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https://www.readbyqxmd.com/read/28526878/a-data-mining-approach-using-cortical-thickness-for-diagnosis-and-characterization-of-essential-tremor
#1
J Ignacio Serrano, Juan P Romero, Ma Dolores Del Castillo, Eduardo Rocon, Elan D Louis, Julián Benito-León
Essential tremor (ET) is one of the most prevalent movement disorders. Being that it is a common disorder, its diagnosis is considered routine. However, misdiagnoses may occur regularly. Over the past decade, several studies have identified brain morphometric changes in ET, but these changes remain poorly understood. Here, we tested the informativeness of measuring cortical thickness for the purposes of ET diagnosis, applying feature selection and machine learning methods to a study sample of 18 patients with ET and 18 age- and sex-matched healthy control subjects...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526642/-asleep-deep-brain-stimulation-surgery-a-critical-review-of-the-literature
#2
REVIEW
Tsinsue Chen, Zaman Mirzadeh, Francisco A Ponce
OBJECTIVE: Although performing deep brain stimulation (DBS) with the patient under general anesthesia without microelectrode recording (MER) or intraoperative test stimulation (ITS) for movement disorders ("asleep" DBS) has become increasingly popular, its feasibility is based on the untested assumption that stereotactic accuracy correlates with positive clinical outcomes. To investigate outcomes after asleep DBS without MER or neurophysiological testing, we reviewed the medical literature on the topic...
May 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28525942/response-to-comment-on-environmental-exposure-to-manganese-in-air-associations-with-tremor-and-motor-function-by-bowler-et-al-2016
#3
Rosemarie M Bowler, Cheryl L Beseler, Vihra V Gocheva, Michelle A Colledge, George Bollweg, Yangho Kim, Shane W Adams, Danelle T Lobdell
No abstract text is available yet for this article.
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28525812/clinical-characteristics-and-prrt2-gene-mutation-analysis-of-sporadic-patients-with-paroxysmal-kinesigenic-dyskinesia-in-china
#4
Yu Zhang, Lin Li, Wei Chen, Jing Gan, Zhen Guo Liu
OBJECTIVE: As a rare type of movement disorder, paroxysmal kinesigenic dyskinesia mainly affects children and is associated with PRRT2 gene mutation. The objective of our study is to identify whether the sporadic patients share the same genotype-phenotype correlations as familial patients in China. PATIENTS AND METHODS: We investigated the clinical characteristics and PRRT2 gene mutations of 15 sporadic patients with paroxysmal kinesigenic dyskinesia in china. The clinical and investigational data of our patients was recorded and analyzed meticulously...
May 8, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28511263/diagnosis-and-treatment-of-functional-psychogenic-parkinsonism
#5
Kathrin LaFaver, Alberto J Espay
Functional (psychogenic) parkinsonism (FP) is recognized by the mandatory combination of marked slowness without progressive decrement on repetitive manual tasks and variable resistance against passive movements in the absence of cogwheel rigidity. Other functional phenotypes, such as functional tremor and functional gait impairment, may coexist. Although neither necessary nor sufficient for the diagnosis of FP, supportive historical clues include the sudden onset of symptoms and absent or nonphysiologic response to levodopa...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28511261/current-practice-and-the-future-of-deep-brain-stimulation-therapy-in-parkinson-s-disease
#6
Leonardo Almeida, Wissam Deeb, Chauncey Spears, Enrico Opri, Rene Molina, Daniel Martinez-Ramirez, Aysegul Gunduz, Christopher W Hess, Michael S Okun
Deep brain stimulation (DBS) is an effective therapy for Parkinson's disease patients experiencing motor fluctuations, medication-resistant tremor, and/or dyskinesia. Currently, the subthalamic nucleus and the globus pallidus internus are the two most widely used targets, with individual advantages and disadvantages influencing patient selection. Potential DBS patients are selected using the few existing guidelines and the available DBS literature, and many centers employ an interdisciplinary team review of the individual's risk-benefit profile...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28511253/pathophysiology-and-management-of-parkinsonian-tremor
#7
Rick C Helmich, Michiel F Dirkx
Parkinson's tremor is one of the cardinal motor symptoms of Parkinson's disease. The pathophysiology of Parkinson's tremor is different from that of other motor symptoms such as bradykinesia and rigidity. In this review, the authors discuss evidence suggesting that tremor is a network disorder that arises from distinct pathophysiological changes in the basal ganglia and in the cerebellothalamocortical circuit. They also discuss how interventions in this circuitry, for example, deep brain surgery and noninvasive brain stimulation, can modulate or even treat tremor...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28511252/diagnosis-and-management-of-parkinson-s-disease
#8
Arjun Tarakad, Joseph Jankovic
Despite numerous efforts to identify specific and sensitive biomarkers, the diagnosis of Parkinson's disease (PD) is still based on clinical criteria that include the presence of a combination of cardinal motor features (tremor, rigidity, bradykinesia, and postural instability), other motor features (including freezing of gait and abnormal postures), and numerous nonmotor features. In addition, the presence of atypical features may suggest an alternative diagnosis. Levodopa therapy remains the gold standard in the management of motor features of PD...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28511251/the-phenomenology-of-parkinson-s-disease
#9
Christopher W Hess, Mark Hallett
The motor symptoms of Parkinson's disease are not limited to the cardinal symptoms of bradykinesia, rigidity, and resting tremor, but also include a variety of interrelated motor phenomena such as deficits in spatiotemporal planning and movement sequencing, scaling and timing of movements, and intermuscular coordination that can be clinically observed. Although many of these phenomena overlap, a review of the full breadth of the motor phenomenon can aid in the diagnosis and monitoring of disease progression...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28509682/new-neurosurgical-approaches-for-tremor-and-parkinson-s-disease
#10
Alfonso Fasano, Andres M Lozano, Esther Cubo
PURPOSE OF REVIEW: The objective of this review is to gather the newest advances in the surgical treatment of tremor and Parkinson's disease. We will briefly discuss the potential applications of the new technologies of deep brain stimulation (DBS), and we will focus on MRI-guided focused ultrasound (MRgFUS). RECENT FINDINGS: Novel DBS devices are being progressively adopted, particularly electrodes allowing a longer stimulating surface (suitable for multiple targets stimulation) and current radial steering (to minimize side effects of stimulation)...
May 13, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28505985/upper-limb-robotics-applied-to%C3%A2-neurorehabilitation-an-overview-of%C3%A2-clinical-practice
#11
Christophe Duret, Stefano Mazzoleni
BACKGROUND: During the last two decades, extensive interaction between clinicians and engineers has led to the development of systems that stimulate neural plasticity to optimize motor recovery after neurological lesions. This has resulted in the expansion of the field of robotics for rehabilitation. Studies in patients with stroke-related upper-limb paresis have shown that robotic rehabilitation can improve motor capacity. However, few other applications have been evaluated (e.g. tremor, peripheral nerve injuries or other neurological diseases)...
May 10, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28505539/revisiting-bilateral-thalamotomy-for-tremor
#12
REVIEW
Jumana Alshaikh, Paul S Fishman
MRI guided focused ultrasound surgery (MRgFUS) has been FDA approved for unilateral treatment of essential tremor (ET). Before this non-incisional lesioning method can be applied to the treatment of both hemispheres the previous experience with bilateral thalamic ablation must be addressed. In particular, the high incidence of worsening of speech and balance associated with bilateral surgical thalamotomy, a rationale for the development of deep brain stimulation. The highest incidence of these complication occurred in the early years of surgery for movement disorders, when neither MRI nor current stereotactic methods were available...
May 1, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28503363/focused-ultrasound-for-essential-tremor-review-of-the-evidence-and-discussion-of-current-hurdles
#13
REVIEW
Mohammad Rohani, Alfonso Fasano
BACKGROUND: While there is no breakthrough progress in the medical treatment of essential tremor (ET), in the past decades several remarkable achievements happened in the surgical field, such as radiofrequency thalamotomy, thalamic deep brain stimulation, and gamma knife thalamotomy. The most recent advance in this area is magnetic resonance-guided focused ultrasound (MRgFUS). METHODS: The purpose of this review is to discuss the new developments and trials of MRgFUS in the treatment of ET and other tremor disorders...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28497656/identification-of-atypical-porcine-pestivirus-infection-in-swine-herds-in-china
#14
K Zhang, K Wu, J Liu, S Ge, Y Xiao, Y Shang, Z Ning
Atypical porcine pestivirus (APPV) have been detected in swine herds from the USA, Germany, the Netherlands, Spain and most recently in Austria, suggesting a wide geographic distribution of this novel virus. Here, for the first time, we reported APPV infection in swine herds in China. Newborn piglets from two separate swine herds in Guangdong province were found showing typical congenital tremors in July and August 2016. RT-PCR, sequencing and phylogenetic analysis showed APPV infection occurred. Phylogenetic analysis showed that Chinese APPV strains, GD1 and GD2, formed independent branch from the USA, Germany and the Netherlands...
May 11, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28491446/severe-muscle-fasciculations-and-tremor-in-a-cat-with-hypochloraemic-metabolic-alkalosis-secondary-to-duodenal-obstruction
#15
Alison Jukes, Marcus Gunew, Rhett Marshall
CASE SUMMARY: An 18-month-old, female spayed, Australian Mist cat presented with a 24 h history of muscle tremors and inappetence progressing to collapse with generalised muscle fasciculations. The cat was diagnosed with a hypochloraemic metabolic alkalosis due to a duodenal foreign body found to be a trichobezoar at coeliotomy. The cat made a complete recovery after enterotomy to remove the trichobezoar, with cessation of neuromuscular clinical signs and normalisation of its electrolyte and acid-base imbalances...
January 2017: JFMS Open Rep
https://www.readbyqxmd.com/read/28491431/hyperinsulinaemic-hypoglycaemic-syndrome-due-to-acquired-nesidioblastosis-in-a-cat
#16
Lydia E Hambrook, Amanda A Ciavarella, Judith S Nimmo, Julie Wayne
Case summary A 6-year-old, neutered female British Shorthair cat presented with acute-onset weakness and mental dullness. Initially the cat was mildly hyperglycaemic (9.9 mmol/l; reference interval [RI] 3.3-6.7 mmol/l). Over the following 12 h the cat developed central blindness, tremors, intermittent seizures and opisthotonus. Repeat blood sampling revealed a marked hypoglycaemia (0.8 mmol/l). Insulin level (performed on a serum sample collected while the cat was hypoglycaemic) was inappropriately elevated (1575 mIU/l; RI 10-80 mIU/l)...
July 2016: JFMS Open Rep
https://www.readbyqxmd.com/read/28487460/functional-lesional-neurosurgery-for-tremor-a-protocol-for-a-systematic-review-and-meta-analysis
#17
Sebastian R Schreglmann, Joachim K Krauss, Jin Woo Chang, Kailash P Bhatia, Georg Kaegi
INTRODUCTION: The recent introduction of incision-less lesional neurosurgery using Gamma Knife and MRI-guided focused ultrasound has revived interest in lesional treatment options for tremor disorders. Preliminary literature researches reveal that the consistency of treatment effects after lesional neurosurgery for tremor has not formally been assessed yet. Similarly, the efficacy of different targets for lesional treatment and incidence of persistent side effects of lesional neurosurgical interventions has not been comprehensively assessed...
May 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28484420/ocular-tremor-in-parkinson-s-disease-discussion-debate-and-controversy
#18
REVIEW
Diego Kaski, Adolfo M Bronstein
The identification of ocular tremor in a small cohort of patients with Parkinson's disease (PD) had lay somewhat dormant until the recent report of a pervasive ocular tremor as a universal finding in a large PD cohort that was, however, generally absent from a cohort of age-matched healthy subjects. The reported tremor had frequency characteristics similar to those of PD limb tremor, but the amplitude and frequency of the tremor did not correlate with clinical tremor ratings. Much controversy ensued as to the origin of such a tremor, and specifically as to whether a pervasive ocular tremor was a fundamental feature of PD, or rather a compensatory eye oscillation secondary to a transmitted head tremor, and thus a measure of a normal vestibulo-ocular reflex...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28483714/purposeless-oral-activity-induced-by-meta-chlorophenylpiperazine-m-cpp-undefined-tic-like-behaviors
#19
Deborah S Kreiss, Philippe De Deurwaerdère
BACKGROUND: The pathophysiological hypothesis underlying tic disorders in Tourette syndrome (TS) is that basal ganglia are not capable of properly filtering cortical information, leading patients with difficulties in inhibiting unwanted behaviors or impulses. One of the main challenges for furthering such a hypothesis is to find appropriate animal models summarizing some aspects of the disease. METHODS: It has been established for more than 25 years in rodents that the prototypical serotonin (5-HT) agonist meta-chlorophenylpiperazine (m-CPP) elicits purposeless oral movements including chewing behavior...
May 5, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28480854/unusual-manifestation-of-neuroboreliosis-case-report
#20
M Beridze, N Khizanishvili, M Mdivani, O Samushia, N Gogokhia
The paper reported the verified case of neuroboreliosis with unusual clinical presentation of Parkinsonism. Study aimed at establishing the significance of a precise differential diagnosis with substantial analysis of the symptoms of several diseases to avoid the false diagnosis and to conduct the opportune and adequate therapeutic management. We described the case of the diagnosed neuroboreliosis with clinical expression of Multiple Sclerosis (MS) and Parkinsonism. A 44 years old man was diagnosed as MS according to the McDonald's Criteria, who within two years developed typical clinical signs of Parkinsonism...
March 2017: Georgian Medical News
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