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https://www.readbyqxmd.com/read/28214264/identification-of-candidate-cerebrospinal-fluid-biomarkers-in-parkinsonism-using-quantitative-proteomics
#1
N K Magdalinou, A J Noyce, R Pinto, E Lindstrom, J Holmén-Larsson, M Holtta, K Blennow, H R Morris, T Skillbäck, T T Warner, A J Lees, I Pike, M Ward, H Zetterberg, J Gobom
INTRODUCTION: Neurodegenerative parkinsonian syndromes have significant clinical and pathological overlap, making early diagnosis difficult. Cerebrospinal fluid (CSF) biomarkers may aid the differentiation of these disorders, but other than α-synuclein and neurofilament light chain protein, which have limited diagnostic power, specific protein biomarkers remain elusive. OBJECTIVES: To study disease mechanisms and identify possible CSF diagnostic biomarkers through discovery proteomics, which discriminate parkinsonian syndromes from healthy controls...
January 31, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28212331/analysis-of-epidermal-growth-factor-receptor-related-gene-expression-changes-in-a-cellular-and-animal-model-of-parkinson-s-disease
#2
In-Su Kim, Sushruta Koppula, Shin-Young Park, Dong-Kug Choi
We employed transcriptome analysis of epidermal growth factor receptor related gene expression changes in cellular and animal models of Parkinson's disease (PD). We used a well-known Parkinsonian toxin 1-methyl-4-phenylpyridine (MPP⁺) to induce neuronal apoptosis in the human neuroblastoma SH-SY5Y cell line. The MPP⁺-treatment of SH-SY5Y cells was capable of inducing neuro-apoptosis, but it remains unclear what kinds of transcriptional genes are affected by MPP⁺ toxicity. Therefore the pathways that were significantly perturbed in MPP⁺ treated human neuroblastoma SH-SY5Y cells were identified based on genome-wide gene expression data at two time points (24 and 48 h)...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28210976/regenerative-medicine-for-parkinson-s-disease-using-differentiated-nerve-cells-derived-from-human-buccal-fat-pad-stem-cells
#3
Haruka Takahashi, Hiroshi Ishikawa, Akira Tanaka
The purpose of this study was to evaluate the utility of human adipose stem cells derived from the buccal fat pad (hBFP-ASCs) for nerve regeneration. Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive death of dopaminergic neurons. PD is a candidate disease for cell replacement therapy because it has no fundamental therapeutic methods. We examined the properties of neural-related cells induced from hBFP-ASCs as a cell source for PD treatment. hBFP-ASCs were cultured in neurogenic differentiation medium for about 2 weeks...
February 16, 2017: Human Cell
https://www.readbyqxmd.com/read/28192762/neural-mass-models-describing-possible-origin-of-the-excessive-beta-oscillations-correlated-with-parkinsonian-state
#4
Chen Liu, Yulin Zhu, Fei Liu, Jiang Wang, Huiyan Li, Bin Deng, Chris Fietkiewicz, Kenneth A Loparo
In Parkinson's disease, the enhanced beta rhythm is closely associated with akinesia/bradykinesia and rigidity. An increase in beta oscillations (12-35 Hz) within the basal ganglia (BG) nuclei does not proliferate throughout the cortico-basal ganglia loop in uniform fashion; rather it can be subdivided into two distinct frequency bands, i.e. the lower beta (12-20 Hz) and upper beta (21-35 Hz). A computational model of the excitatory and inhibitory neural network that focuses on the population properties is proposed to explore the mechanism underlying the pathological beta oscillations...
January 30, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28191785/impact-of-the-secretome-of-human-mesenchymal-stem-cells-on-brain-structure-and-animal-behavior-in-a-rat-model-of-parkinson-s-disease
#5
Fábio G Teixeira, Miguel M Carvalho, Krishna M Panchalingam, Ana J Rodrigues, Bárbara Mendes-Pinheiro, Sandra Anjo, Bruno Manadas, Leo A Behie, Nuno Sousa, António J Salgado
Research in the last decade strongly suggests that mesenchymal stem cell (MSC)-mediated therapeutic benefits are mainly due to their secretome, which has been proposed as a possible therapeutic tool for the treatment of Parkinson's disease (PD). Indeed, it has been shown that the MSC secretome increases neurogenesis and cell survival, and has numerous neuroprotective actions under different conditions. Additionally, using dynamic culturing conditions (through computer-controlled bioreactors) can further modulate the MSC secretome, thereby generating a more potent neurotrophic factor cocktail (i...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28190394/neuroprotective-effect-of-atremorine-in-an-experimental-model-of-parkinson%C3%A2-s-disease
#6
Ivan Carrera, Lucia Fernandez-Novoa, Carolina Sampedro, Ramon Cacabelos
Parkinsonian-like state was generated in mice by the administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) to study the effects of Atremorine in Parkinson's disease (PD) related neuropathology and behavior deficits. This devastating disease is caused by the progressive degeneration of dopaminergic neurons in the substantia nigra. Numerous therapeutic strategies have been developed to protect neuronal damage, although no effective treatment for PD has been validated yet. This study tested the preventive and therapeutic neuroprotective effect of Atremorine on MPTP parkinsonian mouse model...
February 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28186875/freezing-of-gait-detection-in-parkinson-s-disease-a-subject-independent-detector-using-anomaly-scores
#7
Thuy T Pham, Steven T Moore, Simon J G Lewis, Diep N Nguyen, Eryk Dutkiewicz, Andrew J Fuglevand, Alistair L McEwan, Philip H W Leong
Freezing of gait (FoG) is common in Parkinsonian gait and strongly relates to falls. Current clinical FoG assessments are patients' self-report diaries and experts' manual video analysis. Both are subjective and yield moderate reliability. Existing detection algorithms have been predominantly designed in subject-dependent settings. In this work, we aim to develop an automated FoG detector for subject-independent. After extracting highly relevant features, we apply anomaly detection techniques to detect FoG events...
February 7, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28186663/impaired-glutamate-release-in-gpe-astrocytes-disinhibits-striatopallidal-transmission-in-parkinsonian-mice
#8
Mina Ansari, Soheila Sobhani
No abstract text is available yet for this article.
February 10, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28186331/adult-motor-phenotype-differentiates-dravet-syndrome-from-lennox-gastaut-syndrome-and-links-scn1a-to-early-onset-parkinsonian-features
#9
Danah Aljaafari, Alfonso Fasano, Fábio A Nascimento, Anthony E Lang, Danielle M Andrade
Distinguishing adult patients with Lennox-Gastaut syndrome from those with Dravet syndrome is challenging. We have previously reported that patients with Dravet syndrome present a very peculiar motor phenotype. Here we sought to confirm that this association was not linked to the chronic use of antiepileptic drugs or the many lifetime seizures. To this aim, we studied 14 adult patients with Lennox-Gastaut syndrome and 14 adults with Dravet syndrome because both conditions share similar seizure severity. We found that antecollis and parkinsonian gait were significantly more common in the Dravet group, thus suggesting that these features are part of the Dravet syndrome adult phenotype...
February 10, 2017: Epilepsia
https://www.readbyqxmd.com/read/28181693/frontotemporal-lobar-degeneration-tdp-with-multiple-system-atrophy-phenocopy-syndrome
#10
Ana Luísa Sousa, Ricardo Taipa, Niall Quinn, Tamas Revesz, Manuel Melo Pires, Marina Magalhães
Multiple system atrophy (MSA) is a neurodegenerative disorder presenting with parkinsonism, cerebellar involvement, autonomic dysfunction and pyramidal signs (1). Two main clinical subtypes of MSA are recognized: a parkinsonian-type (MSA-P) associated with predominant nigrostriatal degeneration and a cerebellar-type (MSA-C) with predominant olivopontocerebellar atrophy. A 'definite' diagnosis requires pathological confirmation with demonstration of glial cytoplasmic inclusions comprising alpha-synuclein protein aggregates (1)...
February 9, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28179466/blood-based-nfl-a-biomarker-for-differential-diagnosis-of-parkinsonian-disorder
#11
Oskar Hansson, Shorena Janelidze, Sara Hall, Nadia Magdalinou, Andrew J Lees, Ulf Andreasson, Niklas Norgren, Jan Linder, Lars Forsgren, Radu Constantinescu, Henrik Zetterberg, Kaj Blennow
OBJECTIVE: To determine if blood neurofilament light chain (NfL) protein can discriminate between Parkinson disease (PD) and atypical parkinsonian disorders (APD) with equally high diagnostic accuracy as CSF NfL, and can therefore improve the diagnostic workup of parkinsonian disorders. METHODS: The study included 3 independent prospective cohorts: the Lund (n = 278) and London (n = 117) cohorts, comprising healthy controls and patients with PD, progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and multiple system atrophy (MSA), as well as an early disease cohort (n = 109) of patients with PD, PSP, MSA, or CBS with disease duration ≤3 years...
February 8, 2017: Neurology
https://www.readbyqxmd.com/read/28176275/reduced-activated-t-lymphocytes-cd4-cd25-and-plasma-levels-of-cytokines-in-parkinson-s-disease
#12
Natalia Pessoa Rocha, Frankcinéia Assis, Paula Luciana Scalzo, Érica Leandro Marciano Vieira, Izabela Guimarães Barbosa, Mariana Soares de Souza, Paulo Pereira Christo, Helton José Reis, Antonio Lucio Teixeira
Parkinson's disease (PD) is the second most common neurodegenerative disease. The cause of neurodegeneration in PD is not completely understood, and evidence has shown that inflammatory/immune changes may be involved in PD pathophysiology. Herein, we aimed to determine the profile of the peripheral immune system in patients with PD in comparison with controls. Forty patients with PD and 25 age- and gender-matched controls were enrolled in this study. From these, 23 PD patients and 21 controls were included in the immunophenotyping analyses...
February 7, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28160153/differential-behavioral-outcomes-following-neonatal-versus-fetal-human-retinal-pigment-epithelial-cell-striatal-implants-in-parkinsonian-rats
#13
Kaspar Russ, Joseph Flores, Tomasz Brudek, Doris J Doudet
Following the failure of a Phase II clinical study evaluating human retinal pigment epithelial (hRPE) cell implants as a potential treatment option for Parkinson's disease, speculation has centered on implant function and survival as possible contributors to the therapeutic outcomes. We recently reported that neonatal hRPE cells, similar to hRPE cells used in the Phase II clinical study, produced short-lived in vitro and limited in vivo trophic factors, which supports that assumption. We hypothesize that the switch from fetal to neonatal hRPE cells, between the Phase I and the Phase II clinical trial may be partly responsible for the later negative outcomes...
February 4, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28159316/-de-novo-consultation-evaluation-of-an-outpatient-s-clinic-dedicated-to-early-diagnosis-of-parkinsonian-syndromes
#14
J Ruggeri, L-L Mariani, S Aix, A-M Bonnet, F Cormier, J-C Corvol, P Dodet, D Grabli, A Hartmann, C Hubsch, L Lacomblez, E Roze, M-L Welter, Y Worbe, M Vidailhet, B Degos
INTRODUCTION: In the absence of specific clinical signs, imaging or biomarkers, the differential diagnosis of degenerative parkinsonian syndromes may be difficult at early stages of the disease. To reduce the risk of misdiagnosis or delayed diagnosis and referral to multiple medical centers at disease onset, easier access to expert centers should be available. To improve the initial care of parkinsonian patients, the Parkinson's disease Expert Center (PEC) at Pitié-Salpêtrière Academic Hospital has set up a specific outpatients clinic with short waiting times dedicated to the diagnosis of early Parkinson's disease and related disorders...
January 31, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28158197/rehabilitation-in-progressive-supranuclear-palsy-effectiveness-of-two-multidisciplinary-treatments
#15
Ilaria Clerici, Davide Ferrazzoli, Roberto Maestri, Fabiola Bossio, Ilaria Zivi, Margherita Canesi, Gianni Pezzoli, Giuseppe Frazzitta
BACKGROUND: to date, there are no medical or surgical treatments for progressive supranuclear palsy (PSP). It is possible to speculate that patients with PSP could benefit from rehabilitative treatments designed for Parkinson's disease, including the use of robot-assisted walking training. OBJECTIVE: to evaluate whether the use of the robotic device Lokomat® is superior in PSP patients to the use of treadmill with visual cues and auditory feedbacks (treadmill-plus) in the context of an aerobic, multidisciplinary, intensive, motor-cognitive and goal-based rehabilitation treatment (MIRT) conceived for Parkinsonian patients...
2017: PloS One
https://www.readbyqxmd.com/read/28157107/the-cross-sectional-area-of-paraspinal-muscles-predicts-the-efficacy-of-deep-drain-stimulation-for-camptocormia
#16
Waka Sakai, Shunya Nakane, Eiichirou Urasaki, Keisuke Toyoda, Eisaku Sadakata, Akiko Nagaishi, Takayasu Fukudome, Yuzo Yamakawa, Hidenori Matsuo
BACKGROUND: Camptocormia, a disturbance of posture, is a well-described clinical feature of PD and other parkinsonian syndromes. Previous reports have shown that DBS of the subthalamic nucleus (STN) or globus pallidus internus is effective in treating camptocormia. However, the efficacy of DBS for camptocormia varies. OBJECTIVE: To determine a clinical marker for selecting an appropriate therapy for camptocormia, a disabling manifestation of Parkinson's disease (PD) that has a variable response to systemic and local therapies...
January 30, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28153913/an-anatomically-resolved-mouse-brain-proteome-reveals-parkinson-disease-relevant-pathways
#17
Sung Yun Jung, Jong Min Choi, Maxime W C Rousseaux, Anna Malovannaya, Jean J Kim, Joachim Kutzera, Yi Wang, Yin Huang, Weimin Zhu, Suman Maity, Huda Yahya Zoghbi, Jun Qin
Here we present a mouse brain protein atlas that covers 17 surgically distinct neuroanatomical regions of the adult mouse brain, each less than 1mm3 in size. The protein expression levels are determined for 6,500 to 7,500 gene protein products from each region and over 12,000 gene protein products for the entire brain, documenting the physiological repertoire of mouse brain proteins in an anatomically resolved and comprehensive manner. We explored the utility of our spatially-defined protein profiling methods in a mouse model of Parkinson's disease (PD)...
February 2, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28151553/meta-analysis-of-dorsolateral-nigral-hyperintensity-on-magnetic-resonance-imaging-as-a-marker-for-parkinson-s-disease
#18
Philipp Mahlknecht, Florian Krismer, Werner Poewe, Klaus Seppi
BACKGROUND: Dorsolateral nigral hyperintensity on iron-sensitive magnetic resonance imaging (MRI) sequences seems to be a typical finding in Parkinson's disease (PD), but most studies have involved small samples and have had heterogeneous control populations. OBJECTIVES: The objective of this study was to perform a meta-analysis on dorsolateral nigral hyperintensity as an imaging marker for PD. METHODS: The methods included a systematic literature search and a hierarchical summary receiver operating characteristics curve approach...
February 2, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28150443/manual-mri-morphometry-in-parkinsonian-syndromes
#19
Leona Möller, Jan Kassubek, Martin Südmeyer, Rüdiger Hilker, Elke Hattingen, Karl Egger, Florian Amtage, Elmar H Pinkhardt, Gesine Respondek, Maria Stamelou, Franz Möller, Alfons Schnitzler, Wolfgang H Oertel, Susanne Knake, Hans-Jürgen Huppertz, Günter U Höglinger
BACKGROUND: Several morphometric magnetic resonance imaging parameters may serve for differential diagnosis of parkinsonism. The objective of this study was to identify which performs best in clinical routine. METHODS: We acquired multicentric magnetization-prepared rapid gradient echo sequences in patients with Parkinson's disease (n=204), progressive supranuclear palsy (n=106), multiple system atrophy-cerebellar, (n = 21); multiple system atrophy-parkinsonian (n = 60), and healthy controls (n = 73), performed manual planimetric measurements, and calculated receiver operator characteristics with leave-one-out cross-validation to propose cutoff values...
February 2, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28150432/molecular-imaging-to-track-parkinson-s-disease-and-atypical-parkinsonisms-new-imaging-frontiers
#20
REVIEW
Antonio P Strafella, Nicolaas I Bohnen, Joel S Perlmutter, David Eidelberg, Nicola Pavese, Thilo Van Eimeren, Paola Piccini, Marios Politis, Stephane Thobois, Roberto Ceravolo, Makoto Higuchi, Valtteri Kaasinen, Mario Masellis, M Cecilia Peralta, Ignacio Obeso, Jose Ángel Pineda-Pardo, Roberto Cilia, Benedicte Ballanger, Martin Niethammer, Jon A Stoessl
Molecular imaging has proven to be a powerful tool for investigation of parkinsonian disorders. One current challenge is to identify biomarkers of early changes that may predict the clinical trajectory of parkinsonian disorders. Exciting new tracer developments hold the potential for in vivo markers of underlying pathology. Herein, we provide an overview of molecular imaging advances and how these approaches help us to understand PD and atypical parkinsonisms. © 2016 International Parkinson and Movement Disorder Society...
February 2, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
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