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https://www.readbyqxmd.com/read/28449392/osmotic-stress-decreases-complexity-underlying-the-electrophysiological-dynamic-in-soybean
#1
G F R Saraiva, A S Ferreira, G M Souza
Research rationale: Studies on plant electrophysiology are mostly focused on specific traits of single cells. Inspired by the complexity of the signaling network in plants and by analogies with neurons in human brains, we have sought for evidences of high complexity in the electrical dynamics of plant signaling and a likely relation with environmental cues. Central methods: An EEG-like standard protocol was adopted for high-resolution measurements of the electrical signal in Glycine max seedlings. The signals were continuously recorded in the same plants before and after the osmotic stimuli with a -2 MPa mannitol solution...
April 27, 2017: Plant Biology
https://www.readbyqxmd.com/read/28449293/a-novel-approach-to-study-medical-decision-making-in-the-clinical-setting-the-own-point-of-view-perspective
#2
Thierry Pelaccia, Jacques Tardif, Emmanuel Triby, Bernard Charlin
BACKGROUND: Making diagnostic and therapeutic decisions is a critical activity among physicians. It relies on the ability of physicians to use cognitive processes and specific knowledge in the context of a clinical reasoning. This ability is a core competency in physicians, especially in the field of emergency medicine where the rate of diagnostic errors is high. Studies that explore medical decision-making in an authentic setting are increasing significantly. They are based on the use of qualitative methods which are applied at two separate times: 1) a video recording of the subject's actual activity in an authentic setting and 2) an interview with the subject, supported by the video recording...
April 27, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28448229/breaking-through-the-glass-ceiling-consumers-in-mental-health-organisations-hierarchies
#3
Brett Scholz, Julia Bocking, Brenda Happell
Contemporary mental health policies call for consumers to be engaged in all levels of mental health service planning, implementation, and delivery. Critical approaches to traditional healthcare hierarchies can effectively challenge barriers to better engagement with consumers in mental health organisations. This qualitative exploratory study analyses how particular strategies for consumer leadership facilitate or hinder relationships between consumers and mental health services, and how these strategies influence hierarchical structures...
May 2017: Issues in Mental Health Nursing
https://www.readbyqxmd.com/read/28448002/measurement-of-t-cell-alloreactivity-using-imaging-flow-cytometry
#4
Stephen C Juvet, Sajad Moshkelgosha, Sharon Sanderson, Joanna Hester, Kathryn J Wood, Andrew Bushell
The measurement of immunological reactivity to donor antigens in transplant recipients is likely to be crucial for the successful reduction or withdrawal of immunosuppression. The mixed leukocyte reaction (MLR), limiting dilution assays, and trans-vivo delayed-type hypersensitivity (DTH) assay have all been applied to this question, but these methods have limited predictive ability and/or significant practical limitations that reduce their usefulness. Imaging flow cytometry is a technique that combines the multiparametric quantitative powers of flow cytometry with the imaging capabilities of fluorescent microscopy...
April 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447839/the-whorfian-time-warp-representing-duration-through-the-language-hourglass
#5
Emanuel Bylund, Panos Athanasopoulos
How do humans construct their mental representations of the passage of time? The universalist account claims that abstract concepts like time are universal across humans. In contrast, the linguistic relativity hypothesis holds that speakers of different languages represent duration differently. The precise impact of language on duration representation is, however, unknown. Here, we show that language can have a powerful role in transforming humans' psychophysical experience of time. Contrary to the universalist account, we found language-specific interference in a duration reproduction task, where stimulus duration conflicted with its physical growth...
April 27, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28445774/voxresnet-deep-voxelwise-residual-networks-for-brain-segmentation-from-3d-mr-images
#6
REVIEW
Hao Chen, Qi Dou, Lequan Yu, Jing Qin, Pheng-Ann Heng
Segmentation of key brain tissues from 3D medical images is of great significance for brain disease diagnosis, progression assessment and monitoring of neurologic conditions. While manual segmentation is time-consuming, laborious, and subjective, automated segmentation is quite challenging due to the complicated anatomical environment of brain and the large variations of brain tissues. We propose a novel voxelwise residual network (VoxResNet) with a set of effective training schemes to cope with this challenging problem...
April 23, 2017: NeuroImage
https://www.readbyqxmd.com/read/28445241/serum-neutrophil-gelatinase-associated-lipocalin-a-diagnostic-marker-in-pediatric-sepsis
#7
Nagwan Yossery Saleh, Wafaa Moustafa M Abo El Fotoh, Mahmoud A El-Hawy
OBJECTIVES: Sepsis is a life-threatening condition that arises when the response of the body to infection injures its own tissues and organs. The early prediction of sepsis by current clinical and laboratory methods remains inadequate. Serum neutrophil gelatinase-associated lipocalin level is increased in sepsis irrespective of renal dysfunction. Therefore, we aimed to correlate the serum neutrophil gelatinase-associated lipocalin value determined at admission with clinical progression and severity of disease in critically ill children and to declare its role as a potential diagnostic and prognostic marker for sepsis in critically ill children in the emergency department...
April 25, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28445231/the-effects-of-multi-day-vs-single-pre-exercise-nitrate-supplement-dosing-on-simulated-cycling-time-trial-performance-and-skeletal-muscle-oxygenation
#8
Edward Jo, Michelle Fischer, Alexandra T Auslander, Alan Beigarten, Bruce Daggy, Ken Hansen, Lisa Kessler, Adam Osmond, Hong Wang, Rachel Wes
A transient augmentation in the metabolic efficiency of skeletal muscle is the purported basis for dietary nitrate supplementation amongst competitive and recreational athletes alike. Previous studies support the ergogenic effects of nitrate supplementation as findings indicated improved microvascular blood flow, exercise economy, and performance with relatively short-term supplementation. As with most ergogenic aids, the optimum duration of supplementation prior to performance or competition, i.e. loading phase, is a critical determinant for efficacy...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28445214/teaching-the-social-determinants-of-health-a-path-to-equity-or-a-road-to-nowhere
#9
Malika Sharma, Andrew D Pinto, Arno K Kumagai
Medical schools are increasingly called to include social responsibility in their mandates. As such, they are focusing their attention on the social determinants of health (SDOH) as key drivers in the health of the patients and communities they serve. However, underlying this emphasis on SDOH is the assumption that teaching medical students about SDOH will lead future physicians to take action to help achieve health equity. There is little evidence to support this belief. In many ways, the current approach to SDOH within medical education positions the SDOH as "facts to be known" rather than as "conditions to be challenged and changed...
April 25, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28445078/effects-of-high-intensity-interval-training-on-canoeing-performance
#10
Ming-Ta Yang, Mien-Mien Lee, Shu-Ching Hsu, Kuei-Hui Chan
The purpose of this study was to compare the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) utilizing a canoeing ergometer on endurance determinants, as well as aerobic and anaerobic performances among flat-water canoeists. Fourteen well-trained male flat-water canoeists were divided into an HIIT group or an MICT group. All subjects performed a continuous graded exercise test (GXT) and three fixed-distance (200, 500, and 1000 m) performance tests on a canoeing ergometer to determine canoeing economy, peak oxygen uptake (VO2peak), and power at VO2peak, and to calculate the critical velocity (CV) and anaerobic work capacity before and after the training programmes...
April 26, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28444717/effect-of-donor-strength-and-bulk-on-thieno-3-4-b-pyrazine-based-panchromatic-dyes-in-dscs
#11
Nalaka P Liyanage, Hammad Cheema, Alexandra R Baumann, Alexa R Zylstra, Jared Heath Delcamp
NIR absorbing organic dyes are critically needed in dye-sensitized solar cells (DSCs). Thieno[3,4-b]pyrazine (TPz) based dyes can access the near-infrared (NIR) spectral region and show power conversion efficiencies (PCEs) of up to 8.1% with sunlight being converted at wavelengths up to 800 nm for 17.6 mA/cm2 of photocurrent in a co-sensitized DSC device. Precisely controlling dye excited-state energies is critical for good performances in NIR DSCs. Strategies to control TPz dye energetics with stronger donor groups and TPz substituent choice are evaluated in this manuscript...
April 25, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28444036/theoretical-reflections-on-governance-in-health-regions
#12
Nilo Bretas, Helena Eri Shimizu
This article analyzes governance in health regions, through the contributions of two studies: one on a governance model and the other on duties in the management of public policies networks. The former conducted a meta-analysis of 137 case studies in the literature on collaborative governance aimed at preparing an explanatory and analytical model. Authors identified critical variables that will influence the results: a previous history of conflict or cooperation, incentives for participation, power imbalances, leadership and institutional design...
April 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28443837/real-time-plasmonic-qpcr-how-fast-is-ultra-fast-30-cycles-in-54-seconds
#13
Philip J R Roche, Mohamed Najih, Seung S Lee, Lenore K Beitel, Matthew L Carnevale, Miltiadis Paliouras, Andrew G Kirk, Mark A Trifiro
Polymerase Chain Reaction (PCR) is a critical tool for biological research investigators but recently it also has been making a significant impact in clinical, veterinary and agricultural applications. Plasmonic PCR, which employs the very efficient heat transfer of optically irradiated metallic nanoparticles, is a simple and powerful methodology to drive PCR reactions. The scalability of next generation plasmonic PCR technology will introduce various forms of PCR applications ranging from small footprint portable point of care diagnostic devices to large footprint central laboratory multiplexing devices...
April 26, 2017: Analyst
https://www.readbyqxmd.com/read/28442740/deciphering-the-mode-of-action-of-cell-wall-inhibiting-antibiotics-using-metabolic-labeling-of-growing-peptidoglycan-in-streptococcus-pyogenes
#14
Atsushi Sugimoto, Asuka Maeda, Kaori Itto, Hirokazu Arimoto
Because of the scanty pipeline of antibiotics newly obtained from nature, chemical modification of established drugs is one of the major streams of current antibacterial research. Intuitive and easy-to-use assays are critical for identifying drug candidates with novel modes of action. In this study, we demonstrated that metabolic fluorescent staining of growing cell walls is a powerful tool for mode-of-action analyses of antibiotics using Streptococcus pyogenes. A set of major cell-wall-inhibiting antibiotics (bacitracin, D-cycloserine, flavomycin, oxacillin, ramoplanin, and vancomycin) was employed to validate the potential of the assay...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28442606/the-exit-strategy-an-approach-for-identifying-bacterial-proteins-exported-during-host-infection
#15
E F Perkowski, K E Zulauf, D Weerakoon, J D Hayden, T R Ioerger, D Oreper, S M Gomez, J C Sacchettini, M Braunstein
Exported proteins of bacterial pathogens function both in essential physiological processes and in virulence. Past efforts to identify exported proteins were limited by the use of bacteria growing under laboratory (in vitro) conditions. Thus, exported proteins that are exported only or preferentially in the context of infection may be overlooked. To solve this problem, we developed a genome-wide method, named EXIT (exported in vivotechnology), to identify proteins that are exported by bacteria during infection and applied it to Mycobacterium tuberculosis during murine infection...
April 25, 2017: MBio
https://www.readbyqxmd.com/read/28441115/neuromodulation-of-innate-behaviors-in-drosophila
#16
Susy M Kim, Chih-Ying Su, Jing W Wang
Animals are born with a rich repertoire of robust behaviors that are critical for their survival. However, innate behaviors are also highly adaptable to an animal's internal state and external environment. Neuromodulators, including biogenic amines, neuropeptides, and hormones, are released to signal changes in animals' circumstances and serve to reconfigure neural circuits. This circuit flexibility allows animals to modify their behavioral responses according to environmental cues, metabolic demands, and physiological states...
April 24, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28440999/-epistemic-injustice-during-the-medical-education-process-in-the-hospital-context
#17
Carolina Consejo-Y Chapela, Carlos Alfonso Viesca-Treviño
BACKGROUND: The educational model adopted by the Universidad Nacional Autónoma de México (UNAM) Faculty of Medicine is constructivist; it is a model based on competence development. It aims to provide learning environments that incorporate real activities (it helps the students to develop social negotiation skills, as part of their integral learning; it encourages them to take a critical and reflexive approach; and it is also a student-centered model). However, many challenges arise when this model is implemented in the context of hospital environments...
May 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28440060/a-practical-approach-in-bioreactor-scale-up-and-process-transfer-using-a-combination-of-constant-p-v-and-vvm-as-the-criterion
#18
Sen Xu, Linda Hoshan, Rubin Jiang, Balrina Gupta, Eric Brodean, Kristin O'Neill, T Craig Seamans, John Bowers, Hao Chen
Bioreactor scale-up is a critical step in the production of therapeutic proteins such as monoclonal antibodies (MAbs). With the scale-up criterion such as similar power input per volume or O2 volumetric mass transfer coefficient (kL a), adequate oxygen supply and cell growth can be largely achieved. However, CO2 stripping in the growth phase is often inadequate. This could cascade down to increased base addition and osmolality, as well as residual lactate increase and compromised production and product quality...
April 25, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28439867/mapping-protein-protein-interactions-using-affinity-purification-and-mass-spectrometry
#19
Chin-Mei Lee, Christopher Adamchek, Ann Feke, Dmitri A Nusinow, Joshua M Gendron
The mapping of protein-protein interaction (PPI) networks and their dynamics are crucial steps to deciphering the function of a protein and its role in cellular pathways, making it critical to have comprehensive knowledge of a protein's interactome. Advances in affinity purification and mass spectrometry technology (AP-MS) have provided a powerful and unbiased method to capture higher-order protein complexes and decipher dynamic PPIs. However, the unbiased calling of nonspecific interactions and the ability to detect transient interactions remains challenging when using AP-MS, thereby hampering the detection of biologically meaningful complexes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28439852/stevens-johnson-syndrome-and-toxic-epidermal-necrolysis-a-concise-review-with-a-comprehensive-summary-of-therapeutic-interventions-emphasizing-supportive-measures
#20
REVIEW
Jeremy A Schneider, Philip R Cohen
INTRODUCTION: Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are two of the most severe dermatologic conditions occurring in the inpatient setting. There is a lack of consensus regarding appropriate management of SJS and TEN. PURPOSE: The scientific literature pertaining to SJS and TEN (subsequently referred to as SJS/TEN) is summarized and assessed. In addition, an interventional approach for the clinician is provided. METHODS: PubMed was searched with the key words: corticosteroids, cyclosporine, etanercept, intravenous immunoglobulin, Stevens-Johnson syndrome, and toxic epidermal necrolysis...
April 24, 2017: Advances in Therapy
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