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https://www.readbyqxmd.com/read/28549123/working-conditions-in-the-explanation-of-occupational-inequalities-in-sickness-absence-in-the-french-sumer-study
#1
Isabelle Niedhammer, Thomas Lesuffleur, Sarah Memmi, Jean-François Chastang
: Explanations of social inequalities in sickness absence are lacking in the literature. Our objectives were to evaluate the contribution of various occupational exposures in explaining these inequalities in a national representative sample of employees. : The study was based on the cross-sectional sample of the SUMER 2010 survey that included 46 962 employees, 26 883 men and 20 079 women. Both sickness absence spells and days within the last 12 months, as health indicators, were studied. Occupation was used as a marker of social position...
May 25, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28549063/food-addiction-and-obesity-unnecessary-medicalization-of-hedonic-overeating
#2
REVIEW
Graham Finlayson
The concept of addiction is loaded with connotations and is often used for its political as much as its medical utility. The scientific case for 'food addiction' as a clinical phenotype currently rests on its association with generic diagnostic criteria for substance-related disorders being applied to everyday foods and eating-related problems. This has fused the concept of obesity with addiction regardless of whether it fits the definition. The hedonic, or reward, system can account for the ingestion of foods and drugs, confirming that they share neural substrates that differentiate liking and wanting...
May 26, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28548226/multimodal-connectivity-based-parcellation-reveals-a-shell-core-dichotomy-of-the-human-nucleus-accumbens
#3
Xiaoluan Xia, Lingzhong Fan, Chen Cheng, Simon B Eickhoff, Junjie Chen, Haifang Li, Tianzi Jiang
The subdifferentiation of the nucleus accumbens (NAc) has been extensively studied using neuroanatomy and histochemistry, yielding a well-accepted dichotomic shell/core architecture that reflects dissociable roles, such as in reward and aversion, respectively. However, in vivo parcellation of these structures in humans has been rare, potentially impairing future research into the structural and functional characteristics and alterations of putative NAc subregions. Here, we used three complementary parcellation schemes based on tractography, task-independent functional connectivity, and task-dependent co-activation to investigate the regional differentiation within the NAc...
May 26, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28547854/nucleus-accumbens-functional-connectivity-at-age-20-is-associated-with-trajectory-of-adolescent-cannabis-use-and-predicts-psychosocial-functioning-in-young-adulthood
#4
Sarah D Lichenstein, Samuel Musselman, Daniel S Shaw, Stephanie Sitnick, Erika E Forbes
AIMS: To identify trajectories of cannabis use across adolescence, 2) to measure the influence of cannabis use characteristics on functional connectivity of the nucleus accumbens (NAcc), and 3) to assess whether patterns of functional connectivity related to cannabis use are associated with psychosocial functioning 2 years later. DESIGN: The Pitt Mother & Child Project (PMCP) is a prospective, longitudinal study of male youth at high risk for psychopathology based on family income and gender...
May 26, 2017: Addiction
https://www.readbyqxmd.com/read/28547130/extracellular-dopamine-acetylcholine-and-activation-of-dopamine-d1-and-d2-receptors-after-selective-breeding-for-cocaine-self-administration-in-rats
#5
Haiyang Xu, Sasmita Das, Marc Sturgill, Colin Hodgkinson, Qiaoping Yuan, David Goldman, Kenneth Grasing
RATIONALE: The low self-administration (LS)/Kgras (LS) and high self-administration (HS)/Kgras (HS) rat lines were generated by selective breeding for low- and high-intravenous cocaine self-administration, respectively, from a common outbred Wistar stock (Crl:WI). This trait has remained stable after 13 generations of breeding. OBJECTIVE: The objective of the present study is to compare cocaine preference, neurotransmitter release, and dopamine receptor activation in LS and HS rats...
May 26, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28547127/the-relationship-between-outcome-prediction-and-cognitive-fatigue-a-convergence-of-paradigms
#6
G R Wylie, H M Genova, J DeLuca, E Dobryakova
Cognitive fatigue is common after strenuous cognitive effort. A large body of literature has implicated a network of brain areas in fatigue, including the basal ganglia and cortical areas including ventro-medal prefrontal cortex and anterior cingulate cortex (ACC). Furthermore, the ACC has been shown to be involved in processes such as error and conflict monitoring, outcome prediction, and effort processing. Thus, the ACC appears to be one common denominator between clinical work on fatigue and research on outcome prediction and effort...
May 25, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28546648/differences-in-delay-but-not-probability-discounting-in-current-smokers-e-cigarette-users-and-never-smokers
#7
Wojciech Białaszek, Przemysław Marcowski, David J Cox
Steeper delay discounting in substance abuse populations, compared to non-abusing populations, has been well-established in prior studies. Despite the growing interest in e-cigarettes as a novel and relatively understudied form of nicotine consumption, relatively little is known as to how e-cigarette users discount rewards compared to traditional cigarette smokers and never smokers. In the present study, we measured delay and probability discounting rates, as well as perceived risk inherent to a delayed reward, in current traditional cigarette smokers, e-cigarette users, and never smokers...
2017: Psychological Record
https://www.readbyqxmd.com/read/28546312/prefrontal-dopamine-d1-and-d2-receptors-regulate-dissociable-aspects-of-decision-making-via-distinct-ventral-striatal-and-amygdalar-circuits
#8
Nicole L Jenni, Joshua D Larkin, Stan B Floresco
Mesocortical dopamine (DA) regulates a variety of cognitive functions via actions on D1 and/or D2 receptors. For example, risk/reward decision making is differentially modulated by these two receptors within the prefrontal cortex (PFC), with D2 receptors enabling flexible decision making and D1 receptors promoting persistence in choice biases. Yet, it is unclear how DA mediates opposing patterns of behavior by acting on different receptors within the same terminal region. We explored the possibility that DA may act on separate networks of PFC neurons that are modulated by D1 or D2 receptors and in turn interface with divergent downstream structures, such as the basolateral amygdala (BLA) or nucleus accumbens (NAc)...
May 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28545006/cognitive-control-and-reward-loss-processing-in-internet-gaming-disorder-results-from-a-comparison-with-recreational-internet-game-users
#9
G Dong, H Li, L Wang, M N Potenza
Although playing of Internet games may lead to Internet gaming disorder (IGD), most game-users do not develop problems and only a relatively small subset experiences IGD. Game playing may have positive health associations, whereas IGD has been repeatedly associated with negative health measures, and it is thus important to understand differences between individuals with IGD, recreational (non-problematic) game use (RGU) and non-/low-frequency game use (NLFGU). Individuals with IGD have shown differences in neural activations from non-gamers, yet few studies have examined neural differences between individuals with IGD, RGU and NLFGU...
March 30, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28544993/muscarinic-receptor-m4-positive-allosteric-modulators-attenuate-central-effects-of-cocaine
#10
Camilla Dall, Pia Weikop, Ditte Dencker, Anna C Molander, Gitta Wörtwein, P Jeffrey Conn, Anders Fink-Jensen, Morgane Thomsen
BACKGROUND: Cocaine addiction is a chronic brain disease affecting neurotransmission. Muscarinic cholinergic receptors modulate dopaminergic signaling in the reward system, and muscarinic receptor stimulation can block direct reinforcing effects of cocaine. Here, we tested the hypothesis that specific muscarinic M4 receptor stimulation can attenuate the discriminative stimulus effects and conditioned rewarding effects of cocaine, measures believed to predict the ability of cocaine and cocaine-associated cues to elicit relapse to drug taking...
May 16, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28544391/the-experience-sampling-method-as-an-mhealth-tool-to-support-self-monitoring-self-insight-and-personalized-health-care-in-clinical-practice
#11
Jim van Os, Simone Verhagen, Anne Marsman, Frenk Peeters, Maarten Bak, Machteld Marcelis, Marjan Drukker, Ulrich Reininghaus, Nele Jacobs, Tineke Lataster, Claudia Simons, Richel Lousberg, Sinan Gülöksüz, Carsten Leue, Peter C Groot, Wolfgang Viechtbauer, Philippe Delespaul
BACKGROUND: The experience sampling method (ESM) builds an intensive time series of experiences and contexts in the flow of daily life, typically consisting of around 70 reports, collected at 8-10 random time points per day over a period of up to 10 days. METHODS: With the advent of widespread smartphone use, ESM can be used in routine clinical practice. Multiple examples of ESM data collections across different patient groups and settings are shown and discussed, varying from an ESM evaluation of a 6-week randomized trial of mindfulness, to a twin study on emotion dynamics in daily life...
May 23, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28544380/extending-the-two-process-model-of-burnout-in-child-protection-workers-the-role-of-resilience-in-mediating-burnout-via-organizational-factors-of-control-values-fairness-reward-workload-and-community-relationships
#12
Paula McFadden, John Mallett, Michael Leiter
Burnout has been disproportionally reported in child protection social work. This paper presents data from 162 child protection staff in Northern Ireland, assessed for burnout using the Maslach Burnout Inventory. Path models were estimated, based on an extension of the two-process demands and values model (Leiter, ) to include additional measures of resilience using the Resilience Scale-14, as well as perceived rewards and sense of community from the Areas of Work Life Scale (Leiter, ). Optimal model fit was achieved by modelling resilience as a mediator of the relationship between organizational factors of control and value congruence and burnout...
May 23, 2017: Stress and Health: Journal of the International Society for the Investigation of Stress
https://www.readbyqxmd.com/read/28544009/a-cluster-randomised-controlled-trial-evaluating-the-effects-of-delaying-onset-of-adolescent-substance-abuse-on-cognitive-development-and-addiction-following-a-selective-personality-targeted-intervention-program-the-co-venture-trial
#13
Maeve O'Leary-Barrett, Benoit Mâsse, Robert Pihl, Sherry Stewart, Jean R Séguin, Patricia Conrod
AIMS: Substance use and binge drinking during early adolescence are associated with neurocognitive abnormalities, mental health problems and an increased risk for future addiction. The trial aims to evaluate the protective effects of an evidence-based substance use prevention program on the onset of alcohol and drug use in adolescence, as well as on cognitive, mental health and addiction outcomes over 5 years. DESIGN: Thirty-eight high schools will be recruited, with a final sample of 31 schools assigned to intervention or control conditions (approximately 3800 youth)...
May 21, 2017: Addiction
https://www.readbyqxmd.com/read/28543944/anterior-cingulate-cortex-supports-effort-allocation-toward-a-qualitatively-preferred-option
#14
Evan E Hart, Julian O Gerson, Yael Zoken, Marisella Garcia, Alicia Izquierdo
The anterior cingulate cortex (ACC) is known to be involved in effortful choice, yet its role in cost-benefit evaluation of qualitatively different rewards (more/less preferred), beyond magnitude differences (larger/smaller), is poorly understood. Selecting between qualitatively different options is a decision type commonly faced by humans. Here we assessed the role of ACC on a task that has primarily been used to probe striatal function in motivation. Rats were trained to stable performance on a progressive ratio schedule for sucrose pellets and were then given sham surgeries (control) or excitotoxic NMDA-lesions of ACC...
May 20, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28543936/counselling-parents-on-young-children-s-healthy-diet-a-modified-scoping-review
#15
REVIEW
Bettina Holmberg Fagerlund, Sølvi Helseth, Jenny Owe, Kari Glavin
AIMS AND OBJECTIVES: To map and describe key information in existing research about counselling of parents of children aged 0-2 years on the child's healthy diet in preventive health care settings, particularly in public health nursing. BACKGROUND: Many parents are likely to be concerned with their infant's food-related happiness "here and now", disregarding the child's long-term health and development related to feeding practices. Hence, a focus on counselling parents in considering young children's healthy diet is important...
May 25, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28543630/preliminary-validation-of-the-perceived-locus-of-causality-scale-for-academic-motivation-in-the-context-of-university-studies-ploc-u
#16
Manuel Sánchez de Miguel, Izarne Lizaso, Daniel Hermosilla, Carlos-Maria Alcover, Marios Goudas, Enrique Arranz-Freijó
BACKGROUND: Research has shown that self-determination theory can be useful in the study of motivation in sport and other forms of physical activity. The Perceived Locus of Causality (PLOC) scale was originally designed to study both. AIM: The current research presents and validates the new PLOC-U scale to measure academic motivation in the university context. We tested levels of self-determination before and after academic examinations. Also, we analysed degree of internalization of extrinsic motivation in students' practical activities...
May 25, 2017: British Journal of Educational Psychology
https://www.readbyqxmd.com/read/28542927/research-review-what-do-we-know-about-psychopathic-traits-in-children
#17
Randall T Salekin
BACKGROUND: Research on the topic of child psychopathy has advanced over the past decade increasing what we know. METHOD: This qualitative review examines the research base for child psychopathy and emphasizes its three dimensions: grandiose-manipulative, callous-unemotional, and daring-impulsive. Literature is reviewed addressing the cognitive, emotional, motivational, personality, parenting, and biological correlates. RESULTS: Support has emerged for the phenotypic construct of child psychopathy, while questions remain regarding definitional issues and key external correlates (e...
May 24, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28542919/context-dependent-colonization-dynamics-regional-reward-contagion-drives-local-compression-in-aquatic-beetles
#18
Matthew R Pintar, William J Resetarits
1.Habitat selection by colonizing organisms is an important factor in determining species abundance and community dynamics at multiple spatial scales. Many organisms select habitat patches based on intrinsic patch quality, but patches exist in complex landscapes linked by dispersal and colonization, forming metapopulations and metacommunities. Perceived patch quality can be influenced by neighboring patches through spatial contagion, wherein perceived quality of one patch can extend beyond its borders and either increase or decrease the colonization of neighboring patches and localities...
May 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542639/rodents-and-humans-are-able-to-detect-the-odour-of-l-lactate
#19
Valentina Mosienko, Andy J Chang, Natalia Alenina, Anja G Teschemacher, Sergey Kasparov
L-Lactate (LL) is an essential cellular metabolite which can be used to generate energy. In addition, accumulating evidence suggests that LL is used for inter-cellular signalling. Some LL-sensitive receptors have been identified but we recently proposed that there may be yet another unknown G-protein coupled receptor (GPCR) sensitive to LL in the brain. Olfactory receptors (ORs) represent the largest family of GPCRs and some of them are expressed outside the olfactory system, including brain, making them interesting candidates for non-olfactory LL signalling...
2017: PloS One
https://www.readbyqxmd.com/read/28542619/perceptions-of-primary-and-secondary-relationships-in-polyamory
#20
Rhonda N Balzarini, Lorne Campbell, Taylor Kohut, Bjarne M Holmes, Justin J Lehmiller, Jennifer J Harman, Nicole Atkins
In consensually non-monogamous relationships there is an open agreement that one, both, or all individuals involved in a romantic relationship may also have other sexual and/or romantic partners. Research concerning consensual non-monogamy has grown recently but has just begun to determine how relationships amongst partners in consensually non-monogamous arrangements may vary. The current research examines this issue within one type of consensual non-monogamy, specifically polyamory, using a convenience sample of 1,308 self-identified polyamorous individuals who provided responses to various indices of relationship evaluation (e...
2017: PloS One
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