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https://www.readbyqxmd.com/read/28814041/assessing-bradykinesia-in-parkinson-s-disease-using-gyroscope-signals
#1
S Summa, J Tosi, F Taffoni, L Di Biase, M Marano, A Cascio Rizzo, M Tombini, G Di Pino, D Formica
Parkinson's disease (PD) is a neurodegenerative brain disorder that slowly brings on the dopaminergic neurons death. The depletion of the dopaminergic signal causes the onset of motor symptoms such as tremor, bradykinesia and rigidity. Usually, neurologists regularly monitor motor symptoms and motor fluctuations using the MDS-UPDRS part III clinical scale. Nevertheless, to have a more objective and quantitative evaluation, it is possible to assess the cardinal motor symptoms of PD using wearable sensors and portable robotic devices...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814034/automated-assessment-of-symptom-severity-changes-during-deep-brain-stimulation-dbs-therapy-for-parkinson-s-disease
#2
Paolo Angeles, Yen Tai, Nicola Pavese, Samuel Wilson, Ravi Vaidyanathan
Deep brain stimulation (DBS) is currently being used as a treatment for symptoms of Parkinson's disease (PD). Tracking symptom severity progression and deciding the optimal stimulation parameters for people with PD is extremely difficult. This study presents a sensor system that can quantify the three cardinal motor symptoms of PD - rigidity, bradykinesia and tremor. The first phase of this study assesses whether data recorded from the system during physical examinations can be used to correlate to clinician's severity score using supervised machine learning (ML) models...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813782/urea-cycle-pathway-targeted-therapeutic-action-of-naringin-against-ammonium-chloride-induced-hyperammonemic-rats
#3
Arumugam Ramakrishnan, Natesan Vijayakumar
Ammonia is a well-known neurotoxin that causes liver disease and urea cycle disorder. Excessive ammonia content in the blood leads to hyperammonemic condition and affects both excitatory and inhibitory neurotransmission including brain edema and coma. Naringin, a plant bioflavonoid present in various citrus fruits and mainly extracted from the grape fruit. This study was designed to assess the protective effect of naringin on ammonium chloride (NH4Cl) induced hyperammonemic rats. Experimental hyperammonemia was induced by intraperitoneal injections (i...
August 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28813475/evaluation-of-the-adaptogenic-potential-exerted-by-ginsenosides-rb1-and-rg1-against-oxidative-stress-mediated-neurotoxicity-in-an-in-vitro-neuronal-model
#4
Carlos Fernández-Moriano, Elena González-Burgos, Irene Iglesias, Rafael Lozano, M Pilar Gómez-Serranillos
BACKGROUND: Ginseng (Panax sp.) is a drug with multiple pharmacological actions that has been largely used in traditional medicines for the treatment of many health problems. In the therapy of neurodegenerative disorders, it has been employed due to its capacity to strengthen mental processes by enhancing cognitive performance and psychological function. Current work aimed at evaluating the adaptogenic potential of Rb1 and Rg1 against oxidative-stress mediated degeneration in a model of nervous cells...
2017: PloS One
https://www.readbyqxmd.com/read/28813460/mechanisms-for-pattern-specificity-of-deep-brain-stimulation-in-parkinson-s-disease
#5
Osvaldo Matías Velarde, Germán Mato, Damián Dellavale
Deep brain stimulation (DBS) has become a widely used technique for treating advanced stages of neurological and psychiatric illness. In the case of motor disorders related to basal ganglia (BG) dysfunction, several mechanisms of action for the DBS therapy have been identified which might be involved simultaneously or in sequence. However, the identification of a common key mechanism underlying the clinical relevant DBS configurations has remained elusive due to the inherent complexity related to the interaction between the electrical stimulation and the neural tissue, and the intricate circuital structure of the BG-thalamocortical network...
2017: PloS One
https://www.readbyqxmd.com/read/28813089/polyspecific-antibodies-without-persisting-antigen-in-multiple-sclerosis-neurolupus-and-guillain-barr%C3%A3-syndrome-immune-network-connectivity-in-chronic-diseases
#6
Hansotto Reiber
The polyspecific antibody synthesis in multiple sclerosis (MS) gained diagnostic relevance with the frequent combination of measles-, rubella- and varicella zoster antibodies (MRZ-antibody reaction) but their pathophysiological role remains unknown. This review connects the data for intrathecal polyspecific antibody synthesis in MS and neurolupus with observations in the blood of patients with Guillain-Barré syndrome (GBS). Simultaneously increased antibody and autoantibody titers in GBS blood samples indicate that the polyspecific antibodies are based on a general property of an immune network, supported by the deterministic day-to-day concentration variation of antibodies in normal blood...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28813079/diffusion-tensor-imaging-of-brain-white-matter-in-huntington-gene-mutation-individuals
#7
Roberta Arb Saba, James H Yared, Thomas M Doring, Med Phys, Vanderci Borges, Henrique Ballalai Ferraz
Objective: To evaluate the role of the involvement of white matter tracts in huntingtin gene mutation patients as a potential biomarker of the progression of the disease. Methods: We evaluated 34 participants (11 symptomatic huntingtin gene mutation, 12 presymptomatic huntingtin gene mutation, and 11 controls). We performed brain magnetic resonance imaging to assess white matter integrity using diffusion tensor imaging, with measurement of fractional anisotropy...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28813012/inhibitory-effect-of-lycopene-on-amyloid-%C3%AE-induced-apoptosis-in-neuronal-cells
#8
Sinwoo Hwang, Joo Weon Lim, Hyeyoung Kim
Alzheimer's disease (AD) is a fatal neurodegenerative disease. Brain amyloid-β deposition is a crucial feature of AD, causing neuronal cell death by inducing oxidative damage. Reactive oxygen species (ROS) activate NF-κB, which induces expression of Nucling. Nucling is a pro-apoptotic factor recruiting the apoptosome complex. Lycopene is an antioxidant protecting from oxidative stress-induced cell damage. We investigated whether lycopene inhibits amyloid-β-stimulated apoptosis through reducing ROS and inhibiting mitochondrial dysfunction and NF-κB-mediated Nucling expression in neuronal SH-SY5Y cells...
August 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28812474/protective-effect-of-raisin-currant-against-spatial-memory-impairment-and-oxidative-stress-in-alzheimer-disease-model
#9
Mohammad Gol, Davoud Ghorbanian, Nabiollah Soltanpour, Jamshid Faraji, Mohsen Pourghasem
OBJECTIVES: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive pathological changes of the brain. A number of studies demonstrated compelling evidence of the importance of oxidative processes in AD pathogenesis. Raisin contains polyphenol, phenolic acid, and tannin compounds, which have antioxidant and anti-inflammatory properties. The present study was aimed to evaluate the protective effect of raisin on neurobehavioral and histological changes in rats with Alzheimer...
August 16, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28812438/acute-formaldehyde-exposure-induced-early-alzheimer-like-changes-in-mouse-brain
#10
Xudong Liu, Yuchao Zhang, Ruliu Wu, Meng Ye, Yuqing Zhao, Jun Kang, Ping Ma, Jinquan Li, Xu Yang
Alzheimer's disease (AD) is a serious, common, global disease, yet its etiology and pathogenesis are incompletely understood. Although an association between AD and exposure to air pollutants has been discussed, the effects of pollutants on the functioning of the brain remain unclear. The indoor environment is where exposure to formaldehyde (FA) can occur. Whether exposure to FA contributes to the development of AD needs to be investigated. To determine the objective, C57BL/6 mice were exposed daily to FA (0, 0...
August 16, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28812405/simple-screening-tools-predict-death-and-cardiovascular-events-in-patients-with-rheumatic-disease
#11
M Breunig, S Kleinert, S Lehmann, C Kneitz, M Feuchtenberger, H-P Tony, C E Angermann, G Ertl, S Störk
OBJECTIVES: Patients with rheumatic disease (RD) have an increased mortality risk compared with the general population, mainly due to cardiovascular disease (CVD). We aimed to identify patients at high risk of CVD and mortality by comparing three screening tools suitable for clinical practice. METHOD: In this prospective, single-centre study, consecutive patients with rheumatoid arthritis (RA), systemic autoimmune disease (SAI), or spondyloarthritides (SpA) including psoriatic arthritis underwent a comprehensive cardiovascular risk assessment...
August 16, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28812276/arundic-acid-increases-expression-and-function-of-astrocytic-glutamate-transporter-eaat1-via-the-erk-akt-and-nf-%C3%AE%C2%BAb-pathways
#12
Pratap Karki, Peter Hong, James Johnson, Edward Pajarillo, Deok-Soo Son, Michael Aschner, Eunsook Y Lee
Glutamate is the major excitatory neurotransmitter in the brain, but excessive synaptic glutamate must be removed to prevent excitotoxic injury and death. Two astrocytic glutamate transporters, excitatory amino acid transporter (EAAT) 1 and 2, play a major role in eliminating excess glutamate from the synapse. Dysregulation of EAAT1 contributes to the pathogenesis of multiple neurological disorders, such as Alzheimer's disease (AD), ataxia, traumatic brain injuries, and glaucoma. In the present study, we investigated the effect of arundic acid on EAAT1 to determine its efficacy in enhancing the expression and function of EAAT1, and its possible mechanisms of action...
August 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28812263/molecular-basis-of-oxytocin-receptor-signalling-in-the-brain-what-we-know-and-what-we-need-to-know
#13
Marta Busnelli, Bice Chini
Oxytocin (OT), a hypothalamic neuropeptide involved in regulating the social behaviour of all vertebrates, has been proposed as a treatment for a number of neuropsychiatric disorders characterised by deficits in the social domain. Over the last few decades, advances focused on understanding the social effects of OT and its role in physiological conditions and brain diseases, but much less has been done to clarify the molecular cascade of events involved in mediating such effects and in particular the cellular and molecular pharmacology of OT and its target receptor (OTR) in neuronal and glial cells...
August 16, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28812237/pharmacological-effects-on-ceroid-lipofuscin-and-neuronal-structure-in-cln3-%C3%A2-ex7-8-mouse-brain-cultures
#14
Douglas E Brenneman, David A Pearce, Attila Kovacs, Shawn DeFrees
Juvenile Batten disease (JBD) is an inherited disorder that is characterized by the development of blindness, seizures, and progressive motor, psychiatric, and cognitive impairment. A model of JBD expressing the predominant human mutation (Cln3 (∆ex7/8) ) has been explored. Dissociated brain cultures from Cln3 (∆ex7/8) knock-in mice were compared to wild type (WT) for effects on granules of ceroid lipofuscin (CL) and neuronal structure. Utilizing high content image analysis of CL granules identified with antibodies to mitochondrial ATP synthase subunit c or tripeptidyl peptidase-1, significant increases in the areas for both immunoreactive granules were observed in Cln3 (∆ex7/8) cultures in comparison to WT...
August 15, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28812231/the-neuroprotective-effect-of-conditioned-medium-from-human-adipose-derived-mesenchymal-stem-cells-is-impaired-by-n-acetyl-cysteine-supplementation
#15
Teodoro Palomares, María Cordero, Cristina Bruzos-Cidon, María Torrecilla, Luisa Ugedo, Ana Alonso-Varona
Oxidative stress is a common feature in neurodegenerative diseases associated with neuroinflammation, and therefore, has been proposed as a key target for novel therapies for these diseases. Recently, adipose-derived stem cell (ASC)-based cell therapy has emerged as a novel strategy for neuroprotection. In this study, we evaluate the therapeutic role of ASC-conditioned medium (ASC-CM) against H2O2-induced neurotoxicity in a new in vitro model of ec23/brain-derived neurotrophic factor (BDNF)-differentiated human SH-SY5Y neuron-like cells (SH-SY5Yd)...
August 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28812113/-pathophysiology-of-intracranial-injuries
#16
REVIEW
D Lahner, G Fritsch
Traumatic brain injury (TBI) constitutes a heterogeneous condition that affects the most complex organ of the human body. It is commonly classified by its location as focal injury (e.g. epidural hematoma) and diffuse injury (e.g. diffuse axonal shearing injury) as well as by primary and secondary tissue injury. Accordingly, direct mechanical force causes the primary insult. The tissue damage occurring afterwards is subsumed under the term secondary brain damage. Some of these processes are overlapping and include in the early phase local cerebral ischemia resulting in excitotoxicity, which together with the triggered neuroinflammatory cascade causes the formation of cerebral edema and ultimately increased intracranial pressure once the intracranial compliance is exhausted...
August 15, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28812093/a-convenient-approach-to-facilitate-monitoring-gaucher-disease-progression-and-therapeutic-response
#17
Wujuan Zhang, Melissa Oehrle, Carlos E Prada, Ida Vanessa D Schwartz, Somchai Chutipongtanate, Duangrurdee Wattanasirichaigoon, Venette Inskeep, Mei Dai, Dao Pan, Ying Sun, Kenneth D R Setchell
Gaucher disease (GD) is caused by mutations on the GBA1 gene leading to deficiency in acid β-glucosidase (GCase) and subsequent accumulation of its substrates, glucosylceramide (GlcC) and glucosylsphingosine (GlcS). GlcS in plasma has been proposed as a highly sensitive and specific biomarker for the diagnosis of GD and for monitoring disease progression and response to therapy. Here we report a novel robust and accurate hydrophilic interaction liquid chromatography tandem mass spectrometric method (HILIC-MS/MS) for the direct measurement of glucosylsphingosine (GlcS) in dried plasma spots (DPS)...
August 16, 2017: Analyst
https://www.readbyqxmd.com/read/28812049/importance-of-adiponectin-activity-in-the-pathogenesis-of-alzheimer-s-disease
#18
REVIEW
Masaaki Waragai, Gilbert Ho, Yoshiki Takamatsu, Kazunari Sekiyama, Shuei Sugama, Takato Takenouchi, Eliezer Masliah, Makoto Hashimoto
A recent study suggested that insulin resistance may play a central role in the pathogenesis of Alzheimer's disease (AD). In this regard, it is of note that upregulation of plasma adiponectin (APN), a benign adipokine that sensitizes the insulin receptor signaling pathway and suppresses inflammation, has recently been associated with the severities of amyloid deposits and cognitive deficits in the elderly, suggesting that APN may enhance the risk of AD. These results are unanticipated because AD has been linked to type II diabetes and other metabolic disorders in which hypoadiponectinemia has been firmly established, and because APN ameliorated neuropathological features in a mouse model of neurodegeneration...
August 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28812048/sensorimotor-rhythm-neurofeedback-as-adjunct-therapy-for-parkinson-s-disease
#19
Ingrid H C H M Philippens, Jacqueline A Wubben, Raymond A P Vanwersch, Dave L Estevao, Peter A Tass
Neurofeedback may enhance compensatory brain mechanisms. EEG-based sensorimotor rhythm neurofeedback training was suggested to be beneficial in Parkinson's disease. In a placebo-controlled study in parkinsonian nonhuman primates we here show that sensorimotor rhythm neurofeedback training reduces MPTP-induced parkinsonian symptoms and both ON and OFF scores during classical L-DOPA treatment. Our findings encourage further development of sensorimotor rhythm neurofeedback training as adjunct therapy for Parkinson's disease which might help reduce L-DOPA-induced side effects...
August 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28812008/evaluation-of-adrenal-function-in-nonhospitalized-patients-with-cirrhosis
#20
Maryam Moini, Mitra Yazdani Sarvestani, Mesbah Shams, Masood Nomovi
BACKGROUND: Patients with cirrhosis and advancing hepatic insufficiency may show various degrees of other organ malfunction, including brain, kidney, and lung. Several studies have also shown a high prevalence of adrenal insufficiency in cirrhotic patients that may cause hemodynamic instability. MATERIALS AND METHODS: In this study we prospectively evaluated adrenal function in a population of nonhospitalized cirrhotic patients. Categorization of liver disease severity was done according to model for end-stage liver disease (MELD) score...
2017: Canadian Journal of Gastroenterology & Hepatology
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