We aimed to evaluate, in this study, the effect of L. and L. in the amelioration of liver hypothermic conservation in male wistar rats. Livers from each rat were collected and preserved for 24 h at 4 °C in a Krebs solution with or without increasing doses of sage or rosemary infusions (25, 50, and 100 mg/mL). Liver hypothermic conservation induced a decrease in the activity of superoxide dismutase, catalase, and glutathione peroxidase and a significant increase in lipid peroxidation. L. infusion at 25 mg/mL normalized this oxidative disturbance but appears toxic at 50 and 100 mg/mL due to the presence of large amount of pyrogallol which contribute to the cytoplasmic alteration of hepatocytes. The addition of different doses of L. infusion induced an increase in catalase and glutathione peroxidase activities and a decrease in lipid peroxidation with an amelioration of cellular architecture. In conclusion, increasing doses of L. infusion protect against hepatic hypotermic-ischemia while L. infusion could have an hepatoprotective role when administrated at lower dose.
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http://dx.doi.org/10.1080/01635581.2019.1631359 | DOI Listing |
Exp Clin Transplant
December 2024
>From the Department of Hepatobiliary and Pancreatic Surgery and Liver Transplantation, Vall d'Hebron Hospital, Barcelona, Spain.
Marginal liver grafts, such as those from cardiac death donors and donors with steatotic organs, are highly vulnerable to ischemia-reperfusion injury. In addition, ex situ graft alteration, either by reduction or splitting, will prolong the static cold storage time and amplify the ischemia-reperfusion injury. Hypothermic oxygenated machine perfusion has the potential to end the oxygen deprivation during preservation and accordingly improve outcomes in some marginal grafts that have been traditionally discarded.
View Article and Find Full Text PDFmBio
January 2025
Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA.
Bacterial infections can induce exuberant immune responses that can damage host tissues. Previously, we demonstrated that systemic infection in mice causes tissue damage in the liver. This liver necrosis is associated with the expression of endogenous retroviruses, chromosomally integrated retroviruses that encode a reverse transcriptase.
View Article and Find Full Text PDFJ Clin Med
December 2024
Department of General, Visceral and Transplantation Surgery, LMU University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany.
Hypothermic oxygenated machine perfusion (HOPE) has emerged as a critical innovation in liver transplantation (LTx), offering significant protection against ischemia-reperfusion injury (IRI). This study focuses on quantifying and characterizing immune cells flushed out during HOPE to explore its effects on graft function and post-transplant outcomes. Fifty liver grafts underwent end-ischemic HOPE.
View Article and Find Full Text PDFLiver Transpl
October 2024
Department of General Surgery, Division of Transplantation, Medical University of Vienna, Vienna, Austria.
Hypothermic oxygenated machine perfusion (HOPE) preconditions liver grafts before transplantation. While beneficial effects on patient outcomes were demonstrated, biomarkers for viability assessment during HOPE are scarce and lack validation. This study aims to validate the predictive potential of perfusate flavin mononucleotide (FMN) during HOPE to enable the implementation of FMN-based assessment into clinical routine and to identify safe organ acceptance thresholds.
View Article and Find Full Text PDFTransplant Proc
January 2025
Experimental Pathology Department, Institut d'Investigacions Biomèdiques de Barcelona (IIBB)-CSIC, Barcelona, Spain; Steatohepatitis and Liver Transplant, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), CIBER ehd, Barcelona, Spain.
Static cold storage remains the traditional standard for liver graft preservation prior to transplantation in both clinical and experimental settings. The use of polyethylene glycol 35 solutions, such as Institut Georges Lopez-2 (IGL2) preservation solution, for protecting against mitochondrial damage during cold static preservation necessitates combination with hypothermic oxygenated perfusion to enhance liver graft performance. This study presents a preliminary comparative evaluation of "danger signals" indicating hepatocellular injury (transaminases, lactate content), mitochondrial damage (glutamate dehydrogenase release), and cytokine release in liver perfusates from suboptimal grafts (fatty livers) subjected to 24-hour cold storage.
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