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https://www.readbyqxmd.com/read/28799139/the-effects-of-the-structure-and-composition-of-the-hydrophobic-parts-of-phosphatidylcholine-containing-systems-on-phosphatidylcholine-oxidation-by-ozone
#1
Elżbieta Rudolphi-Skórska, Maria Filek, Maria Zembala
The degree of lipid unsaturation is a parameter used to describe membrane susceptibility to oxidation. This paper highlights the importance of double bond distribution in the hydrophobic parts of lipid layers. The problem was studied by determining the effects induced by ozone dissolved in an aqueous phase acting on layers of unsaturated cholines of various molecular structures, including bi-unsaturated (DOPC), mono-unsaturated (POPC) and natural origin (soy PC). The destructive effects of ozone were quantified as the ratio of areas per molecule, which corresponded to a 1 mN/m rise in the layer surface pressure for oxidized to non-oxidized lipids (A lift/A lift(0) )...
August 10, 2017: Journal of Membrane Biology
https://www.readbyqxmd.com/read/28795474/endocrine-disruption-in-aquatic-systems-up-scaling-research-to-address-ecological-consequences
#2
Fredric M Windsor, Steve J Ormerod, Charles R Tyler
Endocrine-disrupting chemicals (EDCs) can alter biological function in organisms at environmentally relevant concentrations and are a significant threat to aquatic biodiversity, but there is little understanding of exposure consequences for populations, communities and ecosystems. The pervasive nature of EDCs within aquatic environments and their multiple sub-lethal effects make assessments of their impact especially important but also highly challenging. Herein, we review the data on EDC effects in aquatic systems focusing on studies assessing populations and ecosystems, and including how biotic and abiotic processes may affect, and be affected by, responses to EDCs...
August 9, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28791693/atypical-antipsychotics-for-disruptive-behaviour-disorders-in-children-and-youths
#3
REVIEW
Jik H Loy, Sally N Merry, Sarah E Hetrick, Karolina Stasiak
BACKGROUND: This is an update of the original Cochrane Review, last published in 2012 (Loy 2012). Children and youths with disruptive behaviour disorders may present to health services, where they may be treated with atypical antipsychotics. There is increasing usage of atypical antipsychotics in the treatment of disruptive behaviour disorders. OBJECTIVES: To evaluate the effect and safety of atypical antipsychotics, compared to placebo, for treating disruptive behaviour disorders in children and youths...
August 9, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28791517/psychometric-evaluation-of-the-interrai-child-and-youth-mental-health-disruptive-aggression-behaviour-scale-dabs-and-hyperactive-distraction-scale-hds
#4
Chloe Lau, Shannon L Stewart, Donald H Saklofske, Paul F Tremblay, John Hirdes
The present study aims to validate the interRAI Child and Youth Mental Health (interRAI ChYMH), Disruptive/Aggression Behaviour Scale (DABS) and Hyperactive/Distraction Scale (HDS). Data were collected from children/youth aged 4-18 (N = 3464) across 39 mental health agencies in Ontario, Canada. Unrestricted factor analysis using polychoric correlation matrices and Samejima's graded item response theory (IRT) parameterizations were conducted for both measures. Scores on the HDS and DABS were also compared amongst children/youth diagnosed with attention-deficit hyperactivity disorder (ADHD) and disruptive behaviour disorder (DBD) respectively using DSM-IV criteria...
August 8, 2017: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/28780563/implementing-a-multi-modal-support-service-model-for-the-family-caregivers-of-persons-with-age-related-macular-degeneration-a-study-protocol-for-a-randomised-controlled-trial
#5
Bamini Gopinath, Ashley Craig, Annette Kifley, Gerald Liew, Jaye Bloffwitch, Kim Van Vu, Nichole Joachim, Rob Cummins, Julie Heraghty, Timothy Broady, Alison Hayes, Paul Mitchell
INTRODUCTION: Age-related macular degeneration (AMD) is a leading cause of blindness and low vision among older adults. Previous research shows a high prevalence of distress and disruption to the lifestyle of family caregivers of persons with late AMD. This supports existing evidence that caregivers are 'hidden patients' at risk of poor health outcomes. There is ample scope for improving the support available to caregivers, and further research should be undertaken into developing services that are tailored to the requirements of family caregivers of persons with AMD...
August 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/28770372/the-impact-of-anger-in-adherence-to-treatment-and-beliefs-about-disease-1%C3%A2-year-after-stroke
#6
A Catarina Santos, José M Ferro
Anger is a frequent neuropsychiatric symptom after stroke, which can disrupt treatment and recovery, in particular by affecting adherence behaviour to treatment and health care education. This study aimed to follow-up a cohort of stroke patients 12 months after their stroke to describe the presence of anger, compare levels and profile of acute and post-acute anger and analyse its impact on the adherence to treatment and beliefs about stroke. We followed (13.3 months mean follow-up) 91 stroke patients with a standardized protocol, using State-Trait Anger Expression Inventory-2 (STAXI-2) to assess the frequency and profile of anger and its components and one questionnaire to measure adherence to treatment and health education (meaning on the treatment) (Adh-T)...
August 2, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28765626/motorboat-noise-disrupts-co-operative-interspecific-interactions
#7
Sophie L Nedelec, Suzanne C Mills, Andrew N Radford, Ricardo Beldade, Stephen D Simpson, Brendan Nedelec, Isabelle M Côté
Human-made noise is contributing increasingly to ocean soundscapes. Its physical, physiological and behavioural effects on marine organisms are potentially widespread, but our understanding remains largely limited to intraspecific impacts. Here, we examine how motorboats affect an interspecific cleaning mutualism critical for coral reef fish health, abundance and diversity. We conducted in situ observations of cleaning interactions between bluestreak cleaner wrasses (Labroides dimidiatus) and their fish clients before, during and after repeated, standardised approaches with motorboats...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28763478/individual-differences-in-circadian-locomotor-parameters-correlate-with-anxiety-and-depression-like-behavior
#8
Jeffrey Anyan, Michael Verwey, Shimon Amir
Disrupted circadian rhythms are a core feature of mood and anxiety disorders. Circadian rhythms are coordinated by a light-entrainable master clock located in the suprachiasmatic nucleus. Animal models of mood and anxiety disorders often exhibit blunted rhythms in locomotor activity and clock gene expression. Interestingly, the changes in circadian rhythms correlate with mood-related behaviours. Although animal models of depression and anxiety exhibit aberrant circadian rhythms in physiology and behavior, it is possible that the methodology being used to induce the behavioral phenotype (e...
2017: PloS One
https://www.readbyqxmd.com/read/28759385/physical-activity-sedentary-behaviour-diet-and-cancer-an-update-and-emerging-new-evidence
#9
REVIEW
Jacqueline Kerr, Cheryl Anderson, Scott M Lippman
The lifestyle factors of physical activity, sedentary behaviour, and diet are increasingly being studied for their associations with cancer. Physical activity is inversely associated with and sedentary behaviour is positively (and independently) associated with an increased risk of more than ten types of cancer, including colorectal cancer (and advanced adenomas), endometrial cancers, and breast cancer. The most consistent dietary risk factor for premalignant and invasive breast cancer is alcohol, whether consumed during early or late adult life, even at low levels...
August 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28759211/behaviour-of-zein-in-aqueous-ethanol-under-atmospheric-pressure-cold-plasma-acp-treatment
#10
Shuang Dong, Jian-Ming Wang, Li-Min Cheng, Yan-Li Lu, Shu-Hong Li, Ye Chen
The effects of atmospheric cold plasma (ACP) on zein in aqueous ethanol (80%, v/v) were investigated including particle size distribution, molecular structure, and content of free sulfhydryl (free-SH) group and disulfide bond, etc. The film-forming properties of zein films were also characterized. After ACP treatment, the particle size of zein aggregates showed a remarkable decrease and uniform particle distribution. There was a downward trend both in pH value and viscosity with the increasing ACP treatment intensity...
July 31, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28754059/disrupting-the-intramolecular-interaction-between-proto-oncogene-c-src-sh3-domain-and-its-self-binding-peptide-ppii-with-rationally-designed-peptide-ligands
#11
Peng Zhou, Shasha Hou, Zhengya Bai, Zhongyan Li, Heyi Wang, Zheng Chen, Yang Meng
Proto-oncogene non-receptor tyrosine protein kinase c-Src has been involved in the development, progression and metastasis of a variety of human cancers. This protein contains two self-binding peptide (SBP) sites separately between the SH3 domain and polyproline-II (PPII) helix and between the SH2 domain and C-terminal phosphorylatable tail (CTPT), which are potential targets of anticancer drugs to regulate the kinase activity. Here, we described an integrated protocol to systematically investigate the structural basis, energetic property and dynamics behaviour of PPII binding to SH3, and to rationally design potent peptide ligands to target the SBP site of SH3-PPII interaction...
July 28, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28747399/cell-segregation-and-border-sharpening-by-eph-receptor-ephrin-mediated-heterotypic-repulsion
#12
Harriet B Taylor, Anaïs Khuong, Zhonglin Wu, Qiling Xu, Rosalind Morley, Lauren Gregory, Alexei Poliakov, William R Taylor, David G Wilkinson
Eph receptor and ephrin signalling has a major role in cell segregation and border formation, and may act through regulation of cell adhesion, repulsion or tension. To elucidate roles of cell repulsion and adhesion, we combined experiments in cell culture assays with quantitations of cell behaviour which are used in computer simulations. Cells expressing EphB2, or kinase-inactive EphB2 (kiEphB2), segregate and form a sharp border with ephrinB1-expressing cells, and this is disrupted by knockdown of N-cadherin...
July 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28743920/sexual-pair-formation-in-a-cicada-mediated-by-acoustic-behaviour-of-females-and-positive-phonotaxis-of-males
#13
Zehai Hou, Changqing Luo, J Dale Roberts, Cong Wei
The functions of female song found in a few cicadas have rarely been studied. In the cicada Subpsaltria yangi we investigated the acoustic behaviour and signal structure of songs produced by females, the phonotaxis of males, and mate choice, as well as the selective pressure imposed on this species by predators. Pair-formation in S. yangi occurs when males signal, females respond, then males move to signaling females, which is opposite to that in most other cicadas where females move to calling males. Females only mate once and are sexually unreceptive after copulation...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733268/carriers-of-an-apolipoprotein-e-epsilon-4-allele-are-more-vulnerable-to-a-dietary-deficiency-in-omega-3-fatty-acids-and-cognitive-decline
#14
REVIEW
Tanya Gwendolyn Nock, Raphaël Chouinard-Watkins, Mélanie Plourde
Carriers of an epsilon 4 allele (E4) of apolipoprotein E (APOE) develop Alzheimer's disease (AD) earlier than carriers of other APOE alleles. The metabolism of plasma docosahexaenoic acid (DHA, 22:6n-3), an omega-3 fatty acid (n-3 FA), taken up by the brain and concentrated in neurons, is disrupted in E4 carriers, resulting in lower levels of brain DHA. Behavioural and cognitive impairments have been observed in animals with lower brain DHA levels, with emphasis on loss of spatial memory and increased anxiety...
July 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28730970/healthy-diet-and-reduction-of-chronic-disease-risks-of-night-shift-workers
#15
Giovanni M Ferri, Domenica Cavone, Graziana Intranuovo, Linda Macinagrossa
BACKGROUND: The large increase in epidemiological studies on night shift work is due to the important effects of night shift work on workers' health and psychophysical wellbeing. The short-term effects-insomnia, difficulties in managing work and private life, lower work performance, and more work and extra-work accidents-are easily studied. However, there are several long-term effects that are difficult to study because of the need for detailed exposure assessment and the long latency periods of these diseases...
July 20, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28730860/prevalence-of-attention-deficit-hyperactivity-and-other-disruptive-behaviour-disorder-symptoms-among-primary-school-age-children-in-kayseri-turkey
#16
Vesile Senol, Demet Unalan, Raziye Peksen Akca, Mustafa Basturk
Objectives This study aimed to determine the prevalence of attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), and conduct disorder (CD), and their influencing factors on primary school-age children. Methods This cross-sectional study was conducted among 2045 students, 7-15 years old, who were randomly selected from seven schools in Kayseri, Turkey, in 2012. Participants were stratified by socioeconomic status. Data were collected using the Turgay DSM-IV-Based Child and Adolescent Behavioural Disorders Screening and Rating Scale (T-DSM-IV-S)...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28726916/a-novel-3-d-bio-microfluidic-system-mimicking-in-vivo-heterogeneous-tumour-microstructures-reveals-complex-tumour-stroma-interactions
#17
Qihui Fan, Ruchuan Liu, Yang Jiao, Chunxiu Tian, James D Farrell, Wenwen Diao, Xiaochen Wang, Fengrong Zhang, Wei Yuan, Haibo Han, Jinfeng Chen, Yue Yang, Xixiang Zhang, Fangfu Ye, Ming Li, Zhongcan Ouyang, Liyu Liu
A 3-D microfluidic system consisting of microchamber arrays embedded in a collagen hydrogel with tuneable biochemical gradients that mimics the tumour microenvironment of mammary glands was constructed for the investigation on the interactions between invasive breast cancer cells and stromal cells. The hollow microchambers in collagen provide a very similar 3-D environment to that in vivo that regulates collective cellular dynamics and behaviour, while the microfluidic channels surrounding the collagen microchamber arrays allow one to impose complex concentration gradients of specific biological molecules or drugs...
August 8, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28724738/early-life-manipulations-of-vasopressin-family-peptides-alter-vocal-learning
#18
Nicole M Baran, Samantha C Peck, Tabitha H Kim, Michael H Goldstein, Elizabeth Adkins-Regan
Vocal learning from social partners is crucial for the successful development of communication in a wide range of species. Social interactions organize attention and enhance motivation to learn species-typical behaviour. However, the neurobiological mechanisms connecting social motivation and vocal learning are unknown. Using zebra finches (Taeniopygia guttata), a ubiquitous model for vocal learning, we show that manipulations of nonapeptide hormones in the vasopressin family (arginine vasotocin, AVT) early in development can promote or disrupt both song and social motivation...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28711473/interaction-of-reelin-and-stress-on-immobility-in-the-forced-swim-test-but-not-dopamine-mediated-locomotor-hyperactivity-or-prepulse-inhibition-disruption-relevance-to-psychotic-and-mood-disorders
#19
Michael J Notaras, Billie Vivian, Carey Wilson, Maarten van den Buuse
RATIONALE: Psychotic disorders, such as schizophrenia, as well as some mood disorders, such as bipolar disorder, have been suggested to share common biological risk factors. One such factor is reelin, a large extracellular matrix glycoprotein that regulates neuronal migration during development as well as numerous activity-dependent processes in the adult brain. The current study sought to evaluate whether a history of stress exposure interacts with endogenous reelin levels to modify behavioural endophenotypes of relevance to psychotic and mood disorders...
July 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28709999/tdcs-over-the-right-inferior-frontal-gyrus-disrupts-control-of-interference-in-memory-a-retrieval-induced-forgetting-study
#20
Davide F Stramaccia, Barbara Penolazzi, Gianmarco Altoè, Giovanni Galfano
Retrieving information from episodic memory may result in later inaccessibility of related but task-irrelevant information. This phenomenon, known as retrieval-induced forgetting, is thought to represent a specific instance of broader cognitive control mechanisms, that would come into play during memory retrieval, whenever non-target competing memories interfere with recall of target items. Recent neuroimaging studies have shown an association between these mechanisms and the activity of the right Prefrontal Cortex...
July 11, 2017: Neurobiology of Learning and Memory
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