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https://www.readbyqxmd.com/read/28738512/effects-of-nitrogen-deposition-on-soil-microbial-communities-in-temperate-and-subtropical-forests-in-china
#1
Di Tian, Lai Jiang, Suhui Ma, Wenjing Fang, Bernhard Schmid, Longchao Xu, Jianxiao Zhu, Peng Li, Gianalberto Losapio, Xin Jing, Chengyang Zheng, Haihua Shen, Xiaoniu Xu, Biao Zhu, Jingyun Fang
Increasing nitrogen (N) deposition has aroused large concerns because of its potential negative effects on forest ecosystems. Although microorganisms play a vital role in ecosystem carbon (C) and nutrient cycling, the effect of N deposition on soil microbiota still remains unclear. In this study, we investigated the responses of microbial biomass C (MBC) and N (MBN) and microbial community composition to 4-5years of experimentally simulated N deposition in temperate needle-leaf forests and subtropical evergreen broadleaf forests in eastern China, using chloroform fumigation extraction and phospholipid fatty acid (PLFA) methods...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738382/advanced-concepts-in-the-pathophysiology-of-obstructive-sleep-apnea
#2
David P White
The primary pathological event in the disorder obstructive sleep apnea (OSA) is the partial or complete closure of the pharyngeal airway during sleep in an individual with a widely patent airway during wakefulness. This yields an apnea or hypopnea with resulting hypoxia and hypercapnia, and most often requires an arousal to terminate the event. These events occur in a repetitive manner during sleep, yielding intermittent hypoxia and sleep fragmentation with their associated adverse effects on the health and quality of life of the afflicted individual...
2017: Advances in Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28738311/perception-is-key-does-perceptual-sensitivity-and-parenting-behavior-predict-children-s-reactivity-to-others-emotions
#3
Joyce Weeland, Alithe Van den Akker, Meike Slagt, Samuel Putnam
When interacting with other people, both children's biological predispositions and past experiences play a role in how they will process and respond to social-emotional cues. Children may partly differ in their reactions to such cues because they differ in the threshold for perceiving such cues in general. Theoretically, perceptual sensitivity (i.e., the amount of detection of slight, low-intensity stimuli from the external environment independent of visual and auditory ability) might, therefore, provide us with specific information on individual differences in susceptibility to the environment...
July 21, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28737235/does-sensitivity-to-arousal-improve-the-prognostic-value-of-somatosensory-evoked-potentials-in-newborn-infants
#4
Bernard Dachy
No abstract text is available yet for this article.
July 24, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28736892/anger-can-help-a-transactional-model-and-three-pathways-of-the-experience-and-expression-of-anger
#5
Mark H Butler, Kierea C Meloy-Miller, Ryan B Seedall, J Logan Dicus
Anger is a significant human emotion with far-reaching implications for individuals and relationships. We propose a transactional model of anger that highlights its relational relevance and potentially positive function, in addition to problematic malformations. By evolutionary design, physical, self-concept, or attachment threats all similarly trigger diffuse physiological arousal, psychologically experienced as anger-emotion. Anger is first a signaling and motivational system. Anger is then formed to affirming, productive use or malformed to destructive ends...
July 23, 2017: Family Process
https://www.readbyqxmd.com/read/28736798/sympathetic-under-arousal-and-externalizing-behavior-problems-in-children-with-autism-spectrum-disorder
#6
Jason K Baker, Rachel M Fenning, Stephen A Erath, Brian R Baucom, Jacquelyn Moffitt, Mariann A Howland
Children with autism spectrum disorder (ASD) commonly exhibit co-occurring externalizing behavior problems, which can impede learning opportunities and contribute significantly to caregiver stress. Substantial theory and research has linked under-arousal of the sympathetic nervous system to increased externalizing problems in children without ASD, but under-arousal has not been considered as an explanatory mechanism for individual differences among children with ASD. We tested the notion that lower electrodermal activity (EDA) would predict more externalizing problems in children with ASD, and considered the degree to which parent co-regulatory support could buffer this risk...
July 24, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28735914/companion-of-oral-movements-with-limb-movements-in-patients-with-sleep-bruxism-preliminary-findings
#7
Yangping Zhang, Junlan Lu, Zilong Wang, Zhijun Zhong, Miao Xu, Xueliang Zou, Bin Yu, Dongyuan Yao
BACKGROUND: Sleep bruxism (SB) patients show a higher incidence of leg movements than normal subjects. STUDY OBJECTIVES: The study aimed to characterize SB episodes and their relationships with limb movements (LMs). MATERIALS AND METHODS: Polysomnographic (PSG) recordings were performed on eight SB patients. The intervals between the onsets of adjacent SB episodes and LMs were determined and linear correlation analyses were used to estimate the relationship between the SB index and SB episodes in clusters...
August 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28735913/gray-matter-abnormalities-of-the-dorsal-posterior-cingulate-in-sleep-walking
#8
Anna Heidbreder, Ambra Stefani, Elisabeth Brandauer, Ruth Steiger, Christian Kremser, Elke R Gizewski, Peter Young, Werner Poewe, Birgit Högl, Christoph Scherfler
OBJECTIVE: This study aimed to determine whether voxel-based analysis of T1 weighted magnetic resonance imaging (MRI) and diffusion tensor imaging is able to detect alterations of gray and white matter morphometry as well as measures of mean diffusivity and fractional anisotropy in patients with non-rapid eye movement parasomnia. METHODS: 3 Tesla MRI was performed in 14 drug-free, polysomnography-confirmed adult patients with non-rapid eye movement parasomnia (age: 29 ± 4...
August 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28735579/directed-threat-imagery-in-generalized-anxiety-disorder
#9
C Buff, C Schmidt, L Brinkmann, B Gathmann, S Tupak, T Straube
BACKGROUND: Worrying has been suggested to prevent emotional and elaborative processing of fears. In cognitive-behavioral therapy (CBT), generalized anxiety disorder (GAD) patients are exposed to their fears during the method of directed threat imagery by inducing emotional reactivity. However, studies investigating neural correlates of directed threat imagery and emotional reactivity in GAD patients are lacking. The present functional magnetic resonance imaging (fMRI) study aimed at delineating neural correlates of directed threat imagery in GAD patients...
July 24, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28735368/mdma-induced-indifference-to-negative-sounds-is-mediated-by-the-5-ht2a-receptor
#10
K P C Kuypers, R de la Torre, Farre, N Pizarro, L Xicota, J G Ramaekers
BACKGROUND: MDMA has been shown to induce feelings of sociability, a positive emotional bias and enhanced empathy. While previous research has used only visual emotional stimuli, communication entails more than that single dimension and it is known that auditory information is also crucial in this process. In addition, it is, however, unclear what the neurobiological mechanism underlying these MDMA effects on social behaviour is. Previously, studies have shown that MDMA-induced emotional excitability and positive mood are linked to the action on the serotonin (5-HT) 2A receptor...
July 22, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28734217/emotional-arousal-and-recognition-memory-are-differentially-reflected-in-pupil-diameter-responses-during-emotional-memory-for-negative-events-in-younger-and-older-adults
#11
Dorothea Hämmerer, Alexandra Hopkins, Matthew J Betts, Anne Maaß, Ray J Dolan, Emrah Düzel
A better memory for negative emotional events is often attributed to a conjoint impact of increased arousal and noradrenergic modulation (NA). A decline in NA during aging is well documented but its impact on memory function during aging is unclear. Using pupil diameter (PD) as a proxy for NA, we examined age differences in memory for negative events in younger (18-30 years) and older (62-83 years) adults based on a segregation of early arousal to negative events, and later retrieval-related PD responses...
June 30, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28733210/threat-effects-on-human-oculo-motor-function
#12
E N Naranjo, T W Cleworth, J H J Allum, J T Inglis, J Lea, B D Westerberg, M G Carpenter
Neuro-anatomical evidence supports the potential for threat-related factors, such as fear, anxiety and vigilance, to influence brainstem motor nuclei controlling eye movements, as well as the vestibular nuclei. However, little is known about how threat influences human ocular responses, such as eye saccades (ES), smooth pursuit eye tracking (SP), and optokinetic nystagmus (OKN), and whether these responses can be facilitated above normal baseline levels with a natural source of threat. This study was designed to examine the effects of height-induced postural threat on the gain of ES, SP and OKN responses in humans...
July 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28731719/discovery-structure-activity-relationship-and-binding-mode-of-imidazo-1-2-a-pyridine-series-of-autotaxin-inhibitors
#13
Agnès Joncour, Nicolas Desroy, Christopher Housseman, Xavier Bock, Natacha Bienvenu, Laëtitia Cherel, Virginie Labeguere, Christophe Peixoto, Denis Annoot, Luce Lepissier, Jörg Heiermann, Willem Jan Hengeveld, Gregor Pilzak, Alain Monjardet, Emanuelle Wakselman, Veronique Roncoroni, Sandrine Le Tallec, René Galien, Christelle David, Nele Vandervoort, Thierry Christophe, Katja Conrath, Mia Jans, Alexandre Wohlkonig, Robert Touitou, Damien Fleury, Lionel Vercheval, Patrick Mollat, Nicolas Triballeau, Ellen Van der Aar, Reginald Brys, Bertrand Heckmann
Autotaxin (ATX) is a secreted enzyme playing a major role in the production of lysophosphatidic acid (LPA) in blood through hydrolysis of lysophosphatidyl choline (LPC). The ATX-LPA signaling axis arouses a high interest in the drug discovery industry as it has been implicated in several diseases including cancer, fibrotic diseases and inflammation among others. An imidazo[1,2-a]pyridine series of ATX inhibitors was identified out of a high throughput screening (HTS). A co-crystal structure with one of these compounds and ATX revealed a novel binding mode with occupancy of the hydrophobic pocket and channel of ATX but no interaction with zinc ions of the catalytic site...
July 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28731199/achilles-a-homeric-hero-enamoured-with-the-absolute
#14
Nicolas Evzonas
This article explores through a psychoanalytical lens the character of Achilles in Homer's Iliad, the matrix behind the Western conception of heroism. The contribution reveals the psychological link binding the words and acts of the most valiant of warriors in Antiquity, which is situated in myth and termed "the Eros of the absolute." The paroxystic ideality underlying the aforementioned myth, which is rooted in the anthropological need to believe, is at the origin of Achilles' legendary μῆνις, that is, the flood of rage triggered by contests for supremacy, aggravated by the loss of his war comrade, aroused by the drama of aging and death, and then transfigured through song and memory...
July 21, 2017: International Journal of Psycho-analysis
https://www.readbyqxmd.com/read/28730182/tracking-deceased-related-thinking-with-neural-pattern-decoding-of-a-cortical-basal-ganglia-circuit
#15
Noam Schneck, Stefan Haufe, Tao Tu, George A Bonanno, Kevin Ochsner, Paul Sajda, J John Mann
BACKGROUND: Deceased-related thinking is central to grieving and potentially critical to processing of the loss. Self-report measurements might fail to capture important elements of deceased-related thinking and processing. Here, we used a machine learning approach applied to fMRI - known as neural decoding - to develop a measure of ongoing deceased-related processing. METHODS: 23 subjects grieving the loss of a first-degree relative, spouse or partner within 14 months underwent two fMRI tasks...
July 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28729927/fatigue-and-cognition-pupillary-responses-to-problem-solving-in-early-multiple-sclerosis-patients
#16
Sigrid A de Rodez Benavent, Gro O Nygaard, Hanne F Harbo, Siren Tønnesen, Piotr Sowa, Nils I Landrø, Marte Wendel-Haga, Lars Etholm, Kristian B Nilsen, Liv Drolsum, Emilia Kerty, Elisabeth G Celius, Bruno Laeng
INTRODUCTION: In early multiple sclerosis (MS) patients, cognitive changes and fatigue are frequent and troublesome symptoms, probably related to both structural and functional brain changes. Whether there is a common cause of these symptoms in MS is unknown. In theory, an altered regulation of central neuropeptides can lead to changes in regulation of autonomic function, cognitive difficulties, and fatigue. Direct measurements of central neuropeptides are difficult to perform, but measurements of the eye pupil can be used as a reliable proxy of function...
July 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28729852/towards-better-understanding-of-the-pathogenesis-of-neuronal-respiratory-network-in-sudden-perinatal-death
#17
REVIEW
Riffat Mehboob, Mahvish Kabir, Naseer Ahmed, Fridoon Jawad Ahmad
Sudden perinatal death that includes the victims of sudden infant death syndrome, sudden intrauterine death syndrome, and stillbirth are heartbreaking events in the life of parents. Most of the studies about sudden perinatal death were reported from Italy, highlighting two main etiological factors: prone sleeping position and smoking. Other probable contributory factors are prematurity, male gender, lack of breastfeeding, respiratory tract infections, use of pacifiers, infant botulism, extensive use of pesticides and insecticides, etc...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28729115/arousal-and-drug-abuse
#18
REVIEW
Francisco J Urbano, Verónica Bisagno, Edgar Garcia-Rill
The reticular activating system (RAS) is not an amorphous region but distinct nuclei with specific membrane properties that dictate their firing during waking and sleep. The locus coeruleus and raphe nucleus fire during waking and slow wave sleep, with the pedunculopontine nucleus (PPN) firing during both waking and REM sleep, the states manifesting arousal-related EEG activity. Two important discoveries in the PPN in the last 10 years are, 1) that some PPN cells are electrically coupled, and 2) every PPN cell manifests high threshold calcium channels that allow them to oscillate at beta/gamma band frequencies...
July 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28728619/restless-genital-syndrome-differential-diagnosis-and-treatment-with-pramipexole
#19
Emilia Sforza, David Hupin, Frédéric Roche
Restless genital syndrome refers to excessive and persistent sensations of genital and clitoral arousal with the absence of conscious feeling of sexual desire. These sensations have been linked to symptoms of restless legs syndrome (RLS) or an overactive bladder. Restless genital syndrome may be related to small fiber sensory neuropathy of the dorsal nerve of the clitoris, so it more frequently occurs in women. The association with RLS suggests a possible dopaminergic mechanism. We report a case of a 74-year-old woman who presented restless genital symptoms every night in association with RLS symptoms...
July 14, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28728618/binge-viewing-sleep-and-the-role-of-pre-sleep-arousal
#20
Liese Exelmans, Jan Van den Bulck
STUDY OBJECTIVES: To investigate the prevalence of binge viewing, its association with sleep and examine arousal as an underlying mechanism of this association. METHODS: Four hundred twenty-three adults (aged 18-25 years old, 61.9% female) completed an online survey assessing regular television viewing, binge viewing, sleep quality (Pittsburgh Sleep Quality Index), fatigue (Fatigue Assessment Scale), insomnia (Bergen Insomnia Scale), and pre-sleep arousal (Pre-Sleep Arousal Scale)...
July 14, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
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