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https://www.readbyqxmd.com/read/28454369/overexpression-of-erythropoietin-producing-hepatocyte-receptor-b4-and-ephrin-b2-is-associated-with-estrogen-receptor-expression-in-endometrial-adenocarcinoma
#1
Ling-Dan Dong, Xiang-Lin Cheng, Long Zhou, Qing Huang, Jun-Chuan Li, Cun-Jian Yi
Endometrial adenocarcinoma (EC) is one of the most frequently diagnosed types of endometrial cancer and is typically a consequence of continuous estrogen receptor stimulation. Erythropoietin-producing hepatocyte receptor B4 (EphB4) and its ligand ephrin-B2 have been reported to be overexpressed in EC cells; however, the function in EC remains unclear. The present study aimed to elucidate the role of EphB4 and ephrin-B2 in EC. The protein expression pattern of EphB4 and ephrin-B2 was analyzed through immunohistochemistry and western blot analysis in endometrium with adenomyosis or simple endometrial hyperplasia, atypical endometrial hyperplasia, double-positive estrogen receptor (ER)/progesterone receptor (PR) EC and double-negative ER/PR EC...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454352/analysis-of-circulating-adipokines-in-patients-newly-diagnosed-with-solid-cancer-associations-with-measures-of-adiposity-and-tumor-characteristics
#2
Nehad Ayoub, Mohammad Alkhatatbeh, Malak Jibreel, Mera Ababneh
The development and progression of cancer is a complex and multifactorial process and the global prevalence of obesity is markedly increasing. A number of studies have made an association between obesity and increased rates of epithelial tumors. Obesity is associated with altered adipokine levels, potentially contributing to the process of tumor development and metastasis. In the current study, the associations between circulating adipokines and measures of adiposity and tumor characteristics among patients diagnosed with solid malignancies were examined at the time of presentation, and following the administration of chemotherapy...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454246/proliferation-and-motility-of-hepatocellular-pancreatic-and-gastric-cancer-cells-grown-in-a-medium-without-glucose-and-arginine-but-with-galactose-and-ornithine
#3
Minoru Tomizawa, Fuminobu Shinozaki, Yasufumi Motoyoshi, Takao Sugiyama, Shigenori Yamamoto, Naoki Ishige
Human primary hepatocytes are able to survive in a medium without glucose and arginine, but supplemented with galactose and ornithine (hepatocyte selection medium; HSM). To address the possibility of the application of HSM in cancer therapy, hepatocellular carcinoma cells, pancreatic cancer cells and gastric cancer cells were cultured in HSM. Cell proliferation was analyzed using an MTS assay. Morphological changes were analyzed using hematoxylin and eosin staining. Apoptosis was analyzed using a TUNEL assay and cell motility was assessed with a scratch assay...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454244/proliferation-of-sphere-forming-hepatocellular-carcinoma-cells-is-suppressed-in-a-medium-without-glucose-and-arginine-but-with-galactose-and-ornithine
#4
Minoru Tomizawa, Fuminobu Shinozaki, Yasufumi Motoyoshi, Takao Sugiyama, Shigenori Yamamoto, Naoki Ishige
Resistance to sorafenib in hepatocellular carcinoma (HCC) cells exhibiting stemness was evaluated using a sphere formation assay. A hepatocyte selection medium (HSM) deficient in glucose and arginine was used to suppress the proliferation of cell spheres composed of HLF and PLC/PRF/5 HCC cells, which were subjected to a sphere formation assay. Cell spheres were cultured with sorafenib and subjected to a cell proliferation assay and the expression levels of cytochrome P450 (CYP3A4) were analyzed in RNA extracted from sphere-forming cells using reverse transcription-quantitative polymerase chain reaction...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454094/proteolytic-cleavages-in-the-extracellular-domain-of-receptor-tyrosine-kinases-by-membrane-associated-serine-proteases
#5
Li-Mei Chen, Karl X Chai
The epithelial extracellular membrane-associated serine proteases matriptase, hepsin, and prostasin are proteolytic modifying enzymes of the extracellular domain (ECD) of the epidermal growth factor receptor (EGFR). Matriptase also cleaves the ECD of the vascular endothelial growth factor receptor 2 (VEGFR2) and the angiopoietin receptor Tie2. In this study we tested the hypothesis that these serine proteases may cleave the ECD of additional receptor tyrosine kinases (RTKs). We co-expressed the proteases in an epithelial cell line with Her2, Her3, Her4, insulin receptor (INSR), insulin-like growth factor I receptor (IGF-1R), the platelet-derived growth factor receptors (PDGFRs) α and β, or nerve growth factor receptor A (TrkA)...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28453772/hepatic-hazard-assessment-of-silver-nanoparticle-exposure-in-healthy-and-chronically-alcohol-fed-mice
#6
Ali Kermanizadeh, Nicklas R Jacobsen, Martin Roursgaard, Steffen Loft, Peter Møller
Silver (Ag) nanoparticles (NPs) are currently among one of the most widely used nanomaterials. This in turn, implies an increased risk of human and environmental exposure. Alcohol abuse is a global issue with millions of people in the general population affected by the associated adverse effects. The excessive consumption of alcohol is a prominent cause of chronic liver disease which manifest in multiple disorders. In this study the adverse health effects of Ag NP exposure were investigated in models of alcoholic hepatic disease in vitro and in vivo...
April 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28453253/athabasca-oil-sands-petcoke-extract-elicits-biochemical-and-transcriptomic-effects-in-avian-hepatocytes
#7
Doug Crump, Kim Williams, Suzanne Chiu, Yifeng Zhang, Jonathan W Martin
Petroleum coke or "petcoke" is a granular carbonaceous material produced during the upgrading of heavy crude oils, including bitumen. Petcoke dust was recently reported as an environmental contaminant in the Athabasca oil sands region, but the ecotoxicological hazards posed by this complex bitumen-derived material - including those to avian species - have not been characterized. In this study, solvent extracts (x) of delayed and fluid petcoke (xDP and xFP) were prepared and dissolved in dimethylsulfoxide. A water accommodated fraction of delayed petcoke (waDP) was also prepared...
April 28, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28449478/protective-effect-of-propofol-preconditioning-on-ischemia-reperfusion-injury-in-human-hepatocyte
#8
Yuzhu Zhang, Zhenzhen Chen, Nianhai Feng, Junxia Tang, Xingbo Zhao, Chengxiao Liu, Hongyu Xu, Mengyuan Zhang
BACKGROUND: Blood reperfusion after ischemia is the main measure to restore cell function. This study was aimed to explore the effect of propofol on rat and cell models of liver ischemia-reperfusion (I/R) injury, and to investigate its possible mechanism. METHODS: Wistar rats were divided into four groups: control group, sham group, I/R group, and propofol group. Human hepatocyte HL7702 was divided into six groups: control group, I/R group and propofol (5, 10, 20 and 40 µmol/L) groups...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449401/chinese-consensus-on-the-diagnosis-and-management-of-autoimmune-hepatitis-2015-chinese-society-of-hepatology-chinese-society-of-gastroenterology-chinese-society-of-infectious-diseases
#9
Xiong Ma, De Kai Qiu
Autoimmune hepatitis (AIH) is the inflammation of liver parenchyma mediated by the autoimmune response targeting hepatocytes, and is characterized by positive serum autoantibodies, high levels of immunoglobulin G (IgG) and/or hypergammaglobulinemia, and interface hepatitis in liver histology.
April 27, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28449367/metoprolol-pridopidine-drug-drug-interaction-and-food-effect-assessments-of-pridopidine-a-new-drug-for-treatment-of-huntington-disease
#10
Laura Rabinovich-Guilatt, Lilach Steiner, Hussein Hallak, Gina Pastino, Pierandrea Muglia, Ofer Spiegelstein
AIM: Pridopidine is an oral drug in clinical development for treatment of patients with Huntington disease. This study examined the interactions of pridopidine with in vitro cytochrome P450 activity and characterized the effects of pridopidine on CYP2D6 activity in healthy volunteers using metoprolol as a probe substrate. The effect of food on pridopidine exposure was assessed. METHODS: The ability of pridopidine to inhibit and/or induce in vitro activity of drug metabolising enzymes was examined in human liver microsomes and fresh hepatocytes...
April 27, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28449094/hepatic-tm6sf2-overexpression-affects-cellular-apob-trafficking-plasma-lipid-levels-hepatic-steatosis-and-atherosclerosis
#11
Nicole Ehrhardt, Michael E Doche, Shuang Chen, Hui Z Mao, Meghan T Walsh, Candy Bedoya, Maha Guindi, Weidong Xiong, Joseph Ignatius Irudayam, Jahangir Iqbal, Sebastien Fuchs, Samuel W French, M Mahmood Hussain, Moshe Arditi, Vaithilingaraja Arumugaswami, Miklós Péterfy
The human TM6SF2 gene has been implicated in plasma lipoprotein metabolism, alcoholic and non-alcoholic fatty liver disease and myocardial infarction in multiple genome-wide association studies. To investigate the role of Tm6sf2 in metabolic homeostasis, we generated mice with elevated expression using adeno-associated virus (AAV)-mediated gene delivery. Hepatic overexpression of mouse Tm6sf2 resulted in phenotypes previously observed in Tm6sf2-deficient mice including reduced plasma lipid levels, diminished hepatic TG secretion and increased hepatosteatosis...
April 25, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28448819/construction-of-three-dimensional-vascularized-functional-human-liver-tissue-using-a-layer-by-layer-cell-coating-technique
#12
Kazuki Sasaki, Takami Akagi, Tadafumi Asaoka, Hidetoshi Eguchi, Yasunari Fukuda, Yoshifumi Iwagami, Daisaku Yamada, Takehiro Noda, Hiroshi Wada, Kunihito Gotoh, Koichi Kawamoto, Yuichiro Doki, Masaki Mori, Mitsuru Akashi
The creation of artificial liver tissue is an active area of research due to the shortage of donors for liver transplantation. Here we investigated whether a simple and efficient cell coating technique developed in our laboratory could be used to generate functional vascularized liver tissue. This technique creates three-dimensional tissue by loading cells sterically onto other cells that have been coated with layer-by-layer (LbL) nanofilms of fibronectin and gelatin, two extracellular matrix proteins. We used this technique to construct homogenous, dense, well-vascularized liver tissue from cryopreserved human primary hepatocytes, human umbilical vein endothelial cells, and normal human dermal fibroblasts...
February 28, 2017: Biomaterials
https://www.readbyqxmd.com/read/28448816/protective-effect-of-artemisinin-on-chronic-alcohol-induced-liver-damage-in-mice
#13
Xiaoyan Zhao, Liqing Wang, Hao Zhang, Duoduo Zhang, Zhihao Zhang, Jie Zhang
The liver disease related to chronic alcohol consumption is one of the leading causes of death for alcoholics. The efficient drug to ameliorate the alcoholic liver injury was needed urgently. The present study was performed to investigate whether artemisinin possessed the protective effect against chronic alcohol consumption. 50 male Kunming mice were divided into 5 groups: control group (C): 10ml/kg saline+10ml/kg saline, alcohol group (A): 10ml/kg 56%(v/v) alcohol+10ml/kg saline, low dose group of artemisinin (L): 10ml/kg 56%(v/v) alcohol+30mg/kg/day artemisinin, medium dose group of artemisinin (M): 10ml/kg 56%(v/v) alcohol+60mg/kg/day artemisinin, high dose group of artemisinin (H): 10ml/kg 56%(v/v) alcohol+120mg/kg/day artemisinin...
April 13, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28448194/co-administration-of-an-excipient-oligonucleotide-helps-delineate-pathways-of-productive-and-nonproductive-uptake-of-phosphorothioate-antisense-oligonucleotides-in-the-liver
#14
Aaron J Donner, Edward V Wancewicz, Heather M Murray, Sarah Greenlee, Noah Post, Melanie Bell, Walt F Lima, Eric E Swayze, Punit P Seth
Phosphorothioate (PS) modified antisense oligonucleotides (ASOs) have progressed rapidly in the clinic for treating a variety of disease indications. We previously demonstrated that the activity of PS ASOs in the liver can be enhanced by co-infusion of an excipient oligonucleotide (EON). It was posited that the EON saturates a nonproductive uptake pathway(s) thereby permitting accumulation of the PS ASO in a productive tissue compartment. In this report, we measured PS ASO activity following administration by bolus, infusion or co-fusion with EON within hepatocytes and nonparenchymal cells (NPCs), of the liver...
April 27, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28447724/effects-of-gap-junction-intercellular-communication-on-the-docetaxel-induced-cytotoxicity-in-rat-hepatocytes
#15
Nan Tang, Jinghua Liu, Bo Chen, Yuan Zhang, Meiling Yu, Ziqing Cai, Hongpeng Chen
The effect of gap junction intercellular communication (GJIC) on docetaxel-induced hepatotoxicity and its underlying mechanisms are largely unknown. The present study involved investigating the effect of downregulating GJs derived from connexin (Cx) 32 in BRL-3A cells by three different mechanisms: Using a low-density culture; suppression of Cx32 using small interfering RNA; and use of the chemical inhibitor 2‑aminoethoxydiphenyl borate (2‑APB), all of which led to attenuated docetaxel hepatotoxicity. In order to investigate the relevant mechanisms involved, apoptosis and caspase activities of BRL‑3A cells were determined...
March 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447719/hepatocyte-growth-factor-inhibits-tubular-epithelial%C3%A2-myofibroblast-transdifferentiation-by-suppression-of-angiotensin-ii-via-the-jak2-stat3-signaling-pathway
#16
Hong-Yue Wang, Chen Zhang, Qing-Fei Xiao, Hai-Chuan Dou, Yan Chen, Chun-Mei Gu, Ming-Ji Cui
Tubular epithelial‑myofibroblast transdifferentiation (TEMT) is important in the development of chronic renal failure. The present study investigated whether hepatocyte growth factor (HGF) inhibits TEMT, and whether this function may be associated with the inhibition of angiotensin II (AngII) and the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) signaling pathway. Human HK‑2 kidney proximal tubular cells were divided into 4 groups and treated with AngII (1x10‑6 M), HGF (8x10‑3 M), AngII plus HGF or control conditions, followed by an assessment of apoptosis induction and the expression levels of α‑smooth muscle actin (α‑SMA), which is a marker of TEMT...
March 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447390/high-non-esterified-fatty-acid-concentrations-promote-expression-and-secretion-of-fibroblast-growth-factor-21-in-calf-hepatocytes-cultured-in-vitro
#17
J G Wang, Y Z Guo, Y Z Kong, S Dai, B Y Zhao
Negative energy balance is considered as the pathological basis of energy metabolic disorders in periparturient dairy cows. Serum non-esterified fatty acids (NEFA) are one of the most important indicators of energy balance status. Fibroblast growth factor 21 (FGF21) has been identified as a hepatokine involved in regulation of metabolic adaptations, such as promoting hepatic lipid oxidation and ketogenesis, during energy deprivation. However, the direct effects of NEFA on FGF21 expression and secretion in bovine hepatocytes are not entirely clear...
April 26, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28447323/observation-of-clinically-relevant-drug-interaction-in-chimeric-mice-with-humanized-livers-the-case-of-valproic-acid-and-carbapenem-antibiotics
#18
Eiko Suzuki, Kumiko Koyama, Daisuke Nakai, Ryoya Goda, Hiroshi Kuga, Kan Chiba
BACKGROUND AND OBJECTIVE: Human in vitro and dog in vitro/in vivo researches indicate that the drug-drug interaction (DDI) of decreased plasma valproic acid (VPA) concentration by co-administration of carbapenem antibiotics is caused by inhibition of acylpeptide hydrolase (APEH)-mediated VPA acylglucuronide (VPA-G) hydrolysis by carbapenems. In this study, we investigated VPA disposition and APEH activities in TK-NOG chimeric mice, whose livers were highly replaced with human hepatocytes, to evaluate the utility of this animal model and the clinical relevance of the DDI mechanism...
April 26, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28447197/role-of-zinc-in-the-development-progression-of-alcoholic-liver-disease
#19
REVIEW
Craig McClain, Vatsalya Vatsalya, Matthew Cave
Many variables, aside from the amount and duration of alcohol consumption, play a role in the development and progression of alcoholic liver disease (ALD). One critical factor that can be modified is diet/nutrition. We have made major recent advances in our understanding of the interactions of nutrition and ALD. In this article, we review advances made in zinc metabolism/therapy for ALD. There is major zinc dyshomeostasis with ALD which is mediated, in part, by poor intake and absorption, increased excretion, and altered zinc transporters, especially ZIP14...
April 26, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28446854/plasma-malondialdehyde-mda-an-indication-of-liver-damage-in-women-with-pre-eclamsia
#20
Adeniran S Atiba, Fayeofori M Abbiyesuku, Dolapo P Oparinde, Temitope A 'Niran-Atiba, Rasaq A Akindele
BACKGROUND: One of the features associated with pre-eclampsia is elevated liver transaminases. The reason this happens has not been fully described. However, the hepatocytes are not known to be spared by free radical injury. This study was conducted to examine the relationship between product of free radical injury (malondialdehyde) and transaminases in pre-eclamptic women. PATIENTS AND METHODS: A total of 98 and 115 pre-eclamptic and apparently normal pregnant women were selected from the booking clinic of Ladoke Akintola University of Technology Teaching Hospital, Osogbo...
September 2016: Ethiopian Journal of Health Sciences
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