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https://www.readbyqxmd.com/read/28331554/altered-functional-resting-state-hypothalamic-connectivity-and-abnormal-pituitary-morphology-in-children-with-prader-willi-syndrome
#1
Akvile Lukoshe, Suzanne E van Dijk, Gerbrich E van den Bosch, Aad van der Lugt, Tonya White, Anita C Hokken-Koelega
BACKGROUND: Prader-Willi syndrome (PWS) is a complex neurodevelopmental disorder, characterized by endocrine problems and hyperphagia, indicating hypothalamic-pituitary dysfunction. However, few studies have explored the underlying neurobiology of the hypothalamus and its functional connectivity with other brain regions. Thus, the aim of this study was to examine the anatomical differences of the hypothalamus, mammillary bodies, and pituitary gland as well as resting state functional connectivity of the hypothalamus in children with PWS...
2017: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/28331454/family-based-behavioral-treatment-for-childhood-obesity-caretaker-reported-barriers-and-facilitators
#2
Amanda E Staiano, Arwen M Marker, James Comeaux, Johannah M Frelier, Daniel S Hsia, Stephanie T Broyles
BACKGROUND: Family-based behavioral treatments are effective ways to promote children's weight management through healthy eating and exercise. However, programs typically have high attrition and low attendance. The aim of this study was to obtain in-depth caregiver input on barriers and facilitators to participate in a family-based, behavioral childhood obesity treatment program. METHODS: Three focus groups were facilitated among 21 parents/guardians at 2 school-based health centers and 1 federally qualified health center...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28330706/eating-dependence-and-weight-gain-no-human-evidence-for-a-sugar-addiction-model-of-overweight
#3
C Rob Markus, Peter J Rogers, Fred Brouns, Robbie Schepers
BACKGROUND AND AIMS: There is an increasing societal concern that consumption of specific foods such as sugar might become 'addictive' and, hence, promote weight gain. Claims about the addictiveness of sugar however are based largely on findings from few animal studies, whereas there is a lack of direct human evidence for symptoms of sugar-related substance dependence. The current study examined in a large sample of human participants whether foods mainly containing sugar in particular might cause 'addiction-like' problems that meet clinical DSM criteria for substance dependence, and, also whether in turn this relates to body weight and negative affectivity (depressed mood)...
March 18, 2017: Appetite
https://www.readbyqxmd.com/read/28325973/building-a-database-for-long-term-monitoring-of-benthic-macrofauna-in-the-pertuis-charentais-2004-2014
#4
Anne S Philippe, Christine Plumejeaud-Perreau, Jérôme Jourde, Philippe Pineau, Nicolas Lachaussée, Emmanuel Joyeux, Frédéric Corre, Philippe Delaporte, Pierrick Bocher
BACKGROUND: Long-term benthic monitoring is rewarding in terms of science, but labour-intensive, whether in the field, the laboratory, or behind the computer. Building and managing databases require multiple skills, including consistency over time as well as organisation via a systematic approach. Here, we introduce and share our spatially explicit benthic database, comprising 11 years of benthic data. It is the result of intensive benthic sampling that has been conducted on a regular grid (259 stations) covering the intertidal mudflats of the Pertuis-Charentais (Marennes-Oléron Bay and Aiguillon Bay)...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28322236/the-role-of-mesolimbic-reward-neurocircuitry-in-prevention-and-rescue-of-the-activity-based-anorexia-aba-phenotype-in-rats
#5
Claire J Foldi, Laura K Milton, Brian J Oldfield
Patients suffering anorexia nervosa (AN) become anhedonic; unable or unwilling to derive normal pleasures and avoid rewarding outcomes, most profoundly in food intake. The activity-based anorexia (ABA) model recapitulates many of the characteristics of the human condition, including anhedonia, and allows investigation of the underlying neurobiology of AN. The potential for increased neuronal activity in reward/hedonic circuits to prevent and rescue weight loss is investigated in this model. The mesolimbic pathway extending from the ventral tegmental area (VTA) to the nucleus accumbens (NAc) was activated using a dual viral strategy, involving retrograde transport of Cre (CAV2-Cre) to the VTA and coincident injection of DREADD receptors (AAV-hSyn-DIO-hM3D(Gq)-mCherry)...
March 21, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28321607/it-s-in-the-eye-of-the-beholder-selective-attention-to-drink-properties-during-tasting-influences-brain-activation-in-gustatory-and-reward-regions
#6
Inge van Rijn, Cees de Graaf, Paul A M Smeets
Statements regarding pleasantness, taste intensity or caloric content on a food label may influence the attention consumers pay to such characteristics during consumption. There is little research on the effects of selective attention on taste perception and associated brain activation in regular drinks. The aim of this study was to investigate the effect of selective attention on hedonics, intensity and caloric content on brain responses during tasting drinks. Using functional MRI brain responses of 27 women were measured while they paid attention to the intensity, pleasantness or caloric content of fruit juice, tomato juice and water...
March 20, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28321131/does-activation-of-midbrain-dopamine-neurons-promote-or-reduce-feeding
#7
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/28302575/male-rats-play-a-repeated-donation-game
#8
Grace Li, Ruth I Wood
While previous studies have demonstrated direct and generalized reciprocity in female Norway rats [26], the present study determined if unrelated male laboratory rats respond on behalf of a partner in an iterated sequential game. Pairs of rats worked for food reward in an operant chamber, where participants alternated as Donor and Responder in successive trials. In each trial, the Donor chose between variable and constant reward levers, where the constant reward lever delivered 1 pellet, and the variable reward lever triggered insertion of Responder lever(s); the Donor received 2 pellets when the Responder made any response...
March 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28301189/differential-effects-of-neural-inactivation-of-the-dorsolateral-striatum-on-response-and-latent-extinction
#9
Jarid Goodman, Amanda Gabriele, Mark G Packard
The present study examined the role of the dorsolateral striatum (DLS) in extinction behavior. Male Long-Evans rats were initially trained on the straight alley maze, in which they were reinforced to traverse a straight runway and retrieve food reward at the opposite end of the maze. After initial acquisition, animals were given extinction training using 1 of 2 distinct protocols: response extinction or latent extinction. For response extinction, the animal was released from the same starting position and had the opportunity to perform the originally reinforced approach response to the goal end of the maze, which no longer contained food...
April 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28298344/the-assembly-of-ant-farmed-gardens-mutualism-specialization-following-host-broadening
#10
Guillaume Chomicki, Milan Janda, Susanne S Renner
Ant-gardens (AGs) are ant/plant mutualisms in which ants farm epiphytes in return for nest space and food rewards. They occur in the Neotropics and Australasia, but not in Africa, and their evolutionary assembly remains unclear. We here use phylogenetic frameworks for important AG lineages in Australasia, namely the ant genus Philidris and domatium-bearing ferns (Lecanopteris) and flowering plants in the Apocynaceae (Hoya and Dischidia) and Rubiaceae (Myrmecodia, Hydnophytum, Anthorrhiza, Myrmephytum and Squamellaria)...
March 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28294131/structural-and-functional-plasticity-within-the-nucleus-accumbens-and-prefrontal-cortex-associated-with-time-dependent-increases-in-food-cue-seeking-behavior
#11
Paige M Dingess, Rebecca A Darling, Rifka C Derman, Shaun S Wulff, Melissa L Hunter, Carrie R Ferrario, Travis E Brown
Urges to consume food can be driven by stimuli in the environment that are associated with previous food experience. Identifying adaptations within brain reward circuits that facilitate cue-induced food seeking is critical for understanding and preventing the overconsumption of food and subsequent weight gain. Utilizing electrophysiological, biochemical, and DiI labeling we examined functional and structural changes in the nucleus accumbens (NAc) and prefrontal cortex (PFC) associated with time-dependent increases in food craving ('incubation of craving')...
March 15, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28289568/human-head-orientation-and-eye-visibility-as-indicators-of-attention-for-goats-capra-hircus
#12
Christian Nawroth, Alan G McElligott
Animals domesticated for working closely with humans (e.g. dogs) have been shown to be remarkable in adjusting their behaviour to human attentional stance. However, there is little evidence for this form of information perception in species domesticated for production rather than companionship. We tested domestic ungulates (goats) for their ability to differentiate attentional states of humans. In the first experiment, we investigated the effect of body and head orientation of one human experimenter on approach behaviour by goats...
2017: PeerJ
https://www.readbyqxmd.com/read/28286164/changing-children-s-eating-behaviour-a-review-of-experimental-research
#13
REVIEW
Patricia DeCosta, Per Møller, Michael Bom Frøst, Annemarie Olsen
The interest in children's eating behaviours and how to change them has been growing in recent years. This review examines the following questions: What strategies have been used to change children's eating behaviours? Have their effects been experimentally demonstrated? And, are the effects transient or enduring? Medline and Cab abstract (Ovid) and Web of Science (Thomson Reuters) were used to identify the experimental studies. A total of 120 experimental studies were identified and they are presented grouped within these 11 topics; parental control, reward, social facilitation, cooking programs, school gardens, sensory education, availability and accessibility, choice architecture and nudging, branding and food packaging, preparation and serving style, and offering a choice...
March 9, 2017: Appetite
https://www.readbyqxmd.com/read/28284947/behavioral-characterization-of-blocking-the-erbb-signaling-during-adolescent-and-adulthood-in-reward-liking-preference-and-reward-related-learning
#14
Hagar Tadmor, Idit Golani, Eshkar Dvir, Ilana Kremer, Alon Shamir
Adolescence is a critical period in brain development. During this critical period the seeking for hedonic activities is increased, and their activity signals are stronger than the regulatory signals of judgment and reasoning. We recently reported that alteration of ErbB signaling during this period led to elevated striatal dopamine levels and reduced preference for sweetness without affecting locomotor activity and exploratory behavior. In the current study, we extend our findings and explore whether inhibition of the ErbB pathway during adolescence or adulthood also affects alcohol preference (hedonic "liking"), avoidance learning, and motivational reward "wanting"...
March 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28283319/oxytocin-the-sweet-hormone
#15
REVIEW
Gareth Leng, Nancy Sabatier
Mammalian neurons that produce oxytocin and vasopressin apparently evolved from an ancient cell type with both sensory and neurosecretory properties that probably linked reproductive functions to energy status and feeding behavior. Oxytocin in modern mammals is an autocrine/paracrine regulator of cell function, a systemic hormone, a neuromodulator released from axon terminals within the brain, and a 'neurohormone' that acts at receptors distant from its site of release. In the periphery oxytocin is involved in electrolyte homeostasis, gastric motility, glucose homeostasis, adipogenesis, and osteogenesis, and within the brain it is involved in food reward, food choice, and satiety...
March 7, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28281694/identification-of-the-beer-component-hordenine-as-food-derived-dopamine-d2-receptor-agonist-by-virtual-screening-a-3d-compound-database
#16
Thomas Sommer, Harald Hübner, Ahmed El Kerdawy, Peter Gmeiner, Monika Pischetsrieder, Timothy Clark
The dopamine D2 receptor (D2R) is involved in food reward and compulsive food intake. The present study developed a virtual screening (VS) method to identify food components, which may modulate D2R signalling. In contrast to their common applications in drug discovery, VS methods are rarely applied for the discovery of bioactive food compounds. Here, databases were created that exclusively contain substances occurring in food and natural sources (about 13,000 different compounds in total) as the basis for combined pharmacophore searching, hit-list clustering and molecular docking into D2R homology models...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28277185/changes-in-the-incentive-value-of-food-after-naltrexone-treatment-depend-on-a-differential-preference-for-a-palatable-food-in-male-rats
#17
Mariana Alvarado-Bañuelos, Eliana Barrios De Tomasi, Jorge Juárez
INTRODUCTION: Opioid antagonist treatments such as naltrexone (NTX) and naloxone reduce consummatory behavior of palatable food (PF) and other incentives. Meanwhile, a significant increase in alcohol consumption has been observed when it is offered immediately after ending NTX treatment, an effect apparently produced by increased opioidergic activity caused by up-regulation of opioid receptors. OBJECTIVE: On this basis we assessed changes in the consumption of PF after opioid antagonist treatment in rats with different preferences for that food...
March 23, 2016: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28274654/dopaminergic-modulation-of-reward-guided-decision-making-in-alcohol-preferring-aa-rats
#18
Ville Oinio, Pia Bäckström, Johanna Uhari-Väänänen, Atso Raasmaja, Petteri Piepponen, Kalervo Kiianmaa
R**esults from animal gambling models have highlighted the importance of dopaminergic neurotransmission in modulating decision making when large sucrose rewards are combined with uncertainty. The majority of these models use food restriction as a tool to motivate animals to accomplish operant behavioral tasks, in which sucrose is used as a reward. As enhanced motivation to obtain sucrose due to hunger may impact its reward-seeking effect, we wanted to examine the decision-making behavior of rats in a situation where rats were fed ad libitum...
March 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28260189/behavioral-pieces-of-neuroethological-puzzles
#19
Kenneth C Catania
In this review, I give a first-person account of surprising insights that have come from the behavioral dimension of neuroethological studies in my laboratory. These studies include the early attempts to understand the function of the nose in star-nosed moles and to explore its representation in the neocortex. This led to the discovery of a somatosensory fovea that parallels the visual fovea of primates in several ways. Subsequent experiments to investigate the assumed superiority of star-nosed moles to their relatives when locating food led to the unexpected discovery of stereo olfaction in common moles...
March 4, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28259721/neuroendocrinology-and-brain-imaging-of-reward-in-eating-disorders-a-possible-key-to-the-treatment-of-anorexia-nervosa-and-bulimia-nervosa
#20
REVIEW
Alessio Maria Monteleone, Giovanni Castellini, Umberto Volpe, Valdo Ricca, Lorenzo Lelli, Palmiero Monteleone, Mario Maj
Anorexia nervosa and bulimia nervosa are severe eating disorders whose etiopathogenesis is still unknown. Clinical features suggest that eating disorders may develop as reward-dependent syndromes, since eating less food is perceived as rewarding in anorexia nervosa while consumption of large amounts of food during binge episodes in bulimia nervosa aims at reducing the patient's negative emotional states. Therefore, brain reward mechanisms have been a major focus of research in the attempt to contribute to the comprehension of the pathophysiology of these disorders...
March 1, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
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