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https://www.readbyqxmd.com/read/28431971/influence-of-stress-associated-with-chronic-alcohol-exposure-on-drinking
#1
REVIEW
Howard C Becker
Stress is commonly regarded as an important trigger for relapse and a significant factor that promotes increased motivation to drink in some individuals. However, the relationship between stress and alcohol is complex, likely changing in form during the transition from early moderated alcohol use to more heavy uncontrolled alcohol intake. A growing body of evidence indicates that prolonged excessive alcohol consumption serves as a potent stressor, producing persistent dysregulation of brain reward and stress systems beyond normal homeostatic limits...
April 18, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28379303/restoring-neuronal-progranulin-reverses-deficits-in-a-mouse-model-of-frontotemporal-dementia
#2
Andrew E Arrant, Anthony J Filiano, Daniel E Unger, Allen H Young, Erik D Roberson
Loss-of-function mutations in progranulin (GRN), a secreted glycoprotein expressed by neurons and microglia, are a common autosomal dominant cause of frontotemporal dementia, a neurodegenerative disease commonly characterized by disrupted social and emotional behaviour. GRN mutations are thought to cause frontotemporal dementia through progranulin haploinsufficiency, therefore, boosting progranulin expression from the intact allele is a rational treatment strategy. However, this approach has not been tested in an animal model of frontotemporal dementia and it is unclear if boosting progranulin could correct pre-existing deficits...
March 29, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28342763/serotonin-and-neuroplasticity-links-between-molecular-functional-and-structural-pathophysiology-in-depression
#3
REVIEW
Christoph Kraus, Eero Castrén, Siegfried Kasper, Rupert Lanzenberger
Serotonin modulates neuroplasticity, especially during early life, and dysfunctions in both systems likewise contribute to pathophysiology of depression. Recent findings demonstrate that serotonin reuptake inhibitors trigger reactivation of juvenile-like neuroplasticity. How these findings translate to clinical antidepressant treatment in major depressive disorder remains unclear. With this review, we link preclinical with clinical work on serotonin and neuroplasticity to bring two pathophysiologic models in clinical depression closer together...
March 22, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28286285/minocycline-reduces-mechanical-allodynia-and-depressive-like-behaviour-in-type-1-diabetes-mellitus-in-the-rat
#4
Diana Amorim, Sónia Puga, Rui Bragança, António Braga, Antti Pertovaara, Armando Almeida, Filipa Pinto-Ribeiro
A common and devastating complication of diabetes mellitus is painful diabetic neuropathy (PDN) that can be accompanied by emotional disorders such as depression. A few studies have suggested that minocycline that inhibits microglia may attenuate pain hypersensitivity in PDN. Moreover, a recent study reported that minocycline has an acute antidepressive-like effect in diabetic animals. Here we studied whether (i) prolonged minocycline treatment suppresses pain behaviour in PDN, (ii) the minocycline effect varies with submodality of pain, and (iii) the suppression of pain behaviour by prolonged minocycline treatment is associated with antidepressive-like effect...
March 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28283563/a-rapid-subcortical-amygdala-route-for-faces-irrespective-of-spatial-frequency-and-emotion
#5
Jessica McFadyen, Martial Mermillod, Jason B Mattingley, Veronika Halász, Marta I Garrido
There is significant controversy over the existence and function of a direct subcortical visual pathway to the amygdala. It is thought that this pathway rapidly transmits low spatial frequency information to the amygdala independently of the cortex and yet the directionality of this function has never been determined. We used magnetoencephalography to measure neural activity while human participants discriminated the gender of neutral and fearful faces filtered for low or high spatial frequencies. We applied dynamic causal modelling to demonstrate that the most likely underlying neural network consisted of a pulvinar-amygdala connection that was uninfluenced by spatial frequency or emotion, and a cortical-amygdala connection that conveyed high spatial frequencies...
March 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28266338/vocally-disruptive-behaviors-management-in-older-people-with-dementia
#6
Caroline Berastegui, Emmanuel Monfort, Bertrand Boudin
Although shouting is a common psycho-behavioral symptom in geriatric institutions, the question of its assessment and treatment remains seldom studied and has rarely been the subject of specific recommendations. The combination of the focus group method and brainstorming has emerged as a methodology both relevant and feasible in geriatric facility to identify the coping strategies used by professionals and generalize guidelines for clinical observation and vocally disruptive behaviors management (shouting)...
March 1, 2017: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/28263765/exogenous-testosterone-decreases-men-s-personal-distance-in-a-social-threat-context
#7
Lisa Wagels, Sina Radke, Katharina Sophia Goerlich, Ute Habel, Mikhail Votinov
BACKGROUND: Testosterone can motivate human approach and avoidance behavior. Specifically, the conscious recognition of and implicit reaction to angry facial expressions is influenced by testosterone. The study tested whether exogenous testosterone modulates the personal distance (PD) humans prefer in a social threat context. METHODS: 82 healthy male participants underwent either transdermal testosterone (testosterone group) or placebo application (placebo group)...
March 11, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28219487/evidence-for-the-risks-and-consequences-of-adolescent-cannabis-exposure
#8
REVIEW
Amir Levine, Kelly Clemenza, Moira Rynn, Jeffrey Lieberman
OBJECTIVE: This review of the scientific literature examines the potential adult sequelae of exposure to cannabis and related synthetic cannabinoids in adolescence. We examine the four neuropsychiatric outcomes that are likely most vulnerable to alteration by early cannabinoid use, as identified within both the clinical and preclinical research: cognition, emotional functioning, risk for psychosis, and addiction. METHOD: A literature search was conducted through PubMed, PsychInfo, and Google Scholar with no publication date restrictions...
March 2017: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/28188857/sensitivity-to-carbon-dioxide-and-translational-studies-of-anxiety-disorders
#9
Marco Battaglia
Heightened concentrations of CO2 in inhaled air provoke temporary acidification of the brain, followed by compensatory hyperventilation and increased arousal/anxiety. These responses are likely to map a basic, latent general alarm/avoidance system that is largely shared across mammals, and are sources of individual differences. By showing paroxysmal respiratory and emotional responses to CO2 challenges, humans with panic and separation anxiety disorders lie at one extreme of the distribution for CO2 sensitivity...
February 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/28179107/pro-inflammatory-immune-to-brain-signaling-is-involved-in-neuroendocrine-responses-to-acute-emotional-stress
#10
Jordi Serrats, Jan-Sebastian Grigoleit, Elena Alvarez-Salas, Paul E Sawchenko
Activation of the hypothalamo-pituitary-adrenal (HPA) axis by inflammatory stressors (e.g., bacterial lipopolysaccharide) is thought to involve vascular transduction of circulating cytokines, with perivascular macrophages (PVMs) along with endothelia, effecting activation of HPA control circuitry via inducible (cyclooxygenase-2- or COX-2-dependent) prostaglandin synthesis. To test the stressor-specificity of this mechanism, we examined whether ablation of PVMs or pharmacologic blockade of COX activity affected HPA responses to a representative emotional stressor, restraint...
February 4, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28141811/weakening-self-control-biases-the-emotional-evaluation-of-appetitive-cues
#11
Christian Dirk Wiesner, Christoph Lindner
Exerting self-control in a first task weakens self-control in a second completely unrelated task (ego-depletion). It has been proposed that ego-depletion increases approach motivation which would amplify positive emotions to appetitive cues. Here we investigated the effect of the depletion of cognitive self-control on the subsequent emotional evaluation of appetitive cues. Participants of the depletion group copied a text omitting frequent letters and thereby exerting self-control to inhibit automated writing habits...
2017: PloS One
https://www.readbyqxmd.com/read/28104355/allopregnanolone-induces-state-dependent-fear-via-the-bed-nucleus-of-the-stria-terminalis
#12
Gillian M Acca, Abel S Mathew, Jingji Jin, Stephen Maren, Naomi Nagaya
Gonadal steroids and their metabolites have been shown to be important modulators of emotional behavior. Allopregnanolone (ALLO), for example, is a metabolite of progesterone that has been linked to anxiety-related disorders such as posttraumatic stress disorder. In rodents, it has been shown to reduce anxiety in a number of behavioral paradigms including Pavlovian fear conditioning. We have recently found that expression of conditioned contextual (but not auditory) freezing in rats can be suppressed by infusion of ALLO into the bed nucleus of the stria terminalis (BNST)...
March 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28069437/indispensable-role-of-the-voltage-gated-calcium-channels-in-the-procognitive-effects-of-angiotensin-iv
#13
Jan Józef Braszko
BACKGROUND: Voltage-gated calcium channels (VGCCs) play a major role in brain functioning, including that of cognition-related structures such as cerebral cortex and hippocampus. Cellular mechanisms underlying learning and memory enhancing effect of the neuropeptide angiotensin IV (Ang IV) have been linked to VGCCs but only in respect of its long-term potentiation (LTP)-inducing effect. OBJECTIVE: To assess behaviorally effects of L- and T-type VGCCs blocking drugs in low, behaviorally inactive, doses on Ang IV facilitation of recall of aversively (foot-shock) and appetitively (curiosity for novelty) motivated behaviors...
January 6, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28054809/differential-patterns-of-constant-frequency-50-and-22-khz-usv-production-are-related-to-intensity-of-negative-affective-state
#14
James O Taylor, Catherine M Urbano, Brenton G Cooper
Adult rat ultrasonic vocalizations (USVs) are a valuable tool for noninvasively assessing an animal's emotional state. USVs are produced in 1 of 2 frequency ranges labeled as 22 kHz or 50 kHz vocalizations. One USV subtype within the 50 kHz call category, constant frequency 50 kHz (CF 50 kHz) calls, is not viewed as signaling an emotional state. The current study tested the hypothesis that CF 50 kHz calls are related to a mild negative affective state. In Experiment 1, diazepam (1, 2.5, or 5 mg/kg), or control injections were administered prior to receiving a sequence of mild footshocks (0...
February 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/27990301/robotic-seals-as-therapeutic-tools-in-an-aged-care-facility-a-qualitative-study
#15
Melanie Birks, Marie Bodak, Joanna Barlas, June Harwood, Mary Pether
Robots, including robotic seals, have been used as an alternative to therapies such as animal assisted therapy in the promotion of health and social wellbeing of older people in aged care facilities. There is limited research available that evaluates the effectiveness of robot therapies in these settings. The aim of this study was to identify, explore, and describe the impact of the use of Paro robotic seals in an aged care facility in a regional Australian city. A qualitative, descriptive, exploratory design was employed...
2016: Journal of Aging Research
https://www.readbyqxmd.com/read/27989846/cortical-areas-involved-in-behavioral-expression-of-external-pallidum-dysfunctions-a-pet-imaging-study-in-non-human-primates
#16
Laurent Galineau, Aurélie Kas, Yulia Worbe, Marion Chaigneau, Anne-Sophie Herard, Martine Guillermier, Thierry Delzescaux, Jean Féger, Philippe Hantraye, Léon Tremblay
The external pallidum (GPe) is a component of the indirect pathway centrally placed in the basal ganglia. Studies already demonstrated that the pharmacological disinhibition of the sensorimotor, associative, and limbic GPe produced dyskinesia, hyperactivity, and compulsive behaviors, respectively. The aim of this study was to investigate the cortical regions altered by the disinhibition of each GPe functional territory. Thus, 5 macaques were injected with bicuculline in sensorimotor, associative, and limbic sites of the GPe producing dyskinesia, hyperactivity, and compulsive behaviors, and underwent in vivo positron tomography with (18)F-2-fluoro-2-deoxy-D-glucose to identify cortical dysfunctions related to GPe disinhibition...
February 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/27965550/social-support-modulates-stress-related-gene-expression-in-various-brain-regions-of-piglets
#17
Ellen Kanitz, Theresa Hameister, Armin Tuchscherer, Margret Tuchscherer, Birger Puppe
The presence of an affiliative conspecific may alleviate an individual's stress response in threatening conditions. However, the mechanisms and neural circuitry underlying the process of social buffering have not yet been elucidated. Using the domestic pig as an animal model, we examined the effect of a 4-h maternal and littermate deprivation on stress hormones and on mRNA expression of the glucocorticoid receptor (GR), mineralocorticoid receptor (MR), 11ß-hydroxysteroid dehydrogenase (11ß-HSD) types 1 and 2 and the immediate early gene c-fos in various brain regions of 7-, 21- and 35-day old piglets...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27918951/subjective-alcohol-responses-in-a-cross-sectional-field-based-study-of-adolescents-and-young-adults-effects-of-age-drinking-level-and-dependence-consequences
#18
Hayley Treloar, Mark A Celio, Stephen A Lisman, Robert Miranda, Linda P Spear
BACKGROUND: Adolescents are physically, cognitively, socially, and emotionally different than adults in ways that may partially explain why alcohol misuse typically develops during this period. Ample animal-science evidence and nascent ecological evidence points toward developmentally limited differences in sensitivity to alcohol's stimulatory and sedative effects. Field-based research methods were used to test for such age-related differences in a sample of adolescents through young adults...
January 1, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27909384/examining-emotional-support-animals-and-role-conflicts-in-professional-psychology
#19
Jeffrey N Younggren, Jennifer A Boisvert, Cassandra L Boness
This article examines the role conflicts that psychologists may face in their practices related to the evaluation and certification of emotional support animals (ESAs). It reviews the legal differences between ESAs and service animals (SAs), outlines ethical guidelines and legal policies/regulations regarding the use of ESAs, and examines the potential role conflicts that exist when a treating psychologist is certifying the need for an ESA. Finally, it makes recommendations to assist psychologists in staying within the standards of practice in order to avoid the ethical and legal risks associated with certifying an ESA...
August 2016: Professional Psychology, Research and Practice
https://www.readbyqxmd.com/read/27903595/lifelong-imbalanced-la-ala-intake-impairs-emotional-and-cognitive-behavior-via-changes-in-brain-endocannabinoid-system
#20
Erica Zamberletti, Fabiana Piscitelli, Valentina De Castro, Elisabetta Murru, Marina Gabaglio, Paola Colucci, Chiara Fanali, Pamela Prini, Tiziana Bisogno, Mauro Maccarrone, Patrizia Campolongo, Sebastiano Banni, Tiziana Rubino, Daniela Parolaro
Imbalanced dietary n-3 and n-6 PUFA content has been associated with a number of neurological conditions. Endocannabinoids are n-6 PUFA derivatives, whose brain concentrations are sensitive to modifications of fatty acid composition of the diet and play a central role in the regulation of mood and cognition. As such, the endocannabinoid system appears to be an ideal candidate for mediating the effects of dietary fatty acids on mood and cognition. Lifelong administration of isocaloric α-linolenic acid (ALA)-deficient and -enriched diets induced short-term memory deficits, whereas only dietary ALA enrichment altered emotional reactivity in adult male rats compared with animals fed a standard diet that was balanced in ALA/linoleic acid (LA) ratio...
February 2017: Journal of Lipid Research
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