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Bertine de Vries, Jooske T van Busschbach, Elisabeth C D van der Stouwe, André Aleman, Jan J M van Dijk, Paul H Lysaker, Johan Arends, Saskia A Nijman, Gerdina H M Pijnenborg
Psychotic disorders often have been linked with violence. However, studies have shown that people with a psychotic disorder are more often victim than perpetrator of violence. The objective of this meta-analysis was to review prevalence rates for different types of victimization and to identify risk factors associated with victimization. Based on a search in MEDLINE, PsycINFO, and Web of Science, 27 studies were found with samples consisting of adults with a psychotic disorder and possible victimization occurring during adulthood and data on "violent victimization," "sexual victimization," "non-violent victimization," and/or "victimization not otherwise specified...
March 14, 2018: Schizophrenia Bulletin
Orion Mowbray, Porter F Jennings, Tenesha Littleton, Claudette Grinnell-Davis, Jay O'Shields
Child welfare involvement has been linked to child behavioral health issues, including increased likelihood of internalizing mental health problems such as depression and anxiety, and externalizing behavioral problems such as oppositional behaviors and substance use problems. One predictor of child behavioral health is caregiver mental health. Although, there remains a specific gap associated with identification of factors among caregivers that are associated with longitudinal child behavioral health trajectories...
March 13, 2018: Child Abuse & Neglect
Alberto Perez, Florian Sittel, Gerhard Stock, Ken A Dill
The molecular actions of proteins occur along reaction coordinates. Current computer methods have limited ability to explore them. We describe a fast protocol called MELD-path that: (1) efficiently samples relevant conformational states via MELD, an accelerator of Molecular Dynamics (MD), (2) seeds multiple short MD trajectories from MELD states, then (3) constructs Markov State Models (MSM) that give the routes and kinetics. We tested the method against extensive (multi μs) MD simulations of the right-handed- to left-handed-helix transition of a 9-mer peptide of AIB, the symmetry of which allows us to establish convergence...
March 16, 2018: Journal of Chemical Theory and Computation
Alex Han, Alfred C Gellhorn
OBJECTIVE: Knee osteoarthritis (OA) has a significant impact on quality of life (QOL). Although QOL is generally thought to diminish over time, it is unknown if different patient groups demonstrate unique patterns of change in QOL. We sought to identify and characterize QOL trajectories in knee OA. DESIGN: This prospective cohort study included 1013 individuals with symptomatic knee OA from the Osteoarthritis Initiative. We used group-based trajectory modeling to identify distinct temporal patterns of change in the Knee Injury and Osteoarthritis Outcome Score (KOOS) QOL subscale over 8 years...
March 15, 2018: American Journal of Physical Medicine & Rehabilitation
Michael J Widener, Leia M Minaker, Jessica L Reid, Zachary Patterson, Tara Kamal Ahmadi, David Hammond
OBJECTIVE: To examine the potential links between activity spaces, the food retail environment and food shopping behaviours for the population of young, urban adults. DESIGN: Participants took part in the Canada Food Study, which collected information on demographics, food behaviour, diet and health, as well as an additional smartphone study that included a seven-day period of logging GPS (global positioning system) location and food purchases. Using a time-weighted, continuous representation of participant activity spaces generated from GPS trajectory data, the locations of food purchases and a geocoded food retail data set, negative binomial regression models were used to explore what types of food retailers participants were exposed to and where food purchases were made...
March 16, 2018: Public Health Nutrition
Thomas Lilienkamp, Ulrich Parlitz
Transient chaos in spatially extended systems can be characterized by the length of the transient phase, which typically grows quickly with the system size (supertransients). For a large class of these systems, the chaotic phase terminates abruptly, without any obvious precursors in commonly used observables. Here we investigate transient spatiotemporal chaos in two different models of this class. By probing the state space using perturbed trajectories we show the existence of a "terminal transient phase," which occurs prior to the abrupt collapse of chaotic dynamics...
March 2, 2018: Physical Review Letters
Tibor Gyori, Balazs Olasz, Gabor Paragi, Gabor Czako
Accuracy of the different levels of electronic structure theory is frequently studied for stationary-point properties, however, little is known about the effects of the electronic structure methods and basis sets on the dynamics of chemical reactions. Here we report such an investigation for the F- + CH3 I SN 2 and proton-transfer reactions by developing 20 different analytical potential energy surfaces (PESs) obtained at the HF/DZ, HF/TZ, HF-D3(BJ)/DZ, HF-D3(BJ)/TZ, MP2/DZ, MP2/TZ, MP2-F12/DZ, MP2-F12/TZ, CCSD/DZ, CCSD-F12b/DZ, CCSD(T)/DZ, CCSD(T)-F12b/DZ, OQVCCD(T)/DZ, B97-1/TZ, PBE0/TZ, PBE0-D3(BJ)/TZ, M06-2X/TZ, M06-2X-D3(0)/TZ, B2PLYP/TZ, and B2PLYP-D3(BJ)/TZ levels of theory, where DZ and TZ denote the aug-cc-pVDZ and aug-cc-pVTZ basis sets with a relativistic effective core potential and the corresponding bases for iodine...
March 16, 2018: Journal of Physical Chemistry. A
Junichi Tokuda, Laurent Chauvin, Brian Ninni, Takahisa Kato, Franklin King, Kemal Tuncali, Nobuhiko Hata
Patient-mounted needle guide devices for
 percutaneous ablations are vulnerable to patient motion. The objective of this study is to develop and evaluate a software system for MRI-compatible patient-mounted needle guide device that can adaptively compensate for the displacement of the device due to the patient motion using a novel image-based automatic device-to-image registration.
 Materials and Methods. We developed a software system for an MRI-compatible patient-mounted needle guide device for percutaneous ablations...
March 16, 2018: Physics in Medicine and Biology
Corey M Leidenfrost, Matthew D Scalco, Elizabeth Randall, Peter S Martin, Samuel J Sinclair, Travis J Stewart, Ronald Schoelerman, Daniel Antonius
Early identification of treatment needs in incarcerated individuals with serious mental illness has significant implications. Validated assessment instruments to guide treatment are lacking in correctional settings. Hierarchical linear modeling was used to examine the predictive validity of the Level of Care Index (LOCI) in 35 inmates admitted to a specialized treatment unit. The LOCI score was predictive of levels of depressogenic psychopathology and psychological well-being as well as changes in these constructs over time...
January 1, 2018: Journal of Correctional Health Care
Andrea J Santamaría, Juan P Solano, Francisco D Benavides, James D Guest
Cell transplant-mediated tissue repair of the damaged spinal cord is being tested in several clinical trials. The current candidates are neural stem cells, stromal cells, and autologous Schwann cells (aSC). Due to their peripheral origin and limited penetration of astrocytic regions, aSC are transplanted intralesionally as compared to neural stem cells that are transplanted into intact spinal cord. Injections into either location can cause iatrogenic injury, and thus technical precision is important in the therapeutic risk-benefit equation...
2018: Methods in Molecular Biology
Eric S Zhou, Karen Clark, Christopher J Recklitis, Richard Obenchain, Matthew Loscalzo
PURPOSE: Cancer patients are likely to experience sleep problems. Understanding their perception of sleep problems is important as subjective symptom experience is associated with treatment-seeking behavior. We explored the prevalence of sleep problems and its correlates in a large sample of cancer patients at an important but understudied stage of their cancer journey: prior to initiating treatment. METHODS: Cancer patients (5702) (67.5% female; 76.9% White; 23...
March 15, 2018: International Journal of Behavioral Medicine
Ayori Mitsutake, Hiroshi Takano
Molecular dynamics simulation is a powerful method for investigating the structural stability, dynamics, and function of biopolymers at the atomic level. In recent years, it has become possible to perform simulations on time scales of the order of milliseconds using special hardware. However, it is necessary to derive the important factors contributing to structural change or function from the complicated movements of biopolymers obtained from long simulations. Although some analysis methods for protein systems have been developed using increasing simulation times, many of these methods are static in nature (i...
March 15, 2018: Biophysical Reviews
Ling-Zhen Cao, Xiao-Wei Fu, Chao-Xing Hu, Kong-Ming Wu
Pantala flavescens (Fabricius 1798) (Odonata: Libellulidae) is one of the most common species of migratory dragonflies. P. flavescens adults were captured by a searchlight trap on Beihuang Island (BH Island; 38°24'N, 120°55'E) from 2003 to 2016, where there is no freshwater. This inspired our research to analyze the pattern of seasonal migration and population dynamics. Stable hydrogen isotope measurement and the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) were used to simulate the migration pathway of P...
March 12, 2018: Environmental Entomology
Christopher L Jones, Derek G Kamper
Finger-thumb coordination is crucial to manual dexterity but remains incompletely understood, particularly following neurological injury such as stroke. While being controlled independently, the index finger and thumb especially must work in concert to perform a variety of tasks requiring lateral or palmar pinch. The impact of stroke on this functionally critical sensorimotor control during dynamic tasks has been largely unexplored. In this study, we explored finger-thumb coupling during close-open pinching motions in stroke survivors with chronic hemiparesis...
2018: Frontiers in Neurology
Shiwei Zheng, Efthymia Papalexi, Andrew Butler, William Stephenson, Rahul Satija
Hematopoietic stem cells (HSCs) give rise to diverse cell types in the blood system, yet our molecular understanding of the early trajectories that generate this enormous diversity in humans remains incomplete. Here, we leverage Drop-seq, a massively parallel single-cell RNA sequencing (scRNA-seq) approach, to individually profile 20,000 progenitor cells from human cord blood, without prior enrichment or depletion for individual lineages based on surface markers. Our data reveal a transcriptional compendium of progenitor states in human cord blood, representing four committed lineages downstream from HSC, alongside the transcriptional dynamics underlying fate commitment...
March 15, 2018: Molecular Systems Biology
Tolulope T Sajobi, Meng Wang, Oluwagbohunmi Awosoga, Maria Santana, Danielle Southern, Zhiying Liang, Diane Galbraith, Stephen B Wilton, Hude Quan, Michelle M Graham, Matthew T James, William A Ghali, Merrill L Knudtson, Colleen Norris
BACKGROUND: Health-related quality of life (HRQOL) assessment is an important health outcome for measuring the efficacy of treatments and interventions for coronary artery disease (CAD). HRQOL is known to improve over the first year after interventions for CAD, but there is limited knowledge of the changes in HRQOL beyond 1 year. We investigated heterogeneity in long-term trajectories of HRQOL in patients with CAD. METHODS AND RESULTS: Data were obtained from 6226 patients identified from the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease with at least 1-vessel CAD who underwent their first catheterization between 2006 and 2009...
March 2018: Circulation. Cardiovascular Quality and Outcomes
Fur-Hsing Wen, Jen-Shi Chen, Wen-Chi Chou, Chia-Hsun Hsieh, Wen-Cheng Chang, Ming-Mo Hou, Siew Tzuh Tang
CONTEXT/OBJECTIVES: Our study addressed important knowledge gaps about trajectories of distinct conjoint symptom-functional states, i.e., patterns for different levels of combined symptom distress and functional impairment, over cancer patients' last year and their ability to predict survival. METHODS: We identified distinct symptom-functional states and explored their changes over 317 terminally ill cancer patients' last year by a transition model using hidden Markov modeling...
March 12, 2018: Journal of Pain and Symptom Management
Jorge Rubio-Gracia, Biniyam G Demissei, Jozine M Ter Maaten, John G Cleland, Christopher M O'Connor, Marco Metra, Piotr Ponikowski, John R Teerlink, Gad Cotter, Beth A Davison, Michael M Givertz, Daniel M Bloomfield, Howard Dittrich, Kevin Damman, Juan I Pérez-Calvo, Adriaan A Voors
BACKGROUND: Congestion is the main reason for hospital admission for acute decompensated heart failure (ADHF). A better understanding of the clinical course of congestion and factors associated with decongestion are therefore important. We studied the clinical course, predictors and prognostic value of congestion in a cohort of patients admitted for ADHF by including different indirect markers of congestion (residual clinical congestion, brain natriuretic peptides (BNP) trajectories, hemoconcentration or diuretic response)...
May 1, 2018: International Journal of Cardiology
Long Chen, Wen Tang, Nigel W John, Tao Ruan Wan, Jian Jun Zhang
BACKGROUND AND OBJECTIVE: While Minimally Invasive Surgery (MIS) offers considerable benefits to patients, it also imposes big challenges on a surgeon's performance due to well-known issues and restrictions associated with the field of view (FOV), hand-eye misalignment and disorientation, as well as the lack of stereoscopic depth perception in monocular endoscopy. Augmented Reality (AR) technology can help to overcome these limitations by augmenting the real scene with annotations, labels, tumour measurements or even a 3D reconstruction of anatomy structures at the target surgical locations...
May 2018: Computer Methods and Programs in Biomedicine
Til Wykes, Eileen Joyce, Tjasa Velikonja, Andrew Watson, Gregory Aarons, Max Birchwood, Matteo Cella, Sue Dopson, David Fowler, Kathy Greenwood, Sonia Johnson, Paul McCrone, Jesus Perez, Andrew Pickles, Clare Reeder, Diana Rose, Swaran Singh, Dominic Stringer, Matthew Taylor, Rumina Taylor, Rachel Upthegrove
BACKGROUND: Cognitive problems in people with schizophrenia predict poor functional recovery even with the best possible rehabilitation opportunities and optimal medication. A psychological treatment known as cognitive remediation therapy (CRT) aims to improve cognition in neuropsychiatric disorders, with the ultimate goal of improving functional recovery. Studies suggest that intervening early in the course of the disorder will have the most benefit, so this study will be based in early intervention services, which treat individuals in the first few years following the onset of the disorder...
March 15, 2018: Trials
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