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Parkinsons prevention

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https://www.readbyqxmd.com/read/28334832/the-n-glycosylation-of-immunoglobulin-g-as-a-novel-biomarker-of-parkinson-s-disease
#1
Alyce C Russell, Mirna Šimurina, Monique T Garcia, Mislav Novokmet, Youxin Wang, Igor Rudan, Harry Campbell, Gordan Lauc, Meghan G Thomas, Wei Wang
The use of the emerging "omics" technologies for large scale population screening is promising in terms of predictive, preventive and personalized medicine. For Parkinson's disease, it is essential that an accurate diagnosis is obtained and disease progression can be monitored. Immunoglobulin G (IgG) has the ability to exert both anti-inflammatory and pro-inflammatory effects, and the N-glycosylation of the fragment crystallizable portion of IgG is involved in this process. This study aimed to determine whether the IgG glycome could be a candidate biomarker for Parkinson's disease...
March 17, 2017: Glycobiology
https://www.readbyqxmd.com/read/28332824/indole-substituted-benzothiazoles-and-benzoxazoles-as-selective-and-reversible-mao-b-inhibitors-for-treatment-of-parkinson-s-disease
#2
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/28330956/predictive-markers-for-early-conversion-of-irbd-to-neurodegenerative-synucleinopathy-diseases
#3
Yuanyuan Li, Wenyan Kang, Qiong Yang, Lina Zhang, Linyuan Zhang, Fangyi Dong, Shengdi Chen, Jun Liu
OBJECTIVE: To determine the predictive value of clinical assessment and dopamine transporter (DAT) uptake for the early development of neurodegenerative synucleinopathy diseases from idiopathic REM sleep behavior disorder (iRBD) over 5 years in a Chinese population. METHODS: Forty-three patients with iRBD were administered clinical assessment tests, and 35 were examined by DAT-SPECT imaging during 2011. Cox proportional hazard and Kaplan-Meier analyses were used to evaluate the predictive value of the markers in a follow-up study over 5 years...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28329183/remote-traumatic-brain-injury-is-associated-with-motor-dysfunction-in-older-military-veterans
#4
Raquel C Gardner, Carrie B Peltz, Kimbra Kenney, Kenneth E Covinsky, Ramon Diaz-Arrastia, Kristine Yaffe
Background: Traumatic brain injury (TBI) has been identified as a risk factor for Parkinson's disease (PD). Motor dysfunction among TBI-exposed elders without PD has not been well characterized. We sought to determine whether remote TBI is a risk factor for motor dysfunction on exam and functionally relevant motor dysfunction in day-to-day life among independently living elders without PD. Methods: This is a cross-sectional cohort study of independently living retired military veterans aged 50 or older with (n = 78) and without (n = 85) prior TBI-all without diagnosed PD...
January 20, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28327916/multilayer-modeling-and-analysis-of-human-brain-networks
#5
Manlio De Domenico
Understanding how the human brain is structured, and how its architecture is related to the function, is of paramount importance for a variety of applications, including, but not limited to, new ways to prevent, deal with and cure brain diseases, such as Alzheimer's or Parkinson's, and psychiatric disorders, such as Schizophrenia. The recent advances in structural and functional neuroimaging, together with the increasing attitude to interdisciplinary approaches involving computer science, mathematics and physics, are fostering interesting results from computational neuroscience, that are quite often based on the analysis of complex network representation of human brain...
February 6, 2017: GigaScience
https://www.readbyqxmd.com/read/28322751/neuroprotective-effects-of-2-4-dinitrophenol-in-an-acute-model-of-parkinson-s-disease
#6
Yujeong Lee, Gwangbeom Heo, Kyung Moon Lee, Ah Hyun Kim, Ki Wung Chung, Eunok Im, Hae Young Chung, Jaewon Lee
Neurons depend on mitochondria for homeostasis and survival, and thus, mitochondrial dysfunction has been implicated in neurodegenerative diseases, including Parkinson's disease (PD). Increasing evidence indicates the mitochondrial uncoupler, 2,4-dinitrophenol (DNP), protects neurons against neurodegeneration and enhances neural plasticity. Here, the authors evaluated the protective effects of intraperitoneally (i.p.) administered low dose DNP in an acute mouse model of PD. Mice were administered DNP (1 or 5 mg/kg) for 12 consecutive days, and then on day 13, MPTP (20 mg/kg, i...
March 17, 2017: Brain Research
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
#7
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
https://www.readbyqxmd.com/read/28319892/mitochondrial-hyperpolarization-in-ipsc-derived-neurons-from-patients-of-ftdp-17-with-10-16-mapt-mutation-leads-to-oxidative-stress-and-neurodegeneration
#8
Noemí Esteras, Jonathan D Rohrer, John Hardy, Selina Wray, Andrey Y Abramov
Tau protein inclusions are a frequent hallmark of a variety of neurodegenerative disorders. The 10+16 intronic mutation in MAPT gene, encoding tau, causes frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17), by altering the splicing of the gene and inducing an increase in the production of 4R tau isoforms, which are more prone to aggregation. However, the molecular mechanisms linking increased 4R tau to neurodegeneration are not well understood. Here, we have used iPSC-derived neurons from patients of FTDP-17 carrying the 10+16 mutation to study the molecular mechanisms underlying neurodegeneration...
March 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28318981/idiopathic-intradural-dorsal-thoracic-arachnoid-cysts-a-case-series-and-review-of-the-literature
#9
Heath French, Arjuna Somasundaram, Michael Biggs, Jonathon Parkinson, Rodney Allan, Jonathon Ball, Nicholas Little
BACKGROUND: Spinal intradural arachnoid cysts (SIAC) are cerebrospinal fluid (CSF) filled sacs formed by arachnoid membranes and may be either idiopathic or acquired. Idiopathic cysts represent a separate entity and their aetiology remains uncertain. By far the most difficult differential diagnosis is distinguishing between idiopathic anterior spinal cord herniation (IASCH) and dorsal thoracic intradural arachnoid cysts (TIAC), due to their similarity in radiological appearance. Cine-mode (SSFP) is emerging as a novel technique in the diagnosis and operative planning of SIAC...
March 17, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28302035/translational-multimodality-neuroimaging
#10
Sushil K Sharma
Recently high-resolution, noninvasive, multimodality in-vivo molecular imaging with PET, SPECT, CT and MRI, employing fusion algorithms has revolutionized personalized medicine. However, specific radiopharmaceuticals (RPs) for the accurate diagnosis and effective treatment of progressive neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, drug addiction, and other cognitive impairments still remain in developmental phase. Currently, multimodality fusion neuroimaging is utilized for the determination of: pharmacokinetics and pre-clinical development of radiopharmaceuticals (RPs); in-vivo monitoring of stem cell transplantation therapy; nicotinic acetylcholine receptors (nAChRs) investigations; and regional cerebral blood flow and glucose metabolism in cognitively-impaired subjects employing noninvasive microPET and nano-SPECT imaging...
March 15, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28301304/neuroprotective-and-therapeutic-effect-of-caffeine-on-the-rat-model-of-parkinson-s-disease-induced-by-rotenone
#11
Yasser A Khadrawy, Ahmed M Salem, Karima A El-Shamy, Emad K Ahmed, Nevein N Fadl, Eman N Hosny
The present study aimed to investigate the protective and therapeutic effects of caffeine on rotenone-induced rat model of Parkinson's disease (PD). Rats were divided into control, PD model induced by rotenone (1.5 mg/kg intraperitoneally (i.p.) for 45 days), protected group injected with caffeine (30 mg/kg, i.p.) and rotenone for 45 days (during the development of PD model), and treated group injected with caffeine (30 mg/kg, i.p.) for 45 days after induction of PD model. The data revealed a state of oxidative and nitrosative stress in the midbrain and the striatum of animal model of PD as indicated from the increased lipid peroxidation and nitric oxide levels and the decreased reduced glutathione level and activities of glutathione-S-transferase and superoxide dismutase...
September 3, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28293679/research-conference-summary-from-the-2014-international-task-force-on-atp1a3-related-disorders
#12
Hendrik Rosewich, Matthew T Sweney, Suzanne DeBrosse, Kevin Ess, Laurie Ozelius, Eva Andermann, Frederick Andermann, Gene Andrasco, Alice Belgrade, Allison Brashear, Sharon Ciccodicola, Lynn Egan, Alfred L George, Aga Lewelt, Joshua Magelby, Mario Merida, Tara Newcomb, Vicky Platt, Dominic Poncelin, Sandra Reyna, Masayuki Sasaki, Marcio Sotero de Menezes, Kathleen Sweadner, Louis Viollet, Mary Zupanc, Kenneth Silver, Kathryn Swoboda
OBJECTIVE: ATP1A3-related neurologic disorders encompass a broad range of phenotypes that extend well beyond initial phenotypic criteria associated with alternating hemiplegia of childhood (AHC) and rapid-onset dystonia parkinsonism. METHODS: In 2014, the Alternating Hemiplegia of Childhood Foundation hosted a multidisciplinary workshop intended to address fundamental challenges surrounding the diagnosis and management of individuals with ATP1A3-related disorders...
April 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28293166/protein-remodeling-factors-as-potential-therapeutics-for-neurodegenerative-disease
#13
REVIEW
Meredith E Jackrel, James Shorter
Protein misfolding is implicated in numerous neurodegenerative disorders including amyotrophic lateral sclerosis, Parkinson's disease, Alzheimer's disease, and Huntington's disease. A unifying feature of patients with these disorders is the accumulation of deposits comprised of misfolded protein. Aberrant protein folding can cause toxicity through a loss or gain of protein function, or both. An intriguing therapeutic approach to counter these disorders is the application of protein-remodeling factors to resolve these misfolded conformers and return the proteins to their native fold and function...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28293017/longitudinal-study-of-the-associations-between-change-in-sedentary-behavior-and-change-in-adiposity-during-childhood-and-adolescence-gateshead-millennium-study
#14
K D Mann, L D Howe, L Basterfield, K N Parkinson, M S Pearce, J K Reilly, A J Adamson, J J Reilly, X Janssen
BACKGROUND: Sedentary time (ST) has been reported to have a range of negative health effects in adults, however, the evidence for such effects among children and adolescents is sparse. The primary aim of the study was to examine associations between changes in sedentary behavior (time and fragmentation) and changes in adiposity across childhood and adolescence. METHODS: Participants were recruited as part of the Gateshead Millennium Study. Measures were taken at age 7y (n=502), 9y (n=506), 12y (n=420) and 15y (n=306)...
March 15, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28288810/cognitive-behavior-and-sensory-function-were-significantly-influenced-by-restoration-of-active-ovarian-function-in-postreproductive-mice
#15
Kate C Parkinson, Rhett L Peterson, Jeffrey B Mason
In mammals, the relationship between reproductive function and health has been particularly difficult to define. Previously, in old, postreproductive-aged mice, replacement of senescent ovaries with new ovaries from young, actively cycling mice increased life span. We hypothesized that the same factors that increased life span would also influence health span. In the current experiments, we tested two of the seven domains of function/health, sensory function and cognition to determine if exposure of postreproductive female mice to young transplanted ovaries influenced health span...
March 10, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28286180/dysregulation-of-bet-proteins-in-levodopa-induced-dyskinesia
#16
David A Figge, David G Standaert
Levodopa (L-DOPA) remains the most effective pharmacological treatment for Parkinson Disease (PD) but its use is limited by the development of debilitating drug-related side effects, particularly L-DOPA induced dyskinesia (LID). LID is a consequence of long-term L-DOPA use, and in model systems is characterized by a "priming effect", whereby initial administrations of L-DOPA trigger a sensitized biochemical and transcriptional response upon subsequent dopaminergic stimulation. Preliminary studies into the mechanisms underlying this cellular memory have indicated an important role for epigenetic change but many of the downstream mechanisms remain unknown...
March 9, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28284907/minocycline-protects-rescues-and-prevents-knockdown-transgenic-parkin-drosophila-against-paraquat-iron-toxicity-implications-for-autosomic-recessive-juvenile-parkinsonism
#17
Hector Flavio Ortega-Arellano, Marlene Jimenez-Del-Rio, Carlos Velez-Pardo
Autosomal recessive Juvenile Parkinsonism (AR-JP) is a chronic, progressive neurodegenerative disorder caused by mutation in the PARKIN gene, and invariably associated with dopaminergic (DAergic) neuronal loss and brain iron accumulation. Since current medical therapy is symptomatic and lacks significant disease-modifying effects, other treatment approaches are urgently needed it. In the present work, we investigate the role of minocycline (MC) in paraquat (PQ)/iron-induced neurotoxicity in the Drosophila TH>parkin-RNAi/+ (w[*]; UAS-parkin-RNAi; TH-GAL4) fly and have shown the following: (i) MC increased life span and restored the locomotor activity of knockdown (KD) transgenic parkin flies in comparison with the control (vehicle) group; (ii) MC at low (0...
March 8, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28284817/differential-effects-of-gaseous-versus-injectable-anesthetics-on-changes-in-regional-cerebral-blood-flow-and-metabolism-induced-by-l-dopa-in-a-rat-model-of-parkinson-s-disease
#18
Zisis Bimpisidis, Carl M Öberg, Natallia Maslava, M Angela Cenci, Cornelia Lundblad
Preclinical imaging of brain activity requires the use of anesthesia. In this study, we have compared the effects of two widely used anesthetics, inhaled isoflurane and ketamine/xylazine cocktail, on cerebral blood flow and metabolism in a rat model of Parkinson's disease and l-DOPA-induced dyskinesia. Specific tracers were used to estimate regional cerebral blood flow (rCBF - [(14)C]-iodoantipyrine) and regional cerebral metabolic rate (rCMR - [(14)C]-deoxyglucose) with a highly sensitive autoradiographic method...
March 8, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28284752/troxerutin-exerts-neuroprotection-in-6-hydroxydopamine-lesion-rat-model-of-parkinson-s-disease-possible-involvement-of-pi3k-er%C3%AE-signaling
#19
Tourandokht Baluchnejadmojarad, Nida Jamali-Raeufy, Sedigheh Zabihnejad, Nafiseh Rabiee, Mehrdad Roghani
Parkinson's disease (PD) is a neurodegenerative disease with progressive loss of mesencephalic dopaminergic neurons of the substantia nigra and with multiple incapacitating motor and non-motor symptoms. Troxerutin is a natural bioflavonoid with nephro- and hepato-protective, antioxidant, and anti-inflammatory properties. In this study, we evaluated its possible neuroprotective effect in 6-hydroxydopamine (6-OHDA) rat model of PD. Intrastriatal 6-OHDA-lesioned rats were pretreated with troxerutin at a dose of 150mg/kg/day for 1 week...
March 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28276272/gut-brain-and-brain-gut-axis-in-parkinson-s-disease-models-effects-of-a-uridine-and-fish-oil-diet
#20
Paula Perez-Pardo, Hemraj B Dodiya, Laus M Broersen, Hidde Douna, Nick van Wijk, Sofia Lopes da Silva, Johan Garssen, Ali Keshavarzian, Aletta D Kraneveld
Recent investigations have focused on the potential role of gastrointestinal (GI) abnormalities in the pathogenesis of Parkinson's disease (PD). The 'dual-hit' hypothesis of PD speculates that a putative pathogen enters the brain via two routes: the olfactory system and the GI system. Here, we investigated (1) whether local exposures of the neurotoxin rotenone in the gut or the brain of mice could induce PD-like neurological and GI phenotypes as well as a characteristic neuropathology in accordance with this 'dual-hit hypothesis' and (2) the effects of a diet containing uridine and fish oil providing docosahexaenoic acid (DHA), in both models...
March 9, 2017: Nutritional Neuroscience
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