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Parkinson's Disease

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https://www.readbyqxmd.com/read/28913005/chaperone-based-therapies-for-disease-modification-in-parkinson-s-disease
#1
REVIEW
Erik L Friesen, Mitch L De Snoo, Luckshi Rajendran, Lorraine V Kalia, Suneil K Kalia
Parkinson's disease (PD) is the second most common neurodegenerative disorder and is characterized by the presence of pathological intracellular aggregates primarily composed of misfolded α-synuclein. This pathology implicates the molecular machinery responsible for maintaining protein homeostasis (proteostasis), including molecular chaperones, in the pathobiology of the disease. There is mounting evidence from preclinical and clinical studies that various molecular chaperones are downregulated, sequestered, depleted, or dysfunctional in PD...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28894620/programming-for-stimulation-induced-transient-nonmotor-psychiatric-symptoms-after-bilateral-subthalamic-nucleus-deep-brain-stimulation-for-parkinson-s-disease
#2
Xi Wu, Yiqing Qiu, Keith Simfukwe, Jiali Wang, Jianchun Chen, Xiaowu Hu
BACKGROUND: Stimulation-induced transient nonmotor psychiatric symptoms (STPSs) are side effects following bilateral subthalamic nucleus deep brain stimulation (STN-DBS) in Parkinson's disease (PD) patients. We designed algorithms which (1) determine the electrode contacts that induce STPSs and (2) provide a programming protocol to eliminate STPS and maintain the optimal motor functions. Our objective is to test the effectiveness of these algorithms. MATERIALS AND METHODS: 454 PD patients who underwent programming sessions after STN-DBS implantations were retrospectively analyzed...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28884038/differential-diagnosis-of-parkinson-disease-essential-tremor-and-enhanced-physiological-tremor-with-the-tremor-analysis-of-emg
#3
Jie Zhang, Yan Xing, Xiuli Ma, Liqun Feng
We investigate the differential diagnostic value of tremor analysis of EMG on Parkinson's disease (PD), essential tremor (ET), and enhanced physiological tremor (EPT). Clinical data from 25 patients with PD, 20 patients with ET, and 20 patients with EPT were collected. The tremor frequency and muscle contraction pattern of the resting, posture, and 500 g and 1000 g overload were recorded. The frequency of PD tremor was 4-6 Hz, and the frequency of ET was also in this range; the frequency of EPT is 6-12 hz having some overlap with PD...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28852579/predictors-of-functional-and-quality-of-life-outcomes-following-deep-brain-stimulation-surgery-in-parkinson-s-disease-patients-disease-patient-and-surgical-factors
#4
Hesham Abboud, Gencer Genc, Nicolas R Thompson, Srivadee Oravivattanakul, Faisal Alsallom, Dennys Reyes, Kathy Wilson, Russell Cerejo, Xin Xin Yu, Darlene Floden, Anwar Ahmed, Michal Gostkowski, Ayman Ezzeldin, Hazem Marouf, Ossama Y Mansour, Andre Machado, Hubert H Fernandez
OBJECTIVE: The primary objective was to evaluate predictors of quality of life (QOL) and functional outcomes following deep brain stimulation (DBS) in Parkinson's disease (PD) patients. The secondary objective was to identify predictors of global improvement. METHODS: PD patients who underwent DBS at our Center from 2006 to 2011 were evaluated by chart review and email/phone survey. Postoperative UPDRS II and EQ-5D were analyzed using simple linear regression adjusting for preoperative score...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28848685/bridging-the-gaps-in-patient-education-for-dbs-surgery-in-parkinson-s-disease
#5
Colleen D Knoop, Robert Kadish, Kathy Hager, Michael C Park, Paul D Loprinzi, Kathrin LaFaver
INTRODUCTION: Improvements in quality of life, tremor, and other motor features have been recognized as superior in patients with advanced Parkinson's disease (PD) treated with deep brain stimulation (DBS) surgery versus best medical therapy. We studied a group of patients with PD after undergoing DBS surgery in regard to expectations and satisfaction with DBS outcomes to determine gaps in patient education. METHODS: This study was a retrospective, single academic center chart review and outcome questionnaire sent to patients with PD who had undergone DBS surgery between 2007 and 2014...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28831326/dynamic-changes-in-the-nigrostriatal-pathway-in-the-mptp-mouse-model-of-parkinson-s-disease
#6
REVIEW
Dongping Huang, Jing Xu, Jinghui Wang, Jiabin Tong, Xiaochen Bai, Heng Li, Zishan Wang, Yulu Huang, Yufei Wu, Mei Yu, Fang Huang
The characteristic brain pathology and motor and nonmotor symptoms of Parkinson's disease (PD) are well established. However, the details regarding the causes of the disease and its course are much less clear. Animal models have significantly enriched our current understanding of the progression of this disease. Among various neurotoxin-based models of PD, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model is the most commonly studied model. Here, we provide an overview of the dynamic changes in the nigrostriatal pathway in the MPTP mouse model of PD...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28819579/dual-task-performance-in-gba-parkinson-s-disease
#7
Karin Srulijes, Kathrin Brockmann, Senait Ogbamicael, Markus A Hobert, Ann-Kathrin Hauser, Claudia Schulte, Jasmin Fritzen, Michael Schwenk, Thomas Gasser, Daniela Berg, Walter Maetzler
INTRODUCTION: Parkinson's disease patients carrying a heterozygous mutation in the gene glucocerebrosidase (GBA-PD) show faster motor and cognitive decline than idiopathic Parkinson's disease (iPD) patients, but the mechanisms behind this observation are not well understood. Successful dual tasking (DT) requires a smooth integration of motor and nonmotor operations. This study compared the DT performances between GBA-PD and iPD patients. METHODS: Eleven GBA-PD patients (p...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28811955/the-effects-of-group-based-versus-individual-based-tai-chi-training-on-nonmotor-symptoms-in-patients-with-mild-to-moderate-parkinson-s-disease-a-randomized-controlled-pilot-trial
#8
Jing Hui Yang, Ya Qun Wang, Sai Qing Ye, You Gen Cheng, Yu Chen, Xiao Zhen Feng
OBJECTIVE: To compare the effects of group-based and individual-based Tai Chi training on nonmotor symptoms in patients with mild to moderate Parkinson's disease. DESIGN: Randomized controlled pilot study. METHODS: 36 community-dwelling patients with Parkinson's disease (PD) were randomly assigned to either group-based training group (n = 19) or individual-based group (n = 17). Both groups received same content of Tai Chi training 3 times a week for 13 weeks...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28798882/evolution-of-orofacial-symptoms-and-disease-progression-in-idiopathic-parkinson-s-disease-longitudinal-data-from-the-j%C3%A3-nk%C3%A3-ping-parkinson-registry
#9
Seyed-Mohammad Fereshtehnejad, Örjan Skogar, Johan Lökk
BACKGROUND: Orofacial symptoms are common in Parkinson's disease (PD) both as initial manifestations and late markers of disease complications. We aimed to investigate the evolution of orofacial manifestations and their prognostic value throughout PD progression. METHODS: Data was obtained from "Jönköping Parkinson Registry" database on routine care visits of 314 people with idiopathic PD in southern Sweden. Information on baseline symptomatology, orofacial features, UPDRS, and medications was recorded at baseline and during each follow-up visit within an average of 4...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28781905/genetic-variants-in-snca-and-the-risk-of-sporadic-parkinson-s-disease-and-clinical-outcomes-a-review
#10
REVIEW
Clarissa Loureiro das Chagas Campêlo, Regina Helena Silva
There is increasing evidence of the contribution of genetic susceptibility to the etiology of Parkinson's disease (PD). Genetic variations in the SNCA gene are well established by linkage and genome-wide association studies. Positive associations of single nucleotide polymorphisms (SNPs) in SNCA and increased risk for PD were found. However, the role of SNCA variants in individual traits or phenotypes of PD is unknown. Here, we reviewed the current literature and identified 57 studies, performed in fourteen different countries, that investigated SNCA variants and susceptibility to PD...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28761773/deep-brain-stimulation-in-parkinson-s-disease-new-and-emerging-targets-for-refractory-motor-and-nonmotor-symptoms
#11
REVIEW
Dustin Anderson, Grayson Beecher, Fang Ba
Parkinson's disease (PD) is a progressive neurodegenerative condition characterized by bradykinesia, tremor, rigidity, and postural instability (PI), in addition to numerous nonmotor manifestations. Many pharmacological therapies now exist to successfully treat PD motor symptoms; however, as the disease progresses, it often becomes challenging to treat with medications alone. Deep brain stimulation (DBS) has become a crucial player in PD treatment, particularly for patients who have disabling motor complications from medical treatment...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28758044/deep-brain-stimulation-of-hemiparkinsonian-rats-with-unipolar-and-bipolar-electrodes-for-up-to-6-weeks-behavioral-testing-of-freely-moving-animals
#12
Kathrin Badstuebner, Ulrike Gimsa, Immo Weber, Armin Tuchscherer, Jan Gimsa
Although the clinical use of deep brain stimulation (DBS) is increasing, its basic mechanisms of action are still poorly understood. Platinum/iridium electrodes were inserted into the subthalamic nucleus of rats with unilateral 6-OHDA-induced lesions of the medial forebrain bundle. Six behavioral parameters were compared with respect to their potential to detect DBS effects. Locomotor function was quantified by (i) apomorphine-induced rotation, (ii) initiation time, (iii) the number of adjusting steps in the stepping test, and (iv) the total migration distance in the open field test...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28706748/comparison-of-globus-pallidus-interna-and-subthalamic-nucleus-in-deep-brain-stimulation-for-parkinson-disease-an-institutional-experience-and-review
#13
REVIEW
Shazia Mirza, Umar Yazdani, Richard Dewey Iii, Neepa Patel, Richard B Dewey, Svjetlana Miocinovic, Shilpa Chitnis
Deep Brain Stimulation (DBS) has revolutionized the lives of patients of Parkinson disease, offering therapeutic options to those not benefiting entirely from medications alone. With its proven track record of outperforming the best medical management, the goal is to unlock the full potential of this therapy. Currently, the Globus Pallidus Interna (GPi) and Subthalamic Nucleus (STN) are both viable targets for DBS, and the choice of site should focus on the constellation of symptoms, both motor and nonmotor, which are key determinants to quality of life...
2017: Parkinson's Disease
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
#14
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/28660090/colonic-oxidative-and-mitochondrial-function-in-parkinson-s-disease-and-idiopathic-rem-sleep-behavior-disorder
#15
C Morén, Í González-Casacuberta, J Navarro-Otano, D Juárez-Flores, D Vilas, G Garrabou, J C Milisenda, C Pont-Sunyer, M Catalán-García, M Guitart-Mampel, E Tobías, F Cardellach, F Valldeoriola, A Iranzo, E Tolosa
OBJECTIVE: To determine potential mitochondrial and oxidative alterations in colon biopsies from idiopathic REM sleep behavior disorder (iRBD) and Parkinson's disease (PD) subjects. METHODS: Colonic biopsies from 7 iRBD subjects, 9 subjects with clinically diagnosed PD, and 9 healthy controls were homogenized in 5% w/v mannitol. Citrate synthase (CS) and complex I (CI) were analyzed spectrophotometrically. Oxidative damage was assessed either by lipid peroxidation, through malondialdehyde and hydroxyalkenal content by spectrophotometry, or through antioxidant enzyme levels of superoxide dismutase-2 (SOD2), glutathione peroxidase-1 (Gpx1), and catalase (CAT) by western blot...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28634568/sirtuin-2-protects-neural-cells-from-oxidative-stress-and-is-elevated-in-neurodegeneration
#16
Preeti Singh, Peter S Hanson, Christopher M Morris
Sirtuins are highly conserved lysine deacetylases involved in ageing, energy production, and lifespan extension. The mammalian SIRT2 has been implicated in Parkinson's disease (PD) where studies suggest SIRT2 promotes neurodegeneration. We therefore evaluated the effects of SIRT2 manipulation in toxin treated SH-SY5Y cells and determined the expression and activity of SIRT2 in postmortem brain tissue from patients with PD. SH-SY5Y viability in response to oxidative stress induced by diquat or rotenone was measured following SIRT2 overexpression or inhibition of deacetylase activity, along with α-synuclein aggregation...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28630780/a-randomized-controlled-trial-of-chinese-medicine-on-nonmotor-symptoms-in-parkinson-s-disease
#17
Ka-Kit Chua, Adrian Wong, Kam-Wa Chan, Yin-Kei Lau, Zhao-Xiang Bian, Jia-Hong Lu, Liang-Feng Liu, Lei-Lei Chen, Ka-Ho Chan, Kim-Pong Tse, Anne Chan, Ju-Xian Song, Justin Wu, Li-Xing Zhu, Vincent Mok, Min Li
Nonmotor symptoms (NMS) of Parkinson's disease (PD) have devastating impacts on both patients and their caregivers. Jiawei-Liujunzi Tang (JLT) has been used to treat some NMS of PD based on the Chinese medicine theory since Qing dynasty. Here we report a double-blind, randomized, placebo-controlled, add-on clinical trial aiming at evaluating the efficacy and safety of the JLT in treating NMS in PD patients. We randomly assigned 111 patients with idiopathic PD to receive either JLT or placebo for 32 weeks. Outcome measures were baseline to week 32 changes in Movement Disorder Society-Sponsored Revision of Unified PD Rating Scale (MDS-UPDRS) Parts I-IV and in NMS assessment scale for PD (NMSS)...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28611932/physiotherapy-in-parkinson-s-disease-building-parkinsonnet-in-czechia
#18
Ota Gal, Martin Srp, Romana Konvalinkova, Martina Hoskovcova, Vaclav Capek, Jan Roth, Evzen Ruzicka
OBJECTIVE: We conducted a questionnaire survey to investigate the availability and quality of physiotherapy (PT) for Parkinson's disease (PD). BACKGROUND: Despite evidence about the benefits of PT, there is no data regarding its use in Czechia. METHODS: Questionnaires were sent to 368 PD patients seen in a single movement disorders centre within two years (inclusion criteria: idiopathic PD, Hoehn and Yahr stage <5, and residence in Prague) and to 211 physical therapists (PTs) registered in Prague...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28607801/quantitative-analysis-of-motor-status-in-parkinson-s-disease-using-wearable-devices-from-methodological-considerations-to-problems-in-clinical-applications
#19
REVIEW
Masahiko Suzuki, Hiroshi Mitoma, Mitsuru Yoneyama
Long-term and objective monitoring is necessary for full assessment of the condition of patients with Parkinson's disease (PD). Recent advances in biotechnology have seen the development of various types of wearable (body-worn) sensor systems. By using accelerometers and gyroscopes, these devices can quantify motor abnormalities, including decreased activity and gait disturbances, as well as nonmotor signs, such as sleep disturbances and autonomic dysfunctions in PD. This review discusses methodological problems inherent in wearable devices...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28607800/effect-of-a-traditional-chinese-herbal-medicine-formulation-on-cell-survival-and-apoptosis-of-mpp-treated-mes-23-5-dopaminergic-cells
#20
Shuifen Ye, Ho Kee Koon, Wen Fan, Yihui Xu, Wei Wei, Chuanshan Xu, Jing Cai
Progressive degeneration of dopaminergic neurons in the substantia nigra (SN) is implicated in Parkinson's disease (PD). The efficacy of these currently used drugs is limited while traditional Chinese medicine (TCM) has been used in the management of neurodegenerative diseases for many years. This study was designed to evaluate the effect of a modified traditional Chinese herbal medicine decoction, Cong Rong Jing (CRJ), on cell survival and apoptosis of 1-methyl-4-phenylpyridinium- (MPP(+)-) treated MES23.5 dopaminergic cells...
2017: Parkinson's Disease
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