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Intention Tremor

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https://www.readbyqxmd.com/read/28415166/holmes-tremor-with-shoulder-pain-treated-by-deep-brain-stimulation-of-unilateral-ventral-intermediate-thalamic-nucleus-and-globus-pallidus-internus
#1
Sabri Aydın, Huseyin Canaz, Ezgi Tuna Erdogan, Nazlı Durmaz, Barıs Topcular
A 21-year-old male was admitted with severe right arm and hand tremors after a thalamic hemorrhage caused by a traffic accident. He was also suffering from agonizing pain in his right shoulder that manifested after the tremor. Neurologic examination revealed a disabling, severe, and irregular kinetic and postural tremor in the right arm during target-directed movements. There was also an irregular ipsilateral rest tremor and dystonic movements in the distal part of the right arm. The amplitude was moderate at rest and extremely high during kinetic and intentional movements...
April 18, 2017: Journal of Movement Disorders
https://www.readbyqxmd.com/read/28382853/primary-cerebellar-lymphoma-with-hodgkin-lymphoma-like-morphology-in-a-cat
#2
Yuka Yoshino, James K Chambers, Taichi Nakamori, Yuko Goto-Koshino, Kazuo Nishigaki, Hajime Tsujimoto, Naoaki Matsuki, Hiroyuki Nakayama, Kazuyuki Uchida
A 4-y-old cat exhibited neurologic signs such as wobbling, right head tilt, and intention tremor, and MRI revealed a mass in the cerebellum. The cat died 5 mo after initial presentation, and no neoplastic lesions, other than the cerebellar mass, were observed at autopsy. Histologically, large atypical cells resembling Hodgkin cells, with single large inclusion-like nucleoli, and those resembling Reed-Sternberg cells, with symmetrically arranged nuclei, had infiltrated the left side of the cerebellum and were admixed with small lymphocytes...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28269439/graphical-user-interface-for-a-robotic-workstation-in-a-surgical-environment
#3
A Bielski, C P Lohmann, M Maier, D Zapp, M A Nasseri
Surgery using a robotic system has proven to have significant potential but is still a highly challenging task for the surgeon. An eye surgery assistant has been developed to eliminate the problem of tremor caused by human motions endangering the outcome of ophthalmic surgery. In order to exploit the full potential of the robot and improve the workflow of the surgeon, providing the ability to change control parameters live in the system as well as the ability to connect additional ancillary systems is necessary...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28256785/deep-brain-stimulation-of-the-dentato-rubro-thalamic-tract-outcomes-of-direct-targeting-for-tremor
#4
Albert J Fenoy, Mya C Schiess
OBJECTIVES: Targeting the dentato-rubro-thalamic tract (DRTt) has been suggested to be efficacious in deep brain stimulation (DBS) for tremor suppression, both in case reports and post-hoc analyses. This prospective observational study sought to analyze outcomes after directly targeting the DRTt in tremor patients. METHODS: 20 consecutively enrolled intention tremor patients obtained pre-operative MRI with diffusion tensor (dTi) sequences. Mean baseline tremor amplitude based on The Essential Tremor Rating Assessment Scale was recorded...
March 3, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28251007/a-pediatric-case-of-cowden-syndrome-with-graves-disease
#5
Cláudia Patraquim, Vera Fernandes, Sofia Martins, Ana Antunes, Olinda Marques, José Luís Carvalho, Jorge Correia-Pinto, Carla Meireles, Ana Margarida Ferreira
Cowden syndrome (CS) is a rare dominantly inherited multisystem disorder, characterized by an extraordinary malignant potential. In 80% of cases, the human tumor suppressor gene phosphatase and tensin homolog (PTEN) is mutated. We present a case of a 17-year-old boy with genetically confirmed CS and Graves' disease (GD). At the age of 15, he presented with intention tremor, palpitations, and marked anxiety. On examination, he had macrocephaly, coarse facies, slight prognathism, facial trichilemmomas, abdominal keratoses, leg hemangioma, and a diffusely enlarged thyroid gland...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28227685/graphical-user-interface-for-a-robotic-workstation-in-a-surgical-environment
#6
A Bielski, C P Lohmann, M Maier, D Zapp, M A Nasseri, A Bielski, C P Lohmann, M Maier, D Zapp, M A Nasseri, M A Nasseri, M Maier, D Zapp, C P Lohmann, A Bielski
Surgery using a robotic system has proven to have significant potential but is still a highly challenging task for the surgeon. An eye surgery assistant has been developed to eliminate the problem of tremor caused by human motions endangering the outcome of ophthalmic surgery. In order to exploit the full potential of the robot and improve the workflow of the surgeon, providing the ability to change control parameters live in the system as well as the ability to connect additional ancillary systems is necessary...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28216232/safety-and-efficacy-of-a-nav1-7-selective-sodium-channel-blocker-in-patients-with-trigeminal-neuralgia-a-double-blind-placebo-controlled-randomised-withdrawal-phase-2a-trial
#7
Joanna M Zakrzewska, Joanne Palmer, Valerie Morisset, Gerard Mp Giblin, Mark Obermann, Dominik A Ettlin, Giorgio Cruccu, Lars Bendtsen, Mark Estacion, Dominique Derjean, Stephen G Waxman, Gary Layton, Kevin Gunn, Simon Tate
BACKGROUND: Current standard of care for trigeminal neuralgia is treatment with the sodium channel blockers carbamazepine and oxcarbazepine, which although effective are associated with poor tolerability and the need for titration. BIIB074, a Nav1.7-selective, state-dependent sodium-channel blocker, can be administered at therapeutic doses without titration, and has shown good tolerability in healthy individuals in phase 1 studies. We therefore assessed the safety and efficacy of BIIB074 in patients with trigeminal neuralgia in a phase 2a study...
April 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28176975/familial-aggregation-of-the-cerebellar-signs-in-familial-essential-tremor
#8
Elan D Louis, Nora Hernandez, Karen P Chen, Kelly V Naranjo, Jemin Park, Lorraine N Clark, Ruth Ottman
BACKGROUND: Although the hallmark feature of essential tremor (ET) is kinetic tremor, patients may exhibit additional motor features (e.g., intention tremor and mild gait ataxia) that are markers of an underlying abnormality of cerebellar function. ET is also a highly familial disorder, but we do not know whether the presence and expression of cerebellar signs are similar across family members. There are simply no published data. The alternative possibility is that these features are not heritable...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28166936/cerebellar-disease-of-ruminants
#9
REVIEW
Philippa Gibbons
Cerebellar disease can be congenital or acquired. Clinical signs of cerebellar disease include hypermetric gait in all limbs, normal to increased muscle tone, wide-based stance, swaying, intention tremor, and convulsions. Vestibular signs may be observed. Differential diagnoses for etiology include congenital (hypoplasia, abiotrophy, and lysosomal storage diseases), viral, bacterial, and toxic plants. Animals may present aborted as fetuses or stillborn, be affected at birth, develop disease at a few months old, or acquire the disease later in life...
March 2017: Veterinary Clinics of North America. Food Animal Practice
https://www.readbyqxmd.com/read/28120053/restoring-neurological-physiology-the-innovative-role-of-high-energy-mr-guided-focused-ultrasound-himrgfus-preliminary-data-from-a-new-method-of-lesioning-surgery
#10
Antonella Giugno, Rosario Maugeri, Francesca Graziano, Cesare Gagliardo, Angelo Franzini, Carlo Catalano, Massimo Midiri, Domenico Gerardo Iacopino
BACKGROUND: Tremor is a disabling condition, common to several neurodegenerative diseases. Lesioning procedures and deep brain stimulation, respectively, of the ventralis intermedius nucleus for intentional tremor, and of the subthalamic nucleus for parkinsonian resting tremor, have been introduced in clinical practice for patients refractory to medical treatment. The combination of high-energy focused ultrasound (HIFUS) with sophisticated magnetic resonance (MR) instrumentation, together with accurate knowledge of the stereotactic brain coordinates, represents a revolution in neuromodulation...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28095027/severe-and-extensive-traumatic-axonal-injury-following-minor-and-indirect-head-trauma
#11
Sung Ho Jang, Han Do Lee
OBJECTIVES: This study reports on a patient with mild traumatic brain injury (TBI) who showed severe and extensive traumatic axonal injury (TAI) of various neural tracts following minor and indirect head trauma, which was demonstrated by diffusion tensor tractography (DTT). CASE DESCRIPTION: A 26-year-old female patient suffered from indirect head trauma resulting from flexion-hyperextension injury after being hit from behind by a slowly moving car. At the time of head trauma, she felt tingling sensation on her four extremities; however, she did not experience loss of consciousness...
2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/27999809/reproductive-toxicities-caused-by-swainsonine-from-locoweed-in-mice
#12
Chenchen Wu, Ke Feng, Dezhang Lu, Dujian Yan, Tiesuo Han, Baoyu Zhao
Swainsonine is the primary toxin in locoweeds. It causes intention tremors, reproductive dysfunction, emaciation, and death. The objective of the present study was to evaluate the potential reproductive and developmental toxicities caused by swainsonine in mice. The treatment groups consisting of three generations of mice were given a range of concentrations of swainsonine by intraperitoneal injection (2.50 mg/kg body weight (BW), 1.20 mg/kg BW, 0.60 mg/kg BW, and 0 mg/kg BW). The 0 mg/kg BW group exhibited significantly fewer estrous cycles and an increased number of estrous ones compared to the 2...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27977594/severe-ataxia-due-to-injuries-of-neural-tract-detected-by-diffusion-tensor-tractography-in-a-patient-with-pontine-hemorrhage-a-case-report
#13
Sung Ho Jang, Chul Hoon Chang, Young Jin Jung, Hyeok Gyu Kwon
RATIONALE: We examined injuries of the dentato-rubro-thalamic tract (DRTT), cortico-ponto-cerebellar tract (CPCT), dorsal spinocerebellar tract (SCT), and inferior cerebellar peduncle (ICP) in a patient with severe ataxia following bilateral tegmental pontine hemorrhage (PH), using diffusion tensor tractography (DTT). PATIENT CONCERNS: A 75-year-old female patient underwent conservative management for bilateral tegmental PH. She presented with moderate motor weakness, severe resting and intentional tremor on both hands, and severe truncal ataxia (Scale for Assessment and Rating of Ataxia [25 points/0-40 points: a higher score indicates a worse state]), and she was not able to sit independently...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928778/previously-unreported-biallelic-mutation-in-dnajc19-are-sensorineural-hearing-loss-and-basal-ganglia-lesions-additional-features-of-dilated-cardiomyopathy-and-ataxia-dcma-syndrome
#14
Sema Kalkan Ucar, Johannes A Mayr, René G Feichtinger, Ebru Canda, Mahmut Çoker, Saskia B Wortmann
BACKGROUND: Dilated cardiomyopathy (DCM), non-progressive cerebellar ataxia (A), testicular dysgenesis, growth failure, and 3-methylglutaconic aciduria are the hallmarks of DNAJC19 defect (or DCMA syndrome) due to biallelic mutations in DNAJC19. To date DCMA syndrome has been reported in 19 patients from Canada and in two Finnish siblings. The underlying pathomechanism is unknown; however, DNAJC19 is presumed to be involved in mitochondrial membrane related processes (e.g., protein import and cardiolipin remodeling)...
December 8, 2016: JIMD Reports
https://www.readbyqxmd.com/read/27874491/movement-disorders-in-multiple-sclerosis-and-their-treatment
#15
Günther Deuschl
Hyperkinetic movement disorders such as tremors are not uncommon in patients with multiple sclerosis (MS). The classical feature is intention tremor, whereas rest tremors appear not to occur. Treatment is mainly invasive, with options of Gamma Knife surgery, thalamotomy or deep brain stimulation depending on individual circumstances. Deep brain stimulation is the only option for patients who require a bilateral intervention. All treatment recommendations have only low evidence. Tremors can also be cured spontaneously by a subsequent strategic MS lesion...
December 2016: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/27858575/chronic-electrocorticography-for-sensing-movement-intention-and-closed-loop-deep-brain-stimulation-with-wearable-sensors-in-an-essential-tremor-patient
#16
Jeffrey A Herron, Margaret C Thompson, Timothy Brown, Howard J Chizeck, Jeffrey G Ojemann, Andrew L Ko
Deep brain stimulation (DBS) has become a widespread and valuable treatment for patients with movement disorders such as essential tremor (ET). However, current DBS treatment constantly delivers stimulation in an open loop, which can be inefficient. Closing the loop with sensors to provide feedback may increase power efficiency and reduce side effects for patients. New implantable neuromodulation platforms, such as the Medtronic Activa PC+S DBS system, offer important data sources by providing chronic neural sensing capabilities and a means of investigating dynamic stimulation based on symptom measurements...
November 18, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27783098/-degenerative-cerebellar-diseases-and-differential-diagnoses
#17
W Reith, S Roumia, P Dietrich
CLINICAL/METHODICAL ISSUE: Cerebellar syndromes result in distinct clinical symptoms, such as ataxia, dysarthria, dysmetria, intention tremor and eye movement disorders. STANDARD RADIOLOGICAL METHODS: In addition to the medical history and clinical examination, imaging is particularly important to differentiate other diseases, such as hydrocephalus and multi-infarct dementia from degenerative cerebellar diseases. Degenerative diseases with cerebellar involvement include Parkinson's disease, multiple system atrophy as well as other diseases including spinocerebellar ataxia...
November 2016: Der Radiologe
https://www.readbyqxmd.com/read/27693821/post-traumatic-tremor-and-thalamic-deep-brain-stimulation-evidence-for-use-of-diffusion-tensor-imaging
#18
Sandra G J Boccard, Pedro Rebelo, Binith Cheeran, Alexander Green, James J FitzGerald, Tipu Z Aziz
BACKGROUND: Deep brain stimulation (DBS) is a well-established treatment to reduce tremor, notably in Parkinson disease. DBS may also be effective in post-traumatic tremor, one of the most common movement disorders caused by head injury. However, the cohorts of patients often have multiple lesions that may impact the outcome depending on which fiber tracts are affected. CASE DESCRIPTION: A 20-year-old man presented after road traffic accident with severe closed head injury and polytrauma...
September 29, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27658421/progressive-gait-ataxia-following-deep-brain-stimulation-for-essential-tremor-adverse-effect-or-lack-of-efficacy
#19
Martin M Reich, Joachim Brumberg, Nicolò G Pozzi, Giorgio Marotta, Jonas Roothans, Mattias Åström, Thomas Musacchio, Leonardo Lopiano, Michele Lanotte, Ralph Lehrke, Andreas K Buck, Jens Volkmann, Ioannis U Isaias
Thalamic deep brain stimulation is a mainstay treatment for severe and drug-refractory essential tremor, but postoperative management may be complicated in some patients by a progressive cerebellar syndrome including gait ataxia, dysmetria, worsening of intention tremor and dysarthria. Typically, this syndrome manifests several months after an initially effective therapy and necessitates frequent adjustments in stimulation parameters. There is an ongoing debate as to whether progressive ataxia reflects a delayed therapeutic failure due to disease progression or an adverse effect related to repeated increases of stimulation intensity...
September 21, 2016: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27603204/investigation-of-motor-cortical-plasticity-and-corticospinal-tract-diffusion-tensor-imaging-in-patients-with-parkinsons-disease-and-essential-tremor
#20
Ming-Kuei Lu, Chun-Ming Chen, Jeng-Ren Duann, Ulf Ziemann, Jui-Cheng Chen, Shang-Ming Chiou, Chon-Haw Tsai
Parkinson's disease (PD) and essential tremor (ET) are characterized with motor dysfunctions. Motor circuit dysfunctions can be complementarily investigated by paired associative stimulation (PAS)-induced long-term potentiation (LTP)-like plasticity and diffusion tensor imaging (DTI) of the corticospinal tract (CST). Three groups of twelve subjects with moderate severity PD, ET with intention tremor and healthy controls (HC) were studied. The primary motor cortex (M1) excitability, measured by motor evoked potential (MEP) amplitude and by short-interval and long-interval intracortical inhibition (SICI and LICI) was compared between the three groups before and after PAS...
2016: PloS One
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