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https://www.readbyqxmd.com/read/28526411/jnj10181457-a-histamine-h3-receptor-inverse-agonist-regulates-in-vivo-microglial-functions-and-improves-depression-like-behaviours-in-mice
#1
Tomomitsu Iida, Takeo Yoshikawa, Anikó Kárpáti, Takuro Matsuzawa, Haruna Kitano, Asuka Mogi, Ryuichi Harada, Fumito Naganuma, Tadaho Nakamura, Kazuhiko Yanai
Brain histamine acts as a neurotransmitter and regulates various physiological functions, such as learning and memory, sleep-wake cycles, and appetite regulation. We have recently shown that histamine H3 receptor (H3R) is expressed in primary mouse microglia and has a strong influence on critical functions in microglia, including chemotaxis, phagocytosis, and cytokine secretion in vitro. However, the importance of H3R in microglial activity in vivo remains unknown. Here, we examined the effects of JNJ10181457 (JNJ), a selective and potent H3R inverse agonist, on microglial functions ex vivo and in vivo...
May 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28526255/associations-of-objective-and-subjective-sleep-disturbance-with-cognitive-function-in-older-men-with-comorbid-depression-and-insomnia
#2
Daniel J Biddle, Sharon L Naismith, Kathleen M Griffiths, Helen Christensen, Ian B Hickie, Nicholas S Glozier
OBJECTIVES: To examine whether poor objective and subjective sleep quality are differentially associated with cognitive function. DESIGN: Cross-sectional. SETTING: Participants were recruited from primary and secondary care, and directly from the community, in Sydney, Australia. PARTICIPANTS: The sample consisted of 74 men 50years and older (mean [SD], 58.4 [6.2] years), with comorbid depression and above-threshold insomnia symptoms, participating in a trial of online cognitive behavioral therapy for insomnia...
June 2017: Sleep Health
https://www.readbyqxmd.com/read/28525629/the-association-of-perceived-memory-loss-with-osteoarthritis-and-related-joint-pain-in-a-large-appalachian-population
#3
Kim E Innes, Usha Sambamoorthi
Objective. : Previous studies have documented memory impairment in several chronic pain syndromes. However, the potential link between memory loss and osteoarthritis (OA), the second most common cause of chronic pain, remains little explored. In this cross-sectional study, we examine the association of perceived memory loss to OA and assess the potential mediating influence of sleep and mood disturbance in a large Appalachian population. Design.:  Cross-sectional...
May 19, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28521121/untangling-a-cholinergic-pathway-from-wakefulness-to-memory
#4
Steffen Gais, Monika Schönauer
Acetylcholine is a major modulator of learning and memory, and its availability varies across the sleep-wake cycle. In this issue of Neuron, Papouin et al. (2017) describe a D-serine-dependent pathway involving astroglia by which the transmitter tunes the hippocampus toward memory encoding during wakefulness.
May 17, 2017: Neuron
https://www.readbyqxmd.com/read/28515433/the-sleep-deprived-human-brain
#5
REVIEW
Adam J Krause, Eti Ben Simon, Bryce A Mander, Stephanie M Greer, Jared M Saletin, Andrea N Goldstein-Piekarski, Matthew P Walker
How does a lack of sleep affect our brains? In contrast to the benefits of sleep, frameworks exploring the impact of sleep loss are relatively lacking. Importantly, the effects of sleep deprivation (SD) do not simply reflect the absence of sleep and the benefits attributed to it; rather, they reflect the consequences of several additional factors, including extended wakefulness. With a focus on neuroimaging studies, we review the consequences of SD on attention and working memory, positive and negative emotion, and hippocampal learning...
May 18, 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/28513589/decoding-material-specific-memory-reprocessing-during-sleep-in-humans
#6
M Schönauer, S Alizadeh, H Jamalabadi, A Abraham, A Pawlizki, S Gais
Neuronal learning activity is reactivated during sleep but the dynamics of this reactivation in humans are still poorly understood. Here we use multivariate pattern classification to decode electrical brain activity during sleep and determine what type of images participants had viewed in a preceding learning session. We find significant patterns of learning-related processing during rapid eye movement (REM) and non-REM (NREM) sleep, which are generalizable across subjects. This processing occurs in a cyclic fashion during time windows congruous to critical periods of synaptic plasticity...
May 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28512852/sleep-in-mental-disorders-ageing-and-memory-insomnia-external-factors-on-sleep-and-basic-research
#7
EDITORIAL
Dieter Riemann
No abstract text is available yet for this article.
June 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28511588/an-evening-milk-drink-can-affect-word-recall-in-indonesian-children-with-decreased-sleep-efficiency-a-randomized-controlled-trial
#8
Rini Sekartini, Dian Novita Chandra, Tiana Arsianti, Saptawati Bardosono, Tjhin Wiguna, Anne Schaafsma
STUDY OBJECTIVES: Sleep is important for memory consolidation in children. This study intended to find out whether an evening milk-based drink could influence sleep efficiency and memory recall in a group of Indonesian children (5-6 years old) with sleep deprivation. METHODS: Children were randomly allocated to one of three interventions: Reference product, satiety-stimulating product, and a relaxing product. The intervention lasted for 6 weeks and children consumed two servings per day of each 200 ml, the serving in the morning being the same for all children...
May 16, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28507260/reprogramming-cells-from-gulf-war-veterans-into-neurons-to-study-gulf-war-illness
#9
Liang Qiang, Anand N Rao, Gustavo Mostoslavsky, Marianne F James, Nicole Comfort, Kimberly Sullivan, Peter W Baas
Gulf War illness (GWI), which afflicts at least 25% of veterans who served in the 1990-1991 war in the Persian Gulf, is thought to be caused by deployment exposures to various neurotoxicants, including pesticides, anti-nerve gas pills, and low-level nerve agents including sarin/cyclosarin. GWI is a multisymptom disorder characterized by fatigue, joint pain, cognitive problems, and gastrointestinal complaints. The most prominent symptoms of GWI (memory problems, poor attention/concentration, chronic headaches, mood alterations, and impaired sleep) suggest that the disease primarily affects the CNS...
May 16, 2017: Neurology
https://www.readbyqxmd.com/read/28507034/sleep-supports-inhibitory-operant-conditioning-memory-in-aplysia
#10
Albrecht P A Vorster, Jan Born
Sleep supports memory consolidation as shown in mammals and invertebrates such as bees and Drosophila. Here, we show that sleep's memory function is preserved in Aplysia californica with an even simpler nervous system. Animals performed on an inhibitory conditioning task ("learning that a food is inedible") three times, at Training, Retrieval 1, and Retrieval 2, with 17-h intervals between tests. Compared with Wake animals, remaining awake between Training and Retrieval 1, Sleep animals with undisturbed post-training sleep, performed significantly better at Retrieval 1 and 2...
June 2017: Learning & Memory
https://www.readbyqxmd.com/read/28506629/hippocampal-information-processing-across-sleep-wake-cycles
#11
REVIEW
Kenji Mizuseki, Hiroyuki Miyawaki
According to a two-stage memory consolidation model, during waking theta states, afferent activity from the neocortex to the hippocampus induces transient synaptic modification in the hippocampus, where the information is deposited as a labile form of memory trace. During subsequent sharp-wave ripples (SPW-Rs), the newly acquired hippocampal information is transferred to the neocortex and stored as a long-lasting memory trace. Consistent with this hypothesis, waking theta states and SPW-Rs distinctly control information flow in the hippocampal-entorhinal loop...
May 12, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28506620/bombesin-administration-impairs-memory-and-does-not-reverse-memory-deficit-caused-by-sleep-deprivation
#12
L B T Ferreira, S L B Oliveira, J Raya, L A Esumi, D C Hipolide
Sleep deprivation impairs performance in emotional memory tasks, however this effect on memory is not completely understood. Possible mechanisms may involve an alteration in neurotransmission systems, as shown by the fact that many drugs that modulate neural pathways can prevent memory impairment by sleep loss. Gastrin releasing peptide (GRP) is a neuropeptide that emerged as a regulatory molecule of emotional memory through the modulation of other neurotransmission systems. Thus, the present study addressed the effect of intraperitoneal (IP) administration of bombesin (BB) (2...
May 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28501498/the-role-of-sleep-in-the-plasticity-of-the-olfactory-system
#13
REVIEW
Masahiro Yamaguchi
The central olfactory system mediates a variety of odor-guided behaviors crucial for maintenance of animal life. The olfactory neural circuit must be highly plastic to ensure that it responds appropriately to changing odor circumstances. Recent studies have revealed that the processing of odor information changes drastically during waking and sleep and that neural activity during sleep plays pivotal roles in the structural reorganization and functional plasticity of the olfactory system. While olfactory information from the external world is efficiently transferred to the olfactory cortex (OC) via the olfactory bulb (OB) during waking, this information flow is attenuated during slow-wave sleep: during slow-wave sleep, the OC neurons exhibit synchronous discharges without odor input under the entrainment of sharp waves in the local field potential recording...
May 10, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28498009/-i-feel-better-when%C3%A2-an-analysis-of-the-memory-experience-gap-for-peoples-estimates-of-the-relationship-between-health-behaviours-and-experiences
#14
Andrew T Gloster, Andrea H Meyer, Cornelia Witthauer, Roselind Lieb, Jutta Mata
OBJECTIVE: People often overestimate how strongly behaviours and experiences are related. This memory-experience gap might have important implications for health care settings, which often require people to estimate associations, such as "my mood is better when I exercise". This study examines how subjective correlation estimates between health behaviours and experiences relate to calculated correlations from online reports and whether subjective estimates are associated with engagement in actual health behaviour...
May 12, 2017: Psychology & Health
https://www.readbyqxmd.com/read/28495217/individuals-with-mild-ms-with-poor-sleep-quality-have-impaired-visuospatial-memory-and-lower-perceived-functional-abilities
#15
Catherine F Siengsukon, Mayis Aldughmi, Melike Kahya, Sharon Lynch, Jared Bruce, Morgan Glusman, Abigail Ness Norouzinia, Sandra Billinger
BACKGROUND: Sleep disturbances are common in individuals with Multiple Sclerosis (MS), but the impact of poor sleep quality on cognitive and physical function in individuals with MS is less clear. OBJECTIVE/HYPOTHESIS: The purpose of this study was to examine the relationship between sleep quality and cognitive and physical function in individuals with mild MS. METHODS: Forty individuals with relapsing-remitting or secondary-progressive MS (50...
April 29, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28493346/no-effect-of-targeted-memory-reactivation-during-slow-wave-sleep-on-emotional-recognition-memory
#16
Jennifer E Ashton, Scott A Cairney, M Gareth Gaskell
Recent work has suggested that the benefits of sleep for memory consolidation are enhanced for highly salient (versus non-salient) memories. Using a technique known as targeted memory reactivation, it is possible to selectively strengthen newly learned memories by re-exposing the sleeping brain to auditory cues. The aim of the current study was to examine whether emotionally salient memories are also more responsive to targeted memory reactivation in slow-wave sleep than neutral memories. In an initial training phase, participants memorised emotionally negative and neutral pictures, which were each paired with a semantically related sound...
May 11, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28491027/post-learning-sleep-transiently-boosts-context-specific-operant-extinction-memory
#17
Margarita Borquez, María P Contreras, Ennio Vivaldi, Jan Born, Marion Inostroza
Operant extinction is learning to supress a previously rewarded behavior. It is known to be strongly associated with the specific context in which it was acquired, which limits the therapeutic use of operant extinction in behavioral treatments, e.g., of addiction. We examined whether sleep influences contextual memory of operant extinction over time, using two different recall tests (Recent and Remote). Rats were trained in an operant conditioning task (lever press) in context A, then underwent extinction training in context B, followed by a 3-h retention period that contained either spontaneous morning sleep, morning sleep deprivation, or spontaneous evening wakefulness...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28488395/shorter-duration-of-non-rapid-eye-movement-sleep-slow-waves-in-epha4-knockout-mice
#18
Marlène Freyburger, Gaétan Poirier, Julie Carrier, Valérie Mongrain
Slow waves occurring during non-rapid eye movement sleep have been associated with neurobehavioural performance and memory. In addition, the duration of previous wakefulness and sleep impacts characteristics of these slow waves. However, molecular mechanisms regulating the dynamics of slow-wave characteristics remain poorly understood. The EphA4 receptor regulates glutamatergic transmission and synaptic plasticity, which have both been linked to sleep slow waves. To investigate if EphA4 regulates slow-wave characteristics during non-rapid eye movement sleep, we compared individual parameters of slow waves between EphA4 knockout mice and wild-type littermates under baseline conditions and after a 6-h sleep deprivation...
May 10, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28487671/improved-mental-acuity-forecasting-with-an-individualized-quantitative-sleep-model
#19
Brent D Winslow, Nam Nguyen, Kimberly E Venta
Sleep impairment significantly alters human brain structure and cognitive function, but available evidence suggests that adults in developed nations are sleeping less. A growing body of research has sought to use sleep to forecast cognitive performance by modeling the relationship between the two, but has generally focused on vigilance rather than other cognitive constructs affected by sleep, such as reaction time, executive function, and working memory. Previous modeling efforts have also utilized subjective, self-reported sleep durations and were restricted to laboratory environments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28485844/neuropeptides-and-neurotransmitters-that-modulate-thalamo-cortical-pathways-relevant-to-migraine-headache
#20
REVIEW
Rodrigo Noseda, David Borsook, Rami Burstein
Dynamic thalamic regulation of sensory signals allows the cortex to adjust better to rapidly changing behavioral, physiological, and environmental demands. To fulfill this role, thalamic neurons must themselves be subjected to constantly changing modulatory inputs that originate in multiple neurochemical pathways involved in autonomic, affective, and cognitive functions. This review defines a chemical framework for thinking about the complexity of factors that modulate the response properties of relay trigeminovascular thalamic neurons...
May 2017: Headache
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