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https://www.readbyqxmd.com/read/28641235/computer-aided-training-sensorimotor-cortex-functions-in-humans-before-the-upper-limb-transplantation-using-virtual-reality-and-sensory-feedback
#1
Marek Kurzynski, Anna Jaskolska, Jaroslaw Marusiak, Andrzej Wolczowski, Przemyslaw Bierut, Lukasz Szumowski, Jerzy Witkowski, Katarzyna Kisiel-Sajewicz
One of the biggest problems of upper limb transplantation is lack of certainty as to whether a patient will be able to control voluntary movements of transplanted hands. Based on findings of the recent research on brain cortex plasticity, a premise can be drawn that mental training supported with visual and sensory feedback can cause structural and functional reorganization of the sensorimotor cortex, which leads to recovery of function associated with the control of movements performed by the upper limbs. In this study, authors - based on the above observations - propose the computer-aided training (CAT) system, which generating visual and sensory stimuli, should enhance the effectiveness of mental training applied to humans before upper limb transplantation...
June 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28641199/influence-of-weight-bearing-visual-feedback-on-movement-symmetry-during-sit-to-stand-task
#2
Sumayeh Abujaber, Federico Pozzi, Joseph Zeni
BACKGROUND: Weight-bearing asymmetry is common in individuals with hip osteoarthritis and after total hip arthroplasty. Including symmetry training to the rehabilitation programs may normalize movement strategies during dynamic tasks. The purpose of this study was to evaluate the immediate influences of real-time visual feedback of weight distribution on the interlimb movement symmetry during the sit-to-stand task, before and after total hip arthroplasty, and to determine whether physical impairments affect the response to visual feedback...
June 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28641092/nuclear-mechanotransduction-sensing-the-force-from-within
#3
REVIEW
Avathamsa Athirasala, Nivi Hirsch, Amnon Buxboim
The cell nucleus is a hallmark of eukaryotic evolution, where gene expression is regulated and the genome is replicated and repaired. Yet, in addition to complex molecular processes, the nucleus has also evolved to serve physical tasks that utilize its optical and mechanical properties. Nuclear mechanotransduction of externally applied forces and extracellular stiffness is facilitated by the physical connectivity of the extracellular environment, the cytoskeleton and the nucleoskeletal matrix of lamins and chromatin...
June 19, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28641061/positive-parenting-as-responsible-care-risks-protective-factors-and-intervention-evaluation
#4
Silvia Donato, Anna Bertoni
In this themed issue of the Journal of Prevention & Intervention in the Community, the first four contributions provide knowledge on factors that can support or hinder positive parenting throughout children's lives. In particular, the first article examined the spillover of work stressors on parenting behaviors and the role of spousal support as a moderator of stress spillover. The second contribution examines the association between parents' promotion of volitional functioning and adopted children's sense of strength of family bonds and belonging to the adoptive family...
July 2017: Journal of Prevention & Intervention in the Community
https://www.readbyqxmd.com/read/28641060/effective-preventive-interventions-to-support-parents-of-young-children-illustrations-from-the-video-feedback-intervention-to-promote-positive-parenting-and-sensitive-discipline-vipp-sd
#5
Femmie Juffer, Estelle Struis, Claudia Werner, Marian J Bakermans-Kranenburg
Secure attachment relationships are essential for children's current and later development. From attachment theory and research, it can be derived that sensitive parenting is the key to positive parent-child relationships. Is it possible to design effective interventions to enhance sensitive parenting? In this article, we review elements that are crucial for effective attachment-based interventions, and we proceed with illustrations from the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline (VIPP-SD)...
July 2017: Journal of Prevention & Intervention in the Community
https://www.readbyqxmd.com/read/28641054/behavioural-interventions-to-reduce-nickel-exposure-in-a-nickel-processing-plant
#6
Krassi Rumchev, Helen Brown, Amanda Wheeler, Gavin Pereira, Jeff Spickett
Nickel is a widely used material in many industries. Although, there is enough evidence that occupational exposure to nickel may cause respiratory illnesses, allergies and even cancer, it is not possible to stop the use of nickel in occupational settings. Nickel exposure, however, can be controlled and reduced significantly in workplaces. The main objective of this study was to assess if educational intervention of hygiene behaviour could reduce nickel exposure among Indonesian nickel smelter workers. Participants were randomly assigned to three intervention groups (n = 99)...
June 22, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28640825/olfactory-learning-without-the-mushroom-bodies-spiking-neural-network-models-of-the-honeybee-lateral-antennal-lobe-tract-reveal-its-capacities-in-odour-memory-tasks-of-varied-complexities
#7
HaDi MaBouDi, Hideaki Shimazaki, Martin Giurfa, Lars Chittka
The honeybee olfactory system is a well-established model for understanding functional mechanisms of learning and memory. Olfactory stimuli are first processed in the antennal lobe, and then transferred to the mushroom body and lateral horn through dual pathways termed medial and lateral antennal lobe tracts (m-ALT and l-ALT). Recent studies reported that honeybees can perform elemental learning by associating an odour with a reward signal even after lesions in m-ALT or blocking the mushroom bodies. To test the hypothesis that the lateral pathway (l-ALT) is sufficient for elemental learning, we modelled local computation within glomeruli in antennal lobes with axons of projection neurons connecting to a decision neuron (LHN) in the lateral horn...
June 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28640723/intravitreal-injections-service-a-patient-experience-evaluation
#8
Hani Hasan, Sarah Flockhart, Waseem Qureshi, Selina Khan, Shahina Ahmed, Nimish Shah
INTRODUCTION: This survey has been conducted following the introduction of nurse-led intravitreal injections clinics at the Great Western Hospital. A team of 5 nurses regularly carry out an average of 90 injections per week. METHODS: A series of 169 consecutive injection patients have been offered the study questionnaire between 28 January 2016 and 28 February 2016; patients with no previous experience with a nurse injector were excluded. RESULTS: 76...
June 22, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28637262/qualitative-exploration-of-a-smoking-cessation-trial-for-people-living-with-hiv-in-south-africa
#9
Nandita Krishnan, Joel Gittelsohn, Alexandra Ross, Jessica Elf, Sandy Chon, Raymond Niaura, Neil Martinson, Jonathan E Golub
Introduction: In South Africa, people living with HIV (PLWH) have a high prevalence of smoking, which undermines the beneficial effects of antiretroviral therapy (ART). However, little is known about barriers to smoking cessation and what interventions work for PLWH in this setting. Methods: A randomized trial comparing intensive anti-smoking counseling versus counseling and nicotine replacement therapy (NRT) was recently concluded in Klerksdorp, South Africa. In a post-trial follow-up, 23 in-depth interviews with patients and one focus group discussion with counselors from the trial were conducted...
June 16, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28637236/the-ribosome-assembly-gene-network-is-controlled-by-the-feedback-regulation-of-transcription-elongation
#10
Fernando Gómez-Herreros, Thanasis Margaritis, Olga Rodríguez-Galán, Vicent Pelechano, Victoria Begley, Gonzalo Millán-Zambrano, Macarena Morillo-Huesca, Mari Cruz Muñoz-Centeno, José E Pérez-Ortín, Jesús de la Cruz, Frank C P Holstege, Sebastián Chávez
Ribosome assembly requires the concerted expression of hundreds of genes, which are transcribed by all three nuclear RNA polymerases. Transcription elongation involves dynamic interactions between RNA polymerases and chromatin. We performed a synthetic lethal screening in Saccharomyces cerevisiae with a conditional allele of SPT6, which encodes one of the factors that facilitates this process. Some of these synthetic mutants corresponded to factors that facilitate pre-rRNA processing and ribosome biogenesis...
June 15, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28637181/crosstalk-between-histone-modifications-indicates-that-inhibition-of-arginine-methyltransferase-carm1-activity-reverses-hiv-latency
#11
Zheng Zhang, Bryan C Nikolai, Leah A Gates, Sung Yun Jung, Edward B Siwak, Bin He, Andrew P Rice, Bert W O'Malley, Qin Feng
In eukaryotic cells, the gene expression status is strictly controlled by epigenetic modifications on chromatin. The repressive status of chromatin largely contributes to HIV latency. Studies have shown that modification of histone H3K27 acts as a key molecular switch for activation or suppression of many cellular genes. In this study, we found that K27-acetylated histone H3 specifically recruited Super Elongation Complex (SEC), the transcriptional elongation complex essential for HIV-1 long terminal repeat (LTR)-mediated and general cellular transcription...
June 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28637156/the-sink-or-swim-hypothesis-a-roadmap-from-pathology-to-work-instability
#12
Bilal Akter Mateen, Catherine Doogan, Kate Hayward, Susan Hourihan, Joanne Hurford, E Diane Playford
PURPOSE: Selecting the most appropriate health-related work outcome to evaluate an intervention can be fraught with difficulty. To aid clinicians in navigating this problem we have developed a model, which illustrates how pathology can affect specific measureable quantities, such as work instability. METHODS: Using a modified-Delphi procedure, a panel of experts met initially to analyze the content of 95 health-related work outcome measures and organize the identified areas of measurement into a coherent model, complemented by a narrative review of the literature...
March 3, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637152/how-physical-therapists-instruct-patients-with-stroke-an-observational-study-on-attentional-focus-during-gait-rehabilitation-after-stroke
#13
Elmar Kal, Henrieke van den Brink, Han Houdijk, John van der Kamp, Paulien Helena Goossens, Coen van Bennekom, Erik Scherder
PURPOSE: People without neurological impairments show superior motor learning when they focus on movement effects (external focus) rather than on movement execution itself (internal focus). Despite its potential for neurorehabilitation, it remains unclear to what extent external focus strategies are currently incorporated in rehabilitation post-stroke. Therefore, we observed how physical therapists use attentional focus when treating gait of rehabilitating patients with stroke. METHODS: Twenty physical therapist-patient couples from six rehabilitation centers participated...
February 24, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637136/virtual-environment-navigation-with-look-around-mode-to-explore-new-real-spaces-by-people-who-are-blind
#14
Orly Lahav, Hadas Gedalevitz, Steven Battersby, David Brown, Lindsay Evett, Patrick Merritt
BACKGROUND: This paper examines the ability of people who are blind to construct a mental map and perform orientation tasks in real space by using Nintendo Wii technologies to explore virtual environments. The participant explores new spaces through haptic and auditory feedback triggered by pointing or walking in the virtual environments and later constructs a mental map, which can be used to navigate in real space. METHODS: The study included 10 participants who were congenitally or adventitiously blind, divided into experimental and control groups...
February 10, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637091/nurse-managers-determinants-and-behaviours-in-relation-to-patient-and-visitor-aggression-in-general-hospitals-a-qualitative-study
#15
Birgit Heckemann, Karin A Peter, Ruud Jg Halfens, Jos Mga Schols, Gerjo Kok, Sabine Hahn
AIM: 'To explore nurse managers' behaviours, attitudes, perceived social norms and behavioural control in the prevention and management of patient and visitor aggression in general hospitals. BACKGROUND: Patient and visitor aggression in general hospitals is a global problem that incurs substantial human suffering and organizational cost. Managers are key persons for creating low-aggression environments, yet their role and behaviour in reducing patient and visitor aggression remains unexplored...
June 21, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28637054/modeling-alphabet-skills-as-instructive-feedback-within-a-phonological-awareness-intervention
#16
Arnold Olszewski, Xigrid Soto, Howard Goldstein
Purpose: This study evaluated the efficacy of an instructive feedback strategy for modeling letter names and sounds during presentation of positive feedback within a small-group phonological awareness intervention for preschoolers. Method: Two experiments were conducted using multiple-baseline designs across children and behaviors. Letter name and sound identification and performance on a phonological awareness fluency measure served as the primary outcome variables...
June 22, 2017: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/28636920/nanog-fluctuations-in-embryonic-stem-cells-highlight-the-problem-of-measurement-in-cell-biology
#17
Rosanna C G Smith, Patrick S Stumpf, Sonya J Ridden, Aaron Sim, Sarah Filippi, Heather A Harrington, Ben D MacArthur
A number of important pluripotency regulators, including the transcription factor Nanog, are observed to fluctuate stochastically in individual embryonic stem cells. By transiently priming cells for commitment to different lineages, these fluctuations are thought to be important to the maintenance of, and exit from, pluripotency. However, because temporal changes in intracellular protein abundances cannot be measured directly in live cells, fluctuations are typically assessed using genetically engineered reporter cell lines that produce a fluorescent signal as a proxy for protein expression...
June 20, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28636887/temporal-dynamics-of-the-hpa-axis-linked-to-exploratory-behavior-in-a-wild-european-songbird-parus-major
#18
Alexander T Baugh, Sarah C Davidson, Michaela Hau, Kees van Oers
Variation in the reactivity of the endocrine stress axis is thought to underlie aspects of persistent individual differences in behavior (i.e. animal personality). Previous studies, however, have focused largely on estimating baseline or peak levels of glucocorticoids (CORT), often in captive animals. In contrast, the temporal dynamics of the HPA axis-how quickly it turns on and off, for example-may better indicate how an individual copes with stressors. Moreover, these HPA components might be correlated, thereby representing endocrine suites...
June 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28636886/sirt1-enzymatically-potentiates-1-25-dihydroxyvitamin-d3-signaling-via-vitamin-d-receptor-deacetylation
#19
Marya S Sabir, Chengcheng Hu, Zainab Khan, Michael A Galligan, Christopher M Dussik, Sanchita Mallick, Angelika Dampf Stone, Shane F Batie, Elizabeth T Jacobs, G Kerr Whitfield, Mark R Haussler, Michael C Heck, Peter W Jurutka
The hormonal metabolite of vitamin D, 1,25-dihydroxyvitamin D3 (1,25D), binds to the vitamin D receptor (VDR) and promotes heterodimerization of VDR with a retinoid-X-receptor (RXR) to genomically regulate diverse cellular processes. Herein, it is revealed for the first time that VDR is post-translationally acetylated, and that VDR immunoprecipitated from human embryonic kidney (HEK293) cells displays a dramatic decrease in acetylated receptor in the presence of 1,25D-ligand, sirtuin-1 (SIRT1) deacetylase, or the resveratrol activator of SIRT1...
June 18, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28636629/minimal-oscillating-subnetwork-in-the-huang-ferrell-model-of-the-mapk-cascade
#20
Otto Hadač, František Muzika, Vladislav Nevoral, Michal Přibyl, Igor Schreiber
Prompted by the recent growing evidence of oscillatory behavior involving MAPK cascades we present a systematic approach of analyzing models and elucidating the nature of biochemical oscillations based on reaction network theory. In particular, we formulate a minimal biochemically consistent mass action subnetwork of the Huang-Ferrell model of the MAPK signalling that provides an oscillatory response when a parameter controlling the activation of the top-tier kinase is varied. Such dynamics are either intertwined with or separated from the earlier found bistable/hysteretic behavior in this model...
2017: PloS One
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