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https://www.readbyqxmd.com/read/28806716/efficient-hardware-implementation-of-the-subthalamic-nucleus-external-globus-pallidus-oscillation-system-and-its-dynamics-investigation
#1
Shuangming Yang, Xile Wei, Jiang Wang, Bin Deng, Chen Liu, Haitao Yu, Huiyan Li
Modeling and implementation of the nonlinear neural system with physiologically plausible dynamic behaviors are considerably meaningful in the field of computational neuroscience. This study introduces a novel hardware platform to investigate the dynamical behaviors within the nonlinear subthalamic nucleus-external globus pallidus system. In order to reduce the implementation complexities, a hardware-oriented conductance-based subthalamic nucleus (STN) model is presented, which can reproduce accurately the dynamical characteristics of biological conductance-based STN cells...
July 26, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28791332/deep-brain-stimulation-of-the-subthalamic-nucleus-selectively-decreases-risky-choice-in-risk-preferring-rats
#2
Wendy K Adams, Cole Vonder Haar, Melanie Tremblay, Paul J Cocker, Mason M Silveira, Sukhbir Kaur, Christelle Baunez, Catharine A Winstanley
Deep brain stimulation of the subthalamic nucleus (STN-DBS) can improve the motor symptoms of Parkinson's disease (PD) and negate the problematic side effects of dopamine replacement therapy. Although there is concern that STN-DBS may enhance the development of gambling disorder and other impulse control disorders in this patient group, recent data suggest that STN-DBS may actually reduce iatrogenic impulse control disorders, and alleviate obsessive-compulsive disorder (OCD). Here, we sought to determine whether STN-DBS was beneficial or detrimental to performance of the rat gambling task (rGT), a rodent analogue of the Iowa Gambling Task (IGT) used to assess risky decision making clinically...
July 2017: ENeuro
https://www.readbyqxmd.com/read/28791246/etiologies-and-posttreatment-conditions-of-thyrotoxic-patients-in-sylhet-division-bangladesh-a-clinical-series
#3
Md Kayes Mahmud, Shahnaz Jalil, Ahm Mahmudur Rahman, Md Mamun-Ur Rashid, Shiny Sultana, Adnan Taher, Lutful Haque, Jannatul Fardous, Kamrun Nahar
OBJECTIVE: The endeavor of the study was to analyze the posttreatment (postradioactive iodine therapy [RAI]) conditions of thyrotoxic patients in a tertiary level hospital. MATERIALS AND METHODS: A retrospective study of 186 patients was conducted from 2012 to 2014 in Institute of Nuclear Medicine and Allied Sciences (INMAS), Sylhet MAG Osmani Medical College Campus. Patients' information regarding the etiologies and their disease status after getting RAI therapy was recorded...
July 2017: Avicenna Journal of Medicine
https://www.readbyqxmd.com/read/28772864/ecotoxicity-of-concretes-with-granulated-slag-from-gray-iron-pilot-production-as-filler
#4
Helena Hybská, Emília Hroncová, Juraj Ladomerský, Karol Balco, Jozef Mitterpach
This paper focuses on research concerning the ecotoxicological properties of granulated slag from the pilot production of gray iron with red mud addition and concrete composites with the application of this slag. Red mud is a hazardous waste generated in the production of aluminium oxide. Negative ecotoxicological tests are, therefore, one of the basic prerequisites for the ability to use granulated slag from gray iron pilot production. Granulated slag and concrete composite samples with various ratios of granulated slag have been subject to ecotoxicity tests: determining root growth inhibition in the highly-cultivated plant Sinapisalba, and determining acute toxicity in Daphniamagna...
May 6, 2017: Materials
https://www.readbyqxmd.com/read/28772275/deep-brain-stimulation-for-tremor-is-there-a-common-structure
#5
Michael Fiechter, Andreas Nowacki, Markus F Oertel, Jens Fichtner, Ines Debove, M Lenard Lachenmayer, Roland Wiest, Claudio L Bassetti, Andreas Raabe, Alain Kaelin-Lang, Michael W Schüpbach, Claudio Pollo
BACKGROUND: Subthalamic nucleus (STN) stimulation has been recognized to control resting tremor in Parkinson disease. Similarly, thalamic stimulation (ventral intermediate nucleus; VIM) has shown tremor control in Parkinson disease, essential, and intention tremors. Recently, stimulation of the posterior subthalamic area (PSA) has been associated with excellent tremor control. Thus, the optimal site of stimulation may be located in the surrounding white matter. AIMS: The objective of this work was to investigate the area of stimulation by determining the contact location correlated with the best tremor control in STN/VIM patients...
August 4, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28769868/hydrogen-sulfide-mediating-both-excitatory-and-inhibitory-effects-in-a-rat-model-of-meningeal-nociception-and-headache-generation
#6
Christiane Teicher, Roberto De Col, Karl Messlinger
BACKGROUND/PURPOSE: Hydrogen sulfide (H2S) is a neuromodulator acting through nitroxyl (HNO) when it reacts with nitric oxide (NO). HNO activates transient receptor potential channels of the ankyrin type 1 (TRPA1) causing release of calcitonin gene-related peptide from primary afferents. Activation of meningeal nociceptors projecting to the human spinal trigeminal nucleus (STN) may lead to headaches. In a rat model of meningeal nociception, the activity of spinal trigeminal neurons was used as read-out for the interaction between H2S and NO...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28761773/deep-brain-stimulation-in-parkinson-s-disease-new-and-emerging-targets-for-refractory-motor-and-nonmotor-symptoms
#7
REVIEW
Dustin Anderson, Grayson Beecher, Fang Ba
Parkinson's disease (PD) is a progressive neurodegenerative condition characterized by bradykinesia, tremor, rigidity, and postural instability (PI), in addition to numerous nonmotor manifestations. Many pharmacological therapies now exist to successfully treat PD motor symptoms; however, as the disease progresses, it often becomes challenging to treat with medications alone. Deep brain stimulation (DBS) has become a crucial player in PD treatment, particularly for patients who have disabling motor complications from medical treatment...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28755172/micro-lesion-effect-of-the-globus-pallidus-internus-with-deep-brain-stimulation-in-parkinson-s-disease-patients
#8
Yi Wang, Peng Li, FeiLong Gong, Yuan Gao, Yang Y Xu, Wei Wang
BACKGROUND: The micro-lesion effect (MLE) has been observed in many Parkinson's disease (PD) patients after deep brain stimulation (DBS) surgery. For subthalamic nucleus (STN) stimulation, the MLE has been reported as a predictor of the long-term efficacy of DBS. However, the research on the MLE in the globus pallidus internus (GPi) is insufficient. In this report, we conducted a study of the correlation between the MLE and improvement of GPi DBS. METHODS: From July 2014 to November 2015, 36 PD patients underwent GPi DBS in our hospital...
July 28, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28742498/subthalamic-nucleus-gamma-activity-increases-not-only-during-movement-but-also-during-movement-inhibition
#9
Petra Fischer, Alek Pogosyan, Damian M Herz, Binith Cheeran, Alexander L Green, James Fitzgerald, Tipu Z Aziz, Jonathan Hyam, Simon Little, Thomas Foltynie, Patricia Limousin, Ludvic Zrinzo, Peter Brown, Huiling Tan
Gamma activity in the subthalamic nucleus (STN) is widely viewed as a pro-kinetic rhythm. Here we test the hypothesis that rather than being specifically linked to movement execution, gamma activity reflects dynamic processing in this nucleus. We investigated the role of gamma during fast stopping and recorded scalp electroencephalogram and local field potentials from deep brain stimulation electrodes in 9 Parkinson's disease patients. Patients interrupted finger tapping (paced by a metronome) in response to a stop-signal sound, which was timed such that successful stopping would occur only in ~50% of all trials...
July 25, 2017: ELife
https://www.readbyqxmd.com/read/28742497/causal-role-for-the-subthalamic-nucleus-in-interrupting-behavior
#10
Kathryn H Fife, Navarre A Gutierrez-Reed, Vivien Zell, Julie Bailly, Christina M Lewis, Adam R Aron, Thomas S Hnasko
Stopping or pausing in response to threats, conflicting information, or surprise is fundamental to behavior. Evidence across species has shown that the subthalamic nucleus (STN) is activated by scenarios involving stopping or pausing, yet evidence that the STN causally implements stops or pauses is lacking. Here we used optogenetics to activate or inhibit mouse STN to test its putative causal role. We first demonstrated that optogenetic stimulation of the STN excited its major projection targets. Next we showed that brief activation of STN projection neurons was sufficient to interrupt or pause a self-initiated bout of licking...
July 25, 2017: ELife
https://www.readbyqxmd.com/read/28738112/central-role-of-protein-kinase-a-in-promoting-trigeminal-nociception-in-an-in-vivo-model-of-temporomandibular-disorders
#11
Lindsey K Koop, Jordan L Hawkins, Lauren E Cornelison, Paul L Durham
AIMS: To investigate cellular changes in the spinal trigeminal nucleus (STN) and trigeminal ganglion (TG) associated with trigeminal nociception mediated by inflammation in the temporomandibular joint (TMJ). METHODS: Male Sprague-Dawley rats (n = 86) were utilized to investigate cellular and behavioral responses to prolonged TMJ inflammation caused by bilateral injection of Complete Freund's Adjuvant (CFA) in the TMJ capsules. To investigate the cellular effects of protein kinase A (PKA) in the STN, rats were injected intrathecally with the selective PKA inhibitor KT5720 prior to injection of CFA into both TMJ capsules...
July 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28735132/asleep-robot-assisted-surgery-for-the-implantation-of-subthalamic-electrodes-provides-the-same-clinical-improvement-and-therapeutic-window-as-awake-surgery
#12
Michel Lefranc, Yassine Zouitina, Mélissa Tir, Philippe Merle, Martial Ouendo, Jean-Marc Constans, Olivier Godefroy, Johann Peltier, Pierre Krystkowiak
OBJECTIVE: To study the impact of not performing an awake clinical evaluation during the robot-assisted implantation subthalamic nucleus deep brain stimulation (STN-DBS) electrodes on the stimulation parameters and clinical outcome in patients with Parkinson's disease (PD). METHODS: A total of 23 PD patients underwent robot-assisted surgery for the bilateral implantation of STN-DBS electrodes. Thirteen patients received general anesthesia (GA) and a limited intraoperative evaluation (side effects only), whereas 10 received local anesthesia and a full evaluation...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28725548/age-dependent-lasting-effects-of-methylphenidate-on-the-gabaergic-system-of-adhd-patients
#13
Michelle M Solleveld, Anouk Schrantee, Nicolaas A J Puts, Liesbeth Reneman, Paul J Lucassen
Stimulants are the main pharmacological treatment for patients with attention-deficit/hyperactivity disorder (ADHD). Their current prescription rates are rising, both in children, adolescents and adults. Related to the impulse control phenotype, both preclinical and clinical studies have demonstrated lower γ-amino butyric acid (GABA) levels in prefrontal brain regions in ADHD. Whereas stimulant treatment increases GABA levels, preclinical studies have suggested that stimulant treatment effects may be age-dependent...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28725361/spatial-heterogeneity-distribution-of-soil-total-nitrogen-and-total-phosphorus-in-the-yaoxiang-watershed-in-a-hilly-area-of-northern-china-based-on-geographic-information-system-and-geostatistics
#14
Yu Liu, Peng Gao, Liyong Zhang, Xiang Niu, Bing Wang
Soil total nitrogen (STN) and total phosphorus (STP) are important indicators of soil nutrients and the important indexes of soil fertility and soil quality evaluation. Using geographic information system (GIS) and geostatistics, the spatial heterogeneity distribution of STN and STP in the Yaoxiang watershed in a hilly area of northern China was studied. The results showed that: (1) The STN and STP contents showed a declining trend with the increase in soil depth; the variation coefficients (Cv) of STN and STP in the 0- to 10-cm soil layer (42...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28717851/multidrug-resistant-salmonellae-isolated-in-japanese-quails-reared-in-abeokuta-nigeria
#15
Ezekiel O Omoshaba, F O Olufemi, O E Ojo, A O Sonibare, M Agbaje
Salmonellosis is a major bacterial disease causing huge economic losses in the poultry industry worldwide. This study was carried out to determine the period prevalence and antimicrobial susceptibility of Salmonella enterica in Japanese quails in Abeokuta, Nigeria. Four hundred cloacal swabs of quail birds were collected from 4 locations within Abeokuta. Salmonella was isolated from the samples using conventional methods for selective isolation of Salmonella and biochemical identification. Isolates were confirmed by polymerase chain reaction assays for the amplification and detection of Salmonella-associated virulence genes (invA and stn) using specific primers...
July 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28716237/long-term-follow-up-on-quality-of-life-and-its-relationship-to-motor-and-cognitive-functions-in-parkinson-s-disease-after-deep-brain-stimulation
#16
Tatsuya Yamamoto, Tomoyuki Uchiyama, Yoshinori Higuchi, Masato Asahina, Shigeki Hirano, Yoshitaka Yamanaka, Liu Weibing, Satoshi Kuwabara
INTRODUCTION: We aimed to examine temporal changes in health-related quality of life (HRQOL) and its relationship with motor and cognitive functions in patients with Parkinson's disease (PD) after subthalamic nucleus deep brain stimulation (STN-DBS). METHODS: In total, 31 patients with PD were enrolled in this study (mean age: 66.7±0.9years; mean disease duration: 11.6±3.7years). Participants completed the Unified Parkinson's Disease Rating Scale and the Parkinson's Disease Questionnaire-39...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28712884/the-supraorbital-region-revisited-an-anatomic-exploration-of-the-neuro-vascular-bundle-with-regard-to-frontal-migraine-headache
#17
Valeria Berchtold, Hannes Stofferin, Bernhard Moriggl, Erich Brenner, Reinhard Pauzenberger, Marko Konschake
BACKGROUND: Recent findings on the pathogenesis of frontal migraine headache support, besides a central vasogenic cause, an alternative peripheral mechanism involving compressed craniofacial nerves. This is further supported by the efficiency of botulinum toxin injections as a new treatment option in frontal migraine headache patients. METHODS: The supraorbital regions of 22 alcohol-glycerine-embalmed facial halves of both sexes were dissected. Both the supratrochlear and supraorbital nerves (STN and SON, respectively) were identified, and their relationship with the corrugator supercilii muscle (CSM) was investigated by dissection and ultrasound...
June 27, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28706748/comparison-of-globus-pallidus-interna-and-subthalamic-nucleus-in-deep-brain-stimulation-for-parkinson-disease-an-institutional-experience-and-review
#18
REVIEW
Shazia Mirza, Umar Yazdani, Richard Dewey Iii, Neepa Patel, Richard B Dewey, Svjetlana Miocinovic, Shilpa Chitnis
Deep Brain Stimulation (DBS) has revolutionized the lives of patients of Parkinson disease, offering therapeutic options to those not benefiting entirely from medications alone. With its proven track record of outperforming the best medical management, the goal is to unlock the full potential of this therapy. Currently, the Globus Pallidus Interna (GPi) and Subthalamic Nucleus (STN) are both viable targets for DBS, and the choice of site should focus on the constellation of symptoms, both motor and nonmotor, which are key determinants to quality of life...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28705699/posterolateral-trajectories-favor-a-longer-motor-domain-in-stn-dbs-for-parkinson-s-disease
#19
Idit Tamir, Odeya Marmor-Levin, Renana Eitan, Hagai Bergman, Zvi Israel
OBJECTIVE: The clinical outcome of Parkinson's disease (PD) patients that undergo Subthalamic Nucleus Deep Brain Stimulation (STN DBS) is, in part, determined by the length of the electrode trajectory through the motor STN domain, the Dorso-Lateral Oscillatory Region (DLOR). Trajectory length has been found to correlate with the stimulation-related improvement in patients' motor function (estimated by part III of the United Parkinson's Disease Rating Score (UPDRS)). Therefore, it seems that ideally trajectories should have maximal DLOR length...
July 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28701941/rapid-alleviation-of-parkinson-s-disease-symptoms-via-electrostimulation-of-intrinsic-auricular-muscle-zones
#20
Yusuf O Cakmak, Hülya Apaydin, Güneş Kiziltan, Ayşegül Gündüz, Burak Ozsoy, Selim Olcer, Hakan Urey, Ozgur O Cakmak, Yasemin G Ozdemir, Sibel Ertan
Background: Deep brain stimulation of the subthalamic nucleus (STN-DBS) and the pedunculopontine nucleus (PPN) significantly improve cardinal motor symptoms and postural instability and gait difficulty, respectively, in Parkinson's disease (PD). Objective and Hypothesis: Intrinsic auricular muscle zones (IAMZs) allow the potential to simultaneously stimulate the C2 spinal nerve, the trigeminal nerve, the facial nerve, and sympathetic and parasympathetic nerves in addition to providing muscle feedback and control areas including the STN, the PPN and mesencephalic locomotor regions...
2017: Frontiers in Human Neuroscience
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