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Längin M, Buttgereit I, Reichart B, Panelli A, Radan J, Mokelke M, Neumann E, Bender M, Michel S, Ellgass R, Ying J, Fresch AK, Mayr T, Steen S, Paskevicius A, Egerer S, Bähr A, Kessler B, Klymiuk N, Binder U, Skerra A, Ledderose S, Müller S, Walz C, Hagl C, Wolf E, Ayares D, Brenner P, Abicht JM. Xenografts Show Signs of Concentric Hypertrophy and Dynamic Left Ventricular Outflow Tract Obstruction After Orthotopic Pig-to-baboon Heart Transplantation. Transplantation 2023; 107:e328-e338. [PMID: 37643028 DOI: 10.1097/tp.0000000000004765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
BACKGROUND Orthotopic cardiac xenotransplantation has seen substantial advancement in the last years and the initiation of a clinical pilot study is close. However, donor organ overgrowth has been a major hurdle for preclinical experiments, resulting in loss of function and the decease of the recipient. A better understanding of the pathogenesis of organ overgrowth after xenotransplantation is necessary before clinical application. METHODS Hearts from genetically modified ( GGTA1-KO , hCD46/hTBM transgenic) juvenile pigs were orthotopically transplanted into male baboons. Group I (control, n = 3) received immunosuppression based on costimulation blockade, group II (growth inhibition, n = 9) was additionally treated with mechanistic target of rapamycin inhibitor, antihypertensive medication, and fast corticoid tapering. Thyroid hormones and insulin-like growth factor 1 were measured before transplantation and before euthanasia, left ventricular (LV) growth was assessed by echocardiography, and hemodynamic data were recorded via a wireless implant. RESULTS Insulin-like growth factor 1 was higher in baboons than in donor piglets but dropped to porcine levels at the end of the experiments in group I. LV mass increase was 10-fold faster in group I than in group II. This increase was caused by nonphysiological LV wall enlargement. Additionally, pressure gradients between LV and the ascending aorta developed, and signs of dynamic left ventricular outflow tract (LVOT) obstruction appeared. CONCLUSIONS After orthotopic xenotransplantation in baboon recipients, untreated porcine hearts showed rapidly progressing concentric hypertrophy with dynamic LVOT obstruction, mimicking hypertrophic obstructive cardiomyopathy in humans. Antihypertensive and antiproliferative drugs reduced growth rate and inhibited LVOT obstruction, thereby preventing loss of function.
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Affiliation(s)
- Matthias Längin
- Department of Anaesthesiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Ines Buttgereit
- Department of Anaesthesiology, LMU University Hospital, LMU Munich, Munich, Germany
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Bruno Reichart
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Alessandro Panelli
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Julia Radan
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Maren Mokelke
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Elisabeth Neumann
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Martin Bender
- Department of Anaesthesiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Sebastian Michel
- Department of Cardiac Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Reinhard Ellgass
- Department of Cardiac Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jiawei Ying
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Ann Kathrin Fresch
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Stig Steen
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Audrius Paskevicius
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Stefanie Egerer
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, and Department of Veterinary Sciences, LMU Munich, Munich, Germany
| | - Andrea Bähr
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, and Department of Veterinary Sciences, LMU Munich, Munich, Germany
| | - Barbara Kessler
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, and Department of Veterinary Sciences, LMU Munich, Munich, Germany
| | - Nikolai Klymiuk
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, and Department of Veterinary Sciences, LMU Munich, Munich, Germany
| | | | - Arne Skerra
- Lehrstuhl für Biologische Chemie, School of Life Sciences, Technical University of Munich, Munich, Germany
| | - Stephan Ledderose
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Susanna Müller
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Christoph Walz
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Christian Hagl
- Department of Cardiac Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, and Department of Veterinary Sciences, LMU Munich, Munich, Germany
- Center for Innovative Medical Models (CiMM), LMU Munich, Munich, Germany
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), LMU Munich, Munich, Germany
| | | | - Paolo Brenner
- Department of Cardiac Surgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology, LMU University Hospital, LMU Munich, Munich, Germany
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Brenner P, Reichart B, Längin M, Bender M, Mayr T, Güthoff S, Sebastian M, Buchholz S, Radan J, Mokelke M, Buttgereit I, Neumann E, Bauer A, Klymiuk N, Wolf E, Walz C, Reimann K, Ayares D, Hagl C, Steen S, Abicht JM. Perioperative Cardiac Xenograft Dysfunction (PCXD) as a Major Hurdle in the Preclinical (Life-Supporting) Orthotopic (oXTx) Cardiac Xenotransplantation if Compared to the Heterotopic Thoracic (htXTx) Model. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- P. Brenner
- Department of Cardiac Surgery, Clinic of Grosshadern, University of Munich (LMU), München, Deutschland
| | - B. Reichart
- Walter-Brendel-Zentrum, University of Munich (LMU), Munich, Deutschland
| | - M. Längin
- Department of Anaesthesiology, Clinic if Grosshadern, LMU, München, Deutschland
| | - M. Bender
- Department of Anaesthesiology, Clinic of Grosshadern, LMU, Munich, Deutschland
| | - T. Mayr
- Walter-Brendel-Zentrum, München, Deutschland
| | - S. Güthoff
- Walter-Brendel-Zentrum, München, Deutschland
| | - M. Sebastian
- Clinic for cardiac surgery, Ludwig-Maximilian University, Munich, Deutschland
| | - S. Buchholz
- Department of Cardiac Surgery, LMU Munich, Munich, Deutschland
| | - J. Radan
- Walter-Brendel-Zentrum, LMU, München, Deutschland
| | - M. Mokelke
- Walter-Brendel-Zentrum, LMU, München, Deutschland
| | | | - E. Neumann
- Walter-Brendel-Zentrum, LMU, München, Deutschland
| | - A. Bauer
- Department of Anaesthesiology, LMU, Munich, Deutschland
| | - N. Klymiuk
- Department of Molecular Animal Breeding, LMU, Munich, Deutschland
| | - E. Wolf
- Institute of Molecular Animal Breeding and Biotechnology, LMU, Munich, Deutschland
| | - C. Walz
- Department of Pathology, LMU, Munich, Deutschland
| | | | - D. Ayares
- Revivicor Inc., Blackburg, United States
| | - C. Hagl
- Department of Cardiac Surgery, Clinic of Grosshadern, University of Munich (LMU), Munich, Deutschland
| | - S. Steen
- Department of Cardiothoracic Surgery, University of Lund, Lund, Sweden
| | - J. M. Abicht
- Department of Anesthesiology, Clinic of Grosshadern, LMU, Munich, Deutschland
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Denner J, Längin M, Reichart B, Krüger L, Fiebig U, Mokelke M, Radan J, Mayr T, Milusev A, Luther F, Sorvillo N, Rieben R, Brenner P, Walz C, Wolf E, Roshani B, Stahl-Hennig C, Abicht JM. Impact of porcine cytomegalovirus on long-term orthotopic cardiac xenotransplant survival. Sci Rep 2020; 10:17531. [PMID: 33067513 PMCID: PMC7568528 DOI: 10.1038/s41598-020-73150-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/09/2020] [Indexed: 12/12/2022] Open
Abstract
Xenotransplantation using pig organs has achieved survival times up to 195 days in pig orthotopic heart transplantation into baboons. Here we demonstrate that in addition to an improved immunosuppressive regimen, non-ischaemic preservation with continuous perfusion and control of post-transplantation growth of the transplant, prevention of transmission of the porcine cytomegalovirus (PCMV) plays an important role in achieving long survival times. For the first time we demonstrate that PCMV transmission in orthotopic pig heart xenotransplantation was associated with a reduced survival time of the transplant and increased levels of IL-6 and TNFα were found in the transplanted baboon. Furthermore, high levels of tPA-PAI-1 complexes were found, suggesting a complete loss of the pro-fibrinolytic properties of the endothelial cells. These data show that PCMV has an important impact on transplant survival and call for elimination of PCMV from donor pigs.
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Affiliation(s)
| | - Matthias Längin
- Department of Anaesthesiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bruno Reichart
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | | | | | - Maren Mokelke
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Julia Radan
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Anastasia Milusev
- Department of Biomedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Fabian Luther
- Department of Biomedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Nicoletta Sorvillo
- Department of Biomedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Robert Rieben
- Department of Biomedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Paolo Brenner
- Department of Cardiac Surgery, University Hospital, Maximilians-Universität München, Munich, Germany
| | - Christoph Walz
- Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Eckhard Wolf
- Animal Breeding and Biotechnology, Gene Center and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Berit Roshani
- Unit of Infection Models, German Primate Center, Göttingen, Germany
| | | | - Jan-Michael Abicht
- Department of Anaesthesiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
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Längin M, Reichart B, Steen S, Sjöberg T, Paskevicius A, Liao Q, Qin G, Mokelke M, Mayr T, Radan J, Issl L, Buttgereit I, Ying J, Fresch AK, Panelli A, Egerer S, Bähr A, Kessler B, Milusev A, Sfriso R, Rieben R, Ayares D, Murray PJ, Ellgass R, Walz C, Klymiuk N, Wolf E, Abicht JM, Brenner P. Cold non-ischemic heart preservation with continuous perfusion prevents early graft failure in orthotopic pig-to-baboon xenotransplantation. Xenotransplantation 2020; 28:e12636. [PMID: 32841431 DOI: 10.1111/xen.12636] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/22/2020] [Accepted: 07/30/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND Successful preclinical transplantations of porcine hearts into baboon recipients are required before commencing clinical trials. Despite years of research, over half of the orthotopic cardiac xenografts were lost during the first 48 hours after transplantation, primarily caused by perioperative cardiac xenograft dysfunction (PCXD). To decrease the rate of PCXD, we adopted a preservation technique of cold non-ischemic perfusion for our ongoing pig-to-baboon cardiac xenotransplantation project. METHODS Fourteen orthotopic cardiac xenotransplantation experiments were carried out with genetically modified juvenile pigs (GGTA1- KO/hCD46/hTBM) as donors and captive-bred baboons as recipients. Organ preservation was compared according to the two techniques applied: cold static ischemic cardioplegia (IC; n = 5) and cold non-ischemic continuous perfusion (CP; n = 9) with an oxygenated albumin-containing hyperoncotic cardioplegic solution containing nutrients, erythrocytes and hormones. Prior to surgery, we measured serum levels of preformed anti-non-Gal-antibodies. During surgery, hemodynamic parameters were monitored with transpulmonary thermodilution. Central venous blood gas analyses were taken at regular intervals to estimate oxygen extraction, as well as lactate production. After surgery, we measured troponine T and serum parameters of the recipient's kidney, liver and coagulation functions. RESULTS In porcine grafts preserved with IC, we found significantly depressed systolic cardiac function after transplantation which did not recover despite increasing inotropic support. Postoperative oxygen extraction and lactate production were significantly increased. Troponin T, creatinine, aspartate aminotransferase levels were pathologically high, whereas prothrombin ratios were abnormally low. In three of five IC experiments, PCXD developed within 24 hours. By contrast, all nine hearts preserved with CP retained fully preserved systolic function, none showed any signs of PCXD. Oxygen extraction was within normal ranges; serum lactate as well as parameters of organ functions were only mildly elevated. Preformed anti-non-Gal-antibodies were similar in recipients receiving grafts from either IC or CP preservation. CONCLUSIONS While standard ischemic cardioplegia solutions have been used with great success in human allotransplantation over many years, our data indicate that they are insufficient for preservation of porcine hearts transplanted into baboons: Ischemic storage caused severe impairment of cardiac function and decreased tissue oxygen supply, leading to multi-organ failure in more than half of the xenotransplantation experiments. In contrast, cold non-ischemic heart preservation with continuous perfusion reliably prevented early graft failure. Consistent survival in the perioperative phase is a prerequisite for preclinical long-term results after cardiac xenotransplantation.
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Affiliation(s)
- Matthias Längin
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany
| | - Bruno Reichart
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Stig Steen
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Trygve Sjöberg
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Audrius Paskevicius
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Qiuming Liao
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Guangqi Qin
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Maren Mokelke
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany
| | - Julia Radan
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Lara Issl
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Ines Buttgereit
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Jiawei Ying
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Ann Kathrin Fresch
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Alessandro Panelli
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Stefanie Egerer
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Andrea Bähr
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Barbara Kessler
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Anastasia Milusev
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Riccardo Sfriso
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Robert Rieben
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | | | - Peter J Murray
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Reinhard Ellgass
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Christoph Walz
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Nikolai Klymiuk
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany
| | - Paolo Brenner
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
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Brenner P, Reichart B, Längin M, Mayr T, Buchholz S, Michel S, Wolf E, Hagl C, Steen S, Abicht JM. Completed Preclinical Life-Supporting Orthotopic Pig-to-baboon Cardiac Xenotransplantation Study (oXHTx): First Successful and Reproducible Long-Term Survival Up to Half a Year Fulfilling the ISHLT Prerequisite for Clinical Cardiac Xenotransplantation. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Längin M, Konrad M, Reichart B, Mayr T, Vandewiele S, Postrach J, Mokelke M, Radan J, Brenner P, Bauer A, Abicht J. Hemodynamic evaluation of anesthetized baboons and piglets by transpulmonary thermodilution: Normal values and interspecies differences with respect to xenotransplantation. Xenotransplantation 2019; 27:e12576. [DOI: 10.1111/xen.12576] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/04/2019] [Accepted: 11/29/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Matthias Längin
- Department of Anaesthesiology University Hospital LMU Munich Munich Germany
| | | | - Bruno Reichart
- Transregional Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine LMU Munich Munich Germany
| | - Tanja Mayr
- Department of Anaesthesiology University Hospital LMU Munich Munich Germany
| | - Stephanie Vandewiele
- Transregional Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine LMU Munich Munich Germany
- Dr. von Haunersches Kinderspital Kinderklinik und Kinderpoliklinik der LMU München Munich Germany
| | - Johannes Postrach
- Transregional Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine LMU Munich Munich Germany
- Privatklinik Dr. Robert Schindlbeck GmbH &Co KG Department of Medicine Herrsching am Ammersee Germany
| | - Maren Mokelke
- Transregional Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine LMU Munich Munich Germany
| | - Julia Radan
- Transregional Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine LMU Munich Munich Germany
| | - Paolo Brenner
- Department of Cardiac Surgery University Hospital LMU Munich Munich Germany
| | - Andreas Bauer
- Department of Anaesthesiology and Intensive Care RoMed Klinikum Rosenheim Rosenheim Germany
| | - Jan‐Michael Abicht
- Department of Anaesthesiology University Hospital LMU Munich Munich Germany
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Längin M, Mayr T, Reichart B, Michel S, Buchholz S, Guethoff S, Dashkevich A, Baehr A, Egerer S, Bauer A, Mihalj M, Panelli A, Issl L, Ying J, Fresch AK, Buttgereit I, Mokelke M, Radan J, Werner F, Lutzmann I, Steen S, Sjöberg T, Paskevicius A, Qiuming L, Sfriso R, Rieben R, Dahlhoff M, Kessler B, Kemter E, Kurome M, Zakhartchenko V, Klett K, Hinkel R, Kupatt C, Falkenau A, Reu S, Ellgass R, Herzog R, Binder U, Wich G, Skerra A, Ayares D, Kind A, Schönmann U, Kaup FJ, Hagl C, Wolf E, Klymiuk N, Brenner P, Abicht JM. Author Correction: Consistent success in life-supporting porcine cardiac xenotransplantation. Nature 2019; 568:E7. [DOI: 10.1038/s41586-019-1108-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Brenner P, Längin M, Mayr T, Güthoff S, Buchholz S, Michel S, Dashkevich A, Lutzmann I, Werner F, Klymiuk N, Wolf E, Reimann K, Hermanns W, Ayares D, Hagl C, Steen S, Abicht JM, Reichart B. Breakthrough in Orthotopic Cardiac Xenotransplantation: In a Preclinical Life-Supporting Pig-To-Baboon Model Worldwide First Continuous Successful Long-Term Survival (Up To 172/187 Days, Both Ongoing). Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- P. Brenner
- LMU München, Klinikum Grosshadern, Herzchirurgische Klinik, München, Germany
| | - M. Längin
- LMU Munich, Anaesthesiology, München, Germany
| | - T. Mayr
- LMU Munich, Walter-Brendel-Centre, München, Germany
| | - S. Güthoff
- LMU Munich, Walter-Brendel-Centre, München, Germany
| | - S. Buchholz
- LMU München, Klinikum Grosshadern, Herzchirurgische Klinik, München, Germany
| | - S. Michel
- LMU München, Klinikum Grosshadern, Herzchirurgische Klinik, München, Germany
| | - A. Dashkevich
- LMU München, Klinikum Grosshadern, Herzchirurgische Klinik, München, Germany
| | - I. Lutzmann
- LMU München, Walter-Brendel-Centre, München, Germany
| | - F. Werner
- LMU München, Walter-Brendel-Centre, München, Germany
| | - N. Klymiuk
- LMU München, Molecular Animal Breeding and Biotechnology, München, Germany
| | - E. Wolf
- LMU München, Molecular Animal Breeding and Biotechnology, München, Germany
| | - K. Reimann
- University of Massachusetts, Mass Biologics, Boston, United States
| | - W. Hermanns
- LMU München, Veterinary Pathology, München, Germany
| | - D. Ayares
- Revivicor Inc., Blackburn, United States
| | - C. Hagl
- LMU München, Klinikum Grosshadern, Herzchirurgische Klinik, München, Germany
| | - S. Steen
- University of Lund, Cardiothoracic Surgery, Lund, Sweden
| | | | - B. Reichart
- LMU Munich, Walter-Brendel-Centre, München, Germany
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9
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Längin M, Mayr T, Reichart B, Michel S, Buchholz S, Guethoff S, Dashkevich A, Baehr A, Egerer S, Bauer A, Mihalj M, Panelli A, Issl L, Ying J, Fresch AK, Buttgereit I, Mokelke M, Radan J, Werner F, Lutzmann I, Steen S, Sjöberg T, Paskevicius A, Qiuming L, Sfriso R, Rieben R, Dahlhoff M, Kessler B, Kemter E, Kurome M, Zakhartchenko V, Klett K, Hinkel R, Kupatt C, Falkenau A, Reu S, Ellgass R, Herzog R, Binder U, Wich G, Skerra A, Ayares D, Kind A, Schönmann U, Kaup FJ, Hagl C, Wolf E, Klymiuk N, Brenner P, Abicht JM. Consistent success in life-supporting porcine cardiac xenotransplantation. Nature 2018; 564:430-433. [PMID: 30518863 DOI: 10.1038/s41586-018-0765-z] [Citation(s) in RCA: 286] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 11/02/2018] [Indexed: 01/01/2023]
Abstract
Heart transplantation is the only cure for patients with terminal cardiac failure, but the supply of allogeneic donor organs falls far short of the clinical need1-3. Xenotransplantation of genetically modified pig hearts has been discussed as a potential alternative4. Genetically multi-modified pig hearts that lack galactose-α1,3-galactose epitopes (α1,3-galactosyltransferase knockout) and express a human membrane cofactor protein (CD46) and human thrombomodulin have survived for up to 945 days after heterotopic abdominal transplantation in baboons5. This model demonstrated long-term acceptance of discordant xenografts with safe immunosuppression but did not predict their life-supporting function. Despite 25 years of extensive research, the maximum survival of a baboon after heart replacement with a porcine xenograft was only 57 days and this was achieved, to our knowledge, only once6. Here we show that α1,3-galactosyltransferase-knockout pig hearts that express human CD46 and thrombomodulin require non-ischaemic preservation with continuous perfusion and control of post-transplantation growth to ensure long-term orthotopic function of the xenograft in baboons, the most stringent preclinical xenotransplantation model. Consistent life-supporting function of xenografted hearts for up to 195 days is a milestone on the way to clinical cardiac xenotransplantation7.
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Affiliation(s)
- Matthias Längin
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany.,Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany.,Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Bruno Reichart
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany.
| | - Sebastian Michel
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Stefan Buchholz
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Sonja Guethoff
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany.,Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Alexey Dashkevich
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Andrea Baehr
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Stefanie Egerer
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Andreas Bauer
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany
| | - Maks Mihalj
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Alessandro Panelli
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Lara Issl
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Jiawei Ying
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Ann Kathrin Fresch
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Ines Buttgereit
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Maren Mokelke
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Julia Radan
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Fabian Werner
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany
| | - Isabelle Lutzmann
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
| | - Stig Steen
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Trygve Sjöberg
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Audrius Paskevicius
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Liao Qiuming
- Department of Cardiothoracic Surgery, Lund University and Skåne University Hospital, Lund, Sweden
| | - Riccardo Sfriso
- Department for BioMedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Robert Rieben
- Department for BioMedical Research (DMBR), University of Bern, Bern, Switzerland
| | - Maik Dahlhoff
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Barbara Kessler
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Elisabeth Kemter
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Mayuko Kurome
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Valeri Zakhartchenko
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Katharina Klett
- I. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,Institute for Cardiovascular Prevention (IPEK), LMU Munich, Munich, Germany.,DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Rabea Hinkel
- I. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,Institute for Cardiovascular Prevention (IPEK), LMU Munich, Munich, Germany.,DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Christian Kupatt
- I. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,DZHK (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Almuth Falkenau
- Institute of Veterinary Pathology, LMU Munich, Munich, Germany
| | - Simone Reu
- Institute of Pathology, Medical Faculty, LMU Munich, Munich, Germany
| | - Reinhard Ellgass
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Rudolf Herzog
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | | | | | - Arne Skerra
- Munich Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für Biologische Chemie, School of Life Sciences Weihenstephan, Technical University of Munich, Munich, Germany
| | | | - Alexander Kind
- Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technical University of Munich, Munich, Germany
| | | | | | - Christian Hagl
- Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Nikolai Klymiuk
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Munich, Germany
| | - Paolo Brenner
- Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany.,Department of Cardiac Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology, University Hospital, LMU Munich, Munich, Germany.,Transregional Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, LMU Munich, Munich, Germany
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10
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Sfriso R, Abicht JM, Längin M, Mayr T, Reichart B, Rieben R. Prevention of complement-mediated rejection in pig-to-baboon cardiac xenotransplantation. Mol Immunol 2018. [DOI: 10.1016/j.molimm.2018.06.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Längin M, Panelli A, Reichart B, Kind A, Brenner P, Mayr T, Abicht JM. Perioperative Telemetric Monitoring in Pig-to-Baboon Heterotopic Thoracic Cardiac Xenotransplantation. Ann Transplant 2018; 23:491-499. [PMID: 30026460 PMCID: PMC6248073 DOI: 10.12659/aot.909522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Perioperative monitoring and hemodynamic management after heterotopic thoracic cardiac xenotransplantation is challenging due to 2 independently beating hearts. Telemetry allows continuous monitoring of hemodynamic parameters of both the donor and recipient hearts. We describe our experience and report on the validity of a telemetric system during and after surgery. Material/Methods Wireless telemetry transmitters were implanted in 3 baboons receiving porcine donor hearts. Left ventricular pressure and ECG were assessed from the donor heart, whereas aortic pressure and temperature were assessed from the recipient. Telemetric data were validated with invasive blood pressure measurements. Results Telemetric blood pressure was lower than invasive blood pressure. Intraoperatively, the probe in the graft’s left ventricle measured negative end-diastolic pressures. Telemetry allowed simple discrimination between donor’s and recipient’s heart rates. Body temperature was underestimated by telemetry. Telemetric monitoring facilitates recognition of graft arrhythmias and volume demand. Conclusions In heterotopic thoracic cardiac xenotransplantation, telemetric implants are useful tools to continuously monitor the animals’ hemodynamic parameters and to discriminate donor and recipient organs. Accuracy is sufficient for systemic pressure measurement, but perioperative use of left ventricular end-diastolic pressure as a surrogate parameter for graft function is not advisable. Temperature measurements by telemetry do not reflect body core temperature.
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Affiliation(s)
- Matthias Längin
- Department of Anaesthesiology, University Hospital, Ludwig Maximilian University (LMU), Munich, Germany.,Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany
| | - Alessandro Panelli
- Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany.,Department of Cardiac Surgery, University Hospital, Ludwig Maximilian University (LMU), Munich, Germany
| | - Bruno Reichart
- Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany
| | - Alexander Kind
- Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technical University of Munich, Munich, Germany
| | - Paolo Brenner
- Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany.,Department of Cardiac Surgery, University Hospital, Ludwig Maximilian University (LMU), Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, University Hospital, Ludwig Maximilian University (LMU), Munich, Germany.,Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology, University Hospital, Ludwig Maximilian University (LMU), Munich, Germany.,Transregio Collaborative Research Center 127, Walter Brendel Centre of Experimental Medicine, Ludwig Maximilian University (LMU), Munich, Germany
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12
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Abicht JM, Sfriso R, Reichart B, Längin M, Gahle K, Puga Yung GL, Seebach JD, Rieben R, Ayares D, Wolf E, Klymiuk N, Baehr A, Kind A, Mayr T, Bauer A. Multiple genetically modified GTKO/hCD46/HLA-E/hβ2−mg porcine hearts are protected from complement activation and natural killer cell infiltration during ex vivo perfusion with human blood. Xenotransplantation 2018. [DOI: 10.1111/xen.12390] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jan-Michael Abicht
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Riccardo Sfriso
- Department of Clinical Research; University of Bern; Bern Switzerland
| | - Bruno Reichart
- Transregio Collaborative Research Center 127; Walter Brendel Centre of Experimental Medicine; Ludwig Maximilian University; Munich Germany
| | - Matthias Längin
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Katja Gahle
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Gisella L. Puga Yung
- Division of Immunology and Allergology; University Hospital and Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - Jörg D. Seebach
- Division of Immunology and Allergology; University Hospital and Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - Robert Rieben
- Department of Clinical Research; University of Bern; Bern Switzerland
| | | | - Eckhard Wolf
- Department of Molecular Animal Breeding and Biotechnology; Ludwig Maximilian University; Munich Germany
| | - Nikolai Klymiuk
- Department of Molecular Animal Breeding and Biotechnology; Ludwig Maximilian University; Munich Germany
| | - Andrea Baehr
- Department of Molecular Animal Breeding and Biotechnology; Ludwig Maximilian University; Munich Germany
| | - Alexander Kind
- Chair of Livestock Biotechnology; School of Life Sciences Weihenstephan; Technical University of Munich; Munich Germany
| | - Tanja Mayr
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Andreas Bauer
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
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13
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Hirsch B, Endris V, Lassmann S, Weichert W, Pfarr N, Schirmacher P, Kovaleva V, Werner M, Bonzheim I, Fend F, Sperveslage J, Kaulich K, Zacher A, Reifenberger G, Köhrer K, Stepanow S, Lerke S, Mayr T, Aust DE, Baretton G, Weidner S, Jung A, Kirchner T, Hansmann ML, Burbat L, von der Wall E, Dietel M, Hummel M. Multicenter validation of cancer gene panel-based next-generation sequencing for translational research and molecular diagnostics. Virchows Arch 2018; 472:557-565. [PMID: 29374318 PMCID: PMC5924673 DOI: 10.1007/s00428-017-2288-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 12/05/2017] [Accepted: 12/19/2017] [Indexed: 12/12/2022]
Abstract
The simultaneous detection of multiple somatic mutations in the context of molecular diagnostics of cancer is frequently performed by means of amplicon-based targeted next-generation sequencing (NGS). However, only few studies are available comparing multicenter testing of different NGS platforms and gene panels. Therefore, seven partner sites of the German Cancer Consortium (DKTK) performed a multicenter interlaboratory trial for targeted NGS using the same formalin-fixed, paraffin-embedded (FFPE) specimen of molecularly pre-characterized tumors (n = 15; each n = 5 cases of Breast, Lung, and Colon carcinoma) and a colorectal cancer cell line DNA dilution series. Detailed information regarding pre-characterized mutations was not disclosed to the partners. Commercially available and custom-designed cancer gene panels were used for library preparation and subsequent sequencing on several devices of two NGS different platforms. For every case, centrally extracted DNA and FFPE tissue sections for local processing were delivered to each partner site to be sequenced with the commercial gene panel and local bioinformatics. For cancer-specific panel-based sequencing, only centrally extracted DNA was analyzed at seven sequencing sites. Subsequently, local data were compiled and bioinformatics was performed centrally. We were able to demonstrate that all pre-characterized mutations were re-identified correctly, irrespective of NGS platform or gene panel used. However, locally processed FFPE tissue sections disclosed that the DNA extraction method can affect the detection of mutations with a trend in favor of magnetic bead-based DNA extraction methods. In conclusion, targeted NGS is a very robust method for simultaneous detection of various mutations in FFPE tissue specimens if certain pre-analytical conditions are carefully considered.
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Affiliation(s)
- B Hirsch
- Campus Mitte, Institute of Pathology, Charité-University Medicine Berlin, Virchowweg 15, 10117, Berlin, Germany. .,German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.
| | - V Endris
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Medicine Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - S Lassmann
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute for Surgical Pathology, Medical Center, Faculty of Medicine, University of Freiburg, Breisacherstraße 115A, 79106, Freiburg, Germany
| | - W Weichert
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, Technical University Munich (TUM), Munich, Germany
| | - N Pfarr
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, Technical University Munich (TUM), Munich, Germany
| | - P Schirmacher
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Medicine Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - V Kovaleva
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute for Surgical Pathology, Medical Center, Faculty of Medicine, University of Freiburg, Breisacherstraße 115A, 79106, Freiburg, Germany
| | - M Werner
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute for Surgical Pathology, Medical Center, Faculty of Medicine, University of Freiburg, Breisacherstraße 115A, 79106, Freiburg, Germany
| | - I Bonzheim
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology and Neuropathology, University Hospital Tuebingen, Eberhard-Karls-University, Liebermeisterstraße 8, 72076, Tuebingen, Germany
| | - F Fend
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology and Neuropathology, University Hospital Tuebingen, Eberhard-Karls-University, Liebermeisterstraße 8, 72076, Tuebingen, Germany
| | - J Sperveslage
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology and Neuropathology, University Hospital Tuebingen, Eberhard-Karls-University, Liebermeisterstraße 8, 72076, Tuebingen, Germany
| | - K Kaulich
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Department of Neuropathology, Heinrich Heine University Duesseldorf and Biological and Medical Research Center (BMFZ), Genomics and Transcriptomics Laboratory, Heinrich Heine University Duesseldorf, 40225, Duesseldorf, Germany
| | - A Zacher
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Department of Neuropathology, Heinrich Heine University Duesseldorf and Biological and Medical Research Center (BMFZ), Genomics and Transcriptomics Laboratory, Heinrich Heine University Duesseldorf, 40225, Duesseldorf, Germany
| | - G Reifenberger
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Department of Neuropathology, Heinrich Heine University Duesseldorf and Biological and Medical Research Center (BMFZ), Genomics and Transcriptomics Laboratory, Heinrich Heine University Duesseldorf, 40225, Duesseldorf, Germany
| | - K Köhrer
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Department of Neuropathology, Heinrich Heine University Duesseldorf and Biological and Medical Research Center (BMFZ), Genomics and Transcriptomics Laboratory, Heinrich Heine University Duesseldorf, 40225, Duesseldorf, Germany
| | - S Stepanow
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Department of Neuropathology, Heinrich Heine University Duesseldorf and Biological and Medical Research Center (BMFZ), Genomics and Transcriptomics Laboratory, Heinrich Heine University Duesseldorf, 40225, Duesseldorf, Germany
| | - S Lerke
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Hospital Carl Gustav Carus, Fetscherstraße 74, 01307, Dresden, Germany
| | - T Mayr
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Hospital Carl Gustav Carus, Fetscherstraße 74, 01307, Dresden, Germany
| | - D E Aust
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Hospital Carl Gustav Carus, Fetscherstraße 74, 01307, Dresden, Germany
| | - G Baretton
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, University Hospital Carl Gustav Carus, Fetscherstraße 74, 01307, Dresden, Germany
| | - S Weidner
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, Ludwig-Maximilians University Munich, Thalkirchner Straße 36, 80337, Munich, Germany
| | - A Jung
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, Ludwig-Maximilians University Munich, Thalkirchner Straße 36, 80337, Munich, Germany
| | - T Kirchner
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Institute of Pathology, Ludwig-Maximilians University Munich, Thalkirchner Straße 36, 80337, Munich, Germany
| | - M L Hansmann
- German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany.,Dr. Senckenberg Institute of Pathology, University Hospital, Goethe-University, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - L Burbat
- Campus Mitte, Institute of Pathology, Charité-University Medicine Berlin, Virchowweg 15, 10117, Berlin, Germany.,German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - E von der Wall
- Campus Mitte, Institute of Pathology, Charité-University Medicine Berlin, Virchowweg 15, 10117, Berlin, Germany.,German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - M Dietel
- Campus Mitte, Institute of Pathology, Charité-University Medicine Berlin, Virchowweg 15, 10117, Berlin, Germany.,German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - M Hummel
- Campus Mitte, Institute of Pathology, Charité-University Medicine Berlin, Virchowweg 15, 10117, Berlin, Germany.,German Cancer Consortium (DKTK) Partner Site, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
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14
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Brenner P, Reichart B, Mayr T, Längin M, Guethoff S, Buchholz S, Dashkevich A, Michel S, Lutzmann I, Werner F, Bauer A, Klymiuk N, Wolf E, Reimann K, Hermanns W, Ayares D, Hagl C, Steen S, Abicht JM. Worldwide First Successful Long-term Survival after Orthotopic Cardiac Xenotransplantation of Multitransgenic Pig Hearts into Baboons Using a CD40mAb or CD40L Costimulation Blockade. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- P. Brenner
- Department of Cardiac Surgery, LMU München, Munich, Germany
| | - B. Reichart
- Walter-Brendel-Centre, LMU Munich, Munich, Germany
| | - T. Mayr
- Walter-Brendel-Centre, LMU Munich, Munich, Germany
| | - M. Längin
- Department of Anesthesiology, LMU München, Munich, Germany
| | - S. Guethoff
- Walter-Brendel-Centre, LMU Munich, Munich, Germany
| | - S. Buchholz
- Department of Cardiac Surgery, LMU München, Munich, Germany
| | - A. Dashkevich
- Department of Cardiac Surgery, LMU München, Munich, Germany
| | - S. Michel
- Department of Cardiac Surgery, LMU München, Munich, Germany
| | - I. Lutzmann
- Walter-Brendel-Centre, LMU Munich, Munich, Germany
| | - F. Werner
- Walter-Brendel-Centre, LMU Munich, Munich, Germany
| | - A. Bauer
- Department of Anesthesiology, LMU München, Munich, Germany
| | - N. Klymiuk
- Department of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany
| | - E. Wolf
- Department of Molecular Animal Breeding and Biotechnology, LMU Munich, Munich, Germany
| | | | - W. Hermanns
- Department of Veterinary Pathology, LMU, Munich, Germany
| | | | - C. Hagl
- Department of Cardiac Surgery, LMU München, Munich, Germany
| | - S. Steen
- Department of Cardiothoracic Surgery, University of Lund, Lund, Sweden
| | - J.-M. Abicht
- Department of Anesthesiology, LMU München, Munich, Germany
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15
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Li M, Eckl J, Abicht JM, Mayr T, Reichart B, Schendel DJ, Pohla H. Induction of porcine-specific regulatory T cells with high specificity and expression of IL-10 and TGF-β1 using baboon-derived tolerogenic dendritic cells. Xenotransplantation 2017; 25. [DOI: 10.1111/xen.12355] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/18/2017] [Accepted: 09/01/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Mingqian Li
- Laboratory of Tumor Immunology; LIFE Center; Ludwig-Maximilians-Universität; Munich Germany
- Department of Urology; University Hospital; Ludwig-Maximilians-Universität; Munich Germany
| | - Judith Eckl
- Institute of Molecular Immunology; Helmholtz Zentrum München; German Research Center for Environmental Health; Munich Germany
- Medigene Immunotherapies GmbH; Planegg-Martinsried Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology; Ludwig-Maximilians-Universität; Munich Germany
- Walter Brendel Centre of Experimental Medicine; Ludwig-Maximilians-Universität; Munich Germany
| | - Tanja Mayr
- Department of Anaesthesiology; Ludwig-Maximilians-Universität; Munich Germany
- Walter Brendel Centre of Experimental Medicine; Ludwig-Maximilians-Universität; Munich Germany
| | - Bruno Reichart
- Walter Brendel Centre of Experimental Medicine; Ludwig-Maximilians-Universität; Munich Germany
| | - Dolores J. Schendel
- Institute of Molecular Immunology; Helmholtz Zentrum München; German Research Center for Environmental Health; Munich Germany
- Medigene Immunotherapies GmbH; Planegg-Martinsried Germany
| | - Heike Pohla
- Laboratory of Tumor Immunology; LIFE Center; Ludwig-Maximilians-Universität; Munich Germany
- Department of Urology; University Hospital; Ludwig-Maximilians-Universität; Munich Germany
- Institute of Molecular Immunology; Helmholtz Zentrum München; German Research Center for Environmental Health; Munich Germany
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16
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Rieben R, Sfriso R, Abicht JM, Mayr T, Bähr A, Klymiuk N, Wolf E, Reichart B. Assessment of complement and NK cell activation in GalTKO/hCD46/HLA-E porcine hearts ex vivo xenoperfused with human blood. Mol Immunol 2017. [DOI: 10.1016/j.molimm.2017.06.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Mayr T, Bauer A, Reichart B, Guethoff S, Schoenmann U, Längin M, Panelli A, Kind A, Brenner P, Abicht JM. Hemodynamic and perioperative management in two different preclinical pig-to-baboon cardiac xenotransplantation models. Xenotransplantation 2017; 24. [DOI: 10.1111/xen.12295] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 11/29/2016] [Accepted: 01/26/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Tanja Mayr
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Andreas Bauer
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Bruno Reichart
- Walter Brendel Centre of Experimental Medicine; Ludwig Maximilian University; Munich Germany
| | - Sonja Guethoff
- Walter Brendel Centre of Experimental Medicine; Ludwig Maximilian University; Munich Germany
| | | | - Matthias Längin
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
| | - Alessandro Panelli
- Walter Brendel Centre of Experimental Medicine; Ludwig Maximilian University; Munich Germany
| | - Alexander Kind
- Chair of Livestock Biotechnology; School of Life Sciences Weihenstephan; Technical University of Munich; Munich Germany
| | - Paolo Brenner
- Department of Cardiac Surgery; Ludwig Maximilian University; Munich Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology; Ludwig Maximilian University; Munich Germany
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18
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Brenner P, Mayr T, Reichart B, Guethoff S, Buchholz S, Dashkevich A, Michel S, Lutzmann I, Werner F, Bauer A, Klymiuk N, Wolf E, Reimann K, Mohiuddin M, Hermanns W, Ayares D, McGregor C, Steen S, Abicht J. New Standards in Orthotopic Cardiac Xenotransplantation of Multitransgenic Pig Hearts Preserved with “Steens” Cold Blood Cardioplegia Perfusion in a Pig-to-Baboon Model with CD40mAb or CD40L Costimulation Blockade. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- P. Brenner
- Ludwig-Maximilians-University (LMU), Department of Cardiac Surgery, Munich, Germany
| | - T. Mayr
- Walter-Brendel-Centre, LMU, Munich, Germany
| | | | | | - S. Buchholz
- Ludwig-Maximilians-University (LMU), Department of Cardiac Surgery, Munich, Germany
| | - A. Dashkevich
- Ludwig-Maximilians-University (LMU), Department of Cardiac Surgery, Munich, Germany
| | - S. Michel
- Ludwig-Maximilians-University (LMU), Department of Cardiac Surgery, Munich, Germany
| | | | - F. Werner
- Walter-Brendel-Centre, LMU, Munich, Germany
| | - A. Bauer
- Ludwig-Maximilians-University (LMU), Department of Anaesthesiology, Munich, Germany
| | - N. Klymiuk
- Ludwig-Maximilians-University (LMU), Department of Molecular Animal Breeding and Biotechnology, Munich, Germany
| | - E. Wolf
- Ludwig-Maximilians-University (LMU), Department of Molecular Animal Breeding and Biotechnology, Munich, Germany
| | - K. Reimann
- University of Massachusetts Medical School, MassBiologics, Boston, United States
| | - M. Mohiuddin
- NHLBI, NIH, Cardiothoracic Surgery Research Laboratory, Bethesda, United States
| | - W. Hermanns
- Ludwig-Maximilians-University (LMU), Department of Veterinary Pathology, Munich, Germany
| | - D. Ayares
- Revivicor Inc, Blackburg, United States
| | - C. McGregor
- University College, Department of Cardiothoracic Surgery, London, United Kingdom
| | - S. Steen
- University of Lund, Department of Cardiothoracic Surgery, Lund, Sweden
| | - J.M. Abicht
- Ludwig-Maximilians-University (LMU), Department of Anaesthesiology, Munich, Germany
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Abicht JM, Kourtzelis I, Reichart B, Koutsogiannaki S, Primikyri A, Lambris JD, Chavakis T, Holdt L, Kind A, Guethoff S, Mayr T. Complement C3 inhibitor Cp40 attenuates xenoreactions in pig hearts perfused with human blood. Xenotransplantation 2017; 24:10.1111/xen.12262. [PMID: 27677785 PMCID: PMC5358808 DOI: 10.1111/xen.12262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 07/11/2016] [Accepted: 08/12/2016] [Indexed: 01/26/2023]
Abstract
BACKGROUND The complement system plays a crucial role in acute xenogeneic reactions after cardiac transplantation. We used an ex vivo perfusion model to investigate the effect of Cp40, a compstatin analog and potent inhibitor of complement at the level of C3. METHODS Fifteen wild-type pig hearts were explanted, cardiopleged, and reperfused ex vivo after 150 minutes of cold ischemia. Hearts were challenged in a biventricular working heart mode to evaluate cardiac perfusion and function. In the treatment group (n=5), the complement cascade was blocked at the level of C3 using Cp40, using diluted human blood. Untreated human and porcine blood was used for controls. RESULTS Throughout the perfusion, C3 activation was inhibited when Cp40 was used (mean of all time points: 1.11 ± 0.34% vs 3.12 ± 0.48% control activation; P<.01). Compared to xenoperfused controls, the cardiac index improved significantly in the treated group (6.5 ± 4.2 vs 3.5 ± 4.8 mL/min/g; P=.03, 180 minutes perfusion), while the concentration of lactate dehydrogenase as a maker for cell degradation was reduced in the perfusate (583 ± 187 U/mL vs 2108 ± 1145 U/mL, P=.02). Histological examination revealed less hemorrhage and edema, and immunohistochemistry confirmed less complement fragment deposition than in untreated xenoperfused controls. CONCLUSIONS Cp40 efficiently prevents C3 activation of the complement system, resulting in reduced cell damage and preserved function in wild-type porcine hearts xenoperfused ex vivo. We suggest that this compstatin analog, which blocks all main pathways of complement activation, could be a beneficial perioperative treatment in preclinical and in future clinical xenotransplantation.
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Affiliation(s)
- Jan-Michael Abicht
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
| | - Ioannis Kourtzelis
- Department of Clinical Pathobiochemistry, Medical Faculty, Technische Universität Dresden, Germany
| | - Bruno Reichart
- Walter-Brendel-Centre, Ludwig Maximilian University Munich, Germany
| | - Sophia Koutsogiannaki
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Alexandra Primikyri
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - John D. Lambris
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Triantafyllos Chavakis
- Department of Clinical Pathobiochemistry, Medical Faculty, Technische Universität Dresden, Germany
| | - Lesca Holdt
- Institute of Laboratory Medicine of Ludwig Maximilian University, Munich, Germany
| | - Alexander Kind
- Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technical University of Munich, Germany
| | - Sonja Guethoff
- Department of Cardiovascular Surgery, Ludwig Maximilian University, Munich, Germany
| | - Tanja Mayr
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
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20
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Kleinert E, Langenmayer MC, Reichart B, Kindermann J, Griemert B, Blutke A, Troidl K, Mayr T, Grantzow T, Noyan F, Abicht JM, Fischer S, Preissner KT, Wanke R, Deindl E, Guethoff S. Ribonuclease (RNase) Prolongs Survival of Grafts in Experimental Heart Transplantation. J Am Heart Assoc 2016; 5:e003429. [PMID: 27121849 PMCID: PMC4889206 DOI: 10.1161/jaha.116.003429] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 03/03/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cell damage, tissue and vascular injury are associated with the exposure and release of intracellular components such as RNA, which promote inflammatory reactions and thrombosis. Based on the counteracting anti-inflammatory and cardioprotective functions of ribonuclease A (RNase A) in this context, its role in an experimental model of heart transplantation in rats was studied. METHODS AND RESULTS Inbred BN/OrlRj rat cardiac allografts were heterotopically transplanted into inbred LEW/OrlRj rats. Recipients were intravenously treated every other day with saline or bovine pancreatic RNase A (50 μg/kg). Toxic side effects were not found (macroscopically and histologically). Heart tissue flow cytometry and quantitative morphological analyses of explanted hearts at postoperative day 1 or postoperative day 4 showed reduced leukocyte infiltration, edema, and thrombus formation in RNase A-treated rats. In allogeneic mixed lymphocyte reactions, RNase A decreased the proliferation of effector T cells. RNase A treatment of rats resulted in prolonged median graft survival up to 10.5 days (interquartile range 1.8) compared to 6.5 days (interquartile range 1.0) in saline treatment (P=0.001). Treatment of rats with a new generated (recombinant) human pancreatic RNase 1 prolonged median graft survival similarly, unlike treatment with (recombinant) inactive human RNase 1 (each 50 μg/kg IV every other day, 11.0 days, interquartile range 0.3, versus 8.0 days, interquartile range 0.5, P=0.007). CONCLUSIONS Upon heart transplantation, RNase administration appears to present a promising and safe drug to counteract ischemia/reperfusion injury and graft rejection. Furthermore, RNase treatment may be considered in situations of critical reperfusion after percutaneous coronary interventions or in cardiac surgery using the heart-lung machine.
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Affiliation(s)
- Eike Kleinert
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Martin C Langenmayer
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Germany Institute for Infectious Diseases and Zoonoses, Ludwig-Maximilians-Universität München, Germany
| | - Bruno Reichart
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Jana Kindermann
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany Department of Cardiac Surgery, Ludwig-Maximilians-Universität München, Germany
| | - Barbara Griemert
- Institute of Biochemistry, Medical School, Justus-Liebig-Universität, Giessen, Germany
| | - Andreas Blutke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Kerstin Troidl
- Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany Department of Vascular and Endovascular Surgery, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Tanja Mayr
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany Department of Anaesthesiology, Ludwig-Maximilians-Universität München, Germany
| | - Tobias Grantzow
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Fatih Noyan
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Jan-Michael Abicht
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany Department of Anaesthesiology, Ludwig-Maximilians-Universität München, Germany
| | - Silvia Fischer
- Institute of Biochemistry, Medical School, Justus-Liebig-Universität, Giessen, Germany
| | - Klaus T Preissner
- Institute of Biochemistry, Medical School, Justus-Liebig-Universität, Giessen, Germany
| | - Ruediger Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Elisabeth Deindl
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany
| | - Sonja Guethoff
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität München, Germany Department of Cardiac Surgery, Ludwig-Maximilians-Universität München, Germany
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Mayr T, Jauch J, Guethoff S, Buchholz S, Reichart B, Bauer A, Abicht JM. Large-Animal Biventricular Working Heart Perfusion System with Low Priming Volume—Comparison between in vivo and ex vivo Cardiac Function. Thorac Cardiovasc Surg 2016; 66:71-82. [DOI: 10.1055/s-0036-1580604] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background Existing large-animal, ex vivo, cardiac perfusion models are restricted in their ability to establish an ischemia/reperfusion condition as seen in cardiac surgery or transplantation. Other working heart systems only challenge one ventricle or require a substantially larger priming volume. We describe a novel biventricular cardiac perfusion system with reduced priming volume.
Methods Juvenile pig hearts were cardiopleged, explanted, and reperfused ex vivo after 150 minutes of cold ischemia. Autologous whole blood was used as perfusate (minimal priming volume 350 mL). After 15 minutes of Langendorff perfusion (LM), the system was switched into a biventricular working mode (WM) and studied for 3 hours.
Results During reperfusion, complete unloading of both ventricles and constant-pressure coronary perfusion was achieved. During working mode perfusion, the preload and afterload pressure of both ventricles was controlled within the targeted physiologic range. Functional parameters such as left ventricular work index were reduced in ex vivo working mode (in vivo: 787 ± 186 vs. 1 h WM 498 ± 66 mm Hg·mL/g·min; p < 0.01), but remained stable throughout the following study period (3 h WM 517 ± 103 mm Hg·mL/g·min; p = 0.63). Along with the elevated workload during WM, myocardial metabolism and oxygen consumption increased compared with LM (0.021 ± 0.08 vs. 0.06 ± 0.01 mL/min/g; 1 h after reperfusion). Histologic examination of the myocardium revealed no structural damage.
Conclusion In the ex vivo perfusion system, stable hemodynamic and metabolic conditions can be established for a period of 3 hours while functional and blood parameters are easily accessible. Moreover, because of the minimal priming volume, the novel ex vivo cardiac perfusion circuit allows for autologous perfusion, using the limited amount of blood available from the organ donating animal.
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Affiliation(s)
- Tanja Mayr
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
| | - Judith Jauch
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
| | - Sonja Guethoff
- Department of Cardiac Surgery, Ludwig Maximilian University, Munich, Germany
| | - Stefan Buchholz
- Department of Cardiac Surgery, Ludwig Maximilian University, Munich, Germany
| | - Bruno Reichart
- Walter Brendel Center, Ludwig Maximilian University, Munich, Germany
| | - Andreas Bauer
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
| | - Jan-Michael Abicht
- Department of Anaesthesiology, Ludwig Maximilian University, Munich, Germany
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22
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Brenner P, Mayr T, Guethoff S, Buchholz S, Pöttinger T, Lutzmann I, Werner F, Bauer A, Klymiuk N, Wolf E, Reimann K, Mohiuddin M, Hermanns W, Ayares D, McGregor C, Lambris J, Hagl C, Reichart B, Abicht JM. Costimulation Blockade with CD40mAb in (Life-Supporting) Heterotopic and Orthotopic Cardiac Xenotransplantation of GalT-KO/hCD46/hTM Transgenic Pig Hearts in a Pig-to-Baboon Model. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Abicht J, Mayr T, Reichart B, Buchholz S, Werner F, Lutzmann I, Schmoeckel M, Bauer A, Thormann M, Langenmayer M, Herbach N, Pohla H, Herzog R, McGregor CGA, Ayares D, Wolf E, Klymiuk N, Baehr A, Kind A, Hagl C, Ganswindt U, Belka C, Guethoff S, Brenner P. Pre‐clinical heterotopic intrathoracic heart xenotransplantation: a possibly useful clinical technique. Xenotransplantation 2015; 22:427-42. [DOI: 10.1111/xen.12213] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/19/2015] [Indexed: 01/24/2023]
Affiliation(s)
- Jan‐Michael Abicht
- Department of Anaesthesiology Ludwig‐Maximilian University Munich Germany
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
| | - Tanja Mayr
- Department of Anaesthesiology Ludwig‐Maximilian University Munich Germany
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
| | - Bruno Reichart
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
| | - Stefan Buchholz
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Fabian Werner
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Isabelle Lutzmann
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Michael Schmoeckel
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
- Department of Cardiac Surgery Asklepios Klinik St Georg Hamburg Germany
| | - Andreas Bauer
- Department of Anaesthesiology Ludwig‐Maximilian University Munich Germany
| | - Michael Thormann
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Martin Langenmayer
- Institute of Veterinary Pathology Ludwig Maximilian University Munich Germany
| | - Nadja Herbach
- Institute of Veterinary Pathology Ludwig Maximilian University Munich Germany
| | - Heike Pohla
- Tumor Immunology Laboratory LIFE Center Ludwig Maximilian University Munich Germany
| | - Rudolf Herzog
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
| | | | | | - Eckhard Wolf
- Department of Molecular Animal Breeding and Biotechnology Ludwig Maximilian University Munich Germany
| | - Nikolai Klymiuk
- Department of Molecular Animal Breeding and Biotechnology Ludwig Maximilian University Munich Germany
| | - Andrea Baehr
- Department of Molecular Animal Breeding and Biotechnology Ludwig Maximilian University Munich Germany
| | - Alexander Kind
- Chair of Livestock Biotechnology School of Life Sciences Weihenstephan Technical University of Munich Germany
| | - Christian Hagl
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Ute Ganswindt
- Department of Radiation Oncology Ludwig Maximilian University Munich Germany
| | - Claus Belka
- Department of Radiation Oncology Ludwig Maximilian University Munich Germany
| | - Sonja Guethoff
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
| | - Paolo Brenner
- Transregio Collaborative Research Center 127 Walter Brendel Centre of Experimental Medicine Ludwig Maximilian University Munich Germany
- Department of Cardiovascular Surgery Ludwig Maximilian University Munich Germany
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24
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Wolf-van Buerck L, Schuster M, Baehr A, Mayr T, Guethoff S, Abicht J, Reichart B, Nam-Apostolopoulos YC, Klymiuk N, Wolf E, Seissler J. Engraftment and reversal of diabetes after intramuscular transplantation of neonatal porcine islet-like clusters. Xenotransplantation 2015; 22:443-50. [PMID: 26490671 DOI: 10.1111/xen.12201] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 09/16/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Intraportal infusion is currently the method of choice for clinical islet cell transplantation but suffers from poor efficacy. As the liver may not represent an optimal transplantation site for Langerhans islets, we examined the potential of neonatal porcine islet-like clusters (NPICCs) to engraft in skeletal muscle as an alternative transplantation site. METHODS Neonatal porcine islet-like clusters were isolated from 2- to 5-day-old piglets and either transplanted under the kidney capsule (s.k.) or injected into the lower hindlimb muscle (i.m.) of streptozotocin-diabetic NOD-SCID IL2rγ(-/-) (NSG) mice. Survival, vascularization, maturation, and functional activity were analyzed by intraperitoneal glucose tolerance testing and immunohistochemical analyses. RESULTS Intramuscular transplantation of NPICCs resulted in development of normoglycemia and restored glucose homeostasis. Time to reversal of diabetes and glucose tolerance (AUC glucose and AUC insulin) did not significantly differ as compared to s.k. transplantation. Intramuscular grafts exhibited rapid neovascularization and graft composition with cytokeratin-positive ductal cells and beta cells at post-transplant weeks 2 and 8 and after establishment of normoglycemia was comparable in both groups. CONCLUSIONS Intramuscular injection represents a minimally invasive but efficient alternative for transplantation of NPICCs and, thus, offers an attractive alternative site for xenotransplantation approaches. These findings may have important implications for improving the outcome and the monitoring of pig islet xenotransplantation.
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Affiliation(s)
- Lelia Wolf-van Buerck
- Medizinische Klinik und Poliklinik IV-Campus Innenstadt, Diabetes Zentrum, Klinikum der Ludwig-Maximilians-Universität, München, Germany.,Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany
| | - Marion Schuster
- Medizinische Klinik und Poliklinik IV-Campus Innenstadt, Diabetes Zentrum, Klinikum der Ludwig-Maximilians-Universität, München, Germany.,Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany
| | - Andrea Baehr
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, München, Germany
| | - Tanja Mayr
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Department of Cardiac Surgery, Ludwig-Maximilians-Universität, München, Germany
| | - Sonja Guethoff
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Department of Cardiac Surgery, Ludwig-Maximilians-Universität, München, Germany
| | - Jan Abicht
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Department of Anesthesiology, Ludwig-Maximilians-Universität, München, Germany
| | - Bruno Reichart
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany
| | | | - Nikolai Klymiuk
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, München, Germany
| | - Eckhard Wolf
- Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany.,Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, München, Germany
| | - Jochen Seissler
- Medizinische Klinik und Poliklinik IV-Campus Innenstadt, Diabetes Zentrum, Klinikum der Ludwig-Maximilians-Universität, München, Germany.,Transregio Collaborative Research Center 127, Ludwig-Maximilians-Universität, München, Germany
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25
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Reichart B, Guethoff S, Mayr T, Buchholz S, Abicht JM, Kind AJ, Brenner P. Discordant Cellular and Organ Xenotransplantation—From Bench to Bedside. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-16441-0_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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26
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Wolf-van Bürck L, Schuster M, Bähr A, Klymiuk N, Mayr T, Abicht J, Güthoff S, Wolf E, Seissler J. Lokale LEA29Y Expression in porzinen Inselzellclustern schützt vor Transplantatabstoßung im Langzeit-humanisierten Mausmodell. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Brenner P, Abicht J, Guethoff S, Buchholz S, Mayr T, Bauer A, Blanck S, Kessler B, Wolf E, Becker C, Ayares D, Belka C, Hagl C, Reichart B. The Heterotopic Thoracic Cardiac Xenotransplantation Model (Pig-to-Baboon): Results With and Without a Myelodepressive Protocol. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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28
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Brenner P, Abicht JM, Guethoff S, Buchholz S, Mayr T, Bauer A, Blank S, Kessler B, Wolf E, Becker C, Ayares D, McGregor C, Belka C, Hagl C, Reichart B. The Heterotopic Thoracic Cardiac Xenotransplantation Model (Pig-to-baboon) in Two Different Groups without and with an Additional Myelodepressive Regime. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Abicht JM, Mayr T, Guethoff S, Werner F, Lutzmann I, Langenmayer M, Wolf E, Ayares D, Reimann K, Reichart B, Brenner P. Costimulation Blockade in a Heterotopic Thoracic Pig-to-baboon Cardiac Xenotransplantation Model. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Waechter M, Reichart B, Kindermann J, Mayr T, Brenner P, Hagl C, Langenmayer M, Wanke R, Beck P, Groll M, Abicht J, Guethoff S. Proteasome Inhibitors in Experimental Cardiac Transplantation. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Reichart B, Guethoff S, Brenner P, Poettinger T, Wolf E, Ludwig B, Kind A, Mayr T, Abicht JM. Xenotransplantation of Cells, Tissues, Organs and the German Research Foundation Transregio Collaborative Research Centre 127. Adv Exp Med Biol 2015; 865:143-55. [PMID: 26306448 DOI: 10.1007/978-3-319-18603-0_9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Human organ transplantation is the therapy of choice for end-stage organ failure. However, the demand for organs far exceeds the donation rate, and many patients die while waiting for a donor. Clinical xenotransplantation using discordant species, particularly pigs, offers a possible solution to this critical shortfall. Xenotransplantation can also increase the availability of cells, such as neurons, and tissues such as cornea, insulin producing pancreatic islets and heart valves. However, the immunological barriers and biochemical disparities between pigs and primates (human) lead to rejection reactions despite the use of common immunosuppressive drugs. These result in graft vessel destruction, haemorrhage, oedema, thrombus formation, and transplant loss. Our consortium is pursuing a broad range of strategies to overcome these obstacles. These include genetic modification of the donor animals to knock out genes responsible for xenoreactive surface epitopes and to express multiple xenoprotective molecules such as the human complement regulators CD46, 55, 59, thrombomodulin and others. We are using (new) drugs including complement inhibitors (e.g. to inhibit C3 binding), anti-CD20, 40, 40L, and also employing physical protection methods such as macro-encapsulation of pancreatic islets. Regarding safety, a major objective is to assure that possible infections are not transmitted to recipients. While the aims are ambitious, recent successes in preclinical studies suggest that xenotransplantation is soon to become a clinical reality.
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Affiliation(s)
- Bruno Reichart
- Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-Universität (LMU), Munich, Germany,
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Veronesi F, Corstanje R, Mayr T. Landscape scale estimation of soil carbon stock using 3D modelling. Sci Total Environ 2014; 487:578-586. [PMID: 24636454 DOI: 10.1016/j.scitotenv.2014.02.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 02/14/2014] [Accepted: 02/15/2014] [Indexed: 06/03/2023]
Abstract
Soil C is the largest pool of carbon in the terrestrial biosphere, and yet the processes of C accumulation, transformation and loss are poorly accounted for. This, in part, is due to the fact that soil C is not uniformly distributed through the soil depth profile and most current landscape level predictions of C do not adequately account the vertical distribution of soil C. In this study, we apply a method based on simple soil specific depth functions to map the soil C stock in three-dimensions at landscape scale. We used soil C and bulk density data from the Soil Survey for England and Wales to map an area in the West Midlands region of approximately 13,948 km(2). We applied a method which describes the variation through the soil profile and interpolates this across the landscape using well established soil drivers such as relief, land cover and geology. The results indicate that this mapping method can effectively reproduce the observed variation in the soil profiles samples. The mapping results were validated using cross validation and an independent validation. The cross-validation resulted in an R(2) of 36% for soil C and 44% for BULKD. These results are generally in line with previous validated studies. In addition, an independent validation was undertaken, comparing the predictions against the National Soil Inventory (NSI) dataset. The majority of the residuals of this validation are between ± 5% of soil C. This indicates high level of accuracy in replicating topsoil values. In addition, the results were compared to a previous study estimating the carbon stock of the UK. We discuss the implications of our results within the context of soil C loss factors such as erosion and the impact on regional C process models.
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Affiliation(s)
- F Veronesi
- Cranfield University, Bldg. 37, School of Applied Sciences, MK43 0AL Bedfordshire, United Kingdom
| | - R Corstanje
- Cranfield University, Bldg. 37, School of Applied Sciences, MK43 0AL Bedfordshire, United Kingdom
| | - T Mayr
- Cranfield University, Bldg. 37, School of Applied Sciences, MK43 0AL Bedfordshire, United Kingdom
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Ulaganathan V, Sperl B, Mayr T, Hornberger R, Rapp U, Ullrich A. 446: A gain of function by the cancer-associated FGFR4 c.1162G>A (p.Gly388Arg) variant. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50398-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abicht JM, Mayr T, Guethoff S, Buchholz S, Werner F, Baehr A, Klymiuk N, Wuensch A, Wolf E, Belka C, Ayares D, Petersen B, Niemann H, Bongoni AK, Rieben R, McGregor C, Reichart B, Brenner P. Ex-vivo testing and preclinical heterotopic thoracic cardiac xenotransplantation of multi-transgenic organs. Xenotransplantation 2014. [DOI: 10.1111/xen.12083_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jan-Michael Abicht
- Department of Anaesthesiology, Ludwig-Maximilians University; Munich Germany
| | - Tanja Mayr
- Department of Cardiac Surgery, Ludwig-Maximilians University; Munich Germany
| | - Sonja Guethoff
- Department of Cardiac Surgery, Ludwig-Maximilians University; Munich Germany
| | - Stefan Buchholz
- Department of Cardiac Surgery, Ludwig-Maximilians University; Munich Germany
| | - Fabian Werner
- Department of Cardiac Surgery, Ludwig-Maximilians University; Munich Germany
| | - Andrea Baehr
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians; Munich Germany
| | - Nikolai Klymiuk
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians; Munich Germany
| | - Annegret Wuensch
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians; Munich Germany
| | - Eckhart Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians; Munich Germany
| | - Claus Belka
- Department of Radiation Oncology, Ludwig-Maximilians University; Munich Germany
| | | | - Björn Petersen
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institute (FLI); Mariensee Germany
| | - Heiner Niemann
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institute (FLI); Mariensee Germany
| | - Anjan K. Bongoni
- Department of Clinical Research, and Graduate School of Cellular and Biomedical Sciences, University of Bern; Bern Switzerland
| | - Robert Rieben
- Department of Clinical Research, and Graduate School of Cellular and Biomedical Sciences, University of Bern; Bern Switzerland
| | | | - Bruno Reichart
- Walter-Brendel-Centre, Ludwig-Maximilians University Munich; Munich Germany
- University Munich; Munich Germany
| | - Paolo Brenner
- Department of Cardiac Surgery, Ludwig-Maximilians University; Munich Germany
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Kleinert E, Reichart B, Mayr T, Abicht JM, Brenner P, Hagl C, Langenmayer M, Wanke R, Deindl E, Guethoff S. RNase A in (Xeno)Transplantation. Xenotransplantation 2014. [DOI: 10.1111/xen.12083_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eike Kleinert
- Walter-Brendel-Centre of Experimental Medicine; Ludwig-Maximilians University; Munich Germany
| | - Bruno Reichart
- Transregio Collaborative Research Center 127; Ludwig-Maximilians University; Munich Germany
| | - Tanja Mayr
- Transregio Collaborative Research Center 127; Ludwig-Maximilians University; Munich Germany
- Department of Cardiac Surgery; Ludwig-Maximilians University; Munich Germany
| | - Jan-Michael Abicht
- Transregio Collaborative Research Center 127; Ludwig-Maximilians University; Munich Germany
- Department of Anaesthesiology; Ludwig-Maximilians University; Munich Germany
| | - Paolo Brenner
- Transregio Collaborative Research Center 127; Ludwig-Maximilians University; Munich Germany
- Department of Cardiac Surgery; Ludwig-Maximilians University; Munich Germany
| | - Christian Hagl
- Department of Cardiac Surgery; Ludwig-Maximilians University; Munich Germany
| | - Martin Langenmayer
- Institute of Veterinary Pathology; Ludwig-Maximilians University; Munich Germany
| | - Ruediger Wanke
- Institute of Veterinary Pathology; Ludwig-Maximilians University; Munich Germany
| | - Elisabeth Deindl
- Walter-Brendel-Centre of Experimental Medicine; Ludwig-Maximilians University; Munich Germany
| | - Sonja Guethoff
- Transregio Collaborative Research Center 127; Ludwig-Maximilians University; Munich Germany
- Department of Cardiac Surgery; Ludwig-Maximilians University; Munich Germany
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Kleinert E, Reichart B, Mayr T, Abicht JM, Brenner P, Hagl C, Langenmayer M, Wanke R, Deindl E, Guethoff S. RNase: A possible adjuvant in transplantation? Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1367309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Reichart B, Guethoff S, Mayr T, Thormann M, Buchholz S, Postrach J, Ayares D, Elliott RB, Tan P, Kind A, Hagl C, Brenner P, Abicht JM. Discordant cardiac xenotransplantation: broadening the horizons. Eur J Cardiothorac Surg 2013; 45:1-5. [DOI: 10.1093/ejcts/ezt483] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Buchholz S, Abicht J, Mayr T, Postrach J, Güthoff S, Thormann M, Michel S, Pargner R, Stegemann T, Fan JP, Pfahl K, Blank S, Wolf E, Becker C, Sotlar K, Ayares D, Schmitz C, Hagl C, Reichart B, Brenner P. Mean survival of 22 days in a worldwide first heterotopic thoracic pig-to-baboon cardiac xenotransplantation model. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bolivar J, Consolati T, Mayr T, Nidetzky B. Massentransportlimitierung als Parameter für das Design immobilisierter Biokatalysatoren: Nachweis intrapartikulärer Sauerstoffgradienten. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mayr T, Pechanska P, Ridwelski K, Mantke R, Pross M, Pertschy J, Manger T, Marusch F, Hinzmann B, Adams H, Rosenthal A. MicroRNA signatures from FFPE tissue distinguish patients with colorectal cancer of UICC stage I from those with metastatic disease of stage IV. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Adams H, Mayr T, Hinzmann B, Rosenthal A. Independent validation of a prognostic classifier (Predictor-C) in a set of 292 patients with colorectal cancer of UICC stage II. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Rosenthal A, Becker M, Klaman I, Mayr T, Pauli R, Hertel K, Helwig K, Fichtner I, Hoffmann J, Adams H, Hinzmann B. A RNA signature with high sensitivity and specificity discriminating between responder and nonresponder to cetuximab monotherapy in colorectal cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Adams H, Hinzmann B, Mayr T, Klaman I, Rosenthal A. Predictor c: A tissue-based IVD predicting progression of disease in colorectal cancer UICC stages II or III. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Mayr T, Abel T, Kraker E, Köstler S, Haase A, Konrad C, Tscherner M, Lamprecht B. An optical sensor array on a flexible substrate with integrated organic opto-electric devices. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.proeng.2010.09.279] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Kantartzis K, Stefan N, Thamer C, Machicao F, Staiger H, Machann J, Schick F, Fritsche A, Kazuaki M, Kuusisto J, Stančáková A, Mayr T, Laakso M, Kasuga M, Ezzat S, Ullrich A, Häring HU. Der FGFR4 Gly388Arg Polymorphismus – eine mögliche gemeinsame Grundlage von Krebs und Typ 2 Diabetes. DIABETOL STOFFWECHS 2009. [DOI: 10.1055/s-0029-1221881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Schachner T, Heiss S, Mayr T, Steger C, Zipponi D, Reisinger P, Bonaros N, Laufer G, Bonatti J. Connective tissue changes in a mouse model of vein graft disease. J Cardiovasc Surg (Torino) 2008; 49:269-276. [PMID: 18431349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM The extracellular matrix plays an important physiological role in the architecture of the vascular wall. In arterialized vein grafts severe early changes, such as thrombosis and neointimal hyperplasia occur. Paclitaxel is in clinical use as antiproliferative coating of coronary stents. We aimed to investigate the early connective tissue changes in arterialized vein grafts and the influence of perivascular paclitaxel treatment in an in vivo model. METHODS C57 black mice underwent interposition of the vena cava into the carotid artery. Neointimal hyperplasia, thrombosis, acid mucopolysaccharides (Alcian), collagen fibers (trichrome Masson), elastic fibers, and apoptosis rate (TUNEL) were quantified in paclitaxel treated veins and controls. RESULTS In both, controls and paclitaxel treated vein grafts acid mucopolysaccharides and elastic fibers were found predominantly in the neointima, whereas collagen fibers were found mainly in the media and adventitia. At 4 weeks postoperatively the neointimal thickness in controls was 52 (13-130) microm, whereas in 0.6 mg/mL l paclitaxel treated veins it was 103 (43-318) microm (P=0.094). At 8 weeks postoperatively paclitaxel treated veins showed a significantly increased neointimal thickness of 136 (87-199) microm compared with 79 (62-146) microm in controls (P=0.032). There was no difference in apoptosis rate between the two groups (P=NS). Even with the lowest concentration of 0.008 mg/mL paclitaxel veins showed a neointimal thickness of 67 (46-205) microm at 4 weeks postoperatively (P=NS vs controls). CONCLUSION Early vein graft disease is characterised by an accumulation of acid mucopolysaccharides and elastic fibers in the thickened neointima. Paclitaxel treatment increases the neointimal hyperplasia in mouse vein grafts in vivo.
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Affiliation(s)
- T Schachner
- Department of Cardiac Surgery, Innsbruck Medical University, Innsbruck, Austria.
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Moser C, Mayr T, Klimant I. Filter cubes with built-in ultrabright light-emitting diodes as exchangeable excitation light sources in fluorescence microscopy. J Microsc 2006; 222:135-40. [PMID: 16774522 DOI: 10.1111/j.1365-2818.2006.01581.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The use of ultrabright light-emitting diodes as a potential substitute for conventional excitation light sources in fluorescence microscopy is demonstrated. We integrated ultrabright light-emitting diodes in the filter block of a conventional fluorescence microscope together with a collimating Fresnel lens, a holographic diffuser and emission filters. This setup enabled convenient changes between different excitation light sources and resulted in high excitation efficiencies. Quantitative comparison of image intensities of test samples revealed that light-emitting diodes yielded intensities in the range of a mercury arc lamp depending on the wavelength. The use of ultrabright light-emitting diodes also enabled luminescence lifetime imaging without the need for image intensification.
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Affiliation(s)
- C Moser
- Graz University of Technology, Institute of Analytical Chemistry, Technikerstrasse 4, 8010 Graz, Austria
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Mayr T, Wencel D, Werner T. Fluorimetric determination of copper(II) in aqueous solution using lucifer yellow CH as selective metal reagent. Fresenius J Anal Chem 2001; 371:44-8. [PMID: 11605757 DOI: 10.1007/s002160100891] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Lucifer yellow CH is shown to be a highly selective fluorescent reagent for the determination of Cu(III) in the microg L(-1) concentration range. The fluorophore is statically quenched by Cu(II); the carbohydrazide group was assigned as the complexing part of the dye molecule. A total range of Cu(II) determination from 0.06 mg L(-1) (1 micromol L(-1)) to 6.3 mg L(-2) (100 micromol L(-1)) with a limit of detection of 0.019 mg L(-1) (0.3 micromol L(-1)) was obtained, along with surprisingly high selectivity. There was no interference from alkaline and earth alkaline metal ions. The cross sensitivity to heavy metal ions was evaluated by the separate solution method and by competitive binding experiments. Calibration plots are shown for Cu(II) determination at different pH and the dissociation constant was determined. The application of the reagent was demonstrated by the determination of the Cu(II) content of tap water samples.
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Affiliation(s)
- T Mayr
- University of Regensburg, Institute of Analytical Chemistry, Chemo- and Biosensors, Germany
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Abstract
An optical sensor for the measurement of salinity in seawater has been developed. It is based on a chloride-quenchable fluorescent probe (lucigenin) immobilized on a Nafion film. Two approaches for measuring salinity via chloride concentration are presented. In the first, a change in salinity corresponds to a change in the fluorescence intensity of lucigenin. In the second, the fluorescence intensity information is converted into a phase angle information by adding an inert phosphorescent reference luminophore (a ruthenium complex entrapped in poly(acrylonitrile) beads). Under these conditions, the chloride-dependent fluorescence intensity of lucigenin can be converted into a chloride-dependent fluorescence phase shift which serves as the analytical information. This scheme is referred to as dual lifetime referencing (DLR). The sensor was used to determine the salinity in seawater and brackish water of the North Sea.
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Affiliation(s)
- C Huber
- University of Regensburg, Institute of Analytical Chemistry, Chemo- and Biosensors, Germany
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Abstract
smad genes encode transcription factors involved in the signal transduction of members of the TGFbeta superfamily. We report here the cloning, characterization and genomic mapping of smad2, smad3 and smad4 from the zebrafish, Danio rerio. In Xenopus, smad2 overexpression has been shown to interfere with gastrulation and dorsal cell fate specification. However, full-length zebrafish smad2, although functionally active in Xenopus explants, has no effect when overexpressed in zebrafish embryos. In contrast, an N-terminally truncated, constitutively active version of Smad2 protein causes severe dorsalization or partial secondary axis formation, pointing to a role of Smad2 during mesoderm and axis formation. The temporal and spatial expression patterns of zebrafish smad2, 3 and 4 were investigated by developmental RT-PCR and whole mount in-situ hybridization. All three genes show strong and ubiquitous maternal expression. Zygotic expression is weak and ubiquitous in the case of smad2, and strong and ubiquitious in the case of smad4, while smad3 shows a spatially restricted zygotic expression pattern. It is expressed in migrating neural crest cells of the trunk and a subset of cells in the diencephalon in close proximity to the expression domain of the Nodal-related protein Cyclops/Ndr2/Znr1, a potential signal upstream of Smad2/3 required for eye-field separation and floor plate specification. Overexpression of truncated smad2 in cyclops mutant embryos leads to a rescue of the eye and floorplate defects. These data suggest that Smad2 acts as a mediator of Nodal signals during zebrafish midline signaling, while Smad3 might be involved in later steps of eye field separation.
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Affiliation(s)
- A Dick
- Max-Planck Institut für Immunbiologie, Stübeweg 51, D-79108, Freiburg, Germany
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