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https://www.readbyqxmd.com/read/28334933/disrupted-in-schizophrenia-1is-essential-for-normal-hypothalamic-pituitary-interrenal-hpi-axis-function
#1
Helen Eachus, Charlotte Bright, Vincent T Cunliffe, Marysia Placzek, Jonathan D Wood, Penelope J Watt
Psychiatric disorders arise due to an interplay of genetic and environmental factors, including stress. Studies in rodents have shown that mutants for Disrupted-In-Schizophrenia-1 (DISC1), a well-accepted genetic risk factor for mental illness, display abnormal behaviours in response to stress, but the mechanisms through which DISC1 affects stress responses remain poorly understood. Using two lines of zebrafish homozygous mutant for disc1, we investigated behaviour and functioning of the hypothalamic-pituitary-interrenal (HPI) axis, the fish equivalent of the hypothalamic-pituitary-adrenal (HPA) axis...
March 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28332203/margins-of-freedom-a-field-theoretic-approach-to-class-based-health-dispositions-and-practices
#2
Patrick John Burnett, Gerry Veenstra
Pierre Bourdieu's theory of practice situates social practices in the relational interplay between experiential mental phenomena (habitus), resources (capitals) and objective social structures (fields). When applied to class-based practices in particular, the overarching field of power within which social classes are potentially made manifest is the primary field of interest. Applying relational statistical techniques to original survey data from Toronto and Vancouver, Canada, we investigated whether smoking, engaging in physical activity and consuming fruit and vegetables are dispersed in a three-dimensional field of power shaped by economic and cultural capitals and cultural dispositions and practices...
March 23, 2017: Sociology of Health & Illness
https://www.readbyqxmd.com/read/28331071/cell-cell-and-cell-ecm-adhesions-cooperate-to-organize-actomyosin-networks-and-maintain-force-transmission-during-dorsal-closure
#3
Katharine Goodwin, Emily E Lostchuck, Kaitlyn M L Cramb, Teresa Zulueta-Coarasa, Rodrigo Fernandez-Gonzalez, Guy Tanentzapf
Tissue morphogenesis relies on the coordinated action of actin networks, cell-cell adhesions, and cell-ECM adhesions. Such coordination can be achieved through crosstalk between cell-cell and cell-ECM adhesions. Drosophila Dorsal Closure (DC), a morphogenetic process wherein an extra-embryonic tissue called the amnioserosa contracts and ingresses to close a discontinuity in the dorsal epidermis of the embryo, requires both cell-cell and cell-ECM adhesions. However, whether the function of these two types of adhesion is coordinated during DC is not known...
March 22, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28321131/does-activation-of-midbrain-dopamine-neurons-promote-or-reduce-feeding
#4
L Boekhoudt, T J M Roelofs, J W de Jong, A E de Leeuw, M C M Luijendijk, I G Wolterink-Donselaar, G van der Plasse, R A H Adan
BACKGROUND: Dopamine (DA) signalling in the brain is necessary for feeding behaviour, and alterations in the DA system have been linked to obesity. However, the precise role of DA in the control of food intake remains debated. On the one hand, food reward and motivation are associated with enhanced DA activity. On the other hand, psychostimulant drugs that increase DA signalling suppress food intake. This poses the questions of how endogenous DA neuronal activity regulates feeding, and whether enhancing DA neuronal activity would either promote or reduce food intake...
March 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28317964/how-does-ytterbium-chloride-interact-with-dmpc-bilayers-a-computational-and-experimental-study
#5
Miguel A Gonzalez, Hanna M G Barriga, Joanna L Richens, Robert V Law, Paul O'Shea, Fernando Bresme
Lanthanide salts have been studied for many years, primarily in Nuclear Magnetic Resonance (NMR) experiments of mixed lipid-protein systems and more recently to study lipid flip-flop in model membrane systems. It is well recognised that lanthanide salts can influence the behaviour of both lipid and protein systems, however a full molecular level description of lipid-lanthanide interactions is still outstanding. Here we present a study of lanthanide-bilayer interactions, using molecular dynamics computer simulations, fluorescence electrostatic potential experiments and nuclear magnetic resonance...
March 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28317138/impact-of-providing-psychiatry-specialty-pharmacist-intervention-on-reducing-drug-related-problems-among-children-with-autism-spectrum-disorder-related-to-disruptive-behavioural-symptoms-a-prospective-randomized-open-label-study
#6
R Wongpakaran, T Suansanae, T Tan-Khum, C Kraivichian, R Ongarjsakulman, C Suthisisang
WHAT IS KNOWN AND OBJECTIVES: Psychopharmacologic therapy has so far focused on ameliorating disruptive behaviours to improve patient's function and quality of life. Due to the complicated neurobiological aetiology of autism spectrum disorder (ASD), a traditional pharmacist intervention may be insufficient to initiate the optimal care for this vulnerable population. We evaluate the impact of providing specialty psychiatry (PS) pharmacist intervention in identifying and resolving drug-related problems (DRPs) among children with ASD associated with disruptive behaviours...
March 20, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28316814/crystal-structure-and-solvent-dependent-behaviours-of-3-amino-1-6-diethyl-2-5-7-trimethyl-4-4-di-phenyl-3a-4a-di-aza-4-bora-s-indacene
#7
Lijing Yang, Brett Drew, Ravi Shekar Yalagala, Rameez Chaviwala, Razvan Simionescu, Alan J Lough, Hongbin Yan
In the title compound (3-amino-4,4-diphenyl-BODIPY), C28H32BN3, the central six-membered ring has a flattened sofa conformation, with one of the N atoms deviating by 0.142 (4) Å from the mean plane of the other five atoms, which have an r.m.s. deviation of 0.015 Å. The dihedral angle between the two essentially planar outer five-membered rings is 8.0 (2)°. In the crystal, mol-ecules are linked via weak N-H⋯π inter-actions, forming chains along [010]. The com-pound displays solvent-dependent behaviours in both NMR and fluorescence spectroscopy...
March 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28303743/incremental-comprehension-of-pitch-relationships-in-written-music-evidence-from-eye-movements
#8
Lauren V Hadley, Patrick Sturt, Tuomas Eerola, Martin J Pickering
To investigate how proficient pianists comprehend pitch relationships in written music when they first encounter it we conducted two experiments in which proficient pianists' eyes were tracked while they read and played single-line melodies. In Experiment 1, participants played at their own speed; in Experiment 2 they played with an external metronome. The melodies were either congruent or anomalous, with the anomaly involving one bar being shifted in pitch to alter the implied harmonic structure (e.g., non-resolution of a dominant)...
March 17, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28298300/differential-processing-of-the-direction-and-focus-of-expansion-of-optic-flow-stimuli-in-areas-mst-and-v3a-of-the-human-visual-cortex
#9
Samantha L Strong, Edward H Silson, Andre D Gouws, Antony B Morland, Declan J McKeefry
Human neuropsychological and neuroimaging studies have raised the possibility that different attributes of optic flow stimuli, namely radial direction and the position of the focus of expansion (FOE), are processed within separate cortical areas. In the human brain, visual areas V5/MT+ and V3A have been proposed as integral to the analysis of these different attributes of optic flow stimuli. In order to establish direct causal relationships between neural activity in V5/MT+ and V3A and the perception of radial motion direction and FOE position, we used Transcranial Magnetic Stimulation (TMS) to disrupt cortical activity in these areas whilst participants performed behavioural tasks dependent on these different aspects of optic flow stimuli...
March 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28298251/impact-of-psychological-health-on-peripheral-endothelial-function-and-the-hpa-axis-activity-in-healthy-adolescents
#10
Yun Chen, Walter Osika, Frida Dangardt, Peter Friberg
BACKGROUND AND AIMS: The development of adolescence psychological health over a 3-year period and its relationship to peripheral endothelial function and the hypothalamic-pituitary-adrenal (HPA)-axis activity were examined in a cohort of healthy adolescents in a longitudinal study. METHODS: A total of 162 adolescents (94 females) participated in both baseline (mean age 14.5 ± 1 years) and three-year follow-up studies. Psychological health was evaluated by self-report using the Beck Youth Inventories of Emotional and Social Impairment and the psychosomatic problem scale...
March 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28297706/phytoplankton-can-actively-diversify-their-migration-strategy-in-response-to-turbulent-cues
#11
Anupam Sengupta, Francesco Carrara, Roman Stocker
Marine phytoplankton inhabit a dynamic environment where turbulence, together with nutrient and light availability, shapes species fitness, succession and selection. Many species of phytoplankton are motile and undertake diel vertical migrations to gain access to nutrient-rich deeper layers at night and well-lit surface waters during the day. Disruption of this migratory strategy by turbulence is considered to be an important cause of the succession between motile and non-motile species when conditions turn turbulent...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28295046/transcriptomic-immaturity-of-the-hippocampus-and-prefrontal-cortex-in-patients-with-alcoholism
#12
Tomoyuki Murano, Hisatsugu Koshimizu, Hideo Hagihara, Tsuyoshi Miyakawa
Alcoholism, which is defined as the recurring harmful use of alcohol despite its negative consequences, has a lifetime prevalence of 17.8%. Previous studies have shown that chronic alcohol consumption disrupts various brain functions and behaviours. However, the precise mechanisms that underlie alcoholism are currently unclear. Recently, we discovered "pseudo-immature" brain cell states of the dentate gyrus and prefrontal cortex (PFC) in mouse models of psychotic disorders and epileptic seizure. Similar pseudo-immaturity has been observed in patients with psychotic disorders, such as schizophrenia and bipolar disorder...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28294135/bidirectional-control-of-anxiety-related-behaviours-in-mice-role-of-inputs-arising-from-the-ventral-hippocampus-to-the-lateral-septum-and-medial-prefrontal-cortex
#13
Gustavo Morrone Parfitt, Robin Nguyen, Jee Yoon Bang, Afif Aqrabawi, Matthew M Tran, D Kanghoon Seo, Blake A Richards, Jun Chul Kim
Anxiety is an adaptive response to potentially threatening situations. Exaggerated and uncontrolled anxiety responses become maladaptive and lead to anxiety disorders. Anxiety is shaped by a network of forebrain structures, including the hippocampus, septum, and prefrontal cortex. In particular, neural inputs arising from the ventral hippocampus (vHPC) to the lateral septum (LS) and medial prefrontal cortex (mPFC) are thought to serve as principal components of the anxiety circuit. However, the role of vHPC-to-LS and vHPC-to-mPFC signals in anxiety is unclear, as no study has directly compared their behavioural contribution at circuit level...
March 15, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28294115/phosphorylation-of-rab-coupling-protein-by-lmtk3-controls-rab14-dependent-epha2-trafficking-to-promote-cell-cell-repulsion
#14
Christine Gundry, Sergi Marco, Elena Rainero, Bryan Miller, Emmanuel Dornier, Louise Mitchell, Patrick T Caswell, Andrew D Campbell, Anna Hogeweg, Owen J Sansom, Jennifer P Morton, Jim C Norman
The Rab GTPase effector, Rab-coupling protein (RCP) is known to promote invasive behaviour in vitro by controlling integrin and receptor tyrosine kinase (RTK) trafficking, but how RCP influences metastasis in vivo is unclear. Here we identify an RTK of the Eph family, EphA2, to be a cargo of an RCP-regulated endocytic pathway which controls cell:cell repulsion and metastasis in vivo. Phosphorylation of RCP at Ser(435) by Lemur tyrosine kinase-3 (LMTK3) and of EphA2 at Ser(897) by Akt are both necessary to promote Rab14-dependent (and Rab11-independent) trafficking of EphA2 which generates cell:cell repulsion events that drive tumour cells apart...
March 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28289547/development-and-refinement-of-a-complex-intervention-within-cardiac-rehabilitation-services-experiences-from-the-cadence-feasibility-study
#15
Rachel Winder, Suzanne H Richards, John L Campbell, David A Richards, Chris Dickens, Manish Gandhi, Christine Wright, Katrina Turner
BACKGROUND: Patients who experience a cardiac event are at higher risk of developing depression than the general population. Despite this, cardiac rehabilitation (CR) programmes do not provide a systematic approach to psychological care for depression. The CADENCE study aimed to develop and pilot an enhanced psychological care (EPC) intervention consisting of behavioural activation (BA) and mental health care coordination. Following original research commissioning guidance, the intervention was planned to be embedded in routine care and delivered by CR nurses to patients with depression attending CR...
2017: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28286179/formation-of-hippocampal-mhtt-aggregates-leads-to-impaired-spatial-memory-hippocampal-activation-and-adult-neurogenesis
#16
L C Schwab, K Richetin, R A Barker, N Déglon
Huntington's disease (HD) is a genetic neurodegenerative disorder characterized by a triad of motor, psychiatric and cognitive deficits with the latter classically attributed to disruption of fronto-striatal circuits. However, emerging evidence suggests that some of the cognitive deficits in HD may have their origin in other structures including the hippocampus. Hippocampal abnormalities have been reported in HD mouse models particularly in terms of performance on the Morris Water Maze. However, in these animals, it is difficult to be certain whether the spatial memory deficits are due to local pathology within this structure or their poor mobility and motivation...
March 9, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28280564/methylation-of-avpr1a-in-the-cortex-of-wild-prairie-voles-effects-of-cpg-position-and-polymorphism
#17
M Okhovat, S M Maguire, S M Phelps
DNA methylation can cause stable changes in neuronal gene expression, but we know little about its role in individual differences in the wild. In this study, we focus on the vasopressin 1a receptor (avpr1a), a gene extensively implicated in vertebrate social behaviour, and explore natural variation in DNA methylation, genetic polymorphism and neuronal gene expression among 30 wild prairie voles (Microtus ochrogaster). Examination of CpG density across 8 kb of the locus revealed two distinct CpG islands overlapping promoter and first exon, characterized by few CpG polymorphisms...
January 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28273853/changes-in-brain-monoamines-underlie-behavioural-disruptions-after-zebrafish-diet-exposure-to-polycyclic-aromatic-hydrocarbons-environmental-mixtures
#18
Caroline Vignet, Verena M Trenkel, Annick Vouillarmet, Giampiero Bricca, Marie-Laure Bégout, Xavier Cousin
Zebrafish were exposed through diet to two environmentally relevant polycyclic aromatic hydrocarbons (PAHs) mixtures of contrasted compositions, one of pyrolytic (PY) origin and one from light crude oil (LO). Monoamine concentrations were quantified in the brains of the fish after six month of exposure. A significant decrease in noradrenaline (NA) was observed in fish exposed to both mixtures, while a decrease in serotonin (5HT) and dopamine (DA) was observed only in LO-exposed fish. A decrease in metabolites of 5HT and DA was observed in fish exposed to both mixtures...
March 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28268256/cannabidiol-regulation-of-emotion-and-emotional-memory-processing-relevance-for-treating-anxiety-related-and-substance-abuse-disorders
#19
REVIEW
Jonathan L C Lee, Leandro J Bertoglio, Francisco S Guimarães, Carl W Stevenson
Learning to associate cues or contexts with potential threats or rewards is adaptive and enhances survival. Both aversive and appetitive memories are therefore powerful drivers of behaviour, but the inappropriate expression of conditioned responding to fear- and drug-related stimuli can develop into anxiety-related and substance abuse disorders respectively. These disorders are associated with abnormally persistent emotional memories and inadequate treatment, often leading to symptom relapse. Studies show that cannabidiol, the main non-psychotomimetic phytocannabinoid found in Cannabis sativa, reduces anxiety via 5-HT1A and (indirect) cannabinoid receptor activation in paradigms assessing innate responses to threat...
March 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28266608/human-amniotic-fluid-contaminants-alter-thyroid-hormone-signalling-and-early-brain-development-in-xenopus-embryos
#20
Jean-Baptiste Fini, Bilal B Mughal, Sébastien Le Mével, Michelle Leemans, Mélodie Lettmann, Petra Spirhanzlova, Pierre Affaticati, Arnim Jenett, Barbara A Demeneix
Thyroid hormones are essential for normal brain development in vertebrates. In humans, abnormal maternal thyroid hormone levels during early pregnancy are associated with decreased offspring IQ and modified brain structure. As numerous environmental chemicals disrupt thyroid hormone signalling, we questioned whether exposure to ubiquitous chemicals affects thyroid hormone responses during early neurogenesis. We established a mixture of 15 common chemicals at concentrations reported in human amniotic fluid. An in vivo larval reporter (GFP) assay served to determine integrated thyroid hormone transcriptional responses...
March 7, 2017: Scientific Reports
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