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Suarez-Pinzon WL, Marcoux Y, Ghahary A, Rabinovitch A. Gene Transfection and Expression of Transforming Growth Factor-β1 in Nonobese Diabetic Mouse Islets Protects β-Cells in Syngeneic Islet Grafts from Autoimmune Destruction. Cell Transplant 2017. [DOI: 10.3727/000000002783985503] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Nonobese diabetic (NOD) mice develop diabetes and destroy syngeneic islet grafts through an autoimmune response. Because transforming growth factor (TGF)-β1 downregulates immune responses, we tested whether overexpression of TGF-β1 by gene transfection of NOD mouse islets could protect β-cells in islet grafts from autoimmune destruction. NOD mouse islet cells were transfected with an adenoviral DNA expression vector encoding porcine latent TGF-β1 (Ad TGF- β1) or the adenoviral vector alone (control Ad vector). The frequency of total islet cells expressing TGF-1 protein was increased from 12±1% in control Ad vector-transfected cells to 89 ± 4% in Ad TGF-β1-transfected islet cells, and the frequency of β-cells that expressed TGF-β1 was increased from 12 ± 1% to 60 ± 7%. Also, secretion of TGF-β1 was significantly increased in islets that overexpressed TGF-β1. Ad TGF-β1-transfected NOD mouse islets that overexpressed TGF-β1 prevented diabetes recurrence after transplantation into diabetic NOD mice for a median of 22 days compared with only 7 days for control Ad vector-transfected islets (p = 0.001). Immunohistochemical examination of the islet grafts revealed significantly more TGF-β1+ cells and insulin+ cells and significantly fewer CD45+ leukocytes in Ad TGF-β1-transfected islet grafts. Also, islet β-cell apoptosis was significantly decreased whereas apoptosis of graft-infiltrating leukocytes was significantly increased in Ad TGF-β1-transfected islet grafts. These observations demonstrate that overexpression of TGF-β1, by gene transfection of NOD mouse islets, protects islet β-cells from apoptosis and autoimmune destruction and delays diabetes recurrence after islet transplantation.
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Affiliation(s)
| | - Yvonne Marcoux
- Department of Surgery, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Aziz Ghahary
- Department of Surgery, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Alex Rabinovitch
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
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Olbrisch ME, Benedict SM, Haller DL, Levenson JL. Psychosocial Assessment of Living Organ Donors: Clinical and Ethical Considerations. Prog Transplant 2016; 11:40-9. [PMID: 11357556 DOI: 10.1177/152692480101100107] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This article outlines psychosocial and ethical issues to be considered when evaluating potential living organ donors. Six types of living donors are described: genetically related, emotionally related, “Good Samaritan” (both directed and nondirected), vendors, and organ exchangers. The primary domains to be assessed in the psychosocial evaluation are informed consent, motivation for donating and the decision-making process, adequacy of support (financial and social), behavioral and psychological health, and the donor-recipient relationship. Obstacles to the evaluation process include impression management, overt deception, minimization of behavioral risk factors, and cultural and language differences between the donor and the evaluator. Ethical concerns, such as the right to donate, donor autonomy, freedom from coercion, nonmaleficence and beneficence in donor selection, conflicts of interest, “reasonable” risks to donors, and recipient decision making are also explored. To fully evaluate living organ donation, studying psychosocial as well as medical outcomes is crucial.
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Affiliation(s)
- M E Olbrisch
- Medical College of Virginia of Virginia Commonwealth University, Richmond, Va., USA
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3
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Yeung JC, Wagnetz D, Cypel M, Rubacha M, Koike T, Chun YM, Hu J, Waddell TK, Hwang DM, Liu M, Keshavjee S. Ex vivo adenoviral vector gene delivery results in decreased vector-associated inflammation pre- and post-lung transplantation in the pig. Mol Ther 2012; 20:1204-11. [PMID: 22453765 DOI: 10.1038/mt.2012.57] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Acellular normothermic ex vivo lung perfusion (EVLP) is a novel method of donor lung preservation for transplantation. As cellular metabolism is preserved during perfusion, it represents a potential platform for effective gene transduction in donor lungs. We hypothesized that vector-associated inflammation would be reduced during ex vivo delivery due to isolation from the host immune system response. We compared ex vivo with in vivo intratracheal delivery of an E1-, E3-deleted adenoviral vector encoding either green fluorescent protein (GFP) or interleukin-10 (IL-10) to porcine lungs. Twelve hours after delivery, the lung was transplanted and the post-transplant function assessed. We identified significant transgene expression by 12 hours in both in vivo and ex vivo delivered groups. Lung function remained excellent in all ex vivo groups after viral vector delivery; however, as expected, lung function decreased in the in vivo delivered adenovirus vector encoding GFP (AdGFP) group with corresponding increases in IL-1β levels. Transplanted lung function was excellent in the ex vivo transduced lungs and inferior lung function was seen in the in vivo group after transplantation. In summary, ex vivo delivery of adenoviral gene therapy to the donor lung is superior to in vivo delivery in that it leads to less vector-associated inflammation and provides superior post-transplant lung function.
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Affiliation(s)
- Jonathan C Yeung
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, University of Toronto, Toronto, Ontario, Canada
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Kuttler B, Wanka H, Klöting N, Gerstmayer B, Volk HD, Sawitzki B, Ritter T. Ex vivo gene transfer of viral interleukin-10 to BB rat islets: no protection after transplantation to diabetic BB rats. J Cell Mol Med 2007; 11:868-80. [PMID: 17760846 PMCID: PMC3823263 DOI: 10.1111/j.1582-4934.2007.00059.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Allogeneic and autoimmune islet destruction limits the success of islet transplantation in autoimmune diabetic patients. This study was designed to investigate whether ex vivo gene transfer of viral interleukin-10 (vIL-10) protects BioBreeding (BB) rat islets from autoimmune destruction after transplantation into diabetic BB recipients. Islets were transduced with adenoviral constructs (Ad) expressing the enhanced green fluorescent protein (eGFP), α-1 antitrypsin (AAT) or vIL-10. Transduction efficiency was demonstrated by eGFP-positive cells and vIL-10 production. Islet function was determined in vitro by measuring insulin content and insulin secretion and in vivo by grafting AdvIL-10-transduced islets into syngeneic streptozotocin (SZ)-diabetic, congenic Lewis (LEW.1 W) rats. Finally, gene-modified BB rat islets were grafted into autoimmune diabetic BB rats. Ad-transduction efficiency of islets increased with virus titre and did not interfere with insulin content and insulin secretion. Ad-transduction did not induce Fas on islet cells. AdvIL-10-transduced LEW.1 W rat islets survived permanently in SZ-diabetic LEW.1 W rats. In diabetic BB rats AdvIL-10-transduced BB rat islets were rapidly destroyed. Prolongation of islet culture prior to transplantation improved the survival of gene-modified islets in BB rats. Several genes including those coding for chemokines and other peptides associated with inflammation were down-regulated in islets after prolonged culture, possibly contributing to improved islet graft function in vivo. Islets transduced ex vivo with vIL-10 are principally able to cure SZ-diabetic rats. Autoimmune islet destruction in diabetic BB rats is not prevented by ex vivo vIL-10 gene transfer to grafted islets. Graft survival in autoimmune diabetic rats may be enhanced by improvements in culture conditions prior to transplantation.
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Affiliation(s)
- Beate Kuttler
- Institute of Physiology, Medical School, Ernst-Moritz-Arndt-University of Greifswald, Greifswalderstrasse 11c, D-17495 Karlsburg, Germany.
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Gong N, Pleyer U, Yang J, Vogt K, Hill M, Anegon I, Volk HD, Ritter T. Influence of local and systemic CTLA4Ig gene transfer on corneal allograft survival. J Gene Med 2006; 8:459-67. [PMID: 16475216 DOI: 10.1002/jgm.876] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND To analyse the effects of local (ex vivo) or systemic (in vivo) administration of adenovirus type 5 encoding CTLA4Ig (AdCTLA4Ig) on its influence to prolong corneal allograft survival and to study the underlying mechanisms. METHODS A MHC class I/II mismatched rat corneal transplant model was used. Recipients were randomly assigned to receive ex vivo gene-modified corneas expressing either CTLA4Ig, CTLA4Ig/IL-10 or a single intraperitoneal (i.p.) injection (1.0 x 10(9) or 1.0 x 10(10) infectious particles) of AdCTLA4Ig 1 day before transplantation and graft survival was analysed. The immunoregulatory effect of this treatment was examined by analysing intra-graft cytokine mRNA expression pattern at day 12 post-transplant. The anti-adenovirus immunity also was investigated. RESULTS Ex vivo gene transfer resulted in a modest but significant prolongation of graft survival (p = 0.0036 compared to no treatment). In contrast, systemic gene therapy (1.0 x 10(9) or 1.0 x 10(10) infectious particles) significantly prolonged graft survival (p = 0.0007 and 0.0001, respectively, compared to no treatment). Systemic (1.0 x 10(10) infectious particles) therapy resulted in frequent indefinite survival of allogeneic grafts which was not observed in the other therapeutic regimens. Moreover, systemic therapy prevented the intra-graft accumulation and activation of T cells and resulted in a reduced mRNA expression of both TH1 and TH2 cytokines. The generation of anti-adenovirus antibodies was also efficiently inhibited. CONCLUSIONS CTLA4Ig gene therapy is a successful strategy for the prevention of allogeneic graft rejection in corneal transplantation. Our work has further elucidated the mechanisms of corneal allograft rejection which may lead to novel therapeutic strategies.
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Affiliation(s)
- Nianqiao Gong
- Department of Ophthalmology, Charité--University Medicine Berlin, Germany
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Kawashita Y, Fujioka H, Ohtsuru A, Kaneda Y, Kamohara Y, Kawazoe Y, Yamashita S, Kanematsu T. The efficacy and safety of gene transfer into the porcine liver in vivo by HVJ (Sendai virus) liposome. Transplantation 2006; 80:1623-9. [PMID: 16371934 DOI: 10.1097/01.tp.0000184447.88283.f3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Gene transfer systems using viral vectors are efficient; however, most viral vectors also tend to evoke immunologic reactions, thereby clinically causing serial side effects. HVJ-liposome vector is a hybrid vector consisting of liposome and an inactivated Sendai virus (Hemmagglutinating Virus of Japan [HVJ]), which has been reported to be less immunogenic and can also be repeatedly administered. We examined the usefulness of this vector for hepatic gene therapy in a pig model. METHODS Genes encoding beta-galactosidase and luciferase were used as reporter genes. The pigs were injected with the reporter gene loaded-HVJ-liposome into the portal vein under total vascular exclusion of the liver. The transfection efficiencies were then assessed by beta-galactosidase staining, a luciferase assay, and RT-PCR for LacZ mRNA. Biochemical and histologic analyses were performed to evaluate tissue toxicity after gene transfer. RESULTS The luciferase gene expression in the liver reached its highest level at 7 days after transfection. It continued to be detected up to 28 days after transfection, while all pigs remained healthy throughout the observation period. The transfection efficiency was 15% in the hepatocytes according to beta-galactosidase staining. Extrahepatic transgene expression was slightly observed in the lung and kidney, but not in the spleen or ovary. CONCLUSIONS These data suggest for the first time that the use of the HVJ-liposome vector is a safe and feasible modality for liver-directed gene transfer in pigs, and it might therefore be suitable for clinical gene therapy trials.
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Affiliation(s)
- Yujo Kawashita
- Department of Transplantation and Digestive Surgery, Graduate School of Biomedical Science, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
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Hong IC, Mullen PM, Precht AF, Khanna A, Li M, Behling C, Lopez VF, Chiou HC, Moss RB, Hart ME. Non-viral human IL-10 gene expression reduces acute rejection in heterotopic auxiliary liver transplantation in rats. Microsurgery 2003; 23:432-6. [PMID: 14557996 DOI: 10.1002/micr.10174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We studied nonviral delivery, expression, and the effect of the human interleukin-10 (Hu IL-10) gene on the rat model of heterotopic auxiliary liver transplantation (HALT). Two previous pilot studies showed remarkable expression of the Hu IL-10 gene in donor and recipient rats, and a decreasing effect of acute rejection in certain cases. In this study, we focused on the efficacy of Hu IL-10 gene expression to decrease acute rejection compared with cyclosporine A (CyA) in a HALT model. Three study groups and one control group were designed. Each group consisted of 6 DA donor and 6 Lewis recipient rats, which underwent HALT. In the control group, donors and recipients were not treated at all. In group II, recipients were treated with one dose of CyA. In group III, donors were treated with Hu IL-10 plasmid. In group IV, donors were treated with Hu IL-10 plasmid, and recipients were treated with one dose of CyA. Rejection was established by histopathology: it revealed 100% rejection in control and 33.3% rejection in study groups II, III, and IV. Human IL-10 gene expression prevented acute rejection with the same efficacy as CyA in the HALT model in rats.
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Affiliation(s)
- In Chul Hong
- Department of Surgery, University of California at San Diego, 92103-8401, USA.
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Kao WWY. Particle-mediated gene transfer to ocular surface epithelium. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 506:1297-308. [PMID: 12614071 DOI: 10.1007/978-1-4615-0717-8_189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Winston W Y Kao
- Department of Ophthalmology, University of Cincinnati, Cincinnati, Ohio, USA
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Yang J, Reutzel-Selke A, Steier C, Jurisch A, Tullius SG, Sawitzki B, Kolls J, Volk HD, Ritter T. Targeting of macrophage activity by adenovirus-mediated intragraft overexpression of TNFRp55-Ig, IL-12p40, and vIL-10 ameliorates adenovirus-mediated chronic graft injury, whereas stimulation of macrophages by overexpression of IFN-gamma accelerates chronic graft injury in a rat renal allograft model. J Am Soc Nephrol 2003; 14:214-25. [PMID: 12506154 DOI: 10.1097/01.asn.0000037703.73850.72] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Adenovirus (Ad)-mediated gene transfer of immunoregulatory molecules prevents acute allograft rejection. It is here analyzed for the first time whether this approach may prevent the development of chronic renal allograft injury in rats. Renal allografts (F344-->Lewis rat) were ex vivo transduced in group I with control Ad-construct, group II with three different therapeutic Ad-constructs expressing the immunoregulatory molecules vIL-10, TNFRp55-Ig, and IL-12p40, and group III with AdIFN-gamma. Group IV served as untreated controls. Control grafts (IV) showed increasing proteinuria during the 24-wk follow-up. Chronic graft injury was accelerated by Ad-control (I) and even more by AdIFN-gamma (III). All rats carrying the AdIFN-gamma-transduced grafts died within 12 to 13 wk by advanced chronic renal failure associated with strong immune cell infiltration and immune gene expression. By contrast, the Ad-therapy group II showed less inflammation and improved graft histology and function if compared with the groups I and III. Moreover, significantly less infiltrating ED-1(+) macrophages and an improved histologic score even if compared with untreated controls (IV) was observed. However, after disappearance of therapeutic gene expression, group II showed increasing proteinuria probably as result of late T cell activation to the Ad-encoded proteins. Ex vivo transduction of allografts with Ad-control or even more AdIFN-gamma expression promotes intragraft inflammation and chronic graft injury. Targeting macrophage activation by a cocktail of therapeutic genes improved the results. These data support the pathogenetic role of cytokines in chronic graft injury; however, they also show the limitations of the Ad-mediated gene transfer.
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Affiliation(s)
- Jun Yang
- Institute of Medical Immunology, Charité-Campus Mitte, Humboldt University, Berlin, Germany
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10
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Kanaan SA, Kozower BD, Suda T, Daddi N, Tagawa T, Ritter JH, Mohanakumar T, Patterson GA. Intratracheal adenovirus-mediated gene transfer is optimal in experimental lung transplantation. J Thorac Cardiovasc Surg 2002; 124:1130-6. [PMID: 12447178 DOI: 10.1067/mtc.2002.123702] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Gene transfer to experimental lung grafts has been shown to reduce ischemia-reperfusion injury and acute rejection. The optimal delivery route should produce high lung expression with no inflammation and minimal systemic expression. The goal of this study was to determine the optimal gene transfer route for use in experimental lung transplantation. METHODS F344 rats were injected with 2.9 x 10(10) plaque-forming units of adenovirus vector encoding beta-galactosidase through intratracheal, intravenous, intraperitoneal, or intramuscular delivery routes and killed 48 hours later. Gene expression was measured by means of enzyme-linked immunosorbent assay. RESULTS Intratracheal delivery produces significantly greater gene expression in the lung (75,350 +/- 47,288 pg/100 microg of protein, P <.001 vs intravenous, intraperitoneal, and intramuscular routes) and minimal systemic expression (nonsignificant in serum, kidney, liver, spleen, and muscle vs that seen in control animals, P =.016 for heart). Immunohistochemistry staining showed beta-galactosidase expression in the bronchial epithelium of lungs transfected through the intratracheal route with mild inflammation. CONCLUSIONS Intratracheal gene transfer provides significant expression in the lung with mild to no inflammation and minimal systemic expression. This delivery strategy has tremendous potential in experimental lung transplant models to reduce ischemia-reperfusion injury and acute allograft rejection and should be investigated further.
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Affiliation(s)
- Samer A Kanaan
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, St Louis, MO 63110, USA
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Gojo S, Yamamoto S, Patience C, LeGuern C, Cooper DKC. Gene therapy--its potential in surgery. Ann R Coll Surg Engl 2002; 84:297-301. [PMID: 12398117 PMCID: PMC2504171 DOI: 10.1308/003588402760452367] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Advances in techniques have resulted in practical applications for gene therapy, which is becoming applicable for the treatment of human disease. This review outlines the advantages and disadvantages of the techniques available. Examples of research efforts in the treatment of diseases of relevance to the surgeon (cardiovascular diseases, cancer, wound healing, fracture repair, and in organ transplantation) are presented.
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Shastri PV, Martin I. Tissue engineering by cell transplantation. ERNST SCHERING RESEARCH FOUNDATION WORKSHOP 2002:29-45. [PMID: 11816272 DOI: 10.1007/978-3-662-04816-0_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- P V Shastri
- Department of Materials Science and Engineering and School of Medicine, University of Pennsylvania, Abramson Pediatric Research Center, Suite 707C, 34th St. & Civic Center Blvd., Philadelphia, PA 19104, USA
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Wheatley DJ. The potential of the heterotopic rat heart transplant model. Transplantation 2002; 73:1382-3. [PMID: 12023611 DOI: 10.1097/00007890-200205150-00002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- David J Wheatley
- Cardiac Surgery, British Heart Foundation, University of Glasgow, Scotland, UK
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Affiliation(s)
- J Torras
- Nephrology Service, Hospital of Bellvitge, Ciutat Sanitària i Universitària de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
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Mandefield H, Wellington F, Morgan V. Introduction of the certificate in transplant coordination in the United Kingdom. Prog Transplant 2001. [PMID: 11357551 DOI: 10.7182/prtr.11.1.474j31h141731w56] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Training for transplant coordinators is not mandatory in the United Kingdom, although the United Kingdom Transplant Coordinators Association has provided informal courses since 1988. The authors of this article were responsible for the development of an accredited training program for transplant coordinators in the United Kingdom. Accredited by the University of Central England, the course modules have been run and managed by the Association since 1996. The course consists of 3 modules: Introduction to Transplant Coordination; Interpersonal and Professional Skills for Transplant Coordinators, and Introduction to Research Methods for Transplant Coordinators. Between 1996 and 1999, 64 transplant coordinators (60% of transplant coordinators currently in post) in the United Kingdom have undertaken at least 1 module. The Association feels that the accredited training program means one step further on the road to professional recognition of transplant coordinators in the United Kingdom.
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Olbrisch M, Benedict S, Haller D, Levenson J. Psychosocial assessment of living organ donors: clinical and ethical considerations. Prog Transplant 2001. [DOI: 10.7182/prtr.11.1.e27186258226k604] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Mai J, Robbins PD. Targeting gene therapy for transplantation with venom. Transplantation 2000; 70:1553-4. [PMID: 11152214 DOI: 10.1097/00007890-200012150-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- J Mai
- Department of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, PA 15261, USA
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