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https://www.readbyqxmd.com/read/28918418/new-aspects-in-the-pathomechanism-of-diseases-of-civilization-particularly-psychosomatic-disorders-part-1-theoretical-background-of-a-hypothesis
#1
Andras Sikter, Zoltan Rihmer, Roberto de Guevara
The stress defence-cascade is mostly not biphasic as Cannon thought, the sympathicotonic stress response is preceded by a vagotonic phase called freeze response. Alteration of the carbon dioxide level plays an important role during defence-cascade as its changes interfere with stress hormones, e.g. with catecholamines, thus affecting the degree of arousal. In case of humans, learned behaviour dominates instead of instinctive, so the fight-or-flight often lags; the consequence can be persistent hypocapnia or hypercapnia...
June 2017: Neuropsychopharmacologia Hungarica
https://www.readbyqxmd.com/read/28916948/viewer-discretion-advised-is-youtube-a-friend-or-foe-in-surgical-education
#2
H Alejandro Rodriguez, Monica T Young, Hope T Jackson, Brant K Oelschlager, Andrew S Wright
BACKGROUND: In the current era, trainees frequently use unvetted online resources for their own education, including viewing surgical videos on YouTube. While operative videos are an important resource in surgical education, YouTube content is not selected or organized by quality but instead is ranked by popularity and other factors. This creates a potential for videos that feature poor technique or critical safety violations to become the most viewed for a given procedure. METHODS: A YouTube search for "Laparoscopic cholecystectomy" was performed...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916140/an-integrative-interdisciplinary-perspective-on-social-dominance-hierarchies
#3
REVIEW
Chen Qu, Romain Ligneul, Jean-Baptiste Van der Henst, Jean-Claude Dreher
In the course of evolution, social dominance has been a strong force shaping the organization of social systems in many species. Individuals with a better ability to represent social dominance relationships and to adapt their behavior accordingly usually achieve better access to resources, hence providing benefits in terms of reproduction, health, and wellbeing. Understanding how and to what extent our brains are affected by social dominance requires interdisciplinary efforts. Here, we integrate findings from social neuroscience, evolutionary biology, and developmental psychology to highlight how social hierarchies are learned and represented in primates...
September 12, 2017: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/28914701/elevated-postvoid-residual-urine-volume-identifying-risk-factors-and-predicting-resolution-in-women-with-pelvic-organ-prolapse
#4
Amanda Ulrich, Patricia Davis, Paul Tulikangas, David M OʼSullivan, Katie Propst
OBJECTIVES: This study aims to identify risk factors for elevated preoperative postvoid residual (PVR) and persistently elevated postoperative PVR and to evaluate the resolution rate of elevated PVR urine volume in patients undergoing reconstructive surgery for pelvic organ prolapse (POP). METHODS: This was a retrospective cohort study comparing 50 women with elevated preoperative PVR (≥100 mL) and 50 women with normal PVR (<100 mL). Preoperative demographic, physical examination, urodynamic data, type of surgery performed, and postoperative trial of void data were collected...
September 13, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28914387/joint-stimulus-control-in-a-temporal-discrimination-task
#5
Carlos Pinto, Inês Fortes, Armando Machado
The ability to identify stimuli that signal important events is fundamental for an organism to adapt to its environment. In the present paper, we investigated how more than one stimulus could be used jointly to learn a temporal discrimination task. Ten pigeons were exposed to a symbolic matching-to-sample procedure with three durations as samples (2, 6, and 18 s of keylight) and two colors as comparisons (red and green hues). A 30-s intertrial interval (ITI), illuminated with a houselight, separated the trials...
September 15, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28912929/student-misconceptions-about-plants-a-first-step-in-building-a-teaching-resource
#6
April N Wynn, Irvin L Pan, Elizabeth E Rueschhoff, Maryann A B Herman, E Kathleen Archer
Plants are ubiquitous and found in virtually every ecosystem on Earth, but their biology is often poorly understood, and inaccurate ideas about how plants grow and function abound. Many articles have been published documenting student misconceptions about photosynthesis and respiration, but there are substantially fewer on such topics as plant cell structure and growth; plant genetics, evolution, and classification; plant physiology (beyond energy relations); and plant ecology. The available studies of misconceptions held on those topics show that many are formed at a very young age and persist throughout all educational levels...
2017: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28912796/a-low-cost-imaging-method-for-the-temporal-and-spatial-colorimetric-detection-of-free-amines-on-maize-root-surfaces
#7
Truc H Doan, Tu A Doan, Michael J Kangas, AdreAnna E Ernest, Danny Tran, Christina L Wilson, Andrea E Holmes, Erin L Doyle, Tessa L Durham Brooks
Plant root exudates are important mediators in the interactions that occur between plants and microorganisms in the soil, yet much remains to be learned about spatial and temporal variation in their production. This work outlines a method utilizing a novel colorimetric paper to detect spatial and temporal changes in the production of nitrogen-containing compounds on the root surface. While existing methods have made it possible to conduct detailed analysis of root exudate composition, relatively less is known about where in the root system exudates are produced and how this localization changes as the root grows...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28911273/memory-enhancement-of-fresh-ginseng-on-deficits-induced-by-chronic-restraint-stress-in-mice
#8
Liming Dong, Yi Wang, Jingwei Lv, Hongxia Zhang, Ning Jiang, Cong Lu, Pan Xu, Xinmin Liu
OBJECTIVES: Chronic stress exposure can disrupt the balance of organisms, result in learning and memory impairments and induce oxidative stress. However, there is a lack of safe and effective long-term therapeutic agents for stress-related injuries. Fresh ginseng (FG), an unprocessed raw root of ginseng, has antioxidant and neuroprotective activities and has been used as functional health food in Asian countries for many years. The aim of this study was to verify the protective effects of FG on chronic restraint stress (CRS)-induced learning and memory impairments as well as oxidative stress damage in mice...
September 15, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28910696/tissue-microstructure-estimation-using-a-deep-network-inspired-by-a-dictionary-based-framework
#9
Chuyang Ye
Diffusion magnetic resonance imaging (dMRI) captures the anisotropic pattern of water displacement in the neuronal tissue and allows noninvasive investigation of the complex tissue microstructure. A number of biophysical models have been proposed to relate the tissue organization with the observed diffusion signals, so that the tissue microstructure can be inferred. The Neurite Orientation Dispersion and Density Imaging (NODDI) model has been a popular choice and has been widely used for many neuroscientific studies...
September 6, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28910624/a-sensorimotor-circuit-in-mouse-cortex-for-visual-flow-predictions
#10
Marcus Leinweber, Daniel R Ward, Jan M Sobczak, Alexander Attinger, Georg B Keller
The cortex is organized as a hierarchical processing structure. Feedback from higher levels of the hierarchy, known as top-down signals, have been shown to be involved in attentional and contextual modulation of sensory responses. Here we argue that top-down input to the primary visual cortex (V1) from A24b and the adjacent secondary motor cortex (M2) signals a prediction of visual flow based on motor output. A24b/M2 sends a dense and topographically organized projection to V1 that targets most neurons in layer 2/3...
September 13, 2017: Neuron
https://www.readbyqxmd.com/read/28906450/obstacle-recognition-based-on-machine-learning-for-on-chip-lidar-sensors-in-a-cyber-physical-system
#11
Fernando Castaño, Gerardo Beruvides, Rodolfo E Haber, Antonio Artuñedo
Collision avoidance is an important feature in advanced driver-assistance systems, aimed at providing correct, timely and reliable warnings before an imminent collision (with objects, vehicles, pedestrians, etc.). The obstacle recognition library is designed and implemented to address the design and evaluation of obstacle detection in a transportation cyber-physical system. The library is integrated into a co-simulation framework that is supported on the interaction between SCANeR software and Matlab/Simulink...
September 14, 2017: Sensors
https://www.readbyqxmd.com/read/28905423/who-standards-for-biotherapeutics-including-biosimilars-an-example-of-the-evaluation-of-complex-biological-products
#12
REVIEW
Ivana Knezevic, Elwyn Griffiths
The most advanced regulatory processes for complex biological products have been put in place in many countries to provide appropriate regulatory oversight of biotherapeutic products in general, and similar biotherapeutics in particular. This process is still ongoing and requires regular updates to national regulatory requirements in line with scientific developments and up-to-date standards. For this purpose, strong knowledge of and expertise in evaluating biotherapeutics in general and similar biotherapeutic products, also called biosimilars, in particular is essential...
September 14, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28903903/utilization-of-caenorhabditis-elegans-in-laboratory-teaching-of-genetics
#13
Xiao-Ying Ma, Ying-Lan Zhao, Fang-Xing Jia, Ya-Kun Song, Yu-Cong Xie
Caenorhabditis elegans is one of the most important model organisms in the study of biology. It is ideal for laboratory teaching due to its short life cycle and low cost. It enriches the teaching content and can motivate students' interest of learning. In this article, we have shown cased C. elegans for the observation of life cycle and mating, as well as the investigation of single nucleotide polymorphism (SNP) and RNA interfere. In addition, we also discuss the details of the experimental design, basic requirement, preparations and related information...
August 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28903723/domains-associated-with-successful-quality-improvement-in-healthcare-a-nationwide-case-study
#14
Aleidis Skard Brandrud, Bjørnar Nyen, Per Hjortdahl, Leiv Sandvik, Gro Sævil Helljesen Haldorsen, Maria Bergli, Eugene C Nelson, Michael Bretthauer
BACKGROUND: There is a distinct difference between what we know and what we do in healthcare: a gap that is impairing the quality of the care and increasing the costs. Quality improvement efforts have been made worldwide by learning collaboratives, based on recognized continual improvement theory with limited scientific evidence. The present study of 132 quality improvement projects in Norway explores the conditions for improvement from the perspectives of the frontline healthcare professionals, and evaluates the effectiveness of the continual improvement method...
September 13, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28902477/food-marketing-to-children-in-canada-a-settings-based-scoping-review-on-exposure-power-and-impact
#15
Rachel Prowse
INTRODUCTION: Food marketing impacts children's food knowledge, behaviours and health. Current regulations in Canada focus on restricting promotional aspects of food marketing with little-to-no consideration of the places where children experience food. Understanding food marketing in children's everyday settings is necessary to protect children. This scoping review describes the current literature on food marketing to children in Canada by setting. METHODS: The author searched databases for Canadian research on children's exposure to food marketing, and the power and impact of food marketing to children (2-17 years) across settings, and on how current regulations may mediate the effect of food marketing on children...
September 2017: Health Promotion and Chronic Disease Prevention in Canada
https://www.readbyqxmd.com/read/28902270/public-health-response-and-lessons-learned-from-the-2014-chikungunya-epidemic-in-grenada
#16
Martin S Forde, Francis Martin, George Mitchell, Satesh Bidaisee
In June 2014, the first cases of chikungunya virus (CHIKV) were diagnosed on the island of Carriacou, part of the tri-island state of Grenada. In the three months that followed, CHIKV spread rapidly, with conservative estimates of the population infected of at least 60%. Multiple challenges were encountered in the battle to manage the spread and impact of this high-attack rate virus, including 1) limited indigenous laboratory diagnostic capabilities; 2) an under-resourced health care system; 3) a skeptical general public, hesitant to accept facts about the origin and mode of transmission of the new virus; and 4) resistance to the vector control strategies used...
August 21, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28899819/information-content-of-dendritic-spines-after-motor-learning
#17
Davide Viggiano, Luisa Speranza, Marianna Crispino, Gian Carlo Bellenchi, Umberto di Porzio, Attilio Iemolo, Elvira De Leonibus, Floriana Volpicelli, Carla Perrone-Capano
Dendritic spines, small protrusions emerging from the dendrites of most excitatory synapses in the mammalian brain, are highly dynamic structures and their shape and number is continuously modulated by memory formation and other adaptive changes of the brain. In this study, using a behavioral paradigm of motor learning, we applied the non-linear analysis of dendritic spines to study spine complexity along dendrites of cortical and subcortical neural systems, such as the basal ganglia, that sustain important motor learning processes...
September 9, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28899811/group-selection-in-behavioral-evolution
#18
REVIEW
Howard Rachlin
How may patterns of behavior change over an organism's lifetime? The answer is that they evolve (behavioral evolution) as species evolve over generations (biological evolution). In biological evolution, under certain conditions, groups of cooperative organisms would be selected over groups of non-cooperative organisms, even when cooperation imposes a cost to individuals. Analogously, in behavioral evolution, patterns of acts may be selected even when each individual act in the pattern is costly. Although there is considerable debate among biologists whether the conditions for group selection are met in biological evolution, it is argued here that they are met in behavioral evolution (as well as in cultural evolution)...
September 9, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28895493/comparative-health-system-performance-in-six-middle-income-countries-cross-sectional-analysis-using-world-health-organization-study-of-global-ageing-and-health
#19
COMPARATIVE STUDY
Riyadh Alshamsan, John Tayu Lee, Sangeeta Rana, Hasan Areabi, Christopher Millett
Objective To assess and compare health system performance across six middle-income countries that are strengthening their health systems in pursuit of universal health coverage. Design Cross-sectional analysis from the World Health Organization Study on global AGEing and adult health, collected between 2007 and 2010. Setting Six middle-income countries: China, Ghana, India, Mexico, Russia and South Africa. Participants Nationally representative sample of adults aged 50 years and older. Main outcome measures We present achievement against key indicators of health system performance across effectiveness, cost, access, patient-centredness and equity domains...
September 2017: Journal of the Royal Society of Medicine
https://www.readbyqxmd.com/read/28894610/maturation-refinement-and-serotonergic-modulation-of-cerebellar-cortical-circuits-in-normal-development-and-in-murine-models-of-autism
#20
REVIEW
Eriola Hoxha, Pellegrino Lippiello, Bibiana Scelfo, Filippo Tempia, Mirella Ghirardi, Maria Concetta Miniaci
The formation of the complex cerebellar cortical circuits follows different phases, with initial synaptogenesis and subsequent processes of refinement guided by a variety of mechanisms. The regularity of the cellular and synaptic organization of the cerebellar cortex allowed detailed studies of the structural plasticity mechanisms underlying the formation of new synapses and retraction of redundant ones. For the attainment of the monoinnervation of the Purkinje cell by a single climbing fiber, several signals are involved, including electrical activity, contact signals, homosynaptic and heterosynaptic interaction, calcium transients, postsynaptic receptors, and transduction pathways...
2017: Neural Plasticity
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