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https://www.readbyqxmd.com/read/28103636/limited-excessive-voluntary-alcohol-drinking-leads-to-liver-dysfunction-in-mice
#1
Scott A Wegner, Katherine A Pollard, Viktor Kharazia, David Darevsky, Luz Perez, Sanjoy Roychowdhury, Allison Xu, Dorit Ron, Laura E Nagy, Frederic Woodward Hopf
BACKGROUND: Liver damage is a serious and sometimes fatal consequence of long-term alcohol intake, which progresses from early-stage fatty liver (steatosis) to later-stage steatohepatitis with inflammation and fibrosis/necrosis. However, very little is known about earlier stages of liver disruption that may occur in problem drinkers, those who drink excessively but are not dependent on alcohol. METHODS: We examined how repeated binge-like alcohol drinking in C57BL/6 mice altered liver function, as compared with a single binge-intake session and with repeated moderate alcohol consumption...
January 19, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28103630/orientia-tsutsugamushi-ank9-is-a-multifunctional-effector-that-utilizes-a-novel-grip-like-golgi-localization-domain-for-golgi-to-endoplasmic-reticulum-trafficking-and-interacts-with-host-copb2
#2
Andrea R Beyer, Kyle G Rodino, Lauren VieBrock, Ryan S Green, Brittney K Tegels, Lee D Oliver, Richard T Marconi, Jason A Carlyon
Orientia tsutsugamushi causes scrub typhus, a potentially fatal infection that afflicts one million people annually. This obligate intracellular bacterium boasts one of the largest microbial arsenals of ankyrin repeat-containing protein (Ank) effectors, most of which target the endoplasmic reticulum (ER) by undefined mechanisms. Ank9 is the only one proven to function during infection. Here, we demonstrate that Ank9 bears a motif that mimics the GRIP domain of eukaryotic golgins and is necessary and sufficient for its Golgi localization...
January 19, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28103615/radiation-induced-lung-metastasis-development-is-mt1-mmp-dependent-in-a-triple-negative-breast-cancer-mouse-model
#3
Gina Bouchard, Hélène Therriault, Sameh Geha, Rachel Bujold, Caroline Saucier, Benoit Paquette
BACKGROUND: The prognosis of triple-negative breast cancer (TNBC) is still difficult to establish. Some TNBC benefit from radiotherapy (RT) and are cured, while in other patients metastases appear during the first 3 years after treatment. In this study, an animal model of TNBC was used to determine whether the expression of the cell membrane protease MT1-MMP in cancer cells was associated with radiation-stimulated development of lung metastases. METHODS: Using invasion chambers, irradiated fibroblasts were used as chemoattractants to assess the invasiveness of TNBC D2A1 cell lines showing downregulated expression of MT1-MMP, which were compared with D2A1-wt (wild-type) and D2A1 shMT1-mock (empty vector) cell lines...
January 19, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28103587/magnetoresistance-and-hall-resistivity-of-semimetal-wte2-ultrathin-flakes
#4
Xin Luo, Chi Fang, Caihua Wan, Jialin Cai, Yong Liu, Xiufeng Han, Zhihong Lu, Rui Xiong, Zhongming Zeng
This article reports the characterization of WTe<sub>2</sub> ultrathin flakes devices with characterization of magnetoresistance and Hall resistivity. We found that ultrathin flakes of WTe<sub>2</sub> do not exhibit magnetoresistance saturation when subject to high fields, in a manner similar to their bulk characteristic. The linearity of Hall resistivity in our devices could confirm the compensation of electrons and holes. By relating experimental results to a classic two-band model, we demonstrate that the lower magnetoresistance values may be caused by decreased carrier mobility in our samples...
January 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28103577/association-of-rab5-overexpression-in-pancreatic-cancer-with-cancer-progression-and-poor-prognosis-via-e-cadherin-suppression
#5
Takamichi Igarashi, Kenichiro Araki, Takehiko Yokobori, Bolag Altan, Takahiro Yamanaka, Norihiro Ishii, Mariko Tsukagoshi, Akira Watanabe, Norio Kubo, Tadashi Handa, Yasuo Hosouchi, Masahiko Nishiyama, Tetsunari Oyama, Ken Shirabe, Hiroyuki Kuwano
Pancreatic cancer is a common type of cancer with poor prognosis worldwide. Postoperative survival depends on the existence of metastasis. Elucidation of the mechanism underlying cancer progression is important to improve prognosis. The RAS-associated protein RAB5 activates intracellular membrane trafficking, and RAB5 expression is correlated to progression and epithelial mesenchymal transition in various cancers.The expression of RAB5 and E-cadherin in 111 pancreatic cancer samples was investigated by immunohistochemical staining, and the relationship among RAB5 expression, clinicopathological factors, and E-cadherin expression was assessed...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28103571/identification-of-aurintricarboxylic-acid-as-a-selective-inhibitor-of-the-tweak-fn14-signaling-pathway-in-glioblastoma-cells
#6
Alison Roos, Harshil D Dhruv, Ian T Mathews, Landon J Inge, Serdar Tuncali, Lauren K Hartman, Donald Chow, Nghia Millard, Holly H Yin, Jean Kloss, Joseph C Loftus, Jeffrey A Winkles, Michael E Berens, Nhan L Tran
The survival of patients diagnosed with glioblastoma (GBM), the most deadly form of brain cancer, is compromised by the proclivity for local invasion into the surrounding normal brain, which prevents complete surgical resection and contributes to therapeutic resistance. Tumor necrosis factor-like weak inducer of apoptosis (TWEAK), a member of the tumor necrosis factor (TNF) superfamily, can stimulate glioma cell invasion and survival via binding to fibroblast growth factor-inducible 14 (Fn14) and subsequent activation of the transcription factor NF-κB...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28103569/an-intelligent-actuator-fault-reconstruction-scheme-for-robotic-manipulators
#7
Bing Xiao, Shen Yin
This paper investigates a difficult problem of reconstructing actuator faults for robotic manipulators. An intelligent approach with fast reconstruction property is developed. This is achieved by using observer technique. This scheme is capable of precisely reconstructing the actual actuator fault. It is shown by Lyapunov stability analysis that the reconstruction error can converge to zero after finite time. A perfect reconstruction performance including precise and fast properties can be provided for actuator fault...
January 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28103560/identifying-objective-and-subjective-words-via-topic-modeling
#8
Hanqi Wang, Fei Wu, Weiming Lu, Yi Yang, Xi Li, Xuelong Li, Yueting Zhuang
It is observed that distinct words in a given document have either strong or weak ability in delivering facts (i.e., the objective sense) or expressing opinions (i.e., the subjective sense) depending on the topics they associate with. Motivated by the intuitive assumption that different words have varying degree of discriminative power in delivering the objective sense or the subjective sense with respect to their assigned topics, a model named as identified objective-subjective latent Dirichlet allocation (LDA) (iosLDA) is proposed in this paper...
January 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28103558/effective-multi-query-expansions-collaborative-deep-networks-based-feature-learning-for-robust-landmark-retrieval
#9
Yang Wang, Xuemin Lin, Lin Wu, Wenjie Zhang
Given a query photo issued by a user (q-user), the landmark retrieval is to return a set of photos with their landmarks similar to those of the query, while the existing studies on the landmark retrieval focus on exploiting geometries of landmarks for similarity matches between candidate photos and a query photo. We observe that the same landmarks provided by different users over social media community may convey different geometry information depending on the viewpoints and/or angles, and may subsequently yield very different results...
January 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28103557/data-dependent-label-distribution-learning-for-age-estimation
#10
Zhouzhou He, Xi Li, Zhongfei Zhang, Fei Wu, Xin Geng, Yaqing Zhang, Ming-Hsuan Yang, Yueting Zhuang
As an important and challenging problem in computer vision, face age estimation is typically cast as a classification or regression problem over a set of face samples with respect to several ordinal age labels, which have intrinsically cross-age correlations across adjacent age dimensions. As a result, such correlations usually lead to the age label ambiguities of the face samples. Namely, each face sample is associated with a latent label distribution that encodes the cross-age correlation information on label ambiguities...
January 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28103534/examining-the-link-between-cocaine-binging-and-individual-social-and-behavioral-factors-among-street-based-cocaine-users
#11
Élise Roy, Nelson Arruda, Didier Jutras-Aswad, Djamal Berbiche, Michel Perreault, Karine Bertrand, Magali Dufour, Julie Bruneau
AIMS: To estimate the prevalence of cocaine binging and examine associated factors, to characterize binge episodes and to study the relationship between cocaine binging and HIV and HCV risk behaviors among street-based cocaine users. METHODS: A prospective cohort study was conducted in Montréal, Canada. Interviewer-administered questionnaire were carried out at 3-month intervals. Cocaine binging was defined as using large quantities of cocaine, without stopping, over a limited period of time, until resources run out or until being physically incapable of consuming...
January 6, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28103521/sexually-dimorphic-deficits-of-prepulse-inhibition-in-patients-with-major-depressive-disorder-and-their-relationship-to-symptoms-a-large-single-ethnicity-study
#12
Junko Matsuo, Miho Ota, Shinsuke Hidese, Hiroaki Hori, Toshiya Teraishi, Ikki Ishida, Moeko Hiraishi, Hiroshi Kunugi
BACKGROUND: Sensorimotor gating deficits as measured by prepulse inhibition (PPI) of acoustic startle reflex have been repeatedly observed in patients with schizophrenia. However, studies investigating PPI in patients with major depressive disorder (MDD) are scarce, and this issue remains to be elucidated. METHODS: Subjects were 221 patients with MDD and 250 age-matched healthy comparison subjects. Depressive symptoms were assessed by the 21-item version of the Hamilton Depression Rating Scale (HAM-D21), and the scores were divided into six factors...
January 12, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28103512/protein-o-fucosyltransferase-1-promotes-trophoblast-cell-proliferation-through-activation-of-mapk-and-pi3k-akt-signaling-pathways
#13
Chang Liu, Xiaohua Liang, Jiao Wang, Qin Zheng, Yue Zhao, Muhammad Noman Khan, Shuai Liu, Qiu Yan
Protein O-fucosylation is an important glycosylation modification and plays an important role in embryonic development. Protein O-fucosyltransferase 1 (poFUT1) is an essential enzyme that catalyzes the synthesis of protein O-fucosylation. Our previous studies showed that poFUT1 promoted trophoblast cell migration and invasion at the fetal-maternal interface, but the role of poFUT1 in trophoblast cells proliferation remains unclear. Here, immunohistochemistry data showed that poFUT1 and PCNA levels were decreased in abortion patient's trophoblasts compared with women with normal pregnancies...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28103509/3-5-dihydroxy-3-4-7-trimethoxyflavone-induces-er-stress-associated-hct-116-programmed-cell-death-via-redox-signaling
#14
Mahendra Pal Singh, Jaehong Han, Sun Chul Kang
Quercetin, a well cognized bioactive flavone possessing great medicinal value, has limited usage. The rapid gastrointestinal digestion of quercetin is also a major obstacle for its clinical implementation due to low bioavailability and poor aqueous solubility. 3',5-dihydroxy-3,4',7-trimethoxyflavone (DTMF), a novel semi-synthetic derivative of quercetin, is known to modulate several biological activities. Therefore, in the present study we examined the cytotoxic mechanism of DTMF in concentration-dependent manner (25, 50, and 100μM; 24h) against HCT-116 human colon carcinoma cells...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28103508/the-mechanism-of-alopolysaccharide-protecting-ulceralive-colitis
#15
Hu Lin, Li Honglang, Li Weifeng, Chen Junmin, Yang Jiantao, Gu Junjing
The aim of this study is to explain the mechanism of alopolysaccharide protecting ulceralive colitis in cells and animal models. We divided this study into two parts: cell and animal research parts. In the cell research, HT-29 cells were divided into normal group, model group, aloe polysacchride group and positive drug group, the cell model was used by tumor necrosis factor- α (TNF-α) combine with LPS, detecting IL-6 concentration of difference groups by Elisa testing, Apoptosis of each group was detected by flow cytometry...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28103489/enhanced-degradation-of-organic-contaminants-in-water-by-peroxydisulfate-coupled-with-bisulfite
#16
Chengdu Qi, Xitao Liu, Yang Li, Chunye Lin, Jun Ma, Xiaowan Li, Huijuan Zhang
In this study, the bisulfite-peroxydisulfate system (S(IV)/PDS) widely used in polymerization was innovatively applied for organic contaminants degradation in water. The addition of S(IV) into PDS system remarkably enhanced the degradation efficiency of bisphenol A (BPA, a frequently detected endocrine disrupting chemical in the environments) from 17.0% to 84.7% within 360 min. The degradation efficiency of BPA in the S(IV)/PDS system followed pseudo-first-order kinetics, with rate constant values ranging from 0...
January 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28103486/combined-toxic-effects-and-mechanisms-of-microsystin-lr-and-copper-on-vallisneria-natans-lour-hara-seedlings
#17
Zhi Wang, Junqian Zhang, Enhua Li, Liang Zhang, Xuelei Wang, Lirong Song
Microcystin-LR (MCLR) and copper are commonly found in eutrophic water bodies because of eutrophic run-offs, cyanobacterial blooms, and copper algicide applications. However, the ecotoxicological risk of their combination remains unknown. This study investigated the effect of MCLR, Cu, and their mixture on the growth and physiological responses of Vallisneria natans. Results showed that the combined toxicity of them was concentration dependent. Synergistic effects were elicited at low concentrations of MCLR and Cu exposure (≤0...
January 3, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28103482/synaptic-plasticity-onto-dopamine-neurons-shapes-fear-learning
#18
Marco Pignatelli, George Kwabena Essien Umanah, Sissi Palma Ribeiro, Rong Chen, Senthilkumar Senthil Karuppagounder, Hau-Jie Yau, Stephen Eacker, Valina Lynn Dawson, Ted Murray Dawson, Antonello Bonci
Fear learning is a fundamental behavioral process that requires dopamine (DA) release. Experience-dependent synaptic plasticity occurs on DA neurons while an organism is engaged in aversive experiences. However, whether synaptic plasticity onto DA neurons is causally involved in aversion learning is unknown. Here, we show that a stress priming procedure enhances fear learning by engaging VTA synaptic plasticity. Moreover, we took advantage of the ability of the ATPase Thorase to regulate the internalization of AMPA receptors (AMPARs) in order to selectively manipulate glutamatergic synaptic plasticity on DA neurons...
January 18, 2017: Neuron
https://www.readbyqxmd.com/read/28103481/motor-learning-requires-purkinje-cell-synaptic-potentiation-through-activation-of-ampa-receptor-subunit-glua3
#19
Nicolas Gutierrez-Castellanos, Carla M Da Silva-Matos, Kuikui Zhou, Cathrin B Canto, Maria C Renner, Linda M C Koene, Ozgecan Ozyildirim, Rolf Sprengel, Helmut W Kessels, Chris I De Zeeuw
Accumulating evidence indicates that cerebellar long-term potentiation (LTP) is necessary for procedural learning. However, little is known about its underlying molecular mechanisms. Whereas AMPA receptor (AMPAR) subunit rules for synaptic plasticity have been extensively studied in relation to declarative learning, it is unclear whether these rules apply to cerebellum-dependent motor learning. Here we show that LTP at the parallel-fiber-to-Purkinje-cell synapse and adaptation of the vestibulo-ocular reflex depend not on GluA1- but on GluA3-containing AMPARs...
January 18, 2017: Neuron
https://www.readbyqxmd.com/read/28103480/adrenergic-gate-release-for-spike-timing-dependent-synaptic-potentiation
#20
Yanling Liu, Lei Cui, Martin K Schwarz, Yan Dong, Oliver M Schlüter
Spike timing-dependent synaptic plasticity (STDP) serves as a key cellular correlate of associative learning, which is facilitated by elevated attentional and emotional states involving activation of adrenergic signaling. At cellular levels, adrenergic signaling increases dendrite excitability, but the underlying mechanisms remain elusive. Here we show that activation of β2-adrenoceptors promoted STD long-term synaptic potentiation at mouse hippocampal excitatory synapses by inactivating dendritic Kv1.1-containing potassium channels, which increased dendrite excitability and facilitated dendritic propagation of postsynaptic depolarization, potentially improving coincidental activation of pre- and postsynaptic terminals...
January 18, 2017: Neuron
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