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Parkinsons and treatment

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https://www.readbyqxmd.com/read/28441826/-a-childhood-onset-rapid-onset-dystonia-parkinsonism-family-with-atp1a3-gene-mutation-and-literatures-review
#1
C L Zhang, F Yin, F He, N Gai, Z Q Shi, J Peng
Objective: To explore clinical characteristics, treatment, and prognosis of a family with childhood-onset rapid-onset dystonia parkinsonism (RDP) caused by ATP1A3 gene mutation and review literatures. Method: The clinical data of a RDP child, his brother and mother had been analyzed retrospectively. This family was admitted to Xiangya Hospital in January 2016. DNA samples were analyzed by the next-generation sequencing and confirmed by Sanger sequencing. Related literature from PubMed, Online Mendelian Inheritance in Man (OMIM), CNKI and Wanfang databases to date (up to October 2016) with"Rapid-onset dystonia-parkinsonism"RDP"DYT12" as key words was reviewed...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28438600/neurotrophin-receptors-in-the-pathogenesis-diagnosis-and-therapy-of-neurodegenerative-diseases
#2
REVIEW
Jacopo Meldolesi
In the last few years, exciting properties have emerged regarding the activation, signaling, mechanisms of action, and therapeutic targeting of the two types of neurotrophin receptors: the p75(NTR) with its intracellular and extracellular peptides, the Trks, their precursors and their complexes. This review summarizes these new developments, with particular focus on neurodegenerative diseases. Based on the evolving knowledge, innovative concepts have been formulated regarding the pathogenesis of these diseases, especially the Alzheimer's and two other, the Parkinson's and Huntington's diseases...
April 21, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28437187/synergy-between-choroid-plexus-epithelial-cells-conditioned-medium-and-knockout-serum-replacement-converts-human-adipose-derived-stem-cells-to-dopamine-secreting-neurons
#3
Mahdi Eskandarian Boroujeni, Mossa Gardaneh, Mehrnoosh Hasan Shahriari, Abbas Aliaghaei, Sanaz Hasani
Human adipose-derived stem cells (hADSCs) have great capacity to differentiate into mesodermal origins as well as non-mesodermal lineages including neural cells. This valuable feature paves the way for the therapeutic application of hADSCs for neurodegenerative maladies such as Parkinson's disease (PD). We tested the capacity of Choroid Plexus epithelial cells-conditioned medium (CPEC-CM) alone or cocktailed with knock-out serum (KS) to induce dopaminergic differentiation of hADSCs. To this end, hADSCs from lipoaspirate were phenotypically characterized and shown to maintain mesodermal multipotency so selected media easily differentiated them into osteoblasts, chondrocytes and adipocytes...
March 2, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28436572/a-randomized-double-blind-placebo-controlled-trial-evaluating-cysteamine-in-huntington-s-disease
#4
Christophe Verny, Anne-Catherine Bachoud-Lévi, Alexandra Durr, Cyril Goizet, Jean-Philippe Azulay, Clémence Simonin, Christine Tranchant, Fabienne Calvas, Pierre Krystkowiak, Perrine Charles, Katia Youssov, Clarisse Scherer, Adriana Prundean, Audrey Olivier, Pascal Reynier, Frédéric Saudou, Patrick Maison, Philippe Allain, Erica von Studnitz, Dominique Bonneau
BACKGROUND: Cysteamine has been demonstrated as potentially effective in numerous animal models of Huntington's disease. METHODS: Ninety-six patients with early-stage Huntington's disease were randomized to 1200 mg delayed-release cysteamine bitartrate or placebo daily for 18 months. The primary end point was the change from baseline in the UHDRS Total Motor Score. A linear mixed-effects model for repeated measures was used to assess treatment effect, expressed as the least-squares mean difference of cysteamine minus placebo, with negative values indicating less deterioration relative to placebo...
April 24, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28436395/phase-iib-study-of-intranasal-glutathione-in-parkinson-s-disease
#5
Laurie K Mischley, Richard C Lau, Eric G Shankland, Timothy K Wilbur, Jeannie M Padowski
BACKGROUND: Reduced glutathione (GSH) is an endogenously synthesized tripeptide depleted early in the course of Parkinson's disease (PD) and GSH augmentation has been proposed as a therapeutic strategy in PD. OBJECTIVE: This Phase IIb study was designed to evaluate whether a Phase III study of intranasal GSH, (in)GSH, for symptomatic relief is warranted and to determine the most appropriate trial design for a disease-modification study. METHODS: This was a double-blind, placebo-controlled trial of 45 individuals with Hoehn & Yahr Stage 1-3 PD...
April 20, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28435104/drosophila-pink1-and-parkin-loss-of-function-mutants-display-a-range-of-non-motor-parkinson-s-disease-phenotypes
#6
Hannah Julienne, Edgar Buhl, David S Leslie, James J L Hodge
Parkinson's disease (PD) is more commonly associated with its motor symptoms and the related degeneration of dopamine (DA) neurons. However, it is becoming increasingly clear that PD patients also display a wide range of non-motor symptoms, including memory deficits and disruptions of their sleep-wake cycles. These have a large impact on their quality of life, and often precede the onset of motor symptoms, but their etiology is poorly understood. The fruit fly Drosophila has already been successfully used to model PD, and has been used extensively to study relevant non-motor behaviours in other contexts, but little attention has yet been paid to modelling non-motor symptoms of PD in this genetically tractable organism...
April 20, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28434243/-clinical-and-neuropathological-characteristics-of-dementia-with-lewy-bodies
#7
János Bencze, Viktória Simon, Erika Bereczki, Réka Majer, Gréta Varkoly, Balázs Murnyák, János Kálmán, Tibor Hortobágyi
Dementia with Lewy bodies (DLB) is the second most common neurodegenerative dementia. The accurate diagnosis is often possible only by neuropathological examination. The morphologic hallmarks are the presence of α-synuclein-rich Lewy bodies and Lewy neurites, identical to those seen in Parkinson's disease (PD) and Parkinson's disease dementia (PDD). Neurotransmitter deficits, synaptic and ubiquitin-proteasome system (UPS) dysfunction play major role in the pathomechanism. Characteristic symptoms are cognitive fluctuation, parkinsonism and visual hallucinations...
April 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28434076/%C3%AE-synuclein-nonhuman-primate-models-of-parkinson-s-disease
#8
REVIEW
David J Marmion, Jeffrey H Kordower
Proper understanding of the mechanism(s) by which α-synuclein misfolds and propagates may hold the key to unraveling the complex pathophysiology of Parkinson's disease. A more complete understanding of the disease itself, as well as establishing animal models that fully recapitulate pathological and functional disease progression, are needed to develop treatments that will delay, halt or reverse the disease course. Traditional neurotoxin-based animal models fail to mimic crucial aspects of Parkinson's and thus are not relevant for the study of neuroprotection and disease-modifying therapies...
April 22, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28433987/radiofrequency-lesions-through-deep-brain-stimulation-electrodes-in-movement-disorders-case-report-and-review-of-the-literature
#9
Javier Pérez-Suárez, Cristina V Torres Díaz, Lydia López Manzanares, Marta Navas García, Jesús Pastor, Patricia Barrio Fernández, Rafael G de Sola
BACKGROUND: Although there are few reports of radiofrequency lesions performed through deep brain stimulation (DBS) electrodes in patients with movement disorders, experience with this method is scarce. METHODS: We present 2 patients who had been previously treated with DBS of subthalamic nuclei (STN) and the ventral intermediate (VIM) nucleus of the thalamus for Parkinson's disease and essential tremor, respectively, and underwent a radiofrequency lesion through their DBS electrodes after developing a hardware infection...
April 22, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28433105/symptomatic-treatment-of-neurologic-symptoms-in-wilson-disease
#10
Tomasz Litwin, Petr Dušek, Anna Członkowska
Wilson disease (WD) is a potentially treatable neurodegenerative disorder. In the majority of cases, treatment with drugs that induce a negative copper balance (usually chelators or zinc salts) leads to improvements in liver function and neurologic signs. However, some patients show severe neurologic symptoms at diagnosis, such as tremor, dystonia, parkinsonism, and chorea. In this patient group, some neurologic deficits may persist despite adequate treatment, and further neurologic deterioration may be observed after treatment initiation...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28432778/cross-species-studies-of-cognition-relevant-to-drug-discovery-a-translational-approach
#11
REVIEW
T W Robbins
This Review advances the case that bidirectional, cross-species translation of findings from experimental animals to and from humans is an important strategy for drug discovery. Animal models of mental disorders require appropriate behavioural or cognitive outcome variables that can be generalized cross-species. One example is the treatment of impulsive behaviour in attention deficit hyperactivity disorder (ADHD) with stimulant drugs. Performance on the stop signal reaction task as an index of impulsivity is improved both in healthy human volunteers and in patients with adult ADHD by stimulant drugs and also by the selective noradrenergic reuptake blocker atomoxetine...
April 22, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28432010/exposure-to-an-enriched-environment-facilitates-motor-recovery-and-prevents-short-term-memory-impairment-and-reduction-of-striatal-bdnf-in-a-progressive-pharmacological-model-of-parkinsonism-in-mice
#12
Clarissa L C Campêlo, José R Santos, Anatildes F Silva, Aline L Dierschnabel, André Pontes, Jeferson S Cavalcante, Alessandra M Ribeiro, Regina H Silva
Previous studies showed that the repeated administration with a low dose of reserpine (RES) induces a gradual appearance of motor signs and cognitive deficits compatible with parkinsonism in rodents. Environmental stimulation has neuroprotective effects in animal models of neurodegenerative damage, including acutely induced parkinsonism. We investigated the effects of exposure to an enriched environment (EE) on motor, cognitive and neuronal (levels of tyrosine hydroxylase, TH and brain derived neurotrophic factor, BDNF) deficits induced by a progressive model of Parkinson's disease (PD) in mice...
April 18, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28430167/induced-pluripotent-stem-cell-modeling-of-gaucher-s-disease-what-have-we-learned
#13
REVIEW
Dino Matias Santos, Gustavo Tiscornia
Gaucher's disease (GD) is the most frequently inherited lysosomal storage disease, presenting both visceral and neurologic symptoms. Mutations in acid β-glucocerebrosidase disrupt the sphingolipid catabolic pathway promoting glucosylceramide (GlcCer) accumulation in lysosomes. Current treatment options are enzyme replacement therapy (ERT) and substrate reduction therapy (SRT). However, neither of these approaches is effective in treating the neurological aspect of the disease. The use of small pharmacological compounds that act as molecular chaperones is a promising approach that is still experimental...
April 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28429453/tolcapone-induces-oxidative-stress-leading-to-apoptosis-and-inhibition-of-tumor-growth-in-neuroblastoma
#14
Tyler Maser, Maria Rich, David Hayes, Ping Zhao, Abhinav B Nagulapally, Jeffrey Bond, Giselle Saulnier Sholler
Catechol-O-methyltransferase (COMT) is an enzyme that inactivates dopamine and other catecholamines by O-methylation. Tolcapone, a drug commonly used in the treatment of Parkinson's disease, is a potent inhibitor of COMT and previous studies indicate that Tolcapone increases the bioavailability of dopamine in cells. In this study, we demonstrate that Tolcapone kills neuroblastoma (NB) cells in preclinical models by inhibition of COMT. Treating four established NB cells lines (SMS-KCNR, SH-SY5Y, BE(2)-C, CHLA-90) and two primary NB cell lines with Tolcapone for 48 h decreased cell viability in a dose-dependent manner, with IncuCyte imaging and Western blotting indicating that cell death was due to caspase-3-mediated apoptosis...
April 21, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28429275/tgf-%C3%AE-1-neuroprotection-via-inhibition-of-microglial-activation-in-a-rat-model-of-parkinson-s-disease
#15
Xiao Chen, Zhan Liu, Bei-Bei Cao, Yi-Hua Qiu, Yu-Ping Peng
Transforming growth factor (TGF)-β1 is a pleiotropic cytokine with immunosuppressive and anti-inflammatory properties. Recently we have shown that TGF-β1 pretreatment in vitro protects against 1-methyl-4-phenylpyridinium (MPP(+))-induced dopaminergic neuronal loss that characterizes in Parkinson's disease (PD). Herein, we aimed to demonstrate that TGF-β1 administration in vivo after MPP(+) toxicity has neuroprotection that is achieved by a mediation of microglia. A rat model of PD was prepared by injecting MPP(+) unilaterally in the striatum...
April 20, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28428907/palliative-care-in-huntington-disease-personal-reflections-and-a-review-of-the-literature
#16
REVIEW
Christopher G Tarolli, Amy M Chesire, Kevin M Biglan
BACKGROUND: Huntington disease is a fatal, autosomal dominant, neurodegenerative disorder manifest by the triad of a movement disorder, behavioral disturbances, and dementia. At present, no curative or disease modifying therapies exist for the condition and current treatments are symptomatic. Palliative care is an approach to care that focuses on symptom relief, patient and caregiver support, and end of life care. There is increasing evidence of the benefit of palliative care throughout the course of neurodegenerative conditions including Parkinson disease and amyotrophic lateral sclerosis...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28428563/a-sublethal-dose-of-a-neonicotinoid-insecticide-disrupts-visual-processing-and-collision-avoidance-behaviour-in-locusta-migratoria
#17
Rachel H Parkinson, Jacelyn M Little, John R Gray
Neonicotinoids are known to affect insect navigation and vision, however the mechanisms of these effects are not fully understood. A visual motion sensitive neuron in the locust, the Descending Contralateral Movement Detector (DCMD), integrates visual information and is involved in eliciting escape behaviours. The DCMD receives coded input from the compound eyes and monosynaptically excites motorneurons involved in flight and jumping. We show that imidacloprid (IMD) impairs neural responses to visual stimuli at sublethal concentrations, and these effects are sustained two and twenty-four hours after treatment...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428137/jwa-antagonizes-paraquat-induced-neurotoxicity-via-activation-of-nrf2
#18
Xue Zhao, Rihua Wang, Jianping Xiong, Donglin Yan, Aiping Li, Shouyu Wang, Jin Xu, Jianwei Zhou
Paraquat (PQ), a widely used environmental toxin in agriculture, contributes to the onset and progression of Parkinson's disease (PD) by damaging neurons. The JWA gene, also known as ARL6IP5, exerts a protective effect on degenerating dopamine (DA) neurons. However, the roles of JWA in PQ-induced neuronal damage are still unknown. In our study, two neuronal cell lines (HT-22 and SH-SY5Y) and neuron-specific JWA knockout (JWA-nKO) and age-matched wild-type (JWA-nWT) mice were subjected to PQ treatment. The results indicate that PQ administration triggers the upregulation of JWA...
April 17, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28426824/becoming-more-oneself-changes-in-personality-following-dbs-treatment-for-psychiatric-disorders-experiences-of-ocd-patients-and-general-considerations
#19
Sanneke de Haan, Erik Rietveld, Martin Stokhof, Damiaan Denys
Does DBS change a patient's personality? This is one of the central questions in the debate on the ethics of treatment with Deep Brain Stimulation (DBS). At the moment, however, this important debate is hampered by the fact that there is relatively little data available concerning what patients actually experience following DBS treatment. There are a few qualitative studies with patients with Parkinson's disease and Primary Dystonia and some case reports, but there has been no qualitative study yet with patients suffering from psychiatric disorders...
2017: PloS One
https://www.readbyqxmd.com/read/28425730/the-relation-of-anxiety-and-cognition-in-parkinson-s-disease
#20
Gretchen O Reynolds, Kristine K Hanna, Sandy Neargarder, Alice Cronin-Golomb
OBJECTIVE: Parkinson's disease (PD) has long been conceptualized as a motor disorder, but nonmotor symptoms also manifest in the disease and significantly reduce quality of life. Anxiety and cognitive dysfunction are prevalent nonmotor symptoms, even in early disease stages, but the relation between these symptoms remains poorly understood. We examined self-reported anxiety and neurocognitive function, indexed by measures of executive function (set-shifting and phonemic fluency), categorical fluency, and attention/working memory...
April 20, 2017: Neuropsychology
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