Article
Medicine, Research & Experimental
Thomas Minor, Charlotte von Horn, Hristo Zlatev, Fuat Saner, Melanie Grawe, Bastian Lueer, Eva-Maria Huessler, Nils Kuklik, Andreas Paul
Summary: This study tested the concept of mitigating reperfusion injury of liver grafts by gentle warming-up using ex vivo machine perfusion prior to reperfusion. The results showed that controlling the rewarming kinetics before blood reperfusion can safely and effectively mitigate rewarming/reperfusion injury of liver grafts.
CTS-CLINICAL AND TRANSLATIONAL SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Hristo Zlatev, Charlotte von Horn, Thomas Minor
Summary: Controlled rewarming after extended cold preservation effectively improves mitochondrial recovery upon reperfusion and early functional outcome of kidney grafts.
Article
Medicine, General & Internal
Hristo Zlatev, Charlotte von Horn, Moritz Kaths, Andreas Paul, Thomas Minor
Summary: Controlled oxygenated rewarming (COR) during short-term pre-transplant machine perfusion significantly improves early allograft function by increasing creatinine clearance. Real-time parameters such as lactate and TIMP2 show good correlation with subsequent graft function, while conventional kidney donor risk index KDRI is less predictive.
EUROPEAN JOURNAL OF CLINICAL INVESTIGATION
(2022)
Article
Gastroenterology & Hepatology
Andrea Schlegel, Matteo Mueller, Xavier Mueller, Janina Eden, Rebecca Panconesi, Stefanie von Felten, Klaus Steigmiller, Richard X. Sousa Da Silva, Olivier de Rougemont, Jean-Yves Mabrut, Mickael Lesurtel, Miriam Cortes Cerisuelo, Nigel D. Heaton, Marc Antoine Allard, Rene Adam, Diethard Monbaliu, Ina Jochmans, Martijn P. D. Haring, Robert J. Porte, Alessandro Parente, Paolo Muiesan, Philipp Kron, Magdy Attia, Dagmar Kollmann, Gabriela Berlakovich, Xavier Rogiers, Karin Petterson, Anne L. Kranich, Stefanie Amberg, Beat Mullhaupt, Pierre-Alain Clavien, Philipp Dutkowski
Summary: Hypothermic oxygenated perfusion (HOPE) after cold storage of donated livers reduces the incidence of complications and graft failure in liver transplantation.
JOURNAL OF HEPATOLOGY
(2023)
Article
Immunology
Baran Ogurlu, Carolina C. Pamplona, Isa M. Van Tricht, Tim L. Hamelink, Veerle A. Lantinga, Henri G. D. Leuvenink, Cyril Moers, Merel B. F. Pool
Summary: This study suggests that gradual rewarming during controlled oxygenated rewarming (COR) before normothermic machine perfusion (NMP) can provide the best protective effect against rewarming injury. Specifically, a rewarming rate of 1.10%/min during COR-120 results in superior immediate tubular function and energetic recovery during NMP.
Article
Medicine, Research & Experimental
George J. Dugbartey, Max Y. Zhang, Winnie Liu, Aaron Haig, Patrick McLeod, Jacqueline Arp, Alp Sener
Summary: In the experiment, it was found that preserving renal grafts in STS-supplemented UW solution can protect against prolonged cold IRI by suppressing apoptotic and inflammatory pathways, improving graft function, and prolonging recipient survival. This novel therapeutic strategy may help minimize the detrimental clinical outcome of prolonged cold IRI in kidney transplantation.
BIOMEDICINE & PHARMACOTHERAPY
(2022)
Article
Biochemistry & Molecular Biology
Madison McGraw, David Miller, Sorena Lo, Nirmala Parajuli
Summary: Cold storage-mediated inflammation is a significant concern in kidney transplantation, but the mechanisms involved are not well understood. This study investigated the role of STAT proteins, particularly STAT1 and STAT3, using in vivo and in vitro models. The results showed increased expression of IFN-gamma and STAT1 after cold storage and transplantation. Additionally, dephosphorylation of STAT3 was observed after cold storage, indicating dysregulation of anti-inflammatory signaling. In vitro experiments further demonstrated increased IFN-gamma expression and downstream activation of STAT1 and iNOS after cold storage and rewarming. These findings suggest that targeting Jak/STAT signaling during cold storage could potentially improve transplant outcomes for kidneys from deceased donors.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Pathology
Francesco Vasuri, Mattia Riefolo, Matteo Ravaioli, Matteo Cescon, Gianandrea Pasquinelli, Giuliana Germinario, Antonia D'Errico
Summary: This study aimed to validate the impact of graft histology on transplant outcome and found that grafts with portal fibrosis stage = 3 had a higher incidence of early allograft dysfunction and 6-month dysfunction. Portal inflammation and lobular fibrosis were also correlated with post-transplant kidney function and graft survival. However, the use of HOPE significantly reduced the risk factor of portal inflammation on graft survival.
PATHOLOGY RESEARCH AND PRACTICE
(2023)
Article
Physiology
Sorena Lo, Li Jiang, Savannah Stacks, Haixia Lin, Nirmala Parajuli
Summary: This study revealed that cold storage leads to aberrant activation of complement components in renal grafts following transplantation, with increased levels of C3 and C5b-9. Additionally, cold storage induced local C3 biogenesis in renal proximal cells/tubules, and TNF-alpha was found to promote C3 biogenesis and activation in renal proximal tubular cells.
AMERICAN JOURNAL OF PHYSIOLOGY-RENAL PHYSIOLOGY
(2021)
Article
Multidisciplinary Sciences
Fenna E. M. van de Leemkolk, M. Letizia Lo Faro, Sadr F. Shaheed, John Mulvey, Volkert A. L. Huurman, Ian P. J. Alwayn, Hein Putter, Ina Jochmans, Jan H. N. Lindeman, Rutger Ploeg
Summary: This study aimed to validate flavin mononucleotide (FMN) as a biomarker for kidney quality during machine perfusion, but the results showed that FMN was not associated with post-transplant kidney function.
Article
Chemistry, Multidisciplinary
Akinori Honda, Nachi Ueno, Koki Fujiwara, Hirofumi Masuhara, Kazuo Miyamura
Summary: The thermal behavior of alkylated diarylethene molecules (DAE-Cn) was investigated. It was found that DAE-C1 and DAE-C2 exhibited cold crystallization and DAE-Cn showed photoisomerization. Visible light irradiation resulted in the formation of the open-ring isomer, while UV light irradiation transformed it into the closed-ring isomer. Cold crystallization could be inhibited by UV irradiation and triggered by visible light, indicating that heat storage could be photo-controlled.
Article
Critical Care Medicine
Kristin Wisloff-Aase, Helge Skulstad, Jan Otto Beitnes, Runar Lundblad, Per Steinar Halvorsen, Arnt Fiane, Andreas Espinoza
Summary: Hypothermia can reversibly impair myocardial function, particularly diastolic function, in patients with normal left ventricular function. Increased heart rate further reduces systolic function due to impeded filling. These changes are rapidly reversed after rewarming.
CRITICAL CARE MEDICINE
(2022)
Article
Physiology
Hitoshi Wakabayashi, Koji Sugiyama, Shinichi Suzuki, Yasuko Sakihama, Makoto Hashimoto, Martin J. Barwood
Summary: This study investigated the effects of beetroot ingestion on cold-induced vasodilation and rewarming process. The results showed that beetroot supplementation accelerated the rewarming of finger skin temperature and increased finger skin blood flow. However, it did not affect the vasodilation response during hand immersion in cold water.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Julia Tobacyk, K. C. Grishma, Lee Ann MacMillan-Crow
Summary: This study investigated the role of OMA1 in OPA1 proteolytic processing during renal cold storage and rewarming, revealing that OMA1 plays a significant role in the injury caused by renal cell cold storage.
Article
Environmental Sciences
Hao Wu, Tingjie Zhan, Shixuan Cui, Jiayan Chen, Qinyang Jin, Weiping Liu, Chunlong Zhang, Shulin Zhuang
Summary: The study revealed that anthracene and its derivatives can disrupt vascular endothelial barrier function in human umbilical vein endothelial cells, leading to paracellular gap formation, downregulation of cell junction protein expression, thus providing essential in vitro evidence for their association with adverse cardiovascular outcomes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)