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Deep Brain Stimulation Alzheimer's

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https://www.readbyqxmd.com/read/28436389/ethical-considerations-for-deep-brain-stimulation-trials-in-patients-with-early-onset-alzheimer-s-disease
#1
John Noel M Viaña, Merlin Bittlinger, Frederic Gilbert
Several studies of deep brain stimulation (DBS) of the fornix or the nucleus basalis of Meynert have been recently conducted in people with Alzheimer's disease, with several recruiting participants <65 and thus have early-onset Alzheimer's disease (EOAD). Although EOAD accounts for less than 5.5% of AD cases, ethical considerations must still be made when performing DBS trials including these participants since a portion of people with EOAD, especially those possessing autosomal-dominant mutations, have an atypical and more aggressive disease progression...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28385550/currents-of-memory-recent-progress-translational-challenges-and-ethical-considerations-in-fornix-deep-brain-stimulation-trials-for-alzheimer-s-disease
#2
REVIEW
John Noel M Viaña, James C Vickers, Mark J Cook, Frederic Gilbert
The serendipitous discovery of triggered autobiographical memories and eventual memory improvement in an obese patient who received fornix deep brain stimulation in 2008 paved the way for several phase I and phase II clinical trials focused on the safety and efficacy of this potential intervention for people with Alzheimer's disease. In this article, we summarize clinical trials and case reports on fornix deep brain stimulation for Alzheimer's disease and review experiments on animal models evaluating the physiological or behavioral effects of this intervention...
March 11, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28304293/coordinate-based-meta-analysis-of-the-default-mode-and-salience-network-for-target-identification-in-non-invasive-brain-stimulation-of-alzheimer-s-disease-and-behavioral-variant-frontotemporal-dementia-networks
#3
Michela Pievani, Lorenzo Pini, Clarissa Ferrari, Francesca B Pizzini, Ilaria Boscolo Galazzo, Chiara Cobelli, Maria Cotelli, Rosa Manenti, Giovanni B Frisoni
BACKGROUND: The accurate choice of the site of non-invasive brain stimulation (NIBS) is an important factor in trial design. OBJECTIVE: Based on the observation that Alzheimer's disease (AD) and behavioral frontotemporal dementia (bvFTD) affect specific large-scale networks, i.e., the default mode network (DMN) and the salience network (SN), respectively, we aimed to identify population-average coordinates of these networks that could be used as potential targets in NIBS trials aiming to modulate these circuits...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28175430/deep-brain-stimulation-of-the-fornix-engaging-therapeutic-circuits-and-networks-in-alzheimer-disease
#4
Nathan C Rowland, Francesco Sammartino, Jennifer C Tomaszczyk, Andres M Lozano
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/27983548/deep-brain-stimulation-for-alzheimer-s-disease-ethical-challenges-for-clinical-research
#5
Andrew M Siegel, Marna S Barrett, Mahendra T Bhati
Deep brain stimulation (DBS) is an invasive neuromodulation modality that has shown early promise as a novel treatment of Alzheimer's disease (AD). Further clinical research is warranted on the basis of positive results from animal and human studies, as well as the inadequacy of existing treatments in reducing the enormous medical and financial costs of untreated AD. Nevertheless, unique ethical challenges require particular attention to elements of subject enrollment and informed consent. Study protocols should specify robust assessment and regular monitoring of subject decision-making capacity to consent to trial participation...
December 9, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27920671/proceedings-of-the-fourth-annual-deep-brain-stimulation-think-tank-a-review-of-emerging-issues-and-technologies
#6
Wissam Deeb, James J Giordano, Peter J Rossi, Alon Y Mogilner, Aysegul Gunduz, Jack W Judy, Bryan T Klassen, Christopher R Butson, Craig Van Horne, Damiaan Deny, Darin D Dougherty, David Rowell, Greg A Gerhardt, Gwenn S Smith, Francisco A Ponce, Harrison C Walker, Helen M Bronte-Stewart, Helen S Mayberg, Howard J Chizeck, Jean-Philippe Langevin, Jens Volkmann, Jill L Ostrem, Jonathan B Shute, Joohi Jimenez-Shahed, Kelly D Foote, Aparna Wagle Shukla, Marvin A Rossi, Michael Oh, Michael Pourfar, Paul B Rosenberg, Peter A Silburn, Coralie de Hemptine, Philip A Starr, Timothy Denison, Umer Akbar, Warren M Grill, Michael S Okun
This paper provides an overview of current progress in the technological advances and the use of deep brain stimulation (DBS) to treat neurological and neuropsychiatric disorders, as presented by participants of the Fourth Annual DBS Think Tank, which was convened in March 2016 in conjunction with the Center for Movement Disorders and Neurorestoration at the University of Florida, Gainesveille FL, USA. The Think Tank discussions first focused on policy and advocacy in DBS research and clinical practice, formation of registries, and issues involving the use of DBS in the treatment of Tourette Syndrome...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27758681/deep-brain-stimulation-for-alzheimer-s-disease
#7
David S Xu, Francisco A Ponce
High-frequency deep brain stimulation (DBS) was introduced in the late 1980s for the treatment of movement disorders. This reversible, adjustable, and non-ablative therapy has been used to treat more than 100,000 people worldwide. The surgical procedure used to implant the DBS system, as well as the effects of chronic electrical stimulation, have been shown to be safe and effective through many clinical trials. Given the ability to therapeutically modulate the motor circuits of the brain in this manner, clinicians have considered using DBS for other neurodegenerative and neuropsychiatric disorders involving non-motor circuits, including appetite, mood, and cognition...
2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/27567879/brain-stimulation-in-alzheimer-s-disease
#8
Itzhak Fried
Deep brain stimulation has been successfully used in treatment of motor symptoms of Parkinson's disease and other movement disorders. In a recent multi-center prospectively randomized study, deep brain stimulation of the fornix was administered in order to ameliorate the cognitive symptoms and clinical course of Alzheimer's disease (AD). The study points to the possibility of modest slowing of the cognitive decline in AD in a subset of patients older than 65, while at the same time highlights the risk of stimulation in exacerbation of this decline in younger patients...
September 6, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27567810/a-phase-ii-study-of-fornix-deep-brain-stimulation-in-mild-alzheimer-s-disease
#9
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
#10
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/27536216/effects-of-long-term-environmental-enrichment-on-anxiety-memory-hippocampal-plasticity-and-overall-brain-gene-expression-in-c57bl6-mice
#11
Melanie Hüttenrauch, Gabriela Salinas, Oliver Wirths
There is ample evidence that physical activity exerts positive effects on a variety of brain functions by facilitating neuroprotective processes and influencing neuroplasticity. Accordingly, numerous studies have shown that continuous exercise can successfully diminish or prevent the pathology of neurodegenerative diseases such as Alzheimer's disease in transgenic mouse models. However, the long-term effect of physical activity on brain health of aging wild-type (WT) mice has not yet been studied in detail...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27399357/deep-brain-stimulation-targets-technology-and-trials-two-decades-of-progress
#12
Kim J Burchiel
AD, Alzheimer diseaseDBS, Deep brain stimulationFDA, Food and Drug AdministrationMER, Microelectrode recording.
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27399356/deep-brain-stimulation-of-the-fornix-engaging-therapeutic-circuits-and-networks-in-alzheimer-disease
#13
Nathan C Rowland, Francesco Sammartino, Jennifer C Tomaszczyk, Andres M Lozano
No abstract text is available yet for this article.
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27330836/linear-and-curvilinear-trajectories-of-cortical-loss-with-advancing-age-and-disease-duration-in-parkinson-s-disease
#14
Daniel O Claassen, David G Dobolyi, David A Isaacs, Olivia C Roman, Joshua Herb, Scott A Wylie, Joseph S Neimat, Manus J Donahue, Peter Hedera, David H Zald, Bennett A Landman, Aaron B Bowman, Benoit M Dawant, Swati Rane
Advancing age and disease duration both contribute to cortical thinning in Parkinson's disease (PD), but the pathological interactions between them are poorly described. This study aims to distinguish patterns of cortical decline determined by advancing age and disease duration in PD. A convenience cohort of 177 consecutive PD patients, identified at the Vanderbilt University Movement Disorders Clinic as part of a clinical evaluation for Deep Brain Stimulation (age: M= 62.0, SD 9.3), completed a standardized clinical assessment, along with structural brain Magnetic Resonance Imaging scan...
May 2016: Aging and Disease
https://www.readbyqxmd.com/read/27132526/neuromodulation-for-restoring-memory
#15
REVIEW
Sarah K B Bick, Emad N Eskandar
Disorders of learning and memory have a large social and economic impact in today's society. Unfortunately, existing medical treatments have shown limited clinical efficacy or potential for modification of the disease course. Deep brain stimulation is a successful treatment for movement disorders and has shown promise in a variety of other diseases including psychiatric disorders. The authors review the potential of neuromodulation for the treatment of disorders of learning and memory. They briefly discuss learning circuitry and its involvement in Alzheimer disease and traumatic brain injury...
May 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/26892497/transient-micro-needle-insertion-into-hippocampus-triggers-neurogenesis-and-decreases-amyloid-burden-in-a-mouse-model-of-alzheimer-s-disease
#16
Shijie Song, Xiaoyung Kong, Vasyl Sava, Chuanhai Cao, Sandra Acosta, Cesar Borlongan, Juan Sanchez-Ramos
Targeted micro-lesions of the hippocampus have been reported to enhance neurogenesis in the sub-granular zone (SGZ). The potential therapeutic impact of transient insertion of a micro-needle was investigated in a mouse model of Alzheimer's disease (AD). Here we tested the hypothesis that transient micro-injury to the brain elicits cellular responses that mediate beneficial regenerative processes. Brief stereotaxic insertion and removal of a micro-needle into the right hippocampus of 14 month old APP/PS1 mice brain resulted in a) stimulation of hippocampal neurogenesis and b) reduction of beta-amyloid plaque number in the CA-1 region...
February 18, 2016: Cell Transplantation
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/26701378/neurologist-ambulatory-care-health-care-utilization-and-costs-in-a-large-commercial-dataset
#18
John P Ney, Barbara Johnson, Tom Knabel, Karolina Craft, Joel Kaufman
OBJECTIVE: To determine the value of neurologist ambulatory care in chronic neurologic diseases in a large administrative claims dataset detailing costs, adverse events, and health care utilization. METHODS: The Optum proprietary claims dataset (2010-2012) was examined to describe direct health care costs, as well as specific outcome metrics for a large population of persons with chronic neurologic illnesses. In phase I of the study, we detail neurologist involvement and differences in annualized allowed third--party payments within episode treatment groups (ETGs) for 10 neurologic illnesses...
January 26, 2016: Neurology
https://www.readbyqxmd.com/read/26684775/bilateral-deep-brain-stimulation-of-the-fornix-for-alzheimer-s-disease-surgical-safety-in-the-advance-trial
#19
Francisco A Ponce, Wael F Asaad, Kelly D Foote, William S Anderson, G Rees Cosgrove, Gordon H Baltuch, Kara Beasley, Donald E Reymers, Esther S Oh, Steven D Targum, Gwenn S Smith, Constantine G Lyketsos, Andres M Lozano
OBJECT This report describes the stereotactic technique, hospitalization, and 90-day perioperative safety of bilateral deep brain stimulation (DBS) of the fornix in patients who underwent DBS for the treatment of mild, probable Alzheimer's disease (AD). METHODS The ADvance Trial is a multicenter, 12-month, double-blind, randomized, controlled feasibility study being conducted to evaluate the safety, efficacy, and tolerability of DBS of the fornix in patients with mild, probable AD. Intraoperative and perioperative data were collected prospectively...
July 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/26551238/neuroethical-implications-of-deep-brain-stimulation-in-degenerative-disorders
#20
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
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