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Antti Latvala, Ralf Kuja-Halkola, Christian Rück, Brian M D'Onofrio, Tomas Jernberg, Catarina Almqvist, David Mataix-Cols, Henrik Larsson, Paul Lichtenstein
Importance: Differences in cardiovascular autonomic activity between individuals with psychiatric disorders and healthy controls have been observed, but whether cardiovascular autonomic abnormalities are associated with subsequent psychiatric disorders is unknown. Objective: To investigate whether differences in cardiac autonomic function as indexed by resting heart rate and blood pressure are associated with psychiatric disorders during the lifetime of men in Sweden...
October 26, 2016: JAMA Psychiatry
Joong-Seok Kim, Si-Hoon Lee, Yoon-Sang Oh, Jeong-Wook Park, Jae-Young An, Hyun-Seok Choi, Kwang-Soo Lee
BACKGROUND: Pulse wave velocity is a marker of arterial stiffness and a surrogate marker of vascular damage. Autonomic abnormalities associated with blood pressure are relatively commonly observed in patients with Parkinson's disease (PD). OBJECTIVE: The purpose of this study was to compare arterial stiffness between patients with PD and controls and investigate the associations between cardiovascular autonomic dysfunction and pulse wave velocity in PD. METHODS: One hundred twenty-five PD patients without diabetes mellitus were enrolled into this study, along with 22 age-matched controls...
October 27, 2016: Neuro-degenerative Diseases
Jeffrey L Ardell, John Andrew Armour
Cardiac control is mediated via a series of reflex control networks involving somata in the (i) intrinsic cardiac ganglia (heart), (ii) intrathoracic extracardiac ganglia (stellate, middle cervical), (iii) superior cervical ganglia, (iv) spinal cord, (v) brainstem, and (vi) higher centers. Each of these processing centers contains afferent, efferent, and local circuit neurons, which interact locally and in an interdependent fashion with the other levels to coordinate regional cardiac electrical and mechanical indices on a beat-to-beat basis...
September 15, 2016: Comprehensive Physiology
Lei Dong, Wen-Mei Yu, Hong Zheng, Mignon L Loh, Silvia T Bunting, Melinda Pauly, Gang Huang, Muxiang Zhou, Hal E Broxmeyer, David T Scadden, Cheng-Kui Qu
Germline activating mutations of the protein tyrosine phosphatase SHP2 (encoded by PTPN11), a positive regulator of the RAS signalling pathway, are found in 50% of patients with Noonan syndrome. These patients have an increased risk of developing leukaemia, especially juvenile myelomonocytic leukaemia (JMML), a childhood myeloproliferative neoplasm (MPN). Previous studies have demonstrated that mutations in Ptpn11 induce a JMML-like MPN through cell-autonomous mechanisms that are dependent on Shp2 catalytic activity...
October 26, 2016: Nature
Chuanrui Chen, Emil Karshalev, Jinxing Li, Fernando Soto, Roxanne Castillo, Isaac Campos, Fangzhi Mou, Jianguo Guan, Joseph Wang
Transient self-destroyed micromotors that autonomously disappear in biological media at controlled rates upon completing their task, without leaving a toxic residue, are presented. The propulsion and degradation characteristics of the self-destroyed Mg/ZnO, Mg/Si, Zn/Fe Janus micromotors and single-component Zn micromotors are described. The degradation of the Janus micromotors relies on the different corrosion rates of their core-shell components. Inductively coupled plasma optical emission spectrometry (ICP) measurements are used to probe the time-dependent degradation of the different constituents of the micromotors...
October 26, 2016: ACS Nano
Simran Chahal, Kanchan Vohra, Ashit Syngle
Peripheral artery disease (PAD) is the major risk factor for cardiovascular disease and lower extremity amputation in patients with diabetes. Autonomic neuropathy is a risk factor for cardiovascular-related morbidity and mortality. Sudomotor dysfunction is well established in type 2 diabetes mellitus (T2DM) and reflects small fibre neuropathy, cardiovascular autonomic neuropathy and peripheral sympathetic autonomic neuropathy. However, the relationship between sudomotor dysfunction and PAD remains unexplored...
October 25, 2016: Neurological Sciences
Myung Kyu Chung, Patrick J LaRiccia
Presented is the first reported case series of chronic neck and back pain associated with breast scars from breast surgery and successfully treated with an integrative medicine assessment and treatment approach, which included the assessment technique of autonomic response testing and the scar therapy technique of neural therapy. Implications for nursing practice are discussed.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4...
October 25, 2016: Holistic Nursing Practice
Charanya Sampathkumar, Yuan-Ju Wu, Mayur Vadhvani, Thorsten Trimbuch, Britta Eickholt, Christian Rosenmund
Mutations in the MECP2 gene cause the neurodevelopmental disorder Rett syndrome (RTT). Previous studies have shown that altered MeCP2 levels result in aberrant neurite outgrowth and glutamatergic synapse formation. However, causal molecular mechanisms are not well understood since MeCP2 is known to regulate transcription of a wide range of target genes. Here, we describe a key role for a constitutive BDNF feed forward signaling pathway in regulating synaptic response, general growth and differentiation of glutamatergic neurons...
October 26, 2016: ELife
Jawad H Butt, Søren Dalsgaard, Christian Torp-Pedersen, Lars Køber, Gunnar H Gislason, Christina Kruuse, Emil L Fosbøl
OBJECTIVES: Beta-blockers relieve the autonomic symptoms of exam-related anxiety and may be beneficial in exam-related and performance anxiety, but knowledge on related psychiatric outcomes is unknown. We hypothesized that beta-blocker therapy for exam-related anxiety identifies young students at risk of later psychiatric events. METHODS: Using Danish nationwide administrative registries, we studied healthy students aged 14-30 years (1996-2012) with a first-time claimed prescription for a beta-blocker during the exam period (May-June); students who were prescribed a beta-blocker for medical reasons were excluded...
October 26, 2016: Journal of Child and Adolescent Psychopharmacology
K Pafili, E Maltezos, N Papanas
No abstract text is available yet for this article.
October 19, 2016: Current Vascular Pharmacology
Otti D'Huys, Johannes Lohmann, Nicholas D Haynes, Daniel J Gauthier
Autonomous Boolean networks are commonly used to model the dynamics of gene regulatory networks and allow for the prediction of stable dynamical attractors. However, most models do not account for time delays along the network links and noise, which are crucial features of real biological systems. Concentrating on two paradigmatic motifs, the toggle switch and the repressilator, we develop an experimental testbed that explicitly includes both inter-node time delays and noise using digital logic elements on field-programmable gate arrays...
September 2016: Chaos
Yi Zhang, Soichiro Kitazawa, Ivan Peran, Natalie Stenzoski, Scott A McCallum, Daniel P Raleigh, Catherine Ann Royer
Understanding protein folding mechanisms and their sequence dependence requires the determination of residue-specific kinetic rate constants for the folding and unfolding reactions. Conventional two dimensional NMR, such as HSQC experiments, can provide residue-specific information for proteins. However, folding is generally too fast for such experiments. ZZ-exchange NMR spectroscopy allows determination of folding and unfolding rates on much faster timescales, yet even this regime is not fast enough for many protein folding reactions...
October 26, 2016: Journal of the American Chemical Society
Pan Chi
The efficacy of laparoscopic total mesorectum excision (TME) has been confirmed by many clinical trials and guidelines. But two issues on laparoscopic TME are still questioned, including the integrity of specimen membrane of TME and the incidence of postoperative sexual dysfunction. According to my experiences and the primary results of the multicenter clinical trial (LASRE, identifier: NCT01899547) conducted by me, the integrity of the specimen membrane of laparoscopic TME is not inferior to the open TME...
October 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
Sampathkumar Rangasamy, Shannon Olfers, Brittany Gerald, Alex Hilbert, Sean Svejda, Vinodh Narayanan
Rett syndrome (RTT) is a neurodevelopmental disorder caused by mutation in the X-linked MECP2 gene, encoding methyl-CpG-binding protein 2. We have created a mouse model ( Mecp2 A140V "knock-in" mutant) expressing the recurrent human MECP2 A140V mutation linked to an X-linked mental retardation/Rett syndrome phenotype. Morphological analyses focused on quantifying soma and nucleus size were performed on primary hippocampus and cerebellum granule neuron (CGN) cultures from mutant ( Mecp2(A140V/y)) and wild type ( Mecp2(+/y)) male mice...
2016: F1000Research
Su Min Lim, Byung-Ok Choi, Seong-Il Oh, Won Jun Choi, Ki-Wook Oh, Minyeop Nahm, Yuanchao Xue, Jae Hyeok Choi, Ji Young Choi, Young-Eun Kim, Ki Wha Chung, Xiang-Dong Fu, Chang-Seok Ki, Seung Hyun Kim
Krabbe disease (KD) is an autosomal recessive neurodegenerative disorder caused by defective β-galactosylceramidase (GALC), a lysosomal enzyme responsible for cleavage of several key substrates including psychosine. Accumulation of psychosine to the cytotoxic levels in KD patients is thought to cause dysfunctions in myelinating glial cells based on a comprehensive study of demyelination in KD. However, recent evidence suggests myelin-independent neuronal death in the murine model of KD, thus indicating defective GALC in neurons as an autonomous mechanism for neuronal cell death in KD...
October 21, 2016: Oncotarget
Allison P Anderson, Abigail M Fellows, Kim A Binsted, Mark T Hegel, Jay C Buckey
INTRODUCTION: Living in an isolated, confined environment (ICE) can induce conflict, stress, and depression. Computer-based behavioral health countermeasures are appealing for training and treatment in ICEs because they provide confidentiality and do not require communication with the outside environment. We evaluated the Virtual Space Station (VSS), a suite of interactive computer-delivered psychological training and treatment programs, at the Hawaii Space Exploration Analog and Simulation (HI-SEAS) III expedition...
2016: Aerospace Medicine and Human Performance
Claire S Allardyce, Paul J Dyson, Michael Grätzel
Undoubtedly, reducing vector populations or their interactions with hosts below a critical level is a practical and proven method of disease control. Introduction of insecticide-treated bed nets has significantly reduced malaria in some parts of the world. However, for many reasons, implementation of such strategies is challenging and the protection offered by particular products limited: bed nets are only effective during sleep. Other methods have been launched, but low customer appeal, high cost, low specificity, and lack of sustainability and effectiveness are often reasons for failure...
October 2016: Chimia
Germán Valero, Paula Cárdenas
The Faculty of Veterinary Medicine and Animal Science of the National Autonomous University of Mexico (UNAM) uses the Moodle learning management system for formative and summative computer assessment. The authors of this article-the teacher primarily responsible for Moodle implementation and a researcher who is a recent Moodle adopter-describe and discuss the students' and teachers' attitudes to summative and formative computer assessment in Moodle. Item analysis of quiz results helped us to identify and fix poorly performing questions, which greatly reduced student complaints and improved objective assessment...
October 25, 2016: Journal of Veterinary Medical Education
A B Segarra, I Banegas, I Prieto, M Ramirez-Sanchez
INTRODUCTION: Brain asymmetry could be defined as the existence of functional, anatomic or neurochemical differences between both hemispheres. It is a dynamic phenomenon, regulated by endogenous and exogenous factors. Its functional significance is poorly clarified and is only partially understood in very specific cases such as the relationship between the lateralized brain content of dopamine and its motor effects which is specially patent in Parkinson's disease. DEVELOPMENT: The asymmetric brain content of dopamine not only displays lateralized motor effects but also behavioral and autonomic asymmetric consequences...
November 1, 2016: Revista de Neurologia
Adam J Harrington, Aram Raissi, Kacey Rajkovich, Stefano Berto, Jaswinder Kumar, Gemma Molinaro, Jonathan Raduazzo, Yuhong Guo, Kris Loerwald, Genevieve Konopka, Kimberly M Huber, Christopher W Cowan
Numerous genetic variants associated with MEF2C are linked to autism, intellectual disability (ID) and schizophrenia (SCZ) - a heterogeneous collection of neurodevelopmental disorders with unclear pathophysiology. MEF2C is highly expressed in developing cortical excitatory neurons, but its role in their development remains unclear. We show here that conditional embryonic deletion of Mef2c in cortical and hippocampal excitatory neurons (Emx1-lineage) produces a dramatic reduction in cortical network activity in vivo, due in part to a dramatic increase in inhibitory and a decrease in excitatory synaptic transmission...
October 25, 2016: ELife
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