Tai Chi For Reducing Dual-Task Gait Variability, A Potential Mediator Of Fall Risk In Parkinson's Disease: A Pilot Randomized Controlled Trial, Gloria Vergara-Diaz, Kamila Osypiuk, Jeffrey M. Hausdorff, Paolo Bonato, Brian J. Gow, Jose Gv. Miranda, Lewis R. Sudarsky, Daniel Tarsy, Michael D. Fox, Paula Gardiner, Cathi A. Thomas, Eric A. Macklin, Peter M. Wayne
Center for Integrated Primary Care Publications
Objectives: To assess the feasibility and inform design features of a fully powered randomized controlled trial (RCT) evaluating the effects of Tai Chi (TC) in Parkinson's disease (PD) and to select outcomes most responsive to TC assessed during off-medication states.
Design: Two-arm, wait-list controlled RCT.
Settings: Tertiary care hospital.
Subjects: Thirty-two subjects aged 40-75 diagnosed with idiopathic PD within 10 years.
Interventions: Six-month TC intervention added to usual care (UC) versus UC alone.
Outcome Measures: Primary outcomes were feasibility-related (recruitment rate, adherence, and compliance). Change in dual-task (DT) gait stride-time variability (STV) from baseline to 6 months was defined ...
High-Resolution Imaging Of Myeloperoxidase Activity Sensors In Human Cerebrovascular Disease, 2018 New York University School of Medicine
High-Resolution Imaging Of Myeloperoxidase Activity Sensors In Human Cerebrovascular Disease, Youssef Z. Wadghiri, Dung Minh. Hoang, Anita M. Leporati, Matthew J. Gounis, Aurora Rodriguez-Rodriguez, Mary L. Mazzanti, John P. Weaver, Ajay K. Wakhloo, Peter Caravan, Alexei A. Bogdanov Jr
Radiology Publications and Presentations
Progress in clinical development of magnetic resonance imaging (MRI) substrate-sensors of enzymatic activity has been slow partly due to the lack of human efficacy data. We report here a strategy that may serve as a shortcut from bench to bedside. We tested ultra high-resolution 7T MRI (microMRI) of human surgical histology sections in a 3-year IRB approved, HIPAA compliant study of surgically clipped brain aneurysms. microMRI was used for assessing the efficacy of MRI substrate-sensors that detect myeloperoxidase activity in inflammation. The efficacy of Gd-5HT-DOTAGA, a novel myeloperoxidase (MPO) imaging agent synthesized by using a highly stable gadolinium (III) chelate ...
Engineered Exosomes For Delivery Of Therapeutic Sirnas To Neurons, 2018 University of Massachusetts Medical School
Engineered Exosomes For Delivery Of Therapeutic Sirnas To Neurons, Reka A. Haraszti
GSBS Dissertations and Theses
Extracellular vesicles (EVs), exosomes and microvesicles, transfer endogenous RNAs between neurons over short and long distances. We have explored EVs for siRNA delivery to brain. (1) We optimized siRNA chemical modifications and siRNA conjugation to lipids for EV-mediated delivery. (2) We developed a GMP-compatible, scalable method to manufacture active EVs in bulk. (3) We characterized lipid and protein content of EVs in detail. (4) We established how protein and lipid composition relates to siRNA delivering activity of EVs, and we reverse engineered natural exosomes (small EVs) into artificial exosomes based on these data.
We established that cholesterol-conjugated siRNAs passively associate ...
Magneto-Electric Nano-Particles For Non-Invasive Brain Stimulation, 2018 Center for Nanomedicine, College of Engineering and Computing, Florida International University, Miami, Florida
Magneto-Electric Nano-Particles For Non-Invasive Brain Stimulation, Kun Yue, Rakesh Guduru, Jeongmin Hong, Ping Liang, Madhavan Nair, Sakhrat Khizroev
This paper for the first time discusses a computational study of using magneto-electric (ME) nanoparticles to artificially stimulate the neural activity deep in the brain. The new technology provides a unique way to couple electric signals in the neural network to the magnetic dipoles in the nanoparticles with the purpose to enable a non-invasive approach. Simulations of the effect of ME nanoparticles for non-invasively stimulating the brain of a patient with Parkinson’s Disease to bring the pulsed sequences of the electric field to the levels comparable to those of healthy people show that the optimized values for the concentration ...
Role Of The Dorsal Striatum In Learning And Decision Making, 2018 The University of Western Ontario
Role Of The Dorsal Striatum In Learning And Decision Making, Nole M. Hiebert
Electronic Thesis and Dissertation Repository
The striatum, the input region of the basal ganglia, has been shown to mediate many cognitive functions. The striatum itself can be functionally segregated into dorsal (DS) and ventral striatum (VS). For more than 60 years, DS has been reported to mediate stimulus-response learning, though evidence has been accruing pointing to a role in decision making. These literatures have been growing independently and an aim of this thesis was to bridge these two bodies of knowledge. We directly investigated the role of DS in stimulus-response learning versus decision making using functional magnetic resonance imaging (fMRI) in patients with Parkinson’s ...
Assistive Utensil: A Spork For Hand Tremors And Spatial Awareness, 2018 City University of New York (CUNY)
Assistive Utensil: A Spork For Hand Tremors And Spatial Awareness, Ana Font Hernandez, Jacob Kabariti, Troy Taylor
Publications and Research
In this poster, we present a 3D printed solution for hand tremors and special awareness. Our spork is an assistive device designed and 3D printed for patients suffering from scleroderma, systemic sclerosis, Parkinson's, multiple sclerosis, drug withdrawal, etc. The scale-based handle will act as a counterweight to offset the contents on the other end and reduce shakiness. The larger grip allows an easy and comfortable hold. The product will be 3D printed for a customizable fit and at an affordable price. Lastly, the product will include a haptic feedback sensor to assist the visually impaired in locating food contents ...
Amygdala Corticofugal Input Shapes Mitral Cell Responses In The Accessory Olfactory Bulb, 2018 George Washington University
Amygdala Corticofugal Input Shapes Mitral Cell Responses In The Accessory Olfactory Bulb, Livio Oboti, Eleonora Russo, Tuyen Tran, Daniel Durstewitz, Joshua G. Corbin
Pediatrics Faculty Publications
Interconnections between the olfactory bulb and the amygdala are a major pathway for triggering strong behavioral responses to a variety of odorants. However, while this broad mapping has been established, the patterns of amygdala feedback connectivity and the influence on olfactory circuitry remain unknown. Here, using a combination of neuronal tracing approaches, we dissect the connectivity of a cortical amygdala [posteromedial cortical nucleus (PmCo)] feedback circuit innervating the mouse accessory olfactory bulb. Optogenetic activation of PmCo feedback mainly results in feedforward mitral cell (MC) inhibition through direct excitation of GABAergic granule cells. In addition, LED-driven activity of corticofugal afferents increases ...
Spinal Cord Trauma: An Overview Of Normal Structure And Function, Primary And Secondary Mechanisms Of Injury, And Emerging Treatment Modalities, Daniel Morin
Senior Honors Theses
The structures of the spinal cord and vertebral column are designed to provide flexibility, while still providing ample protection for the spinal cord deep within. While it does offer remarkable protection against most routine trauma, the spinal cord is still vulnerable to high-force etiologies of trauma and may become damaged as a result. These events are referred to as primary injury. Following the initial injury, the body’s own physiological responses cause a cascade of deleterious effects, known as secondary injury. Secondary injury is a major therapeutic target in mitigating the effects of spinal cord injury (SCI), and much research ...
Identification Of Epigenetic Regulators Of Dux4-Fl For Targeted Therapy Of Facioscapulohumeral Muscular Dystrophy, 2018 University of Massachusetts Medical School
Identification Of Epigenetic Regulators Of Dux4-Fl For Targeted Therapy Of Facioscapulohumeral Muscular Dystrophy, Charis L. Himeda, Takako I. Jones, Ching-Man A. Virbasius, Lihua Julie Zhu, Michael R. Green, Peter L. Jones
Open Access Articles
Facioscapulohumeral muscular dystrophy (FSHD) is caused by epigenetic de-repression of the disease locus, leading to pathogenic misexpression of the DUX4 gene in skeletal muscle. While the factors and pathways involved in normal repression of the FSHD locus in healthy cells have been well characterized, very little is known about those responsible for the aberrant activation of DUX4-fl in FSHD myocytes. Reasoning that DUX4-fl activators might represent useful targets for small molecule inhibition, we performed a highly targeted, candidate-based screen of epigenetic regulators in primary FSHD myocytes. We confirmed several of the strongest and most specific candidates (ASH1L, BRD2, KDM4C, and ...
Bilateral Facial Spasm Following Guillain-Barré Syndrome, 2018 University of Kentucky
Bilateral Facial Spasm Following Guillain-Barré Syndrome, Zain Guduru, John Morgan, Kapil Sethi
Neurology Faculty Publications
Background: We report a patient who developed lower facial muscle spasm at rest and bilateral facial synkinesis several months after treatment of Guillain–Barré syndrome (GBS); this finding, to our knowledge, is hitherto unreported.
Phenomenology Shown: Bilateral synkinesis, facial muscles spasm at rest, bilateral postparalytic facial syndrome.
Educational Value: Aberrant regeneration of nerve fibers post GBS, resulting in facial muscles spasm at rest, bilateral synkinesis.
Ethical Dilemma Of Alzheimer's Disease And Informed Consent, 2018 Augustana College, Rock Island Illinois
Ethical Dilemma Of Alzheimer's Disease And Informed Consent, Daenia La Rodé
Augustana Center for the Study of Ethics Essay Contest
No abstract provided.
Haplotype Analysis Of Apoe Intragenic Snps, 2018 Novosibirsk State University
Haplotype Analysis Of Apoe Intragenic Snps, Vladimir N. Babenko, Dmitry A. Afonnikov, Elena V. Ignatieva, Anton V. Klimov, Fedor E. Gusev, Evgeny I. Rogaev
Open Access Articles
BACKGROUND: APOE epsilon4 allele is most common genetic risk factor for Alzheimer's disease (AD) and cognitive decline. However, it remains poorly understood why only some carriers of APOE epsilon4 develop AD and how ethnic variabilities in APOE locus contribute to AD risk. Here, to address the role of APOE haplotypes, we reassessed the diversity of APOE locus in major ethnic groups and in Alzheimer's Disease Neuroimaging Initiative (ADNI) dataset on patients with AD, and subjects with mild cognitive impairment (MCI), and control non-demented individuals.
RESULTS: We performed APOE gene haplotype analysis for a short block of five SNPs ...
Motor Subtypes Of Parkinson’S Disease Can Be Identified By Frequency Component Of Postural Stability, 2018 Arizona State University
Motor Subtypes Of Parkinson’S Disease Can Be Identified By Frequency Component Of Postural Stability, Saba Rezvanian, Thurmon Lockhart, Christopher Frames, Rahul Soangra, Abraham Lieberman
Physical Therapy Faculty Articles and Research
Parkinson’s disease (PD) can be divided into two subtypes based on clinical features—namely tremor dominant (TD) and postural instability and gait difficulty (PIGD). This categorization is important at the early stage of PD, since identifying the subtypes can help to predict the clinical progression of the disease. Accordingly, correctly diagnosing subtypes is critical in initiating appropriate early interventions and tracking the progression of the disease. However, as the disease progresses, it becomes increasingly difficult to further distinguish those attributes that are relevant to the subtypes. In this study, we investigated whether a method using the standing center of ...
Evaluation Of Group Movement Programs (Plié And Paired Plié) For People With Memory Loss, Alzheimer’S Disease Or Dementia, 2018 George Washington University
Evaluation Of Group Movement Programs (Plié And Paired Plié) For People With Memory Loss, Alzheimer’S Disease Or Dementia, Martin Blanco, Deborah Barnes
GW Research Days 2016 - Present
Today, one in ten people ages 65 and older have Alzheimer’s dementia. This serious condition often causes great suffering among affected individuals and their families, and there are no medications that stop or slow the disease. It is therefore important to evaluate alternative interventions that may benefit both patients and their care partners. Preventing Loss of Independence through Exercise (PLIÉ) and Paired PLIÉ are group movement programs that combine neuroscience and integrative medicine for individuals with dementia. We analyzed data from [N=39] anonymous evaluation surveys performed as part of two ongoing randomized control trials. Survey data included general ...
Comparison Of Existing Methods For Algorithmic Classification Of Dementia In The Health And Retirement Study, 2018 George Washington University
Comparison Of Existing Methods For Algorithmic Classification Of Dementia In The Health And Retirement Study, Kan Z. Gianattasio, Qiong Wu, M Maria Glymour, Melinda C. Power
GW Research Days 2016 - Present
Background: Dementia ascertainment is difficult and costly, hindering the use of large, representative studies such as the Health and Retirement Study (HRS) to monitor trends or disparities in dementia. To address this issue, multiple groups of researchers have developed algorithms to classify dementia status in HRS participants using data from HRS and the Aging, Demographics, and Memory Study (ADAMS), an HRS sub-study that systematically ascertained dementia status. However, the relative performance of each algorithm has not been systematically evaluated.
Objective: To compare the performance of five existing algorithms, overall and by sociodemographic subgroups.
Methods: We created two standardized datasets: (a ...
Vascular Neurocognitive Disorders And The Vascular Risk Factors, 2018 Craiova University of Medicine and Pharmacy, Department of Neurology
Vascular Neurocognitive Disorders And The Vascular Risk Factors, Carmen V. Albu, Vlad Padureanu, Mihail V. Boldeanu, Ana M. Bumbea, Anca S. Enescu, Dana M. Albulescu, Cristian A. Silosi, Aurelia Enescu
Journal of Mind and Medical Sciences
Dementias are clinical neurodegenerative diseases characterized by permanent and progressive transformation of cognitive functions such as memory, learning capacity, attention, thinking, language, passing judgments, calculation or orientation. Dementias represent a relatively frequent pathology, encountered at about 10% of the population of 65-year olds and 20% of the population of 80-year olds.
This review presents the main etiological forms of dementia, which include Alzheimer form of dementia, vascular dementia, dementia associated with alpha-synucleionopathies, and mixed forms. Regarding vascular dementia, the risk factors are similar to those for an ischemic or hemorrhagic cerebrovascular accident: arterial hypertension, diabetes mellitus, dyslipidemia, smoking, obesity, age ...
Variant Intestinal-Cell Kinase In Juvenile Myoclonic Epilepsy, 2018 Veterans Affairs Greater Los Angeles Healthcare System
Variant Intestinal-Cell Kinase In Juvenile Myoclonic Epilepsy, J. N. Bailey, L. De Nijs, D. Bai, T. Suzuki, H. Miyamoto, M. Tanaka, C. Patterson, Y.-C. Lin, M. T. Medina, M. E. Alonso, J. M. Serratosa, R. M. Durón, Viet-Hong Nguyen, J. E. Wight, I. E. Martínez‑Juárez, A. Ochoa, A. Jara-Prado, L. Guilhoto, Y. Molina, E. M. Yacubian, M. López‑Ruiz, Y. Inoue, S. Kaneko, S. Hirose, M. Osawa, H. Oguni, S. Fujimoto, T. M. Grisar, J. M. Stern, K. Yamakawa, B. Lakaye, A. V. Delgado-Escueta
Pharmacy Faculty Articles and Research
In juvenile myoclonic epilepsy, data are limited on the genetic basis of networks promoting convulsions with diffuse polyspikes on electroencephalography (EEG) and the subtle microscopic brain dysplasia called microdysgenesis.
Using Sanger sequencing, we sequenced the exomes of six members of a large family affected with juvenile myoclonic epilepsy and confirmed cosegregation in all 37 family members. We screened an additional 310 patients with this disorder for variants on DNA melting-curve analysis and targeted real-time DNA sequencing of the gene encoding intestinal-cell kinase (ICK). We calculated Bayesian logarithm of the odds (LOD) scores for cosegregating variants, odds ratios in ...
Biomarkers Of Rehabilitation Therapy Vary According To Stroke Severity, 2018 University of California, Irvine
Biomarkers Of Rehabilitation Therapy Vary According To Stroke Severity, Erin Burke Quinlan, Lucy Dodakian, Jill See, Alison Mckenzie, Jill Campbell Stewart, Steven C. Cramer
Physical Therapy Faculty Articles and Research
Biomarkers that capture treatment effects could improve the precision of clinical decision making for restorative therapies. We examined the performance of candidate structural, functional,and angiogenesis-related MRI biomarkers before and after a 3-week course of standardized robotic therapy in 18 patients with chronic stroke and hypothesized that results vary significantly according to stroke severity. Patients were 4.1 ± 1 months poststroke, with baseline arm Fugl-Meyer scores of 20–60. When all patients were examined together, no imaging measure changed over time in a manner that correlated with treatment-induced motor gains. However, when also considering the interaction with baseline motor status ...
Characterization Of The Roles Of Muscle-Synthesized Brain-Derived Neurotrophic Factor And Presynaptic Tyrosine Receptor Kinase B In Motor Neuron Axonal Transport, Luke A. Vanosdol
All NMU Master's Theses
Brain-derived neurotrophic factor (BDNF) is a small, diffusible protein essential for the development and function of neurons. It is synthesized by many types of tissue, including muscle. BDNF actions are mediated via binding to its receptor, tyrosine receptor kinase B (TrkB). The BDNF-TrkB complex is endocytosed into a specialized vesicle, which induces downstream signaling cascades locally in the dendrites, or, more often, is delivered to the cell soma via retrograde axonal transport, where it modulates gene expression. BDNF activation of TrkB is critical for the initiation of axonal transport, and this cellular process relies on the interaction of numerous adaptor ...
Cerebral Organoids Derived From Sandhoff Disease-Induced Pluripotent Stem Cells Exhibit Impaired Neurodifferentiation, 2018 National Institutes of Health
Cerebral Organoids Derived From Sandhoff Disease-Induced Pluripotent Stem Cells Exhibit Impaired Neurodifferentiation, Maria L. Allende, Emily K. Cook, Bridget C. Larman, Adrienne Nugent, Jacqueline M. Brady, Diane Golebiowski, Miguel Sena-Esteves, Cynthia J. Tifft, Richard L. Proia
Open Access Articles
Sandhoff disease, one of the GM2 gangliosidoses, is a lysosomal storage disorder characterized by the absence of beta-hexosaminidase A and B activity and the concomitant lysosomal accumulation of its substrate, GM2 ganglioside. It features catastrophic neurodegeneration and death in early childhood. How the lysosomal accumulation of ganglioside might affect the early development of the nervous system is not understood. Recently, cerebral organoids derived from induced pluripotent stem (iPS) cells have illuminated early developmental events altered by disease processes. To develop an early neurodevelopmental model of Sandhoff disease, we first generated iPS cells from the fibroblasts of an infantile Sandhoff disease ...