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https://www.readbyqxmd.com/read/29244814/forecasting-influenza-like-illness-dynamics-for-military-populations-using-neural-networks-and-social-media
#1
Svitlana Volkova, Ellyn Ayton, Katherine Porterfield, Courtney D Corley
This work is the first to take advantage of recurrent neural networks to predict influenza-like illness (ILI) dynamics from various linguistic signals extracted from social media data. Unlike other approaches that rely on timeseries analysis of historical ILI data and the state-of-the-art machine learning models, we build and evaluate the predictive power of neural network architectures based on Long Short Term Memory (LSTMs) units capable of nowcasting (predicting in "real-time") and forecasting (predicting the future) ILI dynamics in the 2011 - 2014 influenza seasons...
2017: PloS One
https://www.readbyqxmd.com/read/29244542/differential-long-term-medication-impact-on-executive-function-and-delay-aversion-in-adhd
#2
Belen Rubio Morell, Sergio Hernández Expósito
The objective was to compare long-term effects of methylphenidate (MPH) and atomoxetine (ATX) on executive functions (EF) and delay aversion (DAv) in ADHD. A randomized controlled trial was conducted. A comprehensive neuropsychological battery was administered at three moments (Naive, Post-1, Post-2). ADHD participants who showed deficits in the naive evaluation (n = 26) were randomized to receive either MPH (n = 13; Mage = 11 ± 1, MIQ 96 ± 8) or ATX (n = 13; Mage = 10 ± 1, MIQ 106 ± 16...
December 15, 2017: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/29243163/computational-analysis-of-the-utilisation-of-the-shape-memory-effect-and-balloon-expansion-in-fully-polymeric-stent-deployment
#3
Anna C Bobel, Peter E McHugh
The desire to overcome the limitations of cardiovascular metal stents is driven by the global clinical need to improve patient outcomes. The opportunity for fully polymeric stents made from materials like Poly-L-lactide Acid (PLLA) is significant. Unfortunately, this potential has not been fully realised due to pressing concerns regarding the radial strength and recoil associated with material stiffness and recoverability. In an effort to achieve effective and reliable performance, it is conceivable that a certain degree of shape memory effect (SME) could be beneficial in order to improve on high recoil associated with fully polymeric stents...
December 14, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29242809/effect-of-levodopa-carbidopa-intestinal-gel-on-non-motor-symptoms-in-patients-with-advanced-parkinson-s-disease
#4
David G Standaert, Ramon L Rodriguez, John T Slevin, Michael Lobatz, Susan Eaton, Krai Chatamra, Maurizio F Facheris, Coleen Hall, Kavita Sail, Yash J Jalundhwala, Janet Benesh
Background: Levodopa-carbidopa intestinal gel (LCIG; carbidopa-levodopa enteral suspension in the United States), delivered via percutaneous gastrojejunostomy (PEG-J) and titrated in the inpatient setting, is an established treatment option for advanced Parkinson's disease (PD) patients with motor fluctuations. However, long-term prospective data on the efficacy of LCIG on non-motor symptoms and the safety of outpatient titration are limited. Methods: In this 60-week, open-label phase 3b study, LCIG titration was initiated in an outpatient setting following PEG-J placement in PD patients...
November 2017: Movement Disorders Clinical Practice
https://www.readbyqxmd.com/read/29242551/ezh2-phosphorylation-state-determines-its-capacity-to-maintain-cd8-t-memory-precursors-for-antitumor-immunity
#5
Shan He, Yongnian Liu, Lijun Meng, Hongxing Sun, Ying Wang, Yun Ji, Janaki Purushe, Pan Chen, Changhong Li, Jozef Madzo, Jean-Pierre Issa, Jonathan Soboloff, Ran Reshef, Bethany Moore, Luca Gattinoni, Yi Zhang
Memory T cells sustain effector T-cell production while self-renewing in reaction to persistent antigen; yet, excessive expansion reduces memory potential and impairs antitumor immunity. Epigenetic mechanisms are thought to be important for balancing effector and memory differentiation; however, the epigenetic regulator(s) underpinning this process remains unknown. Herein, we show that the histone methyltransferase Ezh2 controls CD8+ T memory precursor formation and antitumor activity. Ezh2 activates Id3 while silencing Id2, Prdm1 and Eomes, promoting the expansion of memory precursor cells and their differentiation into functional memory cells...
December 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/29241675/effect-of-telmisartan-on-preventing-learning-and-memory-deficits-via-peroxisome-proliferator-activated-receptor-%C3%AE-in-vascular-dementia-spontaneously-hypertensive-rats
#6
Yuan Gao, Wei Li, Yali Liu, Yan Wang, Jianchao Zhang, Miao Li, Mengsen Bu
BACKGROUND: This study aimed to explore the effect of telmisartan (TEL), as a partial peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist, in vascular dementia (VaD) rats induced by middle cerebral artery occlusion (MCAO). METHODS: Spontaneously hypertensive rats were divided into 6 groups: the sham group, model group, TEL-treated groups (1, 5, and 10 mg/kg), and TEL + GW9662 (10 mg/kg + 1 mg/kg). Using the MCAO method established the VaD rat model...
December 11, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29241655/citalopram-restores-short-term-memory-deficit-and-non-cognitive-behaviors-in-app-ps1-mice-while-halting-the-advance-of-alzheimer-s-disease-like-pathology
#7
Qin Zhang, Chen Yang, Tianyao Liu, Liang Liu, Fen Li, Yulong Cai, Keyi Lv, Xin Li, Junwei Gao, Dayu Sun, Haiwei Xu, Qingwu Yang, Xiaotang Fan
Alzheimer's disease (AD) is the most common cause of dementia. In addition to cognitive impairments, deficits in non-cognitive behaviors are also common neurological sequelae in AD. Here, we show that complex behavioral deficits in 6-month-old APPswe/PSEN1dE9 (APP/PS1) mice include impairments in object recognition, deficient social interaction, increased depression and buried marbles. Citalopram, one of the selective serotonin reuptake inhibitors (SSRIs), ameliorated the amyloid deposition in AD patients and transgenic animal models...
December 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29241652/acute-administration-of-roflumilast-enhances-immediate-recall-of-verbal-word-memory-in-healthy-young-adults
#8
M A Van Duinen, A Sambeth, P R A Heckman, S Smit, M Tsai, G Lahu, T Uz, A Blokland, J Prickaerts
The need for new and effective treatments for dementia remains indisputably high. Phosphodiesterase inhibitors (PDE-Is) have proven efficacy as cognitive enhancers based on their positive effects in numerous preclinical studies. Especially the PDE4 subfamily is of interest due to its expression in the hippocampus, the key structure for memory formation. The current study investigates the memory enhancing effects of the clinically approved PDE4-I roflumilast in a test battery including the Verbal Learning Task (VLT) combined with electroencephalography (EEG) recording...
December 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29241082/the-effect-of-n-acetylcysteine-and-working-memory-training-on-cocaine-use-craving-and-inhibition-in-regular-cocaine-users-correspondence-of-lab-assessments-and-ecological-momentary-assessment
#9
Mieke H J Schulte, Reinout W Wiers, Wouter J Boendermaker, Anna E Goudriaan, Wim van den Brink, Denise S van Deursen, Malte Friese, Emily Brede, Andrew J Waters
INTRODUCTION: Effective treatment for cocaine use disorder should dampen hypersensitive cue-induced motivational processes and/or strengthen executive control. Using a randomized, double-blind, placebo-controlled intervention, the primary aim of this study was to investigate the effect of N-Acetylcysteine (NAC) and working memory (WM)-training to reduce cocaine use and craving and to improve inhibition assessed in the laboratory and during Ecological Momentary Assessment (EMA). The second aim was to examine correspondence between laboratory and EMA data...
December 11, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29239658/working-memory-training-in-older-adults-bayesian-evidence-supporting-the-absence-of-transfer
#10
Sabrina Guye, Claudia C von Bastian
The question of whether working memory training leads to generalized improvements in untrained cognitive abilities is a longstanding and heatedly debated one. Previous research provides mostly ambiguous evidence regarding the presence or absence of transfer effects in older adults. Thus, to draw decisive conclusions regarding the effectiveness of working memory training interventions, methodologically sound studies with larger sample sizes are needed. In this study, we investigated whether or not a computer-based working memory training intervention induced near and far transfer in a large sample of 142 healthy older adults (65 to 80 years)...
December 2017: Psychology and Aging
https://www.readbyqxmd.com/read/29239657/age-differences-in-the-temporal-properties-of-proactive-interference-in-working-memory
#11
George Samrani, Lars Bäckman, Jonas Persson
The inability to suppress irrelevant information has been suggested as a primary cause of proactive interference (PI), and this deficit may be enhanced in aging. The current study examines age differences and temporal boundaries of PI, by manipulating lure distances in a verbal 2-back working memory task. Both younger and older adults showed effects of interference for proximal 3- and 4-back lures, and this effect was greater for older adults. Whereas younger adults showed less interference during 4-back compared to 3-back lures, in both reaction times and accuracy, older adults improved only in accuracy...
December 2017: Psychology and Aging
https://www.readbyqxmd.com/read/29238473/the-effects-of-cck-8s-on-spatial-memory-and-long-term-potentiation-at-ca1-during-induction-of-stress-in-rats
#12
Malihe Sadeghi, Parham Reisi, Maryam Radahmadi
Objectives: Cholecystokinin (CCK) has been proposed as a mediator in stress. However, it is still not fully documented what are its effects. We aimed to evaluate the effects of systemic administration of CCK exactly before induction of stress on spatial memory and synaptic plasticity at CA1 in rats. Materials and Methods: Male Wistar rats were divided into 4 groups: the control, the control-CCK, the stress and the stress-CCK. Restraint stress was induced 6 hr per day, for 24 days...
December 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29238310/parameter-based-evaluation-of-attentional-impairments-in-schizophrenia-and-their-modulation-by-prefrontal-transcranial-direct-current-stimulation
#13
Nadine Gögler, Irina Papazova, Tatiana Oviedo-Salcedo, Nina Filipova, Wolfgang Strube, Johanna Funk, Hermann J Müller, Kathrin Finke, Alkomiet Hasan
Background: Attentional dysfunctions constitute core cognitive symptoms in schizophrenia, but the precise underlying neurocognitive mechanisms remain to be elucidated. Methods: In this randomized, double-blind, sham-controlled study, we applied, for the first time, a theoretically grounded modeling approach based on Bundesen's Theory of Visual Attention (TVA) to (i) identify specific visual attentional parameters affected in schizophrenia and (ii) assess, as a proof of concept, the potential of single-dose anodal transcranial direct current stimulation (tDCS; 20 min, 2 mA) to the left dorsolateral prefrontal cortex to modulate these attentional parameters...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29238299/the-htm-spatial-pooler-a-neocortical-algorithm-for-online-sparse-distributed-coding
#14
Yuwei Cui, Subutai Ahmad, Jeff Hawkins
Hierarchical temporal memory (HTM) provides a theoretical framework that models several key computational principles of the neocortex. In this paper, we analyze an important component of HTM, the HTM spatial pooler (SP). The SP models how neurons learn feedforward connections and form efficient representations of the input. It converts arbitrary binary input patterns into sparse distributed representations (SDRs) using a combination of competitive Hebbian learning rules and homeostatic excitability control...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/29237813/specificity-of-oral-immune-priming-in-the-red-flour-beetle-tribolium-castaneum
#15
Momir Futo, Marie P Sell, Megan A M Kutzer, Joachim Kurtz
Immune specificity is the degree to which a host's immune system discriminates among various pathogens or antigenic variants. Vertebrate immune memory is highly specific due to antibody responses. On the other hand, some invertebrates show immune priming, i.e. improved survival after secondary exposure to a previously encountered pathogen. Until now, specificity of priming has only been demonstrated via the septic infection route or when live pathogens were used for priming. Therefore, we tested for specificity in the oral priming route in the red flour beetle, Tribolium castaneum For priming, we used pathogen-free supernatants derived from three different strains of the entomopathogen, Bacillus thuringiensis, which express different Cry toxin variants known for their toxicity against this beetle...
December 2017: Biology Letters
https://www.readbyqxmd.com/read/29237780/early-inhibition-of-fatty-acid-synthesis-reduces-generation-of-memory-precursor-effector-t-cells-in-chronic-infection
#16
Samad A Ibitokou, Brian E Dillon, Mala Sinha, Bartosz Szczesny, Añahi Delgadillo, Doaa Reda Abdelrahman, Csaba Szabo, Lutfi Abu-Elheiga, Craig Porter, Demidmaa Tuvdendorj, Robin Stephens
Understanding the mechanisms of CD4 memory T cell (Tmem) differentiation in malaria is critical for vaccine development. However, the metabolic regulation of CD4 Tmem differentiation is not clear, particularly in persistent infections. In this study, we investigated the role of fatty acid synthesis (FAS) in Tmem development in Plasmodium chabaudi chronic mouse malaria infection. We show that T cell-specific deletion and early pharmaceutical inhibition of acetyl CoA carboxylase 1, the rate limiting step of FAS, inhibit generation of early memory precursor effector T cells (MPEC)...
December 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29237665/intermittent-catatonia-and-complex-automatisms-caused-by-frontal-lobe-epilepsy-in-dementia
#17
Robynne George, Alex Langford
An 82-year-old man was admitted to the emergency department following bizarre behaviour. Police had noticed him driving erratically through his village. He did not stop when instructed, drove slowly home and appeared 'vacant' on questioning. While in hospital, he had approximately 15 episodes of catatonia, involving rigidity, negativism, mutism except echolalia and perseveration, automatic obedience and utilisation phenomena, lasting 2-20 min each. Between episodes, he was amnestic but otherwise well. Electroencephalography demonstrated bifrontal slowing with left-sided emphasis, and captured two focal onset partial seizures with the clinical correlate of the syndrome described above...
December 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29236576/destination-memory-accuracy-and-confidence-in-younger-and-older-adults
#18
Tara L Johnson, Susan C Jefferson
Background/Study Context: Nascent research on destination memory-remembering to whom we tell particular information-suggested that older adults have deficits in destination memory and are more confident on inaccurate responses than younger adults. This study assessed the effects of age, attentional resources, and mental imagery on destination memory accuracy and confidence in younger and older adults. METHODS: Using computer format, participants told facts to pictures of famous people in one of four conditions (control, self-focus, refocus, imagery)...
December 13, 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/29234725/computerized-cognitive-training-for-older-diabetic-adults-at-risk-of-dementia-study-protocol-for-a-randomized-controlled-trial
#19
Rachel Bloom, Michal Schnaider-Beeri, Ramit Ravona-Springer, Anthony Heymann, Hai Dabush, Lior Bar, Shirel Slater, Yuri Rassovsky, Alex Bahar-Fuchs
Introduction: Older adults with type 2 diabetes are at high risk of cognitive decline and dementia and form an important target group for dementia risk reduction studies. Despite evidence that computerized cognitive training (CCT) may benefit cognitive performance in cognitively healthy older adults and those with mild cognitive impairment, whether CCT may benefit cognitive performance or improve disease self-management in older diabetic adults has not been studied to date. In addition, whether adaptive difficulty levels and tailoring of interventions to individuals' cognitive profile are superior to generic training remains to be established...
November 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/29234436/fraction-n-butanol-of-radix-notoginseng-protects-pc12-cells-from-a%C3%AE-25-35-induced-cytotoxicity-and-alleviates-cognitive-deficits-in-samp8-mice-by-attenuating-oxidative-stress-and-a%C3%AE-accumulation
#20
Jin-Lan Huang, Ying-Qin Feng, Li-Ru Bai, Mei-Chun Qin, Zhe-Hao Xu, Zhao-Rong Liu, Wen-Bing Chen, Deng-Pan Wu, Zhen-Guo Zhong
Chinese medicine has been used for Alzheimer's disease (AD) treatment for thousands of years with more effective and fewer side effects. Therefore, developing effective potential candidates from Chinese medicine against AD would be considered as critical and efficient therapy for AD treatment. This study was designed to evaluate the neuronal protective effect of fraction n-butanol (NB) of Radix Notoginseng on Aβ25-35-induced PC12 cells, explore the effect of the tested fraction on spatial learning and memory, and characterize the impacts of fraction NB on antioxidant enzymes, Aβ production, and APP and BACE1 expressions...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
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