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Daniel W Bradford, Joseph Goulet, Marcia Hunt, Natasha C Cunningham, Rani Hoff
OBJECTIVE: Individuals with serious mental illness have increased mortality relative to those without these illnesses. Although cancer is a leading cause of death, few studies have evaluated potential disparities relative to mortality for individuals with serious mental illness who are diagnosed with cancer. In this study, we evaluated mortality after diagnosis of a common malignancy (lung cancer) in a prototypical serious mental illness (schizophrenia). METHODS: Using administrative data in the Veterans Affairs system, we identified 34,664 individuals who were diagnosed with lung cancer between October 1, 2001, and September 30, 2005...
October 25, 2016: Journal of Clinical Psychiatry
Clayton W Nuelle, Jeffrey L Milles, Ferris M Pfeiffer, James P Stannard, Patrick A Smith, Mauricio Kfuri, James L Cook
No surgical technique recreates native posterior cruciate ligament (PCL) biomechanics. We compared the biomechanics of five different PCL reconstruction techniques versus the native PCL. Cadaveric knees (n = 20) were randomly assigned to one of five reconstruction techniques: Single bundle all-inside arthroscopic inlay, single bundle all-inside suspensory fixation, single bundle arthroscopic-assisted open onlay (SB-ONL), double bundle arthroscopic-assisted open inlay (DB-INL), and double bundle all-inside suspensory fixation (DB-SUSP)...
October 25, 2016: Journal of Knee Surgery
Sten Grillner, Brita Robertson
The lamprey belongs to the phylogenetically oldest group of vertebrates that diverged from the mammalian evolutionary line 560 million years ago. A comparison between the lamprey and mammalian basal ganglia establishes a detailed similarity regarding its input from cortex/pallium and thalamus, as well as its intrinsic organisation and projections of the output nuclei. This means that the basal ganglia circuits now present in rodents and primates most likely had evolved already at the dawn of vertebrate evolution...
October 24, 2016: Current Biology: CB
Martin Pekař, Wendy U Dittmer, Nenad Mihajlović, Gijs van Soest, Nico de Jong
The information in an ultrasound image depends on the frequency that is used. In a clinical examination it may therefore be beneficial to generate ultrasound images acquired at multiple frequencies, which is difficult to achieve with conventional transducers. Capacitive micromachined ultrasonic transducers (CMUTs) offer a frequency response that is tunable by the bias voltage. In this study we investigate this frequency tunability for ultrasonic imaging. We characterized a CMUT array operated at bias voltages up to three times higher than the collapse-voltage...
October 6, 2016: Ultrasonics
Amanda Elton, Christopher T Smith, Michael H Parrish, Charlotte A Boettiger
Excessively choosing immediate over larger future rewards, or delay discounting (DD), associates with multiple clinical conditions. Individual differences in DD likely depend on variations in the activation of and functional interactions between networks, representing possible endophenotypes for associated disorders, including alcohol use disorders. Numerous fMRI studies have probed the neural bases of DD, but investigations of large-scale networks remain scant. We addressed this gap by testing whether activation within large-scale networks during Now/Later decision-making predicts individual differences in DD...
October 25, 2016: Journal of Cognitive Neuroscience
Benjamin W Mooneyham, Michael D Mrazek, Alissa J Mrazek, Kaita L Mrazek, Dawa T Phillips, Jonathan W Schooler
During tasks that require continuous engagement, the mind alternates between mental states of focused attention and mind-wandering. Existing research has assessed the functional connectivity of intrinsic brain networks underlying the experience and training of these mental states using "static" approaches that assess connectivity across an entire task. To disentangle the functional connectivity between brain regions as the mind fluctuates between discrete brain states, we employed a dynamic functional connectivity approach that characterized brain activity using a sliding window...
October 25, 2016: Journal of Cognitive Neuroscience
Ricardo Vega Monroy, Guillermo Salazar Cohen
In this work we present a theory, which is able to explain the non-monotonic decreasing behavior (observed in experimental data(1-11)) of the graphene terahertz conductivity with the increase of the field frequency. In this connection, the displacement of the structure of topological states inside the energy band gap, which appears in graphene due to the strong photon-electron coupling, and the narrowing of this gap, as result of electron transitions from bound photon-dressed electron states to extended states outside the energy gap driven by the field frequency, lead to a periodic change of singularities near the edge of the band gap, resulting in subtle quantum oscillations of the dynamical terahertz conductivity...
October 25, 2016: Nano Letters
Małgorzata Stępień, Katarzyna Piwowarow, Mirosław P Czarkowski
OBJECTIVE: The aim of the study was to assess the epidemiological situation of hepatitis B in Poland in 2014 in comparison with the previous years. MATERIAL AND METHODS: The evaluation of the epidemiological situation was carried out on a basis of analysis of data from case-based reports on acute hepatitis B registered by sanitary and epidemiological stations, aggregate data derived from annual bulletins “Infectious diseases and poisonings in Poland”, data from annual bulletin “Vaccinations in Poland” and data on locally registered HBsAg carriers...
2016: Przegla̧d Epidemiologiczny
Angelika Drynda, Bożena Obmińska-Mrukowicz, Ewa Zaczyńska, Michał Zimecki, Iwona Kochanowska, Stanisław Ryng, Marcin Mączyński
Isoxazoles are an important class of compounds of potential therapeutic value. The aim of this study was to determine immunotropic effects of 5-amino-3-methyl-4-isoxazolecarboxylic acid hydrazide derivatives on spontaneous and mitogen-induced lymphocyte proliferation in young and old mice, cytokine production by peritoneal cells as well as possible mechanism of action in a model of Jurkat cells. Three month and thirteen month old BALB/c mice were used as donors of the cells from a thymus, a spleen, mesenteric lymph nodes and a peritoneal cavity...
October 25, 2016: Chemical Biology & Drug Design
Jeffrey R Hawley, Prateek Kalra, Xiaokui Mo, Brian Raterman, Lisa D Yee, Arunark Kolipaka
PURPOSE: Previous studies of breast MR elastography (MRE) evaluated the technique at magnetic field strengths of 1.5 Tesla (T) with the breast in contact with the driver. The aim of this study is to evaluate breast stiffness measurements and their reproducibility using a soft sternal driver at 3T and compare the results with qualitative measures of breast density. MATERIALS AND METHODS: Twenty-two healthy volunteers each underwent two separate breast MRE scans in a 3T MRI...
October 25, 2016: Journal of Magnetic Resonance Imaging: JMRI
Katharina Wimmer, Thorsten Rosenbaum, Ludwine Messiaen
Constitutional mismatch repair (MMR) deficiency (CMMRD) is a rare childhood cancer susceptibility syndrome resulting from biallelic germline loss-of-function mutations in one of the MMR genes. Individuals with CMMRD have a high risk to develop a broad spectrum of malignancies and frequently display features reminiscent of neurofibromatosis type 1 (NF1). Evaluation of the clinical findings of genetically proven CMMRD patients shows that not only multiple café-au-lait macules but any of the diagnostic features of NF1 may be present in a CMMRD patient...
October 25, 2016: Clinical Genetics
J Pingel, E M Bartels, J B Nielsen
Muscle contractures are common in patients with central motor lesions, but the mechanisms responsible for the development of contractures are still unclear. Increased or decreased neural activation, protracted placement of a joint with the muscle in a short position and muscle atrophy have been suggested to be involved, but none of these mechanisms are sufficient to explain the development of muscle contractures alone. Here we propose that changes in tissue homeostasis in the neuro-muscular-tendon-connective tissue complex is at the heart of the development of contractures, and that an integrated physiological understanding of the interaction between neural, mechanical and metabolic factors, as well as genetic and epigenetic factors, is necessary in order to unravel the mechanisms that result in muscle contractures...
October 24, 2016: Journal of Physiology
Alex I Wiesman, Elizabeth Heinrichs-Graham, Nathan M Coolidge, James E Gehringer, Max J Kurz, Tony W Wilson
Sensory gating (SG) is a phenomenon in which neuronal responses to subsequent similar stimuli are weaker, and is thought to be an important mechanism for preventing excessive environmental stimulation from overloading shared neural resources. Although gating has been demonstrated in multiple sensory systems, the neural dynamics and developmental trajectory underlying SG remain poorly understood. Herein, we adopt a data-driven approach to map the spectro-temporal amplitude and functional connectivity (FC) dynamics that support gating in the somatosensory system (somato-SG) in healthy children and adolescents using magnetoencephalography (MEG)...
October 25, 2016: Journal of Physiology
Maxime Wc Rousseaux, Maria de Haro, Cristian A Lasagna-Reeves, Antonia De Maio, Jeehye Park, Paymaan Jafar-Nejad, Ismael Al-Ramahi, Ajay Sharma, Lauren See, Nan Lu, Luis Vilanova-Velez, Tiemo J Klisch, Thomas F Westbrook, Juan C Troncoso, Juan Botas, Huda Y Zoghbi
Several neurodegenerative diseases are driven by the toxic gain-of-function of specific proteins within the brain. Elevated levels of alpha-synuclein (α-Syn) appear to drive neurotoxicity in Parkinson's disease (PD); neuronal accumulation of tau is a hallmark of Alzheimer's disease (AD); and their increased levels cause neurodegeneration in humans and model organisms. Despite the clinical differences between AD and PD, several lines of evidence suggest that α-Syn and tau overlap pathologically. The connections between α-Syn and tau led us to ask whether these proteins might be regulated through a shared pathway...
October 25, 2016: ELife
Xueling Suo, Du Lei, Fuqin Chen, Min Wu, Lei Li, Ling Sun, Xiaoli Wei, Hongyan Zhu, Lingjiang Li, Graham J Kemp, Qiyong Gong
Purpose To use diffusion-tensor (DT) imaging and graph theory approaches to explore the brain structural connectome in pediatric posttraumatic stress disorder (PTSD). Materials and Methods This study was approved by the relevant research ethics committee, and all participants' parents or guardians provided informed consent. Twenty-four pediatric patients with PTSD and 23 control subjects exposed to trauma but without PTSD were recruited after the 2008 Sichuan earthquake. The structural connectome was constructed by using DT imaging tractography and thresholding the mean fractional anisotropy of 90 brain regions to yield 90 × 90 partial correlation matrixes...
October 25, 2016: Radiology
M H Nagtegaal, K Goethals, G Meynen
So far, it is not known what costs and benefits are connected with the tbs-measure, a measure that involves a mandatory treatment programme for forensic psychiatric patients.<br/> AIM: To explore the costs and benefits that the tbs-measure has on society, on other important stakeholders such as victims and/or next-of-kin and the forensic psychiatric patients themselves. <br/> METHOD: We studied the relevant literature.<br/> RESULTS: The average costs of the tbs-treatment programme are 1.5 million euros...
2016: Tijdschrift Voor Psychiatrie
Tian Tian, Linying Guo, Jing Xu, Shun Zhang, Jingjing Shi, Chengxia Liu, Yuanyuan Qin, Wenzhen Zhu
Peripheral nerve damage does not fully explain the pathogenesis of trigeminal neuralgia (TN). Central nervous system changes can follow trigeminal nerve dysfunction. We hypothesized that brain white matter and functional connectivity changes in TN patients were involved in pain perception, modulation, the cognitive-affective system, and motor function; moreover, changes in functional reorganization were correlated with white matter alterations. Twenty left TN patients and twenty-two healthy controls were studied...
October 25, 2016: Scientific Reports
Jie Zhou, Yong Zou, Shuguang Guan, Zonghua Liu, S Boccaletti
Networks whose structure of connections evolves in time constitute a big challenge in the study of synchronization, in particular when the time scales for the evolution of the graph topology are comparable with (or even longer than) those pertinent to the units' dynamics. We here focus on networks with a slow-switching structure, and show that the necessary conditions for synchronization, i.e. the conditions for which synchronization is locally stable, are determined by the time average of the largest Lyapunov exponents of transverse modes of the switching topologies...
October 25, 2016: Scientific Reports
Z W Wu, F X Li, C W Huo, M Z Li, W H Wang, K X Liu
The temperature evolution of icosahedral medium-range order formed by interpenetrating icosahedra in CuZr metallic glassforming liquids was investigated via molecular dynamics simulations. Scaling analysis based on percolation theory was employed, and it is found that the size distribution of clusters formed by the central atoms of icosahedra at various temperatures follows a very good scaling law with the cluster number density scaled by S(-τ) and the cluster size S scaled by |1 - Tc/T|(-1/σ), respectively...
October 25, 2016: Scientific Reports
K Nakamura, C J Brainerd
It has recently been found that episodic memory displays analogues of the well-known disjunction and conjunction fallacies of probability judgement. The aim of the present research was, for the first time, to study these memory fallacies together under the same conditions, and test theoretical predictions about the reasons for each. The focus was on predictions about the influence of semantic gist, target versus context recollection, and proactive versus retroactive interference. Disjunction and conjunction fallacies increased in conditions in which subjects were able to form semantic connections among list words...
October 25, 2016: Memory
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