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Hepatic regeneration

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https://www.readbyqxmd.com/read/28929234/comparison-of-regeneration-of-remnant-liver-after-hemihepatectomy-with-or-without-the-middle-hepatic-vein
#1
Yoshihiro Inoue, Yusuke Suzuki, Masato Ota, Kensuke Fujii, Nao Kawaguchi, Tetsunosuke Shimizu, Mitsuhiro Asakuma, Fumitoshi Hirokawa, Michihiro Hayashi, Kazuhisa Uchiyama
BACKGROUND: There is no consensus about remnant liver regeneration associated with middle hepatic vein (MHV) resecting. METHODS: Seventy-five patients who underwent hemihepatectomy were retrospectively analysed with respect to remnant liver regeneration. The liver remnant volume (LRV) and each sectional volume were postoperatively measured with multidetector computed tomography at day 7 and months 1, 2, 5, and 12 after the operation. RESULTS: In right hemihepatectomy cases, the regeneration rate of LRV in the MHV preservation group was significantly higher than that of the MHV resection group at months 5 and 12...
September 19, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28927749/transcriptome-analysis-uncovers-a-growth-promoting-activity-of-orosomucoid-1-on-hepatocytes
#2
Xian-Yang Qin, Mitsuko Hara, Erik Arner, Yoshikuni Kawaguchi, Ikuyo Inoue, Hideki Tatsukawa, Yutaka Furutani, Keisuke Nagatsuma, Tomokazu Matsuura, Feifei Wei, Jun Kikuchi, Hideko Sone, Carsten Daub, Hideya Kawaji, Timo Lassmann, Masayoshi Itoh, Harukazu Suzuki, Piero Carninci, Yoshihide Hayashizaki, Norihiro Kokudo, Alistair R R Forrest, Soichi Kojima
The acute phase protein orosomucoid-1 (Orm1) is mainly expressed by hepatocytes (HPCs) under stress conditions. However, its specific function is not fully understood. Here, we report a role of Orm1 as an executer of HPC proliferation. Increases in serum levels of Orm1 were observed in patients after surgical resection for liver cancer and in mice undergone partial hepatectomy (PH). Transcriptome study showed that Orm1 became the most abundant in HPCs isolated from regenerating mouse liver tissues after PH...
September 12, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28924922/assessing-the-non-tumorous-liver-implications-for-patient-management-and-surgical-therapy
#3
Pallavi Pandey, Ankur Pandey, Mary Dillhoff, Carl Schmidt, Ihab R Kamel, Timothy M Pawlik
INTRODUCTION: Hepatic resection is performed for various benign and malignant liver tumors. Over the last several decades, there have been improvements in the surgical technique and postoperative care of patients undergoing liver surgery. Despite this, liver failure following an extended hepatic resection remains a critical potential postoperative complication. Patients with underlying parenchymal liver diseases are at particular risk of liver failure due to impaired liver regeneration with an associated mortality risk as high as 60 to 90%...
September 18, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28922713/peppermint-essential-oil-alleviates-hyperglycemia-caused-by-streptozotocin-nicotinamide-induced-type-2-diabetes-in-rats
#4
Suhair A Abdellatief, Rasha R Beheiry, Shefaa A M El-Mandrawy
The prevalence of diabetes mellitus is steadily growing throughout the world. Traditional medicine has an excellent potential in the treatment of diabetes mellitus. The present study was undertaken to evaluate the potential antidiabetic effect of peppermint essential oil (PEO) on streptozotocin (STZ) and nicotinamide induced diabetic rats. Diabetes was induced in rats fasting overnight by the intraperitoneal administration of nicotinamide followed by a single dose of STZ. After 72h, two groups of diabetic rats were treated with different doses of PEO (40 and 80mg/kg BW) respectively and one group was treated with the standard hypoglycemic agent glibenclamide...
September 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28893351/hepatic-ischemia-reperfusion-mechanisms-of-tissue-injury-repair-and-regeneration
#5
Takanori Konishi, Alex Lentsch
Hepatic ischemia reperfusion (I/R) injury is a major complication of liver surgery, including liver resection, liver transplantation, and trauma surgery. Much has been learned about the inflammatory injury response induced by I/R, including the cascade of proinflammatory mediators and recruitment of activated leukocytes. In this review, we discuss the complex network of events that culminate in liver injury after I/R, including cellular, protein, and molecular mechanisms. In addition we address the known endogenous regulatory mediators that function to maintain homeostasis and resolve injury...
September 11, 2017: Gene Expression
https://www.readbyqxmd.com/read/28892424/an-unusual-case-of-portal-hypertension-secondary-to-primary-hypoplasia-of-the-portal-vein
#6
Lauren Harris, Miryam Reems, Sharon Dial
Primary hypoplasia of the portal vein with secondary portal hypertension and acquired portosystemic collateral circulation is infrequently reported in the veterinary literature. Diagnosis of this condition requires documentation of abnormal hepatocellular function, the lack of intrahepatic or extrahepatic macroscopic congenital portosystemic shunts, and liver histopathology demonstrating portal hypoperfusion in the absence of hepatic inflammation or nodular regeneration. Due to a perceived poor prognosis, many patients with this condition are euthanized; however, those that are spared can be medically managed, in some cases for years...
September 11, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28887166/dusp14-protects-against-hepatic-ischemia-reperfusion-injury-via-tak1-suppression
#7
Xiaozhan Wang, Wenzhe Mao, Chun Fang, Song Tian, Xueyong Zhu, Ling Yang, Zan Huang, Hongliang Li
BACKGROUND AND AIMS: Hepatic ischemia-reperfusion (I/R) injury is characterized by severe inflammation and extensive cell death. Multiple signaling pathways, including NF-κB and MAPK/Jnk, play important roles in this process. Identifying the unknown critical regulators of these signaling pathways may provide potential targets for therapeutic application. Dual specific phosphatase 14 (DUSP14) acts as a negative regulator of NF-κB signaling. However, the function of Dusp14 in hepatic I/R injury remains unknown...
September 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28880403/natural-igm-initiates-an-inflammatory-response-important-for-both-hepatic-ischemia-reperfusion-injury-and-regeneration
#8
Keely Marshall, Junfei Jin, Carl Atkinson, Ali Alawieh, Fei Qiao, Biao Lei, Kenneth D Chavin, Songqing He, Stephen Tomlinson
RATIONALE: Complement plays a role in both hepatic ischemia reperfusion (IR) injury (IRI) and liver regeneration, but it is not clear how complement is activated in either process. We investigated the role of self-reactive IgM antibodies in activating complement after hepatic IR and liver resection. MAIN RESULTS: Natural IgM antibodies that recognize danger associated molecular patterns (neoepitopes) activate complement following both hepatic IR and liver resection...
September 7, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28878669/picrorhiza-kurroa-enhances-%C3%AE-cell-mass-proliferation-and-insulin-secretion-in-streptozotocin-evoked-%C3%AE-cell-damage-in-rats
#9
Shiv Kumar, Vikram Patial, Sourabh Soni, Supriya Sharma, Kunal Pratap, Dinesh Kumar, Yogendra Padwad
Autoimmune destruction of insulin producing pancreatic β-cells leads to insulin insufficiency and hyperglycemia in type 1 diabetes mellitus. Regeneration of β-cells is one of the proposed treatment for type 1 diabetes and insulin insufficiency. Picrorhiza kurroa is a medicinal herb and is traditionally being used for the treatment of various diseases. Previous studies reported the hypoglycemic potential of P. kurroa. However, its potential role in β-cell induction in insulin secretion have not been fully investigated...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28877220/attenuated-lipotoxicity-and-apoptosis-is-linked-to-exogenous-and-endogenous-augmenter-of-liver-regeneration-by-different-pathways
#10
Thomas S Weiss, Madeleine Lupke, Sara Ibrahim, Christa Buechler, Julia Lorenz, Petra Ruemmele, Ute Hofmann, Michael Melter, Rania Dayoub
Nonalcoholic fatty liver disease (NAFLD) covers a spectrum from simple steatosis to nonalcoholic steatohepatitis (NASH) and cirrhosis. Free fatty acids (FFA) induce steatosis and lipo-toxicity and correlate with severity of NAFLD. In this study we aimed to investigate the role of exogenous and endogenous ALR (augmenter of liver regeneration) for FFA induced ER (endoplasmatic reticulum) -stress and lipoapoptosis. Primary human hepatocytes or hepatoma cells either treated with recombinant human ALR (rhALR, 15kDa) or expressing short form ALR (sfALR, 15kDa) were incubated with palmitic acid (PA) and analyzed for lipo-toxicity, -apoptosis, activation of ER-stress response pathways, triacylglycerides (TAG), mRNA and protein expression of lipid metabolizing genes...
2017: PloS One
https://www.readbyqxmd.com/read/28858213/recreational-exposure-during-algal-bloom-in-carrasco-beach-uruguay-a-liver-failure-case-report
#11
Flavia Vidal, Daniela Sedan, Daniel D'Agostino, María Lorena Cavalieri, Eduardo Mullen, María Macarena Parot Varela, Cintia Flores, Josep Caixach, Dario Andrinolo
In January 2015, a 20-month-old child and her family took part in recreational activities at Carrasco and Malvín beaches (Montevideo, Uruguay). An intense harmful algae bloom (HAB) was developing along the coast at that time. A few hours after the last recreational exposure episode, the family suffered gastrointestinal symptoms which were self-limited except in the child's case, who was admitted to hospital in Uruguay with diarrhea, vomiting, fatigue, and jaundice. The patient had increased serum levels of liver enzymes and bilirubin and five days later presented acute liver failure...
August 31, 2017: Toxins
https://www.readbyqxmd.com/read/28840583/therapeutic-implications-of-granulocyte-colony-stimulating-factor-in-patients-with-acute-on-chronic-liver-failure-increased-survival-and-containment-of-liver-damage
#12
Biplob Kumar Saha, Mamun Al Mahtab, Sheikh Mohammad Fazle Akbar, Sheikh Mohammad Noor-E-Alam, Ayub Al Mamun, Sharker Mohammad Shahadat Hossain, Mohammad Ashraful Alam, Ahmed Lutful Moben, Faiz Ahmad Khondaker, Forhadul Islam Chowdhury, Ruksana Raihan, Salimur Rahman, Ashok Kumar Choudhury
BACKGROUND AND PURPOSE: Mobilization of bone marrow-derived stem cells by granulocyte colony stimulating factor (G-CSF) supports hepatic regeneration and may augment clinical improvement in patients with acute-on-chronic liver failure (ACLF). The aim of this study is to assess the impact of G-CSF on complications and transplant-free survival in patients with ACLF. METHODS: Thirty-two patients with ACLF defined by Asian Pacific Association for the Study of the Liver (APASL) criteria were openly randomized to control (group A) or intervention (group B) receiving G-CSF (5 μg/kg/day, for 6 consecutive days) in addition to standard medical therapy with antiviral drugs...
August 24, 2017: Hepatology International
https://www.readbyqxmd.com/read/28837779/portal-vein-ligation-alters-coding-and-non-coding-gene-expression-in-rat-livers
#13
Bin Li, Yan Zhu, Lei Xie, Shuyang Hu, Shupeng Liu, Xiaoqing Jiang
Portal vein occlusion increases the resectability of initially unresectable HCC by inducing the hypertrophy of non-occluded liver lobes. However, the mechanisms of how portal vein occlusion induces hepatic hypertrophy remains unclear. cDNA microarray was used to identify gene expression signatures of ligated and non-ligated lobes at different time after PVL. Bioinformatics analysis found that ligated liver lobes (LLL) and non-ligated liver lobes (NLLL) displayed different gene expression profiles. And expression of both coding and non-coding RNA were also different at the different time in LLL or NLLL after PVL...
August 24, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28832548/nypa-fruticans-wurmb-vinegar-s-aqueous-extract-stimulates-insulin-secretion-and-exerts-hepatoprotective-effect-on-stz-induced-diabetic-rats
#14
Nor Adlin Yusoff, Vuanghao Lim, Bassel Al-Hindi, Khairul Niza Abdul Razak, Tri Widyawati, Dwi Rita Anggraini, Mariam Ahmad, Mohd Zaini Asmawi
BACKGROUND: An aqueous extract (AE) of vinegar made from Nypa fruticans Wurmb. can improve postprandial glucose levels in normoglycaemic rats. The aim of this study was to evaluate its antihyperglycaemic activity further using in vivo and in vitro approaches. METHODS: AE was administered to streptozotocin (STZ)-induced diabetic rats twice daily at three doses (1000, 500, and 250 mg/kg b.w.) for 12 days p.o. Several biochemical analyses and a histological study of the pancreas and liver were performed, accompanied by a cell culture assay...
August 23, 2017: Nutrients
https://www.readbyqxmd.com/read/28825695/augmenter-of-liver-regeneration-potentiates-doxorubicin-anticancer-efficacy-by-reducing-the-expression-of-abcb1-and-abcg2-in-hepatocellular-carcinoma
#15
Yuan-Yuan Guo, Yuan Wu, Xiao-Wei Jia, Wei An
Hepatocellular carcinoma (HCC) is highly chemoresistant and therefore challenges both physicians and patients. Augmenter of liver regeneration (ALR), previously also known as 'hepatic stimulator substance', is reported to inhibit the epithelial-mesenchymal transition (EMT) in HCC, one of the frequent events that occur in cancer metastasis, suggesting that ALR is involved in HCC. In this study, we report for the first time that the transfection of ALR enhances the antitumor effect of chemotherapy with doxorubicin, a typical anticancer drug, on HCC in vitro and in vivo...
August 21, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28807594/thyroid-hormone-receptor-beta-agonist-gc-1-inhibits-met-%C3%AE-catenin-driven-hepatocellular-cancer
#16
Elisabetta Puliga, Qian Min, Junyan Tao, Rong Zhang, Tirthadipa Pradhan-Sundd, Minakshi Poddar, Sucha Singh, Amedeo Columbano, Jinming Yu, Satdarshan P Monga
The thyromimetic agent GC-1 induces hepatocyte proliferation via Wnt/β-catenin signaling and may promoting regeneration in both acute and chronic liver insufficiencies. However, β-catenin activation particularly due to mutations in CTNNB1 is seen in a subset of hepatocellular carcinomas (HCC). Thus, it will be critical to address any effect of GC-1 on HCC growth and development, before its use can be advocated to stimulate regeneration in chronic liver diseases. In the current study, we first examine the effect of GC-1 on β-catenin-TCF4 activity in HCC cell lines harboring wild-type or mutated-CTNNB1...
August 11, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28805685/re-adaption-on-earth-after-spaceflights-affects-the-mouse-liver-proteome
#17
Viktoria Anselm, Svetlana Novikova, Victor Zgoda
Harsh environmental conditions including microgravity and radiation during prolonged spaceflights are known to alter hepatic metabolism. Our studies have focused on the analysis of possible changes in metabolic pathways in the livers of mice from spaceflight project "Bion-M 1". Mice experienced 30 days of spaceflight with and without an additional re-adaption period of seven days compared to control mice on Earth. To investigate mice livers we have performed proteomic profiling utilizing shotgun mass spectrometry followed by label-free quantification...
August 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28795384/contribution-of-hepatobiliary-scintigraphy-in-assessing-alpps-most-suited-timing
#18
Stéphanie Truant, Clio Baillet, Anne Claire Deshorgue, Mehdi El Amrani, Damien Huglo, François-René Pruvot
To reduce post-hepatectomy liver failure (PHLF), associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has been recently developed for patients with a limited future remnant liver (FRL). Nevertheless, high morbi-mortality rates have been reported . The current study aimed to analyze the kinetics of FRL function in patients who were offered ALPPS. Serial SPECT (99 m)Tc-mebrofenin hepatobiliary scintigraphy (HBS) was performed in all patients before and after surgery as well as at inter-stage to quantitatively assess hepatic function [total liver (TL) and FRL]...
August 9, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28777941/cholangiocytes-no-longer-cinderellas-to-the-hepatic-regenerative-response
#19
Malcolm R Alison
Biliary ductal cells proliferate from the portal areas of chronically damaged livers, but their significance to regeneration has been controversial. A recent article in Nature by Raven et al. (2017) now shows that blocking hepatocyte replication is essential for the hepatic differentiation of ductular cells after liver damage.
August 3, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28768152/mechanosensing-in-liver-regeneration
#20
REVIEW
Ziwei Song, Kapish Gupta, Inn Chuan Ng, Jiangwa Xing, Yi An Yang, Hanry Yu
Liver is highly regenerative as it can restore its function and size even after 70% partial hepatectomy. During liver regeneration, the mechanical and chemical environment of liver is altered with accumulation of various growth factors and remodeling of extracellular environment. Cells can sense the changes in their cellular environment through various chemo and mechanosensors present on their surfaces. These changes are then transduced by initiation of multiple signaling pathways. Traditional view of liver regeneration describes the process as a cascade of chemical signaling pathways...
July 30, 2017: Seminars in Cell & Developmental Biology
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