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https://www.readbyqxmd.com/read/28230844/network-neuroscience
#1
REVIEW
Danielle S Bassett, Olaf Sporns
Despite substantial recent progress, our understanding of the principles and mechanisms underlying complex brain function and cognition remains incomplete. Network neuroscience proposes to tackle these enduring challenges. Approaching brain structure and function from an explicitly integrative perspective, network neuroscience pursues new ways to map, record, analyze and model the elements and interactions of neurobiological systems. Two parallel trends drive the approach: the availability of new empirical tools to create comprehensive maps and record dynamic patterns among molecules, neurons, brain areas and social systems; and the theoretical framework and computational tools of modern network science...
February 23, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28229297/characterizing-biomarkers-in-osteosarcoma-metastasis-based-on-an-ego-network
#2
Zhen Liu, Yan Song
OBJECTIVES: To characterize biomarkers that underlie osteosarcoma (OS) metastasis based on an ego-network. RESULTS: From the microarray data, we obtained 13,326 genes. By combining PPI data and microarray data, 10,520 shared genes were found and constructed into ego-networks. 17 significant ego-networks were identified with p < 0.05. In the pathway enrichment analysis, seven ego-networks were identified with the most significant pathway. CONCLUSIONS: These significant ego-modules were potential biomarkers that reveal the potential mechanisms in OS metastasis, which may contribute to understanding cancer prognoses and providing new perspectives in the treatment of cancer...
February 22, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28229245/drug-use-and-sexual-hiv-transmission-risk-among-men-who-have-sex-with-men-and-women-msmw-men-who-have-sex-with-men-only-msmo-and-men-who-have-sex-with-women-only-mswo-and-the-female-partners-of-msmw-and-mswo-a-network-perspective
#3
Typhanye V Dyer, Maria R Khan, Milagros Sandoval, Abenaa Acheampong, Rotrease Regan, Melissa Bolyard, Pedro Mateu-Gelabert, Samuel R Friedman
We described drug use, sex risk, and STI/HIV among men who have sex with men and women (MSMW) and their female partners. We used the Network, Norms and HIV/STI Risk among Youth (NNAHRAY) study to evaluate drug use, sex risk, and biologically-confirmed STI/HIV in (1) MSMW and men who had sex with men only (MSMO) versus men who had sex with women only (MSWO) and (2) female partners of MSMW versus female partners of MSWO (N = 182 men, 152 women). MSMW versus MSWO had 30 to 60% increased odds of substance use, over twice the odds of multiple partnerships, and almost five times the odds of sex trade and HIV infection...
February 22, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28228063/psychiatric-consultation-and-referral-of-persons-who-have-attempted-suicide
#4
Marc Roelands, Reginald Deschepper, Johan Bilsen
BACKGROUND: Persons who have attempted suicide are often admitted to a hospital's emergency department (ED). The risk of them repeating their attempt is lower if they have had access to a psychiatrist in hospital and had been referred to mental health care services. However, the literature suggests this is often lacking. AIMS: To describe perceived barriers to and supportive factors for psychiatric consultation and appropriate referral of suicide attempters in the ED...
February 23, 2017: Crisis
https://www.readbyqxmd.com/read/28226701/an-image-resolution-perspective-on-functional-activity-mapping
#5
Keith Dillon, Yu-Ping Wang, Keith Dillon, Yu-Ping Wang, Yu-Ping Wang, Keith Dillon
In this paper we apply techniques for numerical estimation of system resolution from imaging, to the regression problem of relating biological data to phenotypes. Our approach can be viewed as an extension of Backus-Gilbert theory, which attempts to find the most concentrated estimator that may be reliably computed in an inverse problem. Applied to a regression model, we estimate a minimal combination of collinear variables that may be found in a predictor, which gives a robust multivariable estimate of the network relationships in the data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226699/estimating-multimodal-brain-connectivity-in-multiple-sclerosis-an-exploratory-factor-analysis
#6
Matteo Mancini, Giovanni Giulietti, Barbara Spano, Marco Bozzali, Mara Cercignani, Silvia Conforto, Matteo Mancini, Giovanni Giulietti, Barbara Spano, Marco Bozzali, Mara Cercignani, Silvia Conforto, Giovanni Giulietti, Mara Cercignani, Silvia Conforto, Matteo Mancini, Barbara Spano, Marco Bozzali
Graph-theoretical approaches have become a popular way to model brain data collected using magnetic resonance imaging (MRI), both from the structural and the functional perspectives. In structural networks, tract-based mapping allows to model different aspects of brain structures by means of the specific characteristics of the different MRI modalities. However, there has been little effort to join the information carried by each modality and to understand what level of common variance is shown in these data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226597/a-node-wise-analysis-of-the-uterine-muscle-networks-for-pregnancy-monitoring
#7
N Nader, M Hassan, W Falou, C Marque, M Khalil, N Nader, M Hassan, W Falou, C Marque, M Khalil, M Khalil, W Falou, C Marque, M Hassan, N Nader
The recent past years have seen a noticeable increase of interest in the correlation analysis of electrohysterographic (EHG) signals in the perspective of improving the pregnancy monitoring. Here we propose a new approach based on the functional connectivity between multichannel (4×4 matrix) EHG signals recorded from the women's abdomen. The proposed pipeline includes i) the computation of the statistical couplings between the multichannel EHG signals, ii) the characterization of the connectivity matrices, computed by using the imaginary part of the coherence, based on the graph-theory analysis and iii) the use of these measures for pregnancy monitoring...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224029/designing-clinical-and-genetic-guidelines-of-colorectal-cancer-screening-as-an-effective-roadmap-for-risk-management
#8
Mohammad Reza Zali, Reza Safdari, Elham Maserat, Hamid Asadzadeh Aghdaei
AIM: We aimed to present clinical and genetic guidelines of colorectal cancer screening for risk assessment of populations at risk. BACKGROUND: National guidelines can be used as a guide for choosing the method of screening for each individual. These guidelines facilitate decision making and support the delivery of cancer screening service. METHODS: In the first step, a comparative study was performed by using secondary data extracted from the literature review...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28223482/a-network-perspective-reveals-decreasing-material-diversity-in-studies-on-nanoparticle-interactions-with-dissolved-organic-matter
#9
Nicole Sani-Kast, Jérôme Labille, Patrick Ollivier, Danielle Slomberg, Konrad Hungerbühler, Martin Scheringer
Dissolved organic matter (DOM) strongly influences the properties and fate of engineered nanoparticles (ENPs) in aquatic environments. There is an extensive body of experiments on interactions between DOM and ENPs and also larger particles. [We denote particles on the nano- and micrometer scale as particulate matter (PM).] However, the experimental results are very heterogeneous, and a general mechanistic understanding of DOM-PM interactions is still missing. In this situation, recent reviews have called to expand the range of DOM and ENPs studied...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223372/perspectives-of-low-socioeconomic-status-mothers-of-premature-infants
#10
Elizabeth Enlow, Laura J Faherty, Sara Wallace-Keeshen, Ashley E Martin, Judy A Shea, Scott A Lorch
BACKGROUND AND OBJECTIVES: Transitioning premature infants from the NICU to home is a high-risk period with potential for compromised care. Parental stress is high, and families of low socioeconomic status may face additional challenges. Home visiting programs have been used to help this transition, with mixed success. We sought to understand the experiences of at-risk families during this transition to inform interventions. METHODS: Mothers of infants born at <35 weeks' gestation, meeting low socioeconomic status criteria, were interviewed by telephone 30 days after discharge to assess caregiver experiences of discharge and perceptions of home visitors (HVs)...
February 21, 2017: Pediatrics
https://www.readbyqxmd.com/read/28220377/altered-functional-connectivity-architecture-of-the-brain-in-medication-overuse-headache-using-resting-state-fmri
#11
Zhiye Chen, Xiaoyan Chen, Mengqi Liu, Zhao Dong, Lin Ma, Shengyuan Yu
BACKGROUND: Functional connectivity density (FCD) could identify the abnormal intrinsic and spontaneous activity over the whole brain, and a seed-based resting-state functional connectivity (RSFC) could further reveal the altered functional network with the identified brain regions. This may be an effective assessment strategy for headache research. This study is to investigate the RSFC architecture changes of the brain in the patients with medication overuse headache (MOH) using FCD and RSFC methods...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28220109/temporal-stability-and-the-effect-of-transgenerational-transfer-on-fecal-microbiota-structure-in-a-long-distance-migratory-bird
#12
Jakub Kreisinger, Lucie Kropáčková, Adéla Petrželková, Marie Adámková, Oldřich Tomášek, Jean-François Martin, Romana Michálková, Tomáš Albrecht
Animal bodies are inhabited by a taxonomically and functionally diverse community of symbiotic and commensal microorganisms. From an ecological and evolutionary perspective, inter-individual variation in host-associated microbiota contributes to physiological and immune system variation. As such, host-associated microbiota may be considered an integral part of the host's phenotype, serving as a substrate for natural selection. This assumes that host-associated microbiota exhibits high temporal stability, however, and that its composition is shaped by trans-generational transfer or heritable host-associated microbiota modulators encoded by the host genome...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28220065/prediction-of-mild-cognitive-impairment-conversion-using-a-combination-of-independent-component-analysis-and-the-cox-model
#13
Ke Liu, Kewei Chen, Li Yao, Xiaojuan Guo
Mild cognitive impairment (MCI) represents a transitional stage from normal aging to Alzheimer's disease (AD) and corresponds to a higher risk of developing AD. Thus, it is necessary to explore and predict the onset of AD in MCI stage. In this study, we propose a combination of independent component analysis (ICA) and the multivariate Cox proportional hazards regression model to investigate promising risk factors associated with MCI conversion among 126 MCI converters and 108 MCI non-converters from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28219776/deactivation-in-the-posterior-mid-cingulate-cortex-reflects-perceptual-transitions-during-binocular-rivalry-evidence-from-simultaneous-eeg-fmri
#14
Abhrajeet Roy, Keith Jamison, Sheng He, Steve Engel, Bin He
Binocular rivalry is a phenomenon in which perception spontaneously shifts between two different images that are dichoptically presented to the viewer. By elucidating the cortical networks responsible for these stochastic fluctuations in perception, we can potentially learn much about the neural correlates of visual awareness. We obtained concurrent EEG-fMRI data for a group of 20 healthy human subjects during the continuous presentation of dichoptic visual stimuli. The two eyes' images were tagged with different temporal frequencies so that eye specific steady-state visual evoked potential (SSVEP) signals could be extracted from the EEG data for direct comparison with changes in fMRI BOLD activity associated with binocular rivalry...
February 17, 2017: NeuroImage
https://www.readbyqxmd.com/read/28216369/role-of-socio-cultural-and-economic-factors-in-cyprinid-fish-distribution-networks-and-consumption-in-lawa-lake-region-northeast-thailand-novel-perspectives-on-opisthorchis-viverrini-transmission-dynamics
#15
Christina Sunyoung Kim, John F Smith, Apiporn Suwannatrai, Pierre Echaubard, Bruce Wilcox, Sasithorn Kaewkes, Paiboon Sithithaworn, Banchob Sripa
Opisthorchis viverrini (Ov) is a fish-borne parasite endemic in parts of Lao PDR, Cambodia, southern Vietnam and Northeast Thailand (Isaan) where an estimated 10 million people are infected. Human Ov infection, associated with hepatobiliary complications, including cholangiocarcinoma (CCA), occurs when infected fish are consumed raw or undercooked, a longstanding cultural tradition in the region. This mixed- methods descriptive study was carried out in Isaan villages around Lawa Lake, Khon Kaen Province, known for their Ov endemicity...
February 16, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28214963/investigating-the-potential-impact-of-social-talk-on-prevention-through-social-networks-the-relationships-between-social-talk-and-refusal-self-efficacy-and-norms
#16
Hye Jeong Choi, Michael Hecht, Rachel A Smith
Interpersonal communication among participants plays an important role in the impact and effectiveness of prevention programs (Southwell & Yzer, Communication Theory 19:1-8, 2009). This study focused on adolescents' informal conversations about a prevention program, referred to as social talk, from a social network perspective. We provide both a conceptualization of social talk in relation to prevention programs and an operationalization of it by examining adolescents' social networks. Participants (N = 185) were eighth-grade students attending a middle school substance-abuse prevention program called keepin' it REAL (kiR)...
February 18, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28214890/a-new-perspective-for-osteosarcoma-therapy-proteasome-inhibition-by-mln9708-2238-successfully-induces-apoptosis-and-cell-cycle-arrest-and-attenuates-the-invasion-ability-of-osteosarcoma-cells-in-vitro
#17
Renhao Liu, Chunjiang Fu, Jiabing Sun, Xvming Wang, Shuo Geng, Xiaoyu Wang, Jilong Zou, Zhenggang Bi, Chenglin Yang
BACKGROUND: The proteasome exists in all eukaryotic cells and provides the main route of intracellular proteins degradation involved in cell growth and apoptosis. Proteasome inhibition could block protein degradation pathways and disturb regulatory networks, possibly leading to profound effects on cell growth, particularly in cancer cells. A proteasome inhibitor with an appropriate toxicity index for malignant cells rather than normal cells would be an attractive anticancer therapy. METHODS: The human osteosarcoma (OS) cell lines MG-63 and Saos-2 and normal osteoblast cells were used to study the antitumour activity of the proteasome inhibitor MLN9708/2238...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28212116/developing-a-community-of-practice-for-hiv-care-supporting-knowledge-translation-in-a-regional-training-initiative
#18
Donna M Gallagher, Lisa R Hirschhorn, Laura S Lorenz, Priyatam Piya
INTRODUCTION: Ensuring knowledgeable, skilled HIV providers is challenged by rapid advances in the field, diversity of patients and providers, and the need to retain experienced providers while training new providers. These challenges highlight the need for education strategies, including training and clinical consultation to support translation of new knowledge to practice. New England AIDS Education and Training Center (NEAETC) provides a range of educational modalities including academic peer detailing and distance support to HIV providers in six states...
February 15, 2017: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/28211086/variation-of-the-rates-of-necrotising-enterocolitis-in-the-neonatal-networks-in-england
#19
Nicholas T Longford
Necrotising enterocolitis is an oft-fatal disease of the intestinal tract in neonates born prematurely and with low birthweight. We study the variation of its rates across the neonatal networks (groups of hospital-based neonatal care units) in England. We illustrate the problematic nature of hypothesis testing for a key decision, which an analysis is meant to inform, and apply an approach based on decision theory. We emphasise the role of sensitivity analysis in dealing with the ambiguity encountered in the process of eliciting information about the perspective of the client or sponsor for whom the analysis is conducted...
February 17, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28208369/traffic-congestion-and-the-lifetime-of-networks-with-moving-nodes
#20
Xianxia Yang, Jie Li, Cunlai Pu, Meichen Yan, Rajput Ramiz Sharafat, Jian Yang, Konstantinos Gakis, Panos M Pardalos
For many power-limited networks, such as wireless sensor networks and mobile ad hoc networks, maximizing the network lifetime is the first concern in the related designing and maintaining activities. We study the network lifetime from the perspective of network science. In our model, nodes are initially assigned a fixed amount of energy moving in a square area and consume the energy when delivering packets. We obtain four different traffic regimes: no, slow, fast, and absolute congestion regimes, which are basically dependent on the packet generation rate...
January 2017: Physical Review. E
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