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Quantitative Metabolomics of Tissue, Perfusate, and Bile from Rat Livers Subjected to Normothermic Machine Perfusion. Biomedicines 2022; 10:biomedicines10030538. [PMID: 35327340 PMCID: PMC8945564 DOI: 10.3390/biomedicines10030538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/16/2022] [Accepted: 02/21/2022] [Indexed: 12/13/2022] Open
Abstract
Machine perfusion (MP) allows the maintenance of liver cells in a metabolically active state ex vivo and can potentially revert metabolic perturbations caused by donor warm ischemia, procurement, and static cold storage (SCS). The present preclinical research investigated the metabolic outcome of the MP procedure by analyzing rat liver tissue, bile, and perfusate samples by means of high-field (600 MHz) nuclear magnetic resonance (NMR) spectroscopy. An established rat model of normothermic MP (NMP) was used. Experiments were carried out with the addition of an oxygen carrier (OxC) to the perfusion fluid (OxC-NMP, n = 5) or without (h-NMP, n = 5). Bile and perfusate samples were collected throughout the procedure, while biopsies were only taken at the end of NMP. Two additional groups were: (1) Native, in which tissue or bile specimens were collected from rats in resting conditions; and (2) SCS, in which biopsies were taken from cold-stored livers. Generally, NMP groups showed a distinctive metabolomic signature in all the analyzed biological matrices. In particular, many of the differentially expressed metabolites were involved in mitochondrial biochemical pathways. Succinate, acetate, 3-hydroxybutyrate, creatine, and O-phosphocholine were deeply modulated in ex vivo perfused livers compared to both the Native and SCS groups. These novel results demonstrate a broad modulation of mitochondrial metabolism during NMP that exceeds energy production and redox balance maintenance.
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CHEN W, LI K, ZHU S, LUO X, WANG Y, LIU Z, FANG Y, XIA Z. Glutathione ameliorates Hypoxia/Reoxygenation (H/R) induced hepatocyte oxidative damage via regulating HO-1 signaling. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.61221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Wuye CHEN
- First People Hospital of Huizhou, China
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Patrono D, Roggio D, Mazzeo AT, Catalano G, Mazza E, Rizza G, Gambella A, Rigo F, Leone N, Elia V, Dondossola D, Lonati C, Fanelli V, Romagnoli R. Clinical assessment of liver metabolism during hypothermic oxygenated machine perfusion using microdialysis. Artif Organs 2021; 46:281-295. [PMID: 34516020 PMCID: PMC9292750 DOI: 10.1111/aor.14066] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/17/2021] [Accepted: 09/05/2021] [Indexed: 12/12/2022]
Abstract
Background While growing evidence supports the use of hypothermic oxygenated machine perfusion (HOPE) in liver transplantation, its effects on liver metabolism are still incompletely understood. Methods To assess liver metabolism during HOPE using microdialysis (MD), we conducted an open‐label, observational pilot study on 10 consecutive grafts treated with dual‐HOPE (D‐HOPE). Microdialysate and perfusate levels of glucose, lactate, pyruvate, glutamate, and flavin mononucleotide (FMN) were measured during back table preparation and D‐HOPE and correlated to graft function and patient outcome. Results Median (IQR) MD and D‐HOPE time was 228 (210, 245) and 116 (103, 143) min. Three grafts developed early allograft dysfunction (EAD), with one requiring retransplantation. During D‐HOPE, MD glucose and lactate levels increased (ANOVA = 9.88 [p = 0.01] and 3.71 [p = 0.08]). Their 2nd‐hour levels were higher in EAD group and positively correlated with L‐GrAFT score. 2nd‐hour MD glucose and lactate were also positively correlated with cold ischemia time, macrovesicular steatosis, weight gain during D‐HOPE, and perfusate FMN. These correlations were not apparent when perfusate levels were considered. In contrast, MD FMN levels invariably dropped steeply after D‐HOPE start, whereas perfusate FMN was higher in dysfunctioning grafts. Conclusion MD glucose and lactate during D‐HOPE are markers of hepatocellular injury and could represent additional elements of the viability assessment.
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Affiliation(s)
- Damiano Patrono
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Dorotea Roggio
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy.,Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Anna Teresa Mazzeo
- Anaesthesia, Critical Care and Emergency, A.O.U. Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy.,Anesthesia and Intensive Care, Department of Adult and Pediatric Pathology, University of Messina, Messina, Italy
| | - Giorgia Catalano
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Elena Mazza
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Giorgia Rizza
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Alessandro Gambella
- Pathology Unit, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Federica Rigo
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Nicola Leone
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Vincenzo Elia
- Anaesthesia, Critical Care and Emergency, A.O.U. Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Daniele Dondossola
- General and Liver Transplant Surgery Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi of Milan, Milan, Italy
| | - Caterina Lonati
- Center for Preclinical Research, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Vito Fanelli
- Anaesthesia, Critical Care and Emergency, A.O.U. Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Renato Romagnoli
- General Surgery 2U - Liver Transplant Unit, Department of Surgical Sciences, A.O.U. Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
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