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https://www.readbyqxmd.com/read/28108274/the-crosstalk-between-wnt-%C3%AE-catenin-signaling-pathway-with-dna-damage-response-and-oxidative-stress-implications-in-cancer-therapy
#1
REVIEW
Ansar Karimaian, Maryam Majidinia, Hossein Bannazadeh Baghi, Bahman Yousefi
DNA repair is essential for maintaining genomic integrity in cells. The dependence of cancer cell survival on proper DNA repair provides an opportunity to treat defective tumors by DNA damaging agents. Not only Wnt signaling has important functions in controlling gene expression, as well as cell polarity, adhesion and behavior, it also highly interacts with DNA damage response (DDR) in different levels. Furthermore, oxidative stress, which is responsible for majority of DNA lesions, affects Wnt signaling in different ways...
January 11, 2017: DNA Repair
https://www.readbyqxmd.com/read/28108257/working-memory-load-dependent-spatio-temporal-activity-of-single-trial-p3-response-detected-with-an-adaptive-wavelet-denoiser
#2
Qiushi Zhang, Xueqian Yang, Li Yao, Xiaojie Zhao
Working memory (WM) refers to the holding and manipulation of information during cognitive tasks. Its underlying neural mechanisms have been explored through both functional magnetic resonance imaging (fMRI) and electroencephalography (EEG). Trial-by-trial coupling of simultaneously collected EEG and fMRI signals has become an important and promising approach to study the spatio-temporal dynamics of such cognitive processes. Previous studies have demonstrated a modulation effect of the WM load on both the BOLD response in certain brain areas and the amplitude of P3...
January 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28107935/tetraphasic-polar-organic-chemical-integrative-sampler-for-the-determination-of-a-wide-polarity-range-organic-pollutants-in-water-the-use-of-performance-reference-compounds-and-in-situ-calibration
#3
A Iparraguirre, A Prieto, A Vallejo, M Moeder, O Zuloaga, N Etxebarria, A Paschke
In the present work, a homemade polar organic chemical integrative sampler (POCIS) was studied for the determination of 16 target analytes. The suitability of the combination of triphasic mixture (used in so called pesticides-POCIS) and octadecyl-functionalized silica gel (C18) as sorbent for POCIS was evaluated for the determination of alkylphenols (APs), several hormones, bisphenol-A (BPA), synthetic musk fragrances and herbicides such as trifluralin (Tri) and alachlor (Ala). With this purpose, POCIS laboratory calibration study, using a continuous-flow calibration system, was carried out in order to determine the uptake behavior and sampling rate (Rs) values for each target analyte...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107672/a-computational-model-of-conditioning-inspired-by-drosophila-olfactory-system
#4
Faramarz Faghihi, Ahmed A Moustafa, Ralf Heinrich, Florentin Wörgötter
Recent studies have demonstrated that Drosophila melanogaster (briefly Drosophila) can successfully perform higher cognitive processes including second order olfactory conditioning. Understanding the neural mechanism of this behavior can help neuroscientists to unravel the principles of information processing in complex neural systems (e.g. the human brain) and to create efficient and robust robotic systems. In this work, we have developed a biologically-inspired spiking neural network which is able to execute both first and second order conditioning...
November 23, 2016: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28107523/look-into-the-hiv-epidemic-of-gay-community-with-a-socio-cultural-perspective-a-qualitative-study-in-china-2015-2016
#5
Huijing He, Fan Lv, Nanci Nanyi Zhang, Zunyou Wu, Qinghua Liao, Zhanjun Chang, Yi Li, Huifang Xu, Lin OuYang, Xiping Huan, Juan Yang
BACKGROUND: Current Chinese studies continue to view male homosexuality through a disease focused lens which pays limited attention to socio-cultural aspects of sexual behavior and HIV transmission. This qualitative study aimed to investigate how socio-cultural factors influence gay men's sexual beliefs and behaviors in contemporary China, and their implications for HIV epidemic. METHODS AND FINDINGS: Qualitative methodology was used in this study. During 2015-2016, in-depth interviews were conducted with 61 self identified gay men in Jiangxi, Henan, Heilongjiang, Guangdong, Jiangsu provinces and Chongqing municipality of China...
2017: PloS One
https://www.readbyqxmd.com/read/28107517/high-emigration-propensity-and-low-mortality-on-transfer-drives-female-biased-dispersal-of-pyriglena-leucoptera-in-fragmented-landscapes
#6
Marcelo Awade, Carlos Candia-Gallardo, Cintia Cornelius, Jean Paul Metzger
Dispersal is a biological process performed in three stages: emigration, transfer and immigration. Intra-specific variation on dispersal behavior, such as sex-bias, is very common in nature, particularly in birds and mammals. However, dispersal is difficult to measure in the field and many hypotheses concerning the causes of sex-biased dispersal remain without empirical confirmation. An important limitation of most empirical studies is that inferences about sex-biased dispersal are based only on emigration proneness or immigration success data...
2017: PloS One
https://www.readbyqxmd.com/read/28107430/discontinuation-from-antiretroviral-therapy-a-continuing-challenge-among-adults-in-hiv-care-in-ethiopia-a-systematic-review-and-meta-analysis
#7
Hailay Abrha Gesesew, Paul Ward, Kifle Woldemichael Hajito, Garumma Tolu Feyissa, Leila Mohammadi, Lillian Mwanri
BACKGROUND: Discontinuation of antiretroviral therapy (ART) reduces the immunological benefit of treatment and increases complications related to human immune-deficiency virus (HIV). However, the risk factors for ART discontinuation are poorly understood in developing countries particularly in Ethiopia. This review aimed to assess the best available evidence regarding risk factors for ART discontinuation in Ethiopia. METHODS: Quantitative studies conducted in Ethiopia between 2002 and 2015 that evaluated factors associated with ART discontinuation were sought across six major databases...
2017: PloS One
https://www.readbyqxmd.com/read/28107391/recreational-drug-use-among-chinese-msm-and-transgender-individuals-results-from-a-national-online-cross-sectional-study
#8
Peizhen Zhao, Songyuan Tang, Cheng Wang, Ye Zhang, John Best, Thitikarn May Tangthanasup, Shujie Huang, Bin Yang, Chongyi Wei, Joseph D Tucker, Weiming Tang
BACKGROUND: Recreational drug use has increased considerably among Chinese men who have sex with men (MSM). The phenomenon has the potentially to increase HIV transmission among Chinese MSM. The aims of this study were: 1) to investigate the prevalence of recreational drug use among Chinese MSM, and 2) to explore the correlation between gay smartphone based sex-seeking applications (gay apps), HIV/STIs testing, group sex, commercial sex, sexual roles and poppers use among Chinese MSM...
2017: PloS One
https://www.readbyqxmd.com/read/28105940/integrated-single-cell-data-analysis-reveals-cell-specific-networks-and-novel-coactivation-markers
#9
Shila Ghazanfar, Adam J Bisogni, John T Ormerod, David M Lin, Jean Y H Yang
BACKGROUND: Large scale single cell transcriptome profiling has exploded in recent years and has enabled unprecedented insight into the behavior of individual cells. Identifying genes with high levels of expression using data from single cell RNA sequencing can be useful to characterize very active genes and cells in which this occurs. In particular single cell RNA-Seq allows for cell-specific characterization of high gene expression, as well as gene coexpression. RESULTS: We offer a versatile modeling framework to identify transcriptional states as well as structures of coactivation for different neuronal cell types across multiple datasets...
December 5, 2016: BMC Systems Biology
https://www.readbyqxmd.com/read/28105576/effects-of-cognitive-behavioral-therapy-for-insomnia-and-armodafinil-on-quality-of-life-in-cancer-survivors-a-randomized-placebo-controlled-trial
#10
Anita R Peoples, Sheila N Garland, Michael L Perlis, Josée Savard, Charles E Heckler, Charles S Kamen, Julie L Ryan, Karen M Mustian, Michelle C Janelsins, Luke J Peppone, Gary R Morrow, Joseph A Roscoe
PURPOSE: Cancer-related insomnia is associated with diminished quality of life (QOL), suggesting that improvement in insomnia may improve QOL in cancer survivors. Cognitive behavioral therapy for insomnia (CBT-I) has been shown to improve insomnia, but less is known regarding its effect on QOL and whether improvement in insomnia corresponds to improved QOL. The present analysis examines the effects of CBT-I, with and without armodafinil, on QOL both directly and indirectly through improvements of insomnia...
January 19, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28103715/irritability-in-youths-a-translational-model
#11
Melissa A Brotman, Katharina Kircanski, Argyris Stringaris, Daniel S Pine, Ellen Leibenluft
Although irritability is among the most common reasons that children and adolescents are brought for psychiatric care, there are few effective treatments. Developmentally sensitive pathophysiological models are needed to guide treatment development. In this review, the authors present a mechanistic model of irritability that integrates clinical and translational neuroscience research. Two complementary conceptualizations of pathological irritability are proposed: 1) aberrant emotional and behavioral responding to frustrative nonreward, mediated by reward-system dysfunction; and 2) aberrant approach responding to threat, mediated by threat-system dysfunction...
January 20, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28103315/multiple-acid-sensors-control-helicobacter-pylori-colonization-of-the-stomach
#12
Julie Y Huang, Emily Goers Sweeney, Karen Guillemin, Manuel R Amieva
Helicobacter pylori's ability to respond to environmental cues in the stomach is integral to its survival. By directly visualizing H. pylori swimming behavior when encountering a microscopic gradient consisting of the repellent acid and attractant urea, we found that H. pylori is able to simultaneously detect both signals, and its response depends on the magnitudes of the individual signals. By testing for the bacteria's response to a pure acid gradient, we discovered that the chemoreceptors TlpA and TlpD are each independent acid sensors...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28103110/engaging-fathers-in-effective-parenting-for-preschool-children-using-shared-book-reading-a-randomized-controlled-trial
#13
Anil Chacko, Gregory A Fabiano, Greta L Doctoroff, Beverly Fortson
Engaging fathers and improving their parenting and, in turn, outcomes for their children in preventive/promotion-focused parenting interventions has been a notable, but understudied, challenge in the field. This study evaluated the effects of a novel intervention, Fathers Supporting Success in Preschoolers: A Community Parent Education Program, which focuses on integrating behavioral parent training with shared book reading (i.e., Dialogic Reading) using key conceptual models (i.e., common elements, deployment model, task shifting) to engage and improve father (i...
January 19, 2017: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/28102509/mice-optimize-timed-decisions-about-probabilistic-outcomes-under-deadlines
#14
Ezgi Gür, Fuat Balcı
Optimal performance in temporal decisions requires the integration of timing uncertainty with environmental statistics such as probability or cost functions. Reward maximization under response deadlines constitutes one of the most stringent examples of these problems. The current study investigated whether and how mice can optimize their timing behavior in a complex experimental setting under a response deadline in which reward maximization required the integration of timing uncertainty with a geometrically increasing probability/decreasing cost function...
January 19, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28101650/speech-disorders-in-parkinson-s-disease-early-diagnostics-and-effects-of-medication-and-brain-stimulation
#15
REVIEW
L Brabenec, J Mekyska, Z Galaz, Irena Rektorova
Hypokinetic dysarthria (HD) occurs in 90% of Parkinson's disease (PD) patients. It manifests specifically in the areas of articulation, phonation, prosody, speech fluency, and faciokinesis. We aimed to systematically review papers on HD in PD with a special focus on (1) early PD diagnosis and monitoring of the disease progression using acoustic voice and speech analysis, and (2) functional imaging studies exploring neural correlates of HD in PD, and (3) clinical studies using acoustic analysis to evaluate effects of dopaminergic medication and brain stimulation...
January 18, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28101530/integrative-analysis-of-disease-signatures-shows-inflammation-disrupts-juvenile-experience-dependent-cortical-plasticity
#16
Milo R Smith, Poromendro Burman, Masato Sadahiro, Brian A Kidd, Joel T Dudley, Hirofumi Morishita
Throughout childhood and adolescence, periods of heightened neuroplasticity are critical for the development of healthy brain function and behavior. Given the high prevalence of neurodevelopmental disorders, such as autism, identifying disruptors of developmental plasticity represents an essential step for developing strategies for prevention and intervention. Applying a novel computational approach that systematically assessed connections between 436 transcriptional signatures of disease and multiple signatures of neuroplasticity, we identified inflammation as a common pathological process central to a diverse set of diseases predicted to dysregulate plasticity signatures...
November 2016: ENeuro
https://www.readbyqxmd.com/read/28100804/role-of-the-different-eyes-in-the-visual-odometry-in-the-wolf-spider-lycosa-tarantula-araneae-lycosidae
#17
Joaquin Ortega-Escobar, Miguel A Ruiz
The wolf spider Lycosa tarantula returns home by means of path integration. Previous studies demonstrated: (i) that the angular component of the outbound run is measured using a polarized-light compass associated with the anterior median eyes; (ii) changes in direction of the substratum are detected by the anterior lateral eyes (ALEs); and (iii) in relation to the linear component of the outbound run, an increase of optic flow, in either the lateral or ventral fields of view, caused spiders to search for the burrow at a point nearer to the goal...
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100736/methyl-cpg-binding-protein-mbd1-regulates-neuronal-lineage-commitment-through-maintaining-adult-neural-stem-cell-identity
#18
Emily M Jobe, Yu Gao, Brian E Eisinger, Janessa K Mladucky, Charles C Giuliani, Laurel E Kelnhofer, Xinyu Zhao
: Methyl-CpG-binding domain 1 (MBD1) belongs to a family of methyl-CpG-binding proteins that are epigenetic "readers" linking DNA methylation to transcriptional regulation. MBD1 is expressed in neural stem cells residing in the dentate gyrus of the adult hippocampus (aNSCs) and MBD1 deficiency leads to reduced neuronal differentiation, impaired neurogenesis, learning deficits, and autism-like behaviors in mice; however, the precise function of MBD1 in aNSCs remains unexplored. Here, we show that MBD1 is important for maintaining the integrity and stemness of NSCs, which is critical for their ability to generate neurons...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28100492/dynamic-assembly-of-ultrasoft-colloidal-networks-enables-cell-invasion-within-restrictive-fibrillar-polymers
#19
Alison M Douglas, Alexandros A Fragkopoulos, Michelle K Gaines, L Andrew Lyon, Alberto Fernandez-Nieves, Thomas H Barker
In regenerative medicine, natural protein-based polymers offer enhanced endogenous bioactivity and potential for seamless integration with tissue, yet form weak hydrogels that lack the physical robustness required for surgical manipulation, making them difficult to apply in practice. The use of higher concentrations of protein, exogenous cross-linkers, and blending synthetic polymers has all been applied to form more mechanically robust networks. Each relies on generating a smaller network mesh size, which increases the elastic modulus and robustness, but critically inhibits cell spreading and migration, hampering tissue regeneration...
January 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28100187/prevalence-of-hiv-and-syphilis-co-infection-and-associated-factors-among-non-commercial-men-who-have-sex-with-men-attending-a-sexually-transmitted-disease-clinic-in-shenzhen-china
#20
Wenjie Dai, Zhenzhou Luo, Ruiwei Xu, Guanglu Zhao, Dan Tu, Lin Yang, Feng Wang, Yumao Cai, Lina Lan, Fuchang Hong, Tubao Yang, Tiejian Feng
BACKGROUND: Although HIV and syphilis co-infection has been frequently observed in men who have sex with men (MSM), only few studies have focused on it. Different subgroups of MSM might exhibit heterogeneous HIV and syphilis risk profiles, indicating that interventions for HIV and HIV-related co-infections may vary with different subgroups of MSM. However, no previous study has investigated HIV and syphilis co-infection among non-commercial MSM (ncMSM) attending a sexually transmitted disease (STD) clinic...
January 18, 2017: BMC Infectious Diseases
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