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Hepatic ischemia reperfusion

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https://www.readbyqxmd.com/read/29228666/granulocyte-colony-stimulating-factor-treatment-in-non-alcoholic-fatty-liver-disease-beyond-marrow-cell-mobilization
#1
Ho Hyun Nam, Dae Won Jun, Kiseok Jang, Waqar Khalid Saeed, Jai Sun Lee, Hyeon Tae Kang, Yeon Ji Chae
Protective effects of granulocyte colony stimulating factor (G-CSF) in acute liver injury via marrow cell mobilization have been reported in several studies. But exact mode of action and optimal protocol of G-CSF has been still doubt in chronic disease. Here we investigated mode of action and optimization of G-CSF as a treatment for non-alcoholic fatty liver disease (NAFLD). Various doses of conventional G-CSF (30 μg/kg once weekly, once daily for 5 days, twice weekly) and long acting G-CSF (30 μg/kg once a month) were evaluated in two kinds of NAFLD animal models to optimize the G-CSF protocol...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227475/an-alox12-12-hete-gpr31-signaling-axis-is-a-key-mediator-of-hepatic-ischemia-reperfusion-injury
#2
Xiao-Jing Zhang, Xu Cheng, Zhen-Zhen Yan, Jing Fang, Xiaozhan Wang, Weijun Wang, Zhen-Yu Liu, Li-Jun Shen, Peng Zhang, Pi-Xiao Wang, Rufang Liao, Yan-Xiao Ji, Jun-Yong Wang, Song Tian, Xue-Yong Zhu, Yan Zhang, Rui-Feng Tian, Lin Wang, Xin-Liang Ma, Zan Huang, Zhi-Gang She, Hongliang Li
Hepatic ischemia-reperfusion (IR) injury is a common clinical issue lacking effective therapy and validated pharmacological targets. Here, using integrative 'omics' analysis, we identified an arachidonate 12-lipoxygenase (ALOX12)-12-hydroxyeicosatetraenoic acid (12-HETE)-G-protein-coupled receptor 31 (GPR31) signaling axis as a key determinant of the hepatic IR process. We found that ALOX12 was markedly upregulated in hepatocytes during ischemia to promote 12-HETE accumulation and that 12-HETE then directly binds to GPR31, triggering an inflammatory response that exacerbates liver damage...
December 11, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29196105/asiatic-acid-ameliorates-hepatic-ischemia-reperfusion-injury-in-rats-via-mitochondria-targeted-protective-mechanism
#3
Yapeng Lu, Huiwen Kan, Ying Wang, Dan Wang, Xueting Wang, Jing Gao, Li Zhu
It has been proved that asiatic acid (AA) directly targets mitochondria and acts as a mild mitochondrial uncoupler. In this study, we aim to investigate the protective effects of AA against ischemia/reperfusion (I/R)-induced liver injury in rats and some underlying mechanisms involved were elucidated. The results showed that 50mg/kg AA pre-treatment significantly reduced I/R-induced liver damage, characterized by the decreased release of aspartate aminotransferase (AST) and TNF-α. Furthermore, AA pre-treatment dramatically inhibited the production of MDA and increased the hepatic SOD, catalase activities and GSH levels in liver tissue of I/R rats which indicated that AA ameliorated I/R-induced liver damage by reducing oxidative stress...
November 28, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29194686/new-insights-into-the-role-and-mechanism-of-c-jun-n-terminal-kinase-signaling-in-the-pathobiology-of-liver-diseases
#4
REVIEW
Sanda Win, Tin Aung Than, Jun Zhang, Christina Oo, Robert Win Maw Min, Neil Kaplowitz
Mitogen-activated protein kinase (MAPK) signaling in the liver occurs in response to physical and chemical stress, including alterations in nutrients, growth factors, cytokines, extracellular matrix, DNA damage, drugs and toxins. This signaling pathway plays a role in liver injury and diseases such as drug induced hepatotoxicity, viral hepatitis, infection and inflammation, NAFLD, NASH, ALD, ischemia/reperfusion, fibrosis, regeneration, and carcinogenesis (1-4). In mammals, three major groups of MAPK have been identified...
November 30, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29191677/inhibition-of-toll-like-receptor-4-ameliorates-experimental-postischemic-injury-in-the-cholestatic-liver-through-inhibition-of-high-mobility-group-box-protein-b1-hmgb1-signaling
#5
Tsuyoshi Yokoi, Yukihiro Yokoyama, Toshio Kokuryo, Junpei Yamaguchi, Masato Nagino
BACKGROUND: The objective of this study was to elucidate whether the inhibition of Toll-like receptor 4 attenuates liver injury ischemia/reperfusion in the cholestatic liver. METHOD: Rats were assigned into sham, bile duct ligation, sham ischemia/reperfusion (ischemia/reperfusion after laparotomy), and bile duct ligation ischemia/reperfusion (ischemia/reperfusion after bile duct ligation) groups. In some rats, TAK-242, an inhibitor of Toll-like receptor 4, was administered 15 minutes before ischemia/reperfusion...
November 27, 2017: Surgery
https://www.readbyqxmd.com/read/29189484/comparison-of-bq123-epoprostenol-and-verapamil-as-vasodilators-during-normothermic-ex-vivo-liver-machine-perfusion
#6
Juan Echeverri, Nicolas Goldaracena, Johan Moritz Kaths, Ivan Linares, Roizar Roizales, Dagmar Kollmann, Matyas Hamar, Peter Urbanellis, Sujani Ganesh, Oyedele A Adeyi, Mahmood Tazari, Markus Selzner, Nazia Selzner
BACKGROUND: The optimal vasodilator to avoid hepatic artery (HA) vasospasm during normothermic ex vivo liver perfusion (NEVLP) is yet to be determined. We compared safety and efficacy of BQ123 (endothelin1 antagonist), Epoprostenol (prostacyclin analogue), and Verapamil (calcium channel antagonist). METHODS: Livers from porcine heart beating donors were perfused for 3 hours and transplanted into recipient pigs. Four groups were compared: Group 1: livers perfused with a dose of 1...
November 20, 2017: Transplantation
https://www.readbyqxmd.com/read/29187695/microrna-21-regulated-activation-of-the-akt-pathway-participates-in-the-protective-effects-of-h2s-against-liver-ischemia-reperfusion-injury
#7
Meng Lu, Xian Jiang, Liquan Tong, Feng Zhang, Lin Ma, Xuesong Dong, Xueying Sun
Maintaining a certain level of hydrogen sulfide (H2S) in ischemia-reperfusion (I/R) is essential for limiting injury to the liver. Exogenous H2S exerts protective effects against this injury, but the mechanisms remain unclear. Liver injury was induced in Wistar rats undergoing hepatic I/R for 30 min, followed by a 3-h reperfusion. Administration of GYY4137 (a slow-releasing H2S donor) significantly attenuated the severity of liver injury and was reflected by reduced inflammatory cytokine production and cell apoptosis, the levels of which were elevated by I/R, while DL-propargylglycine (PAG, an inhibitor of cystathionine γ-lyase [CSE]) aggravated liver injury...
November 30, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29179487/parp-1-promotes-tumor-recurrence-after-warm-ischemic-liver-graft-transplantation-via-neutrophil-recruitment-and-polarization
#8
Shuai Wang, Fa-Ji Yang, Xun Wang, Yuan Zhou, Bo Dai, Bing Han, Hu-Cheng Ma, Yi-Tao Ding, Xiao-Lei Shi
Poly (ADP-ribose) polymerase 1 (PARP-1) is a crucial contributor to exacerbate ischemia and reperfusion (IR) injury and cancer process. However, there is little research into whether PARP-1 affects the hepatocellular carcinoma (HCC) recurrence after liver transplantation. In this study, we investigated the influence of PARP-1 on hepatic neutrophil mobilizing and phenotype shifting which may lead to HCC recurrence after liver transplantation. We found that rats received the grafts with warm ischemic injury had higher risk of HCC recurrence, which was markedly prevented by pharmacological inhibition of PARP-1 after liver transplantation...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29172244/comparative-study-of-amlodipine-versus-cilnidipine-for-the-prevention-of-hepatic-ischemia-reperfusion-injury-in-rat-model
#9
Abdel-Motaal M Fouda, Amany Ragab Youssef, Osama Sharaf Eldin
Ca(2+) signaling plays crucial role in ischemia and reperfusion (I/R) injury. Although blockade of L-type Ca(2+) channels by amlodipine (AML) has been shown to suppress hepatic I/R injury in several animal models, information is still needed regarding the hepatoprotective effects of the dual L/N-type CCB, cilnidipine (CIL). We examined the effect of pretreatment with AML or CIL (100 μg/kg i.p.) 45 min before induction of 60 min of liver ischemia followed by reperfusion, on oxidative stress markers, liver enzymes, serum tumor necrosis factor (TNF)-α, interleukin (IL)-1β, apoptosis markers, and nuclear factor KB (NF-κB) after 6 and 24 h of hepatic reperfusion...
November 24, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/29168258/potential-effect-of-recombinant-thrombomodulin-on-ischemia-reperfusion-liver-injury-in-rats
#10
Koichi Kimura, Tomoharu Yoshizumi, Shoichi Inokuchi, Shinji Itoh, Takashi Motomura, Yohei Mano, Takeo Toshima, Noboru Harada, Norifumi Harimoto, Toru Ikegami, Yuji Soejima, Yoshihiko Maehara
BACKGROUND: Liver ischemia-reperfusion (I/R) injury is a severe complication of liver surgery. However, the responsible molecular mechanism remains unclear. High-mobility group box 1 (HMGB1) is released from the nuclei of cells and behaves as a damage-associated molecular pattern. The aim of this study is to reveal the roles of HMGB1 and the effects of recombinant thrombomodulin in I/R liver injury. METHODS: Rats underwent partial hepatic ischemia followed by reperfusion, and changes in HMGB1 were assessed...
November 23, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29168056/in-vivo-therapeutic-potential-of-inula-racemosa-in-hepatic-ischemia-reperfusion-injury-following-orthotopic-liver-transplantation-in-male-albino-rats
#11
Zhuoyi Wang, Lei Geng, Zhiyun Chen, Bingyi Lin, Mangli Zhang, Shusen Zheng
Hepatic ischemia-reperfusion (I/R) injury mainly occurs following hepatic resection and liver transplantation and cause severe liver damage, organ injuries, and dysfunction. Pro-inflammatory cytokines that promote injury are released when kupffer cell activates after getting induced by I/R. Repercussions of oxidative stress and cardiac function against isoproterenol based myocardial infarction are caused by flavonol glycosides which are found in high concentrations in Inula racemosa (Ir).The root was deemed to have analgesic and anti-inflammatory effects, and no report has been published about the liver-protective activity against hepatic I/R...
November 22, 2017: AMB Express
https://www.readbyqxmd.com/read/29160366/erdosteine-ameliorates-the-harmful-effects-of-ischemia-reperfusion-injury-on-the-liver-of-rats
#12
Aziz Mutlu Barlas, Kemal Kismet, Serap Erel, Serdar Kuru, Turgut Cavusoglu, Mehmet Senes, Zeynep Adiyaman, Pinar Celepli, Sema Hucumenoglu, Recep Pekcici
PURPOSE: To investigate the potential protective effects of erdosteine against the harmful effects of ischemia-reperfusion injury on the liver in an experimental rat model. METHODS: Forty rats were divided into 4 groups. In the sham group, only the hepatic pedicle was mobilized. No other manipulation or treatment was performed. In the other groups, ischemia was achieved by clamping the hepatic pedicle for 60 min. After that, 90 min reperfusion was provided. In the control group, no treatment was given...
October 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29156799/asiatic-acid-protects-against-hepatic-ischemia-reperfusion-injury-by-inactivation-of-kupffer-cells-via-ppar%C3%AE-nlrp3-inflammasome-signaling-pathway
#13
Ying Xu, Jun Yao, Chen Zou, Heng Zhang, Shouliang Zhang, Jun Liu, Gui Ma, Pengcheng Jiang, Wenbo Zhang
Hepatic ischemia/reperfusion (I/R) contributes to major complications in clinical practice affecting perioperative morbidity and mortality. Recent evidence suggests the key role of nucleotide-binding oligomerization domain-like receptor (NLR) family pyrin domain-containing 3 (NLRP3) inflammaosme activation on the pathogenesis of I/R injury. Asiatic acid (AA) is a pentacyclic triterpene derivative presented with versatile activities, including antioxidant, anti-inflammation and hepatoprotective effects. This study was designed to determine whether AA had potential hepatoprotective benefits against hepatic I/R injury, as well as to unveil the underlying mechanisms involved in the putative effects...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29149981/ischemic-preconditioning-produces-comparable-protection-against-hepatic-ischemia-reperfusion-injury-under-isoflurane-and-sevoflurane-anesthesia-in-rats
#14
J S Jeong, D Kim, K Y Kim, S Ryu, S Han, B S Shin, G S Kim, M S Gwak, J S Ko
BACKGROUND: Various volatile anesthetics and ischemic preconditioning (IP) have been demonstrated to exert protective effect against ischemia/reperfusion (I/R) injury in liver. We aimed to determine whether application of IP under isoflurane and sevoflurane anesthesia would confer protection against hepatic I/R injury in rats. METHODS: Thirty-eight rats weighing 270 to 300 grams were randomly divided into 2 groups: isoflurane (1.5%) and sevoflurane (2.5%) anesthesia groups...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29147494/renoprotective-effect-of-crocin-following-liver-ischemia-reperfusion-injury-in-wistar-rats
#15
Seyyed Ali Mard, Ghaidafeh Akbari, Esrafil Mansouri, Mahdi Parsanahad
Objectives: The objectives of the current study were to evaluate the effects of hepatic ischemia/reperfusion (IR) injury on the activity of antioxidant enzymes, biochemical factors, and histopathological changes in rat kidney, and to investigate the effect of crocin on IR-related changes. Materials and Methods: Thirty-two male Wistar rats were randomly allocated into four groups (n=8). They were sham-operated, IR, crocin pre-treatment, and crocin pretreatment+IR groups...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29145424/levosimendan-protects-human-hepatocytes-from-ischemia-reperfusion-injury
#16
Stefanie N Brunner, Nicolai V Bogert, Andreas A Schnitzbauer, Eva Juengel, Anton Moritz, Isabella Werner, Angela Kornberger, Andres Beiras-Fernandez
BACKGROUND: Ischemia-reperfusion injury (IRI) is a major challenge in liver transplantation. The mitochondrial pathway plays a pivotal role in hepatic IRI. Levosimendan, a calcium channel sensitizer, was shown to attenuate apoptosis after IRI in animal livers. The aim of this study was to investigate the effect of levosimendan on apoptosis in human hepatocytes. METHODS: Primary human hepatocytes were either exposed to hypoxia or cultured under normoxic conditions...
2017: PloS One
https://www.readbyqxmd.com/read/29143976/stat3-atg5-signal-axis-inducing-autophagy-to-alleviate-hepatic-ischemia-reperfusion-injury
#17
Yu-Fang Han, Yan-Bing Zhao, Jun Li, Li Li, Yong-Gan Li, Shi-Peng Li, Zhong-Dong Li
In performing our experiment, impaired autophagy increased hepatocellular damage during the reperfusion period. It was demonstrated by the effect of blocking autophagy using bafilomycin A1 or knocking Atg5 gene out reduces the anti-apoptotic effect of Stat3. Here we focus on the role of signal transducer and activator of transcription 3 (Stat3) in regulating autophagy to alleviate hepatic IRI. We found that Stat3 was up-regulated during hepatic IRI and was associated with an activation of the autophagic signaling pathway...
November 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29141573/liver-protective-effects-of-extra-virgin-olive-oil-interaction-between-its-chemical-composition-and-the-cell-signaling-pathways-involved-in-protection
#18
Sandra A Soto-Alarcon, Rodrigo Valenzuela, Alfonso Valenzuela, Luis A Videla
BACKGROUND AND OBJECTIVE: The liver is an organ susceptible to a multitude of injuries that causes liver damage, like steatosis, non-alcoholic steatohepatitis, cirrhosis, hepatocellular carcinoma, and ischemia-reperfusion injury. Extra virgin olive oil (EVOO), presents several protective effects on the liver, reducing hepatic steatosis, hepatocyte ballooning, fibrogenesis, preventing lipid peroxidation, among other effects. Due to its high levels of monounsaturated fatty acids, mainly oleic acid and phenolic compounds, such as hydroxytyrosol and oleuropein, EVOO is able to participate in the activation of different signaling pathways in the hepatocytes involved in the prevention of inflammation, oxidative stress, endoplasmic reticulum stress, mitochondrial dysfunction, and insulin resistance, allowing the prevention or resolution of liver damage...
November 14, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29136322/heme-oxygenase-1-regulates-sirtuin-1-autophagy-pathway-in-liver-transplantation-from-mouse-to-human
#19
Kojiro Nakamura, Shoichi Kageyama, Shi Yue, Jing Huang, Takehiro Fujii, Bibo Ke, Rebecca A Sosa, Elaine F Reed, Nakul Datta, Ali Zarrinpar, Ronald W Busuttil, Jerzy W Kupiec-Weglinski
Liver ischemia-reperfusion injury (IRI) represents a major risk factor of early graft dysfunction and a key obstacle to expanding the donor pool in orthotopic liver transplantation (OLT). Although graft autophagy is essential for resistance against hepatic IRI, its significance in clinical OLT remains unknown. Despite recent data identifying heme oxygenase-1 (HO-1) as a putative autophagy inducer, its role in OLT and interactions with Sirtuin-1 (SIRT1), a key autophagy regulator, have not been studied. We aimed to examine HO-1 mediated autophagy induction in human OLT and in a murine OLT model with extended (20h) cold storage, as well as to analyze the requirement for SIRT1 in autophagy regulation by HO-1...
November 14, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29135887/ischemia-reperfusion-injury-in-aged-livers-the-energy-metabolism-inflammatory-response-and-autophagy
#20
Chunyi Kan, Luisa Ungelenk, Amelie Lupp, Olaf Dirsch, Uta Dahmen
Due to the lack of adequate organs, the number of patients with end-stage liver diseases, acute liver failure or hepatic malignancies waiting for liver transplantation is constantly increasing. Accepting aged liver grafts is one of the strategies expanding the donor pool to ease the discrepancy between the growing demand and the limited supply of donor organs. However, recipients of organs from old donors may show an increased post-transplantation morbidity and mortality due to enhanced ischemia reperfusion injury...
November 11, 2017: Transplantation
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