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hypothermic machine perfusion

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https://www.readbyqxmd.com/read/29434725/a-novel-hypothermic-machine-perfusion-system-using-a-lifeport-kidney-transporter-for-the-preservation-of-rat-liver
#1
Cheng Zeng, Xiaoyan Hu, Yanfeng Wang, Xianpeng Zeng, Yan Xiong, Ling Li, Qifa Ye
The protective mechanisms for liver preservation associated with hypothermic machine perfusion (HMP) remain unclear. However, the lack of a common and portable HMP system for rat livers limits the study of HMP. The present study aimed to develop a novel, modified HMP system using a LifePort Kidney Transporter for preserving rat livers. A simple 'Y' shunt combined with a pressoreceptor for flow and pressure regulation was adapted to perfuse rat livers via the portal vein continuously using a LifePort Kidney Transporter under its 'prime mode' setting...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29407336/perfusion-parameters-of-donation-after-cardiac-death-kidneys-predict-early-transplant-outcomes-based-on-expanded-criteria-donor-designation
#2
Q Tai, W Xue, X Ding, P Tian, H Xiang, X Feng, H Yan, J Hou
BACKGROUND: Donation after cardiac death is the only source of the deceased donor in China at present. Hypothermic machine perfusion has been used increasingly over the years. We determined the hypothermic machine perfusion parameters associated with early transplant outcomes based on the expanded criteria donor (ECD) designation. METHODS: There were 446 consecutive kidneys donated after cardiac death and preserved by hypothermic machine perfusion (LifePort) in our center that were included in this study...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407316/functional-results-of-renal-preservation-in-hypothermic-pulsatile-machine-perfusion-versus-cold-preservation-systematic-review-and-meta-analysis-of-clinical-trials
#3
L Martínez Arcos, J J Fabuel Alcañiz, V Gómez Dos Santos, F J Burgos Revilla
BACKGROUND: Hypothermic pulsatile machine perfusion (HPMP) decreases the rate of delayed graft function (DGF) in kidney grafts, compared with cold storage. However, it is not clear its use in the different subgroups of grafts. The objective was to review systematically all studies with better methodologic quality that compare HPMP versus cold storage. METHODS: A systematic review was performed. The sources were Pubmed, Pubmed Central, Cochrane Library, Clinical Key, and Ovid...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29369470/hypothermic-oxygenated-machine-perfusion-reduces-bile-duct-reperfusion-injury-after-transplantation-of-donation-after-circulatory-death-livers
#4
Rianne van Rijn, Otto B van Leeuwen, Alix P M Matton, Laura C Burlage, Janneke Wiersema-Buist, Marius C van den Heuvel, Ruben H J de Kleine, Marieke T de Boer, Annette S H Gouw, Robert J Porte
INTRODUCTION: Dual hypothermic oxygenated machine perfusion (DHOPE) of the liver has been advocated as a method to reduce ischemia-reperfusion injury. This study aimed to determine whether DHOPE reduces IR injury of the bile ducts in DCD liver transplantation. MATERIALS AND METHODS: In a recently performed phase 1-trial, ten DCD livers were preserved with DHOPE after static cold storage (SCS) (www.trialregister.nl NTR4493). Bile duct biopsies were obtained at the end of SCS (before DHOPE; baseline) and after graft reperfusion in the recipient...
January 25, 2018: Liver Transplantation
https://www.readbyqxmd.com/read/29325720/development-of-pancreatic-machine-perfusion-translational-steps-from-porcine-to-human-models
#5
Karim Hamaoui, Sally Gowers, Bynvant Sandhu, Natalie Vallant, Terry Cook, Martyn Boutelle, Daniel Casanova, Vassilios Papalois
BACKGROUND: Hypothermic machine perfusion (HMP) is increasingly being used for extended criteria kidney grafts. Pancreatic HMP is challenging because physiologically the pancreas is a low-flow organ susceptible to edema. We report the successful development of preclinical HMP models using porcine pancreases, as well as human pancreases unsuitable for clinical transplantation. METHODS: Ten porcine pancreases were used in the development of these perfusion models...
January 8, 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29278454/hypothermic-machine-perfusion-in-liver-transplantation
#6
R Cutler Quillin, James V Guarrera
A finite supply of donor organs has led many transplant centers to accept marginal liver allografts with increasing frequency. These allografts may be at higher risk of primary non-function, early allograft dysfunction and other recipient complications following liver transplantation. Machine perfusion preservation is an emerging technology that limits ischemia-reperfusion injury associated with preservation and may lead to improved outcomes following transplantation. Increased used of machine perfusion in liver preservation may permit an expansion of the donor pool...
December 26, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29142469/hypothermic-machine-perfusion-with-metformin-university-of-wisconsin-solution-for-ex-vivo-preservation-of-standard-and-marginal-liver-grafts-in-a-rat-model
#7
Yi-Chao Chai, Guo-Xin Dang, Hai-Qi He, Jian-Hua Shi, Hong-Ke Zhang, Rui-Tao Zhang, Bo Wang, Liang-Shuo Hu, Yi Lv
AIM: To compare the effect of University of Wisconsin (UW) solution with or without metformin, an AMP-activated protein kinase (AMPK) activator, for preserving standard and marginal liver grafts of young and aged rats ex vivo by hypothermic machine perfusion (HMP). METHODS: Eighteen young (4 mo old) and 18 aged (17 mo old) healthy male SD rats were selected and randomly divided into three groups: control group, UW solution perfusion group (UWP), and UW solution with metformin perfusion group (MUWP)...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29136348/outcomes-of-donation-after-circulatory-death-kidneys-undergoing-hypothermic-machine-perfusion-following-static-cold-storage-a-uk-population-based-cohort-study
#8
Kamlesh Patel, Jay Nath, James Hodson, Nick Inston, Andrew Ready
Evidence is currently lacking regarding the outcomes of kidneys undergoing Hypothermic Machine Perfusion (HMP) in the UK. Using the National Health Service Blood and Transplant database, the authors compared outcomes for recipients of single organ Donation after Circulatory Death (DCD) kidneys preserved with HMP to those using only static cold storage (SCS). Between 2007 and 2015, HMP was used in 19.1% (864/4,529) of kidneys. Rates of delayed graft function (DGF) were significantly lower in organs preserved with HMP than for SCS (34...
November 14, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29108514/hypothermic-oxygenated-machine-perfusion-for-liver-transplantation-an-initial-experience
#9
Damiano Patrono, Bruna Lavezzo, Luca Molinaro, Giorgia Rizza, Giorgia Catalano, Federica Gonella, Mauro Salizzoni, Renato Romagnoli
OBJECTIVES: Due to widespread exploitation of extended criteria donors, machine perfusion is emerging as an alternative to static cold storage for organ preservation. Hypothermic oxygenated machine perfusion has been associated with improved outcomes after liver transplant, both in laboratory and clinical settings. Here, we present our initial experience with hypothermic oxygenated machine perfusion, evaluating incidence of postreperfusion syndrome, early allograft dysfunction, and long-term biliary complications...
October 31, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29039506/hypothermic-machine-perfusion-ameliorates-inflammation-during-ischemia%C3%A2-reperfusion-injury-via-sirtuin%C3%A2-1%C3%A2-mediated-deacetylation-of-nuclear-factor%C3%A2-%C3%AE%C2%BAb-p65-in-rat-livers-donated-after-circulatory-death
#10
Cheng Zeng, Xiaoyan Hu, Weiyang He, Yanfeng Wang, Ling Li, Yan Xiong, Qifa Ye
Hypothermic machine perfusion (HMP) effectively reduces ischemia‑reperfusion injury (IRI) in livers donated after circulatory death (DCD) when compared with cold storage (CS). However, the underlying mechanisms remain unclear. The current study aimed to investigate the cellular mechanisms by which HMP ameliorates the inflammatory response during IRI. Adult male Sprague‑Dawley rat livers were exposed to 30 min of warm ischemia following cardiac arrest and preserved by CS or HMP for 3 h (n=3 per group)...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29023512/the-ultrastructural-characteristics-of-porcine-hepatocytes-donated-after-cardiac-death-and-preserved-with-warm-machine-perfusion-preservation
#11
Hiroki Bochimoto, Naoto Matsuno, Yo Ishihara, Tatsuya Shonaka, Daisuke Koga, Yoshiki Hira, Yuji Nishikawa, Hiroyuki Furukawa, Tsuyoshi Watanabe
The effects of warm machine perfusion preservation of liver grafts donated after cardiac death on the intracellular three-dimensional ultrastructure of the organelles in hepatocytes remain unclear. Here we analyzed comparatively the ultrastructure of the endomembrane systems in porcine hepatocytes under warm ischemia and successive hypothermic and midthermic machine perfusion preservation, a type of the warm machine perfusion. Porcine liver grafts which had a warm ischemia time of 60 minutes were perfused for 4 hours with modified University of Wisconsin gluconate solution...
2017: PloS One
https://www.readbyqxmd.com/read/29018070/hypothermic-oxygenated-machine-perfusion-hope-for-orthotopic-liver-transplantation-of-human-liver-allografts-from-extended-criteria-donors-ecd-in-donation-after-brain-death-dbd-a-prospective-multicentre-randomised-controlled-trial-hope-ecd-dbd
#12
Zoltan Czigany, Wenzel Schöning, Tom Florian Ulmer, Jan Bednarsch, Iakovos Amygdalos, Thorsten Cramer, Xavier Rogiers, Irinel Popescu, Florin Botea, Jiří Froněk, Daniela Kroy, Alexander Koch, Frank Tacke, Christian Trautwein, Rene H Tolba, Marc Hein, Ger H Koek, Cornelis H C Dejong, Ulf Peter Neumann, Georg Lurje
INTRODUCTION: Orthotopic liver transplantation (OLT) has emerged as the mainstay of treatment for end-stage liver disease. In an attempt to improve the availability of donor allografts and reduce waiting list mortality, graft acceptance criteria were extended increasingly over the decades. The use of extended criteria donor (ECD) allografts is associated with a higher incidence of primary graft non-function and/or delayed graft function. As such, several strategies have been developed aiming at reconditioning poor quality ECD liver allografts...
October 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28923649/hypothermic-machine-perfusion-s-protection-on-porcine-kidney-graft-uncovers-greater-akt-erk-phosphorylation
#13
N He, J-H Li, J-J Jia, K-D Xu, Y-F Zhou, L Jiang, H-H Lu, S-Y Yin, H-Y Xie, L Zhou, S-S Zheng
BACKGROUND: To investigate the potential mechanisms of hypothermic machine perfusion (HMP)'s beneficial effects on kidney graft over static cold storage (SCS) in vitro. METHODS: Ten kidneys of 5 Bama miniature male pigs were paired into 2 groups: SCS group and HMP group. Preservation solutions were taken at 0, 1, 3, and 6 hours for the measurement of K(+), Na(+), Cl(-), blood urea nitrogen (BUN), creatinine (Cr), and lactate dehydrogenase (LDH) using the standard laboratory methods...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28922301/hypothermic-liver-perfusion
#14
Andrea Schlegel, Xavier Muller, Philipp Dutkowski
PURPOSE OF REVIEW: The review describes recent developments in hypothermic machine liver perfusion with a special focus on underlying protective mechanisms, and the role of this perfusion technique in high-risk donor-recipient combinations. RECENT FINDINGS: To maximize the number of transplantable donor livers, several centres are exploring new machine preservation techniques. In this context, hypothermic machine perfusion has been recently introduced into the clinical setting of human liver transplantation, and the effect of endischemic cold liver perfusion on posttransplant complications is currently under investigation in two multicentre, randomized controlled trials...
December 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28870676/hypothermic-oxygenated-perfusion-hope-for-fatty-liver-grafts-in-rats-and-humans
#15
Philipp Kron, Andrea Schlegel, Leandro Mancina, Pierre-Alain Clavien, Philipp Dutkowski
BACKGROUND & AIMS: Pretreatment of marginal organs by perfusion is a promising opportunity to make more organs available for transplantation. Protection of human donation after cardiac death (DCD) livers by a novel machine perfusion technique, hypothermic oxygenated perfusion (HOPE), was recently established. Herein, we tested whether HOPE is also useful for fatty liver grafts, using a rodent transplant model. METHODS: Rats were fed over three weeks with a special methionine-choline-deficient diet (MCDD) to induce severe hepatic macrosteatosis (≥60%)...
September 21, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28807212/comparison-of-normothermic-and-hypothermic-perfusion-in-porcine-kidneys-donated-after-cardiac-death
#16
COMPARATIVE STUDY
Matthew F Blum, Qiang Liu, Basem Soliman, Paul Dreher, Toshihiro Okamoto, Emilio D Poggio, David A Goldfarb, William M Baldwin, Cristiano Quintini
BACKGROUND: Normothermic machine perfusion (NMP) is an alternative strategy for preserving kidneys donated after cardiac death (DCD). The relative efficacy of prolonged NMP compared to hypothermic machine perfusion (HMP) in DCD kidneys with moderate ischemic injury is undetermined. This study compares NMP and HMP kidney preservation in a porcine DCD model. METHODS: Ten porcine kidneys underwent NMP or HMP preservation following 45 minutes of warm ischemia and 5 hours of cold ischemia...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28805266/hypothermic-pulsatile-preservation-of-kidneys-from-uncontrolled-deceased-donors-after-cardiac-arrest-a-retrospective-study
#17
Xavier Matillon, Fabrice Danjou, Palmina Petruzzo, Olivier Thaunat, Thomas Rimmele, Claire Delsuc, Alexandre Faure, Maud Rabeyrin, Vannary Meas Yedid, William Hanf, Emmanuel Morelon, Lionel Badet, Ricardo Codas
Kidneys from uncontrolled donors after cardiac arrest (uDCD) suffer from a period of warm ischemia between cardiac arrest and cold flushing. Aim of the study was to evaluate renal outcomes of uDCD kidneys selected on the basis of renal Resistance Index (RI) and its influence on graft function and survival. The study included 44 kidneys procured from 26 uDCD starting 1.1.2006 until 12.31.2013. The donors (Maastricht category II) underwent cardiopulmonary resuscitation by assisted ventilation and chest compression; the organs were preserved with in situ cold perfusion or a normothermic regional perfusion...
August 14, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28639291/perfusion-of-isolated-rat-kidney-with-mesenchymal-stromal-cells-extracellular-vesicles-prevents-ischaemic-injury
#18
Marilena Gregorini, Valeria Corradetti, Eleonora Francesca Pattonieri, Chiara Rocca, Samantha Milanesi, Andrea Peloso, Silvana Canevari, Loris De Cecco, Matteo Dugo, Maria Antonietta Avanzini, Melissa Mantelli, Marcello Maestri, Pasquale Esposito, Stefania Bruno, Carmelo Libetta, Antonio Dal Canton, Teresa Rampino
Kidney donation after circulatory death (DCD) is a less than ideal option to meet organ shortages. Hypothermic machine perfusion (HMP) with Belzer solution (BS) improves the viability of DCD kidneys, although the graft clinical course remains critical. Mesenchymal stromal cells (MSC) promote tissue repair by releasing extracellular vesicles (EV). We evaluated whether delivering MSC-/MSC-derived EV during HMP protects rat DCD kidneys from ischaemic injury and investigated the underlying pathogenic mechanisms...
June 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28587173/design-and-implementation-of-a-hypothermic-machine-perfusion-device-for-clinical-preservation-of-isolated-organs
#19
Fei Shen, Ruqiang Yan
The imbalance between limited organ supply and huge potential need has hindered the development of organ-graft techniques. In this paper a low-cost hypothermic machine perfusion (HMP) device is designed and implemented to maintain suitable preservation surroundings and extend the survival life of isolated organs. Four necessary elements (the machine perfusion, the physiological parameter monitoring, the thermostatic control and the oxygenation apparatus) involved in this HMP device are introduced. Especially during the thermostatic control process, a modified Bayes estimation, which introduces the concept of improvement factor, is realized to recognize and reduce the possible measurement errors resulting from sensor faults and noise interference...
June 1, 2017: Sensors
https://www.readbyqxmd.com/read/28573190/randomized-trial-of-machine-perfusion-versus-cold-storage-in-recipients-of-deceased-donor-kidney-transplants-with-high-incidence-of-delayed-graft-function
#20
Helio Tedesco-Silva, Juliano Chrystian Mello Offerni, Vanessa Ayres Carneiro, Mayara Ivani de Paula, Elias David Neto, Francine Brambate Carvalhinho Lemos, Lúcio Roberto Requião Moura, Alvaro Pacheco E Silva Filho, Mirian de Fátima de Morais Cunha, Erica Francisco da Silva, Luiz Antonio Miorin, Daniela Priscila Demetrio, Paulo Sérgio Luconi, Waldere Tania da Silva Luconi, Savina Adriana Bobbio, Liz Milstein Kuschnaroff, Irene Lourdes Noronha, Sibele Lessa Braga, Renata Cristina Barsante, João Cezar Mendes Moreira, Ida Maria Maximina Fernandes-Charpiot, Mario Abbud-Filho, Luis Gustavo Modelli de Andrade, Paula Dalsoglio Garcia, Luciana Tanajura Santamaria Saber, Alan Fernandes Laurindo, Pedro Renato Chocair, Américo Lourenço Cuvello Neto, Juliana Aparecida Zanocco, Antonio Jose Duboc de Almeida Soares Filho, Wilson Ferreira Aguiar, Jose Medina Pestana
BACKGROUND: This study compared the use of static cold storage versus continuous hypothermic machine perfusion in a cohort of kidney transplant recipients at high risk for delayed graft function (DGF). METHODS: In this national, multicenter, and controlled trial, 80 pairs of kidneys recovered from brain-dead deceased donors were randomized to cold storage or machine perfusion, transplanted, and followed up for 12 months. The primary endpoint was the incidence of DGF...
May 2017: Transplantation Direct
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