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Michael P Atkinson, Moshe Kress, Roberto Szechtman
BACKGROUND: The US invests considerable effort in searching and interdicting drug-trafficking vessels in the Caribbean and Eastern Pacific regions. While some vessels are indeed interdicted, resulting in confiscation of substantial quantities of drugs, many such vessels manage to avoid detection and arrive safely at their destinations in Central America and Mexico with their drug load intact. The agency in charge of interdicting this traffic, Joint Interagency Task Force South-JIATF-S, sends out both aerial and surface assets for search and interdiction missions...
October 18, 2016: International Journal on Drug Policy
Annika Clamor, Julian Koenig, Julian F Thayer, Tania M Lincoln
Arousal and the way it is coped with are relevant to the emergence of psychotic symptoms. Heart rate variability (HRV) stems from autonomic responses to environmental demands such as stress and is an index of physiological arousal, adaptability, and homeostatic reflexes forming autonomic balance. A randomized-controlled between-subjects trial that compared HRV-biofeedback (BF) to an active relaxation and to a waiting control condition was conducted in a sample with attenuated subclinical psychotic symptoms (N = 84)...
October 11, 2016: Behaviour Research and Therapy
Yi Wang, Yao-Xin Lin, Sheng-Lin Qiao, Hong-Wei An, Yang Ma, Zeng-Ying Qiao, R P Yeshan J Rajapaksha, Hao Wang
Immunotherapy has shown a promising effect for a variety of cancers. However, the immune treatment efficiency of solid tumor is limited due to barely infiltration of immune cells in solid tumor. Researchers realized conversion of tumor supportive macrophages to tumor against ones was an effective method to induce the functional reverse of macrophage and contributed to the subsequent antitumor response. The current challenge in the field is that while making use of cytokines usually coupled with poor-distribution and systemic side effects...
October 4, 2016: Biomaterials
Soraya P A Verstraeten, Hans A M van Oers, Johan P Mackenbach
Decolonization has brought political independence to half the Caribbean states in the last half of the 20th century, while the other states remain affiliated. Previous studies suggested a beneficial impact of affiliated status on population health, which may be mediated by more favorable economic development. We assessed how disparities in life expectancy between currently sovereign and affiliated states developed over time, whether decolonization coincided with changes in life expectancy, and whether decolonization coincided with similar changes in GDP per capita...
September 28, 2016: Social Science & Medicine
Anuja Bandyopadhyay, A Ioana Cristea, Stephanie D Davis, Veda L Ackerman, James E Slaven, Hasnaa E Jalou, Deborah C Givan, Ameet Daftary
RATIONALE: There is a lack of evidence regarding factors associated with failure of tracheostomy decannulation. OBJECTIVES: We aimed to identify characteristics of pediatric patients who fail a tracheostomy decannulation challenge Methods: A retrospective review was performed on all patients who had a decannulation challenge at a tertiary care center from June 2006 to October 2013. Tracheostomy decannulation failure was defined as reinsertion of the tracheostomy tube within 6 months of the challenge...
October 21, 2016: Annals of the American Thoracic Society
Shafay Raheel, Izzat Shbeeb, Cynthia S Crowson, Eric L Matteson
OBJECTIVE: To determine time trends in the incidence and survival of polymyalgia rheumatica (PMR) over a 15 year period in Olmsted County, Minnesota, USA and to examine trends in incidence of PMR in the population by comparing this time period to a previous incidence cohort from the same population base. METHODS: All cases of incident PMR among Olmsted County, Minnesota residents in 2000-2014 were identified to extend the previous 1970-1999 cohort. Detailed review of all individual medical records was performed...
October 21, 2016: Arthritis Care & Research
Alan D Stern, Adeeb H Rahman, Marc R Birtwistle
Mass cytometry offers the advantage of allowing the simultaneous measurement of a greater number parameters than conventional flow cytometry. However, to date, mass cytometry has lacked a reliable alternative to the light scatter properties that are commonly used as a cell size metric in flow cytometry (forward scatter intensity-FSC). Here, we report the development of two plasma membrane staining assays to evaluate mammalian cell size in mass cytometry experiments. One is based on wheat germ agglutinin (WGA) staining and the other on Osmium tetroxide (OsO4 ) staining, both of which have preferential affinity for cell membranes...
October 21, 2016: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
Carlos Molina-Santiago, Zulema Udaondo, María Gómez-Lozano, Soren Molin, Juan Luis Ramos
Pseudomonas putida strains are generally recognized as solvent tolerant, exhibiting varied sensitivity to organic solvents. Pan-genome analysis has revealed that 30% of genes belong to the core-genome of Pseudomonas. Accessory and unique genes confer high degree of adaptability and capabilities for the degradation and synthesis of a wide range of chemicals. For the use of these microbes in bioremediation and biocatalysis, it is critical to understand the mechanisms underlying these phenotypic differences. In this study, RNA-seq analysis compared the short- and long-term responses of the toluene-sensitive KT2440 strain and the highly-tolerant DOT-T1E strain...
October 21, 2016: Environmental Microbiology
Xin Zhong, Bogale Aredo, Yi Ding, Kaiyan Zhang, Cynthia X Zhao, Rafael L Ufret-Vincenty
Purpose: Oxidative stress, partly due to light, has an important role in many retinal diseases, including macular degeneration and retinal dystrophies. The Leu450Met variant of RPE65 is expressed in C57BL/6 and in many genetically modified mice. It confers significant resistance to light induced retinal degeneration (LIRD). Our goal was to develop an effective and efficient method to induce LIRD in resistant mice that would recapitulate mechanisms seen in known models of LIRD. Methods: The retinas of C57BL/6J mice were exposed to light using a murine fundus camera...
October 1, 2016: Investigative Ophthalmology & Visual Science
Shauna-Lee Chai, Jian Zhang, Amy Nixon, Scott Nielsen
Accounting for climate change in invasive species risk assessments improves our understanding of potential future impacts and enhances our preparedness for the arrival of new non-native species. We combined traditional risk assessment for invasive species with habitat suitability modeling to assess risk to biodiversity based on climate change. We demonstrate our method by assessing the risk for 15 potentially new invasive plant species to Alberta, Canada, an area where climate change is expected to facilitate the poleward expansion of invasive species ranges...
2016: PloS One
E Levy, M Byrne, D J Coates, B M Macdonald, S McArthur, S van Leeuwen
The influence of geographic range on species persistence has long been of interest and there is a need for a better understanding of the genetic consequences for species with restricted distributions, particularly with the increasing rate of global species extinctions. However, the genetic effects of restricted range are often confounded by the impacts of population distribution. We compared chloroplast and nuclear genetic diversity and differentiation in two acacias, the restricted, patchily distributed Acacia atkinsiana and the widespread, semi-continuously distributed A...
2016: PloS One
Kerry A Geiler-Samerotte, Yuan O Zhu, Benjamin E Goulet, David W Hall, Mark L Siegal
The protein-folding chaperone Hsp90 has been proposed to buffer the phenotypic effects of mutations. The potential for Hsp90 and other putative buffers to increase robustness to mutation has had major impact on disease models, quantitative genetics, and evolutionary theory. But Hsp90 sometimes contradicts expectations for a buffer by potentiating rapid phenotypic changes that would otherwise not occur. Here, we quantify Hsp90's ability to buffer or potentiate (i.e., diminish or enhance) the effects of genetic variation on single-cell morphological features in budding yeast...
October 2016: PLoS Biology
David C Classen, William Munier, Nancy Verzier, Noel Eldridge, David Hunt, Mark Metersky, Chesley Richards, Yun Wang, P Jeffrey Brady, Amy Helwig, James Battles
The explicit declaration in the landmark 1999 Institute of Medicine report "To Err Is Human" that, in the United States, 44,000 to 98,000 patients die each year as a consequence of "medical errors" gave widespread validation to the magnitude of the patient safety problem and catalyzed a number of U.S. federal government programs to measure and improve the safety of the national healthcare system. After more than 10 years, one of those federal programs, the Medicare Patient Safety Monitoring System (MPSMS), has reached a level of maturity and stability that has made it useful for the consistent measurement of the safety of inpatient care...
October 20, 2016: Journal of Patient Safety
Ethan K Sobol, Anne Barmettler
An 11-year-old healthy girl was noted to have intermittent, spontaneous, and bilateral hemolacria of 14 months' duration. Examination and workup failed to identify an organic or psychogenic cause. The patient was expectantly managed with eventual spontaneous resolution. This report draws attention to this unusual and often concerning clinical entity. The case report is in compliance with the Health Insurance Portability and Accountability Act.
October 20, 2016: Ophthalmic Plastic and Reconstructive Surgery
Keith G Wilson, Adam Heenan, John Kowal, Peter R Henderson, Lachlan A McWilliams, Dyana Castillo
OBJECTIVES: The interpersonal theory of suicide offers a conceptual framework for understanding suicidal ideation (SI) that may be applicable to individuals with chronic pain. The theory emphasizes the importance of two interpersonal constructs as precursors to SI: perceived burdensomeness (the belief that one has become a burden to others) and thwarted belongingness (a lack of social integration or connection). Our objective was to test the interpersonal theory of suicide in people with chronic pain...
October 20, 2016: Clinical Journal of Pain
Rajni Porwal, Anurag Gupta, R C Budhani
The influence of YBa2Cu3O7 (YBCO) superconductor layer (S-layer) with a varying thickness d YBCO  =  20-50 nm on the magnetic coupling between two La0.67Ca0.33MnO3 (LCMO) ferromagnet layers (F-layer, thickness d LCMO  =  50 nm) in F/S/F heterostructures (HSs) was investigated by measuring global magnetization (M) in a temperature (T) range  =  2-300 K and a magnetic field (H) range  =  0-10 kOe. All the HSs were superconducting with the critical temperature (T C) decreasing from  =  78 to 36 K with decrease in d YBCO, whereas the ferromagnetic ordering temperature T M  =  250 K did not change much...
October 21, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
C Steensma, L Loukine, H Orpana, L McRae, J Vachon, F Mo, M Boileau-Falardeau, C Reid, B C Choi
INTRODUCTION: Few studies have evaluated the impact of depression in terms of losses to both premature mortality and health-related quality of life (HRQOL) on the overall population. Health-adjusted life expectancy (HALE) is a summary measure of population health that combines both morbidity and mortality into a single summary statistic that describes the current health status of a population. METHODS: We estimated HALE for the Canadian adult population according to depression status...
October 2016: Health Promotion and Chronic Disease Prevention in Canada
Ana Rolo, Sarah Escuin, Nicholas D E Greene, Andrew J Copp
Neural tube closure is an important morphogenetic event that involves dramatic reshaping of both neural and non-neural tissues. Rho GTPases are key cytoskeletal regulators involved in cell motility and in several developmental processes, and are thus expected to play pivotal roles in neurulation. Here, we discuss 2 recent studies that shed light on the roles of distinct Rho GTPases in different tissues during neurulation. RhoA plays an essential role in regulating actomyosin dynamics in the neural epithelium of the elevating neural folds, while Rac1 is required for the formation of cell protrusions in the non-neural surface ectoderm during neural fold fusion...
October 21, 2016: Small GTPases
Daniela Rupp, Leonie Flückiger, Marcus Adolph, Tais Gorkhover, Maria Krikunova, Jan Philippe Müller, Maria Müller, Tim Oelze, Yevheniy Ovcharenko, Benjamin Röben, Mario Sauppe, Sebastian Schorb, David Wolter, Rolf Mitzner, Michael Wöstmann, Sebastian Roling, Marion Harmand, Rolf Treusch, Mathias Arbeiter, Thomas Fennel, Christoph Bostedt, Thomas Möller
We studied the nanoplasma formation and explosion dynamics of single large xenon clusters in ultrashort, intense x-ray free-electron laser pulses via ion spectroscopy. The simultaneous measurement of single-shot diffraction images enabled a single-cluster analysis that is free from any averaging over the cluster size and laser intensity distributions. The measured charge state-resolved ion energy spectra show narrow distributions with peak positions that scale linearly with final ion charge state. These two distinct signatures are attributed to highly efficient recombination that eventually leads to the dominant formation of neutral atoms in the cluster...
October 7, 2016: Physical Review Letters
Takeshi Suzuki, Rohan Singh, Manfred Bayer, Arne Ludwig, Andreas D Wieck, Steven T Cundiff
Coherent control of a strongly inhomogeneously broadened system, namely, InAs self-assembled quantum dots, is demonstrated. To circumvent the deleterious effects of the inhomogeneous broadening, which usually masks the results of coherent manipulation, we use prepulse two-dimensional coherent spectroscopy to provide a size-selective readout of the ground, exciton, and biexciton states. The dependence on the timing of the prepulse is due to the dynamics of the coherently generated populations. To further validate the results, we performed prepulse polarization dependent measurements and confirmed the behavior expected from selection rules...
October 7, 2016: Physical Review Letters
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