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Parkinsons and treatment

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https://www.readbyqxmd.com/read/28538683/metabolic-investigations-of-the-molecular-mechanisms-associated-with-parkinson-s-disease
#1
REVIEW
Robert Powers, Shulei Lei, Annadurai Anandhan, Darrell D Marshall, Bradley Worley, Ronald L Cerny, Eric D Dodds, Yuting Huang, Mihalis I Panayiotidis, Aglaia Pappa, Rodrigo Franco
Parkinson's disease (PD) is a neurodegenerative disorder characterized by fibrillar cytoplasmic aggregates of α-synuclein (i.e., Lewy bodies) and the associated loss of dopaminergic cells in the substantia nigra. Mutations in genes such as α-synuclein (SNCA) account for only 10% of PD occurrences. Exposure to environmental toxicants including pesticides and metals (e.g., paraquat (PQ) and manganese (Mn)) is also recognized as an important PD risk factor. Thus, aging, genetic alterations, and environmental factors all contribute to the etiology of PD...
May 24, 2017: Metabolites
https://www.readbyqxmd.com/read/28534301/effects-of-acetyl-l-carnitine-in-diabetic-neuropathy-and-other-geriatric-disorders
#2
REVIEW
G Sergi, S Pizzato, F Piovesan, C Trevisan, N Veronese, E Manzato
A long history of diabetes mellitus and increasing age are associated with the onset of diabetic neuropathy, a painful and highly disabling complication with a prevalence peaking at 50% among elderly diabetic patients. Acetyl-L-carnitine (ALC) is a molecule derived from the acetylation of carnitine in the mitochondria that has an essential role in energy production. It has recently been proposed as a therapy to improve the symptoms of diabetic neuropathy. ALC is widely distributed in mammalian tissues, including the brain, blood-brain barrier, brain neurons, and astrocytes...
May 22, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28534083/synthetic-alpha-synuclein-fibrils-cause-mitochondrial-impairment-and-selective-dopamine-neurodegeneration-in-part-via-inos-mediated-nitric-oxide-production
#3
Victor Tapias, Xiaoping Hu, Kelvin C Luk, Laurie H Sanders, Virginia M Lee, J Timothy Greenamyre
Intracellular accumulation of α-synuclein (α-syn) are hallmarks of synucleinopathies, including Parkinson's disease (PD). Exogenous addition of preformed α-syn fibrils (PFFs) into primary hippocampal neurons induced α-syn aggregation and accumulation. Likewise, intrastriatal inoculation of PFFs into mice and non-human primates generates Lewy bodies and Lewy neurites associated with PD-like neurodegeneration. Herein, we investigate the putative effects of synthetic human PFFs on cultured rat ventral midbrain dopamine (DA) neurons...
May 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28534003/new-pharmacological-approaches-to-treating-non-motor-symptoms-of-parkinson-s-disease
#4
Michael A Kelberman, Elena M Vazey
PURPOSE OF REVIEW: Non-motor symptoms in patients with Parkinson's Disease (PD) are better predictors of quality of life changes, caregiver burden, and mortality than motor symptoms. Levodopa has limited, and sometimes detrimental, effects on these symptoms. In this review we discuss recent evidence on pharmacological treatments for non-motor symptoms. RECENT FINDINGS: Breakthroughs have been made in the treatment of psychosis and sleep dysfunction. Pimavanserin has become the first FDA approved drug for PD psychosis...
December 2016: Current Pharmacology Reports
https://www.readbyqxmd.com/read/28533935/a-review-of-the-emerging-potential-therapy-for-neurological-disorders-human-embryonic-stem-cell-therapy
#5
REVIEW
Geeta Shroff, Jyoti Dhanda Titus, Rhea Shroff
The first human embryonic stem cell (hESC) line was developed in the late nineties. hESCs are capable of proliferating indefinitely and differentiate into all the three embryonic germ layers. Further, the differentiation of hESC lines into neural precursor cells and neurons, astrocytes and oligodendrocytes showed their potential in treating several incurable neurological disorders such as spinal cord injury (SCI), cerebral palsy (CP), Parkinson's disease (PD). In this review, we will discuss the global scenario of research and therapeutic use of hESCs in the treatment of neurological disorders...
2017: American Journal of Stem Cells
https://www.readbyqxmd.com/read/28532905/choreatic-side-effects-of-deep-brain-stimulation-of-the-anteromedial-subthalamic-nucleus-for-treatment-resistant-obsessive-compulsive-disorder-a-case-report
#6
A E P Mulders, A F G Leentjens, K Schruers, A Duits, L Ackermans, Y Temel
BACKGROUND: Patients with treatment-resistant obsessive-compulsive disorder (OCD) are potential candidates for deep brain stimulation (DBS). The anteromedial subthalamic nucleus (STN) is amongst the most commonly used targets for DBS in OCD. CASE DESCRIPTION: We present a patient with a 30-year history of treatment-resistant OCD who underwent anteromedial STN-DBS. Despite a clear mood-enhancing effect, stimulation caused motor side-effects including bilateral hyperkinesia, dyskinesias and sudden large amplitude choreatic movements of arms and legs when stimulating at voltages above circa 1...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28532886/the-effects-of-tai-chi-on-physical-function-and-well-being-among-persons-with-parkinson-s-disease-a-systematic-review
#7
Klaudia J Ćwiękała-Lewis, Matthew Gallek, Ruth E Taylor-Piliae
Current medical treatments for Parkinson's disease (PD) are mainly palliative, though research indicates Tai Chi exercise improves physical function and well-being. An electronic database search of PubMed, CINAHL, Web of Science, Cochrane Library, PsycINFO and Embase was conducted, to examine current scientific literature for potential benefits of Tai Chi on physical function and well-being among persons with PD. A total of 11 studies met the inclusion criteria: 7 randomized clinical trials and 4 quasi-experimental studies...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28530779/predictive-factors-for-early-hospital-readmission-and-1-year-mortality-in-elder-patients-following-surgical-treatment-of-a-hip-fracture
#8
Hakan Sofu, Hanifi Üçpunar, Yalkın Çamurcu, Serda Duman, Mehmet Nuri Konya, Sarper Gürsu, Vedat Şahin
BACKGROUND: Early hospital readmission after surgically treated hip fracture is a common entity, often involving an adverse event and causing strains on an already overburdened healthcare system. The main purposes of the present study were to determine the 30-day readmission rate, analyze the predictive factors for early hospital readmissions, and assess 1-year mortality following surgical treatment of hip fracture in elderly patients. Retrospective case-control study. METHODS: In total, 517 patients with a mean age of 74 years were evaluated...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28529828/two-pore-channels-and-parkinson-s-disease-where-s-the-link
#9
Pilar Rivero-Ríos, Belén Fernández, Jesús Madero-Pérez, María Romo Lozano, Sabine Hilfiker
Two-pore channels are endolysosomal Ca(2+) release channels involved in proper trafficking to and from those organelles. They are the likely targets for the Ca(2+)-mobilizing messenger NAADP, and are further regulated by a variety of mechanisms including phosphoinositide levels and Rab proteins. As discussed here, recent studies highlight a role for these channels in the pathomechanism(s) underlying Parkinson's disease, with important implications for possible alternative treatment strategies.
June 1, 2016: Messenger
https://www.readbyqxmd.com/read/28529475/fragile-x-associated-tremor-ataxia-syndrome-from-molecular-pathogenesis-to-development-of-therapeutics
#10
REVIEW
Ha Eun Kong, Juan Zhao, Shunliang Xu, Peng Jin, Yan Jin
Fragile X-associated tremor/ataxia syndrome (FXTAS) is a neurodegenerative disorder caused by a premutation CGG repeat expansion (55-200 repeats) within the 5' UTR of the fragile X gene (FMR1). FXTAS is characterized by intension tremor, cerebellar ataxia, progressive neurodegeneration, parkinsonism and cognitive decline. The development of transgenic mouse and Drosophila melanogaster models carrying an expanded CGG repeat has yielded valuable insight into the pathophysiology of FXTAS. To date, we know of two main molecular mechanisms of this disorder: (1) a toxic gain of function of the expanded CGG-repeat FMR1 mRNA, which results in the binding/sequestration of the CGG-binding proteins; and (2) CGG repeat-associated non-AUG-initiated (RAN) translation, which generates a polyglycine peptide toxic to cells...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28528805/acute-response-of-non-motor-symptoms-to-subthalamic-deep-brain-stimulation-in-parkinson-s-disease
#11
Margherita Fabbri, Miguel Coelho, Leonor Correia Guedes, Mario M Rosa, Daisy Abreu, Nilza Gonçalves, Angelo Antonini, Joaquim J Ferreira
BACKGROUND: Subthalamic deep brain stimulation (STN-DBS) is an established treatment for the motor complications of Parkinson's disease (PD) and may have beneficial effects on non-motor symptoms (NMS). However, the acute effect of STN stimulation on NMS has only been explored in small PD cohorts with short post-surgical follow-up. OBJECTIVE: To study NMS response to an acute stimulation challenge in an STN-DBS PD population with a medium/long-term post-surgical follow-up...
May 8, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28528366/cdk5-mediated-phosphorylation-dependent-ubiquitination-and-degradation-of-e3-ubiquitin-ligases-gp78-accelerates-neuronal-death-in-parkinson-s-disease
#12
Qingzhi Wang, Fengjuan Jiao, Pei Zhang, Jianguo Yan, Zheng Zhang, Feng He, Qian Zhang, Zexi Lv, Xiang Peng, Hongwei Cai, Bo Tian
The molecular mechanisms responsible for the loss of dopaminergic neurons in Parkinson's disease (PD) remain obscure. Loss of function of E3 ubiquitin ligases is associated with mitochondria dysfunction, dysfunction of protein degradation, and α-synuclein aggregation, which are major contributors to neurodegeneration in PD. Recent research has thus focused on E3 ubiquitin ligase glycoprotein 78 (GP78); however, the role of GP78 in PD pathogenesis remains unclear. Notably, cyclin-dependent kinase 5 (CDK5) controls multiple cellular events in postmitotic neurons, and CDK5 activity has been implicated in the pathogenesis of PD...
May 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28527657/clinical-outcomes-and-cost-effectiveness-of-brief-guided-parent-delivered-cognitive-behavioural-therapy-and-solution-focused-brief-therapy-for-treatment-of-childhood-anxiety-disorders-a-randomised-controlled-trial
#13
Cathy Creswell, Mara Violato, Hannah Fairbanks, Elizabeth White, Monika Parkinson, Gemma Abitabile, Alessandro Leidi, Peter J Cooper
BACKGROUND: Half of all lifetime anxiety disorders emerge before age 12 years; however, access to evidence-based psychological therapies for affected children is poor. We aimed to compare the clinical outcomes and cost-effectiveness of two brief psychological treatments for children with anxiety referred to routine child mental health settings. We hypothesised that brief guided parent-delivered cognitive behavioural therapy (CBT) would be associated with better clinical outcomes than solution-focused brief therapy and would be cost-effective...
May 17, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28527632/cerium-oxide-nanoparticles-could-ameliorate-behavioral-and-neurochemical-impairments-in-6-hydroxydopamine-induced-parkinson-s-disease-in-rats
#14
Maha A Hegazy, Hala M Maklad, Doaa M Samy, Doaa A Abdelmonsif, Bassma M El Sabaa, Fatma Y Elnozahy
BACKGROUND: Cerium oxide nanoparticles (CeO2NPs) showed promising effects in neurodegenerative diseases including some animal models of Parkinsonism. However, the implication of CeO2NPs in 6-hydroxydopamine (6-OHDA) induced Parkinsonism remains to be investigated. AIM: This study was designed to assess whether CeO2NPs treatment could alleviate neurobehavioral and neurobiochemical deficits in 6-OHDA induced neurotoxicity in rats. MATERIAL AND METHODS: 50 rats received left intrastriatal (IS) injection of either saline (control, n = 10) or 6-OHDA (n = 40)...
May 17, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28527591/the-role-of-astrocyte-dysfunction-in-parkinson-s-disease-pathogenesis
#15
REVIEW
Heather D E Booth, Warren D Hirst, Richard Wade-Martins
Astrocytes are the most populous glial subtype and are critical for brain function. Despite this, historically there have been few studies into the role that they may have in neurodegenerative diseases, such as Parkinson's disease (PD). Recently, however, several studies have determined that genes known to have a causative role in the development of PD are expressed in astrocytes and have important roles in astrocyte function. Here, we review these recent developments and discuss their impact on our understanding of the pathophysiology of PD, and the implications that this might have for its treatment...
May 17, 2017: Trends in Neurosciences
https://www.readbyqxmd.com/read/28527232/three-dimensional-evaluation-of%C3%A2-postural%C3%A2-stability-in-parkinson-s-disease-with-mobile-technology
#16
Sarah J Ozinga, Mandy Miller Koop, Susan M Linder, Andre G Machado, Tanujit Dey, Jay L Alberts
BACKGROUND: Postural instability is a hallmark of Parkinson's disease. Objective metrics to characterize postural stability are necessary for the development of treatment algorithms to aid in the clinical setting. OBJECTIVE: The aim of this project was to validate a mobile device platform and resultant three-dimensional balance metric that characterizes postural stability. METHODS: A mobile Application was developed, in which biomechanical data from inertial sensors within a mobile device were processed to characterize movement of center of mass in the medial-lateral, anterior-posterior and trunk rotation directions...
May 13, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28527045/amyotrophic-lateral-sclerosis-like-superoxide-dismutase-1-proteinopathy-is-associated-with-neuronal-loss-in-parkinson-s-disease-brain
#17
Benjamin G Trist, Katherine M Davies, Veronica Cottam, Sian Genoud, Richard Ortega, Stéphane Roudeau, Asuncion Carmona, Kasun De Silva, Valerie Wasinger, Simon J G Lewis, Perminder Sachdev, Bradley Smith, Claire Troakes, Caroline Vance, Christopher Shaw, Safa Al-Sarraj, Helen J Ball, Glenda M Halliday, Dominic J Hare, Kay L Double
Neuronal loss in numerous neurodegenerative disorders has been linked to protein aggregation and oxidative stress. Emerging data regarding overlapping proteinopathy in traditionally distinct neurodegenerative diseases suggest that disease-modifying treatments targeting these pathological features may exhibit efficacy across multiple disorders. Here, we describe proteinopathy distinct from classic synucleinopathy, predominantly comprised of the anti-oxidant enzyme superoxide dismutase-1 (SOD1), in the Parkinson's disease brain...
May 19, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28526609/effects-of-l-dopa-benserazide-co-treatment-on-colonic-excitatory-cholinergic-motility-and-enteric-inflammation-following-dopaminergic-nigrostriatal-neurodegeneration
#18
C Pellegrini, L Antonioli, R Colucci, E Tirotta, D Gentile, C Ippolito, C Segnani, G Levandis, S Cerri, R F Blandini, E Barocelli, V Ballabeni, N Bernardini, C Blandizzi, M Fornai
INTRODUCTION: The mainstay therapy for Parkinson's disease (PD) relies on L-3,4- dihydroxyphenylalanine (L-DOPA) plus a DOPA-decarboxylase inhibitor. However, their effects on colonic dysmotility and inflammation observed in PD are undetermined. This study examined the effects of L-DOPA plus benserazide (BE) on colonic motility and inflammation in rats with central nigrostriatal dopaminergic denervation. METHODS: Neurodegeneration was induced by 6-hydroxydopamine (6-OHDA) injection into the median forebrain bundle (MFB)...
May 16, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28526446/thymoquinone-exerts-neuroprotective-effect-in-animal-model-of-parkinson-s-disease
#19
Seyedeh Shohreh Ebrahimi, Shahrbanoo Oryan, Esmael Izadpanah, Kambiz Hassanzadeh
Oxidative stress plays an important role in both the initiation and progression of Parkinson's disease (PD). Rotenone, an environmental toxin, induces oxidative stress and impact mitochondrial dynamics, including fission and fusion. Thymoquinone (TQ) has been reported to have antioxidant and anti-inflammatory characteristics in vitro and in vivo. TQ scavenges free radicals so prevents cell damage against oxidative agents. To evaluate the efficacy of TQ in the management of PD, male Wistar rats (8-10 months) received rotenone...
May 16, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28525887/an-updated-meta-analysis-of-amantadine-for-treating-dyskinesia-in-parkinson-s-disease
#20
Min Kong, Maowen Ba, Chao Ren, Ling Yu, Shengjie Dong, Guoping Yu, Hui Liang
In recent years, a few of randomized controlled trials (RCTs) about amantadine for treating dyskinesia in Parkinson's disease (PD) were completed. Here, we conducted a systematic literature review about the clinical research to provide the updated evidence for treating dyskinesia. Electronic search of Medline, PubMed, Cochrane Library, and other databases up to May 2016 for relevant studies was performed. We selected the Unified Parkinson's Disease Rating Scale IV (UPDRS IV) and Dyskinesia Rating Scales (DRS) as efficacy outcomes of amantadine on dyskinesia...
May 5, 2017: Oncotarget
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