keyword
MENU ▼
Read by QxMD icon Read
search

Disruptive behaviour

keyword
https://www.readbyqxmd.com/read/28924005/nigral-glutamatergic-neurons-control-the-speed-of-locomotion
#1
Dimitri Ryczko, Swantje Grätsch, Laura Schläger, Avo Keuyalian, Zakaria Boukhatem, Claudia Garcia, François Auclair, Ansgar Büschges, Réjean Dubuc
The Mesencephalic Locomotor Region (MLR) plays a crucial role in locomotor control. In vertebrates, stimulation of the MLR at increasing intensities elicits locomotion of growing speed. This effect has been presumed to result from higher brain inputs activating the MLR like a dimmer switch. Here, we show in lampreys (Petromyzon marinus) of either sex that incremental stimulation of a region homologous to the mammalian substantia nigra pars compacta (SNc) evokes increasing activation of MLR cells with a graded increase in the frequency of locomotor movements...
September 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28923995/bridging-the-gap-from-massive-stars-to-supernovae
#2
Justyn R Maund, Paul A Crowther, Hans-Thomas Janka, Norbert Langer
Almost since the beginning, massive stars and their resultant supernovae have played a crucial role in the Universe. These objects produce tremendous amounts of energy and new, heavy elements that enrich galaxies, encourage new stars to form and sculpt the shapes of galaxies that we see today. The end of millions of years of massive star evolution and the beginning of hundreds or thousands of years of supernova evolution are separated by a matter of a few seconds, in which some of the most extreme physics found in the Universe causes the explosive and terminal disruption of the star...
October 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28921570/behavioural-responses-of-infective-stage-copepodids-of-the-salmon-louse-lepeophtheirus-salmonis-copepoda-caligidae-to-host-related-sensory-cues
#3
D M Fields, A B Skiftesvik, H I Browman
The salmon louse (Lepeophtheirus salmonis [Krøyer]) is an ectoparasitic copepod that causes disease in farmed Atlantic salmon (Salmo salar) and may play a role in the decline of some wild salmonid populations. Controlling lice infestations is a major cost for the salmon industry; this has stimulated the pursuit of alternative approaches to controlling them. One such approach involves determining, and then disrupting, the sensory cues used by the parasite to find its host. In this context, we examined the behavioural responses of lice copepodids to light flicker-simulating light reflecting from the sides of the salmon host and/or the shadows cast by fish passing overhead-and water-soluble chemicals released from the skin of the salmon...
September 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28918339/interference-of-dibutylphthalate-on-human-prostate-cell-viability
#4
Mariana Di Lorenzo, Maurizio Forte, Salvatore Valiante, Vincenza Laforgia, Maria De Falco
Dibutylphthalate (DBP) is an environmental pollutant widely used as plasticizer in a variety of industrial applications worldwide. This agent can be found in personal-care products, children's toy, pharmaceuticals, food products. Exposure to DBP can occur via ingestion and inhalation as well as intravenous or skin contact. DBP belongs to the family of endocrine disrupting chemicals (EDCs) and its effects on reproductive system were demonstrated both in vivo and in vitro. In the present study we evaluated the effects of DBP on human prostate adenocarcinoma epithelial cells (LNCaP) in order to highlight xenoestrogens influence on human prostate...
September 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28916681/circannual-testis-and-moult-cycles-persist-under-photoperiods-that-disrupt-circadian-activity-and-clock-gene-cycles-in-spotted-munia
#5
Neha Agarwal, Ila Mishra, Ruchi Komal, Sangeeta Rani, Vinod Kumar
We investigated if circannual rhythms underlying annual testis maturation and moult cycles were independent of the duration and frequency of light period and the circadian clock control in non-photoperiodic spotted munia. Birds were subjected to an aberrant light-dark (LD) cycle (3.5L:3.5D; T7, T=period length of LD cycle) and continuous light (LL, 24L:0D), with controls on 12L:12D (T24, 24 h LD cycle). Initial experiment measured the activity pattern and 24 h mRNA oscillations of circadian clock genes (bmal1, clock, per2, cry1, cry2) in the hypothalamus, putative site of the seasonal timing...
September 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28915892/modelling-the-impact-of-the-long-term-use-of-insecticide-treated-bed-nets-on-anopheles-mosquito-biting-time
#6
Claudia P Ferreira, Silas P Lyra, Franciane Azevedo, David Greenhalgh, Eduardo Massad
BACKGROUND: Evidence of changing in biting and resting behaviour of the main malaria vectors has been mounting up in recent years as a result of selective pressure by the widespread and long-term use of insecticide-treated bed nets (ITNs), and indoor residual spraying. The impact of resistance behaviour on malaria intervention efficacy has important implications for the epidemiology and malaria control programmes. In this context, a theoretical framework is presented to understand the mechanisms determining the evolution of feeding behaviour under the pressure of use of ITNs...
September 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28914067/-drugs-and-dosage-forms-as-risk-factors-for-dental-caries
#7
Petra Bořilová Linhartová, Lydie Izakovičová Hollá
Dental caries is a multifactorial disease which, despite a series of preventive measures, remains the most common infectious disease worldwide. Susceptibility or resistance to caries may be a result of the presence of risk or protective factors, genetic predisposition, inappropriate lifestyle associated with education, behavioural and socioeconomic factors. The aim of this review is to highlight the risks associated with the use of some drugs and dosage forms in relation to the formation and development of dental caries...
2017: Ceská a Slovenská Farmacie
https://www.readbyqxmd.com/read/28904346/brain-damage-and-behavioural-disorders-in-fish-induced-by-plastic-nanoparticles-delivered-through-the-food-chain
#8
Karin Mattsson, Elyse V Johnson, Anders Malmendal, Sara Linse, Lars-Anders Hansson, Tommy Cedervall
The tremendous increases in production of plastic materials has led to an accumulation of plastic pollution worldwide. Many studies have addressed the physical effects of large-sized plastics on organisms, whereas few have focused on plastic nanoparticles, despite their distinct chemical, physical and mechanical properties. Hence our understanding of their effects on ecosystem function, behaviour and metabolism of organisms remains elusive. Here we demonstrate that plastic nanoparticles reduce survival of aquatic zooplankton and penetrate the blood-to-brain barrier in fish and cause behavioural disorders...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28900189/misalignment-with-the-external-light-environment-drives-metabolic-and-cardiac-dysfunction
#9
Alexander C West, Laura Smith, David W Ray, Andrew S I Loudon, Timothy M Brown, David A Bechtold
Most organisms use internal biological clocks to match behavioural and physiological processes to specific phases of the day-night cycle. Central to this is the synchronisation of internal processes across multiple organ systems. Environmental desynchrony (e.g. shift work) profoundly impacts human health, increasing cardiovascular disease and diabetes risk, yet the underlying mechanisms remain unclear. Here, we characterise the impact of desynchrony between the internal clock and the external light-dark (LD) cycle on mammalian physiology...
September 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28899743/ctbs-disruption-of-the-supplementary-motor-area-perturbs-cortical-sequence-representation-but-not-behavioural-performance
#10
Oleg Solopchuk, Andrea Alamia, Laurence Dricot, Julie Duque, Alexandre Zénon
Neuroimaging studies have repeatedly emphasized the role of the supplementary motor area (SMA) in motor sequence learning, but interferential approaches have led to inconsistent findings. Here, we aimed to test the role of the SMA in motor skill learning by combining interferential and neuroimaging techniques. Sixteen subjects were trained on simple finger movement sequences for 4 days. Afterwards, they underwent two neuroimaging sessions, in which they executed both trained and novel sequences. Prior to entering the scanner, the subjects received inhibitory transcranial magnetic stimulation (TMS) over the SMA or a control site...
September 9, 2017: NeuroImage
https://www.readbyqxmd.com/read/28899449/the-provider-perspective-investigating-the-effect-of-the-electronic-patient-reported-outcome-epro-mobile-application-and-portal-on-primary-care-provider-workflow
#11
Parminder K Hans, Carolyn Steele Gray, Ashlinder Gill, James Tiessen
Aim This qualitative study investigates how the Electronic Patient-Reported Outcome (ePRO) mobile application and portal system, designed to capture patient-reported measures to support self-management, affected primary care provider workflows. BACKGROUND: The Canadian health system is facing an ageing population that is living with chronic disease. Disruptive innovations like mobile health technologies can help to support health system transformation needed to better meet the multifaceted needs of the complex care patient...
September 13, 2017: Primary Health Care Research & Development
https://www.readbyqxmd.com/read/28898656/seed-dormancy-and-germination
#12
Steven Penfield
Reproduction is a critical time in plant life history. Therefore, genes affecting seed dormancy and germination are among those under strongest selection in natural plant populations. Germination terminates seed dispersal and thus influences the location and timing of plant growth. After seed shedding, germination can be prevented by a property known as seed dormancy. In practise, seeds are rarely either dormant or non-dormant, but seeds whose dormancy-inducing pathways are activated to higher levels will germinate in an ever-narrower range of environments...
September 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28893567/molecular-basis-of-androgen-action-on-human-sexual-desire
#13
REVIEW
Daniele Santi, Giorgia Spaggiari, Lisa Gilioli, Francesco Potì, Manuela Simoni, Livio Casarini
Reproduction is a fundamental process for the species maintenance and the propagation of genetic information. The energy expenditure for mating is overtaken by motivational stimuli, such as orgasm, finely regulated by steroid hormones, gonadotropins, neurotransmitters and molecules acting in the brain and peripheral organs. These functions are often investigated using animal models and translated to humans, where the androgens action is mediated by nuclear and membrane receptors converging in the regulation of both long-term genomic and rapid non-genomic signals...
September 8, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28891117/the-sleeping-patterns-of-head-start-children-and-the-influence-on-developmental-outcomes
#14
M Schlieber, J Han
BACKGROUND: Sleep has a significant influence on children's development. The objective of this study was to investigate Head Start children's sleeping patterns and the impact on cognitive and behavioural outcomes. METHODS: Using the 2009 cohort of the Head Start Family and Child Experiences Survey (N = 2,868), information on sleeping patterns was assessed through parent interviews. Cognitive outcomes were assessed using direct assessments (Peabody Picture Vocabulary Test-IV, the Expressive One-Word Picture Vocabulary Test, and Subtests of the Woodcock-Johnson III) in addition to teacher report...
September 11, 2017: Child: Care, Health and Development
https://www.readbyqxmd.com/read/28888927/the-effects-of-improving-sleep-on-mental-health-oasis-a-randomised-controlled-trial-with-mediation-analysis
#15
Daniel Freeman, Bryony Sheaves, Guy M Goodwin, Ly-Mee Yu, Alecia Nickless, Paul J Harrison, Richard Emsley, Annemarie I Luik, Russell G Foster, Vanashree Wadekar, Christopher Hinds, Andrew Gumley, Ray Jones, Stafford Lightman, Steve Jones, Richard Bentall, Peter Kinderman, Georgina Rowse, Traolach Brugha, Mark Blagrove, Alice M Gregory, Leanne Fleming, Elaine Walklet, Cris Glazebrook, E Bethan Davies, Chris Hollis, Gillian Haddock, Bev John, Mark Coulson, David Fowler, Katherine Pugh, John Cape, Peter Moseley, Gary Brown, Claire Hughes, Marc Obonsawin, Sian Coker, Edward Watkins, Matthias Schwannauer, Kenneth MacMahon, A Niroshan Siriwardena, Colin A Espie
BACKGROUND: Sleep difficulties might be a contributory causal factor in the occurrence of mental health problems. If this is true, improving sleep should benefit psychological health. We aimed to determine whether treating insomnia leads to a reduction in paranoia and hallucinations. METHODS: We did this single-blind, randomised controlled trial (OASIS) at 26 UK universities. University students with insomnia were randomly assigned (1:1) with simple randomisation to receive digital cognitive behavioural therapy (CBT) for insomnia or usual care, and the research team were masked to the treatment...
September 6, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28886533/artificial-light-at-night-affects-sleep-behaviour-differently-in-two-closely-related-songbird-species
#16
Jiachen Sun, Thomas Raap, Rianne Pinxten, Marcel Eens
Artificial light at night (ALAN) or light pollution is an increasing and worldwide problem. There is growing concern that because of the disruption of natural light cycles, ALAN may pose serious risks for wildlife. While ALAN has been shown to affect many aspects of animal behaviour and physiology, few studies have experimentally studied whether individuals of different species in the wild respond differently to ALAN. Here, we investigated the effect of ALAN on sleep behaviour in two closely related songbird species inhabiting the same study area and roosting/breeding in similar nest boxes...
September 5, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28879004/diving-behaviour-of-cuvier-s-beaked-whales-exposed-to-two-types-of-military-sonar
#17
Erin A Falcone, Gregory S Schorr, Stephanie L Watwood, Stacy L DeRuiter, Alexandre N Zerbini, Russel D Andrews, Ronald P Morrissey, David J Moretti
Cuvier's beaked whales (Ziphius cavirostris) have stranded in association with mid-frequency active sonar (MFAS) use, and though the causative mechanism linking these events remains unclear, it is believed to be behaviourally mediated. To determine whether MFAS use was associated with behavioural changes in this species, satellite tags were used to record the diving and movements of 16 Cuvier's beaked whales for up to 88 days in a region of frequent MFAS training off the coast of Southern California. Tag data were combined with summarized records of concurrent bouts of high-power, surface-ship and mid-power, helicopter-deployed MFAS use, along with other potential covariates, in generalized additive mixed-effects models...
August 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28875484/women-s-auto-biography-and-dissociative-identity-disorder-implications-for-mental-health-practice
#18
Kendal Tomlinson, Charley Baker
Dissociative Identity Disorder (DID) is an uncommon disorder that has long been associated with exposure to traumatic stressors exceeding manageable levels commonly encompassing physical, psychological and sexual abuse in childhood that is prolonged and severe in nature. In DID, dissociation continues after the traumatic experience and produces a disruption in identity where distinct personality states develop. These personalities are accompanied by variations in behaviour, emotions, memory, perception and cognition...
September 6, 2017: Journal of Medical Humanities
https://www.readbyqxmd.com/read/28874224/adolescent-mental-health-and-behavioural-predictors-of-being-neet-a-prospective-study-of-young-adults-not-in-employment-education-or-training
#19
L Rodwell, H Romaniuk, W Nilsen, J B Carlin, K J Lee, G C Patton
BACKGROUND: Young adults who are not in employment, education, or training (NEET) are at risk of long-term economic disadvantage and social exclusion. Knowledge about risk factors for being NEET largely comes from cross-sectional studies of vulnerable individuals. Using data collected over a 10-year period, we examined adolescent predictors of being NEET in young adulthood. METHODS: We used data on 1938 participants from the Victorian Adolescent Health Cohort Study, a community-based longitudinal study of adolescents in Victoria, Australia...
September 6, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28870066/simulation-studies-on-the-lipid-interaction-and-conformation-of-novel-drug-delivery-pseudopeptidic-polymers
#20
Shuzhe Wang, Fernando Bresme
A class of pseudopeptides based on poly(lysine iso-phthalamide) backbone have emerged as promising drug delivery candidates due to their pH activated membrane disruption ability. In order to gain molecular understanding on these novel polymeric species, we have constructed force field parameters and simulated the behaviours of polymers with and without phenylalanine grafted as side chains at conditions compatible with different pH. The free energy changes upon polymer permeation through membrane were calculated using the umbrella sampling technique...
September 4, 2017: Journal of Physical Chemistry. B
keyword
keyword
91353
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"