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Hepatic regeneration

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https://www.readbyqxmd.com/read/29338386/estrogen-estrogen-receptor-%C3%AE-signaling-facilitates-bilirubin-metabolism-in-regenerating-liver-through-regulating-cytochrome-p450-2a6-expression
#1
Ta-Lun Kao, Yao-Li Chen, Yu-Ping Kuan, Wei-Chun Chang, Yu-Chen Ho, Shuyuan Yeh, Long-Bin Jeng, Wen-Lung Ma
BACKGROUND: After living donor liver transplantation (LDLT), rising serum bilirubin levels commonly indicate insufficient numbers of hepatocytes are available to metabolize bilirubin into biliverdin. Recovery of bilirubin levels is an important marker of hepatocyte repopulation after LDLT. Cytochrome P450 (CYP) 2A6 in humans (or cyp2a4 in rodents) can function as "bilirubin oxidase." Functional hepatocytes contain abundant CYP2A6, which is considered a marker for hepatocyte function recovery...
November 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29336497/effects-of-treatment-with-maraviroc-a-ccr5-inhibitor-on-a-human-hepatic-stellate-cell-line
#2
N Coppola, A Perna, A Lucariello, S Martini, M Macera, M A Carleo, G Guerra, V Esposito, A De Luca
After an acute liver damage, tissue regeneration repairs lesions with degradation of deposed fibrotic material, while mechanisms of tissue restoration are persistently activated following several repeated injuries, inducing deposition of extracellular matrix. (ECM). Factors responsible for ECM remodeling have been identified in a pathway involving a family of zinc-dependent enzyme matrix metalloproteinases (MMPs), together with tissue inhibitor of metalloproteinases (TIMPs). Recent experimental models suggested a role of CCR5 receptor in the genesis of liver fibrosis...
January 16, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29322010/beneficiary-effect-of-commiphora-mukul-ethanolic-extract-against-high-fructose-diet-induced-abnormalities-in-carbohydrate-and-lipid-metabolism-in-wistar-rats
#3
Ramesh Bellamkonda, Rasineni Karuna, Bongu Sasi Bhusana Rao, Ketham Haritha, Bengeppagari Manjunatha, Somavarapu Silpa, Desireddy Saralakumari
The present study was proposed to elucidate the effect of Commiphora mukul gum resin elthanolic extract treatment on alterations in carbohydrate and lipid metabolisms in rats fed with high-fructose diet. Male Wistar rats were divided into four groups: two of these groups (group C and C+CM) were fed with standard pellet diet and the other two groups (group F and F+CM) were fed with high fructose (66 %) diet. C. mukul suspension in 5% Tween-80 in distilled water (200 mg/kg body weight/day) was administered orally to group C+CM and group F+CM...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29312979/bone-morphogenetic-protein-9-activin-like-kinase-1-axis-a-new-target-for-hepatic-regeneration-and-fibrosis-treatment-in-liver-injury
#4
EDITORIAL
Montserrat Marí, Albert Morales
No abstract text is available yet for this article.
December 2017: Hepatobiliary Surgery and Nutrition
https://www.readbyqxmd.com/read/29312604/serum-amyloid-a-induces-m2b-like-macrophage-polarization-during-liver-inflammation
#5
Yibin Wang, Haijun Huang, Renhua Sun, Bingyu Chen, Fang Han, Qian Li, Yin Ni, Xi Li, Jingquan Liu, Xiaozhou Mou, Yuexing Tu
Hepatitis causes hepatic cell injury, regeneration and different levels of fibrogenesis, and severe liver fibrogenesis progresses into cirrhosis with liver dysfunction. Serum amyloid A (SAA) is an acute phase protein that is predominantly secreted by hepatocytes during early injury or infection. Nevertheless, the relationship of SAA and development of cirrhosis as well as the underlying molecular mechanisms is largely unknown. Here, we found that macrophages are the major SAA-binding cells in the injured liver...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29303509/hippo-pathway-coactivators-yap-and-taz-are-required-to-coordinate-mammalian-liver-regeneration
#6
Li Lu, Milton J Finegold, Randy L Johnson
The mammalian liver has a remarkable capacity for repair following injury. Removal of up to two-third of liver mass results in a series of events that include extracellular matrix remodeling, coordinated hepatic cell cycle re-entry, restoration of liver mass and tissue remodeling to return the damaged liver to its normal state. Although there has been considerable advancement of our knowledge concerning the regenerative capacity of the mammalian liver, many outstanding questions remaining, such as: how does the regenerating liver stop proliferating when appropriate mass is restored and how do these mechanisms relate to normal regulation of organ size during development? Hippo pathway has been proposed to be central in mediating both events: organ size control during development and following regeneration...
January 5, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29290803/glutathione-peroxidase-3-delivered-by-hipsc-mscs-ameliorated-hepatic-ir-injury-via-inhibition-of-hepatic-senescence
#7
Xiang Qi, Kevin Tak-Pan Ng, Qizhou Lian, Chang Xian Li, Wei Geng, Chang Chun Ling, Wai Ho Yeung, Yuen Yuen Ma, Xiao Bing Liu, Hui Liu, Jiang Liu, Xin Xiang Yang, Chung Mau Lo, Kwan Man
Background and Aims: Down-regulation of GPx3 accelerated hepatic senescence, which further caused overwhelming inflammation and severe liver graft injury. MSCs derived from human induced pluripotent stem cells (hiPSC-MSCs) have been developed as more efficient delivery vehicle with the property of injury tropism. Here, we aimed to explore the suppressive role of GPx3 in hepatic IR injury using novel delivery system of hiPSC-MSCs. Methods: The mice IR injury model with partial hepatectomy was established. The engineered hiPSC-MSCs delivering GPx3 was constructed...
2018: Theranostics
https://www.readbyqxmd.com/read/29288124/adult-hepatocytes-direct-liver-organogenesis-through-non-parenchymal-cell-recruitment-in-the-kidney
#8
Rie Utoh, Junji Komori, Hiroyuki Kuge, Kohei Tatsumi, Masumi Yamada, Shinji Hirohashi, Masahiro Tsutsumi, Toshihiro Amanuma, Akira Yoshioka, Yoshiyuki Nakajima, Kenjiro Wake, Teruo Okano, Eric Lagasse, Kazuo Ohashi
BACKGROUND & AIMS: Since the first account of the myth of Prometheus, the amazing regenerative capacity of the liver has fascinated researchers due to its enormous medical potential. Liver regeneration is promoted by multiple types of liver cells, including hepatocytes and liver non-parenchymal cells (NPCs), through the complex intercellular signaling. However, the liver organogenetic mechanism, especially the role of adult hepatocytes at ectopic sites, remains unknown. In this study, we demonstrate that hepatocytes alone spurred liver organogenesis to form an organ-sized complex 3D liver that exhibited native liver architecture and functions in the kidneys of mice...
December 26, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29279592/rapidly-increasing-liver-progenitor-cell-numbers-in-human-regenerating-liver-after-portal-vein-ligation-and-liver-partition
#9
K H Lin, H T Hsu, T H Teng, P Y Lin, C J Ko, C E Hsieh, Y L Chen
BACKGROUND: Liver regeneration is dependent on the proliferation of hepatocytes. Hepatic progenitor cells are intra-hepatic precursor cells capable of differentiating into hepatocytes or biliary cells. Although liver progenitor cell proliferation during the regenerative process has been observed in animal models of severe liver injury, it has never been observed in vivo in humans because it is unethical to take multiple biopsy specimens for the purpose of studying the proliferation of liver progenitor cells and the roles they play in liver regeneration...
December 2017: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/29276644/hepatic-progenitor-cell-activation-in-liver-repair
#10
Adam Bria, Jorgessen Marda, Junmei Zhou, Xiaowei Sun, Qi Cao, Bryon E Petersen, Liya Pi
The liver possesses an extraordinary ability to regenerate after injury. Hepatocyte-driven liver regeneration is the default pathway in response to mild-to-moderate acute liver damage. When replication of mature hepatocytes is blocked, facultative hepatic progenitor cells (HPCs), also referred to as oval cells (OCs) in rodents, are activated. HPC/OCs have the ability to proliferate clonogenically and differentiate into several lineages including hepatocytes and bile ductal epithelia. This is a conserved liver injury response that has been studied in many species ranging from mammals (rat, mouse, and human) to fish...
September 2017: Liver Research
https://www.readbyqxmd.com/read/29262330/hepatic-leukemia-factor-maintains-quiescence-of-hematopoietic-stem-cells-and-protects-the-stem-cell-pool-during-regeneration
#11
Karolina Komorowska, Alexander Doyle, Martin Wahlestedt, Agatheeswaran Subramaniam, Shubhranshu Debnath, Jun Chen, Shamit Soneji, Ben Van Handel, Hanna K A Mikkola, Kenichi Miharada, David Bryder, Jonas Larsson, Mattias Magnusson
The transcription factor hepatic leukemia factor (HLF) is strongly expressed in hematopoietic stem cells (HSCs) and is thought to influence both HSC self-renewal and leukemogenesis. However, the physiological role of HLF in hematopoiesis and HSC function is unclear. Here, we report that mice lacking Hlf are viable with essentially normal hematopoietic parameters, including an intact HSC pool during steady-state hematopoiesis. In contrast, when challenged through transplantation, Hlf-deficient HSCs showed an impaired ability to reconstitute hematopoiesis and became gradually exhausted upon serial transplantation...
December 19, 2017: Cell Reports
https://www.readbyqxmd.com/read/29259719/roles-of-nitric-oxide-and-ethyl-pyruvate-after-peripheral-nerve-injury
#12
REVIEW
Sandesh Panthi, Kripa Gautam
Short-lived reactive nitrogen species and reactive oxygen species have acquired significant attention in the field of biomedical science. Nitric oxide (NO), which was thought to be an unstable gas and pollutant, is now regarded as a gas transmitter like H2S and CO. NO is synthesized inside the mammalian body by l-arginine via three different isoforms of NO synthase whereas pyruvate is a glycolysis product and substrate for TCA cycle. Due to poor solubility and stability, therapeutic potential of pyruvate is limited...
2017: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29259373/mesenchymal-stem-cells-rescue-acute-hepatic-failure-by-polarizing-m2-macrophages
#13
Yan-Wei Li, Chong Zhang, Qiu-Ju Sheng, Han Bai, Yang Ding, Xiao-Guang Dou
AIM: To investigate whether M1 or M2 polarization contributes to the therapeutic effects of mesenchymal stem cells (MSCs) in acute hepatic failure (AHF). METHODS: MSCs were transfused into rats with AHF induced by D-galactosamine (DGalN). The therapeutic effects of MSCs were evaluated based on survival rate and hepatocyte proliferation and apoptosis. Hepatocyte regeneration capacity was evaluated by the expression of the hepatic progenitor surface marker epithelial cell adhesion molecule (EpCAM)...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29247724/anti-hbv-response-to-toll-like-receptor-7-agonist-gs-9620-is-associated-with-intrahepatic-aggregates-of-t-cells-and-b-cells
#14
Li Li, Vivian Barry, Stephane Daffis, Congrong Niu, Erik Huntzicker, Dorothy M French, Igor Mikaelian, Robert E Lanford, William E Delaney, Simon P Fletcher
BACKGROUND & AIMS: GS-9620, an oral agonist of toll-like receptor 7 (TLR7), is in clinical development for the treatment of chronic hepatitis B (CHB). GS-9620 was previously shown to induced prolonged suppression of serum viral DNA and antigens in the chimpanzee and woodchuck models of CHB. Here we investigated the immunomodulatory mechanisms underlying these antiviral effects. METHODS: Archived liver biopsies and paired PBMC samples from a previous chimpanzee study were analyzed by RNA-Seq, qRT-PCR, immunohistochemistry (IHC) and in situ hybridization (ISH)...
December 14, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29229868/sex-dependent-differences-in-inflammatory-responses-during-liver-regeneration-in-a-murine-model-of-acute-liver-injury
#15
Debora Bizzaro, Marika Crescenzi, Rosa Di Liddo, Diletta Arcidiacono, Andrea Cappon, Thomas Bertalot, Vincenzo Amodio, Alessia Tasso, Annalisa Stefani, Valentina Bertazzo, Giacomo Germani, Chiara Frasson, Giuseppe Basso, Pierpaolo Parnigotto, Malcolm Ronald Alison, Patrizia Burra, Maria Teresa Conconi, Francesco Paolo Russo
A sexual dimorphism in liver inflammation and repair was previously demonstrated. Its cellular dissection in the course of acute liver injury (ALI) was explored. BALB/c mice were treated with carbon tetrachloride (CCl4) by intraperitoneal injection and sacrificed after 3, 5 and 8 days. Histological and hepatic cell population analyses were performed. The correlation between androgen receptor (AR) expression and liver recruited inflammatory cells was investigated by treatment with the AR antagonist flutamide...
December 11, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29221811/matrix-metalloproteinase-functions-in-hepatic-injury-and-fibrosis
#16
REVIEW
Martin Roderfeld
Liver fibrosis is the most common final outcome for chronic liver diseases. The complex pathogenesis includes hepatic parenchymal damage as a result of a persistent noxe, activation and recruitment of immune cells, activation of hepatic stellate cells, and the synthesis of fibrotic extracellular matrix (ECM) components leading to scar formation. Clinical studies and animal models demonstrated that fibrosis can be reversible. In this regard matrix metalloproteinases (MMPs) have been focused as therapeutic targets due to their ability to modulate tissue turnover during fibrogenesis as well as regeneration and, of special interest, due to their influence on cellular behavior like proliferation, gene expression, and apoptosis that, in turn, impact fibrosis and regeneration...
December 5, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29217749/hepatitis-delta-virus-persists-during-liver-regeneration-and-is-amplified-through-cell-division-both-in-vitro-and-in-vivo
#17
Katja Giersch, Oliver D Bhadra, Tassilo Volz, Lena Allweiss, Kristoffer Riecken, Boris Fehse, Ansgar W Lohse, Joerg Petersen, Camille Sureau, Stephan Urban, Maura Dandri, Marc Lütgehetmann
OBJECTIVE: Hepatitis delta virus (HDV) was shown to persist for weeks in the absence of HBV and for months after liver transplantation, demonstrating the ability of HDV to persevere in quiescent hepatocytes. The aim of the study was to evaluate the impact of cell proliferation on HDV persistence in vitro and in vivo. DESIGN: Genetically labelled human sodium taurocholate cotransporting polypeptide (hNTCP)-transduced human hepatoma(HepG2) cells were infected with HBV/HDV and passaged every 7 days for 100 days in the presence of the entry inhibitor Myrcludex-B...
December 7, 2017: Gut
https://www.readbyqxmd.com/read/29216879/anti-diabetic-potential-of-sapium-ellipticum-hochst-pax-leaf-extract-in-streptozotocin-stz-induced-diabetic-wistar-rats
#18
Osasenaga Macdonald Ighodaro, Oluseyi Adeboye Akinloye
BACKGOUND: Ethnobatanical survey associates Sapium ellipticum (SE) with antidiabetic usage among other medicinal functions in different parts of Africa. More importantly, previous studies on the plant extract in our laboratory showed that SE has significant effects on the activities of carbohydrate metabolizing enzymes such as glucokinase, glucose-6-phosphatase, α-amylase and α-glucosidase. In view of these, the anti-diabetic potential of the plant leaf extract in streptozotocin (STZ)-induced diabetes rat model (Wistar strain) was examined...
December 8, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29211918/decellularized-human-placenta-supports-hepatic-tissue-and-allows-rescue-in-acute-liver-failure
#19
Zurab Kakabadze, Anne Kakabadze, David Chakhunashvili, Lika Karalashvili, Ekaterine Berishvili, Yogeshwar Sharma, Sanjeev Gupta
Tissue engineering with scaffolds to form transplantable organs is of wide interest. Decellularized tissues have been tested for this purpose, although supplies of healthy donor tissues, vascular recellularization for perfusion and tissue homeostasis in engineered organs pose challenges. We hypothesized decellularized human placenta will be suitable for tissue engineering. The universal availability and unique structures of placenta for accommodating tissue, including presence of embedded vessels, were major attractions...
December 6, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29210278/decellularized-liver-matrix-modified-cryogel-scaffolds-as-potential-hepatocyte-carriers-in-bioartificial-liver-support-systems-and-implantable-liver-constructs
#20
Apeksha Damania, Anupam Kumar, Arun Kumar Teotia, Kimura Haruna, Masamichi Kamihira, Hiroyuki Ijima, Shiv Kumar Sarin, Ashok Kumar
Recent progress in the use of decellularized organ scaffolds as regenerative matrices for tissue engineering holds great promise in addressing the issue of donor organ shortage. Decellularization preserves the mechanical integrity, composition, and microvasculature critical for zonation of hepatocytes in the liver. Earlier studies have reported the possibility of repopulating decellularized matrices with hepatic cell lines or stem cells to improve liver regeneration. In this work, we study the versatility of decellularized liver matrix as a substrate coating of 3D cryogel scaffolds...
December 6, 2017: ACS Applied Materials & Interfaces
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