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https://www.readbyqxmd.com/read/28526925/polyphenolic-extract-attenuates-fatty-acid-induced-steatosis-and-oxidative-stress-in-hepatic-and-endothelial-cells
#1
Laura Vergani, Giulia Vecchione, Francesca Baldini, Elena Grasselli, Adriana Voci, Piero Portincasa, Pier Francesco Ferrari, Bahar Aliakbarian, Alessandro A Casazza, Patrizia Perego
PURPOSE: Phenolic compounds (PC) of virgin olive oil exert several biochemical and pharmacological beneficial effects. Some dietary PC seem to prevent/improve obesity and metabolic-related disorders such as non-alcoholic fatty liver disease (NAFLD). We investigated the possible effects of PC extracted from olive pomace (PEOP) and of the main single molecules present in the extract (tyrosol, apigenin, oleuropein, p-coumaric and caffeic acid) in protecting hepatocytes and endothelial cells against triglyceride accumulation and oxidative stress...
May 19, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28526689/long-non-coding-rna-neat1-promotes-hepatocellular-carcinoma-cell-proliferation-through-the-regulation-of-mir-129-5p-vcp-i%C3%AE%C2%BAb
#2
Luo Fang, Jiao Sun, Zongfu Pan, Yu Song, Like Zhong, Yiwen Zhang, Yujia Liu, Xiaowei Zheng, Ping Huang
BACKGROUND: Long non-coding RNA (lncRNA) nuclear-enriched abundant transcript 1 (NEAT1) plays an important role in the pathogenesis and development of several types of cancer. However, the functional mechanism of NEAT1 in hepatocellular carcinoma (HCC) remains unclear. METHODS: The NEAT1 and miR-129-5p expression in HCC tissues and cell lines were quantified by means of qPCR. The effects of NEAT1 expression inhibition or up-regulation in HCC cell lines were analyzed in terms of cell viability and apoptosis...
May 19, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28522832/the-fragment-hmga2-sh-3p20-from-hmga2-mrna-3-utr-promotes-the-growth-of-hepatoma-cells-by-upregulating-hmga2
#3
Yuan Wang, Fuquan Chen, Zhe Yang, Man Zhao, Shuqin Zhang, Yuen Gao, Jinyan Feng, Guang Yang, Weiying Zhang, Lihong Ye, Xiaodong Zhang
High mobility group A2 (HMGA2) plays a crucial role in the development of cancer. However, the mechanism by which HMGA2 promotes the growth of hepatocellular carcinoma (HCC) remains unclear. Here, we explore the hypothesis that HMGA2 may enhance the growth of hepatoma cells through a fragment based on the secondary structure of HMGA2 mRNA 3'-untranslated region (3'UTR). Bioinformatics analysis showed that HMGA2 mRNA displayed a hairpin structure within its 3'UTR, termed HMGA2-sh. Mechanistically, RNA immunoprecipitation assays showed that the microprocessor Drosha or DGCR8 interacted with HMGA2 mRNA in hepatoma cells...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28521610/sphk1-sphingosine-kinase-1-induces-epithelial-mesenchymal-transition-by-promoting-the-autophagy-linked-lysosomal-degradation-of-cdh1-e-cadherin-in-hepatoma-cells
#4
Hong Liu, Yan Ma, Hong-Wei He, Wu-Li Zhao, Rong-Guang Shao
SPHK1 (sphingosine kinase 1), a regulator of sphingolipid metabolites, plays a causal role in the development of hepatocellular carcinoma (HCC) through augmenting HCC invasion and metastasis. However, the mechanism by which SPHK1 signaling promotes invasion and metastasis in HCC remains to be clarified. Here, we reported that SPHK1 induced the epithelial-mesenchymal transition (EMT) by accelerating CDH1/E-cadherin lysosomal degradation and facilitating the invasion and metastasis of HepG2 cells. Initially, we found that SPHK1 promoted cell migration and invasion and induced the EMT process through decreasing the expression of CDH1, which is an epithelial marker...
May 4, 2017: Autophagy
https://www.readbyqxmd.com/read/28516462/metastatic-right-atrial-hepatoma
#5
Khaled Abdelhady, Lindsey C Karavites, Samarth Durgam, Malek G Massad
No abstract text is available yet for this article.
May 17, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28515323/%C3%AE-adrenergic-induction-of-lipolysis-in-hepatocytes-is-inhibited-by-ethanol-exposure
#6
Micah B Schott, Karuna Rasineni, Shaun G Weller, Ryan J Schulze, Arthur C Sletten, Carol A Casey, Mark A McNiven
In liver steatosis i.e., fatty liver), hepatocytes accumulate many large neutral lipid-storage organelles known as lipid droplets (LDs). LDs are important in the maintenance of energy homeostasis, but the signaling mechanisms that stimulate LD metabolism in hepatocytes are poorly defined. In adipocytes, catecholamines target the β-adrenergic (β-AR)/cAMP pathway to activate cytosolic lipases and induce their recruitment to the LD surface. Therefore, the goal of this study was to determine whether hepatocytes, like adipocytes, also undergo cAMP-mediated lipolysis in response to β-AR stimulation...
May 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28512032/cytotoxic-triterpene-diglycosides-from-the-sea-cucumber-stichopus-horrens
#7
Nguyen Xuan Cuong, Le Thi Vien, Le Hoang, Tran Thi Hong Hanh, Do Thi Thao, Nguyen Van Thanh, Nguyen Hoai Nam, Do Cong Thung, Phan Van Kiem, Chau Van Minh
Using various chromatographic separation techniques, eight triterpene diglycosides (1-8), including four new compounds namely stichorrenosides A-D (1-4), were isolated from a methanol extract of the Vietnamese sea cucumber S. horrens. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, 1D and 2D NMR. Their in vitro cytotoxic activity against five human cancer cell lines, Hep-G2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma), was evaluated using SRB methods...
May 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28507720/in-vivo-imaging-of-leucine-aminopeptidase-activity-in-drug-induced-liver-injury-and-liver-cancer-via-a-near-infrared-fluorescent-probe
#8
Xinyuan He, Lihong Li, Yu Fang, Wen Shi, Xiaohua Li, Huimin Ma
The liver, a main detoxification organ, has evolved a complex enzymatic system to respond to multiple pathological conditions, in which leucine aminopeptidase (LAP) has been reported to participate in detoxifying cisplatin in hepatoma cells and contribute to the intrinsic drug resistance. In vivo imaging of LAP activity in liver disease models is thus helpful to further understand the function of LAP in detoxification and medicine, but such an imaging approach is still lacking. Herein, we develop a selective and sensitive near-infrared fluorescent probe (HCAL) for this purpose...
May 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28504966/functional-characterization-of-the-lysosomal-membrane-protein-tmem192-in-mice
#9
Thuy Linh Nguyen, Janna Schneppenheim, Sönke Rudnik, Renate Lüllmann-Rauch, Christian Bernreuther, Irm Hermans-Borgmeyer, Markus Glatzel, Paul Saftig, Bernd Schröder
The Transmembrane protein 192 (TMEM192) is a lysosomal/late endosomal protein initially discovered by organellar proteomics. TMEM192 exhibits four transmembrane segments with cytosolic N- and C-termini and forms homodimers. Devoid of significant homologies, the molecular function of TMEM192 is currently unknown. Upon TMEM192 knockdown in hepatoma cells, a dysregulation of autophagy and increased apoptosis were reported. Here, we aimed to define the physiological role of TMEM192 by analysing consequences of TMEM192 ablation in mice...
April 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28501855/extracellular-ph-is-a-biomarker-enabling-detection-of-breast-cancer-and-liver-cancer-using-cest-mri
#10
Miaomiao Chen, Chaoying Chen, Zhiwei Shen, Xiaolei Zhang, Yanzi Chen, Fengfeng Lin, Xilun Ma, Caiyu Zhuang, Yifei Mao, Haochuan Gan, Peidong Chen, Xiaodan Zong, Renhua Wu
Extracellular pH (pHe) decrease is associated with tumor growth, invasion, metastasis, and chemoresistance, which can be detected by chemical exchange saturation transfer (CEST) magnetic resonance imaging (MRI). Here, we demonstrated that ioversol CEST MRI can be exploited to achieve pHe mapping of the liver cancer microenvironment. In in vitro studies, we firstly explored whether ioversol signal is pH-dependent, and calculated the function equation between the CEST effects of ioversol and pH values, in the range of 6...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28500630/e2f-is-involved-in-radioresistance-of-carbon-ion-induced-apoptosis-via-bax-caspase-3-signal-pathway-in-human-hepatoma-cell
#11
Xie Yi, S I Jing, Wang Yu-Pei, L I Hong-Yan, D I Cui-Xia, Yan Jun-Fang, Y E Yan-Cheng, Zhang Yan-Shan, Zhang Hong
Deletion of p53, most common genetic alteration, is observed in human tumors and reported to lead to improve in cell radioresistance. Heavy-ion irradiation (IR) could induce p53-/- cancer cells apoptosis. However, little is known regarding the molecular mechanism in this type of cell apoptosis. The present studies have focused on mechanisms state of signaling pathways as an activator of the cell fate decisions induced by heavy ion IR without p53. Carbon ion IR could induce up-regulation of E2F1 expression in cancer cells...
May 13, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28499244/microrna-24-1-suppresses-mouse-hepatoma-cell-invasion-and-metastasis-via-directly-targeting-o-glcnac-transferase
#12
Yubo Liu, Huang Huang, Meijun Liu, Qiong Wu, Wenli Li, Jianing Zhang
MicroRNAs (miRNAs) are endogenous non-coding regulatory RNAs involved in multiple cellular processes. Emerging evidences showed that miRNAs are involved in changing the cell surface glycosylation modification and oncogenesis. In this study, the role of miRNA-24-1 in O-GlcNAcylation and metastasis of mouse hepatocarcinoma cells was investigated. miRNAs expression array profiles were obtained from mouse hepatocarcinoma cell lines Hca-P and Hca-F with the low/high lymphatic metastasis potential, respectively. Based on the miRNAs expression array profiles, miRNA-24-1 expression was found to exhibit converse coincidence with metastasis potential, O-GlcNAc transferase (OGT) expression and O-GlcNAcylation...
May 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28498614/hepatic-uptake-of-conjugated-bile-acids-is-mediated-by-both-ntcp-and-oatps-and-modulated-by-intestinal-sensing-of-plasma-bile-acid-levels-in-mice
#13
Davor Slijepcevic, Reinout L P Roscam Abbing, Takeshi Katafuchi, Antje Blank, Joanne M Donkers, Stéphanie van Hoppe, Dirk R de Waart, Dagmar Tolenaars, Jonathan H M van der Meer, Manon Wildenberg, Ulrich Beuers, Ronald P J Oude Elferink, Alfred H Schinkel, Stan F J van de Graaf
BACKGROUND & AIMS: The Na(+) -taurocholate cotransporting polypeptide (NTCP/SLC10A1) is believed to be pivotal for hepatic uptake of conjugated bile acids. However, plasma bile acid levels are normal in a subset of NTCP knockout mice and in mice treated with myrcludex B, a specific NTCP inhibitor. Here, we elucidated which transport proteins mediate the hepatic uptake of conjugated bile acids and demonstrated intestinal sensing of elevated bile acid levels in plasma in mice. METHODS: Mice or healthy volunteers were treated with myrcludex B...
May 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28498550/hbx-protein-mediated-atoh1-downregulation-suppresses-arid2-expression-and-promotes-hepatocellular-carcinoma
#14
Qingzhu Gao, Kai Wang, Ke Chen, Li Liang, Yaqiu Zheng, Yunzhi Zhang, Jin Xiang, Ni Tang
Hepatitis B virus X protein plays a crucial role in the pathogenesis of hepatocellular carcinoma. We previously showed that the tumor suppressor ARID2 inhibits hepatoma cell cycle progression and tumor growth. Here, we evaluated whether hepatitis B virus X protein was involved in the modulation of ARID2 expression and hepatocarcinogenesis associated with hepatitis B virus infection. ARID2 expression was downregulated in HBV-replicative hepatoma cells, HBV transgenic mice, and HBV-related clinical HCC tissues...
May 12, 2017: Cancer Science
https://www.readbyqxmd.com/read/28498467/antibody-to-human-%C3%AE-fetoprotein-inhibits-cell-growth-of-human-hepatocellular-carcinoma-cells-by-resuscitating-the-pten-molecule-in-vitro-experiments
#15
Kiyoshi Ohkawa, Tadashi Asakura, Yutaka Tsukada, Tomokazu Matsuura
It has been proposed that α-fetoprotein (AFP) is a new member of the intracellular signaling molecule family of the phosphoinositide 3-kinase (PI3K)/AKT signaling pathway via interaction with the phosphatase and tensin homolog (PTEN). In this study, the effects of anti-human AFP antibody on the functions of PTEN were examined using an AFP-producing human hepatoma cell line. The antibody caused significant inhibition of cell growth, compared to a normal IgG control, with the accumulation of intracellular immune complexes followed by significant reduction of cytosolic functional AFP...
May 3, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28493823/hepatitis-c-virus-core-protein-targets-4e-bp1-expression-and-phosphorylation-and-potentiates-myc-induced-liver-carcinogenesis-in-transgenic-mice
#16
Cosette Abdallah, Charlène Lejamtel, Nassima Benzoubir, Serena Battaglia, Nazha Sidahmed-Adrar, Christophe Desterke, Matthieu Lemasson, Arielle R Rosenberg, Didier Samuel, Christian Bréchot, Delphine Pflieger, François Le Naour, Marie-Françoise Bourgeade
Hepatitis C virus (HCV) is a leading cause of liver diseases including the development of hepatocellular carcinoma (HCC). Particularly, core protein has been involved in HCV-related liver pathologies. However, the impact of HCV core on signaling pathways supporting the genesis of HCC remains largely elusive. To decipher the host cell signaling pathways involved in the oncogenic potential of HCV core, a global quantitative phosphoproteomic approach was carried out. This study shed light on novel differentially phosphorylated proteins, in particular several components involved in translation...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28492809/serum-microrna-30c-levels-are-correlated-with-disease-progression-in-xinjiang-uygur-patients-with-chronic-hepatitis-b
#17
J Zhang, J Ma, H Wang, L Guo, J Li
We aimed to investigate the potential role and mechanism of microRNA-30c (miR-30c) in the pathological development of chronic hepatitis B (CHB). The serum levels of miR-30c in hepatitis B virus (HBV) carrier Xinjiang Uygur patients with inactive, low-replicative, high-replicative and HBe antigen-positive CHB were investigated. HepG2 cells were co-transfected with pHBV1.3 and miR-30c mimic or inhibitor or scramble RNA. The effects of miR-30c dysregulation on HBV replication and gene expression, cell proliferation and cell cycle were then investigated...
May 4, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28489767/the-association-between-hepatitis-b-mutants-and-hepatocellular-carcinoma-a-meta-analysis
#18
Fangfang Wei, Qiaolan Zheng, Maoyin Li, Maosheng Wu
BACKGROUND: More and more studies focus on the relationship between hepatitis B virus (HBV) basal core promoter/precore (BCP/PC) mutations, but it remains controvercial, we conducted a meta-analysis to investigate the features of hepatitis B virus basal core promoter/precore mutations on the progression of hepatocellular carcinoma (HCC). METHODS: A comprehensive search was conducted for articles published between January 1, 2005 and December 31, 2015 using the following databases: PubMed, Embase, Cochrane Library, Wanfang, and China National Knowledge Infrastructure...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28487989/purification-of-a-polyclonal-antibody-against-cd147-for-elisa-using-antigen%C3%A2-immunoaffinity-chromatography
#19
Shuangshuang Liu, Shasha Li, Yang Zhang, Ye Wang, Yumeng Zhu, Bin Wang, Zhi-Nan Chen
The immunoglobulin superfamily member CD147 is a widely expressed glycoprotein that occurs in both a membrane‑spanning and soluble form. Sandwich ELISA is a powerful tool for analyzing soluble antigens. The aim of the present study was to obtain a highly specific polyclonal antibody against human CD147 that can be used for sandwich ELISA analysis. Expression of recombinant CD147 by a eukaryotic expression system was used to immunize rabbits to obtain antiserum. A highly specific polyclonal antibody that was able to detect soluble CD147 in sandwich ELISA was obtained by antigen‑immunoaffinity chromatography purification...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28485153/antioxidant-potential-of-essential-oil-from-lavandula-angustifolia-in-in-vitro-and-ex-vivo-cultured-liver-cells
#20
K Kozics, A Srancikova, E Sedlackova, E Horvathova, M Melusova, V Melus, Z Krajcovicova, M Sramkova
Lavender is a commonly used herb in traditional medicine in Asia and Europe. It has been reported to be an effective medical plant in treating inflammation, depression and stress, thanks to its sedative and anxiolytic action, thrombotic, and antimicrobial properties. In the present study we investigated the protective effects of essential oil from Lavandula angustifolia (LO) against hydrogen peroxide and tert-butyl hydroperoxide -induced DNA damage. Also the effects of LO on the levels of enzymatic and non-enzymatic antioxidants (SOD-superoxide dismutase, GPx-glutathione peroxidase, GSH-glutathione) were evaluated in in vitro (human hepatoma cell line HepG2) and in ex vivo (freshly isolated rat hepatocytes) systems...
May 9, 2017: Neoplasma
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