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https://www.readbyqxmd.com/read/29156690/abnormal-amplitude-of-low-frequency-fluctuations-associated-with-rapid-eye-movement-in-chronic-primary-insomnia-patients
#1
Qian Ran, Jia Chen, Chuan Li, Li Wen, Faguo Yue, Tongsheng Shu, Jianxun Mi, Guangxian Wang, Lei Zhang, Dong Gao, Dong Zhang
Purpose: Chronic primary insomnia (CPI) is the most prevalent sleep disorder worldwide. CPI manifests as difficulties in sleep onset, maintaining sleep, prolonged sleep latency, and daytime impairment and is often accompanied by cognitive problems such as poor academic performance, poor attention, and decreased memory. The most popular explanation of insomnia is hyperarousal or increased activities of neurons. Rapid eye movement (REM) sleep detected by polysomnography (PSG) exhibits a positive relationship with brain homeostasis and can be helpful for optimally preparing an organism for emotional and social function...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156647/effects-of-nutritional-interventions-during-pregnancy-on-infant-and-child-cognitive-outcomes-a-systematic-review-and-meta-analysis
#2
REVIEW
Rachael M Taylor, Shanna M Fealy, Alessandra Bisquera, Roger Smith, Clare E Collins, Tiffany-Jane Evans, Alexis J Hure
BACKGROUND: Epidemiological studies have demonstrated that folate, iodine and iron intake during pregnancy impacts on foetal brain development and cognitive function. However, in human studies, the relationship with other dietary nutrients is less clear. OBJECTIVE: This systematic review aims to critically appraise the current literature and meta-analyses results from nutritional interventions during pregnancy that aimed to optimise infant and child cognitive outcomes...
November 20, 2017: Nutrients
https://www.readbyqxmd.com/read/29156412/a-system-level-mathematical-model-of-basal-ganglia-motor-circuit-for-kinematic-planning-of-arm-movements
#3
Armin Salimi-Badr, Mohammad Mehdi Ebadzadeh, Christian Darlot
In this paper, a novel system-level mathematical model of the Basal Ganglia (BG) for kinematic planning, is proposed. An arm composed of several segments presents a geometric redundancy. Thus, selecting one trajectory among an infinite number of possible ones requires overcoming redundancy, according to some kinds of optimization. Solving this optimization is assumed to be the function of BG in planning. In the proposed model, first, a mathematical solution of kinematic planning is proposed for movements of a redundant arm in a plane, based on minimizing energy consumption...
November 10, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29156156/effects-of-arachidonic-acid-eicosapentaenoic-acid-and-docosahexaenoic-acid-on-brain-development-using-artificial-rearing-of-delta-6-desaturase-knockout-mice
#4
Akiko Harauma, Erisa Hatanaka, Hidemi Yasuda, Manabu T Nakamura, Norman Salem, Toru Moriguchi
This study focused on the effect of polyunsaturated fatty acids (PUFAs) during the lactation period of delta-6-desaturase knockout (D6D-KO) mice using an artificial rearing method. Newborn pups of D6D-KO male mice were separated from their dams within 48h and were fed artificial milk. Six formulations of milk were used: Control (Cont) milk (3.9% α-linolenic acid and 18% linoleic acid), + 1.3% arachidonic acid (ARA), + 1.2% docosahexaenoic acid (DHA), + 1.3% eicosapentaenoic acid (EPA), + 1.1% ARA + 1.3% DHA, and + 1...
December 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29155970/cognitive-function-coping-and-depressive-symptoms-in-children-and-adolescents-with-sickle-cell-disease
#5
Kemar V Prussien, Michael R DeBaun, Janet Yarboi, Heather Bemis, Colleen McNally, Ellen Williams, Bruce E Compas
Objective: The objective of this study was to investigate the association between cognitive functioning, coping, and depressive symptoms in children and adolescents with sickle cell disease (SCD). Method: Forty-four children (M age = 9.30, SD = 3.08; 56.8% male) with SCD completed cognitive assessments measuring working memory (Wechsler Intelligence Scale for Children-Fourth Edition) and verbal comprehension (Wechsler Abbreviated Scale of Intelligence-Second Edition)...
November 16, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29155896/progesterone-impairs-antigen-non-specific-immune-protection-by-cd8-t-memory-cells-via-interferon-%C3%AE-gene-hypermethylation
#6
Yushi Yao, Hui Li, Jie Ding, Yixin Xia, Lei Wang
Pregnant women and animals have increased susceptibility to a variety of intracellular pathogens including Listeria monocytogenes (LM), which has been associated with significantly increased level of sex hormones such as progesterone. CD8 T memory(Tm) cell-mediated antigen-non-specific IFN-γ responses are critically required in the host defense against LM. However, whether and how increased progesterone during pregnancy modulates CD8 Tm cell-mediated antigen-non-specific IFN-γ production and immune protection against LM remain poorly understood...
November 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29155754/a-method-for-growing-bio-memristors-from-slime-mold
#7
Eduardo Reck Miranda, Edward Braund
Our research is aimed at gaining a better understanding of the electronic properties of organisms in order to engineer novel bioelectronic systems and computing architectures based on biology. This specific paper focuses on harnessing the unicellular slime mold Physarum polycephalum to develop bio-memristors (or biological memristors) and bio-computing devices. The memristor is a resistor that possesses memory. It is the 4th fundamental passive circuit element (the other three are the resistor, the capacitor, and the inductor), which is paving the way for the design of new kinds of computing systems; e...
November 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155559/crafting-of-neuroprotective-octapeptide-from-taxol-binding-pocket-of-%C3%AE-tubulin
#8
Prasenjit Mondal, Gaurav Das, Juhee Khan, Krishnangsu Pradhan, Surajit Ghosh
Microtubules play crucial role in maintaining the shape and function of neurons. During progression of Alzheimer's disease (AD), severe destabilization of microtubule occurs, which leads to the permanent disruption of signal transduction process and memory loss. Thus, microtubule stabilization is one of the key requirements for the treatment of AD. Taxol, a microtubule stabilizing anti-cancer drug has been considered as potential anti-AD drug but never tested in AD patients, likely because of its' toxic nature and poor brain exposure...
November 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29155349/endogenous-sulfur-dioxide-regulates-hippocampal-neuron-apoptosis-in-developing-epileptic-rats-and-is-associated-with-the-perk-signaling-pathway
#9
Manman Niu, Ying Han, Qinrui Li, Jing Zhang
Epilepsy is among the most common neurological diseases in children. Recurrent seizures can result in hippocampal damage and seriously impair learning and memory functions in children. However, the mechanisms underlying epilepsy-related brain injury are unclear. Neuronal apoptosis is among the most common neuropathological manifestations of brain injury. Endogenous sulfur dioxide (SO2) has been shown to be involved in seizures and related neuron apoptosis. However, the role of endogenous SO2 in epilepsy remains unclear...
November 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29155290/factors-associated-with-attrition-in-a-multicenter-longitudinal-observational-study-of-patients-with-advanced-cancer
#10
Pedro E Perez-Cruz, Omar Shamieh, Carlos Eduardo Paiva, Jung Hye Kwon, Mary Ann Muckaden, Eduardo Bruera, David Hui
CONTEXT: Attrition is common in longitudinal observational studies in palliative care. Few studies have examined predictors of attrition. OBJECTIVES: To identify patient characteristics at enrollment associated with attrition in palliative oncology outpatient setting. METHODS: In this longitudinal observational study, advanced cancer patients [ACP] enrolled in an outpatient multicenter study were assessed at baseline and 2-5 weeks later. We compared baseline characteristics between patients who returned for follow-up and those who dropped out...
November 15, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/29155265/neuroanatomical-distribution-and-function-of-the-vasopressin-v1b-receptor-in-the-rat-brain-deciphered-using-specific-fluorescent-ligands
#11
Maithé Corbani, Rafik Marir, Miguel Trueba, Magda Chafai, Anne Vincent, Amélie M Borie, Michel G Desarménien, Yoichi Ueta, Csaba Tomboly, Aleksandra Olma, Maurice Manning, Gilles Guillon
It is now accepted that vasopressin, through V1A/V1B receptors, centrally regulates cognitive functions such as memory, affiliation, stress, fear and depression. However, the respective roles of these receptor isoforms and their contribution to stress-related pathologies remain uncertain. The development of new therapeutic treatments requires a precise knowledge of the distribution of these receptors within the brain, which has been so far hampered by the lack of selective V1B markers. In the present study, we have determined the pharmacological properties of three new potent rat V1B fluorescent ligands and demonstrated that they constitute valuable tools for simultaneous visualization and activation of native V1B receptors in living rat brain tissue...
November 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29155095/behavioral-and-neural-mechanisms-by-which-prior-experience-impacts-subsequent-learning
#12
Ryan G Parsons
Memory is often thought about in terms of its ability to recollect and store information about the past, but its function likely rests with the fact that it permits adaptation to ongoing and future experience. Thus, the brain circuitry that encodes memory must act as if stored information is likely to be modified by subsequent experience. Considerable progress has been made in identifying the behavioral and neural mechanisms supporting the acquisition and consolidation of memories, but this knowledge comes largely from studies in laboratory animals in which the training experience is presented in isolation from prior experimentally-controlled events...
November 16, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29155092/effects-of-medial-prefrontal-cortex-5-ht7-receptor-knockdown-on-cognitive-control-after-acute-heroin-administration
#13
Huijun Zhong, Jie Dang, Zhenghao Huo, Zhanbing Ma, Jing Chen, Yong Huang, Yongsheng Zhu, Min Li
Heroin abuse is linked to a deleterious effect on cognitive functioning in the individual. Recent evidences suggest that the serotonin7 receptor (5-HT7R) is engaged in the regulation of cognitive control and the drug use-associated behaviors. However, the role of 5-HT7R in the cognitive control after acute heroin administration has not been studied. The present study aims to investigate whether the knockdown of the 5-HT7R by virus-mediated gene silencing in the medial prefrontal cortex (mPFC) could ameliorate the acute heroin-induced cognitive impairments...
November 16, 2017: Brain Research
https://www.readbyqxmd.com/read/29154925/membrane-cholesterol-depletion-in-cortical-neurons-highlights-altered-nmda-receptor-functionality-in-a-mouse-model-of-amyotrophic-lateral-sclerosis
#14
Alessia Antonini, Silvia Caioli, Luana Saba, Giulia Vindigni, Silvia Biocca, Nadia Canu, Cristina Zona
Amyotrophic Lateral Sclerosis (ALS) is a chronic neurodegenerative disease affecting upper and lower motor neurons, with unknown aetiology. Lipid rafts, cholesterol enriched microdomains of the plasma membrane, have been linked to neurodegenerative disorders like ALS. The NMDA-receptor subcellular localization in lipid rafts is known to play many roles, from modulating memory strength to neurotoxicity. In this study, performed on the widely used G93A mouse model of ALS, we have shown an equal content of total membrane cholesterol in Control and G93A cortical cultures...
November 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29154858/visuospatial-function-predicts-one-week-motor-skill-retention-in-cognitively-intact-older-adults
#15
Jennapher Lingo VanGilder, Caitlin Rose Hengge, Kevin Duff, Sydney Yoshie Schaefer
Motor learning declines with aging, such that older adults retain less motor skill after practice compared to younger adults. However, it remains unclear if these motor learning declines are related to normal cognitive changes associated with aging. The purpose of this study was to examine which cognitive domains would best predict the amount of retention on a motor task one week after training in cognitively intact older adults. Twenty-one adults ages 65 to 84 years old were assessed with Repeatable Battery for the Assessment of Neuropsychological Status, which assesses five cognitive domains (immediate and delayed memory, visuospatial/constructional, language, and attention)...
November 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29154619/complementarity-in-false-memory-illusions
#16
C J Brainerd, V F Reyna
For some years, the DRM illusion has been the most widely studied form of false memory. The consensus theoretical interpretation is that the illusion is a reality reversal, in which certain new words (critical distractors) are remembered as though they are old list words rather than as what they are-new words that are similar to old ones. This reality-reversal interpretation is supported by compelling lines of evidence, but prior experiments are limited by the fact that their memory tests only asked whether test items were old...
November 20, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/29154366/generalization-of-conditioned-auditory-fear-is-regulated-by-maternal-effects-on-ventral-hippocampal-synaptic-plasticity
#17
Huy-Bin Nguyen, Carine Parent, Yiu Chung Tse, Tak Pan Wong, Michael J Meaney
Maternal care shapes individual differences in fear-associated neural circuitry. In rats, maternal licking and grooming (LG) in early life regulates ventral hippocampal (VH) function and plasticity in adulthood, but its consequent effect on the regulation of fear memories remains unknown. We report an effect of maternal care on generalization of learned fear, such that offspring of high LG mothers express generalized fear responses when confronted with neutral stimuli following auditory fear conditioning. These animals simultaneously display a reduction in the magnitude of VH-LTP expressed and reduced input-output transformation in Schaffer Collateral synapses...
November 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29154283/longitudinal-neuroimaging-analysis-in%C3%A2-mild-moderate-alzheimer-s-disease-patients-treated-with-plasma-exchange-with%C3%A2-5-human-albumin
#18
Gemma Cuberas-Borrós, Isabel Roca, Mercè Boada, Lluís Tárraga, Isabel Hernández, Mar Buendia, Lourdes Rubio, Gustavo Torres, Ángel Bittini, Juan A Guzmán-de-Villoria, Francesc Pujadas, Mireia Torres, Laura Núñez, Joan Castell, Antonio Páez
BACKGROUND: Recently, modifications of Aβ1-42 levels in CSF and plasma associated with improvement in memory and language functions have been observed in patients with mild-moderate Alzheimer's disease (AD) treated with plasma exchange (PE) with albumin replacement. OBJECTIVE: To detect structural and functional brain changes in PE-treated AD patients as part of a Phase II clinical trial. METHODS: Patients received between 3 and 18 PE with albumin (Albutein® 5%, Grifols) or sham-PE (controls) for 21 weeks (divided in one intensive and two maintenance periods) followed by 6-month follow-up...
November 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29154281/gradual-cerebral-hypoperfusion-impairs-fear-conditioning-and-object-recognition-learning-and-memory-in-mice-potential-roles-of-neurodegeneration-and-cholinergic-dysfunction
#19
Jogender Mehla, Sean Lacoursiere, Emily Stuart, Robert J McDonald, Majid H Mohajerani
In the present study, male C57BL/6J mice were subjected to gradual cerebral hypoperfusion by implanting an ameroid constrictor (AC) on the left common carotid artery (CCA) and a stenosis on the right CCA. In the sham group, all surgical procedures were kept the same except no AC was implanted and stenosis was not performed. One month following the surgical procedures, fear conditioning and object recognition tests were conducted to evaluate learning and memory functions and motor functions were assessed using a balance beam test...
November 14, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29154279/biological-factors-contributing-to-the-response-to-cognitive-training-in-mild-cognitive-impairment
#20
Jessica Peter, Lena V Schumacher, Verena Landerer, Ahmed Abdulkadir, Christoph P Kaller, Jacob Lahr, Stefan Klöppel
In mild cognitive impairment (MCI), small benefits from cognitive training were observed for memory functions but there appears to be great variability in the response to treatment. Our study aimed to improve the characterization and selection of those participants who will benefit from cognitive intervention. We evaluated the predictive value of disease-specific biological factors for the outcome after cognitive training in MCI (n = 25) and also considered motivation of the participants. We compared the results of the cognitive intervention group with two independent control groups of MCI patients (local memory clinic, n = 20; ADNI cohort, n = 302)...
November 16, 2017: Journal of Alzheimer's Disease: JAD
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