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https://www.readbyqxmd.com/read/28646260/salt-appetite-and-the-influence-of-opioids
#1
Craig M Smith, Andrew J Lawrence
Due to the biological importance of sodium and its relative scarcity within many natural environments, 'salt appetite' has evolved whereby dietary salt is highly sought after and palatable when tasted. In addition to peripheral responses, salt depletion is detected within the brain via circumventricular organs and 11β-hydroxysteroid dehydrogenase type 2 (HSD2) neurons to increase salt appetite. Salt appetite is comprised of two main components. One component is the incentive salience or motivation for salt (i...
June 24, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28632961/increased-neural-response-to-social-rejection-in-major-depression
#2
Poornima Kumar, Gordon D Waiter, Magda Dubois, Maarten Milders, Ian Reid, J Douglas Steele
BACKGROUND: Being a part of community is critical for survival and individuals with major depressive disorder (MDD) have a greater sensitivity to interpersonal stress that makes them vulnerable to future episodes. Social rejection is a critical risk factor for depression and it is said to increase interpersonal stress and thereby impairing social functioning. It is therefore critical to understand the neural correlates of social rejection in MDD. METHODS: To this end, we scanned 15 medicated MDD and 17 healthy individuals during a modified cyberball passing game, where participants were exposed to increasing levels of social exclusion...
June 20, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28622391/neuronal-substrates-underlying-stress-resilience-and-susceptibility-in-rats
#3
Fabia Febbraro, Katrine Svenningsen, Thao Phuong Tran, Ove Wiborg
BACKGROUND: Stress and stressful life events have repeatedly been shown as causally related to depression. The Chronic Mild Stress rat model is a valid model of stress-induced depression. Like humans, rats display great heterogeneity in their response to stress and adversity. Hence some individuals are stress-sensitive and prone to develop depression-like behaviour in response to modest stressors, while others are stress-resilient and remain essentially symptom free. OBJECTIVES: Compared to the large body of research, which describes stress-induced maladaptive neurobiological changes, relatively little attention has been devoted to understand resiliency to stress...
2017: PloS One
https://www.readbyqxmd.com/read/28614447/package-design-and-nutritional-profile-of-foods-targeted-at-children-in-supermarkets-in-montevideo-uruguay
#4
Ana Giménez, Luis de Saldamando, María Rosa Curutchet, Gastón Ares
Marketing of unhealthy products has been identified as one of the main characteristics of the food environment that negatively affects children's eating patterns. Restrictions on advertising of unhealthy foods to children have already been imposed in different countries. However, marketing strategies are not limited to broadcast and digital advertising, but also include package design. In this context, the current study aimed to describe the food products targeted at children and sold in supermarkets in Montevideo, Uruguay, in terms of package design and nutrient profile...
June 12, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28611704/passion-trait-self-control-and-wellbeing-comparing-two-mediation-models-predicting-wellbeing
#5
Walid Briki
Research has found that passion and trait self-control represented key determinants of wellbeing. Yet, no study to date has attempted to investigate the mediating influences of trait self-control and passion for accounting for the relationships between passion, trait self-control, and wellbeing (dependent variable). Using different frameworks, such as the dualistic model of passion and the neo-socioanalytic theory, the present study proposed two mediation models, considering either trait self-control (model 1) or passion (model 2) as the mediating variable...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28606563/participants-with-pharmacologically-impaired-taste-function-seek-out-more-intense-higher-calorie-stimuli
#6
Corinna A Noel, Meaghan Sugrue, Robin Dando
OBJECTIVE: Research suggests a weaker sense of taste in people with obesity, with the assumption that a debilitated taste response increases the desire for more intensely tasting stimuli to compensate for decreased taste input. However, empirical testing of this supposition remains largely absent. METHOD: In a randomized, repeated measures design, 51 healthy subjects were treated with varying concentrations of a tea containing Gymnema sylvestre (GS), to temporarily and selectively diminish sweet taste perception, or a control tea...
June 9, 2017: Appetite
https://www.readbyqxmd.com/read/28603983/food-components-in-health-promotion-and-disease-prevention
#7
Wolfgang Langhans
The current obesity epidemic with its deleterious effects on public health, and the increase in the prevalence of non-communicable diseases in our aging society have dramatically increased public awareness of nutrition-related health issues. Food components such as fat, sugar, flavors and spices are major determinants of the hedonic value of food, and the constant and almost ubiquitous availability of good-tasting food in our affluent societies promotes overeating and weight gain. On the other hand, several food components, including flavoring compounds and the active ingredients of many plants including spices and herbs (e...
June 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28602690/dorsal-raphe-dopamine-neurons-modulate-arousal-and-promote-wakefulness-by-salient-stimuli
#8
Jounhong Ryan Cho, Jennifer B Treweek, J Elliott Robinson, Cheng Xiao, Lindsay R Bremner, Alon Greenbaum, Viviana Gradinaru
Ventral midbrain dopamine (DA) is unambiguously involved in motivation and behavioral arousal, yet the contributions of other DA populations to these processes are poorly understood. Here, we demonstrate that the dorsal raphe nucleus DA neurons are critical modulators of behavioral arousal and sleep-wake patterning. Using simultaneous fiber photometry and polysomnography, we observed time-delineated dorsal raphe nucleus dopaminergic (DRN(DA)) activity upon exposure to arousal-evoking salient cues, irrespective of their hedonic valence...
June 7, 2017: Neuron
https://www.readbyqxmd.com/read/28590810/worth-the-wait-leisure-can-be-just-as-enjoyable-with-work-left-undone
#9
Ed O'Brien, Ellen Roney
Four studies reveal that (a) people hold a robust intuition about the order of work and leisure and that (b) this intuition is sometimes mistaken. People prefer saving leisure for last, believing they would otherwise be distracted by looming work (Study 1). In controlled experiments, however, although subjects thought their enjoyment would be spoiled when they played a game before rather than after a laborious problem-solving task, got a massage before rather than after midterms, and consumed snacks and watched videos before rather than after a stressful performance, in reality these experiences were similarly enjoyable regardless of order (Studies 2 through 4)...
June 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28588508/individual-differences-in-subjective-utility-and-risk-preferences-the-influence-of-hedonic-capacity-and-trait-anxiety
#10
Jonathon R Howlett, Martin P Paulus
Individual differences in decision-making are important in both normal populations and psychiatric conditions. Variability in decision-making could be mediated by different subjective utilities or by other processes. For example, while traditional economic accounts attribute risk aversion to a concave subjective utility curve, in practice other factors could affect risk behavior. This distinction may have important implications for understanding the biological basis of variability in decision-making and for developing interventions to improve decision-making...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28581323/everyday-prosociality-in-the-workplace-the-reinforcing-benefits-of-giving-getting-and-glimpsing
#11
Joseph Chancellor, Seth Margolis, Katherine Jacobs Bao, Sonja Lyubomirsky
A functional analysis of prosociality considers how predispositions for prosocial behavior prompt, reinforce, and propagate kind behaviors in the real world. To examine the effects of practicing, receiving, and observing everyday prosociality-as well as the mechanisms underlying these effects-we randomly assigned employees in a Spanish corporate workplace (N = 111) to be Givers, Receivers, and Controls. Givers practiced 5 acts of kindness for a personalized list of Receivers over 4 weeks. We found that Givers and Receivers mutually benefited in well-being in both the short-term (e...
June 5, 2017: Emotion
https://www.readbyqxmd.com/read/28580708/how-the-brain-codes-intimacy-the-neurobiological-substrates-of-romantic-touch
#12
Ann-Kathrin Kreuder, Dirk Scheele, Lea Wassermann, Michael Wollseifer, Birgit Stoffel-Wagner, Mary R Lee, Juergen Hennig, Wolfgang Maier, René Hurlemann
Humans belong to a minority of mammalian species that exhibit monogamous pair-bonds, thereby enabling biparental care of offspring. The high reward value of interpersonal closeness and touch in couples is a key proximate mechanism facilitating the maintenance of enduring romantic bonds. However, surprisingly, the neurobiological underpinnings mediating the unique experience of a romantic partner's touch remain unknown. In this randomized placebo (PLC)-controlled, between-group, pharmacofunctional magnetic resonance imaging (fMRI) study involving 192 healthy volunteers (96 heterosexual couples), we intranasally administered 24 IU of the hypothalamic peptide oxytocin (OXT) to either the man or the woman...
June 5, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28579186/endocannabinoid-modulation-of-homeostatic-and-non-homeostatic-feeding-circuits
#13
REVIEW
Benjamin K Lau, Daniela Cota, Luigia Cristino, Stephanie L Borgland
The endocannabinoid system has emerged as a key player in the control of eating. Endocannabinoids, including 2-arachidonoylglycerol (2-AG) and anandamide (AEA), modulate neuronal activity via cannabinoid 1 receptors (CB1Rs) in multiple nuclei of the hypothalamus to induce or inhibit food intake depending on nutritional and hormonal status, suggesting that endocannabinoids may act in the hypothalamus to integrate different types of signals informing about the animal's energy needs. In the mesocorticolimbic system, (endo)cannabinoids modulate synaptic transmission to promote dopamine release in response to palatable food...
June 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28578063/aroma-related-cross-modal-interactions-for-sugar-reduction-in-milk-desserts-influence-on-consumer-perception
#14
Florencia Alcaire, Lucía Antúnez, Leticia Vidal, Ana Giménez, Gastón Ares
Reformulation of industrialized products has been regarded as one of the most cost-effective strategies to reduce sugar intake. Although non-nutritive sweeteners have been extensively used to reduce the added sugar content of these products, increasing evidence about the existence of compensatory energy intake mechanisms makes it necessary to develop alternative strategies to achieve rapid sugar reductions. In this context, the aim of the present work was to evaluate aroma-related cross modal interactions for sugar reduction in vanilla milk desserts...
July 2017: Food Research International
https://www.readbyqxmd.com/read/28578042/visual-attention-to-food-cues-is-differentially-modulated-by-gustatory-hedonic-and-post-ingestive-attributes
#15
David Garcia-Burgos, Junpeng Lao, Simone Munsch, Roberto Caldara
Although attentional biases towards food cues may play a critical role in food choices and eating behaviours, it remains largely unexplored which specific food attribute governs visual attentional deployment. The allocation of visual attention might be modulated by anticipatory postingestive consequences, from taste sensations derived from eating itself, or both. Therefore, in order to obtain a comprehensive understanding of the attentional mechanisms involved in the processing of food-related cues, we recorded the eye movements to five categories of well-standardised pictures: neutral non-food, high-calorie, good taste, distaste and dangerous food...
July 2017: Food Research International
https://www.readbyqxmd.com/read/28572942/sensory-optimization-of-crackers-developed-from-high-quality-cassava-flour-starch-and-prawn-powder
#16
Paa T Akonor, Nanam T Dziedzoave, Evelyn S Buckman, Edna Mireku Essel, Francis Lavoe, Keith I Tomlins
Crackers produced from high-quality cassava flour (HQCF), cassava starch, and prawn powder were optimized based on sensory preference testing. Ten different formulations of crackers were produced using mixture design. These were subjected to sensory evaluation using attributes such as taste, crispiness, puffiness, and acceptability on a 7-point hedonic scale. A mean score of 4.7, 5.6, 5.2, and 5.2 was obtained correspondingly for taste, crispiness, puffiness, and acceptability. Scores for these attributes indicated that the crackers were acceptable...
May 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28572927/a-sensory-assessment-of-color-and-textural-quality-of-refrigerated-tomatoes-preserved-with-different-concentrations-of-potassium-permanganate
#17
Victor C Wabali, Akpevwe Esiri, Leelee Zitte
Freshly harvested mature tomato fruits were treated with different concentrations of potassium permanganate to evaluate their effect on color and texture of the fruits. This was to determine the degree of acceptability and shelf life of the tomatoes. Fifty grams of mature unripe tomato fruits was washed and weighed into a transparent plastic container containing different concentrations of potassium permanganate (control, 2.5 ppm, 5.0 ppm, 7.5 ppm. 10.0 ppm, 12.5 ppm, and 15.0 ppm). The experiment was carried out in a complete randomized design and replicated four times...
May 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28570438/surgically-induced-changes-in-gut-microbiome-and-hedonic-eating-as-related-to-weight-loss-preliminary-findings-in-obese-women-undergoing-bariatric-surgery
#18
Claudia P Sanmiguel, Jonathan Jacobs, Arpana Gupta, Tiffany Ju, Jean Stains, Kristen Coveleskie, Venu Lagishetty, Anna Balioukova, Yijun Chen, Erik Dutson, Emeran Mayer, Jennifer S Labus
OBJECTIVE: Weight-loss surgery results in significant changes in the anatomy, function and intraluminal environment of the gastrointestinal tract affecting the gut microbiome. While bariatric surgery results in sustained weight loss, decreased appetite and hedonic eating; it is unknown if the surgery-induced alterations in gut microbiota play a role in the observed changes in hedonic eating. We explored the following hypotheses 1) Laparoscopic sleeve gastrectomy results in changes in gut microbial composition ; 2) Alterations in gut microbiota are related to weight loss; 3) Alterations in gut microbiome are associated with changes in appetite and hedonic eating...
May 30, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28570105/understanding-consumer-interaction-on-instagram-the-role-of-satisfaction-hedonism-and-content-characteristics
#19
Luis V Casaló, Carlos Flavián, Sergio Ibáñez-Sánchez
The increasing relevance of Instagram and its growing adoption among top brands suggest an effort to better understand consumers' behaviors within this context. The purpose of this study is to examine the role of perceived hedonism and satisfaction in determining consumers' intentions to interact and their actual interaction behaviors (the number of likes, by tapping a heart icon, and comments) in a brand's official Instagram account. Also, we investigate the effect of consumer perceptions about the characteristics of the content generated in the account (perceived originality, quantity, and quality) on their perceived hedonism and satisfaction...
June 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/28564556/brain-on-fire-incentive-salience-hedonic-hot-spots-dopamine-obesity-and-other-hunger-games
#20
Jameason D Cameron, Jean-Philippe Chaput, Anders M Sjödin, Gary S Goldfield
This review examines human feeding behavior in light of psychological motivational theory and highlights the importance of midbrain dopamine (DA). Prospective evidence of both reward surfeit and reward deficit pathways to increased body weight are evaluated, and we argue that it is more complex than an either/or scenario when examining DA's role in reward sensitivity, eating, and obesity. The Taq1A genotype is a common thread that ties the contrasting models of DA reward and obesity; this genotype related to striatal DA is not associated with obesity class per se but may nevertheless confer an increased risk of weight gain...
May 31, 2017: Annual Review of Nutrition
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