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https://www.readbyqxmd.com/read/29779176/intranasal-delivery-of-pgdnf-dna-nanoparticles-provides-neuroprotection-in-the-rat-6-hydroxydopamine-model-of-parkinson-s-disease
#1
Amirah E-E Aly, Brendan T Harmon, Linas Padegimas, Ozge Sesenoglu-Laird, Mark J Cooper, Barbara L Waszczak
Glial cell line-derived neurotrophic factor (GDNF) gene therapy could offer a disease-modifying treatment for Parkinson's disease (PD). Here, we report that plasmid DNA nanoparticles (NPs) encoding human GDNF administered intranasally to rats induce transgene expression in the brain and protect dopamine neurons in a model of PD. To first test whether intranasal administration could transfect cells in the brain, rats were sacrificed 1 week after intranasal pGDNF NPs or the naked plasmid. GDNF ELISA revealed significant increases in GDNF expression throughout the brain for both treatments...
May 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29779175/anthocyanins-improve-hippocampus-dependent-memory-function-and-prevent-neurodegeneration-via-jnk-akt-gsk3%C3%AE-signaling-in-lps-treated-adult-mice
#2
Muhammad Sohail Khan, Tahir Ali, Min Woo Kim, Myeung Hoon Jo, Jong Il Chung, Myeong Ok Kim
Microglia plays a critical role in the brain and protects neuronal cells from toxins. However, over-activation of microglia leads to deleterious effects. Lipopolysaccharide (LPS) has been reported to affect neuronal cells via activation of microglia as well as directly to initiate neuroinflammation. In the present study, we evaluated the anti-inflammatory and anti-oxidative effect of anthocyanins against LPS-induced neurotoxicity in an animal model and in cell cultures. Intraperitoneal injections of LPS (250 μg/kg/day for 1 week) induce ROS production and promote neuroinflammation and neurodegeneration which ultimately leads to memory impairment...
May 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29778064/is-the-limit-cycle-attractor-an-almost-invariable-characteristic-in-human-walking
#3
Kim-Charline Broscheid, Christian Dettmers, Manfred Vieten
BACKGROUND: Common methods of gait analyses measure step length/width, gait velocity and gait variability to name just a few. Those parameters tend to be changing with fitness and skill of the subjects. But, do stable subject characteristic parameters in walking exist? Does the Limit-Cycle-Attractor qualify as such a parameter?. RESEARCH QUESTION: The attractor method is a new approach focusing on the dynamics of human motion. It classifies the fundamental walking pattern by calculating the Limit-Cycle-Attractor and its variability from acceleration data of the feet...
May 16, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29777584/neuropsychiatric-expression-and-catatonia-in-22q11-2-deletion-syndrome-an-overview-and-case-series
#4
Nancy J Butcher, Erik Boot, Anthony E Lang, Danielle Andrade, Jacob Vorstman, Donna McDonald-McGinn, Anne S Bassett
Individuals with 22q11.2 deletion syndrome (22q11.2DS) are at elevated risk of developing treatable psychiatric and neurological disorders, including anxiety disorders, schizophrenia, seizures, and movement disorders, often beginning in adolescence or early to mid-adulthood. Here, we provide an overview of neuropsychiatric features associated with 22q11.2DS in adulthood. Results of a new case series of 13 individuals with 22q11.2DS and catatonic features together with 5 previously reported cases support a potential association of this serious psychomotor phenotype with the 22q11...
May 19, 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29777529/pharmacokinetics-of-ads-5102-amantadine-extended-release-capsules-administered-once-daily-at-bedtime-for-the-treatment-of-dyskinesia
#5
Robert A Hauser, Rajesh Pahwa, William A Wargin, Cindy J Souza-Prien, Natalie McClure, Reed Johnson, Jack T Nguyen, Rajiv Patni, Gregory T Went
BACKGROUND: Preclinical and clinical studies suggest amantadine immediate-release (IR) may reduce dyskinesia in Parkinson's disease (PD), although higher doses are associated with increased CNS adverse events (AEs). ADS-5102 is an extended release amantadine capsule formulation, designed for once-daily dosing at bedtime (qhs) to provide high concentrations upon waking and throughout the day, with lower concentrations in the evening. The pharmacokinetics (PK) of ADS-5102 were assessed in two phase I studies in healthy subjects, and a blinded, randomized phase II/III dose-finding study in PD patients...
May 18, 2018: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29777361/tremor-induced-by-calcineurin-inhibitor-immunosuppression-a-single-centre-observational-study-in-kidney-transplanted-patients
#6
R Erro, Ruggero Bacchin, F Magrinelli, P Tomei, C Geroin, G Squintani, A Lupo, G Zaza, M Tinazzi
INTRODUCTION: Tremor is the most frequent and disabling neurological side effect under Calcineurin inhibitor-induced immunosuppression, but no studies have defined its phenomenology, severity, distribution, the impact on quality of life, as well as of other neurological symptoms associated. METHODS: 126 consecutive kidney-transplanted patients, under treatment with Cyclosporin A, Tacrolimus and non-Calcineurin inhibitors, within therapeutic range, were enrolled...
May 18, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29775152/semi-automated-application-for-estimating-subthalamic-nucleus-boundaries-and-optimal-target-selection-for-deep-brain-stimulation-implantation-surgery
#7
John A Thompson, Salam Oukal, Hagai Bergman, Steven Ojemann, Adam O Hebb, Sara Hanrahan, Zvi Israel, Aviva Abosch
OBJECTIVE Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has become standard care for the surgical treatment of Parkinson's disease (PD). Reliable interpretation of microelectrode recording (MER) data, used to guide DBS implantation surgery, requires expert electrophysiological evaluation. Recent efforts have endeavored to use electrophysiological signals for automatic detection of relevant brain structures and optimal implant target location. The authors conducted an observational case-control study to evaluate a software package implemented on an electrophysiological recording system to provide online objective estimates for entry into and exit from the STN...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29774765/-staying-safe-a-narrative-review-of-falls-prevention-in-people-with-parkinson-s-pdsafe
#8
Sophia Hulbert, Lynn Rochester, Alice Nieuwboer, Vicki Goodwin, Carolyn Fitton, Kim Chivers-Seymour, Ann Ashburn
BACKGROUND: Parkinson's disease demonstrates a spectrum of motor and non-motor symptoms. Falling is common and disabling. Current medical management shows minimal impact to reduce falls or fall-related risk factors, such as deficits in gait, strength, and postural instability. Despite evidence supporting rehabilitation in reducing fall risk factors, the most appropriate intervention to reduce overall fall rate remains inconclusive. This article aims to 1) synthesise current evidence and conceptual models of falls rehabilitation in Parkinson's in a narrative review; and based on this evidence, 2) introduce the treatment protocol used in the falls prevention and multi-centre clinical trial "PDSAFE"...
May 18, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29773975/cold-shock-induced-protein-rbm3-but-not-mild-hypothermia-protects-human-sh-sy5y-neuroblastoma-cells-from-mpp-induced-neurotoxicity
#9
Hai-Jie Yang, Xiang Shi, Fei Ju, Bei-Ning Hao, Shuang-Ping Ma, Lei Wang, Bin-Feng Cheng, Mian Wang
The cold shock protein RBM3 can mediate mild hypothermia-related protection in neurodegeneration such as Alzheimer's disease. However, it remains unclear whether RBM3 and mild hypothermia provide same protection in model of Parkinson's disease (PD), the second most common neurodegenerative disorder. In this study, human SH-SY5Y neuroblastoma cells subjected to insult by 1-methyl-4-phenylpyridinium (MPP+ ) served as an in-vitro model of PD. Mild hypothermia (32°C) aggravated MPP+ -induced apoptosis, which was boosted when RBM3 was silenced by siRNA...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29772432/silymarin-prevents-apoptosis-through-inhibiting-the-bax-caspase-3-expression-and-suppresses-toll-like-receptor-4-pathway-in-the-snc-of-6-ohda-intoxicated-rats
#10
Rasool Haddadi, Alireza Mohajjel Nayebi, Shahla Eyvari Brooshghalan
BACKGROUND AND PURPOSE: Several lines of evidence show that apoptosis, oxidative stress and neuroinflammation are associated with the development of Parkinson's disease (PD). In the present study, we investigated the effect of pre-treatment with silymarin (SM) on oxidative stress, apoptosis and toll-like receptor 4 (TLR4) expression in substantia nigra pars copmacta (SNc) of 6-hydroxydopamine (6-OHDA)-lesioned rats. METHODS: Animals were pretreated with 100, 200 or 300 mg/kg of SM daily for 5 days and at 6th day 6-OHDA (8 μg/2 μl) was infused unilaterally into the central region of the SNc...
May 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29770251/review-of-the-neurological-benefits-of-phytocannabinoids
#11
REVIEW
Joseph Maroon, Jeff Bost
Background: Numerous physical, psychological, and emotional benefits have been attributed to marijuana since its first reported use in 2,600 BC in a Chinese pharmacopoeia. The phytocannabinoids, cannabidiol (CBD), and delta-9-tetrahydrocannabinol (Δ9-THC) are the most studied extracts from cannabis sativa subspecies hemp and marijuana. CBD and Δ9-THC interact uniquely with the endocannabinoid system (ECS). Through direct and indirect actions, intrinsic endocannabinoids and plant-based phytocannabinoids modulate and influence a variety of physiological systems influenced by the ECS...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29770123/what-if-low-back-pain-is-the-most-prevalent-parkinsonism-in-the-world
#12
Jesse V Jacobs, Sharon M Henry, Fay B Horak
Low back pain (LBP) has a point prevalence of nearly 10% and ranks highest in global disease burden for years lived with disability; Parkinson's disease (PD) ranks in the top 100 most disabling health conditions for years lost and years lived with disability (1). Recent evidence suggests that people with chronic, recurrent LBP exhibit many postural impairments reminiscent of a neurological postural disorder such as PD. We compare and contrast postural impairments associated with LBP and PD in order to inform treatment strategies for both conditions...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29770111/chronic-caffeine-treatment-protects-against-%C3%AE-synucleinopathy-by-reestablishing-autophagy-activity-in-the-mouse-striatum
#13
Yanan Luan, Xiangpeng Ren, Wu Zheng, Zhenhai Zeng, Yingzi Guo, Zhidong Hou, Wei Guo, Xingjun Chen, Fei Li, Jiang-Fan Chen
Despite converging epidemiological evidence for the inverse relationship of regular caffeine consumption and risk of developing Parkinson's disease (PD) with animal studies demonstrating protective effect of caffeine in various neurotoxin models of PD, whether caffeine can protect against mutant α-synuclein (α-Syn) A53T-induced neurotoxicity in intact animals has not been examined. Here, we determined the effect of chronic caffeine treatment using the α-Syn fibril model of PD by intra-striatal injection of preformed A53T α-Syn fibrils...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29769594/touchscreen-typing-pattern-analysis-for-detecting-fine-motor-skills-decline-in-early-stage-parkinson-s-disease
#14
Dimitrios Iakovakis, Stelios Hadjidimitriou, Vasileios Charisis, Sevasti Bostantzopoulou, Zoe Katsarou, Leontios J Hadjileontiadis
Parkinson's disease (PD) is a degenerative movement disorder causing progressive disability that severely affects patients' quality of life. While early treatment can produce significant benefits for patients, the mildness of many early signs combined with the lack of accessible high-frequency monitoring tools may delay clinical diagnosis. To meet this need, user interaction data from consumer technologies have recently been exploited towards unsupervised screening for PD symptoms in daily life. Similarly, this work proposes a method for detecting fine motor skills decline in early PD patients via analysis of patterns emerging from finger interaction with touchscreen smartphones during natural typing...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29767449/outcomes-of-intradetrusor-onabotulinum-toxin-a-injection-in-patients-with-parkinson-s-disease
#15
Gregory Vurture, Benoit Peyronnet, Andrew Feigin, Milton C Biagioni, Rebecca Gilbert, Nirit Rosenblum, Steven Frucht, Alessandro Di Rocco, Victor W Nitti, Benjamin M Brucker
OBJECTIVE: To assess the safety and efficacy of intradetrusor onabotulinum toxin A injections for the treatment of overactive bladder (OAB) in patients with Parkinson's disease (PD). METHODS: All PD patients who underwent intradetrusor injections of onabotulinum toxin A (BoNT-A) for storage symptoms between 2010 and 2017 were included in a retrospective study. A 100 U dose of BoNT-A (Botox®, Allergan Irvine, CA) was used for the first injection in all patients...
May 16, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29766738/the-role-of-gene-editing-in-neurodegenerative-diseases
#16
Hueng-Chuen Fan, Ching-Shiang Chi, Yih-Jing Lee, Jeng-Dau Tsai, Shinn-Zong Lin, Horng-Jyh Harn
Neurodegenerative diseases (NDs), at least including Alzheimer's, Huntington's, and Parkinson's diseases, have become the most dreaded maladies because there are no precise diagnostic tools or definite treatments for these debilitating diseases. The increased prevalence and a substantial impact on the social-economic and medical care of NDs propel governments to develop policies to counteract the impact. Although the etiologies of NDs are still unknown, growing evidence suggests that genetic, cellular, and circuit alternations may cause the generation of abnormal misfolded proteins, which uncontrolledly accumulate to damage and eventually overwhelm the protein-disposal mechanisms of these neurons, leading to a common pathological feature of NDs...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29766664/tissue-engineered-nigrostriatal-pathway-for-treatment-of-parkinson-s-disease
#17
Laura A Struzyna, Kevin D Browne, Zachary D Brodnik, Justin C Burrell, James P Harris, H Isaac Chen, John A Wolf, Kate V Panzer, James Lim, John E Duda, Rodrigo A España, D Kacy Cullen
The classic motor deficits of Parkinson's disease are caused by degeneration of dopaminergic neurons in the substantia nigra pars compacta, resulting in the loss of their long-distance axonal projections that modulate the striatum. Current treatments only minimize the symptoms of this disconnection as there is no approach capable of replacing the nigrostriatal pathway. We are applying micro-tissue engineering techniques to create living, implantable constructs that mimic the architecture and function of the nigrostriatal pathway...
May 15, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29766510/ineffectiveness-of-saxagliptin-as-a-neuroprotective-drug-in-6-ohda-lesioned-rats
#18
Joelle de Melo Turnes, Taysa Bervian Bassani, Leonardo C Souza, Maria A B F Vital
OBJECTIVES: To determine whether the drug saxagliptin, a dipeptidyl peptidase-4 (DPP-4) inhibitor which is utilized for the treatment of Diabetes Mellitus, has neuroprotective effects in the animal model of Parkinson's disease (PD) induced by 6-hydroxydopamine (6-OHDA) in rats. METHODS: Male Wistar rats (weighing 280-300 g) received a bilateral infusion of 6-OHDA in the substantia nigra. Twenty-four hours later, they were treated with saxagliptin (1 mg/kg, p.o) once daily, for 21 days...
May 16, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29764704/current-understanding-of-neuroinflammation-after-traumatic-brain-injury-and-cell-based-therapeutic-opportunities
#19
REVIEW
Ye Xiong, Asim Mahmood, Michael Chopp
Traumatic brain injury (TBI) remains a major cause of death and disability worldwide. Increasing evidence indicates that TBI is an important risk factor for neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and chronic traumatic encephalopathy. Despite improved supportive and rehabilitative care of TBI patients, unfortunately, all late phase clinical trials in TBI have yet to yield a safe and effective neuroprotective treatment. The disappointing clinical trials may be attributed to variability in treatment approaches and heterogeneity of the population of TBI patients as well as a race against time to prevent or reduce inexorable cell death...
April 24, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/29764354/impact-of-ethnicity-on-the-natural-history-of-parkinson-disease
#20
Anna Sauerbier, Azman Aris, Ee Wei Lim, Kalyan Bhattacharya, K Ray Chaudhuri
Parkinson disease (PD) affects people of all races and ethnicity worldwide. PD is a multineurotransmitter and multisystem disorder and our current concept of the natural history of PD has changed considerably over the past decades. Many aspects of this heterogeneous condition still remain unexplained; one aspect that is poorly studied is the role of ethnicity and manifest motor and non-motor PD. Some preliminary data suggest that the prodromal risk of developing PD, clinical symptom expression and the experience of living with the condition may vary between different ethnic groups...
May 21, 2018: Medical Journal of Australia
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