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Inferior Olive

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https://www.readbyqxmd.com/read/28887387/neural-architecture-of-selective-stopping-strategies-distinct-brain-activity-patterns-are-associated-with-attentional-capture-but-not-with-outright-stopping
#1
Alexandra Sebastian, Kora Rößler, Michael Wibral, Arian Mobascher, Klaus Lieb, Patrick Jung, Oliver Tüscher
In stimulus-selective stop-signal tasks, the salient stop signal needs attentional processing before genuine response inhibition is completed. Differential prefrontal involvement in attentional capture and response inhibition has been linked to the right inferior frontal junction (IFJ) and ventrolateral prefrontal cortex (VLPFC), respectively. Recently, it has been suggested that stimulus-selective stopping may be accomplished by different strategies: Individuals may selectively inhibit their response only upon detecting a stop signal (Independent Discriminate then Stop strategy) or unselectively whenever detecting a stop or attentional capture signal (Stop then Discriminate strategy)...
September 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28886907/final-efficacy-immunogenicity-and-safety-analyses-of-a-nine-valent-human-papillomavirus-vaccine-in-women-aged-16-26-years-a-randomised-double-blind-trial
#2
Warner K Huh, Elmar A Joura, Anna R Giuliano, Ole-Erik Iversen, Rosires Pereira de Andrade, Kevin A Ault, Deborah Bartholomew, Ramon M Cestero, Edison N Fedrizzi, Angelica L Hirschberg, Marie-Hélène Mayrand, Angela Maria Ruiz-Sternberg, Jack T Stapleton, Dorothy J Wiley, Alex Ferenczy, Robert Kurman, Brigitte M Ronnett, Mark H Stoler, Jack Cuzick, Suzanne M Garland, Susanne K Kjaer, Oliver M Bautista, Richard Haupt, Erin Moeller, Michael Ritter, Christine C Roberts, Christine Shields, Alain Luxembourg
BACKGROUND: Primary analyses of a study in young women aged 16-26 years showed efficacy of the nine-valent human papillomavirus (9vHPV; HPV 6, 11, 16, 18, 31, 33, 45, 52, and 58) vaccine against infections and disease related to HPV 31, 33, 45, 52, and 58, and non-inferior HPV 6, 11, 16, and 18 antibody responses when compared with quadrivalent HPV (qHPV; HPV 6, 11, 16, and 18) vaccine. We aimed to report efficacy of the 9vHPV vaccine for up to 6 years following first administration and antibody responses over 5 years...
September 5, 2017: Lancet
https://www.readbyqxmd.com/read/28867997/autism-spectrum-disorder-related-functional-connectivity-changes-in-the-language-network-in-children-adolescents-and-adults
#3
Yubu Lee, Bo-Yong Park, Oliver James, Seong-Gi Kim, Hyunjin Park
Autism spectrum disorder (ASD) is a neurodevelopmental disability with global implication. Altered brain connectivity in the language network has frequently been reported in ASD patients using task-based functional magnetic resonance imaging (fMRI) compared to typically developing (TD) participants. Most of these studies have focused on a specific age group or mixed age groups with ASD. In the current study, we investigated age-related changes in functional connectivity related measure, degree centrality (DC), in the language network across three age groups with ASD (113 children, 113 adolescents and 103 adults) using resting-state fMRI data collected from the autism brain imaging data exchange repository...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28860598/wfs1-deficient-rats-develop-primary-symptoms-of-wolfram-syndrome-insulin-dependent-diabetes-optic-nerve-atrophy-and-medullary-degeneration
#4
Mario Plaas, Kadri Seppa, Riin Reimets, Toomas Jagomäe, Maarja Toots, Tuuliki Koppel, Tuuli Vallisoo, Mait Nigul, Indrek Heinla, Riho Meier, Allen Kaasik, Andres Piirsoo, Miriam A Hickey, Anton Terasmaa, Eero Vasar
Wolfram syndrome (WS) is a rare autosomal-recessive disorder that is caused by mutations in the WFS1 gene and is characterized by juvenile-onset diabetes, optic atrophy, hearing loss and a number of other complications. Here, we describe the creation and phenotype of Wfs1 mutant rats, in which exon 5 of the Wfs1 gene is deleted, resulting in a loss of 27 amino acids from the WFS1 protein sequence. These Wfs1-ex5-KO232 rats show progressive glucose intolerance, which culminates in the development of diabetes mellitus, glycosuria, hyperglycaemia and severe body weight loss by 12 months of age...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28844644/role-of-corticotropin-releasing-factor-in-cerebellar-motor-control-and-ataxia
#5
Yi Wang, Zhang-Peng Chen, Qian-Xing Zhuang, Xiao-Yang Zhang, Hong-Zhao Li, Jian-Jun Wang, Jing-Ning Zhu
Cerebellar ataxia, characterized by motor incoordination, postural instability, and gait abnormality [1-3], greatly affects daily activities and quality of life. Although accumulating genetic and non-genetic etiological factors have been revealed [4-7], effective therapies for cerebellar ataxia are still lacking. Intriguingly, corticotropin-releasing factor (CRF), a peptide hormone and neurotransmitter [8, 9], is considered a putative neurotransmitter in the olivo-cerebellar system [10-14]. Notably, decreased levels of CRF in the inferior olive (IO), the sole origin of cerebellar climbing fibers, have been reported in patients with spinocerebellar degeneration or olivopontocerebellar atrophy [15, 16], yet little is known about the exact role of CRF in cerebellar motor coordination and ataxia...
September 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28842411/identified-gabaergic-and-glutamatergic-neurons-in-the-mouse-inferior-colliculus-share-similar-response-properties
#6
Munenori Ono, Deborah C Bishop, Douglas L Oliver
GABAergic neurons in the inferior colliculus (IC) play a critical role in auditory information processing, yet their responses to sound are unknown. Here, we used optogenetic methods to characterize the response properties of GABAergic and presumed glutamatergic neurons to sound in the IC. We found that responses to pure tones of both inhibitory and excitatory classes of neurons were similar in their thresholds, response latencies, rate-level functions, and frequency tuning, but GABAergic neurons may have higher spontaneous firing rates...
August 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28841437/new-insights-into-olivo-cerebellar-circuits-for-learning-from-a-small-training-sample
#7
REVIEW
Isao T Tokuda, Huu Hoang, Mitsuo Kawato
Artificial intelligence such as deep neural networks exhibited remarkable performance in simulated video games and 'Go'. In contrast, most humanoid robots in the DARPA Robotics Challenge fell down to ground. The dramatic contrast in performance is mainly due to differences in the amount of training data, which is huge and small, respectively. Animals are not allowed with millions of the failed trials, which lead to injury and death. Humans fall only several thousand times before they balance and walk. We hypothesize that a unique closed-loop neural circuit formed by the Purkinje cells, the cerebellar deep nucleus and the inferior olive in and around the cerebellum and the highest density of gap junctions, which regulate synchronous activities of the inferior olive nucleus, are computational machinery for learning from a small sample...
August 19, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28835332/prospective-observational-study-to-assess-the-need-for-postoperative-antibiotics-following-surgical-incision-and-drainage-of-skin-and-soft-tissue-abscess-in-pediatric-patients
#8
Ian C Glenn, Nicholas E Bruns, Oliver S Soldes, Todd A Ponsky
BACKGROUND: Post-operative antibiotics are often utilized for skin and soft tissue infection (SSTI) requiring surgical incision and drainage (I&D). We propose that antibiotics are unnecessary following I&D. METHODS: Patients aged 3months to 6years with SSTI of the buttocks, groin, thigh, and/or labia requiring I&D were prospectively enrolled. The primary outcome was the proportion of patients requiring re-drainage and/or antibiotics for SSTI recurrence, within 30days...
August 7, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28795396/synaptic-excitation-by-climbing-fibre-collaterals-in-the-cerebellar-nuclei-of-juvenile-and-adult-mice
#9
Marion Najac, Indira M Raman
The inferior olive conveys instructive signals to the cerebellum that drive sensorimotor learning. Inferior olivary neurons transmit their signals via climbing fibres, which powerfully excite Purkinje cells, evoking complex spikes and depressing parallel fibre synapses. Additionally, however, these climbing fibres send collaterals to the cerebellar nuclei (CbN). In vivo and in vitro data suggest that climbing fibre collateral excitation is weak in adult mice, raising the question of whether the primary role of this pathway may be developmental...
August 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28746723/factors-associated-with-achieving-a-body-mass-index-of-less-than-30-after-bariatric-surgery
#10
Oliver A Varban, Ruth B Cassidy, Aaron Bonham, Arthur M Carlin, Amir Ghaferi, Jonathan F Finks
Importance: Achieving a body mass index (BMI, calculated as weight in kilograms divided by height in meters squared) of less than 30 is an important goal of bariatric surgery, given the increased risk for weight-related morbidity and mortality with a BMI above this threshold. Objective: To identify predictors for achieving a BMI of less than 30 after bariatric surgery. Design, Setting, and Participants: This retrospective study used data from the Michigan Bariatric Surgery Collaborative, a statewide quality improvement collaborative that uses a prospectively gathered clinical data registry...
July 26, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28735798/the-etiology-of-essential-tremor-genes-versus-environment
#11
Franziska Hopfner, Rick C Helmich
INTRODUCTION: Essential tremor (ET) is characterized by bilateral upper limb action tremor. Here we review the pathophysiology (cerebral mechanisms) and etiology (genetic and environmental risk factors) of ET. METHODS: We reviewed the literature (until June 2017) by searching PubMed for relevant papers. RESULTS: The pathophysiology of ET involves oscillatory activity in the cortico-olivo-cerebello-thalamic circuit, evidenced by electrophysiological and metabolic imaging...
July 17, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28706504/hypertrophic-olivary-degeneration-and-palatal-or-oculopalatal-tremor
#12
REVIEW
Caroline Tilikete, Virginie Desestret
Hypertrophic degeneration of the inferior olive is mainly observed in patients developing palatal tremor (PT) or oculopalatal tremor (OPT). This syndrome manifests as a synchronous tremor of the palate (PT) and/or eyes (OPT) that may also involve other muscles from the branchial arches. It is associated with hypertrophic inferior olivary degeneration that is characterized by enlarged and vacuolated neurons, increased number and size of astrocytes, severe fibrillary gliosis, and demyelination. It appears on MRI as an increased T2/FLAIR signal intensity and enlargement of the inferior olive...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28659467/motor-learning-in-a-complex-balance-task-and-associated-neuroplasticity-a-comparison-between-endurance-athletes-and-nonathletes
#13
Oliver Seidel, Daniel Carius, Rouven Kenville, Patrick Ragert
Studies suggested that motor expertise is associated with functional and structural brain alterations, which positively affect sensorimotor performance and learning capabilities. The purpose of the present study was to unravel differences in motor skill learning and associated functional neuroplasticity between endurance athletes (EA) and nonathletes (NA). For this purpose, participants had to perform a multimodal balance task (MBT) training on 2 sessions, which were separated by 1 wk. Before and after MBT training, a static balance task (SBT) had to be performed...
September 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28649766/inferior-olivary-projection-to-the-zebrin-ii-stripes-in-lobule-ixcd-of-the-pigeon-flocculus-a-retrograde-tracing-study
#14
Douglas R Wylie, Cristián Gutiérrez-Ibáñez, Jeremy R Corfield, Iulia Craciun, David J Graham, Peter L Hurd
Zebrin II (ZII; a.k.a. aldolase C) is expressed heterogeneously in Purkinje cells (PCs) such that there are sagittal stripes of high expression (ZII+) interdigitated with stripes of little or no expression (ZII-). The pigeon flocculus receives visual-optokinetic information and is important for generating compensatory eye movements. It consists of 4 sagittal zones based on PC complex spike activity (CSA) in response to rotational optokinetic stimuli. There are two zones where CSA responds best to rotation about the vertical axis (VA), interdigitated with two zones where CSA responds best to rotation about an horizontal axis (HA)...
October 1, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28647281/serotonergic-modulation-of-nicotine-induced-kinetic-tremor-in-mice
#15
Naofumi Kunisawa, Higor A Iha, Yuji Nomura, Misaki Onishi, Nami Matsubara, Saki Shimizu, Yukihiro Ohno
We previously demonstrated that nicotine elicited kinetic tremor by elevating the neural activity of the inferior olive via α7 nicotinic acetylcholine (nACh) receptors. Since α7 nACh receptors reportedly facilitate synaptic monoamine release, we explored the role of 5-HT receptors in induction and/or modulation of nicotine tremor. Treatment of mice with nicotine induced kinetic tremor that normally appeared during movement. The 5-HT1A agonist, 8-hydroxydipropylaminotetraline (8-OH-DPAT), significantly enhanced nicotine-induced tremor and the action of 8-OH-DPAT was antagonized by WAY-100135 (5-HT1A antagonist)...
June 9, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28595839/piezosurgery-for-sagittal-split-osteotomy-procedure-duration-and-postoperative-sensory-perturbation
#16
Robert Köhnke, Andreas Kolk, Lan Kluwe, Oliver Ploder
PURPOSE: To evaluate piezosurgery for bilateral sagittal split osteotomy (BSSO) for its duration and inferior alveolar nerve (IAN) perturbation. PATIENTS AND METHODS: In this prospective randomized study, the authors evaluated 100 BSSO procedures in 50 patients. Piezoelectric (group I) and conventional (group II) osteotomies were carried out on each side of the mandible of a patient by 2 specialists. The surgeons had at least 1 year of experience using piezosurgery...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28587761/itv-mid-ventilation-gating-or-couch-tracking-a-comparison-of-respiratory-motion-management-techniques-based-on-4d-dose-calculations
#17
Stefanie Ehrbar, Alexander Jöhl, Adrianna Tartas, Luisa Sabrina Stark, Oliver Riesterer, Stephan Klöck, Matthias Guckenberger, Stephanie Tanadini-Lang
PURPOSE: Respiratory motion-management techniques (MMT) aim to ensure tumor dose coverage while sparing lung tissue. Dynamic treatment-couch tracking of the moving tumor is a promising new MMT and was compared to the internal-target-volume (ITV) concept, the mid-ventilation (MidV) principle and the gating approach in a planning study based on 4D dose calculations. METHODS: For twenty patients with lung lesions, planning target volumes (PTV) were adapted to the MMT and stereotactic body radiotherapy treatments were prepared with the 65%-isodose enclosing the PTV...
July 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28573183/fiducial-markers-coupled-with-3d-pet-ct-offer-more-accurate-radiation-treatment-delivery-for-locally-advanced-esophageal-cancer
#18
Jasmine A Oliver, Puja Venkat, Jessica M Frakes, Jason Klapman, Cynthia Harris, Jaime Montilla-Soler, Gautamy C Dhadham, Baderaldeen A Altazi, Geoffrey G Zhang, Eduardo G Moros, Ravi Shridhar, Sarah E Hoffe, Kujtim Latifi
BACKGROUND AND AIMS:  The role of three-dimensional positron emission tomography/computed tomography (3 D PET/CT) in esophageal tumors that move with respiration and have potential for significant mucosal inflammation is unclear. The aim of this study was to determine the correlation between gross tumor volumes derived from 3 D PET/CT and endoscopically placed fiducial markers. METHODS:  This was a retrospective, IRB approved analysis of 40 patients with esophageal cancer with fiducials implanted and PET/CT...
June 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28562425/rotational-and-collic-vestibular-evoked-myogenic-potential-testing-in-normal-developing-children-and-children-with-combined-attention-deficit-hyperactivity-disorder
#19
Younes Lotfi, Nima Rezazadeh, Abdollah Moossavi, Hojjat Allah Haghgoo, Reza Rostami, Enayatollah Bakhshi, Faride Badfar, Sedigheh Farokhi Moghadam, Vahid Sadeghi-Firoozabadi, Yousef Khodabandelou
OBJECTIVES: Vestibular dysfunction in childhood can have a major effect on a child's developmental process. Balance function has been reported to be poorer in children with attention deficit and hyperactivity disorder (ADHD) than in their typically developing peers. Due to contradictory available evidence and the paucity of research on vestibular function specifically in children with combined ADHD (cADHD), we designed this aged-matched study to assess vestibular function in children with cADHD...
May 26, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28502684/metastatic-neuroendocrine-carcinoma-of-unknown-origin-arising-in-the-femoral-nerve-sheath
#20
Nicholas Candy, Adam Young, Kieren Allinson, Oliver Carr, Jason McMillen, Rikin Trivedi
BACKGROUND: Metastatic neuroendocrine carcinoma of unknown origin is a rare condition, usually presenting with lesions in the liver and/or lung. We present the first reported case of a metastatic neuroendocrine carcinoma of unknown origin arising in the femoral nerve sheath. CASE DESCRIPTION: Magnetic resonance imaging demonstrated what was thought to be a schwannoma in the left femoral nerve sheath in the proximal femoral triangle, immediately inferior to the anterior inferior iliac spine...
August 2017: World Neurosurgery
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