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https://www.readbyqxmd.com/read/28441762/replication-and-oncolytic-activity-of-an-avian-orthoreovirus-in-human-hepatocellular-carcinoma-cells
#1
Robert A Kozak, Larissa Hattin, Mia J Biondi, Juan C Corredor, Scott Walsh, Max Xue-Zhong, Justin Manuel, Ian D McGilvray, Jason Morgenstern, Evan Lusty, Vera Cherepanov, Betty-Anne McBey, David Leishman, Jordan J Feld, Byram Bridle, Éva Nagy
Oncolytic viruses are cancer therapeutics with promising outcomes in pre-clinical and clinical settings. Animal viruses have the possibility to avoid pre-existing immunity in humans, while being safe and immunostimulatory. We isolated an avian orthoreovirus (ARV-PB1), and tested it against a panel of hepatocellular carcinoma cells. We found that ARV-PB1 replicated well and induced strong cytopathic effects. It was determined that one mechanism of cell death was through syncytia formation, resulting in apoptosis and induction of interferon stimulated genes (ISGs)...
April 24, 2017: Viruses
https://www.readbyqxmd.com/read/28441571/negative-histology-with-surgically-treated-tubal-ectopic-pregnancies-a-retrospective-cohort-study
#2
Linda Farahani, Anjita Sinha, Jilly Lloyd, Melissa Islam, Jackie A Ross
OBJECTIVE: To determine the outcome of histological examinations of surgical specimens obtained from treatment of tubal ectopic pregnancy and to correlate with clinical findings, pre-operative ultrasound scans and the type of surgery. STUDY DESIGN: A retrospective cohort study of 941 women diagnosed with a tubal ectopic pregnancy in the Early Pregnancy Unit and having surgical treatment at King's College Hospital, London. Clinical and ultrasound data had been entered contemporaneously on our electronic early pregnancy database and hospital clinical records over an 11year period from 2004 to 2014...
April 2, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28441481/best-practices-of-computer-aided-drug-discovery-cadd-lessons-learned-from-the-development-of-a-preclinical-candidate-for-prostate-cancer-with-a-new-mechanism-of-action
#3
Fuqiang Ban, Kush Dalal, Huifang Li, Eric LeBlanc, Paul S Rennie, Artem Cherkasov
Small-molecule drug design is a complex and iterative decision-making process relying on pre-existing knowledge and driven by experimental data. Low molecular weight chemicals represent an attractive therapeutic option as they are readily accessible to organic synthesis and can easily be characterized.1 Their potency, as well as pharmacokinetic and pharmacodynamic properties can be systematically and rationally investigated, and ultimately optimized via expert science behind medicinal chemistry and methods of computer-aided drug design (CADD)...
April 25, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28441415/pax7-remodels-the-chromatin-landscape-in-skeletal-muscle-stem-cells
#4
Karin C Lilja, Nan Zhang, Alessandro Magli, Volkan Gunduz, Christopher J Bowman, Robert W Arpke, Radbod Darabi, Michael Kyba, Rita Perlingeiro, Brian D Dynlacht
Pluripotent stem cells (PSC) hold great promise for the treatment of human skeletal muscle diseases. However, it remains challenging to convert PSC to skeletal muscle cells, and the mechanisms by which the master regulatory transcription factor, Pax7, promotes muscle stem (satellite) cell identity are not yet understood. We have taken advantage of PSC-derived skeletal muscle precursor cells (iPax7), wherein the induced expression of Pax7 robustly initiates the muscle program and enables the in vitro generation of precursors that seed the satellite cell compartment upon transplantation...
2017: PloS One
https://www.readbyqxmd.com/read/28441408/short-term-internet-search-using-makes-people-rely-on-search-engines-when-facing-unknown-issues
#5
Yifan Wang, Lingdan Wu, Liang Luo, Yifen Zhang, Guangheng Dong
The Internet search engines, which have powerful search/sort functions and ease of use features, have become an indispensable tool for many individuals. The current study is to test whether the short-term Internet search training can make people more dependent on it. Thirty-one subjects out of forty subjects completed the search training study which included a pre-test, a six-day's training of Internet search, and a post-test. During the pre- and post- tests, subjects were asked to search online the answers to 40 unusual questions, remember the answers and recall them in the scanner...
2017: PloS One
https://www.readbyqxmd.com/read/28441005/plasma-activated-copper-nanocube-catalysts-for-efficient-carbon-dioxide-electroreduction-to-hydrocarbons-and-alcohols
#6
Dunfeng Gao, Ioannis Zegkinoglou, Nuria J Divins, Fabian Scholten, Ilya Sinev, Philipp Grosse, Beatriz Roldan Cuenya
Carbon dioxide electroreduction to chemicals and fuels powered by renewable energy sources is considered a promising path to address climate change and energy storage needs. We have developed highly active and selective copper (Cu) nanocube catalysts with tunable Cu(100) facet and oxygen/chlorine ion content by low-pressure plasma pre-treatments. These catalysts display lower overpotentials and higher ethylene, ethanol and n-propanol selectivity, resulting in a maximum Faradaic efficiency (FE) of ~73% for C2 and C3 products...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28440874/role-of-glycogen-synthase-kinase-3-in-ischemia-induced-blood-brain-barrier-disruption-in-aged-female-rats
#7
Han Xiao, Mingyang Deng, Binbin Yang, Jianguang Tang, Zhiping Hu
Estrogen receptors have protective effects against ischemic brain injury. However, the molecular mechanisms underlying this phenomenon have yet to be well studied. Given that inhibition of glycogen synthase kinase (GSK3) can reduce cerebral ischemia/reperfusion injury, we hypothesized that estrogen receptors-mediated protective effects against ischemia-induced blood brain barrier (BBB) disruption involve inhibition of GSK3. Thus, we evaluated GSK3 expression in the brain of ovariectomized female rats, and examined the effects of intracerebroventricular pre-treatments of SB216763, GSK3 inhibitor, on BBB permeability following middle cerebral artery occlusion (MCAO)...
April 25, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28440729/2-arachidonoylglycerol-endocannabinoid-signaling-coupled-to-metabotropic-glutamate-receptor-type-5-modulates-anxiety-like-behavior-in-the-rat-ventromedial-prefrontal-cortex
#8
Ana F Almeida-Santos, Fabricio A Moreira, Francisco S Guimaraes, Daniele C Aguiar
2-Arachidonoylglycerol and anandamide are the main endocannabinoids, which act through cannabinoid type-1 and type-2 receptors. Among its many functions, anandamide modulates anxiety-like behaviors in the ventromedial prefrontal cortex. The role of 2-arachidonoylglycerol in this region, however, has remained unclear. Here, we verified whether intra- ventromedial prefrontal cortex injection of 2-arachidonoylglycerol or URB602, a monoacylglycerol lipase inhibitor (responsible for 2-arachidonoylglycerol hydrolysis), induce anxiolytic-like effects in Wistar rats...
April 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28440501/transfer-of-cd11c-lamina-propria-mononuclear-phagocytes-from-post-infectious-irritable-bowel-syndrome-causes-mucosal-barrier-dysfunction-and-visceral-hypersensitivity-in-recipient-mice
#9
Ya-Jun Ren, Lei Zhang, Tao Bai, Hong-Lu Yu, Ying Li, Wei Qian, Si Jin, Zhi-Fan Xiong, Huan Wang, Xiao-Hua Hou
The role of low-grade inflammation in the development of post‑infectious irritable bowel syndrome (PI‑IBS) has attracted increasing attention. Abnormal CD11c+ mononuclear phagocytes, such as dendritic cells (DCs), macrophages, and monocytes, are involved in the disruption of immune tolerance in organisms, which can lead to the development of chronic inflammatory diseases. The present study tested the hypothesis that CD11c+ lamina propria mononuclear phagocytes (CD11c+ LPMPs) contribute to increased mucosal permeability and visceral hypersensitivity in a PI‑IBS mouse model...
April 25, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28440456/tetrahydropalmatine-inhibits-lipid-accumulation-through-ampk-signaling-pathway-in-3t3%C3%A2-l1-adipocytes
#10
Guang-Chun Piao, Guan-Cheng Liu, Xue-Jun Jin, Dan Jin, Hai-Dan Yuan
Tetrahydropalmatine (THP), one of the active components of Rhizoma corydalis, has been reported to exert several pharmacological effects, including anti‑inflammatory, anti‑tumor and analgesic activities. However, its effect on obesity and the underlying molecular mechanisms that may be involved have not yet been elucidated. In the present study, the inhibitory effects of THP on the adipogenesis in 3T3‑L1 adipocytes was examined using hstology, western blotting and RT‑qPCR. THP was identified to significantly suppress lipid accumulation in 3T3‑L1 cells and it inhibited pre‑adipocyte differentiation in a concentration‑dependent manner, as evidenced by the reduced formation of lipid droplets and decreased triglyceride levels and glycerol‑3‑phosphate dehydrogenase activity...
April 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28440421/allicin-induces-the-upregulation-of-abca1-expression-via-ppar%C3%AE-lxr%C3%AE-signaling-in-thp-1-macrophage-derived-foam-cells
#11
Xiao-Long Lin, Hui-Jun Hu, Yuan-Bo Liu, Xue-Mei Hu, Xiao-Juan Fan, Wei-Wen Zou, Yong-Quan Pan, Wen-Quan Zhou, Min-Wen Peng, Cai-Hong Gu
Allicin is considered anti-atherosclerotic due to its antioxidant and anti-inflammatory effects, which makes it an important drug for the prevention and treatment of atherosclerosis. However, the effects of allicin on foam cells are unclear. Thus, in this study, we examined the effects of allicin on lipid accumulation via peroxisome proliferator-activated receptor γ (PPARγ)/liver X receptor α (LXRα) in THP‑1 macrophage-derived foam cells. THP‑1 cells were exposed to 100 nM phorbol myristate acetate (PMA) for 24 h, and then to oxydized low-density lipoprotein (ox-LDL; 50 mg/ml) to induce foam cell formation...
April 11, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28440398/lycopene-inhibits-nf-%C3%AE%C2%BAb-activation-and-adhesion-molecule-expression-through-nrf2-mediated-heme-oxygenase-1-in-endothelial-cells
#12
Po-Min Yang, Huang-Zhi Chen, Yu-Ting Huang, Chia-Wen Hsieh, Being-Sun Wung
The endothelial expression of cell adhesion molecules plays a leading role in atherosclerosis. Lycopene, a carotenoid with 11 conjugated double bonds, has been shown to have anti-inflammatory properties. In the present study, we demonstrate a putative mechanism for the anti-inflammatory effects of lycopene. We demonstrate that lycopene inhibits the adhesion of tumor necrosis factor α (TNFα)-stimulated monocytes to endothelial cells and suppresses the expression of intercellular cell adhesion molecule-1 (ICAM-1) at the transcriptional level...
April 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28440338/unravelling-the-contributions-of-motor-experience-and-conceptual-knowledge-in-action-perception-a-training-study
#13
S A Gerson, M Meyer, S Hunnius, H Bekkering
Prior knowledge affects how we perceive the world and the sensorimotor system actively guides our perception. An ongoing dispute regards the extent to which prior motor knowledge versus conceptual knowledge modulates the observation of others' actions. Research indicates that motor experience increases motor activation during action perception. Other research, however, has shown that conceptual familiarity with actions also modulates motor activation, i.e., increased motor activation during observation of unfamiliar, compared to conceptually familiar, actions...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28440198/the-role-of-neutrophil-proteases-in-lps-induced-production-of-regulatory-rheumatoid-factor-that-suppresses-autoimmunity
#14
Elena Stolyarova, Liubov Beduleva, Alexandr Sidorov, Igor Menshikov, Alexey Terentiev, Kseniya Vachrusheva
BACKGROUND: We recently identified a regulatory rheumatoid factor (regRF), the production of which is associated with autoimmune disease resistance and remission. In studies of regRF in the blood of healthy rats, spontaneous increases in the regRF level were noted. We suggest that in the normal state, a mechanism exists for maintaining the activity of the pool of regRF-producing lymphocytes at a level that makes it possible to control the expansion of autoreactive lymphocytes. OBJECTIVE: The purpose of this study was to test the hypothesis that the endogenous stimulator of regRF production is Fc fragments of IgG that are formed upon exposure to the proteases of neutrophils...
April 24, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28439881/effect-of-cocoa-on-blood-pressure
#15
REVIEW
Karin Ried, Peter Fakler, Nigel P Stocks
BACKGROUND: High blood pressure is an important risk factor for cardiovascular disease, contributing to about 50% of cardiovascular events worldwide and 37% of cardiovascular-related deaths in Western populations. Epidemiological studies suggest that cocoa-rich products reduce the risk of cardiovascular disease. Flavanols found in cocoa have been shown to increase the formation of endothelial nitric oxide which promotes vasodilation and therefore blood pressure reduction. Here we update previous meta-analyses on the effect of cocoa on blood pressure...
April 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28439875/epigenetic-repression-of-mir-375-is-the-dominant-mechanism-for-constitutive-activation-of-the-pdpk1-rps6ka3-signalling-axis-in-multiple-myeloma
#16
Shotaro Tatekawa, Yoshiaki Chinen, Masaki Ri, Tomoko Narita, Yuji Shimura, Yayoi Matsumura-Kimoto, Taku Tsukamoto, Tsutomu Kobayashi, Eri Kawata, Nobuhiko Uoshima, Tomohiko Taki, Masafumi Taniwaki, Hiroshi Handa, Shinsuke Iida, Junya Kuroda
Cytogenetic/molecular heterogeneity is the hallmark of multiple myeloma (MM). However, we recently showed that the serine/threonine kinase PDPK1 and its substrate RPS6KA3 (also termed RSK2) are universally active in MM, and play pivotal roles in myeloma pathophysiology. In this study, we assessed involvement of aberrant miR-375 repression in PDPK1 overexpression in MM. An analysis of plasma cells from 30 pre-malignant monoclonal gammopathies of undetermined significance and 73 MM patients showed a significant decrease in miR-375 expression in patient-derived plasma cells regardless of the clinical stage, compared to normal plasma cells...
April 25, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28439726/a-pilot-study-of-patient-centered-outcome-assessment-using-promis-for-patients-undergoing-colorectal-surgery
#17
Traci L Hedrick, Amy M Harrigan, Robert H Thiele, Charles M Friel, Benjamin D Kozower, George J Stukenborg
PURPOSE: Few studies have assessed patient-reported outcomes following colorectal surgery. The absence of this information makes it difficult to inform patients about the near-term effects of surgery, beyond outcomes assessed by traditional clinical measures. This study was designed to provide information about the effects of colorectal surgery on physical, mental, and social well-being outcomes. METHODS: The NIH Patient-Reported Outcomes Measurement Information System (PROMIS®) Assessment Center was used to collect patient responses prior to surgery and at their routine postoperative visit...
April 24, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28439702/a-comparison-of-apixaban-and-dabigatran-etexilate-for-thromboprophylaxis-following-hip-and-knee-replacement-surgery
#18
Adriane Mayer, Philipp Schuster, Bernd Fink
INTRODUCTION: Patients who have undergone hip or knee replacement surgery are exposed to a high risk of developing a post-operative venous thromboembolus and so have a need for an effective, medication-based, thrombosis prophylaxis. New orally active anticoagulants have been available for a few years now. These specific substances directly block either thrombin (e.g., dabigatran etexilate) or Factor Xa (e.g., apixaban). It is not clear whether there are any efficacy differences between these two substances because there have never been any head-to-head studies carried out...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28438981/acute-inflammation-reveals-gabaa-receptor-mediated-nociception-in-mouse-dorsal-root-ganglion-neurons-via-pge2-receptor-4-signaling
#19
In Jeong Jang, Alexander J Davies, Nozomi Akimoto, Seung Keun Back, Pa Reum Lee, Heung Sik Na, Hidemasa Furue, Sung Jun Jung, Yong Ho Kim, Seog Bae Oh
Gamma-aminobutyric acid (GABA) depolarizes dorsal root ganglia (DRG) primary afferent neurons through activation of Cl(-) permeable GABAA receptors but the physiologic role of GABAA receptors in the peripheral terminals of DRG neurons remains unclear. In this study, we investigated the role of peripheral GABAA receptors in nociception using a mouse model of acute inflammation. In vivo, peripheral administration of the selective GABAA receptor agonist muscimol evoked spontaneous licking behavior, as well as spinal wide dynamic range (WDR) neuron firing, after pre-conditioning with formalin but had no effect in saline-treated mice...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28438764/neurogenic-hypertension-and-the-secret-of-respiration
#20
Benedito H Machado, Daniel B Zoccal, Davi J A Moraes
In spite of recent advances on the knowledgement of the neural control of cardiovascular function, the cause of sympathetic overactivity in neurogenic hypertension remains unknown. Studies from our laboratory point out that rats submitted to chronic intermittent hypoxia (CIH), an experimental model of neurogenic hypertension, present changes in the central respiratory network that impact the pattern of sympathetic discharge and the levels of arterial pressure. In addition to the fine coordination of respiratory muscle contraction and relaxation, essential for O2 and CO2 pulmonary exchanges, neurons of the respiratory network are precisely connected to the neurons controlling the sympathetic activity in the brainstem...
April 24, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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