest evidence and current recommendations of SPK for patients with T1DM and advanced CKD/ESRF to enable clinicians to care for these diseases.
Collapse
Affiliation(s)
- Lakshmi Nagendra
- Department of Endocrinology, JSS Medical College, JSS Academy of Higher Education and Research, Mysore 570015, India
| | - Cornelius James Fernandez
- Department of Endocrinology & Metabolism, Pilgrim Hospital, United Lincolnshire Hospitals NHS Trust, Boston PE21 9QS, United Kingdom
| | - Joseph M Pappachan
- Department of Endocrinology and Metabolism, Lancashire Teaching Hospitals NHS Trust, Preston PR2 9HT, United Kingdom
- Faculty of Science, Manchester Metropolitan University, Manchester M15 6BH, United Kingdom
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, United Kingdom
| |
Collapse
|
4
|
Martin D, Alberti P, Demartines N, Phillips M, Casey J, Sutherland A. Whole-Organ Pancreas and Islets Transplantations in UK: An Overview and Future Directions. J Clin Med 2023; 12:3245. [PMID: 37176684 PMCID: PMC10179530 DOI: 10.3390/jcm12093245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 04/19/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Whole-organ pancreas and islets transplantations are two therapeutic options to treat type 1 diabetic patients resistant to optimised medical treatment in whom severe complications develop. Selection of the best option for β-cell replacement depends on several factors such as kidney function, patient comorbidities, and treatment goals. For a patient with end-stage kidney disease, the treatment of choice is often a simultaneous transplant of the pancreas and kidney (SPK). However, it remains a major surgical procedure in patients with multiple comorbidities and therefore it is important to select those who will benefit from it. Additionally, in view of the organ shortage, new strategies to improve outcomes and reduce immune reactions have been developed, including dynamic organ perfusion technologies, pancreas bioengineering, and stem cell therapies. The purpose of this article is to review the indications, surgical techniques, outcomes, and future directions of whole-organ pancreas and islets transplantations.
Collapse
Affiliation(s)
- David Martin
- Department of Visceral Surgery and Transplantation, University Hospital CHUV, University of Lausanne (UNIL), 1015 Lausanne, Switzerland;
- Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK (M.P.); (J.C.); (A.S.)
| | - Piero Alberti
- Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK (M.P.); (J.C.); (A.S.)
| | - Nicolas Demartines
- Department of Visceral Surgery and Transplantation, University Hospital CHUV, University of Lausanne (UNIL), 1015 Lausanne, Switzerland;
| | - Melanie Phillips
- Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK (M.P.); (J.C.); (A.S.)
| | - John Casey
- Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK (M.P.); (J.C.); (A.S.)
| | - Andrew Sutherland
- Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK (M.P.); (J.C.); (A.S.)
| |
Collapse
|
5
|
Sordi V, Monaco L, Piemonti L. Cell Therapy for Type 1 Diabetes: From Islet Transplantation to Stem Cells. Horm Res Paediatr 2022; 96:658-669. [PMID: 36041412 DOI: 10.1159/000526618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 08/08/2022] [Indexed: 11/19/2022] Open
Abstract
The field of cell therapy of type 1 diabetes is a particularly interesting example in the scenario of regenerative medicine. In fact, β-cell replacement has its roots in the experience of islet transplantation, which began 40 years ago and is currently a rapidly accelerating field, with several ongoing clinical trials using β cells derived from stem cells. Type 1 diabetes is particularly suitable for cell therapy as it is a disease due to the deficiency of only one cell type, the insulin-producing β cell, and this endocrine cell does not need to be positioned inside the pancreas to perform its function. On the other hand, the presence of a double immunological barrier, the allogeneic one and the autoimmune one, makes the protection of β cells from rejection a major challenge. Until today, islet transplantation has taught us a lot, pioneering immunosuppressive therapies, graft encapsulation, tissue engineering, and test of different implant sites and has stimulated a great variety of studies on β-cell function. This review starts from islet transplantation, presenting its current indications and the latest published trials, to arrive at the prospects of stem cell therapy, presenting the latest innovations in the field.
Collapse
Affiliation(s)
- Valeria Sordi
- Diabetes Research Institute, San Raffaele Hospital, Milan, Italy,
| | - Laura Monaco
- Diabetes Research Institute, San Raffaele Hospital, Milan, Italy
| | - Lorenzo Piemonti
- Diabetes Research Institute, San Raffaele Hospital, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| |
Collapse
|
6
|
Walker S, Appari M, Forbes S. Considerations and challenges of islet transplantation and future therapies on the horizon. Am J Physiol Endocrinol Metab 2022; 322:E109-E117. [PMID: 34927459 DOI: 10.1152/ajpendo.00310.2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Islet transplantation is a treatment for selected adults with type 1 diabetes and severe hypoglycemia. Islets from two or more donor pancreases, a scarce resource, are usually required to impact glycemic control, but the treatment falls short of a cure. Islets are avascular when transplanted into the hypoxic liver environment and subjected to inflammatory insults, immune attack, and toxicity from systemic immunosuppression. The Collaborative Islet Transplant Registry, with outcome data on over 1,000 islet transplant recipients, has demonstrated that larger islet numbers transplanted and older age of recipients are associated with better outcomes. Induction with T-cell depleting agents and the TNF-α inhibitor etanercept and maintenance systemic immunosuppression with mTOR inhibitors in combination with calcineurin inhibitors also appear advantageous, but concerns remain over immunosuppressive toxicity. We discuss strategies and therapeutics that address specific challenges of islet transplantation, many of which are at the preclinical stage of development. On the horizon are adjuvant cell therapies with mesenchymal stromal cells and regulatory T cells that have been used in preclinical models and in humans in other contexts; such a strategy may enable reductions in immunosuppression in the early peri-transplant period when the islets are vulnerable to apoptosis. Human embryonic stem cell-derived islets are in early-phase clinical trials and hold the promise of an inexhaustible supply of insulin-producing cells; effective encapsulation of such cells or, silencing of the human leukocyte antigen (HLA) complex would eliminate the need for immunosuppression, enabling this therapy to be used in all those with type 1 diabetes.
Collapse
Affiliation(s)
- Sophie Walker
- BHF Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Mahesh Appari
- BHF Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Shareen Forbes
- BHF Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
- Transplant Unit, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
- Islet Transplant Program, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
7
|
Piemonti L. Felix dies natalis, insulin… ceterum autem censeo "beta is better". Acta Diabetol 2021; 58:1287-1306. [PMID: 34027619 DOI: 10.1007/s00592-021-01737-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/06/2021] [Indexed: 12/12/2022]
Abstract
One hundred years after its discovery, insulin remains the life-saving therapy for many patients with diabetes. It has been a 100-years-old success story thanks to the fact that insulin therapy has continuously integrated the knowledge developed over a century. In 1982, insulin becomes the first therapeutic protein to be produced using recombinant DNA technology. The first "mini" insulin pump and the first insulin pen become available in 1983 and 1985, respectively. In 1996, the first generation of insulin analogues were produced. In 1999, the first continuous glucose-monitoring device for reading interstitial glucose was approved by the FDA. In 2010s, the ultra-long action insulins were introduced. An equally exciting story developed in parallel. In 1966. Kelly et al. performed the first clinical pancreas transplant at the University of Minnesota, and now it is a well-established clinical option. First successful islet transplantations in humans were obtained in the late 1980s and 1990s. Their ability to consistently re-establish the endogenous insulin secretion was obtained in 2000s. More recently, the possibility to generate large numbers of functional human β cells from pluripotent stem cells was demonstrated, and the first clinical trial using stem cell-derived insulin producing cell was started in 2014. This year, the discovery of this life-saving hormone turns 100 years. This provides a unique opportunity not only to celebrate this extraordinary success story, but also to reflect on the limits of insulin therapy and renew the commitment of the scientific community to an insulin free world for our patients.
Collapse
Affiliation(s)
- Lorenzo Piemonti
- San Raffaele Diabetes Research Institute, San Raffaele Scientific Institute, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy.
- Università Vita-Salute San Raffaele, Milan, Italy.
| |
Collapse
|
8
|
Marfil-Garza BA, Shapiro AMJ, Kin T. Clinical islet transplantation: Current progress and new frontiers. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2021; 28:243-254. [PMID: 33417749 DOI: 10.1002/jhbp.891] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/12/2020] [Accepted: 12/28/2020] [Indexed: 02/05/2023]
Abstract
Islet transplantation (IT) is now a robust treatment for selected patients with type 1 diabetes suffering from recurrent hypoglycemia and impaired awareness of hypoglycemia. A global soar of clinical islet transplant programs attests to the commitment of many institutions and researchers to advance IT as a potential cure for this devastating disease. However, many challenges limiting the widespread applicability of clinical IT remain. In this review, we will touch on the milestones in the history of IT and its path to clinical success, discuss the current challenges around IT, propose some possible solutions, and elaborate on the frontiers envisioned in the future of clinical IT.
Collapse
Affiliation(s)
| | - Andrew Mark James Shapiro
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
- Clinical Islet Transplant Program, University of Alberta, Edmonton, AB, Canada
| | - Tatsuya Kin
- Clinical Islet Transplant Program, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
9
|
Sally MB, Ellis MK, Hutchens M, Groat T, Swanson E, Patel MS, Niemann CU, Malinoski DJ. Deceased organ donor factors influencing pancreatic graft transplantation and survival. Clin Transplant 2020; 33:e13571. [PMID: 31001850 DOI: 10.1111/ctr.13571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 12/15/2022]
Abstract
Criteria for organ acceptance in brain-dead organ donors remain inconsistent, especially when concerning pancreatic transplants. We sought to examine donor-specific predictors of pancreatic graft use and survival to better guide the selection and management of potential donors. A prospective observational study of all donors from ten organ procurement organizations was conducted from March 2012 to January 2015. Critical care endpoints were collected at 4 standardized time points. Data associated with pancreatic transplantation and graft survival rates were first determined using univariate analyses, and then logistic regression was used to identify independent predictors of these two outcomes. From 1819 donors, 238 (13.1%) pancreata were transplanted, and at a mean follow-up of 192 days, 218 (91.6%) grafts had survived. After regression analysis, donor age (OR = 0.89), HgbA1C (OR = 0.07), and achieving the donor management goal (DMG) for ejection fraction at allocation of ≥50% (OR = 3.29) remained as independent predictors of pancreatic utilization. On regression analysis, graft survival was independently predicted by lower donor age (OR = 0.93) and achieving the DMGs for mean arterial pressure (60-110 mm Hg) and glucose (≤180 mg/dL) at separate time points. These results may help guide the management and selection of potential pancreatic donors after brain death.
Collapse
Affiliation(s)
- Mitchell B Sally
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon.,Division of Trauma, Critical Care, and Acute Care Surgery, Department of Surgery, Oregon Health and Science University, Portland, Oregon
| | - Margaret Katherine Ellis
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon
| | - Michael Hutchens
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon
| | - Tahnee Groat
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon
| | - Elizabeth Swanson
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon
| | - Madhukar S Patel
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts
| | - Claus U Niemann
- Department of Anesthesiology and Surgery, University of California San Francisco, San Francisco, California
| | - Darren J Malinoski
- Operative Care Division, Section of Surgical Critical Care, VA Portland Health Care System, Portland, Oregon.,Division of Trauma, Critical Care, and Acute Care Surgery, Department of Surgery, Oregon Health and Science University, Portland, Oregon
| |
Collapse
|
10
|
Vantyghem MC, de Koning EJP, Pattou F, Rickels MR. Advances in β-cell replacement therapy for the treatment of type 1 diabetes. Lancet 2019; 394:1274-1285. [PMID: 31533905 PMCID: PMC6951435 DOI: 10.1016/s0140-6736(19)31334-0] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/28/2019] [Accepted: 05/31/2019] [Indexed: 12/17/2022]
Abstract
The main goal of treatment for type 1 diabetes is to control glycaemia with insulin therapy to reduce disease complications. For some patients, technological approaches to insulin delivery are inadequate, and allogeneic islet transplantation is a safe alternative for those patients who have had severe hypoglycaemia complicated by impaired hypoglycaemia awareness or glycaemic lability, or who already receive immunosuppressive drugs for a kidney transplant. Since 2000, intrahepatic islet transplantation has proven efficacious in alleviating the burden of labile diabetes and preventing complications related to diabetes, whether or not a previous kidney transplant is present. Age, body-mass index, renal status, and cardiopulmonary status affect the choice between pancreas or islet transplantation. Access to transplantation is limited by the number of deceased donors and the necessity of immunosuppression. Future approaches might include alternative sources of islets (eg, xenogeneic tissue or human stem cells), extrahepatic sites of implantation (eg, omental, subcutaneous, or intramuscular), and induction of immune tolerance or encapsulation of islets.
Collapse
Affiliation(s)
- Marie-Christine Vantyghem
- University of Lille, European Genomic Institute for Diabetes, Lille, France; Department of Endocrinology, Diabetology and Metabolism, Centre Hospitalier Universitaire de Lille, Lille, France; Inserm, Translational Research for Diabetes, Lille, France.
| | - Eelco J P de Koning
- Department of Medicine, Leiden University Medical Center, Leiden, Netherlands; Hubrecht Institute of the Royal Netherlands Academy of Arts and Sciences and University Medical Center Utrecht, Utrecht, Netherlands
| | - François Pattou
- University of Lille, European Genomic Institute for Diabetes, Lille, France; Department of General and Endocrine Surgery Centre, Centre Hospitalier Universitaire de Lille, Lille, France; Inserm, Translational Research for Diabetes, Lille, France
| | - Michael R Rickels
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA; Institute for Diabetes, Obesity and Metabolism, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| |
Collapse
|
11
|
Indications for islet or pancreatic transplantation: Statement of the TREPID working group on behalf of the Société francophone du diabète (SFD), Société francaise d’endocrinologie (SFE), Société francophone de transplantation (SFT) and Société française de néphrologie – dialyse – transplantation (SFNDT). DIABETES & METABOLISM 2019; 45:224-237. [DOI: 10.1016/j.diabet.2018.07.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 05/30/2018] [Accepted: 07/24/2018] [Indexed: 12/28/2022]
|
12
|
Abstract
Background It has been proposed that islet transplants comprised primarily of small rather than large islets may provide better graft function, due to their lower susceptibility to hypoxic damage. Our aim was to determine whether islet size correlated with in vivo graft function in islet transplant recipients with C peptide–negative type 1 diabetes when islets have undergone pretransplant islet culture. Methods Human pancreatic islets were isolated, cultured for 24 hours and infused by standardized protocols. Ninety-minute stimulated C-peptide concentrations were determined during a standard meal tolerance test 3 months posttransplant. The islet isolation index (IEq/islet number) was determined immediately after isolation and again before transplantation (after tissue culture). This was correlated with patient insulin requirement or stimulated C-peptide. Results Changes in insulin requirement did not significantly correlate with islet isolation index. Stimulated C-peptide correlated weakly with IEq at isolation (P = 0.40) and significantly with IEq at transplantation (P = 0.018). Stimulated C-peptide correlated with islet number at isolation (P = 0.013) and more strongly with the islet number at transplantation (P = 0.001). In contrast, the correlation of stimulated C-peptide and islet isolation index was weaker (P = 0.018), and this was poorer at transplantation (P = 0.034). Using linear regression, the strongest association with graft function was islet number (r = 0.722, P = 0.001). Islet size was not related to graft function after adjusting for islet volume or number. Conclusions These data show no clear correlation between islet isolation index and graft function; both small and large islets are suitable for transplantation, provided the islets have survived a short culture period postisolation. By analyzing the insulin requirements from 25 islet transplantation recipients, Hughes et al determined the strongest association with graft function was islet number while islet size was not related to graft function after adjusting for islet volume or number.
Collapse
|
13
|
Rickels MR, Robertson RP. Pancreatic Islet Transplantation in Humans: Recent Progress and Future Directions. Endocr Rev 2019; 40:631-668. [PMID: 30541144 PMCID: PMC6424003 DOI: 10.1210/er.2018-00154] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 10/26/2018] [Indexed: 12/11/2022]
Abstract
Pancreatic islet transplantation has become an established approach to β-cell replacement therapy for the treatment of insulin-deficient diabetes. Recent progress in techniques for islet isolation, islet culture, and peritransplant management of the islet transplant recipient has resulted in substantial improvements in metabolic and safety outcomes for patients. For patients requiring total or subtotal pancreatectomy for benign disease of the pancreas, isolation of islets from the diseased pancreas with intrahepatic transplantation of autologous islets can prevent or ameliorate postsurgical diabetes, and for patients previously experiencing painful recurrent acute or chronic pancreatitis, quality of life is substantially improved. For patients with type 1 diabetes or insulin-deficient forms of pancreatogenic (type 3c) diabetes, isolation of islets from a deceased donor pancreas with intrahepatic transplantation of allogeneic islets can ameliorate problematic hypoglycemia, stabilize glycemic lability, and maintain on-target glycemic control, consequently with improved quality of life, and often without the requirement for insulin therapy. Because the metabolic benefits are dependent on the numbers of islets transplanted that survive engraftment, recipients of autoislets are limited to receive the number of islets isolated from their own pancreas, whereas recipients of alloislets may receive islets isolated from more than one donor pancreas. The development of alternative sources of islet cells for transplantation, whether from autologous, allogeneic, or xenogeneic tissues, is an active area of investigation that promises to expand access and indications for islet transplantation in the future treatment of diabetes.
Collapse
Affiliation(s)
- Michael R Rickels
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - R Paul Robertson
- Division of Metabolism, Endocrinology, and Nutrition, Department of Medicine, University of Washington School of Medicine, Seattle, Washington
- Division of Endocrinology, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
- Pacific Northwest Diabetes Research Institute, Seattle, Washington
| |
Collapse
|
14
|
Venkatanarasimhamoorthy VS, Barlow AD. Simultaneous Pancreas-Kidney Transplantation Versus Living Donor Kidney Transplantation Alone: an Outcome-Driven Choice? Curr Diab Rep 2018; 18:67. [PMID: 30030637 PMCID: PMC6061188 DOI: 10.1007/s11892-018-1039-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW The choice of optimum transplant in a patient with type 1 diabetes mellitus (T1DM) and chronic kidney disease stage V (CKD V) is not clear. The purpose of this review was to investigate this in more detail-in particular the choice between a simultaneous pancreas-kidney transplantation (SPKT) and living donor kidney transplantation (LDKT), including recent evidence, to aid clinicians and their patients in making an informed choice in their care. RECENT FINDINGS Analyses of large databases have recently shown SPKT to have better survival rates than a LDKT in the long-term, despite an early increase in morbidity and mortality in SPKT recipients. This survival advantage has only been shown in those SPKT recipients with a functioning pancreas and not those who had early pancreas graft loss. The choice of SPKT or LDKT should not be based on patient and graft survival outcomes alone. Individual patient circumstances, preferences, and comorbidities, among other factors should form an important part of the decision-making process. In general, an SPKT should be considered in those patients not on dialysis and LDKT in those nearing or already on dialysis.
Collapse
Affiliation(s)
| | - Adam D Barlow
- Consultant Transplant Surgeon, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK.
| |
Collapse
|
15
|
Gerber PA, Hochuli M, Benediktsdottir BD, Zuellig RA, Tschopp O, Glenck M, de Rougemont O, Oberkofler C, Spinas GA, Lehmann R. Islet transplantation as safe and efficacious method to restore glycemic control and to avoid severe hypoglycemia after donor organ failure in pancreas transplantation. Clin Transplant 2017; 32. [DOI: 10.1111/ctr.13153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Philipp A. Gerber
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Michel Hochuli
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Bara D. Benediktsdottir
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Richard A. Zuellig
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Oliver Tschopp
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Michael Glenck
- Division of Radiology; University Hospital Zurich; Zurich Switzerland
| | | | | | - Giatgen A. Spinas
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| | - Roger Lehmann
- Division of Endocrinology, Diabetes and Clinical Nutrition; University Hospital Zurich; Zurich Switzerland
| |
Collapse
|
16
|
Current outcomes in islet versus solid organ pancreas transplant for β-cell replacement in type 1 diabetes. Curr Opin Organ Transplant 2017; 21:399-404. [PMID: 27258578 DOI: 10.1097/mot.0000000000000332] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW With continued optimization of islet isolation and immunosuppression protocols, the medium-term rates of insulin independence following islet transplantation have improved significantly. This review evaluates the most up-to-date outcomes data for both solid organ pancreas and islet transplantation to develop an algorithm for selection of β-cell replacement in type 1 diabetes patients. RECENT FINDINGS Solid organ pancreas and islet transplantation have both displayed improved rates of 5-year insulin independence, largely attributable to improvements in immunosuppressive regimens. The medium-term rates of insulin independence following islet transplantation in highly selected type 1 nonuremic diabetic recipients is beginning to approach the success rates observed following solitary pancreas transplantation. SUMMARY Although pancreas transplantation has historically been favored for β-cell replacement, current outcomes following islet transplantation justify the use of this minimally invasive therapy in carefully selected patients. Pancreas transplant remains the procedure of choice for β-cell replacement in uremic patients. Islet transplantation should be considered in nonuremic patients with low BMI and low insulin requirements, patients lacking the cardiovascular reserve to undergo open abdominal surgery, or patients who elect to forego the risks of a major operation in exchange for an increased risk of islet graft failure.
Collapse
|
17
|
Assessment of Immune Isolation of Allogeneic Mouse Pancreatic Progenitor Cells by a Macroencapsulation Device. Transplantation 2017; 100:1211-8. [PMID: 26982952 DOI: 10.1097/tp.0000000000001146] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Embryonic stem cell (ESC)-derived β cells hold the promise of providing a renewable source of tissue for the treatment of insulin-dependent diabetes. Encapsulation may allow ESC-derived β cells to be transplanted without immunosuppression, thus enabling wider application of this therapy. METHODS In this study, we investigated the immunogenicity of mouse pancreatic progenitor cells and efficacy of a new macroencapsulation device in protecting these cells against alloimmune and autoimmune responses in mouse models. RESULTS Mouse pancreatic progenitor cells activated the indirect but not the direct pathway of alloimmune response and were promptly rejected in immune competent hosts. The new macroencapsulation device abolished T cell activation induced by allogeneic splenocytes and protected allogeneic MIN6 β cells and pancreatic progenitors from rejection even in presensitized recipients. In addition, the device was effective in protecting MIN6 cells in spontaneously diabetic nonobese diabetic recipients against both alloimmune and recurring autoimmune responses. CONCLUSIONS Our results demonstrate that macroencapsulation can effectively prevent immune sensing and rejection of allogeneic pancreatic progenitor cells in fully sensitized and autoimmune hosts.
Collapse
|
18
|
Oura T, Hotta K, Lei J, Markmann J, Rosales I, Dehnadi A, Kawai K, Ndishabandi D, Smith RN, Cosimi AB, Kawai T. Immunosuppression With CD40 Costimulatory Blockade Plus Rapamycin for Simultaneous Islet-Kidney Transplantation in Nonhuman Primates. Am J Transplant 2017; 17:646-656. [PMID: 27501203 PMCID: PMC5298941 DOI: 10.1111/ajt.13999] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/10/2016] [Accepted: 07/30/2016] [Indexed: 01/25/2023]
Abstract
The lack of a reliable immunosuppressive regimen that effectively suppresses both renal and islet allograft rejection without islet toxicity hampers a wider clinical application of simultaneous islet-kidney transplantation (SIK). Seven MHC-mismatched SIKs were performed in diabetic cynomolgus monkeys. Two recipients received rabbit antithymocyte globulin (ATG) induction followed by daily tacrolimus and rapamycin (ATG/Tac/Rapa), and five recipients were treated with anti-CD40 monoclonal antibody (mAb) and rapamycin (aCD40/Rapa). Anti-inflammatory therapy, including anti-interleukin-6 receptor mAb and anti-tumor necrosis factor-α mAb, was given in both groups. The ATG/Tac/Rapa recipients failed to achieve long-term islet allograft survival (19 and 26 days) due to poor islet engraftment and cytomegalovirus pneumonia. In contrast, the aCD40/Rapa regimen provided long-term islet and kidney allograft survival (90, 94, >120, >120, and >120 days), with only one recipient developing evidence of allograft rejection. The aCD40/Rapa regimen was also tested in four kidney-alone transplant recipients. All four recipients achieved long-term renal allograft survival (100% at day 120), which was superior to renal allograft survival (62.9% at day 120) with triple immunosuppressive regimen (tacrolimus, mycophenolate mofetil, and steroids). The combination of anti-CD40 mAb and rapamycin is an effective and nontoxic immunosuppressive regimen that uses only clinically available agents for kidney and islet recipients.
Collapse
Affiliation(s)
- Tetsu Oura
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Kiyohiko Hotta
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Ji Lei
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - James Markmann
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Ivy Rosales
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Abbas Dehnadi
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Kento Kawai
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Dorothy Ndishabandi
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Rex-Neal Smith
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - A. Benedict Cosimi
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Tatsuo Kawai
- Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| |
Collapse
|
19
|
Abstract
Even though type 2 diabetes rates plateaued, type 1 diabetes continues to increase. Pancreas transplantation is a treatment modality for patients who suffer hypoglycemic unawareness or complications from diabetes. Islet cell transplantation success rates have improved with modification and advances in isolation, transplantation, and new immunosuppression regimens. The new cell sources as well as delivery ways are explored and being tested in human trials.
Collapse
Affiliation(s)
- Betul Hatipoglu
- Endocrinology and Metabolism Institute, Cleveland Clinic, 9500 Euclid Avenue, F20, Cleveland, OH 44195, USA.
| |
Collapse
|
20
|
Schuetz C, Markmann JF. Islet cell transplant: Update on current clinical trials. CURRENT TRANSPLANTATION REPORTS 2016; 3:254-263. [PMID: 28451515 DOI: 10.1007/s40472-016-0103-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the last 15 years clinical islet transplantation has made the leap from experimental procedure to standard of care for a highly selective group of patients. Due to a risk-benefit calculation involving the required systemic immunosuppression the procedure is only considered in patients with type 1 diabetes, complicated by severe hypoglycemia or end stage renal disease. In this review we summarize current outcomes of the procedure and take a look at ongoing and future improvements and refinements of beta cell therapy.
Collapse
Affiliation(s)
- Christian Schuetz
- Islet transplantation laboratory, Division of Transplantation, Department of Surgery
| | - James F Markmann
- Islet transplantation laboratory, Division of Transplantation, Department of Surgery
| |
Collapse
|
21
|
Abstract
PURPOSE OF REVIEW This article provides a summary of the current outcomes of β-cell replacement strategies, an algorithm for choosing a specific modality while highlighting associated advantages and disadvantages, and outlines remaining challenges and areas of active investigation in β-cell replacement therapy. RECENT FINDINGS The most recent reports of islet cell allotransplantation have shown improvements over previous eras and now rival some outcomes of pancreas alone transplantation. Active areas of investigation are focused on improving techniques for islet isolation, graft monitoring, and managing challenges posed by the innate and alloimmune systems. SUMMARY Patients with insulin-dependent diabetes who continue to experience life threatening hypoglycemia despite maximal medical management can benefit from β-cell replacement. Emerging nontransplant technologies have not provided a physiologic euglycemic state to the extent offered by transplantation. Islet transplantation eliminates hypoglycemic episodes/unawareness, facilitates normalization of hemoglobin A1c (HbA1c), decreases microvascular disease progression, and improves quality of life for patients with problematic diabetes. Mid- and long-term outcomes of islet transplantation performed at expert centers approximate those of registry reports of solitary pancreas transplant, whereas the complication profile is quite favorable.
Collapse
|
22
|
Moassesfar S, Masharani U, Frassetto LA, Szot GL, Tavakol M, Stock PG, Posselt AM. A Comparative Analysis of the Safety, Efficacy, and Cost of Islet Versus Pancreas Transplantation in Nonuremic Patients With Type 1 Diabetes. Am J Transplant 2016; 16:518-26. [PMID: 26595767 PMCID: PMC5549848 DOI: 10.1111/ajt.13536] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/28/2015] [Accepted: 08/15/2015] [Indexed: 01/25/2023]
Abstract
Few current studies compare the outcomes of islet transplantation alone (ITA) and pancreas transplantation alone (PTA) for type 1 diabetes (T1D). We examined these two beta cell replacement therapies in nonuremic patients with T1D with respect to safety, graft function and cost. Sequential patients received PTA (n = 15) or ITA (n = 10) at our institution. Assessments of graft function included duration of insulin independence; glycemic control, as measured by hemoglobin A1c; and elimination of severe hypoglycemia. Cost analysis included all normalized costs associated with transplantation and inpatient management. ITA patients received one (n = 6) or two (n = 4) islet transplants. Mean duration of insulin independence in this group was 35 mo; 90% were independent at 1 year, and 70% were independent at 3 years. Mean duration of insulin independence in PTA was 55 mo; 93% were insulin independent at 1 year, and 64% were independent at 3 years. Glycemic control was comparable in all patients with functioning grafts, as were overall costs ($138 872 for ITA, $134 748 for PTA). We conclude that with advances in islet isolation and posttransplant management, ITA can produce outcomes similar to PTA and represents a clinically viable option to achieve long-term insulin independence in selected patients with T1D.
Collapse
Affiliation(s)
- S. Moassesfar
- Pediatrics, University of California, San Francisco, San Francisco, CA
| | - U. Masharani
- Medicine, University of California, San Francisco, San Francisco, CA
| | - L. A. Frassetto
- Medicine, University of California, San Francisco, San Francisco, CA
| | - G. L. Szot
- Transplant Surgery, University of California, San Francisco, San Francisco, CA
| | - M. Tavakol
- Transplant Surgery, University of California, San Francisco, San Francisco, CA
| | - P. G. Stock
- Transplant Surgery, University of California, San Francisco, San Francisco, CA
| | - A. M. Posselt
- Transplant Surgery, University of California, San Francisco, San Francisco, CA
| |
Collapse
|
23
|
Bartlett ST, Markmann JF, Johnson P, Korsgren O, Hering BJ, Scharp D, Kay TWH, Bromberg J, Odorico JS, Weir GC, Bridges N, Kandaswamy R, Stock P, Friend P, Gotoh M, Cooper DKC, Park CG, O'Connell P, Stabler C, Matsumoto S, Ludwig B, Choudhary P, Kovatchev B, Rickels MR, Sykes M, Wood K, Kraemer K, Hwa A, Stanley E, Ricordi C, Zimmerman M, Greenstein J, Montanya E, Otonkoski T. Report from IPITA-TTS Opinion Leaders Meeting on the Future of β-Cell Replacement. Transplantation 2016; 100 Suppl 2:S1-44. [PMID: 26840096 PMCID: PMC4741413 DOI: 10.1097/tp.0000000000001055] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 10/07/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Stephen T. Bartlett
- Department of Surgery, University of Maryland School of Medicine, Baltimore MD
| | - James F. Markmann
- Division of Transplantation, Massachusetts General Hospital, Boston MA
| | - Paul Johnson
- Nuffield Department of Surgical Sciences and Oxford Centre for Diabetes, Endocrinology, and Metabolism, University of Oxford, Oxford, United Kingdom
| | - Olle Korsgren
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Bernhard J. Hering
- Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, MN
| | - David Scharp
- Prodo Laboratories, LLC, Irvine, CA
- The Scharp-Lacy Research Institute, Irvine, CA
| | - Thomas W. H. Kay
- Department of Medicine, St. Vincent’s Hospital, St. Vincent's Institute of Medical Research and The University of Melbourne Victoria, Australia
| | - Jonathan Bromberg
- Division of Transplantation, Massachusetts General Hospital, Boston MA
| | - Jon S. Odorico
- Division of Transplantation, Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Gordon C. Weir
- Joslin Diabetes Center and Harvard Medical School, Boston, MA
| | - Nancy Bridges
- National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Raja Kandaswamy
- Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Peter Stock
- Division of Transplantation, University of San Francisco Medical Center, San Francisco, CA
| | - Peter Friend
- Nuffield Department of Surgical Sciences and Oxford Centre for Diabetes, Endocrinology, and Metabolism, University of Oxford, Oxford, United Kingdom
| | - Mitsukazu Gotoh
- Department of Surgery, Fukushima Medical University, Fukushima, Japan
| | - David K. C. Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA
| | - Chung-Gyu Park
- Xenotransplantation Research Center, Department of Microbiology and Immunology, Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Phillip O'Connell
- The Center for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney at Westmead Hospital, Westmead, NSW, Australia
| | - Cherie Stabler
- Diabetes Research Institute, School of Medicine, University of Miami, Coral Gables, FL
| | - Shinichi Matsumoto
- National Center for Global Health and Medicine, Tokyo, Japan
- Otsuka Pharmaceutical Factory inc, Naruto Japan
| | - Barbara Ludwig
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Paul Langerhans Institute Dresden of Helmholtz Centre Munich at University Clinic Carl Gustav Carus of TU Dresden and DZD-German Centre for Diabetes Research, Dresden, Germany
| | - Pratik Choudhary
- Diabetes Research Group, King's College London, Weston Education Centre, London, United Kingdom
| | - Boris Kovatchev
- University of Virginia, Center for Diabetes Technology, Charlottesville, VA
| | - Michael R. Rickels
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Megan Sykes
- Columbia Center for Translational Immunology, Coulmbia University Medical Center, New York, NY
| | - Kathryn Wood
- Nuffield Department of Surgical Sciences and Oxford Centre for Diabetes, Endocrinology, and Metabolism, University of Oxford, Oxford, United Kingdom
| | - Kristy Kraemer
- National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Albert Hwa
- Juvenile Diabetes Research Foundation, New York, NY
| | - Edward Stanley
- Murdoch Children's Research Institute, Parkville, VIC, Australia
- Monash University, Melbourne, VIC, Australia
| | - Camillo Ricordi
- Diabetes Research Institute, School of Medicine, University of Miami, Coral Gables, FL
| | - Mark Zimmerman
- BetaLogics, a business unit in Janssen Research and Development LLC, Raritan, NJ
| | - Julia Greenstein
- Discovery Research, Juvenile Diabetes Research Foundation New York, NY
| | - Eduard Montanya
- Bellvitge Biomedical Research Institute (IDIBELL), Hospital Universitari Bellvitge, CIBER of Diabetes and Metabolic Diseases (CIBERDEM), University of Barcelona, Barcelona, Spain
| | - Timo Otonkoski
- Children's Hospital and Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
| |
Collapse
|
24
|
Glycemia, Hypoglycemia, and Costs of Simultaneous Islet-Kidney or Islet After Kidney Transplantation Versus Intensive Insulin Therapy and Waiting List for Islet Transplantation. Transplantation 2016; 99:2174-80. [PMID: 25905979 DOI: 10.1097/tp.0000000000000720] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Long-term data of patients with type 1 diabetes mellitus (T1D) after simultaneous islet-kidney (SIK) or islet-after-kidney transplantation (IAK) are rare and have never been compared to intensified insulin therapy (IIT). METHODS Twenty-two patients with T1D and end-stage renal failure undergoing islet transplantation were compared to 70 patients matched for age and diabetes duration treated with IIT and to 13 patients with kidney transplantation alone or simultaneous pancreas-kidney after loss of pancreas function (waiting list for IAK [WLI]). Glycemic control, severe hypoglycemia, insulin requirement, and direct medical costs were analyzed. RESULTS Glycated hemoglobin decreased significantly from 8.2 ± 1.5 to 6.7 ± 0.9% at the end of follow-up (mean 7.2 ± 2.5 years) in the SIK/IAK and remained constant in IIT (7.8 ± 1.0% and 7.6 ± 1.0) and WLI (7.8 ± 0.8 and 7.9 ± 1.0%). Daily insulin requirement decreased from 0.53 ± 0.15 to 0.29 ± 0.26 U/kg and remained constant in IIT (0.59 ± 0.19 and 0.58 ± 0.23 U/kg) and in WLI (0.76 ± 0.28 and 0.73 ± 0.11 U/kg). Severe hypoglycemia dropped in SIK/IAK from 4.5 ± 9.7 to 0.3 ± 0.7/patient-year and remained constant in IIT (0.1 ± 0.7 and 0.2 ± 0.8/patient-year). Detailed cost analysis revealed US $57,525 of additional cost for islet transplantation 5 years after transplantation. Based on a 5- and 10-year analysis, cost neutrality is assumed to be achieved 15 years after transplantation. CONCLUSIONS This long-term cohort with more than 7 years of follow-up shows that glycemic control in patients with T1D after SIK/IAK transplantation improved, and the rate of severe hypoglycemia decreased significantly as compared to control groups. Cost analysis revealed that islet transplantation is estimated to be cost neutral at 15 years after transplantation.
Collapse
|
25
|
Choudhary P, Rickels MR, Senior PA, Vantyghem MC, Maffi P, Kay TW, Keymeulen B, Inagaki N, Saudek F, Lehmann R, Hering BJ. Evidence-informed clinical practice recommendations for treatment of type 1 diabetes complicated by problematic hypoglycemia. Diabetes Care 2015; 38:1016-29. [PMID: 25998294 PMCID: PMC4439532 DOI: 10.2337/dc15-0090] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Problematic hypoglycemia, defined as two or more episodes per year of severe hypoglycemia or as one episode associated with impaired awareness of hypoglycemia, extreme glycemic lability, or major fear and maladaptive behavior, is a challenge, especially for patients with long-standing type 1 diabetes. Individualized therapy for such patients should include a composite target: optimal glucose control without problematic hypoglycemia. Therefore, we propose a tiered, four-stage algorithm based on evidence of efficacy given the limitations of educational, technological, and transplant interventions. All patients with problematic hypoglycemia should undergo structured or hypoglycemia-specific education programs (stage 1). Glycemic and hypoglycemia treatment targets should be individualized and reassessed every 3-6 months. If targets are not met, one diabetes technology-continuous subcutaneous insulin infusion or continuous glucose monitoring-should be added (stage 2). For patients with continued problematic hypoglycemia despite education (stage 1) and one diabetes technology (stage 2), sensor-augmented insulin pumps preferably with an automated low-glucose suspend feature and/or very frequent contact with a specialized hypoglycemia service can reduce hypoglycemia (stage 3). For patients whose problematic hypoglycemia persists, islet or pancreas transplant should be considered (stage 4). This algorithm provides an evidence-informed approach to resolving problematic hypoglycemia; it should be used as a guide, with individual patient circumstances directing suitability and acceptability to ensure the prudent use of technology and scarce transplant resources. Standardized reporting of hypoglycemia outcomes and inclusion of patients with problematic hypoglycemia in studies of new interventions may help to guide future therapeutic strategies.
Collapse
Affiliation(s)
| | - Michael R Rickels
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Peter A Senior
- Department of Medicine, Division of Endocrinology, University of Alberta, Edmonton, Canada
| | - Marie-Christine Vantyghem
- Endocrinology and Metabolism Department, INSERM U1190, European Genomics Institute for Diabetes, Lille University Hospital, Lille Cedex, France
| | - Paola Maffi
- Diabetes Research Institute, Scientific Institute Ospedale San Raffaele, Milan, Italy
| | - Thomas W Kay
- Immunology and Diabetes Unit, St. Vincent's Institute, University of Melbourne, Melbourne, Australia
| | - Bart Keymeulen
- Diabetes Clinic and Research Center, Vrije Universiteit Brussel, Brussels, Belgium
| | - Nobuya Inagaki
- Department of Diabetes and Clinical Nutrition, Kyoto University, Kyoto, Japan
| | - Frantisek Saudek
- Diabetes Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Roger Lehmann
- Department of Endocrinology and Diabetology, University of Zurich, Zurich, Switzerland
| | - Bernhard J Hering
- Schulze Diabetes Institute and Department of Surgery, University of Minnesota, Minneapolis, MN
| |
Collapse
|
26
|
Lehmann R, Graziano J, Brockmann J, Pfammatter T, Kron P, de Rougemont O, Mueller T, Zuellig RA, Spinas GA, Gerber PA. Glycemic Control in Simultaneous Islet-Kidney Versus Pancreas-Kidney Transplantation in Type 1 Diabetes: A Prospective 13-Year Follow-up. Diabetes Care 2015; 38:752-9. [PMID: 25665814 DOI: 10.2337/dc14-1686] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 01/06/2015] [Indexed: 02/03/2023]
Abstract
OBJECTIVE In patients with type 1 diabetes and end-stage renal disease, combined transplantation of a kidney together with a pancreas or isolated pancreatic islets are options to improve glycemic control. The aim of this study was to compare their long-term outcome with regard to metabolic control and surgical complication rate, as well as function of the transplanted kidney. RESEARCH DESIGN AND METHODS We conducted a prospective cohort study in consecutive patients receiving either a pancreas or islet transplant simultaneously with or after kidney transplantation (simultaneous pancreas-kidney [SPK]/pancreas-after-kidney [PAK] or simultaneous islet-kidney [SIK]/islet-after-kidney [IAK] transplantation). RESULTS Ninety-four patients who had undergone SPK/PAK transplantation were compared with 38 patients who had undergone SIK/IAK transplantation over a period of up to 13 years. HbA1c levels declined from 7.8 ± 1.3% (62 ± 14 mmol/mol) to 5.9 ± 1.1% (41 ± 12 mmol/mol), and from 8.0 ± 1.3% (64 ± 14 mmol/mol) to 6.5 ± 1.1% (48 ± 12 mmol/mol), respectively, in the SPK/PAK and SIK/IAK groups (P < 0.001 for both) and remained stable during follow-up, despite a reduction in the rate of severe hypoglycemia by >90%. The 5-year insulin independence rate was higher in the SPK/PAK group (73.6 vs. 9.3% in the SIK/IAK group), as was the rate of relaparotomy after transplantation (41.5 vs. 10.5% in the SIK/IAK group). There was no difference in the rate of kidney function decline. CONCLUSIONS During a long-term follow-up, SPK/PAK transplantation as well as SIK/IAK transplantation resulted in a sustained improvement of glycemic control with a slightly higher glycated hemoglobin level in the SIK/IAK group. While insulin independence is more common in whole-organ pancreas recipients, islet transplantation can be conducted with a much lower surgical complication rate and no difference in kidney function decline.
Collapse
Affiliation(s)
- Roger Lehmann
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Zurich, Switzerland
| | - Jessica Graziano
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Zurich, Switzerland
| | - Jens Brockmann
- Division of Transplantation Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Thomas Pfammatter
- Division of Radiology, University Hospital Zurich, Zurich, Switzerland
| | - Philipp Kron
- Division of Transplantation Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Olivier de Rougemont
- Division of Transplantation Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Thomas Mueller
- Division of Nephrology, University Hospital Zurich, Zurich, Switzerland
| | - Richard A Zuellig
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Zurich, Switzerland
| | - Giatgen A Spinas
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Zurich, Switzerland
| | - Philipp A Gerber
- Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital Zurich, Zurich, Switzerland
| |
Collapse
|
27
|
Xu L, Yang F, Wang J, Huang H, Huang Y. Anti-diabetic effect mediated by Ramulus mori polysaccharides. Carbohydr Polym 2015; 117:63-69. [DOI: 10.1016/j.carbpol.2014.09.052] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 09/16/2014] [Accepted: 09/18/2014] [Indexed: 11/28/2022]
|
28
|
Jiang AT, BHSc, Rowe N, Sener A, Luke P. Simultaneous pancreas-kidney transplantation: The role in the treatment of type 1 diabetes and end-stage renal disease. Can Urol Assoc J 2014; 8:135-8. [PMID: 24839485 DOI: 10.5489/cuaj.1597] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Type 1 diabetes mellitus (DM) is one of the most common and debilitating diseases to affect the world. Many patients are afflicted by microvascular and macrovascular complications, and succumb to end-stage renal disease (ESRD). Although dialysis and insulin therapy provides better glycemic control, it nonetheless significantly decreases a patient's quality of life. Moreover, they cannot reverse ESRD or alleviate complications. Simultaneous pancreas-kidney (SPK) transplantation has revolutionized the way we manage type 1 DM; it provides a physiological means of achieving normoglycemia while rendering patients free of dialysis. Understanding this procedure is important because it is becoming a more common management strategy for patients with type 1 DM. In this review, we will begin with a brief summary of type 1 DM, followed by a comprehensive description of SPK procedure, including the history and technique. We will then present the outcomes of transplantation.
Collapse
Affiliation(s)
- Alex T Jiang
- Department of Surgery, Division of Urology; Schulich School of Medicine and Dentistry, Western University, London, ON
| | - BHSc
- Department of Surgery, Division of Urology; Schulich School of Medicine and Dentistry, Western University, London, ON
| | - Neal Rowe
- Department of Surgery, Division of Urology, Western University; Multi-Organ Transplant Program, London Health Sciences Center, London, ON
| | - Alp Sener
- Department of Surgery, Division of Urology, Western University; Multi-Organ Transplant Program; Matthew Mailing Centre for Translational Transplant Studies, London Health Sciences Centre; Department of Microbiology and Immunology; Centre for Human Immunology; Western University, London, ON
| | - Patrick Luke
- Department of Surgery, Division of Urology, Western University; Multi-Organ Transplant Program; Matthew Mailing Centre for Translational Transplant Studies, London Health Sciences Centre; Department of Microbiology and Immunology; Centre for Human Immunology; Western University, London, ON
| |
Collapse
|
29
|
|
30
|
Mittal S, Johnson P, Friend P. Pancreas transplantation: solid organ and islet. Cold Spring Harb Perspect Med 2014; 4:a015610. [PMID: 24616200 DOI: 10.1101/cshperspect.a015610] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transplantation of the pancreas, either as a solid organ or as isolated islets of Langerhans, is indicated in a small proportion of patients with insulin-dependent diabetes in whom severe complications develop, particularly severe glycemic instability and progressive secondary complications (usually renal failure). The potential to reverse diabetes has to be balanced against the morbidity of long-term immunosuppression. For a patient with renal failure, the treatment of choice is often a simultaneous transplant of the pancreas and kidney (SPK), whereas for a patient with glycemic instability, specifically hypoglycemic unawareness, the choice between a solid organ and an islet transplant has to be individual to the patient. Results of SPK transplantation are comparable to other solid-organ transplants (kidney, liver, heart) and there is evidence of improved quality of life and life expectancy, but the results of solitary pancreas transplantation and islets are inferior with respect to graft survival. There is some evidence of benefit with respect to the progression of secondary diabetic complications in patients with functioning transplants for several years.
Collapse
Affiliation(s)
- Shruti Mittal
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford OX3 9DU, United Kingdom
| | | | | |
Collapse
|
31
|
Vantyghem MC, Defrance F, Quintin D, Leroy C, Raverdi V, Prévost G, Caiazzo R, Kerr-Conte J, Glowacki F, Hazzan M, Noel C, Pattou F, Diamenord ASB, Bresson R, Bourdelle-Hego MF, Cazaubiel M, Cordonnier M, Delefosse D, Dorey F, Fayard A, Fermon C, Fontaine P, Gillot C, Haye S, Le Guillou AC, Karrouz W, Lemaire C, Lepeut M, Leroy R, Mycinski B, Parent E, Siame C, Sterkers A, Torres F, Verier-Mine O, Verlet E, Desailloud R, Dürrbach A, Godin M, Lalau JD, Lukas-Croisier C, Thervet E, Toupance O, Reznik Y, Westeel PF. Treating diabetes with islet transplantation: lessons from the past decade in Lille. DIABETES & METABOLISM 2014; 40:108-19. [PMID: 24507950 DOI: 10.1016/j.diabet.2013.10.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 09/29/2013] [Accepted: 10/07/2013] [Indexed: 01/10/2023]
Abstract
Type 1 diabetes (T1D) is due to the loss of both beta-cell insulin secretion and glucose sensing, leading to glucose variability and a lack of predictability, a daily issue for patients. Guidelines for the treatment of T1D have become stricter as results from the Diabetes Control and Complications Trial (DCCT) demonstrated the close relationship between microangiopathy and HbA1c levels. In this regard, glucometers, ambulatory continuous glucose monitoring, and subcutaneous and intraperitoneal pumps have been major developments in the management of glucose imbalance. Besides this technological approach, islet transplantation (IT) has emerged as an acceptable safe procedure with results that continue to improve. Research in the last decade of the 20th century focused on the feasibility of islet isolation and transplantation and, since 2000, the success and reproducibility of the Edmonton protocol have been proven, and the mid-term (5-year) benefit-risk ratio evaluated. Currently, a 5-year 50% rate of insulin independence can be expected, with stabilization of microangiopathy and macroangiopathy, but the possible side-effects of immunosuppressants, limited availability of islets and still limited duration of insulin independence restrict the procedure to cases of brittle diabetes in patients who are not overweight or have no associated insulin resistance. However, various prognostic factors have been identified that may extend islet graft survival and reduce the number of islet injections required; these include graft quality, autoimmunity, immunosuppressant regimen and non-specific inflammatory reactions. Finally, alternative injection sites and unlimited sources of islets are likely to make IT a routine procedure in the future.
Collapse
Affiliation(s)
- M-C Vantyghem
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France; Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France.
| | - F Defrance
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - D Quintin
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - C Leroy
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - V Raverdi
- Endocrine Surgery Department, Lille University Hospital, Lille, France
| | - G Prévost
- Endocrinology Department, Rouen University Hospital, Rouen, France
| | - R Caiazzo
- Endocrine Surgery Department, Lille University Hospital, Lille, France
| | - J Kerr-Conte
- Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France
| | - F Glowacki
- Nephrology Department, Lille University Hospital, Lille, France
| | - M Hazzan
- Nephrology Department, Lille University Hospital, Lille, France
| | - C Noel
- Nephrology Department, Lille University Hospital, Lille, France
| | - F Pattou
- Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France; Endocrine Surgery Department, Lille University Hospital, Lille, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Brooks AM, Walker N, Aldibbiat A, Hughes S, Jones G, de Havilland J, Choudhary P, Huang GC, Parrott N, McGowan NWA, Casey J, Mumford L, Barker P, Burling K, Hovorka R, Walker M, Smith RM, Forbes S, Rutter MK, Amiel S, Rosenthal MJ, Johnson P, Shaw JAM. Attainment of metabolic goals in the integrated UK islet transplant program with locally isolated and transported preparations. Am J Transplant 2013; 13:3236-43. [PMID: 24119216 DOI: 10.1111/ajt.12469] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 08/02/2013] [Accepted: 08/10/2013] [Indexed: 01/25/2023]
Abstract
The objective was to determine whether metabolic goals have been achieved with locally isolated and transported preparations over the first 3 years of the UK's nationally funded integrated islet transplant program. Twenty islet recipients with C-peptide negative type 1 diabetes and recurrent severe hypoglycemia consented to the study, including standardized meal tolerance tests. Participants received a total of 35 infusions (seven recipients: single graft; 11 recipients: two grafts: two recipients: three grafts). Graft function was maintained in 80% at [median (interquartile range)] 24 (13.5-36) months postfirst transplant. Severe hypoglycemia was reduced from 20 (7-50) episodes/patient-year pretransplant to 0.3 (0-1.6) episodes/patient-year posttransplant (p < 0.001). Resolution of impaired hypoglycemia awareness was confirmed [pretransplant: Gold score 6 (5-7); 24 (13.5-36) months: 3 (1.5-4.5); p < 0.03]. Target HbA1c of <7.0% was attained/maintained in 70% of recipients [pretransplant: 8.0 (7.0-9.6)%; 24 (13.5-36) months: 6.2 (5.7-8.4)%; p < 0.001], with 60% reduction in insulin dose [pretransplant: 0.51 (0.41-0.62) units/kg; 24 (13.5-36) months: 0.20 (0-0.37) units/kg; p < 0.001]. Metabolic outcomes were comparable 12 months posttransplant in those receiving transported versus only locally isolated islets [12 month stimulated C-peptide: transported 788 (114-1764) pmol/L (n = 9); locally isolated 407 (126-830) pmol/L (n = 11); p = 0.32]. Metabolic goals have been attained within the equitably available, fully integrated UK islet transplant program with both transported and locally isolated preparations.
Collapse
Affiliation(s)
- A M Brooks
- Institute of Cellular Medicine, Newcastle University, Newcastle, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Greffe de pancréas et d’îlots de Langerhans. Can J Diabetes 2013. [DOI: 10.1016/j.jcjd.2013.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
34
|
Barlow AD, Nicholson ML, Herbert TP. Evidence for rapamycin toxicity in pancreatic β-cells and a review of the underlying molecular mechanisms. Diabetes 2013; 62:2674-82. [PMID: 23881200 PMCID: PMC3717855 DOI: 10.2337/db13-0106] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rapamycin is used frequently in both transplantation and oncology. Although historically thought to have little diabetogenic effect, there is growing evidence of β-cell toxicity. This Review draws evidence for rapamycin toxicity from clinical studies of islet and renal transplantation, and of rapamycin as an anticancer agent, as well as from experimental studies. Together, these studies provide evidence that rapamycin has significant detrimental effects on β-cell function and survival and peripheral insulin resistance. The mechanism of action of rapamycin is via inhibition of mammalian target of rapamycin (mTOR). This Review describes the complex mTOR signaling pathways, which control vital cellular functions including mRNA translation, cell proliferation, cell growth, differentiation, angiogenesis, and apoptosis, and examines molecular mechanisms for rapamycin toxicity in β-cells. These mechanisms include reductions in β-cell size, mass, proliferation and insulin secretion alongside increases in apoptosis, autophagy, and peripheral insulin resistance. These data bring into question the use of rapamycin as an immunosuppressant in islet transplantation and as a second-line agent in other transplant recipients developing new-onset diabetes after transplantation with calcineurin inhibitors. It also highlights the importance of close monitoring of blood glucose levels in patients taking rapamycin as an anticancer treatment, particularly those with preexisting glucose intolerance.
Collapse
Affiliation(s)
- Adam D Barlow
- Department of Transplant Surgery, University Hospitals of Leicester, Leicester, UK.
| | | | | |
Collapse
|
35
|
|
36
|
Fujikura J, Hosoda K, Nakao K. Cell transplantation therapy for diabetes mellitus: endocrine pancreas and adipocyte. Endocr J 2013; 60:697-708. [PMID: 23719783 DOI: 10.1507/endocrj.ej13-0162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Experimental transplantation of endocrine tissues has led to significant advances in our understanding of endocrinology and metabolism. Endocrine cell transplantation therapy is expected to be applied to the treatment of metabolic endocriopathies. Restoration of functional pancreatic beta-cell mass or of functional adipose mass are reasonable treatment approaches for patients with diabetes or lipodystrophy, respectively. Human induced pluripotent stem (iPS) cell research is having a great impact on life sciences. Doctors Takahashi and Yamanaka discovered that the forced expression of a set of genes can convert mouse and human somatic cells into a pluripotent state [1, 2]. These iPS cells can differentiate into a variety of cell types. Therefore, iPS cells from patients may be a potential cell source for autologous cell replacement therapy. This review briefly summarizes the current knowledge about transplantation therapy for diabetes mellitus, the development of the endocrine pancreas and adipocytes, and endocrine-metabolic disease-specific iPS cells.
Collapse
Affiliation(s)
- Junji Fujikura
- Division of Endocrinology and Metabolism, Kyoto University Hospital, Kyoto 606-8507, Japan.
| | | | | |
Collapse
|
37
|
Impact of the number of infusions on 2-year results of islet-after-kidney transplantation in the GRAGIL network. Transplantation 2011; 92:1031-8. [PMID: 21926944 DOI: 10.1097/tp.0b013e318230c236] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Insulin independence after islet transplantation is generally achieved after multiple infusions. However, single infusion would increase the number of recipients. Our aim was to evaluate the results of islet-after-kidney transplantation according to the number of infusions. METHODS Islets were isolated at the Geneva University, shipped, and transplanted into French patients from the Swiss-French GRAGIL network, on the "Edmonton" immunosuppression protocol between 2004 and 2010. RESULTS Nineteen patients were transplanted with 33 preparations. Fifteen patients reached 24 months follow-up; eight subjects were single-graft recipients and seven were double-graft recipients. Finally, single-graft recipients received a median of 5312 islet equivalents/kg (5186-6388) vs. 10,564 (10,054-11,375) for double-graft recipients (P=0.0003) with similar islet mass at first infusion. Insulin independence was achieved in five of eight single-graft subjects (62.5%) versus five of seven in double-graft subjects (71.4%), not significant. Median insulin independence duration was 4.7 (3.1-15.2) months after one infusion vs. 19 (9.6-20.8) months after two infusions (not significant). At 24 months posttransplant, comparing single- with double-graft patients, insulin doses were 0.23 (0.11-0.34) U/kg vs. 0.02 (0.0-0.23) U/kg, P=0.11; HbA1c was 6.5% (5.9%-6.8%) vs. 6.2% (5.9%-6.3%), P=0.16; and basal C-peptide was 302 (143-480) pmol/L vs. 599 (393-806) pmol/L, P=0.05. Only 37.5% of single-graft patients had a β-score ≥4 compared with 100% of double-graft patients (P=0.03). Two recipients experienced postinfusion bleeding, and two patients (13%) showed renal dysfunction in the absence of biopsy-proven rejection. CONCLUSIONS One infusion achieves good glycemic control and sometimes insulin independence. However, double-graft patients remain insulin-free longer, tend to have lower HbA1c, and show better graft function 24 months after transplant.
Collapse
|
38
|
Abstract
Insulin represents a life-saving therapy for patients with type 1 diabetes but, despite appropriate treatment, it prevents only partially long-term diabetic complications, while generating fatal hypoglycemic episodes. Islet transplantation gained attention because of its safety, effectiveness, and minimal invasiveness; however it remains a procedure reserved for a selected group of patients. The introduction of the Edmonton Protocol in 2000, based on a newly designed steroid-free immunosuppressive protocol, revamped the course of islet transplantation. The main goal of islet transplantation remains insulin independence, although the effect of islet transplantation can be more comprehensively evaluated in terms of frequency of hypoglycemic episodes and impact on diabetic complications and quality of life. Islet transplantation was shown to have positive consequences on cardiovascular, renal, neurologic, and ocular diabetic complications. The proof of concept for cellular replacement therapy in diabetes has been established with islet transplantation, it only needs to be improved and rendered widely available.
Collapse
Affiliation(s)
- Roberto Bassi
- Transplantation Research Center, Nephrology Division, Children's Hospital/Harvard Medical School, Boston, MA 02115, USA.
| | | |
Collapse
|
39
|
Maffi P, Scavini M, Socci C, Piemonti L, Caldara R, Gremizzi C, Melzi R, Nano R, Orsenigo E, Venturini M, Staudacher C, Del Maschio A, Secchi A. Risks and benefits of transplantation in the cure of type 1 diabetes: whole pancreas versus islet transplantation. A single center study. Rev Diabet Stud 2011; 8:44-50. [PMID: 21720672 DOI: 10.1900/rds.2011.8.44] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Pancreas and islet transplantation are the only available options to replace beta-cell function in patients with type 1 diabetes. Great variability in terms of rate of success for both approaches is reported in the literature and it is difficult to compare the respective risks and benefits. OBJECTIVES The aim of this study was to analyze risks and benefits of pancreas transplantation alone (PTA) and islet transplantation alone (ITA) by making use of the long-term experience of a single center where both transplantations are performed. We focused on the risks and benefits of both procedures, with the objective of better defining indications and providing evidence to support the decision-making process. The outcomes of 33 PTA and 33 ITA were analyzed, and pancreas and islet function (i.e., insulin independence), perioperative events, and long-term adverse events were recorded. RESULTS We observed a higher rate of insulin independence in PTA (75%) versus ITA (59%), with the longer insulin independence among PTA patients receiving tacrolimus. The occurrence of adverse events was higher for PTA patients in terms of hospitalization length and frequency, re-intervention for surgical and immunological acute complications, CMV reactivation, and other infections. CONCLUSIONS In conclusion, these results support the practice of listing patients for PTA when the metabolic control and the progression of chronic complications require a rapid normalization of glucose levels, with the exception of patients with cardiovascular disease, because of the high surgical risks. ITA is indicated when replacement of beta-cell mass is needed in patients with a high surgical risk.
Collapse
Affiliation(s)
- Paola Maffi
- Diabetes Research Institute, San Raffaele Scientific Institute, Via Olgettina 60, 20132 Milano, Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Kim JH. Transplantation Options in Type 1 Diabetes with End Stage Renal Disease. KOREAN JOURNAL OF TRANSPLANTATION 2010. [DOI: 10.4285/jkstn.2010.24.2.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Jae Hyeon Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
41
|
Abstract
PURPOSE OF REVIEW The aim of this article is to review recent reports on whole pancreas and islet cell transplantation. It focuses on 'what the call to the future looks like' for both therapies as treatment options for those type 1 diabetes patients who do not respond well to conventional therapy. RECENT FINDINGS The major benefit of pancreas transplantation is the reversal of diabetes improvement of diabetes complications. Although the procedure requires major surgery and life-long immunosuppression, it remains the gold standard for a specific population of patients who suffer from type 1 diabetes and who do not respond to conventional therapy. Allogeneic islet transplantation is a promising alternative to pancreas transplantation, but patient outcomes remain less than optimal and significant progress is required in order for this procedure to be considered a reliable therapy. CONCLUSION Several factors have to be taken into consideration before making the decision of which of these procedures would better suit a patient with type 1 diabetes.
Collapse
|
42
|
Cornolti R, Cattaneo I, Trudu M, Figliuzzi M, Remuzzi A. Effect of islet transplantation on metabolic glucose control in rats with diabetes. Diabetes Technol Ther 2009; 11:805-11. [PMID: 20001682 DOI: 10.1089/dia.2009.0068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Transplantation of pancreatic islets has been extensively investigated as a strategy for glycemic control in experimental animals and in patients with diabetes. We investigated whether islet transplantation allows us to obtain adequate islet function during glucose stimulation using a continuous glucose monitoring system (CGMS) in the rat. METHODS We investigated four groups of eight rats each: healthy rats (controls), rats with diabetes, and rats with diabetes transplanted with microencapsulated islets in the peritoneal cavity or transplanted with free islets under the kidney capsule. Syngeneic islets were isolated from Lewis rats. After diabetes induction and islet implantation, when glycemia was stable, a glucose sensor was implanted, and an intraperitoneal glucose tolerance test (IPGTT) was performed to evaluate islet function. Interstitial glucose levels were analyzed, using a theoretical model, to estimate kinetics of glucose metabolism. RESULTS Islet transplantation was effective in inducing normoglycemia in both groups, but results of IPGTTs showed that in animals with islets transplanted in microcapsules values of area under the curve and total glucose elimination constant (k(tot)) were significantly different from those in control animals and that these differences were even more important in animals with islets implanted under the kidney capsule. CONCLUSIONS Our present investigation demonstrates that the application of CGMS was effective in evaluation of glucose metabolism by islet transplantation and indicates that efficient diabetes control can be achieved with this technology.
Collapse
Affiliation(s)
- Roberta Cornolti
- Department of Biomedical Engineering, Mario Negri Institute for Pharmacological Research, Bergamo, Italy.
| | | | | | | | | |
Collapse
|
43
|
Correlation of Rapid Phenotypic Changes and Insulin Production of Differentiated Human Adipose Tissue-Derived Stem Cells. Ann Plast Surg 2009; 63:436-40. [DOI: 10.1097/sap.0b013e31818c4b0c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
44
|
Vantyghem MC, Balavoine AS, Kerr-Conte J, Pattou F, Noel C. Who should benefit from diabetes cell therapy? ANNALES D'ENDOCRINOLOGIE 2009; 70:443-8. [PMID: 19744642 DOI: 10.1016/j.ando.2009.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Accepted: 08/08/2009] [Indexed: 10/20/2022]
Abstract
Type 1 diabetes are intrinsically unstable conditions because of the loss of both insulin secretion and glucose sensing. Guidelines to treat type 1 diabetes have become stricter since the Diabetes Control and Complications Trial (DCCT) results demonstrated the close relationship between microangiopathy and HbA1c levels, whereas the deleterious role of glucose variability on macroangiopathy has been more recently suspected. Therapeutic strategies first require the treatment of underlying organic causes of the brittleness whenever possible and, secondly, the optimization of insulin therapy using analogues, multiple injections and consideration of continuous subcutaneous insulin infusion. Alternative approaches may still be needed for the most severely affected patients, including islet transplantation. We propose islet after kidney transplantation in diabetic patients with end-stage kidney disease ineligible for double kidney-pancreas transplantation (i.e C peptide negative patients over 45 years of age or with severe macroangiopathy) if creatinine blood levels are stable below 20mg/l at least six months after kidney transplantation and steroid discontinuation. Islet transplantation alone is proposed to (1) C peptide negative diabetic patients, (2) aged 18-65 with a duration of diabetes of at least five years, (3) treated with intensive subcutaneous insulin therapy, but unable to obtain a glycated hemoglobin level below 7% without hypoglycemia and / or with brittleness and unpredictable hyper- and hypoglycemia altering quality of life, (4) with normal body weight (< 80 kg) and / or low daily insulin needs (the lower, the better), (5) with renal function close to normal (creatinine clearance above 60 ml/min with albuminuria lower than 300 mg/24 h), (6) with no desire for pregnancy in women. Currently and until more complete assessment of the 5-year overall benefit-risk ratio, islet transplantation remains a clinical research procedure. As already provided for other types of transplantation, and once recognized as a "routine" procedure, prioritization of enlisted patients for islet transplantation could be aided by the calculation of a score that should be determined by a multidisciplinary team.
Collapse
Affiliation(s)
- M C Vantyghem
- INSERM U 859, Endocrinology and Metabolism, Endocrine Surgery and Nephrology Department, Lille University Hospital, 59037 Lille cedex, France.
| | | | | | | | | |
Collapse
|
45
|
Vantyghem MC, Kerr-Conte J, Arnalsteen L, Sergent G, Defrance F, Gmyr V, Declerck N, Raverdy V, Vandewalle B, Pigny P, Noel C, Pattou F. Primary graft function, metabolic control, and graft survival after islet transplantation. Diabetes Care 2009; 32:1473-8. [PMID: 19638525 PMCID: PMC2713623 DOI: 10.2337/dc08-1685] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To investigate the influence of primary graft function (PGF) on graft survival and metabolic control after islet transplantation with the Edmonton protocol. RESEARCH DESIGN AND METHODS A total of 14 consecutive patients with brittle type 1 diabetes were enrolled in this phase 2 study and received median 12,479 islet equivalents per kilogram of body weight (interquartile range 11,072-15,755) in two or three sequential infusions within 67 days (44-95). PGF was estimated 1 month after the last infusion by the beta-score, a previously validated index (range 0-8) based on insulin or oral treatment requirements, plasma C-peptide, blood glucose, and A1C. Primary outcome was graft survival, defined as insulin independence with A1C < or =6.5%. RESULTS All patients gained insulin independence within 12 days (6-23) after the last infusion. PGF was optimal (beta-score > or =7) in nine patients and suboptimal (beta-score < or =6) in five. At last follow-up, 3.3 years (2.8-4.0) after islet transplantation, eight patients (57%) remained insulin independent with A1C < or =6.5%, including seven patients with optimal PGF (78%) and one with suboptimal PGF (20%) (P = 0.01, log-rank test). Graft survival was not significantly influenced by HLA mismatches or by preexisting islet autoantibodies. A1C, mean glucose, glucose variability (assessed with continuous glucose monitoring system), and glucose tolerance (using an oral glucose tolerance test) were markedly improved when compared with baseline values and were significantly lower in patients with optimal PGF than in those with suboptimal PGF. CONCLUSIONS Optimal PGF was associated with prolonged graft survival and better metabolic control after islet transplantation. This early outcome may represent a valuable end point in future clinical trials.
Collapse
|
46
|
Mineo D, Sageshima J, Burke GW, Ricordi C. Minimization and withdrawal of steroids in pancreas and islet transplantation. Transpl Int 2008; 22:20-37. [PMID: 18855850 DOI: 10.1111/j.1432-2277.2008.00761.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
For reducing the corticosteroid (CS)-related side-effects, especially cardiovascular events, CS-sparing protocols have become increasingly common in pancreas transplantation (PT). Lympho-depleting induction antibodies, such as rabbit anti-thymocyte globulin (rATG) or alemtuzumab, have been widely used in successful trials. The results of various CS-sparing protocols combining calcineurin inhibitors (CNI) and mycophenolate or sirolimus, have been mixed for rejection and survival rates. Most of the studies were uncontrolled trials of low-risk patients, therefore the grade of evidence is limited. Large-scale prospective studies with long-term follow up are necessary to assess risks and benefits of CS-sparing regimens in PT before recommending such strategies as standard practice. Islet allo-transplantation for patients with brittle type 1 diabetes mellitus, less invasive and safer procedure than PT, has been attempted since late 1980s, but diabetogenic immunosuppressants at maintenance, mainly CS and high-dose CNI, prevented satisfactory results (10% insulin-independence at 1-year post-transplant). Since 2000, CS-free and CNI-reducing protocols, including more potent induction [daclizumab, OKT3gamma1(ala-ala) anti-CD3 antibody, rATG] and maintenance (sirolimus, mycophenolate) agents, have significantly improved short-term outcomes whereas long-term are still inadequate (from 80% to 20% insulin-independence from 1- to 5-year post-transplant). Main limitations are allo- and autoimmunity, immunosuppression-related islet and systemic toxicity and transplant site unsuitability, which tolerogenic protocols and biotechnological solutions may solve.
Collapse
Affiliation(s)
- Davide Mineo
- Diabetes Research Institute, University of Miami, FL 33136, USA
| | | | | | | |
Collapse
|
47
|
|
48
|
Lehmann R, Spinas GA, Moritz W, Weber M. Has time come for new goals in human islet transplantation? Am J Transplant 2008; 8:1096-100. [PMID: 18444937 DOI: 10.1111/j.1600-6143.2008.02214.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The enthusiasm regarding clinical islet transplantation has been dampened by the long-term results. Concerns about the associated risks of life-long immunosuppression and the striking imbalance between potential recipients and available donor pancreata warrant changes in some of the current goals. Islet transplantation will never be a cure of type 1 diabetes in the majority of patients with no secondary complications, but is a valid option for a limited number of patients with brittle diabetes waiting for an organ or after organ transplantation. Furthermore, insulin independence should not be the main goal of islet transplantation, but avoidance of severe hypoglycemia and good glycemic control, which can be achieved with a relatively small functional beta-cell mass. Therefore, initially one islet infusion is sufficient. Retransplantation at a later time point remains an option, if glucose control deteriorates. Efforts to improve islet transplantation should no longer focus on islet isolation and immunosuppression, but rather on the low posttransplant survival rate of islets caused by activation of the coagulation pathway and the limited oxygen delivery to the islets. Transplantation of smaller islets be it naturally small or size tailored reaggregated islets has the potential to facilitate these processes.
Collapse
Affiliation(s)
- R Lehmann
- University Hospital Zurich, Islet Transplant Program, Zurich, Switzerland.
| | | | | | | |
Collapse
|
49
|
Kabelitz D, Geissler EK, Soria B, Schroeder IS, Fändrich F, Chatenoud L. Toward cell-based therapy of type I diabetes. Trends Immunol 2008; 29:68-74. [PMID: 18182324 DOI: 10.1016/j.it.2007.11.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2007] [Revised: 11/17/2007] [Accepted: 11/21/2007] [Indexed: 01/09/2023]
Abstract
Type 1 diabetes (T1D) is an autoimmune disease that results from the destruction of insulin-producing pancreatic islet cells owing to the aggressive effector function of autoreactive T cells. In addition to lifetime supply of exogenous insulin, whole-pancreas or islet transplantation is presently the only alternative therapy for severely ill patients. Here, we discuss the current status of the development of cell-based therapies that are based on essentially two options, i.e. replacement of islet cells by islet-like cells derived from embryonic or adult stem cells, and re-establishment of immunological tolerance to islet self-antigens through regulatory T cells and/or tolerance-promoting monocyte-derived cells. A combination of both approaches will be required to turn cell-based therapy of T1D into clinical success.
Collapse
Affiliation(s)
- Dieter Kabelitz
- Institute of Immunology, University Hospital Schleswig-Holstein, Kiel, Germany.
| | | | | | | | | | | |
Collapse
|