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https://www.readbyqxmd.com/read/28777757/gba-associated-parkinson-s-disease-progression-in-a-deep-brain-stimulation-cohort
#1
Vanessa Lythe, Dilan Athauda, Jennifer Foley, Niccolò E Mencacci, Marjan Jahanshahi, Lisa Cipolotti, Jonathan Hyam, Ludvic Zrinzo, Marwan Hariz, John Hardy, Patricia Limousin, Tom Foltynie
BACKGROUND: Recent evidence suggests that glucosidase beta acid (GBA) mutations predispose Parkinson's disease (PD) patients to a greater burden of cognitive impairment and non-motor symptoms. This emerging knowledge has not yet been considered in patients who have undergone deep brain stimulation (DBS); a surgery that is generally contraindicated in those with cognitive deficits. OBJECTIVE: To explore the long-term phenotypic progression of GBA-associated PD, in a DBS cohort...
August 4, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28712841/long-term-impact-of-subthalamic-stimulation-on-cognitive-function-in-patients-with-advanced-parkinson-s-disease
#2
M Acera, A Molano, B Tijero, G Bilbao, I Lambarri, R Villoria, J Somme, E Ruiz de Gopegui, I Gabilondo, J C Gomez-Esteban
OBJECTIVE: The aim of this study was to evaluate the effects of deep brain stimulation of the subthalamic nucleus (DBS-SN) on cognitive function in patients with Parkinson's disease (PD) 5 years after surgery. MATERIAL AND METHODS: We conducted a prospective study including 50 patients with PD who underwent DBS-SN (62.5% were men; mean age of 62.2±8.2 years; mean progression time of 14.1±6.3 years). All patients were assessed before the procedure and at one year after surgery; 40 patients were further followed up until the 5-year mark...
July 13, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28696431/synaptic-activity-protects-against-ad-and-ftd-like-pathology-via-autophagic-lysosomal-degradation
#3
Y Akwa, E Gondard, A Mann, E Capetillo-Zarate, E Alberdi, C Matute, S Marty, T Vaccari, A M Lozano, E E Baulieu, D Tampellini
Changes in synaptic excitability and reduced brain metabolism are among the earliest detectable alterations associated with the development of Alzheimer's disease (AD). Stimulation of synaptic activity has been shown to be protective in models of AD beta-amyloidosis. Remarkably, deep brain stimulation (DBS) provides beneficial effects in AD patients, and represents an important therapeutic approach against AD and other forms of dementia. While several studies have explored the effect of synaptic activation on beta-amyloid, little is known about Tau protein...
July 11, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28676842/subthalamic-nucleus-deep-brain-stimulation-in-early-stage-parkinson-s-disease-is-not-associated-with-increased-body-mass-index
#4
Sarah H Millan, Mallory L Hacker, Maxim Turchan, Anna L Molinari, Amanda D Currie, David Charles
Previous studies suggest that deep brain stimulation of the subthalamic nucleus (STN-DBS) for Parkinson's disease (PD) leads to weight gain. This study analyzes changes in body mass index (BMI) in 29 subjects from a prospective, single-blind trial of DBS in early stage PD (age 50-75, Hoehn & Yahr stage II off medication, treated with antiparkinsonian medications for ≥6 months but <4 years, and without a history of motor fluctuations, dyskinesias, or dementia). Subjects were randomized to DBS plus optimal drug therapy (DBS+ODT; n = 15) or ODT (n = 14) and followed for 24 months...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28582689/the-impact-of-white-matter-lesions-on-the-cognitive-outcome-of-subthalamic-nucleus-deep-brain-stimulation-in-parkinson-s-disease
#5
J Blume, M Lange, E Rothenfusser, C Doenitz, U Bogdahn, A Brawanski, J Schlaier
OBJECTIVES: White Matter lesions (WML) are a risk factor for cognitive impairment in Parkinson's disease. There is no clear evidence of reduced general cognitive function after DBS. However, a subgroup of patients develops dementia rapidly after DBS despite careful patient selection processes. The aim of this study was to evaluate the load of WML as a possible risk factor for cognitive decline following STN DBS. PATIENTS AND METHODS: 40 PD-patients receiving bilateral STN-DBS were followed at least three years after surgery to detect dementia...
May 31, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28269510/network-effects-and-pathways-in-deep-brain-stimulation-in-parkinson-s-disease
#6
RANDOMIZED CONTROLLED TRIAL
N Koirala, V Fleischer, O Granert, G Deuschl, M Muthuraman, S Groppa
Deep brain stimulation of subthalamic nucleus (STN-DBS) became a standard therapeutic option in Parkinson's disease (PD), even though the underlying modulated network of STN-DBS is still poorly described. Probabilistic tractography and connectivity analysis as derived from diffusion tensor imaging (DTI) were performed together with modelling of implanted electrode positions and linked postoperative clinical outcome. Fifteen patients with idiopathic PD without dementia were selected for DBS treatment. After pre-processing, probabilistic tractography was run from cortical and subcortical seeds of the hypothesized network to targets represented by the positions of the active DBS contacts...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262813/effects-of-dbs-in-parkinsonian-patients-depend-on-the-structural-integrity-of-frontal-cortex
#7
Muthuraman Muthuraman, Günther Deuschl, Nabin Koirala, Christian Riedel, Jens Volkmann, Sergiu Groppa
While deep brain stimulation of the subthalamic nucleus (STN-DBS) has evolved to an evidence-based standard treatment for Parkinson's disease (PD), the targeted cerebral networks are poorly described and no objective predictors for the postoperative clinical response exist. To elucidate the systemic mechanisms of DBS, we analysed cerebral grey matter properties using cortical thickness measurements and addressed the dependence of structural integrity on clinical outcome. Thirty one patients with idiopathic PD without dementia (23 males, age: 63...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28227763/network-effects-and-pathways-in-deep-brain-stimulation-in-parkinson-s-disease
#8
N Koirala, V Fleischer, O Granert, G Deuschl, M Muthuraman, S Groppa, N Koirala, V Fleischer, O Granert, G Deuschl, M Muthuraman, S Groppa
Deep brain stimulation of subthalamic nucleus (STN-DBS) became a standard therapeutic option in Parkinson's disease (PD), even though the underlying modulated network of STN-DBS is still poorly described. Probabilistic tractography and connectivity analysis as derived from diffusion tensor imaging (DTI) were performed together with modelling of implanted electrode positions and linked postoperative clinical outcome. Fifteen patients with idiopathic PD without dementia were selected for DBS treatment. After pre-processing, probabilistic tractography was run from cortical and subcortical seeds of the hypothesized network to targets represented by the positions of the active DBS contacts...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28113102/key-clinical-milestones-15-years-and-onwards-after-dbs-stn-surgery-a-retrospective-analysis-of-patients-that-underwent-surgery-between-1993-and-2001
#9
Radu Constantinescu, Barbro Eriksson, Yvonne Jansson, Bo Johnels, Björn Holmberg, Thordis Gudmundsdottir, Annika Renck, Peter Berglund, Filip Bergquist
OBJECTIVE: Subthalamic nucleus deep brain stimulation (STN-DBS) is an effective treatment for motor fluctuations in Parkinson's disease (PD), but does not halt disease progression. The long-term deterioration of key functions such as cognition, speech, ability to swallow, gait, urinary bladder control, orientation and reality perception is decisive for patients' independency in daily life. In this paper we investigated patients with advanced PD operated at our center with STN-DBS for at least 15 years ago, in respect to key clinical milestones reflecting their overall function in daily living...
March 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27688200/cognitive-and-psychiatric-outcome-3-years-after-globus-pallidus-pars-interna-or-subthalamic-nucleus-deep-brain-stimulation-for-parkinson-s-disease
#10
Judith A Boel, Vincent J J Odekerken, Ben A Schmand, Gert J Geurtsen, Danielle C Cath, Martijn Figee, Pepijn van den Munckhof, Rob J de Haan, P Richard Schuurman, Rob M A de Bie
BACKGROUND: Effects on non-motor symptoms, mainly cognitive and psychiatric side effects, could influence the decision for either globus pallidus pars interna (GPi) or subthalamic nucleus (STN) deep brain stimulation (DBS) for patients with Parkinson's disease (PD). OBJECTIVE: 1) To compare cognitive and psychiatric outcomes 3 years after GPi DBS versus STN DBS, and 2) to report on occurrence of suicidal ideation, psychiatric diagnoses, social functioning, and marital satisfaction 3 years after DBS...
December 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/27567810/a-phase-ii-study-of-fornix-deep-brain-stimulation-in-mild-alzheimer-s-disease
#11
Andres M Lozano, Lisa Fosdick, M Mallar Chakravarty, Jeannie-Marie Leoutsakos, Cynthia Munro, Esther Oh, Kristen E Drake, Christopher H Lyman, Paul B Rosenberg, William S Anderson, David F Tang-Wai, Jo Cara Pendergrass, Stephen Salloway, Wael F Asaad, Francisco A Ponce, Anna Burke, Marwan Sabbagh, David A Wolk, Gordon Baltuch, Michael S Okun, Kelly D Foote, Mary Pat McAndrews, Peter Giacobbe, Steven D Targum, Constantine G Lyketsos, Gwenn S Smith
BACKGROUND: Deep brain stimulation (DBS) is used to modulate the activity of dysfunctional brain circuits. The safety and efficacy of DBS in dementia is unknown. OBJECTIVE: To assess DBS of memory circuits as a treatment for patients with mild Alzheimer's disease (AD). METHODS: We evaluated active "on" versus sham "off" bilateral DBS directed at the fornix-a major fiber bundle in the brain's memory circuit-in a randomized, double-blind trial (ClinicalTrials...
September 6, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27539594/tau-amyloid-beta-and-deep-brain-stimulation-aiming-to-restore-cognitive-deficit-in-alzheimer-s-disease
#12
Siddhartha Mondragón-Rodríguez, George Perry, Fernando Pena-Ortega, Sylvain Williams
BACKGROUND: The last two decades have seen a great advance in the data that supports the two current hypotheses in Alzheimer`s disease field, the amyloid beta hypothesis and the tau hypothesis. Not surprisingly, Aβ and tau proteins are currently the major therapeutic research targets for AD treatment. Unfortunately, nothing but moderate success has emerged from such therapeutic approaches. With this in mind, we will discuss deep brain stimulation as a promising therapeutic strategy that aims to restore brain activity...
2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/27084221/the-diagnostic-challenge-of-divry-van-bogaert-and-sneddon-syndrome-report-of-three-cases-and-literature-review
#13
REVIEW
Anna Bersano, Michela Morbin, Elisa Ciceri, Gloria Bedini, Peter Berlit, Michele Herold, Stefania Saccucci, Valeria Fugnanesi, Hannes Nordmeyer, Giuseppe Faragò, Mario Savoiardo, Franco Taroni, MariaRita Carriero, Battista Boncoraglio Giorgio, Laura Perucca, Luigi Caputi, Agostino Parati Eugenio, Markus Kraemer
Divry van Bogaert Syndrome (DBS) is a familial juvenile-onset disorder characterized by livedo racemosa, white matter disease, dementia, epilepsy and angiographic finding of "cerebral angiomatosis". A similar syndrome including livedo racemosa and cerebrovascular disease, often associated with anticardiolipin antibodies, has been described as Sneddon Syndrome (SS) highlighting the question whether these two conditions have to be considered different entities or indeed different features of a unique syndrome...
May 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/26944141/a-suggested-minimum-standard-deep-brain-stimulation-evaluation-for-essential-tremor
#14
Neha Shah, Daniel Leventhal, Carol Persad, Parag G Patil, Kelvin L Chou
BACKGROUND: A comprehensive, multidisciplinary screening process for deep brain stimulation (DBS) candidates is recommended, but is often time-consuming. OBJECTIVE: To determine the number of essential tremor (ET) referrals excluded from surgery and why, in order to develop recommendations for a minimum standard DBS evaluation process. METHODS: We reviewed the referrals of 100 consecutive potential DBS candidates with presumed ET at our center, identified reasons for excluding patients from DBS, and the point at which they dropped out of our evaluation process...
March 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/26832921/fornix-deep-brain-stimulation-induced-long-term-spatial-memory-independent-of-hippocampal-neurogenesis
#15
Sarah Hescham, Yasin Temel, Sandra Schipper, Mélanie Lagiere, Lisa-Maria Schönfeld, Arjan Blokland, Ali Jahanshahi
Deep brain stimulation (DBS) is an established symptomatic treatment modality for movement disorders and constitutes an emerging therapeutic approach for the treatment of memory impairment. In line with this, fornix DBS has shown to ameliorate cognitive decline associated with dementia. Nonetheless, mechanisms mediating clinical effects in demented patients or patients with other neurological disorders are largely unknown. There is evidence that DBS is able to modulate neurophysiological activity in targeted brain regions...
March 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/26788743/emerging-applications-of-deep-brain-stimulation
#16
REVIEW
Mayur Sharma, Vikas Naik, Milind Deogaonkar
Deep brain stimulation (DBS) implantation surgery is an established treatment modality for a variety of medical refractory movement disorders such as Parkinson's disease, essential tremors and dystonia. Following the success of DBS in these movement disorders with a high rate of safety and efficacy, there is a resurgence of interest in the utility of this modality in other medical refractory disorders. Consequently, neuromodulation has been explored for a variety of refractory conditions such as neuropsychiatric disorders (major depressive disorders, obsessive-compulsive disorders, addictions), eating disorders including obesity, traumatic brain injury, post-traumatic stress disorders (PTSD), dementias and chronic pain...
June 2016: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/26780572/fornix-deep-brain-stimulation-circuit-effect-is-dependent-on-major-excitatory-transmission-via-the-nucleus-accumbens
#17
Erika K Ross, Joo Pyung Kim, Megan L Settell, Seong Rok Han, Charles D Blaha, Hoon-Ki Min, Kendall H Lee
INTRODUCTION: Deep brain stimulation (DBS) is a circuit-based treatment shown to relieve symptoms from multiple neurologic and neuropsychiatric disorders. In order to treat the memory deficit associated with Alzheimer's disease (AD), several clinical trials have tested the efficacy of DBS near the fornix. Early results from these studies indicated that patients who received fornix DBS experienced an improvement in memory and quality of life, yet the mechanisms behind this effect remain controversial...
March 2016: NeuroImage
https://www.readbyqxmd.com/read/26597361/fornix-deep-brain-stimulation-enhances-acetylcholine-levels-in-the-hippocampus
#18
Sarah Hescham, Ali Jahanshahi, Judith V Schweimer, Stephen N Mitchell, Guy Carter, Arjan Blokland, Trevor Sharp, Yasin Temel
Deep brain stimulation (DBS) of the fornix has gained interest as a potential therapy for advanced treatment-resistant dementia, yet the mechanism of action remains widely unknown. Previously, we have reported beneficial memory effects of fornix DBS in a scopolamine-induced rat model of dementia, which is dependent on various brain structures including hippocampus. To elucidate mechanisms of action of fornix DBS with regard to memory restoration, we performed c-Fos immunohistochemistry in the hippocampus. We found that fornix DBS induced a selective activation of cells in the CA1 and CA3 subfields of the dorsal hippocampus...
November 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/26551238/neuroethical-implications-of-deep-brain-stimulation-in-degenerative-disorders
#19
REVIEW
Daniela Ovadia, Gabriella Bottini
PURPOSE OF REVIEW: The use of deep brain stimulation (DBS) in degenerative diseases involving cognitive impairment raises important ethical issues. This review takes into account the previous publications on the ethical issues of DBS to re-evaluate this technique in the framework of cognitive degenerative diseases, especially Alzheimer's disease and dementia associated to Parkinson's disease. RECENT FINDINGS: The serendipitous discovery of the properties of DBS in memory enhancement fostered the expectations of the patients, the experts, and the industry involved in the production of the devices...
December 2015: Current Opinion in Neurology
https://www.readbyqxmd.com/read/26233582/collective-physician-perspectives-on-non-oral-medication-approaches-for-the-management-of-clinically-relevant-unresolved-issues-in-parkinson-s-disease-consensus-from-an-international-survey-and-discussion-program
#20
REVIEW
P Odin, K Ray Chaudhuri, J T Slevin, J Volkmann, E Dietrichs, P Martinez-Martin, J K Krauss, T Henriksen, R Katzenschlager, A Antonini, O Rascol, W Poewe
Navigate PD was an educational program established to supplement existing guidelines and provide recommendations on the management of Parkinson's disease (PD) refractory to oral/transdermal therapies. It involved 103 experts from 13 countries overseen by an International Steering Committee (ISC) of 13 movement disorder specialists. The ISC identified 71 clinical questions important for device-aided management of PD. Fifty-six experts responded to a web-based survey, rating 15 questions as 'critically important;' these were refined to 10 questions by the ISC to be addressed through available evidence and expert opinion...
October 2015: Parkinsonism & related Disorders
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