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https://www.readbyqxmd.com/read/28343366/motor-learning-in-animal-models-of-parkinson-s-disease-aberrant-synaptic-plasticity-in-the-motor-cortex
#1
REVIEW
Tonghui Xu, Shaofang Wang, Rupa R Lalchandani, Jun B Ding
In Parkinson's disease (PD), dopamine depletion causes major changes in the brain, resulting in the typical cardinal motor features of the disease. PD neuropathology has been restricted to postmortem examinations, which are limited to only a single time of PD progression. Models of PD in which dopamine tone in the brain is chemically or physically disrupted are valuable tools in understanding the mechanisms of the disease. The basal ganglia have been well studied in the context of PD, and circuit changes in response to dopamine loss have been linked to the motor dysfunctions in PD...
March 25, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28343166/development-and-validation-of-a-yoga-module-for-parkinson-disease
#2
Noopur Kakde, Kashinath G Metri, Shivarama Varambally, Raghuram Nagaratna, H R Nagendra
Background Parkinson's disease (PD), a progressive neurodegenerative disease, affects motor and nonmotor functions, leading to severe debility and poor quality of life. Studies have reported the beneficial role of yoga in alleviating the symptoms of PD; however, a validated yoga module for PD is unavailable. This study developed and validated an integrated yoga module(IYM) for PD. Methods The IYM was prepared after a thorough review of classical yoga texts and previous findings. Twenty experienced yoga experts, who fulfilled the inclusion criteria, were selected validating the content of the IYM...
March 25, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28343095/ion-mobility-mass-spectrometry-and-orthogonal-gas-phase-techniques-to-study-amyloid-formation-and-inhibition
#3
REVIEW
Waldemar Hoffmann, Gert von Helden, Kevin Pagel
Amyloidogenic peptide oligomers are responsible for a variety of neurodegenerative disorders such as Alzheimer's and Parkinson's disease. Due to their dynamic, polydisperse, and polymorphic nature, these oligomers are very challenging to characterize using traditional condensed-phase methods. In the last decade, ion mobility-mass spectrometry (IM-MS) and related gas-phase techniques have emerged as a powerful alternative to disentangle the structure and assembly characteristics of amyloid forming systems. This review highlights recent advances in which IM-MS was used to characterize amyloid oligomers and their underlying assembly pathway...
March 23, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28342967/the-effects-of-omega-3-fatty-acids-and-vitamin-e-co-supplementation-on-clinical-and-metabolic-status-in-patients-with-parkinson-s-disease-a-randomized-double-blind-placebo-controlled-trial
#4
Mohsen Taghizadeh, Omid Reza Tamtaji, Ehsan Dadgostar, Reza Daneshvar Kakhaki, Fereshteh Bahmani, Javad Abolhassani, Mohammad Hossein Aarabi, Ebrahim Kouchaki, Mohammad Reza Memarzadeh, Zatollah Asemi
The current research was performed to evaluate the effects of omega-3 fatty acids and vitamin E co-supplementation on clinical signs and metabolic status in people with Parkinson's disease (PD). This randomized double-blind placebo-controlled clinical trial was conducted in 60 patients with PD. Participants were randomly assigned into two groups to receive either 1000 mg omega-3 fatty acids from flaxseed oil plus 400 IU vitamin E supplements (n = 30) or placebo (n = 30) for 12 weeks. Unified Parkinson's disease rating stage (UPDRS) were recorded at baseline and the after 3-month intervention...
March 22, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28342757/role-of-enzymatic-free-radical-scavengers-in-management-of-oxidative-stress-and-autoimmune-disorders
#5
REVIEW
Shikha Srivastava, Deependra Singh, Satish Patel, Manju R Singh
Autoimmune disorders are distinct with over production and accumulation of free radicals due to its undisclosed genesis. The cause of numerous disorders as cancer, arthritis, psoriasis, diabetes, alzheimer's, cardiovascular disease, Parkinson's, respiratory distress syndrome, colitis, crohn's, pulmonary fibrosis, obesity and ageing have been associated with immune dysfunction and oxidative stress. In an oxidative stress, reactive oxygen species generally provoke the series of oxidation at cellular level. The buildup of free radicals in turn triggers various inflammatory cells causing release of various inflammatory interleukins, cytokines, chemokines, and tumor necrosis factors which mediate signal transduction and transcription pathways as nuclear factor- kappa B (NF-κB), signal transducer and activator of transcription 3 (STAT3), hypoxia-inducible factor-1 (HIF-1α) and nuclear factor-erythroid 2-related factor (Nrf2)...
March 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28342749/characterizing-the-differential-roles-of-striatal-5-ht1a-auto-and-hetero-receptors-in-the-reduction-of-l-dopa-induced-dyskinesia
#6
Samantha M Meadows, Nicole Chambers, Melissa M Conti, Sharon C Bossert, Crystal Tasber, Eitan Sheena, Mark Varney, Adrian Newman-Tancredi, Christopher Bishop
l-DOPA remains the benchmark treatment for Parkinson's disease (PD) motor symptoms, but chronic use leads to l-DOPA-induced dyskinesia (LID). The serotonin (5-HT) system has been established as a key modulator of LID and 5-HT1A receptors (5-HT1AR) stimulation has been shown to convey anti-dyskinetic effects. However, 5-HT1AR agonists often compromise clinical efficacy or display intrinsic side effects and their site(s) of actions remain debatable. Recently, highly selective G-protein biased 5-HT1AR agonists, F13714 and F15599, were shown to potently target 5-HT1A auto- or hetero-receptors, respectively...
March 22, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28342747/subthalamic-nucleus-beta-and-gamma-activity-is-modulated-depending-on-the-level-of-imagined-grip-force
#7
Petra Fischer, Alek Pogosyan, Binith Cheeran, Alexander L Green, Tipu Z Aziz, Jonathan Hyam, Simon Little, Thomas Foltynie, Patricia Limousin, Ludvic Zrinzo, Marwan Hariz, Michael Samuel, Keyoumars Ashkan, Peter Brown, Huiling Tan
Motor imagery involves cortical networks similar to those activated by real movements, but the extent to which the basal ganglia are recruited is not yet clear. Gamma and beta oscillations in the subthalamic nucleus (STN) vary with the effort of sustained muscle activity. We recorded local field potentials in Parkinson's disease patients and investigated if similar changes can be observed during imagined gripping at three different 'forces'. We found that beta activity decreased significantly only for imagined grips at the two stronger force levels...
March 22, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28342682/a-home-program-of-strength-training-movement-strategy-training-and-education-did-not-prevent-falls-in-people-with-parkinson-s-disease-a-randomised-trial
#8
Meg E Morris, Nicholas F Taylor, Jennifer Watts, Andrew Evans, Malcolm Horne, Peter Kempster, Mary Danoudis, Jennifer J McGinley, Clarissa Martin, Hylton B Menz
QUESTIONS: For people with idiopathic Parkinson's disease, does a 6-week, comprehensive, home exercise program reduce falls and disability and improve health-related quality of life? Is the program cost-effective? DESIGN: Randomised, controlled trial with concealed allocation and assessor blinding. PARTICIPANTS: One hundred and thirty-three community-dwelling adults with Parkinson's disease. INTERVENTION: The experimental group completed a 6-week home program comprising progressive resistance strength training, movement strategy training and falls education...
March 14, 2017: Journal of Physiotherapy
https://www.readbyqxmd.com/read/28342306/rotigotine-may-control-drooling-in-patients-with-parkinson-s-disease-preliminary-findings
#9
Tommaso Schirinzi, Paola Imbriani, Alessio D'Elia, Giulia Di Lazzaro, Nicola Biagio Mercuri, Antonio Pisani
OBJECTIVE: To evaluate the efficacy of rotigotine in controlling the drooling of Parkinson's Disease (PD) patients. PATIENTS AND METHODS: We assessed 7 PD patients (Hoehn and Yahr scale >2.5) with three different clinical scores (Drooling Severity and Frequency Scale - DSFS, Drooling Rating Scale - DRS and Sialorrhea Clinical Scale for PD - SCS) before and after 4 weeks of therapy. Statistical differences were analyzed with Wilcoxon signed-rank test. RESULTS: We observed that rotigotine significantly improves drooling as measured by the lowering of the three scores (p<0...
March 18, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28339422/diffusion-kurtosis-imaging-for-diagnosis-of-parkinson-s-disease-a-novel-software-tool-proposal
#10
Cruz Gloria, Sheng Dong Nie
In order to diagnose Parkinson disease (PD) at an early stage, it is important to develop a sensitive method for detecting structural changes in the substantia nigra (SN). Diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) have become important tools in supporting diagnosis of PD, with findings based on increased apparent diffusion coefficients (ADCs) in basal ganglia and decreased fractional anisotropy (FA) in SN. Based on the hypothesis that a diffusion kurtosis imaging (DKI) theory is a valuable method for PD diagnosis based on the non-Gaussian diffusion of water in biologic systems, the purpose of this study is to develop an image processing scheme (software) based on Image-J for the facilitating the application of DKI to assist PD diagnosis...
March 21, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28339403/dopamine-transporter-imaging-has-no-impact-on-functional-outcomes-in-de-novo-probable-parkinson-s-disease
#11
Patrick T Hickey, Maragatha Kuchibhatla, Burton Scott, Lisa Gauger, Mark A Stacy
BACKGROUND: Parkinson's disease (PD) is among the most prevalent neurodegenerative conditions. While motor and non-motor aspects of this disease have been well characterized, no objective biomarker exists to support an accurate clinical diagnosis. However, newer imaging techniques, including [123I]-FP-CIT (DaTSCAN), have demonstrated utility in differentiating between PD and non-neurodegenerative tremor disorders. OBJECTIVE: DaTSCAN has been primarily investigated in situations where diagnostic confusion exists, and in these instances has been shown to significantly impact clinical management...
March 20, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28339400/a-systematic-review-of-the-huntington-disease-like-2-phenotype
#12
David G Anderson, Ruth H Walker, Myles Connor, Jonathan Carr, Russell L Margolis, Amanda Krause
BACKGROUND: Huntington Disease-like 2 (HDL2) is a neurodegenerative disorder similar to Huntington Disease (HD) in its clinical phenotype, genetic characteristics, neuropathology and longitudinal progression. Proposed specific differences include an exclusive African ancestry, lack of eye movement abnormalities, increased Parkinsonism, and acanthocytes in HDL2. OBJECTIVE: The objective was to determine the similarities and differences between HD and HDL2 by establishing the clinical phenotype of HDL2 with the published cases...
March 21, 2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28339068/iron-and-parkinson-s-disease-a-systematic-review-and-meta-analysis
#13
Giovanni Mostile, Calogero Edoardo Cicero, Loretta Giuliano, Mario Zappia, Alessandra Nicoletti
A possible association between iron serum levels and Parkinson's disease (PD) using a meta‑analytic approach was evaluated. A systematic MEDLINE search was conducted to identify published observational, case‑control studies dealing with the association between iron blood levels and PD. In both groups, iron blood levels were extracted as means and standard deviations to calculate the standardized mean differences (SMDs) with 95% confidence intervals (CIs). Heterogeneity of selected studies was investigated...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338925/tobacco-use-oral-health-and-risk-of-parkinson-s-disease
#14
Zhiwei Liu, Ann Roosaar, Tony Axéll, Weimin Ye
Few studies have investigated the associations between use of Swedish moist snuff (snus), associated poor oral health, and risk of Parkinson's disease (PD). We followed 20,175 participants who were free of PD in 1973-1974 in Uppsala, Sweden, until the end of 2012. We used Cox proportional hazards regression models to estimate hazard ratios and corresponding 95% confidence intervals for the associations between tobacco use, oral health indicators, and PD risk. We found that tobacco use was associated with a lower risk of PD in males...
March 9, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28338380/the-association-between-physical-activity-with-cognitive-function-and-brain-derived-neurotrophic-factor-in-people-with-parkinson-s-disease-a-pilot-study
#15
Hanan Khalil, Mahmoud A Alomari, Omar Khabour, Aya Al-Hieshan, Jawad A Bajwa
OBJECTIVE: To examine the effect of physical capacity, on the relationship of Brain-Derived Neurotrophic Factor (BDNF) with cognitive function in people with PD. METHODS: Serum BDNF levels were measured in 29 PD participants and 30 healthy controls. Cognitive function was assessed using the Montreal Cognitive Assessment (MOCA) scale. Physical capacity was evaluated using the six minute walk distance (6-MWD). Participants were categorized into low or high physical capacity group according to their 50(th) percentile 6-MWD...
March 24, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28338241/neuroprotective-effects-of-loganin-on-mptp-induced-parkinson-s-disease-mice-neurochemistry-glial-reaction-and-autophagy-studies
#16
Yi-Da Xu, Chun Cui, Meng-Fei Sun, Ying-Li Zhu, Min Chu, Yun-Wei Shi, Stanley Li Lin, Xu-Sheng Yang, Yan-Qin Shen
Parkinson's disease (PD) is a progressive neurodegenerative disease, involving resting tremor and bradykinesia, for which no recognized therapies or drugs are available to halt or slow progression. In recent years, natural botanic products have been considered relatively safe, with limited side effects, and are expected to become an important source for clinical mediation of PD in the future. Our study focuses on the ability of loganin, a compound derived from fruits of cornus, to mediate neuroprotection in a mouse model of PD...
March 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28338076/movement-disorders-comparison-of-cognitive-impairment-in-parkinson-disease-and-essential-tremor
#17
Ian Fyfe
No abstract text is available yet for this article.
March 24, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28337696/cerebral-dopamine-neurotrophic-factor-a-potential-therapeutic-agent-for-parkinson-s-disease
#18
REVIEW
Tingting Tang, Yong Li, Qian Jiao, Xixun Du, Hong Jiang
The application of neurotrophic factors (NTFs) is a promising therapeutic strategy for neurodegenerative disorders such as Parkinson's disease (PD). Many NTFs have been reported to enhance the survival, regeneration, and differentiation of neurons and to induce synaptic plasticity. However, because of their potential side-effects and low efficacy after clinical administration, more potent treatments for neurodegenerative disorders are being sought. Cerebral dopamine neurotrophic factor (CDNF), a newly-identified NTF homologous to mesencephalic astrocyte-derived NTF, is structurally and functionally different from other NTFs, providing new hope especially for PD patients...
March 23, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28337659/a20-in-multiple-sclerosis-and-parkinson-s-disease-clue-to-a-common-dysregulation-of-anti-inflammatory-pathways
#19
Simona Perga, Serena Martire, Francesca Montarolo, Nicole D Navone, Andrea Calvo, Giuseppe Fuda, Alberto Marchet, Daniela Leotta, Adriano Chiò, Antonio Bertolotto
Chronic inflammation significantly contributes to the pathogenesis of several neurodegenerative disorders. In physiological conditions, a chronic inflammatory state is prevented through the termination of the acute inflammatory response once the triggering insult is eliminated. Several mechanisms regulate the resolution of inflammation. Among these, a potent inhibitor of the pro-inflammatory NF-kB signaling known as A20 has emerged as a key player. Recent studies have shown reduced blood levels of A20 in the patients of diverse chronic inflammatory diseases...
March 23, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28337542/%C3%AE-synuclein-binds-to-the-er-mitochondria-tethering-protein-vapb-to-disrupt-ca-2-homeostasis-and-mitochondrial-atp-production
#20
Sébastien Paillusson, Patricia Gomez-Suaga, Radu Stoica, Daniel Little, Paul Gissen, Michael J Devine, Wendy Noble, Diane P Hanger, Christopher C J Miller
α-Synuclein is strongly linked to Parkinson's disease but the molecular targets for its toxicity are not fully clear. However, many neuronal functions damaged in Parkinson's disease are regulated by signalling between the endoplasmic reticulum (ER) and mitochondria. This signalling involves close physical associations between the two organelles that are mediated by binding of the integral ER protein vesicle-associated membrane protein-associated protein B (VAPB) to the outer mitochondrial membrane protein, protein tyrosine phosphatase-interacting protein 51 (PTPIP51)...
March 23, 2017: Acta Neuropathologica
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