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https://www.readbyqxmd.com/read/28934733/exosomes-from-human-induced-pluripotent-stem-cell-derived-mesenchymal-stromal-cells-hipsc-mscs-protect-liver-against-hepatic-ischemia-reperfusion-injury-via-activating-sphingosine-kinase-and-sphingosine-1-phosphate-signaling-pathway
#1
Yingdong Du, Dawei Li, Conghui Han, Haoyu Wu, Longmei Xu, Ming Zhang, Jianjun Zhang, Xiaosong Chen
BACKGROUND/AIMS: This study aimed to evaluate the effects of exosomes produced by human-induced pluripotent stem cell-derived mesenchymal stromal cells (hiPSC-MSCs-Exo) on hepatic ischemia-reperfusion (I/R) injury, as well as the underlying mechanisms. METHODS: Exosomes derived from hiPSC-MSCs were isolated and characterized both biochemically and biophysically. hiPSC-MSCs-Exo were injected systemically into a murine ischemia/reperfusion injury model via the inferior vena cava, and then the therapeutic effects were evaluated...
September 21, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28934671/the-hnf1a-mutant-ala180val-clinical-challenges-in-determining-causality-of-a-rare-hnf1a-variant-in-familial-diabetes
#2
J V Sagen, L Bjørkhaug, B I Haukanes, L Grevle, J Molnes, B G Nedrebø, O Søvik, P R Njølstad, S Johansson, A Molven
AIMS: Heterozygous mutations in hepatocyte nuclear factor-1A (HNF1A) cause maturity-onset diabetes of the young type 3 (MODY3). Our aim was to compare two families with suspected dominantly inherited diabetes and a new HNF1A variant of unknown clinical significance. METHODS: The HNF1A gene was sequenced in two independently recruited families from the Norwegian MODY Registry. Both familes were phenotyped clinically and biochemically. Microsatellite markers around and within the HNF1A locus were used for haplotyping...
September 1, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28934504/accumulation-of-histone-variant-h3-3-with-age-is-associated-with-profound-changes-in-the-histone-methylation-landscape
#3
Andrey Tvardovskiy, Veit Schwämmle, Stefan J Kempf, Adelina Rogowska-Wrzesinska, Ole N Jensen
Deposition of replication-independent histone variant H3.3 into chromatin is essential for many biological processes, including development and reproduction. Unlike replication-dependent H3.1/2 isoforms, H3.3 is expressed throughout the cell cycle and becomes enriched in postmitotic cells with age. However, lifelong dynamics of H3 variant replacement and the impact of this process on chromatin organization remain largely undefined. Using quantitative middle-down proteomics we demonstrate that H3.3 accumulates to near saturation levels in the chromatin of various mouse somatic tissues by late adulthood...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28934350/correction-magnetic-cell-labeling-of-primary-and-stem-cell-derived-pig-hepatocytes-for-mri-based-cell-tracking-of-hepatocyte-transplantation
#4
Dwayne R Roach, Wesley M Garrett, Glenn Welch, Dorela D Shuboni-Mulligan, Thomas J Caperna, Neil C Talbot, Erik M Shapiro
[This corrects the article DOI: 10.1371/journal.pone.0123282.].
2017: PloS One
https://www.readbyqxmd.com/read/28934253/xuezhikang-contributes-to-greater-triglyceride-reduction-than-simvastatin-in-hypertriglyceridemia-rats-by-up-regulating-apolipoprotein-a5-via-the-ppar%C3%AE-signaling-pathway
#5
Shui-Ping Zhao, Rong Li, Wen Dai, Bi-Lian Yu, Lu-Zhu Chen, Xian-Sheng Huang
Xuezhikang (XZK), an extract of Chinese red yeast rice, is recommended as an optimal choice for patients with coronary heart disease (CHD) with markedly elevated triglyceride (TG) levels. This study was designed to compare the hypotriglyceridemic effects between XZK and simvastatin. The role of apolipoprotein A5 (apoA5), a key regulator of TG metabolism and a target gene of peroxisome proliferator-activated receptor α (PPARα), was to be identified in XZK-related hypotriglyceridemic actions. For these goals, hypertriglyceridemia of rats was induced by a high-fructose diet...
2017: PloS One
https://www.readbyqxmd.com/read/28934226/pathological-alterations-in-liver-injury-following-congestive-heart-failure-induced-by-volume-overload-in-rats
#6
Mohammed Shaqura, Doaa M Mohamed, Noureddin B Aboryag, Lama Bedewi, Lukas Dehe, Sascha Treskatsch, Mehdi Shakibaei, Michael Schäfer, Shaaban A Mousa
Heart failure has emerged as a disease with significant public health implications. Following progression of heart failure, heart and liver dysfunction are frequently combined in hospitalized patients leading to increased morbidity and mortality. Here, we investigated the underlying pathological alterations in liver injury following heart failure. Heart failure was induced using a modified infrarenal aortocaval fistula (ACF) in male Wistar rats. Sham operated and ACF rats were compared for their morphometric and hemodynamic data, for histopathological and ultrastructural changes in the liver as well as differences in the expression of apoptotic factors...
2017: PloS One
https://www.readbyqxmd.com/read/28933767/hemin-improves-insulin-sensitivity-and-lipid-metabolism-in-cultured-hepatocytes-and-mice-fed-a-high-fat-diet
#7
Yi Luan, Fang Zhang, Yalan Cheng, Jun Liu, Rui Huang, Menghong Yan, Yuangao Wang, Zhishui He, Hejin Lai, Hui Wang, Hao Ying, Feifan Guo, Qiwei Zhai
Hemin is a breakdown product of hemoglobin. It has been reported that the injection of hemin improves lipid metabolism and insulin sensitivity in various genetic models. However, the effect of hemin supplementation in food on lipid metabolism and insulin sensitivity is still unclear, and whether hemin directly affects cellular insulin sensitivity is yet to be elucidated. Here we show that hemin enhances insulin-induced phosphorylation of insulin receptors, Akt, Gsk3β, FoxO1 and cytoplasmic translocation of FoxO1 in cultured primary hepatocytes under insulin-resistant conditions...
July 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28933629/ezetimibe-ameliorates-steatohepatitis-via-amp-activated-protein-kinase-tfeb-mediated-activation-of-autophagy-and-nlrp3-inflammasome-inhibition
#8
Soo Hyun Kim, Gyuri Kim, Dai Hoon Han, Milim Lee, Irene Kim, Bohkyung Kim, Kook Hwan Kim, Young-Mi Song, Jeong Eun Yoo, Hye Jin Wang, Soo Han Bae, Yong-Ho Lee, Byung-Wan Lee, Eun Seok Kang, Bong-Soo Cha, Myung-Shik Lee
Impairment in macroautophagy/autophagy flux and inflammasome activation are common characteristics of nonalcoholic steatohepatitis (NASH). Considering the lack of approved agents for treating NASH, drugs that can enhance autophagy and modulate inflammasome pathways may be beneficial. Here, we investigated the novel mechanism of ezetimibe, a widely prescribed drug for hypercholesterolemia, as a therapeutic option for ameliorating NASH. Human liver samples with steatosis and NASH were analyzed. For in vitro studies of autophagy and inflammasomes, primary mouse hepatocytes, human hepatoma cells, mouse embryonic fibroblasts with Ampk or Tsc2 knockout, and human or primary mouse macrophages were treated with ezetimibe and palmitate...
September 21, 2017: Autophagy
https://www.readbyqxmd.com/read/28933423/omega-3-pufa-ameliorates-hyperhomocysteinemia-induced-hepatic-steatosis-in-mice-by-inhibiting-hepatic-ceramide-synthesis
#9
Yong-Qiang Dong, Xing-Zhong Zhang, Lu-Lu Sun, Song-Yang Zhang, Bo Liu, Hui-Ying Liu, Xian Wang, Chang-Tao Jiang
Hyperhomocysteinemia (HHcy) is a key risk factor in hepatic steatosis. In this study, we applied a metabolomic approach to investigate the changes in the metabolite profile due to HHcy-induced hepatic steatosis and the effects of omega-3 PUFA (polyunsaturated fatty acid) supplementation in mice. HHcy was induced in mice by giving DL-Hcy (1.8 g/L) in drinking water for 6 weeks, then the mice were sacrificed, and the metabolic profiles of the liver and plasma were analyzed through UPLC-ESI-QTOFMS-based lipidomics...
September 21, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28933119/-research-on-rat-models-of-acute-liver-injury-with-syndrome-of-liver-depression-and-spleen-deficiency
#10
Na-Na Huang, Xiao-Qian Sun, Qian Yang, Xiao-Yu Li, Rong Sun
This paper aimed to establish animal models which are suitable for the activity found, efficacy evaluation of herbs resistant to acute liver injury with syndrome of liver depression and spleen deficiency and new drug research and development based on corresponding of formula and syndrome. The symptoms that are suitable for evaluating the rat models of acute liver injury with syndrome of liver depression and spleen deficiency were extracted according to the evolution rule of the etiology and pathogenesis in traditional Chinese medicine and the modern pathological mechanism...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28932925/hepatic-complications-of-anorexia-nervosa
#11
REVIEW
Elissa Rosen, Neeru Bakshi, Ashlie Watters, Hugo R Rosen, Philip S Mehler
Anorexia nervosa (AN) has the highest mortality rate of all psychiatric illnesses due to the widespread organ dysfunction caused by the underlying severe malnutrition. Starvation causes hepatocyte injury and death leading to a rise in aminotransferases. Malnutrition-induced hepatitis is common among individuals with AN especially as body mass index decreases. Acute liver failure associated with coagulopathy and encephalopathy can rarely occur. Liver enzymes may also less commonly increase as part of the refeeding process due to hepatic steatosis and can be distinguished from starvation hepatitis by the finding of a fatty liver on ultrasonography...
September 20, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28932649/hepatocyte-transplantation-cell-sheet-technology-for-liver-cell-transplantation
#12
REVIEW
Kohei Tatsumi, Teruo Okano
PURPOSE OF REVIEW: We will review the recent developments of cell sheet technology as a feasible tissue engineering approach. Specifically, we will focus on the technological advancement for engineering functional liver tissue using cell sheet technology, and the associated therapeutic effect of cell sheets for liver diseases, highlighting hemophilia. RECENT FINDINGS: Cell-based therapies using hepatocytes have recently been explored as a new therapeutic modality for patients with many forms of liver disease...
2017: Current Transplantation Reports
https://www.readbyqxmd.com/read/28932249/the-novel-protein-c3orf43-accelerates-hepatocyte-proliferation
#13
Chunyan Zhang, Cuifang Chang, Deming Li, Fuchun Zhang, Cunshuan Xu
BACKGROUND: Our previous study found that single-pass membrane protein with coiled-coil domains 1 (C3orf43; XM_006248472.3) was significantly upregulated in the proliferative phase during liver regeneration. This indicates that C3orf43 plays a vital role in liver cell proliferation. However, its physiological functions remains unclear. METHODS: The expressions of C3orf43 in BRL-3A cells transfected with C3orf43-siRNA (C3-siRNA) or overexpressing the vector plasmid pCDH-C3orf43 (pCDH-C3) were measured via RT-qPCR and western blot...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28932082/effects-and-mechanism-of-adenovirus-mediated-phosphatase-and-tension-homologue-deleted-on-chromosome-ten-gene-on-collagen-deposition-in-rat-liver-fibrosis
#14
Shu-Rui Xie, Jun-Yan An, Li-Bo Zheng, Xiao-Xia Huo, Jian Guo, David Shih, Xiao-Lan Zhang
AIM: To evaluate the effects of phosphatase and tension homologue deleted on chromosome ten (PTEN) gene on collagen metabolism in hepatic fibrosis and the underlying mechanisms. METHODS: Rat primary hepatic stellate cells (HSCs) and human LX-2 cells were transfected with adenovirus containing cDNA constructs encoding wild-type PTEN (Ad-PTEN), PTEN mutant G129E gene (Ad-G129E), and RNA interference constructs targeting the PTEN sequence PTEN short hairpin RNA to up-regulate and down-regulate the expression of PTEN...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28932081/-epigallocatechin-3-gallate-enhances-poly-i-c-induced-interferon-%C3%AE-1-production-and-inhibits-hepatitis-c-virus-replication-in-hepatocytes
#15
Yi-Zhong Wang, Jie-Liang Li, Xu Wang, Ting Zhang, Wen-Zhe Ho
AIM: To investigate the effect of (-)-epigallocatechin-3-gallate (EGCG) on polyinosinic-polycytidylic acid (poly I:C)-triggered intracellular innate immunity against hepatitis C virus (HCV) in hepatocytes. METHODS: A cell culture model of HCV infection was generated by infecting a hepatoma cell line, Huh7, with HCV JFH-1 strain (JFH-1-Huh7). Poly I:C with a high molecular weight and EGCG were used to stimulate the JFH-1-Huh7 cells. Real-time reverse transcription-polymerase chain reaction was used to detect the expression levels of intracellular mRNAs and of intracellular and extracellular HCV RNA...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28931802/hepatitis-c-virus-infection-increases-c-jun-n-terminal-kinase-jnk-phosphorylation-and-accentuates-hepatocyte-lipoapoptosis
#16
Hiroko Takaki, Yuko Akazawa, Youko Kido, Mami Morishita, Takuya Honda, Hidetaka Shibata, Satoshi Miuma, Hisamitsu Miyaaki, Naota Taura, Hisayoshi Kondo, Kazuhiko Nakao
BACKGROUND Hepatitis C virus (HCV) infection and metabolic diseases including nonalcoholic steatohepatitis (NASH) exhibit a complex interplay. Although free fatty acid-mediated apoptosis is a prominent feature of NASH, the impact of HCV infection on hepatocyte lipotoxicity has remained largely unexplored. The study aimed at identifying whether infection by HCV affected the apoptotic pathway in hepatocytes during fatty acid assault. MATERIAL AND METHODS OR6 cells, which are derived from human hepatocellular carcinoma Huh-7 cells and harbor a full-length HCV RNA genome replication system, were treated with palmitate...
September 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28931787/heparin-induces-the-mobilization-of-heart-derived-multipotent-mesoangioblasts-during-cardiac-surgery-with-cardiopulmonary-bypass-or-cardiac-catheterization
#17
Yoshihiro Hata, Masayoshi Iwasaki, Keisuke Fujitaka, Haengnam Park, Daisuke Sato, Chiharu Enoki, Naoki Minato, Keita Horitani, Miyuki Nakano, Hiroshi Kishimoto, Kensaku Wada, Masamichi Koyanagi, Yasushi Adachi, Yoshihiro Yamamoto, Andreas M Zeiher, Stefanie Dimmeler, Ichiro Shiojima
BACKGROUND: We previously identified circulating mesoangioblasts (cMABs), a subset of mesenchymal stem cells that express cardiac mesodermal markers, in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB). We also found that hepatocyte growth factor (HGF) is upregulated during cardiac surgery with CPB in humans, and induces MAB-like cell mobilization in rodents. These results strongly suggest that heparin induced MAB mobilization via HGF upregulation. Here, we tested this hypothesis in patients undergoing cardiac surgery or cardiac catheterization...
September 21, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28930162/lean-body-mass-harbors-sensing-mechanisms-that-allow-safeguarding-of-methionine-homeostasis
#18
REVIEW
Yves Ingenbleek
Protein-depleted states generate allosteric inhibition of liver cystathionine β-synthase (CBS), which governs the first enzymatic step of the transsulfuration cascade, resulting in upstream accretion of homocysteine (Hcy) in body fluids. A similar Hcy increase may arise from normal hepatocytes undergoing experimentally-induced impairment of betaine-homocysteine methyltransferase (BHTM) activity or from components of lean body mass (LBM) submitted to any inflammatory disorder. LBM comprises a composite agglomeration of extrarenal tissues characterized by naturally occurring BHTM inactivity...
September 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28929019/heterologous-expression-of-plasmodium-vivax-apical-membrane-antigen-1-pvama1-for-binding-peptide-selection
#19
Ching Hoong Chew, Yvonne Ai Lian Lim, Kek Heng Chua
BACKGROUND: Plasmodium is an obligate intracellular parasite. Apical membrane antigen 1 (AMA1) is the most prominent and well characterized malarial surface antigen that is essential for parasite-host cell invasion, i.e., for sporozoite to invade and replicate within hepatocytes in the liver stage and merozoite to penetrate and replicate within erythrocytes in the blood stage. AMA1 has long served as a potent antimalarial drug target and is a pivotal vaccine candidate. A good understanding of the structure and molecular function of this Plasmodium protein, particularly its involvement in host-cell adhesion and invasion, is of great interest and hence it offers an attractive target for the development of novel therapeutics...
2017: PeerJ
https://www.readbyqxmd.com/read/28928922/liver-transplantation-as-definitive-treatment-of-an-unresectable-mesenchymal-hamartoma-in-a-child-with-beckwith-wiedemann-syndrome
#20
Evelyn T Pan, Dor Yoeli, Michael L Kueht, N Thao N Galvan, Ronald T Cotton, Christine A O'Mahony, Abbas Rana, John A Goss
Mesenchymal liver hamartomas are benign tumors that can cause life-threatening abdominal distension and carry a risk for malignant transformation. In this case report, we describe a 13-month-old male with Beckwith-Wiedemann Syndrome (BWS) who presented with multiple mesenchymal liver hamartomas causing severe intra-abdominal mass effect. Imaging revealed six large multi-locular cystic lesions, ranging from 3.8 to 8.9 cm in diameter. The large size and spread of the tumors necessitated liver transplantation for complete removal...
August 2017: Journal of Surgical Case Reports
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