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https://www.readbyqxmd.com/read/29684508/methylene-blue-ameliorates-olfactory-dysfunction-and-motor-deficits-in-a-chronic-mptp-probenecid-mouse-model-of-parkinson-s-disease
#1
K C Biju, Robert C Evans, Kripa Shrestha, Daniel C B Carlisle, Jonathan Gelfond, Robert A Clark
Mitochondrial dysfunction and oxidative stress are very prominent and early features in Parkinson's disease (PD) and in animal models of PD. Thus, antioxidant therapy for PD has been proposed, but in clinical trials such strategies have met with very limited success. Methylene blue (MB), a small-molecule synthetic heterocyclic organic compound that acts as a renewable electron cycler in the mitochondrial electron transport chain, manifesting robust antioxidant and cell energetics-enhancing properties, has recently been shown to have significant beneficial effects in reducing nigrostriatal dopaminergic loss and motor impairment in acute toxin models of PD...
April 20, 2018: Neuroscience
https://www.readbyqxmd.com/read/29684335/emergence-of-breath-testing-as-a-new-non-invasive-diagnostic-modality-for-neurodegenerative-diseases
#2
REVIEW
N Siva Subramaniam, C S Bawden, H Waldvogel, R M L Faull, G S Howarth, R G Snell
Neurodegenerative diseases (NDDs) are incapacitating disorders that result in progressive motor and cognitive impairment. These disease include Alzheimer's disease the most common cause of dementia, frontotemporal dementia, amyotrophic lateral sclerosis, dementia with Lewy bodies, Parkinson's, Huntington's, Friedreich's ataxia, and prion disease. Dementia causing NDDs impose a high social and economic burden on communities around the world. Rapid growth in knowledge regarding the pathogenic mechanisms and disease-associated biomarkers of these diseases in the past few decades have accelerated the development of new diagnostic methods and therapeutic opportunities...
April 20, 2018: Brain Research
https://www.readbyqxmd.com/read/29681884/glutathione-s-transferase-alpha-4-prevents-dopamine-neurodegeneration-in-a-rat-alpha-synuclein-model-of-parkinson-s-disease
#3
Michael Jewett, Elna Dickson, Kajsa Brolin, Matilde Negrini, Itzia Jimenez-Ferrer, Maria Swanberg
Parkinson's disease (PD) is a common, progressive neurodegenerative disease, which typically presents itself with a range of motor symptoms, like resting tremor, bradykinesia, and rigidity, but also non-motor symptoms such as fatigue, constipation, and sleep disturbance. Neuropathologically, PD is characterized by loss of dopaminergic cells in the substantia nigra pars compacta (SNpc) and Lewy bodies, neuronal inclusions containing α-synuclein (α-syn). Mutations and copy number variations of SNCA , the gene encoding α-syn, are linked to familial PD and common SNCA gene variants are associated to idiopathic PD...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29680921/neurosurgical-treatment-of-gangliogliomas-in-children-and-adolescents-long-term-follow-up-of-a-single-institution-series-of-32-patients
#4
Tryggve Lundar, Bernt Johan Due-Tønnessen, Radek Fric, Arild Egge, Bård Krossnes, Paulina Due-Tønnessen, Einar Stensvold, Petter Brandal
OBJECT: The object of this study was to delineate long-term results of the surgical treatment of pediatric tumors classified as ganglioglioma or gangliocytoma. METHODS: A cohort of consecutive patients 19 years or younger who had undergone primary resection of CNS tumors during the years 1980-2016 at a single institution were reviewed in this retrospective study of surgical morbidity, mortality, and academic achievement and/or work participation. Gross motor function and activities of daily living were scored using the Barthel Index (BI)...
April 22, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29680437/treatment-of-restless-legs-syndrome-willis-ekbom-disease-with-the-non-selective-ent1-ent2-inhibitor-dipyridamole-testing-the-adenosine-hypothesis
#5
Diego Garcia-Borreguero, Xavier Guitart, Celia Garcia Malo, Irene Cano-Pumarega, Juan José Granizo, Sergi Ferré
OBJECTIVES: Recent animal models of restless legs syndrome (RLS) suggest that brain iron deficiency is associated with a hypoadenosinergic state, with downregulation of adenosine A1 receptors (A1R) in the striatum and cortex. We hypothesized that an increase in extracellular adenosine induced by inhibitors of adenosine transporters, such as the non-selective ENT1/ENT2 inhibitor dipyridamole, would result in an improvement in RLS symptoms. METHODS: In a prospective two-month open-label, non-placebo controlled clinical trial, 15 untreated idiopathic RLS patients began treatment with 100 mg dipyridamole (with uptitration to 400 mg if necessary)...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29679991/empirical-evidence-for-discrete-neurocognitive-subgroups-in-patients-with-non-psychotic-major-depressive-disorder-clinical-implications
#6
Shenghong Pu, Takamasa Noda, Shiori Setoyama, Kazuyuki Nakagome
BACKGROUND: Neuropsychological deficits are present across various cognitive domains in major depressive disorder (MDD). However, a consistent and specific profile of neuropsychological abnormalities has not yet been established. METHODS: We assessed cognition in 170 patients with non-psychotic MDD using the Brief Assessment of Cognition in Schizophrenia and the scores were compared with those of 42 patients with schizophrenia as a reference for severity of cognitive impairment...
April 22, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29674987/the-complex-interplay-between-depression-anxiety-and-executive-functioning-insights-from-the-ecas-in-a-large-als-population
#7
Laura Carelli, Federica Solca, Andrea Faini, Fabiana Madotto, Annalisa Lafronza, Alessia Monti, Stefano Zago, Alberto Doretti, Andrea Ciammola, Nicola Ticozzi, Vincenzo Silani, Barbara Poletti
Introduction: The observed association between depressive symptoms and cognitive performances has not been previously clarified in patients with amyotrophic lateral sclerosis (pALS). In fact, the use of cognitive measures often not accommodating for motor disability has led to heterogeneous and not conclusive findings about this issue. The aim of the present study was to evaluate the relationship between cognitive and depressive/anxiety symptoms by means of the recently developed Edinburgh Cognitive and Behavioral ALS Screen (ECAS), a brief assessment specifically designed for pALS...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29672326/long-term-outcome-of-adenosine-a2a-receptor-antagonist-on-lower-urinary-tract-symptoms-in-male-parkinson-disease-patients
#8
Takeya Kitta, Ichiro Yabe, Yukiko Kanno, Madoka Higuchi, Mifuka Ouchi, Mio Togo, Kimihiko Moriya, Ikuko Takahashi, Masaaki Matsushima, Hidenao Sasaki, Nobuo Shinohara
OBJECTIVES: In addition to motor symptoms, bladder dysfunction is a major clinical issue in patients with Parkinson disease (PD). Istradefylline is adenosine A2A receptor antagonist approved for PD patients with wearing-off symptoms. The aim of this study was to determine the long-term effects of istradefylline on lower urinary tract symptoms (LUTSs) in PD patients. METHODS: We enrolled 14 male PD patients. The mean age of patients was 73 years (61-77 years), the Hoehn-Yahr stage was 2 (2-3), and disease duration was 9 years (3-28 years)...
April 18, 2018: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/29670572/myasthenia-gravis-with-thymoma-manifesting-as-achr-ab-positive-distinct-bulbar-palsy-accompanied-by-dysgeusia-a-case-series-and-review-of-literature
#9
Kai Zhu, Jiaxin Chen, Jingjing Li, Haiyan Wang, Xin Huang, Yan Li, Huiyu Feng
In this review, we summarized three cases of myasthenia gravis (MG) with taste disorder and describe their clinical features in detail. Three MG patients presented with significant bulbar palsy symptoms, high AChR-Ab titers, and negative MuSK-Ab, were diagnosed with thymoma. Furthermore, we observed that dysgeusia could manifest earlier than the occurrence of typical MG symptoms, even predict a MG relapse or a myasthenic crisis in the course of MG. We believe that dysgeusia is a non-motor symptom of MG, which especially exists in MG patients with thymoma and serious bulbar palsy...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670566/non-motor-symptoms-of-parkinson-s-disease-and-their-impact-on-quality-of-life-in-a-cohort-of-moroccan-patients
#10
Houyam Tibar, Khalil El Bayad, Ahmed Bouhouche, El Hachmia Ait Ben Haddou, Ali Benomar, Mohamed Yahyaoui, Abdelhamid Benazzouz, Wafa Regragui
Background: Non-motor symptoms (NMSs) are a real burden in Parkinson's disease (PD). They may appear in early pre-symptomatic stage as well as throughout the disease course. However, their relationship with the deterioration of the patient's quality of life (QoL) is still under debate. This study aimed to investigate the prevalence of NMSs and their impact on the QoL in a cohort of Moroccan patients. Methods: We carried out a cross-transactional study, where a total of 117 patients were submitted to a structured clinical interview and examination investigating motor and NMSs based on common and conventional scales...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29668904/a-whole-brain-longitudinal-study-in-the-yac128-mouse-model-of-huntington-s-disease-shows-distinct-trajectories-of-neurochemical-structural-connectivity-and-volumetric-changes
#11
Lorena I Petrella, João M Castelhano, Mario Ribeiro, José V Sereno, Sónia I Gonçalves, Mário N Laço, Michael R Hayden, Ana C Rego, Miguel Castelo-Branco
Huntington's disease (HD) is a neurodegenerative disorder causing cognitive and motor impairments, evolving to death within 15-20 years after symptom onset. We previously established a mouse model with the entire human HD gene containing 128 CAG repeats (YAC128) which accurately recapitulates the natural history of the human disease. Defined time points in this natural history enable the understanding of longitudinal trajectories from the neurochemical and structural points of view using non-invasive high-resolution multimodal imaging...
April 16, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29665080/clustering-of-motor-and-nonmotor-traits-in-leucine-rich-repeat-kinase-2-g2019s-parkinson-s-disease-nonparkinsonian-relatives-a-multicenter-family-study
#12
Tiago A Mestre, Claustre Pont-Sunyer, Farah Kausar, Naomi P Visanji, Taneera Ghate, Barbara S Connolly, Carmen Gasca-Salas, Drew S Kern, Jennifer Jain, Elizabeth J Slow, Achinoam Faust-Socher, Meike Kasten, Pettarusp M Wadia, Cindy Zadikoff, Prakash Kumar, Ronald M de Bie, Teri Thomsen, Anthony E Lang, Birgitt Schüle, Christine Klein, Eduardo Tolosa, Connie Marras
OBJECTIVES: The objective of this study was to determine phenotypic features that differentiate nonparkinsonian first-degree relatives of PD leucine-rich repeat kinase 2 (LRRK2) G2019S multiplex families, regardless of carrier status, from healthy controls because nonparkinsonian individuals in multiplex families seem to share a propensity to present neurological features. METHODS: We included nonparkinsonian first-degree relatives of LRRK2 G2019S familial PD cases and unrelated healthy controls participating in established multiplex family LRRK2 cohorts...
April 17, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29664059/excessive-daytime-sleepiness-in-parkinson-s-disease-clinical-implications-and-management
#13
REVIEW
Yun Shen, Jun-Ying Huang, Jie Li, Chun-Feng Liu
Objective: Excessive daytime sleepiness (EDS) is one of the most common sleep abnormalities in patients with Parkinson's disease (PD), yet its multifactorial etiology complicates its treatment. This review summarized recent studies on the epidemiology, etiology, clinical implications, associated features, and evaluation of EDS in PD. The efficacy of pharmacologic and non-pharmacologic treatments for EDS in PD was also reviewed. Data Sources: English language articles indexed in PubMed and Cochrane databases and Chinese-language papers indexed in Wanfang and National Knowledge Infrastructure databases that were published between January 1987 and November 2017 were located using the following search terms: "sleepiness", "sleep and Parkinson's disease", and "Parkinson's disease and treatment"...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29664049/increased-serum-cystatin-c-in-early-parkinson-s-disease-with-objective-sleep-disturbances
#14
Kang-Ping Xiong, Yong-Ping Dai, Jing Chen, Jin-Min Xu, Yi Wang, Ping Feng, Shou-Jiang You, Chun-Feng Liu
Background: Sleep disturbance is one of the major non-motor symptoms which cause the disability of Parkinson's disease (PD) patients. Cystatin C (CysC) is a more sensitive biomarker than serum creatinine or estimated glomerular filtration rate. Previous studies have reported altered CysC levels in neurodegenerative disorders and sleep disorders. This study aimed to explore the correlations of serum CysC levels and objective sleep disturbances in early PD. Methods: We recruited 106 early PD patients and 146 age- and sex-matched controls...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29663852/decreased-sleep-quality-in-parkinson-s-patients-is-associated-with-higher-anxiety-and-depression-prevalence-and-severity-and-correlates-with-pain-intensity-and-quality
#15
Abdul Qayyum Rana, Abdul Rehman M Qureshi, Yazan Shamli Oghli, Yosuf Saqib, Bilal Mohammed, Zainab Sarfraz, Ruqqiyah Rana
OBJECTIVE: Pain, poor sleep quality, restless legs syndrome (RLS), and other symptoms are frequently reported by patients with Parkinson's disease (PD). However, the impact that pain severity and interference has on non-motor symptoms (NMS) has not been extensively studied. The objective of the present study is to explore the relationship between sleep quality in PD to pain and other NMS that affect quality of life. METHODS: The study included 100 PD patients and 100 age and gender-matched controls assessed for pain severity and pain interference using the Brief Pain Inventory and sleep quality using the Pittsburgh Sleep Quality Index...
April 17, 2018: Neurological Research
https://www.readbyqxmd.com/read/29657957/the-effect-of-deep-brain-stimulation-therapy-on-fear-related-capture-of-attention-in-parkinson-s-disease-and-essential-tremor-a-comparison-to-healthy-individuals
#16
Corrie R Camalier, Maureen McHugo, David H Zald, Joseph S Neimat
In addition to motor symptoms, Parkinson's disease (PD) involves significant non-motor sequelae, including disruptions in cognitive and emotional processing. Fear recognition appears to be affected both by the course of the disease and by a common interventional therapy, deep brain stimulation of the subthalamic nucleus (STN-DBS). Here, we examined if these effects extend to other aspects of emotional processing, such as attentional capture by negative emotional stimuli. Performance on an emotional attentional blink (EAB) paradigm, a common paradigm used to study emotional capture of attention, was examined in a cohort of individuals with PD, both on and off STN-DBS therapy (n=20)...
2018: Journal of Neurological Disorders
https://www.readbyqxmd.com/read/29656343/lateralisation-in-parkinson-disease
#17
REVIEW
P Riederer, K A Jellinger, P Kolber, G Hipp, J Sian-Hülsmann, R Krüger
Asymmetry of dopaminergic neurodegeneration and subsequent lateralisation of motor symptoms are distinctive features of Parkinson's disease compared to other forms of neurodegenerative or symptomatic parkinsonism. Even 200 years after the first description of the disease, the underlying causes for this striking clinicopathological feature are not yet fully understood. There is increasing evidence that lateralisation of disease is due to a complex interplay of hereditary and environmental factors that are reflected not only in the concept of dominant hemispheres and handedness but also in specific susceptibilities of neuronal subpopulations within the substantia nigra...
April 14, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29655587/short-term-quality-of-life-after-subthalamic-stimulation-depends-on-non-motor-symptoms-in-parkinson-s-disease
#18
Haidar Salimi Dafsari, Luisa Weiß, Monty Silverdale, Alexandra Rizos, Prashanth Reddy, Keyoumars Ashkan, Julian Evans, Paul Reker, Jan Niklas Petry-Schmelzer, Michael Samuel, Veerle Visser-Vandewalle, Angelo Antonini, Pablo Martinez-Martin, K Ray-Chaudhuri, Lars Timmermann
BACKGROUND: Subthalamic nucleus (STN) deep brain stimulation (DBS) improves quality of life (QoL), motor, and non-motor symptoms (NMS) in advanced Parkinson's disease (PD). However, considerable inter-individual variability has been observed for QoL outcome. HYPOTHESIS: We hypothesized that demographic and preoperative NMS characteristics can predict postoperative QoL outcome. METHODS: In this ongoing, prospective, multicenter study (Cologne, Manchester, London) including 88 patients, we collected the following scales preoperatively and on follow-up 6 months postoperatively: PDQuestionnaire-8 (PDQ-8), NMSScale (NMSS), NMSQuestionnaire (NMSQ), Scales for Outcomes in PD (SCOPA)-motor examination, -complications, and -activities of daily living, levodopa equivalent daily dose...
February 24, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29655586/non-motor-outcomes-of-subthalamic-stimulation-in-parkinson-s-disease-depend-on-location-of-active-contacts
#19
Haidar Salimi Dafsari, Jan Niklas Petry-Schmelzer, K Ray-Chaudhuri, Keyoumars Ashkan, Luca Weis, Till A Dembek, Michael Samuel, Alexandra Rizos, Monty Silverdale, Michael T Barbe, Gereon R Fink, Julian Evans, Pablo Martinez-Martin, Angelo Antonini, Veerle Visser-Vandewalle, Lars Timmermann
BACKGROUND: Subthalamic nucleus (STN) deep brain stimulation (DBS) improves quality of life (QoL), motor, and non-motor symptoms (NMS) in Parkinson's disease (PD). Few studies have investigated the influence of the location of neurostimulation on NMS. OBJECTIVE: To investigate the impact of active contact location on NMS in STN-DBS in PD. METHODS: In this prospective, open-label, multicenter study including 50 PD patients undergoing bilateral STN-DBS, we collected NMSScale (NMSS), NMSQuestionnaire (NMSQ), Hospital Anxiety and Depression Scale (anxiety/depression, HADS-A/-D), PDQuestionnaire-8 (PDQ-8), Scales for Outcomes in PD-motor examination, motor complications, activities of daily living (ADL), and levodopa equivalent daily dose (LEDD) preoperatively and at 6 months follow-up...
March 16, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29649513/neurofeedback-control-of-the-human-gabaergic-system-using-non-invasive-brain-stimulation
#20
Satoko Koganemaru, Yusuke Mikami, Hitoshi Maezawa, Satoshi Ikeda, Katsunori Ikoma, Tatsuya Mima
Neurofeedback has been a powerful method for self-regulating brain activities to elicit potential ability of human mind. GABA is a major inhibitory neurotransmitter in the central nervous system. Transcranial magnetic stimulation (TMS) is a tool that can evaluate the GABAergic system within the primary motor cortex (M1) using paired-pulse stimuli, short intracortical inhibition (SICI). Herein we investigated whether neurofeedback learning using SICI enabled us to control the GABAergic system within the M1 area...
April 9, 2018: Neuroscience
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