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Parkinson disease treatment

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https://www.readbyqxmd.com/read/28339403/dopamine-transporter-imaging-has-no-impact-on-functional-outcomes-in-de-novo-probable-parkinson-s-disease
#1
Patrick T Hickey, Maragatha Kuchibhatla, Burton Scott, Lisa Gauger, Mark A Stacy
BACKGROUND: Parkinson's disease (PD) is among the most prevalent neurodegenerative conditions. While motor and non-motor aspects of this disease have been well characterized, no objective biomarker exists to support an accurate clinical diagnosis. However, newer imaging techniques, including [123I]-FP-CIT (DaTSCAN), have demonstrated utility in differentiating between PD and non-neurodegenerative tremor disorders. OBJECTIVE: DaTSCAN has been primarily investigated in situations where diagnostic confusion exists, and in these instances has been shown to significantly impact clinical management...
March 20, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28338241/neuroprotective-effects-of-loganin-on-mptp-induced-parkinson-s-disease-mice-neurochemistry-glial-reaction-and-autophagy-studies
#2
Yi-Da Xu, Chun Cui, Meng-Fei Sun, Ying-Li Zhu, Min Chu, Yun-Wei Shi, Stanley Li Lin, Xu-Sheng Yang, Yan-Qin Shen
Parkinson's disease (PD) is a progressive neurodegenerative disease, involving resting tremor and bradykinesia, for which no recognized therapies or drugs are available to halt or slow progression. In recent years, natural botanic products have been considered relatively safe, with limited side effects, and are expected to become an important source for clinical mediation of PD in the future. Our study focuses on the ability of loganin, a compound derived from fruits of cornus, to mediate neuroprotection in a mouse model of PD...
March 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28337696/cerebral-dopamine-neurotrophic-factor-a-potential-therapeutic-agent-for-parkinson-s-disease
#3
REVIEW
Tingting Tang, Yong Li, Qian Jiao, Xixun Du, Hong Jiang
The application of neurotrophic factors (NTFs) is a promising therapeutic strategy for neurodegenerative disorders such as Parkinson's disease (PD). Many NTFs have been reported to enhance the survival, regeneration, and differentiation of neurons and to induce synaptic plasticity. However, because of their potential side-effects and low efficacy after clinical administration, more potent treatments for neurodegenerative disorders are being sought. Cerebral dopamine neurotrophic factor (CDNF), a newly-identified NTF homologous to mesencephalic astrocyte-derived NTF, is structurally and functionally different from other NTFs, providing new hope especially for PD patients...
March 23, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28337659/a20-in-multiple-sclerosis-and-parkinson-s-disease-clue-to-a-common-dysregulation-of-anti-inflammatory-pathways
#4
Simona Perga, Serena Martire, Francesca Montarolo, Nicole D Navone, Andrea Calvo, Giuseppe Fuda, Alberto Marchet, Daniela Leotta, Adriano Chiò, Antonio Bertolotto
Chronic inflammation significantly contributes to the pathogenesis of several neurodegenerative disorders. In physiological conditions, a chronic inflammatory state is prevented through the termination of the acute inflammatory response once the triggering insult is eliminated. Several mechanisms regulate the resolution of inflammation. Among these, a potent inhibitor of the pro-inflammatory NF-kB signaling known as A20 has emerged as a key player. Recent studies have shown reduced blood levels of A20 in the patients of diverse chronic inflammatory diseases...
March 23, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28337120/antidyskinetic-effects-of-mek-inhibitor-are-associated-with-multiple-neurochemical-alterations-in-the-striatum-of-hemiparkinsonian-rats
#5
Guiqin Chen, Shuke Nie, Chao Han, Kai Ma, Yan Xu, Zhentao Zhang, Stella M Papa, Xuebing Cao
L-DOPA-induced dyskinesia (LID) represents one of the major problems of the long-term therapy of patients with Parkinson's disease (PD). Although, the pathophysiologic mechanisms underlying LID are not completely understood, activation of the extracellular signal regulated kinase (ERK) is recognized to play a key role. ERK is phosphorylated by mitogen-activated protein kinase kinase (MEK), and thus MEK inhibitor can prevent ERK activation. Here the effect of the MEK inhibitor PD98059 on LID and the associated molecular changes were examined...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28336342/pharmacological-assessments-of-potent-a2a-receptor-antagonist-idpu-1-7-imino-3-propyl-2-3-dihydrothiazolo-4-5-d-pyrimidin-6-7h-yl-urea-in-rodent-model-of-haloperidol-induced-parkinson-like-symptoms
#6
Namrata Kumari, Saurabh Agrawal, Pratibha Mehta Luthra
A2A receptor antagonists emerged as potential candidate for management of Parkinson's disease. Earlier we had reported the therapeutic potential of 1-(7-imino-3-propyl-2,3-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl) urea (IDPU) as A2A receptor antagonist. Herein, we have investigated the effect of IDPU in attenuation of haloperidol induced Parkinson like symptoms in rats. It has successfully restored hypo-locomotion induced by haloperidol and NECA. IDPU also displayed protective effect against oxidative stress induced by chronic haloperidol treatment in rats...
March 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28334851/the-modulatory-effect-of-adaptive-deep-brain-stimulation-on-beta-bursts-in-parkinson-s-disease
#7
Gerd Tinkhauser, Alek Pogosyan, Simon Little, Martijn Beudel, Damian M Herz, Huiling Tan, Peter Brown
Adaptive deep brain stimulation uses feedback about the state of neural circuits to control stimulation rather than delivering fixed stimulation all the time, as currently performed. In patients with Parkinson's disease, elevations in beta activity (13-35 Hz) in the subthalamic nucleus have been demonstrated to correlate with clinical impairment and have provided the basis for feedback control in trials of adaptive deep brain stimulation. These pilot studies have suggested that adaptive deep brain stimulation may potentially be more effective, efficient and selective than conventional deep brain stimulation, implying mechanistic differences between the two approaches...
February 13, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28332824/indole-substituted-benzothiazoles-and-benzoxazoles-as-selective-and-reversible-mao-b-inhibitors-for-treatment-of-parkinson-s-disease
#8
Min-Ho Nam, Moosung Park, Hyeri Park, Youngjae Kim, Seulki Yoon, Vikram Shahaji Sawant, Ji Won Choi, Jong-Hyun Park, Ki Duk Park, Sun-Joon Min, Changjoon Justin Lee, Hyunah Choo
To develop a novel, selective, and reversible MAO-B inhibitors for safer treatment of Parkinson's disease, benzothiazole and benzoxazole derivatives with indole moiety were designed and synthesized. Most of the synthesized compounds showed inhibitory activities against MAO-B and selectivity over MAO-A. The most active compound was Compound 5b, 6-fluoro-2-(1-methyl-1H-indol-5-yl)benzo[d]thiazole with an IC50 value of 29 nM with no apparent effect on MAO-A activity at 10 M. Based on the reversibility assay, Compound 5b turned out to be a fully reversible with over 95% of recovery of enzyme activity after washout of the compound...
March 23, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28332488/parkinson-disease
#9
REVIEW
Werner Poewe, Klaus Seppi, Caroline M Tanner, Glenda M Halliday, Patrik Brundin, Jens Volkmann, Anette-Eleonore Schrag, Anthony E Lang
Parkinson disease is the second-most common neurodegenerative disorder that affects 2-3% of the population ≥65 years of age. Neuronal loss in the substantia nigra, which causes striatal dopamine deficiency, and intracellular inclusions containing aggregates of α-synuclein are the neuropathological hallmarks of Parkinson disease. Multiple other cell types throughout the central and peripheral autonomic nervous system are also involved, probably from early disease onwards. Although clinical diagnosis relies on the presence of bradykinesia and other cardinal motor features, Parkinson disease is associated with many non-motor symptoms that add to overall disability...
March 23, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28331324/update-on-the-treatment-of-parkinson-s-disease-psychosis-role-of-pimavanserin
#10
REVIEW
Brianna L Combs, Arthur G Cox
Parkinson's disease (PD) has a prevalence of nearly 1 million people in the USA, with increasing incidence in the elderly population. Generally, the age of presentation is between 55 and 65 years, with the likelihood of diagnosis increasing as patients reach the age of 80 years or above. Some of the common treatments for PD increase dopamine levels in the brain. Dopaminergic therapy helps to improve motor and non-motor symptoms, but it is not without risks. Dopaminergic therapy can cause confusion, delirium, and psychotic-like behavior...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28331322/the-role-of-deep-brain-stimulation-in-parkinson-s-disease-an-overview-and-update-on-new-developments
#11
REVIEW
John Y Fang, Christopher Tolleson
Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized by the loss of neuronal dopamine production in the brain. Oral therapies primarily augment the dopaminergic pathway. As the disease progresses, more continuous delivery of therapy is commonly needed. Deep brain stimulation (DBS) has become an effective therapy option for several different neurologic and psychiatric conditions, including PD. It currently has US Food and Drug Administration approval for PD and essential tremor, as well as a humanitarian device exception for dystonia and obsessive-compulsive disorder...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28330576/-interests-of-the-ultrasound-guidance-in-the-treatment-of-drooling-through-botulinum-toxin-injections-our-experience-over-10%C3%A2-years
#12
M Mailly, C Rebours, P Koskas, P Klap, D Ayache, M Cohen
OBJECTIVES: To report about our 10 years' experience about the treatment of drooling by ultrasound guided botulinum toxin injections. MATERIAL AND METHODS: Retrospective monocentric study including all the patients suffering from drooling and treated by ultrasound-guided botulinum toxin injections into the salivary glands between 2004 and 2015. The etiology of r drooling, the doses of toxin, the injected glands, the size of the glands measured by ultrasonography, the effectiveness of the treatment and the side effects were assessed...
February 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28330542/-lewy-body-dementias
#13
Annemette Løkkegaard, Lise Korbo
Dementia with Lewy bodies and Parkinson disease dementia share the same pathophysiology. Together they are called Lewy body dementias and are the second most common type of dementia. Lewy body dementias receive little attention, and patients are often misdiagnosed, leading to less than ideal management. In this article, diagnostic criteria combined with imaging and other biomarkers as well as current treatment recommendations are summarized, and some of the challenges for the future are outlined. Refinement of diagnosis and clarification of the pathogenesis are required in search for disease-modifying treatments...
March 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28328536/neurotransmission-systems-in-parkinson-s-disease
#14
Hossein Sanjari Moghaddam, Ameneh Zare-Shahabadi, Farzaneh Rahmani, Nima Rezaei
Parkinson's disease (PD) is histologically characterized by the accumulation of α-synuclein particles, known as Lewy bodies. The second most common neurodegenerative disorder, PD is widely known because of the typical motor manifestations of active tremor, rigidity, and postural instability, while several prodromal non-motor symptoms including REM sleep behavior disorders, depression, autonomic disturbances, and cognitive decline are being more extensively recognized. Motor symptoms most commonly arise from synucleinopathy of nigrostriatal pathway...
March 22, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28328168/intrastriatal-transplantation-of-human-neural-stem-cells-restores-the-impaired-subventricular-zone-in-parkinsonian-mice
#15
Fuxing Zuo, Feng Xiong, Xia Wang, Xueyuan Li, Renzhi Wang, Wei Ge, Xinjie Bao
Cell replacement therapy using neural stem cells (NSCs) transplantation has recently emerged as a promising method of Parkinson's disease (PD) treatment; however, the underlying mechanisms are not fully understood. To gain new insights into the mechanisms of 6-hydroxydopamine (6-OHDA)-induced lesioning and therapeutic efficacy of human NSCs (hNSCs) transplantation, the striatum (ST) of intrastriatal 6-OHDA-injected parkinsonian mice were unilaterally engrafted with undifferentiated hNSCs. A high-throughput quantitative proteomic approach was used to characterize the proteome profiles of PD-related brain regions such as the SN, ST, olfactory bulb (OB), and subventricular zone (SVZ) in these mice...
March 22, 2017: Stem Cells
https://www.readbyqxmd.com/read/28325755/loss-of-pink1-leads-to-metabolic-deficits-in-adult-neural-stem-cells-and-impedes-differentiation-of-newborn-neurons-in-the-mouse-hippocampus
#16
Sandeep Kumar Agnihotri, Ruifang Shen, Jihong Li, Xu Gao, Hansruedi Büeler
Emerging evidence suggests that mitochondrial dynamics regulates adult hippocampal neurogenesis (AHN). Although abnormal AHN has been linked to depression, anxiety, and cognitive dysfunction, which are features of neurodegenerative conditions, including Parkinson's disease (PD), the impact of mitochondrial deficits on AHN have not been explored previously in a model of neurodegeneration. Here, we used PTEN-induced kinase 1-deficient (PINK1(-/-) ) mice that lacked a mitochondrial kinase mutated in recessive familial PD...
March 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28325153/ultra-micronized-palmitoylethanolamide-an-efficacious-adjuvant-therapy-for-parkinson-s-disease
#17
Stefania Brotini, Carlo Schievano, Leonello Guidi
BACKGROUND: Parkinson's disease (PD) is the subject of intense efforts to develop strategies that slow down or stop disease progression and disability. Substantial evidence points to a prominent role for neuroinflammation in the underlying dopaminergic cell death. Ultramicronized palmitoylethanolamide (um-PEA) is well-known for its ability to promote the resolution of neuroinflammation and exert neuroprotection. This study was designed to assess the efficacy of um-PEA as adjuvant therapy in patients with advanced PD...
March 21, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28325145/nanotechnology-as-potential-tool-for-sirna-delivery-in-parkinson-s-disease
#18
Hernán Cortés, Sergio Alcalá-Alcalá, Arturo Ávalos-Fuentes, Nestor Mendoza-Muñoz, David Quintanar-Guerrero, Gerardo Leyva-Gómez, Benjamín Florán
The lack of an outright treatment for Parkinson's disease (PD) is a pivotal concern in medicine and has driven the search for novel alternatives for treating the disease. Among the proposed approaches, small interfering RNA (siRNA)-based therapy is attracting significant attention as a potential method for the treatment of PD; however, siRNAs delivery possesses potential drawbacks, such as reduced stability in blood circulation and low capacity for reaching the target site. Therefore, siRNA delivery to the brain is a key issue that remains unsolved to date...
March 21, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28323427/kinetin-riboside-and-its-protides-activate-the-parkinson-s-disease-associated-pten-induced-putative-kinase-1-pink1-independent-of-mitochondrial-depolarisation
#19
Laura Osgerby, Yu-Chiang Lai, Peter J Thornton, Joseph Amalfitano, Cécile S Le Duff, Iqra Jabeen, Hachemi Kadri, Ageo Miccoli, James H R Tucker, Miratul M K Muqit, Youcef Mehellou
Since loss of function mutations of PINK1 lead to early-onset Parkinson's disease, there has been growing interest in the discovery of small molecules that amplify the kinase activity of PINK1. We herein report the design, synthesis, serum stability and hydrolysis of four kinetin riboside ProTides. These ProTides, along with kinetin riboside, activated PINK1 in cells independent of mitochondrial depolarization. This highlights the potential of modified nucleosides and their phosphate prodrugs as treatments for neurodegenerative diseases...
March 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28320274/brain-mitochondrial-subproteome-of-rpn10-binding-proteins-and-its-changes-induced-by-the-neurotoxin-mptp-and-the-neuroprotector-isatin
#20
A E Medvedev, O A Buneeva, A T Kopylov, O V Tikhonova, M V Medvedeva, L N Nerobkova, I G Kapitsa, V G Zgoda
Mitochondria play an important role in molecular mechanisms of neuroplasticity, adaptive changes of the brain that occur in the structure and function of its cells in response to altered physiological conditions or development of pathological disorders. Mitochondria are a crucial target for actions of neurotoxins, causing symptoms of Parkinson's disease in various experimental animal models, and also neuroprotectors. Good evidence exists in the literature that mitochondrial dysfunction induced by the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) influences functioning of the ubiquitin-proteasomal system (UPS) responsible for selective proteolytic degradation of proteins from various intracellular compartments (including mitochondria), and neuroprotective effects of certain antiparkinsonian agents (monoamine oxidase inhibitors) may be associated with their effects on UPS...
March 2017: Biochemistry. Biokhimii︠a︡
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