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https://www.readbyqxmd.com/read/29332107/the-sleep-architecture-of-saudi-arabian-patients-with-kleine-levin-syndrome
#1
Saad M Al Shareef, Aljohara S Almeneessier, Omeima Hammad, Richard M Smith, Ahmed S BaHammam
To establish baseline sleep architecture during an acute attack of Kleine-Levin syndrome (KLS) in a cohort of Saudi Arabian KLS patients and compare these characteristics with other published cohorts. Methods: This was a retrospective cohort study of the polysomnographic characteristics of 10 typical symptomatic Saudi Arabian KLS patients attending the University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia between 2002 and 2015. Data were captured by nocturnal polysomnography during an acute attack of hypersomnia and compared with other published cohorts identified via a systematic literature search...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29332070/pathophysiologic-basis-of-movement-disorders
#2
Thomas Wichmann
Movement disorders are common and functionally disabling neurologic diseases. Studies over the last decades have investigated the pathophysiology of these diseases in considerable detail, leading to significant insights into their generation of motor disability. While genetically and clinically heterogeneous, most of them are accompanied by prominent and characteristic changes in firing rates and patterns in the basal ganglia, thalamus, and cortex. In recent years, researchers have placed increasing emphasis on the importance of oscillatory changes in firing in these structures, and have discovered that brain areas that were previously considered to be remote from the basal ganglia (such as the cerebellum and the pedunculopontine nucleus) are also highly significant in these disorders...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29332069/the-history-of-movement-disorder-brain-surgery
#3
L Dade Lunsford, Ajay Niranjan
The first surgical procedures for abnormal movement disorders began in the 1930s, when surgeons first proposed ablative techniques of the caudate nucleus or transection of motor (pyramidal) pathways to reduce involuntary movements in patients with Parkinson's related tremor. During the 50-year interval between 1945 and 1995, the development of precise intracranial guiding devices, brain maps, and advanced imaging led to the refinement of appropriate deep brain targets affecting extrapyramidal pathways. Lesional surgery and subsequent neuroaugmentation using deep brain stimulation extended the role of deep brain surgery for a wider group of patients with tremor, rigidity, dyskinesia, and other involuntary movement disorders...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29330612/analysis-of-the-stomatognathic-system-of-children-according-orthodontic-treatment-needs
#4
Simone Cecílio Hallak Regalo, Bárbara de Lima Lucas, Kranya Victoria Díaz-Serrano, Nicolly Parente Ribeiro Frota, Isabela Hallak Regalo, Mariângela Salles Pereira Nassar, Mariah Acioli Righetti, Lígia Franco Oliveira, Lígia Maria Napolitano Gonçalves, Selma Siéssere, Marcelo Palinkas
PURPOSE: The present study evaluated electromyographic activity (EMG), masticatory performance, and tongue strength in children without and with orthodontic treatment needs. PATIENTS AND METHODS: A total of 90 children were screened and divided into the following groups: Group I (no treatment needed; mean age: 8.00 ± 0.43 years; n = 26), Group II (few malocclusions, treatment needed; mean age: 8.89 ± 0.43 years; n = 28), and Group III (slight-to-borderline treatment needed; mean age: 8...
January 12, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/29330487/a-biomarker-characterizing-neurodevelopment-with-applications-in-autism
#5
Di Wu, Jorge V José, John I Nurnberger, Elizabeth B Torres
Despite great advances in neuroscience and genetic studies, our understanding of neurodevelopmental disorders is still quite limited. An important reason is not having objective psychiatric clinical tests. Here we propose a quantitative neurodevelopment assessment by studying natural movement outputs. Movement is central to behaviors: It involves complex coordination, temporal alterations, and precise dynamic controls. We carefully analyzed the continuous movement output data, collected with high definition electromagnetic sensors at millisecond time scales...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29327097/-clinical-and-cognitive-aspects-of-functional-psychogenic-tremor
#6
REVIEW
K E Zeuner, R Schmidt, P Schwingenschuh
Functional (psychogenic) tremor is the most common functional movement disorder. Characteristic clinical features, so called red flags, can help to make the clinical distinction of this type from other tremor disorders. The most common features include the variability of frequency and amplitude. Clinical examination should include different types of distraction including motor or cognitive tasks or testing the influence of suggestibility on tremor amplitude, frequency or direction. Patients often report sudden onset and remissions that may last for months or even years...
January 11, 2018: Der Nervenarzt
https://www.readbyqxmd.com/read/29325902/which-data-should-be-tracked-in-forward-dynamic-optimisation-to-best-predict-muscle-forces-in-a-pathological-co-contraction-case
#7
Colombe Bélaise, Benjamin Michaud, Fabien Dal Maso, Katja Mombaur, Mickaël Begon
The choice of the cost-function for predicting muscle forces during a movement remains a challenge, especially in patients with neuromuscular disorders. Forward dynamics-based optimisations mainly track joint kinematics or torques, combined with a least-excitation criterion. Tracking marker trajectories and/or electromyography (EMG) has rarely been proposed. Our objective was to determine the best tracking objective-function to accurately predict the upper-limb muscle forces. A musculoskeletal model was created and EMG was simulated to obtain a reference movement - a shoulder abduction...
January 4, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29325620/primary-familial-brain-calcifications
#8
Beatriz Quintáns, Joao Oliveira, María-Jesús Sobrido
Primary familial brain calcification (PFBC) is a neurodegenerative disease with characteristic calcium deposits in the basal ganglia and other brain regions. The disease usually presents as a combination of abnormal movements, cognitive and psychiatric manifestations, clinically indistinguishable from other adult-onset neurodegenerative disorders. The differential diagnosis must be established with genetic and nongenetic disorders that can also lead to calcium deposits in encephalic structures. In the past years PFBC causal mutations have been discovered in genes related to calcium phosphate homeostasis (SLC20A2, XPR1) and in genes involved with endothelial function and integrity (PDGFB, PDGFRB)...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29323426/vision-in-children-with-autism-spectrum-disorder-a-critical-review
#9
REVIEW
Julie-Anne Little
Autism spectrum disorder (ASD) is a common neurodevelopmental condition with approximately 1-2 per cent prevalence in the population. The condition has lifelong effects for the individual and family, and early intervention and management helps maximise quality of life and outcomes. Many studies of vision in ASD have attempted to link the behavioural and sensory deficits in ASD with underlying visual processing. From this work, it is clear that individuals with ASD 'see' and process the world differently, but there remain gaps in our understanding...
January 11, 2018: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29323043/neural-computational-modeling-reveals-a-major-role-of-corticospinal-gating-of-central-oscillations-in-the-generation-of-essential-tremor
#10
Hong-En Qu, Chuanxin M Niu, Si Li, Man-Zhao Hao, Zi-Xiang Hu, Qing Xie, Ning Lan
Essential tremor, also referred to as familial tremor, is an autosomal dominant genetic disease and the most common movement disorder. It typically involves a postural and motor tremor of the hands, head or other part of the body. Essential tremor is driven by a central oscillation signal in the brain. However, the corticospinal mechanisms involved in the generation of essential tremor are unclear. Therefore, in this study, we used a neural computational model that includes both monosynaptic and multisynaptic corticospinal pathways interacting with a propriospinal neuronal network...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29316781/quantitative-assessment-of-hand-dysfunction-in-patients-with-early-parkinson-s-disease-and-focal-hand-dystonia
#11
Deepa Kandaswamy, MuthuKumar M, Mathew Alexander, Krishna Prabhu, Mahasampath Gowri S, Srinivasa Babu Krothapalli
Objective: Motor impairments related to hand function are common symptoms in patients with movement disorders, such as Parkinson's disease (PD) and focal hand dystonia (FHD). However, hand dysfunction has not been quantitatively assessed as a clinical tool for screening patient groups from healthy controls (HCs). The aim of our study was 1) to quantitatively assess hand dysfunction in patients with PD and FHD and its usefulness as a screening tool 2) to grade disease severity in PD and FHD based on hand dysfunction...
January 11, 2018: Journal of Movement Disorders
https://www.readbyqxmd.com/read/29315801/the-emerging-role-of-rab-gtpases-in-the-pathogenesis-of-parkinson-s-disease
#12
REVIEW
Yujing Gao, Gabrielle R Wilson, Sarah E M Stephenson, Kiymet Bozaoglu, Matthew J Farrer, Paul J Lockhart
The identification of pathogenic mutations in Ras analog in brain 39B (RAB39B) and Ras analog in brain 32 (RAB32) that cause Parkinson's disease (PD) has highlighted the emerging role of protein trafficking in disease pathogenesis. Ras analog in brain (Rab) Guanosine triphosphatase (GTPase) function as master regulators of membrane trafficking, including vesicle formation, movement along cytoskeletal networks, and membrane fusion. Recent studies have linked Rab GTPases with α-synuclein, Leucine-rich repeat kinase 2, and Vacuolar protein sorting 35, 3 key proteins in PD pathogenesis...
January 9, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29315459/pretherapeutic-functional-neuroimaging-predicts-tremor-arrest-after-thalamotomy
#13
C Tuleasca, E Najdenovska, J Régis, T Witjas, N Girard, J Champoudry, M Faouzi, J-P Thiran, M Bach Cuadra, M Levivier, D Van De Ville
OBJECTIVE: Essential tremor (ET) represents the most common movement disorder. Drug-resistant ET can benefit from standard stereotactic procedures (deep brain stimulation or radiofrequency thalamotomy) or alternatively minimally invasive high-focused ultrasound or radiosurgery. All aim at same target, thalamic ventro-intermediate nucleus (Vim). METHODS: The study included a cohort of 17 consecutive patients, with ET, treated only with left unilateral stereotactic radiosurgical thalamotomy (SRS-T) between September 2014 and August 2015...
January 7, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29305858/identification-of-a-candidate-enhancer-for-dmrt3-involved-in-spastic-cerebral-palsy-pathogenesis
#14
Naoto Kubota, Toshifumi Yokoyama, Nobuhiko Hoshi, Mikita Suyama
Cerebral palsy (CP) is a major neuronal disease and the most common movement disorder in children. Although environmental factors leading to CP have been greatly investigated, the genetic mechanism underlying CP is not well understood. Here we focused on two clinical reports that characterized a deletion involving the KANK1 gene locus in the 9p24.3 region. One report shows spastic CP and the other shows no spastic CP phenotype. Based on the epigenetic status and evolutionary conservation, we first found a functional genomic element at the noncoding region that was deleted only in patients with spastic CP...
January 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29304167/the-language-disorder-of-prion-disease-is-characteristic-of-a-dynamic-aphasia-and-is-rarely-an-isolated-clinical-feature
#15
Diana Caine, Akin Nihat, Philippa Crabb, Peter Rudge, Lisa Cipolotti, John Collinge, Simon Mead
BACKGROUND: Akinetic mutism is a key diagnostic feature of prion diseases, however, their rapidly progressive nature makes detailed investigation of the language disorder in a large cohort extremely challenging. This study aims to position prion diseases in the nosology of language disorders and improve early clinical recognition. METHODS: A systematic, prospective investigation of language disorders in a large cohort of patients diagnosed with prion diseases. 568 patients were included as a sub-study of the National Prion Monitoring Cohort...
2018: PloS One
https://www.readbyqxmd.com/read/29301248/differences-in-the-plasma-proteome-of-patients-with-hypothyroidism-before-and-after-thyroid-hormone-replacement-a-proteomic-analysis
#16
Assim A Alfadda, Hicham Benabdelkamel, Afshan Masood, Anwar A Jammah, Aishah A Ekhzaimy
Thyroid hormone is a potent stimulator of metabolism, playing a critical role in regulating energy expenditure and in key physiological mechanisms, such as growth and development. Although administration of thyroid hormone in the form of levo thyroxine (l-thyroxine) has been used to treat hypothyroidism for many years, the precise molecular basis of its physiological actions remains uncertain. Our objective was to define the changes in circulating protein levels that characterize alterations in thyroid hormone status...
January 1, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29298691/volition-adaptive-control-for-gait-training-using-wearable-exoskeleton-preliminary-tests-with-incomplete-spinal-cord-injury-individuals
#17
Vijaykumar Rajasekaran, Eduardo López-Larraz, Fernando Trincado-Alonso, Joan Aranda, Luis Montesano, Antonio J Del-Ama, Jose L Pons
BACKGROUND: Gait training for individuals with neurological disorders is challenging in providing the suitable assistance and more adaptive behaviour towards user needs. The user specific adaptation can be defined based on the user interaction with the orthosis and by monitoring the user intentions. In this paper, an adaptive control model, commanded by the user intention, is evaluated using a lower limb exoskeleton with incomplete spinal cord injury individuals (SCI). METHODS: A user intention based adaptive control model has been developed and evaluated with 4 incomplete SCI individuals across 3 sessions of training per individual...
January 3, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29298648/optogenetics-of-the-spinal-cord-use-of-channelrhodopsin-proteins-for-interrogation-of-spinal-cord-circuits
#18
Habibur Rahman, Youngpyo Nam, Jae-Hong Kim, Won-Ha Lee, Kyoungho Suk
Spinal cord circuits play a key role in receiving and transmitting somatosensory information from the body and the brain. They also contribute to the timing and coordination of complex patterns of movement. Under disease conditions, such as spinal cord injury and neuropathic pain, spinal cord circuits receive pain signals from peripheral nerves, and are involved in pain development via neurotransmitters and inflammatory mediators released from neurons and glial cells. Despite the importance of spinal cord circuits in sensory and motor functions, many questions remain regarding the relationship between activation of specific cells and behavioral responses...
December 29, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29296627/single-session-communication-with-a-locked-in-patient-by-functional-near-infrared-spectroscopy
#19
Androu Abdalmalak, Daniel Milej, Loretta Norton, Derek B Debicki, Teneille Gofton, Mamadou Diop, Adrian M Owen, Keith St Lawrence
There is a growing interest in the possibility of using functional neuroimaging techniques to aid in detecting covert awareness in patients who are thought to be suffering from a disorder of consciousness. Immerging optical techniques such as time-resolved functional near-infrared spectroscopy (TR-fNIRS) are ideal for such applications due to their low-cost, portability, and enhanced sensitivity to brain activity. The aim of this case study was to investigate for the first time the ability of TR-fNIRS to detect command driven motor imagery (MI) activity in a functionally locked-in patient suffering from Guillain-Barré syndrome...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/29289973/neurological-and-neuropsychological-complications-in-the-course-of-chronic-whipple-s-disease-case-report
#20
Izabela Dymon, Justyna Tabaka-Pradela, Katarzyna Anna Knast, Dominika Dudek, Monika Rudzińska
INTRODUCTION: Whipple's disease (WD) is a chronic, multisystemic infectious disease caused by Gram-positive bacillus Tropheryma whipplei (T.w.). Its common symptoms arise in the digestive system, however, during the infection the CNS (Central Nervous System) may also be affected. AIM: The aim of this work is to present a case report of a patient diagnosed with Whipple's disease with dominant neuropsychological and behavioural complications in the late phase. CONCLUSIONS: Whipple's disease is a rare disease with possible neurological and neuropsychiatric complications...
October 29, 2017: Psychiatria Polska
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