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Liver regeneration

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https://www.readbyqxmd.com/read/28743167/preoperative-bevacizumab-and-volumetric-recovery-after-resection-of-colorectal-liver-metastases
#1
Georgios Antonios Margonis, Stefan Buettner, Nikolaos Andreatos, Kazunari Sasaki, Manijeh Zargham Pour, Ammar Deshwar, Jane Wang, Mounes Aliyari Ghasebeh, Christos Damaskos, Neda Rezaee, Timothy M Pawlik, Christopher L Wolfgang, Ihab R Kamel, Matthew J Weiss
BACKGROUND AND OBJECTIVES: While preoperative treatment is frequently administered to CRLM patients, the impact of chemotherapy, with or without bevacizumab, on liver regeneration remains controversial. METHODS: The early and late regeneration indexes were defined as the relative increase in liver volume (RLV) within 2 and 9 months from surgery. Regeneration rates of the preoperative treatment groups were compared. RESULTS: Preoperative chemotherapy details and volumetric data were available for 185 patients; 78 (42...
July 25, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28732555/hepatobiliary-scintigraphy-to-evaluate-liver-function-in-associating-liver-partition-and-portal-vein-ligation-for-staged-hepatectomy-liver-volume-overestimates-liver-function
#2
Pim B Olthof, Federico Tomassini, Pablo E Huespe, Stephanie Truant, François-René Pruvot, Roberto I Troisi, Carlos Castro, Erik Schadde, Rimma Axelsson, Ernesto Sparrelid, Roelof J Bennink, Rene Adam, Thomas M van Gulik, Eduardo de Santibanes
BACKGROUND: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) induces a rapid and extensive increase in liver volume. The functional quality of this hypertrophic response has been called into question because ALPPS is associated with a substantial incidence of liver failure and high perioperative mortality. This multicenter study aimed to evaluate functional liver regeneration in contrast to volumetric liver regeneration in ALPPS, using technetium-99m hepatobiliary scintigraphy and computed tomography volumetry, respectively...
July 18, 2017: Surgery
https://www.readbyqxmd.com/read/28730824/glucagon-like-peptide-1-analogues-exenatide-and-liraglutide-exert-inhibitory-effect-on-the-early-phase-of-liver-regeneration-after-partial-hepatectomy-in-rats
#3
J Fontana, O Kučera, V Mezera, M Anděl, Z Červinková
Glucagon-like peptide-1 (GLP-1) is an incretin known for proliferative and antiapoptotic effects on various tissues. Exenatide and Liraglutide are GLP-1 analogues used in clinical practice as antidiabetic drugs. Since GLP-1 and its analogues exert significant effect on liver metabolism and since changes in intermediary metabolism play an important role in the process of liver regeneration, we decided to determine the effect of Exenatide and Liraglutide on the early phase of liver regeneration and selected metabolic parameters in a model of 2/3 partial hepatectomy (PHx) in rats...
July 18, 2017: Physiological Research
https://www.readbyqxmd.com/read/28718936/heparan-sulfate-promotes-recovery-from-acute-liver-injury-inhibition-of-progressive-cell-death-or-enhanced-regeneration
#4
EDITORIAL
Udayan Apte, Neil Kaplowitz
No abstract text is available yet for this article.
July 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28717326/honey-can-repairing-damage-of-liver-tissue-due-to-protein-energy-malnutrition-through-induction-of-endogenous-stem-cells
#5
R Heru Prasetyo, Eka Pramyrtha Hestianah
AIM: This study was to evaluate effect of honey in repairing damage of liver tissue due to energy protein malnutrition and in mobilization of endogenous stem cells. MATERIALS AND METHODS: Male mice model of degenerative liver was obtained through food fasting but still have drinking water for 5 days. It caused energy protein malnutrition and damage of liver tissue. The administration of 50% (v/v) honey was performed for 10 consecutive days, while the positive control group was fasted and not given honey and the negative control not fasted and without honey...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28716380/erratum-to-human-liver-regeneration-in-advanced-cirrhosis-is-organized-by-the-portal-tree-j-hepatol-66-2017-778-786
#6
Katalin Dezső, András Rókusz, Edina Bugyik, Armanda Szücs, András Szuák, Bence Dorogi, Mátyás Kiss, Ágnes Nemeskéri, Péter Nagy, Sándor Paku
No abstract text is available yet for this article.
August 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28714135/yap-suppresses-gluconeogenic-gene-expression-via-pgc1%C3%AE
#7
Yue Hu, Dong-Ju Shin, Hui Pan, Zhiqiang Lin, Jonathan M Dreyfuss, Fernando D Camargo, Ji Miao, Sudha B Biddinger
Cell growth and proliferation are tightly coupled to metabolism, and dissecting the signaling molecules which link these processes is an important step towards understanding development, regeneration and cancer. The transcriptional regulator Yes-associated protein 1 (YAP) is a key regulator of liver size, development and function. We now show that YAP can also suppress gluconeogenic gene expression. Yap deletion in primary hepatocytes potentiates the gluconeogenic gene response to glucagon and dexamethasone, whereas constitutively active YAP suppresses it...
July 17, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28709961/bile-acids-fgf15-19-and-liver-regeneration-from-mechanisms-to-clinical-applications
#8
REVIEW
Gloria Alvarez-Sola, Iker Uriarte, Maria U Latasa, Maddalen Jimenez, Marina Barcena-Varela, Eva Santamaría, Raquel Urtasun, Carlos Rodriguez-Ortigosa, Jesús Prieto, Pedro Berraondo, Maite G Fernandez-Barrena, Carmen Berasain, Matías A Avila
The liver has an extraordinary regenerative capacity rapidly triggered upon injury or resection. This response is intrinsically adjusted in its initiation and termination, a property termed the "hepatostat". Several molecules have been involved in liver regeneration, and among them bile acids may play a central role. Intrahepatic levels of bile acids rapidly increase after resection. Through the activation of farnesoid X receptor (FXR), bile acids regulate their hepatic metabolism and also promote hepatocellular proliferation...
July 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28708585/the-neglected-avian-hepatotropic-virus-induces-acute-and-chronic-hepatitis-in-ducks-an-alternative-model-for-hepatology
#9
Xumin Ou, Sai Mao, Jingyu Cao, Yunchao Ma, Guangpeng Ma, Anchun Cheng, Mingshu Wang, Dekang Zhu, Shun Chen, Renyong Jia, Mafeng Liu, Kunfeng Sun, Qiao Yang, Ying Wu, Xiaoyue Chen
Duck Hepatitis A Virus (DHAV) belongs to the Avihepatovirus, which is also classified into Picornaviridae with Hepatovirus, Hepatitis A Virus (HAV). In humans, the pathogenesis of HAV is not well understood because of limited work with animal models. Here, we investigated the progress of duck viral hepatitis caused by DHAV and their potential for dissecting the pathogenesis of HAV. During the course of infection, the duck model had undergone hepatocellular lesions (vacuolation, acidophilic degeneration and steatosis), lymphocytes recruitment (neutrophil granulocytes, heterophilic granulocytes and T cells or plasm cells) and repair (activation of hepatic stellate cells, fibrosis and regeneration)...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28706971/a-donor-age-based-and-graft-volume-based-analysis-for-living-donor-liver-transplantation-in-elderly-recipients
#10
Hajime Imamura, Masaaki Hidaka, Akihiko Soyama, Amane Kitasato, Tomohiko Adachi, Shinichiro Ono, Koji Natsuda, Takanobu Hara, Tota Kugiyama, Zhassulan Baimakhanov, Satomi Okada, Fumihiko Fujita, Kengo Kanetaka, Mitsuhisa Takatsuki, Tamotsu Kuroki, Susumu Eguchi
BACKGROUND: Given the expected increase in the number of elderly recipients, details regarding how clinical factors influence the outcome in living donor liver transplantation (LDLT) for the elderly remain unclear. We examined the survival outcomes according to the results of donor age-based and graft volume-based analyses and assessed the impact of prognostic factors on the survival after LDLT for elderly recipients. METHODS: The 198 adult recipients were classified into 2 groups: an elderly group (n = 70, E group; ≥ 60 years of age) and a younger group (n = 128, Y group; <60 years of age)...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28706885/omega-3-fatty-acids-inhibit-oxidative-stress-in-a-rat-model-of-liver-regeneration
#11
Ozgur Firat, Ozer Makay, Levent Yeniay, Goksel Gokce, Cigdem Yenisey, Ahmet Coker
PURPOSE: Lipid peroxidation and consequent reactive oxygen species in the setting of oxidative stress have crucial roles in liver regeneration, which may adversely affect the regeneration itself and lead to liver failure. The aim of the current study is to investigate whether omega-3 fatty acid supplementation inhibits oxidative stress in an experimental model of liver regeneration. METHODS: Forty rats were allocated to four groups. Rats in group A received a sham operation...
July 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/28704337/alleviation-of-ischemia-reperfusion-injury-in-liver-steatosis-by-augmenter-of-liver-regeneration-alr-is-attributed-to-antioxidation-and-preservation-of-mitochondria
#12
Junhua Weng, Wen Li, Xiaowei Jia, Wei An
BACKGROUND: Fatty liver is 1 of the major impediments to liver surgery and liver transplantation because steatotic hepatocytes are more susceptible to ischemia-reperfusion injury (IRI). In this study, the effects of augmenter of liver regeneration (ALR) on hepatic IRI in steatotic mice were investigated. METHODS: In vivo, liver steatosis of mice was induced by feeding a methionine-choline deficient diet for 2 weeks. Three days prior to hepatic partial warm IRI, mice were transfected with the ALR-containing adenovirus...
July 13, 2017: Transplantation
https://www.readbyqxmd.com/read/28700576/cholangiocytes-act-as-facultative-liver-stem-cells-during-impaired-hepatocyte-regeneration
#13
Alexander Raven, Wei-Yu Lu, Tak Yung Man, Sofia Ferreira-Gonzalez, Eoghan O'Duibhir, Benjamin J Dwyer, John P Thomson, Richard R Meehan, Roman Bogorad, Victor Koteliansky, Yuri Kotelevtsev, Charles Ffrench-Constant, Luke Boulter, Stuart J Forbes
After liver injury, regeneration occurs through self-replication of hepatocytes. In severe liver injury, hepatocyte proliferation is impaired-a feature of human chronic liver disease. It is unclear whether other liver cell types can regenerate hepatocytes. Here we use two independent systems to impair hepatocyte proliferation during liver injury to evaluate the contribution of non-hepatocytes to parenchymal regeneration. First, loss of β1-integrin in hepatocytes with liver injury triggered a ductular reaction of cholangiocyte origin, with approximately 25% of hepatocytes being derived from a non-hepatocyte origin...
July 20, 2017: Nature
https://www.readbyqxmd.com/read/28698986/novelties-in-the-pathophysiology-and-management-of-portal-hypertension-new-treatments-on-the-horizon
#14
REVIEW
Seong Hee Kang, Moon Young Kim, Soon Koo Baik
Portal hypertension (PH) is responsible for the most severe complications of cirrhosis and leading cause of death and liver transplantation. The standard pharmacological treatment available for PH currently consists of the use of a non-selective beta-blocker. However, a significant proportion of patients do not respond to pharmacological treatment. This has led to the development of identifiable targets for the discovery of new horizons in PH treatment. Recently, there has been significant progress in understanding the mechanism behind PH, which is a product of increased hepatic vascular resistance including structural changes and functional change due to endothelial dysfunction...
July 11, 2017: Hepatology International
https://www.readbyqxmd.com/read/28694659/induction-of-chronic-cholestasis-without-liver-cirrhosis-creation-of-an-animal-model
#15
Felix Dondorf, René Fahrner, Michael Ardelt, Eleonora Patsenker, Felix Stickel, Uta Dahmen, Utz Settmacher, Falk Rauchfuß
AIM: To analyze time intervals of inflammation and regeneration in a cholestatic rat liver model. METHODS: In 36 Lewis rats, divided into six groups of 6 animals (postoperative observation periods: 1, 2, 3, 4, 6, 8 wk), the main bile duct was ligated with two ligatures and observed for the periods mentioned above. For laboratory evaluation, cholestasis parameters (bilirubin, γ-GT), liver cell parameters (ASAT, ALAT) and liver synthesis parameters (quick, albumin) were determined...
June 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28694564/hmgb1-and-extracellular-histones-significantly-contribute-to-systemic-inflammation-and-multiple-organ-failure-in-acute-liver-failure
#16
REVIEW
Runkuan Yang, Xiaoping Zou, Jyrki Tenhunen, Tor Inge Tønnessen
Acute liver failure (ALF) is the culmination of severe liver cell injury from a variety of causes. ALF occurs when the extent of hepatocyte death exceeds the hepatic regenerative capacity. ALF has a high mortality that is associated with multiple organ failure (MOF) and sepsis; however, the underlying mechanisms are still not clear. Emerging evidence shows that ALF patients/animals have high concentrations of circulating HMGB1, which can contribute to multiple organ injuries and mediate gut bacterial translocation (BT)...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28684664/mesenchymal-stem-stromal-cell-derived-extracellular-vesicles-and-their-potential-as-novel-immunomodulatory-therapeutic-agents
#17
REVIEW
Verena Börger, Michel Bremer, Rita Ferrer-Tur, Lena Gockeln, Oumaima Stambouli, Amina Becic, Bernd Giebel
Extracellular vesicles (EVs), such as exosomes and microvesicles, have been identified as mediators of a newly-discovered intercellular communication system. They are essential signaling mediators in various physiological and pathophysiological processes. Depending on their origin, they fulfill different functions. EVs of mesenchymal stem/stromal cells (MSCs) have been found to promote comparable therapeutic activities as MSCs themselves. In a variety of in vivo models, it has been observed that they suppress pro-inflammatory processes and reduce oxidative stress and fibrosis...
July 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28682508/bone-marrow-endothelial-progenitor-cells-activate-hepatic-stellate-cells-and-aggravate-carbon-tetrachloride-induced-liver-fibrosis-in-mice-via-paracrine-factors
#18
Manali Garg, Savneet Kaur, Arpita Banik, Vikash Kumar, Archana Rastogi, Shiv K Sarin, Asok Mukhopadhyay, Nirupma Trehanpati
OBJECTIVES: Bone marrow derived endothelial progenitor cells (BM-EPCs) are increased in chronic liver disease (CLD). Their role in hepatic fibrosis and regeneration remains an area of intense studies. We investigated the migration and secretory functions of BM-EPCs in fibrotic mice liver. MATERIALS AND METHODS: Bone marrow cells from C57BL6-GFP mice were transplanted into the femur of irradiated C57BL6 mice, followed by CCl4 doses for 8 weeks, to develop hepatic fibrosis (n = 36)...
July 6, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28680378/effects-of-cellular-11%C3%AE-hydroxysteroid-dehydrogenase-1-on-lps-induced-inflammatory-responses-in-synovial-cell-line-sw982
#19
Young Sik Cho, Ki Nam Kim, Jung Hyun Shim
11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) catalyzes the conversion of inactive cortisone into active cortisol, which has pleiotropic roles in various biological conditions, such as immunological and metabolic homeostasis. Cortisol is mainly produced in the adrenal gland, but can be locally regenerated in the liver, fat, and muscle. Its diverse actions are primarily mediated by binding to the glucocorticoid receptor. SW982, a human synovial cell line, expresses 11β-HSD type 1, but not type 2, that catalyzes the conversion of cortisone to cortisol...
June 2017: Immune Network
https://www.readbyqxmd.com/read/28680292/effect-of-non-alcoholic-liver-disease-on-recurrence-rate-and-liver-regeneration-after-liver-resection-for-colorectal-liver-metastases
#20
N W Molla, M M Hassanain, Z Fadel, L M Boucher, A Madkhali, R M Altahan, E A Alrijraji, E B Simoneau, H Alamri, A Salman, Z Gao, P P Metrakos
BACKGROUND: Resection of metastases is the only potential cure for patients with liver metastasis from colorectal cancer (crc-lm). But despite an improved overall 5-year survival, the recurrence rate is still as high as 60%. Non-alcoholic fatty liver disease (nafld) can decrease the liver's capacity to regenerate after resection and might also affect cancer recurrence, potentially by elevating transforming growth factor β, levels of specific metalloproteinases, and oxidative stress. The objective of the present work was to determine the effect of the histologic features of nafld on cancer recurrence and liver regeneration...
June 2017: Current Oncology
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