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Parkinsons prevention

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https://www.readbyqxmd.com/read/27913104/d-ala2-gip-glu-pal-is-neuroprotective-in-a-chronic-parkinson-s-disease-mouse-model-and-increases-bndf-expression-while-reducing-neuroinflammation-and-lipid-peroxidation
#1
Yanwei Li, WeiZhen Liu, Lin Li, Christian Hölscher
Type 2 diabetes mellitus (T2DM) is a risk factor for Parkinson's disease (PD). Therefore, treatment to improve insulin resistance in T2DM may be useful for PD patients. Glucose dependent insulinotropic polypeptide (GIP) is a member of the incretin hormone family that can promote insulin release and improve insulin resistance. Several GIP analogues have been developed as potential treatments for T2DM. We had shown previously that D-Ala2-GIP-glu-PAL, a novel long-acting GIP analogue, can play a neuroprotective role in the PD mouse model induced by acute MPTP injection...
November 29, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27909646/the-neural-mechanisms-of-meditative-practices-novel-approaches-for-healthy-aging
#2
REVIEW
Bianca P Acevedo, Sarah Pospos, Helen Lavretsky
OBJECTIVES: Meditation has been shown to have physical, cognitive, and psychological health benefits that can be used to promote healthy aging. However, the common and specific mechanisms of response remain elusive due to the diverse nature of mind-body practices. METHODS: In this review, we aim to compare the neural circuits implicated in focused-attention meditative practices that focus on present-moment awareness to those involved in active-type meditative practices (e...
2016: Current Behavioral Neuroscience Reports
https://www.readbyqxmd.com/read/27908423/copper-brain-protein-protection-against-free-radical-induced-neuronal-death-survival-ratio-in-sh-sy5y-neuroblastoma-cell-cultures
#3
Roger Deloncle, Bernard Fauconneau, Olivier Guillard, José Delaval, Gérard Lesage, Alain Pineau
In Creutzfeldt Jakob, Alzheimer and Parkinson diseases, copper metalloproteins such as prion, amyloid protein precursor and α-synuclein are able to protect against free radicals by reduction from cupric Cu(+2) to cupreous Cu(+). In these pathologies, a regional copper (Cu) brain decrease correlated with an iron, zinc or manganese (Mn) increase has previously been observed, leading to local neuronal death and abnormal deposition of these metalloproteins in β-sheet structures. In this study we demonstrate the protective effect of Cu metalloproteins against deleterious free-radical effects...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27904610/effects-of-air-pollution-on-human-health-and-practical-measures-for-prevention-in-iran
#4
REVIEW
Adel Ghorani-Azam, Bamdad Riahi-Zanjani, Mahdi Balali-Mood
Air pollution is a major concern of new civilized world, which has a serious toxicological impact on human health and the environment. It has a number of different emission sources, but motor vehicles and industrial processes contribute the major part of air pollution. According to the World Health Organization, six major air pollutants include particle pollution, ground-level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead. Long and short term exposure to air suspended toxicants has a different toxicological impact on human including respiratory and cardiovascular diseases, neuropsychiatric complications, the eyes irritation, skin diseases, and long-term chronic diseases such as cancer...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904575/alpha-synuclein-structure-functions-and-interactions
#5
REVIEW
Fatemeh Nouri Emamzadeh
At present, when a clinical diagnosis of Parkinson's disease (PD) is made, serious damage has already been done to nerve cells of the substantia nigra pars compacta. The diagnosis of PD in its earlier stages, before this irreversible damage, would be of enormous benefit for future treatment strategies designed to slow or halt the progression of this disease that possibly prevents accumulation of toxic aggregates. As a molecular biomarker for the detection of PD in its earlier stages, alpha-synuclein (α-syn), which is a key component of Lewy bodies, in which it is found in an aggregated and fibrillar form, has attracted considerable attention...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904494/anti-apoptotic-effect-of-shudipingchan-granule-in-the-substantia-nigra-of-rat-models-of-parkinson-s-disease
#6
Qing Ye, Xiao-Lei Yuan, Jing He, Jie Zhou, Can-Xing Yuan, Xu-Ming Yang
Levodopa is the gold-standard treatment for Parkinson's disease. However, although it alleviates the clinical symptoms, it cannot delay the progressive apoptosis of dopaminergic neurons or prevent motor complications in the long term. In the present study, we investigated the effect of Shudipingchan granule on neuronal apoptosis in a rat model of Parkinson's disease, established by injecting 6-hydroxydopamine into the substantia nigra pars compacta and ventral tegmental area. We then administered levodopa (20 mg/kg intraperitoneally, twice daily) with or without Shudipingchan granule (7...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27903866/nigral-dopaminergic-pak4-prevents-neurodegeneration-in-rat-models-of-parkinson-s-disease
#7
So-Yoon Won, Mee-Hee Park, Soon-Tae You, Seung-Won Choi, Hyong-Kyu Kim, Catriona McLean, Suk-Chul Bae, Sang Ryong Kim, Byung Kwan Jin, Kun Ho Lee, Eun-Young Shin, Eung-Gook Kim
Parkinson's disease (PD) is characterized by progressive loss of dopaminergic (DA) neurons in the substantia nigra. No neuroprotective treatments have successfully prevented the progression of this disease. We report that p21-activated kinase 4 (PAK4) is a key survival factor for DA neurons. We observed PAK4 immunoreactivity in rat and human DA neurons in brain tissue, but not in microglia or astrocytes. PAK4 activity was markedly decreased in postmortem brain tissue from PD patients and in rodent models of PD...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27903442/are-micrornas-true-sensors-of-ageing-and-cellular-senescence
#8
REVIEW
Justin Williams, Flint Smith, Subodh Kumar, Murali Vijayan, P Hemachandra Reddy
All living beings are programmed to death due to aging and age-related processes. Aging is a normal process of every living species. While all cells are inevitably progressing towards death, many disease processes accelerate the aging process, leading to senescence. Pathologies such as Alzheimer's disease, Parkinson's disease, multiple sclerosis, amyotrophic lateral sclerosis, Huntington's disease, cardiovascular disease, cancer, and skin diseases have been associated with deregulated aging. Healthy aging can delay onset of all age-related diseases...
November 26, 2016: Ageing Research Reviews
https://www.readbyqxmd.com/read/27899296/targeting-the-norepinephrinergic-system-in-parkinson-s-disease-and-related-disorders-the-locus-coeruleus-story
#9
Yannick Vermeiren, Peter P De Deyn
Parkinson's disease (PD), dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD) are related, progressive and debilitating neurodegenerative disorders with hallmark features that include a variety of motor and non-motor symptoms (behavioral, autonomic and cognitive dysfunction). For almost half a century, the motor aspects have been attributed to Lewy pathology (LP) predominantly in the substantia nigra (SN), causing a major loss of dopaminergic neurons. However, the relative success of dopaminergic replacement therapies for alleviation of solely the parkinsonian features has prompted researchers to further explore other monoaminergic strategies which may tackle all PD-related aspects...
November 26, 2016: Neurochemistry International
https://www.readbyqxmd.com/read/27896592/why-have-clinical-trials-of-antioxidants-to-prevent-neurodegeneration-failed-a-cellular-investigation-of-novel-phenothiazine-type-antioxidants-reveals-competing-objectives-for-pharmaceutical-neuroprotection
#10
Maike J Ohlow, Selina Sohre, Matthias Granold, Mathias Schreckenberger, Bernd Moosmann
PURPOSE: Only a fraction of the currently established low-molecular weight antioxidants exhibit cytoprotective activity in living cells, which is considered a prerequisite for their potential clinical usefulness in Parkinson's disease or stroke. Post hoc structure-activity relationship analyses have predicted that increased lipophilicity and enhanced radical stabilization could contribute to such cytoprotective activity. METHODS: We have synthesized a series of novel phenothiazine-type antioxidants exhibiting systematic variation in their lipophilicity and radical stabilization...
November 28, 2016: Pharmaceutical Research
https://www.readbyqxmd.com/read/27895381/reactive-oxygen-species-induce-neurite-degeneration-before-induction-of-cell-death
#11
Koji Fukui
Reactive oxygen species (ROS) induce neuronal cell death in a time- and concentration-dependent manner. Treatment of cultured cells with a low concentration of hydrogen peroxide induces neurite degeneration, but not cell death. Neurites (axons and dendrites) are vulnerable to ROS. Neurite degeneration (shrinkage, accumulation, and fragmentation) has been found in neurodegenerative disorders, such as Alzheimer's disease, Parkinson's disease, and Huntington's disease. However, the mechanism of ROS-related neurite degeneration is not fully understood...
November 2016: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/27893565/first-person-perspective-action-observation-training-in-individuals-with-parkinson-s-disease-a-consideration-of-concept-controlled-pilot-trial
#12
Giovanni Giorgi, Francesco Ferrarello, Francesca Merlo, Stefano Fumagalli, Niccolò Marchionni, Mauro Di Bari
BACKGROUND AND PURPOSE: Action observation training (AOT) consists of the observing of actions performed by others, followed by imitation. Physical therapy techniques based on action observation may influence motor performance in individuals with idiopathic Parkinson's disease (IPD). OBJECTIVES: The aim of this pilot study was to provide a preliminary approach to assess AOT in anatomical first-person perspective (FPP) as a rehabilitation technique to improve body function and activity in individuals with disability due to IPD...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27890708/fbxl18-targets-lrrk2-for-proteasomal-degradation-and-attenuates-cell-toxicity
#13
Xiaodong Ding, Sandeep K Barodia, Lisha Ma, Matthew S Goldberg
Dominantly inherited mutations in leucine-rich repeat kinase 2 (LRRK2) are the most common cause of familial Parkinson's disease (PD) and LRRK2 polymorphisms are associated with increased risk for idiopathic PD. However, the molecular mechanisms by which these mutations cause PD remain uncertain. In vitro studies indicate that disease-linked mutations in LRRK2 increase LRRK2 kinase activity and LRRK2-mediated cell toxicity. Identifying LRRK2-interacting proteins and determining their effects on LRRK2 are important for understanding LRRK2 function and for delineating the pathophysiological mechanisms of LRRK2 mutations...
November 24, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/27890431/neuroprotective-mechanisms-of-plant-extracts-against-mptp-induced-neurotoxicity-future-applications-in-parkinson-s-disease
#14
REVIEW
Abdelrahman Ibrahim Abushouk, Ahmed Negida, Hussien Ahmed, Mohamed M Abdel-Daim
Parkinson's disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease, affecting about seven to 10 million patients worldwide. The major pathological features of PD are loss of dopaminergic neurons in the nigrostriatal pathway and accumulation of alpha-synuclein molecules, forming Lewy bodies. Until now, there is no effective cure for PD, and investigators are searching for neuroprotective strategies to stop or slow the disease progression. The MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) induced neurotoxicity of the nigrostriatal pathway has been used to initiate PD in animal models...
November 24, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27889925/deletion-of-the-vesicular-acetylcholine-transporter-from-pedunculopontine-laterodorsal-tegmental-neurons-modifies-gait
#15
Helena Janickova, Kaie Rosborough, Mohammed Al-Onaizi, Ornela Kljakic, Monica S Guzman, Robert Gros, Marco A M Prado, Vania F Prado
Postural instability and gait disturbances, common disabilities in the elderly and frequently present in Parkinson's disease (PD), have been suggested to be related to dysfunctional cholinergic signalling in the brainstem. We investigated how long-term loss of cholinergic signalling from mesopontine nuclei influence motor behaviours. We selectively eliminated the vesicular acetylcholine transporter (VAChT) in pedunculopontine and laterodorsal tegmental nuclei cholinergic neurons to generate mice with selective mesopontine cholinergic deficiency (VAChT(E)(n1-Cre-flox/flox) )...
November 27, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27888296/toll-like-receptor-2-is-increased-in-neurons-in-parkinson-s-disease-brain-and-may-contribute-to-alpha-synuclein-pathology
#16
Nicolas Dzamko, Amanda Gysbers, Gayathri Perera, Anita Bahar, Amrita Shankar, Jianqun Gao, YuHong Fu, Glenda M Halliday
Inflammation is likely a key contributor to the pathogenesis of Parkinson's disease (PD), a progressively debilitating neurodegenerative disease that is accompanied by a pathological accumulation of the α-synuclein protein in a staged manner through the brain. What leads to the accumulation of α-synuclein in PD and how this relates to inflammatory pathways, however, is not entirely clear. Toll-like receptor (TLR) signaling is a major pathway mediating inflammation and, in particular, TLR2 is increasingly being implicated in PD...
November 25, 2016: Acta Neuropathologica
https://www.readbyqxmd.com/read/27883274/impact-of-the-chronic-omega-3-fatty-acids-supplementation-in-hemiparkinsonism-model-induced-by-6-hydroxydopamine-in-rats
#17
Alexandre Sales Barros, Rafael Yuri Gouveia Crispim, Juliana Cavalcante Uchoa, Ricardo Basto Souza, Jonatas Cavalcante Lemos, Gerardo Cristino Filho, Mirna Marques Bezerra, Thales Fontenele Moraes Pinheiro, Silvânia Maria Mendes de Vasconcelos, Danielle Silveira Macêdo, Glauce Socorro de Barros Viana, Lissiana Magna Vasconcelos Aguiar
Parkinson's disease (PD) is characterized by a progressive degeneration of dopaminergic neurons in the substantia nigra. The neuronal degeneration may result from the convergence of a number of different pathogenic factors, including apoptosis, excitotoxicity and oxidative stress. Many studies emphasize the importance of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) in vital processes such as maintenance of the properties of cell membranes and the participation in signal transduction and biodynamic activity of neuronal membranes...
November 24, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27882828/morinda-citrifolia-mitigates-rotenone-induced-striatal-neuronal-loss-in-male-sprague-dawley-rats-by-preventing-mitochondrial-pathway-of-intrinsic-apoptosis
#18
S Narasimhan Kishore Kumar, Jayakumar Deepthy, Uthamaraman Saraswathi, Mohan Thangarajeswari, Sathyamoorthy Yogesh Kanna, Pannerselvam Ezhil, Periandavan Kalaiselvi
OBJECTIVES: Parkinson disease (PD) is a neurodegenerative disorder affecting mainly the motor system, as a result of death of dopaminergic neurons in the substantia nigra pars compacta. The present scenario of research in PD is directed to identify novel molecules that can be administered individually or co-administered with L-Dopa to prevent the L-Dopa-Induced Dyskinesia (LID) like states that arise during chronic L-Dopa administration. Hence, in this study, we investigated whether Morinda citrifolia has therapeutic effects in rotenone-induced Parkinson's disease (PD) with special reference to mitochondrial dysfunction mediated intrinsic apoptosis...
November 24, 2016: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/27871937/elevated-levels-of-alpha-synuclein-blunt-cellular-signal-transduction-downstream-of-gq-protein-coupled-receptors
#19
Mattia Volta, Alexandros A Lavdas, Julia Obergasteiger, Christa Überbacher, Anne Picard, Peter P Pramstaller, Andrew A Hicks, Corrado Corti
Alpha-synuclein is central to Parkinson's disease pathogenesis and pathology, however its precise functions are still unclear. It has been shown to bind both PLCβ1 and MAPKs, but how this property influences the downstream signaling of Gq protein-coupled receptors has not been elucidated. Here we show that recombinant expression of alpha-synuclein in human neuroblastoma cells enhances cellular levels of PLCβ1 but blunts its signaling pathway, preventing the agonist-dependent rise of cytoplasmic Ca(2+). In addition, overexpressing alpha-synuclein abolishes the activation of ERK1/2 upon agonist stimulation, indicating an upstream action in the signal transduction pathway...
November 18, 2016: Cellular Signalling
https://www.readbyqxmd.com/read/27866808/combined-beta-glucosylceramide-and-ambroxol-hydrochloride-in-patients-with-gaucher-related-parkinson-disease-from-clinical-observations-to-drug-development
#20
Yuval Ishay, Ari Zimran, Jeffrey Szer, Tama Dinur, Yaron Ilan, David Arkadir
Both patients with non-neuronopathic Gaucher disease (GD) and heterozygous GBA mutation carrier are at increased risk for Parkinson disease (PD). The risk for PD in these groups does not linearly increase with glucosylceramide (GC) accumulation or with acid β-glucocerebrosidase (GCase) activity. This observation, together with other clinical systemic observations raises the possibility that extra-cellular GC actually has beneficial, anti-inflammatory, properties. Based on this hypothesis, we suggest here that the administration of supplementary oral GC to GBA carriers at risk for PD may slow inflammatory-driven secondary neuronal death...
November 12, 2016: Blood Cells, Molecules & Diseases
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