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https://www.readbyqxmd.com/read/28724204/gait-and-balance-impairment-after-acute-methanol-poisoning
#1
Kamila Peterová, Hana Brožová, Jiří Klempíř, Irena Lišková, Ondřej Bezdíček, Petr Ridzoň, Manuela Vaněčková, Sergej Zakharov, Daniela Pelclová, Michal Miovský, Evžen Růžička
Neurological sequelae including gait impairment were reported in survivors after methanol intoxication; however, no systematic study has been published so far. We aimed to analyse gait and balance impairment in a group of Czech methanol poisoning survivors. We examined 43 patients (age 46±13 years) 2-8 months after methanol poisoning and 43 healthy controls. Investigations contained a shortened version of Falls Efficacy Scale (FES), clinical tests of gait and balance including Timed Up and Go test (TUG) and gait analysis using GaitRite(®) system, neurological and neuropsychological examination, brain imaging, EMG and tests of alcohol consumption...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28723952/evidence-for-prehistoric-origins-of-the-g2019s-mutation-in-the-north-african-berber-population
#2
Rafiqua Ben El Haj, Ayyoub Salmi, Wafa Regragui, Ahmed Moussa, Naima Bouslam, Houyam Tibar, Ali Benomar, Mohamed Yahyaoui, Ahmed Bouhouche
The most common cause of the monogenic form of Parkinson's disease known so far is the G2019S mutation of the leucine-rich repeat kinase 2 (LRRK2) gene. Its frequency varies greatly among ethnic groups and geographic regions ranging from less than 0.1% in Asia to 40% in North Africa. This mutation has three distinct haplotypes; haplotype 1 being the oldest and most common. Recent studies have dated haplotype 1 of the G2019S mutation to about 4000 years ago, but it remains controversial whether the mutation has a Near-Eastern or Moroccan-Berber ancestral origin...
2017: PloS One
https://www.readbyqxmd.com/read/28723243/pathogenicity-of-nectriaceous-fungi-on-avocado-in-australia
#3
Louisamarie Parkinson, Roger Shivas, Elizabeth Dann
Black root rot is a severe disease of young avocado trees in Australia causing black necrotic roots, tree stunting, and leaf drop prior to tree death. Nectriaceous fungi (Nectriaceae, Hypocreales), are commonly isolated from symptomatic roots. This research tested the pathogenicity of 19 isolates from Calonectria, Cylindrocladiella, Dactylonectria, Gliocladiopsis and Ilyonectria, spp. collected from young avocado trees and other hosts. Glasshouse pathogenicity tests with avocado (Persea americana) cv. Reed seedlings confirmed that Calonectria ilicicola is a severe pathogen of avocado, causing stunting, wilting and seedling death within 5 weeks of inoculation...
July 19, 2017: Phytopathology
https://www.readbyqxmd.com/read/28722658/the-golgi-localized-gamma-ear-containing-arf-binding-gga-protein-family-alters-alpha-synuclein-%C3%AE-syn-oligomerization-and-secretion
#4
Bjoern von Einem, Judith Eschbach, Martin Kiechle, Anke Wahler, Dietmar R Thal, Pamela J McLean, Jochen H Weishaupt, Albert C Ludolph, Christine A F von Arnim, Karin M Danzer
Several age-related neurodegenerative disorders are associated with protein misfolding and aggregation of toxic peptides. α-synuclein (α-syn) aggregation and the resulting cytotoxicity is a hallmark of Parkinson's disease (PD) as well as dementia with Lewy bodies. Rising evidence points to oligomeric and pre-fibrillar forms as the pathogenic species, and oligomer secretion seems to be crucial for the spreading and progression of PD pathology. Recent studies implicate that dysfunctions in endolysosomal/autophagosomal pathways increase α-syn secretion...
July 15, 2017: Aging
https://www.readbyqxmd.com/read/28722546/the-role-of-recollection-and-familiarity-in-nondemented-parkinson-s-patients
#5
Alfonso Pitarque, Juan C Melendez, Alicia Sales, Encar Satorres, Joaquin Escudero, Salvador Algarabel
The aim of the current study was to examine if recollection and familiarity decline in nondemented Parkinson's patients. To do so we compared a sample of older people with Parkinson's disease (n = 32) to a control sample of healthy older people (n = 32) on an associative recognition task in which we manipulated the repetition of the pairs during the study phase (half of the pairs were presented once and half twice) to obtain corrected estimates of recollection, familiarity, and false recognition based on the logic of the process-dissociation procedure...
July 2017: Journal of General Psychology
https://www.readbyqxmd.com/read/28722382/-evaluation-and-management-of-hyperhidrosis
#6
Sébastien Menzinger, Sandrine Quenan
Hyperhidrosis is excessive sweating beyond what is expected for thermoregulatory needs. Nearly 3 % of the population has hyperhidrosis. It may be primary or secondary to medications or general medical conditions, including diabetes mellitus, hyperthyroidism, Parkinson disease, etc. History taking and clinical examination are essential to differentiate primary from secondary origins. Blood tests and a consultation with a specialist (endocrinologist, neurologist) is sometimes necessary to establish the diagnosis...
March 29, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28721925/hildegard-of-bingen-s-remedies-for-parkinson-s-disease
#7
Francesco Brigo, Bruno Brigo, Nicola Luigi Bragazzi, Raffaele Nardone, Mariano Martini
No abstract text is available yet for this article.
August 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28721826/clinical-uses-of-melatonin-in-neurological-diseases-and-mental-and-behavioural-disorders
#8
Emilio J Sánchez-Barceló, Noemi R Revilla, María D Mediavilla, Carmen Martínez-Cué, Russel J Reiter
Melatonin is a molecule with numerous properties applicable to the treatment of neurological diseases. Among these properties are the following: potent scavenger of oxygen and nitrogen reactive species, anti-inflammatory features, immuno-enhancing nature, and modulation of circadian rhythmicity. Furthermore, low concentrations of melatonin are usually found in patients with neurological diseases and mental disorders. The positive results obtained in experimental models of diverse pathologies, including diseases of the nervous system (e...
July 18, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28721811/moving-to-the-rhythm-with-clock-circadian-genes-autophagy-mtor-and-sirt1-in-degenerative-disease-and-cancer
#9
Kenneth Maiese
BACKGROUND: The mammalian circadian clock and its associated clock genes are increasingly be recognized as critical components for a number of physiological and disease processes that extend beyond hormone release, thermal regulation, and sleep-wake cycles. New evidence suggests that clinical behavior disruptions that involve prolonged shift work and even space travel may negatively impact circadian rhythm and lead to multi-system disease. METHODS: In light of the significant role circadian rhythm can hold over the body's normal physiology as well as disease processes, we examined and discussed the impact circadian rhythm and clock genes hold over lifespan, neurodegenerative disorders, and tumorigenesis...
July 17, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28721669/mimicking-parkinson-s-disease-in-a-dish-merits-and-pitfalls-of-the-most-commonly-used-dopaminergic-in-vitro-models
#10
REVIEW
Fernanda Martins Lopes, Ivi Juliana Bristot, Leonardo Lisbôa da Motta, Richard B Parsons, Fabio Klamt
Parkinson's disease (PD) is the second most common neurodegenerative disorder and has both unknown etiology and non-curative therapeutic options. Patients begin to present the classic motor symptoms of PD-tremor at rest, bradykinesia and rigidity-once 50-70% of the dopaminergic neurons of the nigrostriatal pathway have degenerated. As a consequence of this, it is difficult to investigate the early-stage events of disease pathogenesis. In vitro experimental models are used extensively in PD research because they present a controlled environment that enables the direct investigation of the early molecular mechanisms that are potentially involved with dopaminergic degeneration, as well as for the screening of potential therapeutic drugs...
July 18, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28721631/1-trichloromethyl-1-2-3-4-tetrahydro-beta-carboline-taclo-alters-cell-cycle-progression-in-human-neuroblastoma-cell-lines
#11
Rakesh Kumar Sharma, Eduardo Candelario-Jalil, Doris Feineis, Gerhard Bringmann, Bernd L Fiebich, Ravi Shankar Akundi
1-Trichloromethyl-1,2,3,4-tetrahydro-β-carboline, abbreviated as TaClo, is an endogenous neurotoxin capable of formation in the brain through the condensation of neuronal tryptamine with ingested exogenous toxins such as trichloroethylene or chloral hydrate. Due to its structural resemblance to 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine (MPTP), and similar ability to inhibit mitochondrial complex I, TaClo has been implicated in the etiology of Parkinson's disease. Previous studies have shown the cytotoxicity of TaClo in various cell culture models...
July 18, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28721577/characterization-of-motor-events-in-rem-sleep-behavior-disorder
#12
Paulo Bugalho, Tânia Lampreia, Rita Miguel, Marcelo Mendonça, André Caetano, Raquel Barbosa
We used video-polysomnography to characterize motor events (ME) in 14 Parkinson's disease (PD-RBD) and 18 idiopathic (iRBD) REM sleep behavior disorder cases. ME occurred predominantly in the upper limbs and were mostly simple, non-emotional, distal and focal. There were no significant differences in ME features between PD-RBD and iRBD groups. Our data suggests that RBD ME are mostly non violent. Similarity between PD-RBD and iRBD groups suggests that motor dysfunction does not affect ME features.
July 18, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28720846/physiological-stress-induced-corticosterone-increases-heme-uptake-via-klf4-hcp1-signaling-pathway-in-hippocampus-neurons
#13
Hongxia Li, Caixia Zhang, Hui Shen, Zhilei Shen, Lusha Wu, Fengfeng Mo, Min Li
Iron overload has attracted much attention because of its adverse effect in increasing the risk of developing several neurodegenerative disorders. Under various pathologic conditions, a lot of heme are released. The aggregation of heme is more neurotoxic than that of iron released from the heme breakdown. Our previous studies demonstrated that psychological stress (PS) is a risk factor of cerebral iron metabolism disorders, thus causing iron accumulation in rat brains. In the present study, we found PS could increase heme uptake via heme carrier protein 1 (HCP1) in rat brains...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720825/non-motor-features-of-parkinson-disease
#14
Anthony H V Schapira, K Ray Chaudhuri, Peter Jenner
This corrects the article DOI: 10.1038/nrn.2017.62.
August 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/28720718/phosphorylation-of-amyloid-precursor-protein-by-mutant-lrrk2-promotes-aicd-activity-and-neurotoxicity-in-parkinson-s-disease
#15
Zhong-Can Chen, Wei Zhang, Ling-Ling Chua, Chou Chai, Rong Li, Lin Lin, Zhen Cao, Dario C Angeles, Lawrence W Stanton, Jian-He Peng, Zhi-Dong Zhou, Kah-Leong Lim, Li Zeng, Eng-King Tan
Mutations in LRRK2, which encodes leucine-rich repeat kinase 2, are the most common genetic cause of familial and sporadic Parkinson's disease (PD), a degenerative disease of the central nervous system that causes impaired motor function and, in advanced stages, dementia. Dementia is a common symptom of another neurodegenerative disease, Alzheimer's disease, and research suggests that there may be pathophysiological and genetic links between the two diseases. Aggregates of β amyloid [a protein produced through cleavage of amyloid precursor protein (APP)] are seen in both diseases and in PD patients carrying G2019S-mutant LRRK2...
July 18, 2017: Science Signaling
https://www.readbyqxmd.com/read/28720127/parasomnia-overlap-disorder-parkinson-s-disease-and-subthalamic-deep-brain-stimulation-three-case-reports
#16
Panagiotis Bargiotas, Julia Muellner, W M Michael Schuepbach, Claudio L Bassetti
BACKGROUND: Parasomnia overlap disorder (POD) is a distinct parasomnia and characterized by concomitant manifestation of rapid-eye-movement (REM)- and non-REM (NREM)-parasomnias. Although not uncommon among patients with Parkinson's disease, POD is often under-investigated. CASE PRESENTATION: This is the first report of patients with PD and features of POD that underwent deep brain stimulation. Our patients exhibited different outcomes of POD features after subthalamic deep brain stimulation...
July 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28719842/spatiotemporal-gait-changes-with-use-of-an-arm-swing-cueing-device-in-people-with-parkinson-s-disease
#17
Elizabeth Thompson, Peter Agada, W Geoffrey Wright, Hendrik Reimann, John Jeka
Impaired arm swing is a common motor symptom of Parkinson's disease (PD), and correlates with other gait impairments and increased risk of falls. Studies suggest that arm swing is not merely a passive consequence of trunk rotation during walking, but an active component of gait. Thus, techniques to enhance arm swing may improve gait characteristics. There is currently no portable device to measure arm swing and deliver immediate cues for larger movement. Here we test report pilot testing of such a device, ArmSense (patented), using a crossover repeated-measures design...
July 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28719359/levodopa-in-parkinson-s-disease-a-review-of-population-pharmacokinetics-pharmacodynamics-analysis
#18
Amélie Marsot, Romain Guilhaumou, Jean Philippe Azulay, Olivier Blin
BACKGROUND: Parkinson's disease is the second most common neurodegenerative disorder after Alzheimer's disease. Although levodopa remains the single effective agent in the management of Parkinson's disease, the accurate determination of this optimal dosage is complicated by marked between-subject and between-occasion variability in this population.  This review presents a synthesis of the population pharmacokinetic and pharmacodynamic models of levodopa described in Parkinson's disease...
2017: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28717970/prostaglandin-ep2-receptors-mediate-mesenchymal-stromal-cell-neuroprotective-effects-on-dopaminergic-neurons
#19
Juan Andrés Parga, María García-Garrote, Salvador Martínez, Ángel Raya, José Luis Labandeira-García, Jannette Rodríguez-Pallares
Mesenchymal stromal cells (MSCs) have been shown to have useful properties for cell therapy and have been proposed for treatment of neurodegenerative diseases, including Parkinson's disease. However, the mechanisms involved in recovering dopaminergic neurons are not clear. The present study aims to evaluate the pathways and molecules involved in the neuroprotective effect of MSCs. We analyzed the viability of dopaminergic cells from different sources in response to conditioned medium derived from bone marrow MSC (MSC-CM)...
July 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28717417/analysis-of-extracellular-rna-in-cerebrospinal-fluid
#20
Julie A Saugstad, Theresa A Lusardi, Kendall R Van Keuren-Jensen, Jay I Phillips, Babett Lind, Christina A Harrington, Trevor J McFarland, Amanda L Courtright, Rebecca A Reiman, Ashish S Yeri, M Yashar S Kalani, P David Adelson, Jorge Arango, John P Nolan, Erika Duggan, Karen Messer, Johnny C Akers, Douglas R Galasko, Joseph F Quinn, Bob S Carter, Fred H Hochberg
We examined the extracellular vesicle (EV) and RNA composition of pooled normal cerebrospinal fluid (CSF) samples and CSF from five major neurological disorders: Alzheimer's disease (AD), Parkinson's disease (PD), low-grade glioma (LGG), glioblastoma multiforme (GBM), and subarachnoid haemorrhage (SAH), representing neurodegenerative disease, cancer, and severe acute brain injury. We evaluated: (I) size and quantity of EVs by nanoparticle tracking analysis (NTA) and vesicle flow cytometry (VFC), (II) RNA yield and purity using four RNA isolation kits, (III) replication of RNA yields within and between laboratories, and (IV) composition of total and EV RNAs by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and RNA sequencing (RNASeq)...
2017: Journal of Extracellular Vesicles
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