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https://www.readbyqxmd.com/read/27911261/targeted-deletion-of-akap7-in-dentate-granule-cells-impairs-spatial-discrimination
#1
Brian W Jones, Jennifer Deem, Thomas J Younts, Michael Weisenhaus, Christina A Sanford, Margaret C Slack, Jenesa Chin, Daniela Nachmanson, Alex McKennon, Pablo E Castillo, G Stanley McKnight
Protein Kinase A (PKA) mediates synaptic plasticity and is widely implicated in learning and memory. The hippocampal dentate gyrus (DG) is thought to be responsible for processing and encoding distinct contextual associations in response to highly similar inputs. The mossy fiber (MF) axons of the dentate granule cells convey strong excitatory drive to CA3 pyramidal neurons and express presynaptic, PKA-dependent forms of plasticity. Here, we demonstrate an essential role for the PKA anchoring protein, AKAP7, in mouse MF axons and terminals...
December 2, 2016: ELife
https://www.readbyqxmd.com/read/27911092/sexual-well-being-in-older-women-the-relevance-of-sexual-excitation-and-sexual-inhibition
#2
Suzanne Bell, Elke D Reissing
The aim of this study was to use the dual control model of sexual response (DCM) to investigate variation in sexual well-being among women 50 years of age and older. Data from 185 women 50 years of age and older (M = 59.46, SD = 6.96) were used to examine the relationships between sexual excitation (SE) and sexual inhibition (SI) and their lower-order factors to indicators of sexual well-being (i.e., sexual functioning, satisfaction, distress, frequency of sexual activity, and breadth of sexual behavior)...
December 2, 2016: Journal of Sex Research
https://www.readbyqxmd.com/read/27911086/affective-and-autonomic-responses-to-erotic-images-evidence-of-disgust-based-mechanisms-in-female-sexual-interest-arousal-disorder
#3
Natasha S DePesa, Jeffrey E Cassisi
Disgust has recently been implicated in the development and maintenance of female sexual dysfunction, yet most empirical studies have been conducted with a sexually healthy sample. The current study contributes to the literature by expanding the application of a disgust model of sexual functioning to a clinically relevant sample of women with low sexual desire/arousal and accompanying sexual distress. Young women (mean age = 19.12 years) with psychometrically defined sexual dysfunction (i.e., female sexual interest/arousal disorder [FSIAD] group) and a healthy control group were compared in their affective (i...
December 2, 2016: Journal of Sex Research
https://www.readbyqxmd.com/read/27910972/a-liver-microphysiological-system-of-tumor-cell-dormancy-and-inflammatory-responsiveness-is-affected-by-scaffold-properties
#4
A M Clark, S E Wheeler, C L Young, L Stockdale, J Shepard Neiman, W Zhao, D B Stolz, R Venkataramanan, D Lauffenburger, L Griffith, A Wells
Distant metastasis is the major cause of breast cancer-related mortality, commonly emerging clinically after 5 or more years of seeming 'cure' of the primary tumor, indicating a quiescent dormancy. The lack of relevant accessible model systems for metastasis that recreate this latent stage has hindered our understanding of the molecular basis and the development of therapies against these lethal outgrowths. We previously reported on the development of an all-human 3D ex vivo hepatic microphysiological system that reproduces several features of liver physiology and enables spontaneous dormancy in a subpopulation of breast cancer cells...
December 2, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27910885/bonobo-personality-traits-are-heritable-and-associated-with-vasopressin-receptor-gene-1a-variation
#5
Nicky Staes, Alexander Weiss, Philippe Helsen, Marisa Korody, Marcel Eens, Jeroen M G Stevens
Despite being closely related, bonobos and chimpanzees show remarkable behavioral differences, the proximate origins of which remain unknown. This study examined the link between behavioral variation and variation in the vasopressin 1a receptor gene (Avpr1a) in bonobos. Chimpanzees are polymorphic for a ~360 bp deletion (DupB), which includes a microsatellite (RS3) in the 5' promoter region of Avpr1a. In chimpanzees, the DupB deletion has been linked to lower sociability, lower social sensitivity, and higher anxiety...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910868/relationship-between-nanotopographical-alignment-and-stem-cell-fate-with-live-imaging-and-shape-analysis
#6
Peter Newman, Jorge Luis Galenano-Niño, Pamela Graney, Joselito M Razal, Andrew I Minett, João Ribas, Raquel Ovalle-Robles, Maté Biro, Hala Zreiqat
The topography of a biomaterial regulates cellular interactions and determine stem cell fate. A complete understanding of how topographical properties affect cell behavior will allow the rational design of material surfaces that elicit specified biological functions once placed in the body. To this end, we fabricate substrates with aligned or randomly organized fibrous nanostructured topographies. Culturing adipose-derived stem cells (ASCs), we explore the dynamic relationship between the alignment of topography, cell shape and cell differentiation to osteogenic and myogenic lineages...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910862/methylphenidate-enhances-early-stage-sensory-processing-and-rodent-performance-of-a-visual-signal-detection-task
#7
Rachel L Navarra, Brian D Clark, Andrew T Gargiulo, Barry D Waterhouse
Methylphenidate (MPH) is used clinically to treat attention-deficit/hyperactivity disorder (ADHD) and off-label as a performance enhancing agent in healthy individuals. MPH enhances catecholamine transmission via blockade of norepinephrine (NE) and dopamine (DA) reuptake transporters. However, it is not clear how this action impacts neural circuits performing cognitive and sensorimotor functions driving performance enhancement. The dorsal lateral geniculate nucleus (dLGN) is the primary thalamic relay for visual information from the retina to the cortex and is densely innervated by NE-containing fibers from the locus coeruleus (LC), a pathway known to modulate state-dependent sensory processing...
December 2, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27910820/4d-bioprinting-the-next-generation-technology-for-biofabrication-enabled-by-stimuli-responsive-materials
#8
Yi-Chen Li, Yu Shrike Zhang, Ali Akpek, Su Ryon Shin, Ali Khademhosseini
Four-dimensional (4D) bioprinting, encompassing a wide range of disciplines including bioengineering, materials science, chemistry, and computer sciences, is emerging as the next-generation biofabrication technology. By utilizing stimuli-responsive materials and advanced three-dimensional (3D) bioprinting strategies, 4D bioprinting aims to create dynamic 3D patterned biological structures that can transform their shapes or behavior under various stimuli. In this review, we highlight the potential use of various stimuli-responsive materials for 4D printing and their extension into biofabrication...
December 2, 2016: Biofabrication
https://www.readbyqxmd.com/read/27910235/the-impact-of-caregiver-mediated-jasper-on-child-restricted-and-repetitive-behaviors-and-caregiver-responses
#9
Clare Harrop, Amanda Gulsrud, Wendy Shih, Lilit Hovsepyan, Connie Kasari
Restricted and repetitive behaviors (RRBs) are a core feature of autism spectrum disorder (ASD). Compared to the social-communication impairments children show, we know less about why children engage in these repetitive actions and behaviors and how to help children (and their caregivers) with these behaviors. As a result, early intervention has typically focused on social-communication. In this study, we were interested in understanding how child RRBs changed following an intervention that targeted social-communication behaviors and if the training caregivers received changed how they responded to their child's RRBs...
December 2, 2016: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/27910234/luminal-contents-from-the-gut-of-colicky-infants-induce-visceral-hypersensitivity-in-mice
#10
H Eutamène, C L Garcia-Rodenas, S Yvon, E d'Aldebert, F Foata, B Berger, J Sauser, V Theodorou, G Bergonzelli, E Mas
BACKGROUND: The pathophysiology of infantile colic is poorly understood, though various studies report gut microbiota dysbiosis in colicky infants. We aimed to test the hypothesis that colic-related dysbiosis is associated with visceral hypersensitivity triggered by an altered luminal milieu. METHODS: Fecal samples from seven colicky and seven non-colicky infants were studied. Fecal supernatants (FS) were infused into the colons of C57/Bl6 mice (n=10/specimen). Visceral sensitivity was subsequently assessed in the animals by recording their abdominal muscle response to colorectal distension (CRD) by electromyography (EMG)...
December 1, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27910232/strategies-of-readers-with-autism-when-responding-to-inferential-questions-an-eye-movement-study
#11
Martina Micai, Holly Joseph, Mila Vulchanova, David Saldaña
Previous research suggests that individuals with autism spectrum disorder (ASD) have difficulties with inference generation in reading tasks. However, most previous studies have examined how well children understand a text after reading or have measured on-line reading behavior without response to questions. The aim of this study was to investigate the online strategies of children and adolescents with autism during reading and at the same time responding to a question by monitoring their eye movements. The reading behavior of participants with ASD was compared with that of age-, language-, nonverbal intelligence-, reading-, and receptive language skills-matched participants without ASD (control group)...
December 2, 2016: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/27909992/roles-for-orexin-hypocretin-in-the-control-of-energy-balance-and-metabolism
#12
Paulette B Goforth, Martin G Myers
The neuropeptide hypocretin is also commonly referred to as orexin, since its orexigenic action was recognized early. Orexin/hypocretin (OX) neurons project widely throughout the brain and the physiologic and behavioral functions of OX are much more complex than initially conceived based upon the stimulation of feeding. OX most notably controls functions relevant to attention, alertness, and motivation. OX also plays multiple crucial roles in the control of food intake, metabolism, and overall energy balance in mammals...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27909991/the-role-of-orexins-hypocretins-in-alcohol-use-and-abuse
#13
Leigh C Walker, Andrew J Lawrence
Addiction is a chronic relapsing disorder characterized by compulsive drug seeking and drug taking despite negative consequences. Alcohol abuse and addiction have major social and economic consequences and cause significant morbidity and mortality worldwide. Currently available therapeutics are inadequate, outlining the need for alternative treatments. Detailed knowledge of the neurocircuitry and brain chemistry responsible for aberrant behavior patterns should enable the development of novel pharmacotherapies to treat addiction...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27909989/orexin-and-central-modulation-of-cardiovascular-and-respiratory-function
#14
Pascal Carrive, Tomoyuki Kuwaki
Orexin makes an important contribution to the regulation of cardiorespiratory function. When injected centrally under anesthesia, orexin increases blood pressure, heart rate, sympathetic nerve activity, and the amplitude and frequency of respiration. This is consistent with the location of orexin neurons in the hypothalamus and the distribution of orexin terminals at all levels of the central autonomic and respiratory network. These cardiorespiratory responses are components of arousal and are necessary to allow the expression of motivated behaviors...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27909881/recruiting-pregnant-smokers-from-text4baby-for-a-randomized-controlled-trial-of-quit4baby
#15
Leah Leavitt, Lorien Abroms, Pamela Johnson, Jennifer Schindler-Ruwisch, Jessica Bushar, Indira Singh, Sean D Cleary, Whitney McInvale, Monique Turner
Recruiting pregnant smokers into clinical trials is challenging since this population tends to be disadvantaged, the behavior is stigmatized, and the intervention window is limited. The purpose of this study is to test the feasibility and effectiveness of recruiting pregnant smokers into a smoking cessation trial by sending recruitment text messages to an existing subscriber list. Recruitment messages were sent to subscribers flagged as pregnant in Text4baby, a national text messaging program for pregnant women and mothers...
December 1, 2016: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/27909557/eating-habits-physical-activity-nutrition-knowledge-and-self-efficacy-by-obesity-status-in-upper-grade-elementary-school-students
#16
Seong Ah Ha, Seo Yeon Lee, Kyung A Kim, Jung Sook Seo, Cheong Min Sohn, Hae Ryun Park, Kyung Won Kim
BACKGROUND/OBJECTIVES: Childhood obesity has increased in recent decades in Korea. This study was designed to examine differences in the eating habits, physical activity (PA), nutrition knowledge, and self-efficacy of children by obesity status. SUBJECTS/METHODS: Subjects were 5th-grade children from 70 elementary schools in 17 cities nationwide. Two-stage stratified cluster sampling was employed. Survey questionnaire included items related to general characteristics, eating habits, PA, nutrition knowledge and self-efficacy...
December 2016: Nutrition Research and Practice
https://www.readbyqxmd.com/read/27909415/imagining-change-an-integrative-approach-toward-explaining-the-motivational-role-of-mental-imagery-in-pro-environmental-behavior
#17
Christine Boomsma, Sabine Pahl, Jackie Andrade
Climate change and other long-term environmental issues are often perceived as abstract and difficult to imagine. The images a person associates with environmental change, i.e., a person's environmental mental images, can be influenced by the visual information they come across in the public domain. This paper reviews the literature on this topic across social, environmental, and cognitive psychology, and the wider social sciences; thereby responding to a call for more critical investigations into people's responses to visual information...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27909404/prefrontal-cortex-activity-is-associated-with-biobehavioral-components-of-the-stress-response
#18
Muriah D Wheelock, Nathaniel G Harnett, Kimberly H Wood, Tyler R Orem, Douglas A Granger, Sylvie Mrug, David C Knight
Contemporary theory suggests that prefrontal cortex (PFC) function is associated with individual variability in the psychobiology of the stress response. Advancing our understanding of this complex biobehavioral pathway has potential to provide insight into processes that determine individual differences in stress susceptibility. The present study used functional magnetic resonance imaging to examine brain activity during a variation of the Montreal Imaging Stress Task (MIST) in 53 young adults. Salivary cortisol was assessed as an index of the stress response, trait anxiety was assessed as an index of an individual's disposition toward negative affectivity, and self-reported stress was assessed as an index of an individual's subjective psychological experience...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27909104/loss-of-plasticity-in-the-d2-accumbens-pallidal-pathway-promotes-cocaine-seeking
#19
J A Heinsbroek, D N Neuhofer, W C Griffin, G S Siegel, A-C Bobadilla, Y M Kupchik, P W Kalivas
Distinct populations of D1- and D2-dopamine receptor expressing medium spiny neurons (D1-/D2-MSNs) comprise the nucleus accumbens, and activity in D1-MSNs promotes, while activity in D2-MSNs inhibits motivated behaviors. We used chemogenetics to extend D1-/D2-MSN cell specific regulation to cue-reinstated cocaine seeking in a mouse model of self-administration and relapse, and found that either increasing activity in D1-MSNs or decreasing activity in D2-MSNs augmented cue-induced reinstatement. Both D1- and D2-MSNs provide substantial GABAergic innervation to the ventral pallidum, and chemogenetic inhibition of ventral pallidal neurons blocked the augmented reinstatement elicited by chemogenetic regulation of either D1- or D2-MSNs...
December 1, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27909102/the-attraction-effect-modulates-reward-prediction-errors-and-intertemporal-choices
#20
Sebastian Gluth, Jared M Hotaling, Jörg Rieskamp
: Classical economic theory contends that the utility of a choice option should be independent of other options. This view is challenged by the attraction effect, in which the relative preference between two options is altered by the addition of a third, asymmetrically dominated option. Here, we leveraged the attraction effect in the context of intertemporal choices to test whether both decisions and reward prediction errors (RPE)-in the absence of choice-violate the independence of irrelevant alternatives principle...
December 1, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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