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Parkinsons prevention

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https://www.readbyqxmd.com/read/28526446/thymoquinone-exerts-neuroprotective-effect-in-animal-model-of-parkinson-s-disease
#1
Seyedeh Shohreh Ebrahimi, Shahrbanoo Oryan, Esmael Izadpanah, Kambiz Hassanzadeh
Oxidative stress plays an important role in both the initiation and progression of Parkinson's disease (PD). Rotenone, an environmental toxin, induces oxidative stress and impact mitochondrial dynamics, including fission and fusion. Thymoquinone (TQ) has been reported to have antioxidant and anti-inflammatory characteristics in vitro and in vivo. TQ scavenges free radicals so prevents cell damage against oxidative agents. To evaluate the efficacy of TQ in the management of PD, male Wistar rats (8-10 months) received rotenone...
May 16, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28516276/p2x7-receptor-pannexin-1-interaction-mediates-extracellular-alpha-synuclein-induced-atp-release-in-neuroblastoma-sh-sy5y-cells
#2
Anna Wilkaniec, Magdalena Gąssowska, Grzegorz A Czapski, Magdalena Cieślik, Grzegorz Sulkowski, Agata Adamczyk
Abnormalities of alpha-synuclein (ASN), the main component of protein deposits (Lewy bodies), were observed in Parkinson's disease (PD), dementia with Lewy bodies, Alzheimer's disease, and other neurodegenerative disorders. These alterations include increase in the levels of soluble ASN oligomers in the extracellular space. Numerous works have identified several mechanisms of their toxicity, including stimulation of the microglial P2X7 receptor leading to oxidative stress. While the significant role of purinergic signaling-particularly, P2 family receptors-in neurodegenerative disorders is well known, the interaction of extracellular soluble ASN with neuronal purinergic receptors is yet to be studied...
May 17, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28513079/rem-sleep-behavior-disorder-in-parkinson-s-disease-and-other-synucleinopathies
#3
REVIEW
Erik K St Louis, Angelica R Boeve, Bradley F Boeve
Rapid eye movement sleep behavior disorder is characterized by dream enactment and complex motor behaviors during rapid eye movement sleep and rapid eye movement sleep atonia loss (rapid eye movement sleep without atonia) during polysomnography. Rapid eye movement sleep behavior disorder may be idiopathic or symptomatic and in both settings is highly associated with synucleinopathy neurodegeneration, especially Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and pure autonomic failure...
May 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28511257/characterizing-cognitive-impairment-in-parkinson-s-disease
#4
Meagan Bailey, Jennifer G Goldman
Cognitive impairment is a frequent complication in Parkinson's disease (PD), though it can be heterogeneous in its presentation and progression. Cognitive deficits vary among patients with regard to clinical features, severity, and progression to dementia. A growing recognition of cognitive impairment in PD in both the clinical and research settings has led to advances in diagnostic criteria and improved understanding of the clinical phenotypes, associated biomarkers, and underlying pathophysiology of both PD dementia and PD mild cognitive impairment...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28511252/diagnosis-and-management-of-parkinson-s-disease
#5
Arjun Tarakad, Joseph Jankovic
Despite numerous efforts to identify specific and sensitive biomarkers, the diagnosis of Parkinson's disease (PD) is still based on clinical criteria that include the presence of a combination of cardinal motor features (tremor, rigidity, bradykinesia, and postural instability), other motor features (including freezing of gait and abnormal postures), and numerous nonmotor features. In addition, the presence of atypical features may suggest an alternative diagnosis. Levodopa therapy remains the gold standard in the management of motor features of PD...
April 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28510647/epicardial-cardioverter-defibrillator-implantation-in-a-4-month-old-infant-bridged-to-heart-transplantation
#6
Cristina Carro, Alberto Francesco Cereda, Giuseppe Annoni, Stefano Maria Marianeschi
Implantable cardioverter-defibrillator (ICD) is the gold standard therapy for the prevention of sudden cardiac death. Nevertheless, ICD placement in the paediatric population is still limited because of several technical difficulties. Several implantation techniques have been proposed but experience in infants with very low weight and less than 6 months is very limited. We herein describe a case of a minimally invasive ICD epicardial implantation in a 4-month-old infant weighing 5 kg. A diagnosis of arrhythmic cardiomyopathy with left ventricular non-compaction disease with ventricular tachycardia storms, QT prolongation and Wolff-Parkinson-White pattern was made...
May 16, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28507584/effects-of-adenosine-receptor-antagonists-in-mptp-mouse-model-of-parkinson-s-disease-mitochondrial-dna-integrity
#7
Soha S Essawy, Mona Kamal Tawfik, Horya Erfan Korayem
INTRODUCTION: In Parkinson's disease (PD), compelling data indicate a functional link between adenosine/dopamine receptors and the progression of the neurodegenerative process. The present study was carried out to evaluate the effect of the non-selective adenosine receptor (ADR) antagonist caffeine, as well as the selective antagonists 8-cyclopentyl-1,3-dipropylxanthine (DPCPX), an ADRsA1 antagonist, and ((E)-1,3-diethyl-8-(3,4-dimethoxystyryl)-7-methyl-3,7-dihydro-1H-purine-2,6-dione) (KW-6002), an ADRsA2A antagonist, on the prevention of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced Parkinsonism in mice...
April 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28498720/protein-misfolding-amyloid-formation-and-human-disease-a-summary-of-progress-over-the-last-decade
#8
Fabrizio Chiti, Christopher M Dobson
Peptides and proteins have been found to possess an inherent tendency to convert from their native functional states into intractable amyloid aggregates. This phenomenon is associated with a range of increasingly common human disorders, including Alzheimer and Parkinson diseases, type II diabetes, and a number of systemic amyloidoses. In this review, we describe this field of science with particular reference to the advances that have been made over the last decade in our understanding of its fundamental nature and consequences...
May 12, 2017: Annual Review of Biochemistry
https://www.readbyqxmd.com/read/28493825/repetitive-transcranial-magnetic-stimulation-for-treatment-of-lactacystin-induced-parkinsonian-rat-model
#9
Maowen Ba, Guozhao Ma, Chao Ren, Xuwen Sun, Min Kong
The dysfunction of ubiquitin-proteasome system is an important pathogenesis in the neurodegenerative process of Parkinson's disease. Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive and potential method in treating Parkinson's disease. To investigate whether rTMS has neuroprotective effects in parkinsonian rat model induced by ubiquitin-proteasome system impairment, we gave rTMS daily for 4 weeks to proteasome inhibitor, lactacystin-induced parkinsonian rat model. Rotational behavior test demonstrated that rTMS obviously reduced apomorphine-induced turning number in parkinsonian rats...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28489058/the-neuroprotective-effects-of-phenolic-acids-molecular-mechanism-of-action
#10
Dominik Szwajgier, Kamila Borowiec, Katarzyna Pustelniak
The neuroprotective role of phenolic acids from food has previously been reported by many authors. In this review, the role of phenolic acids in ameliorating depression, ischemia/reperfusion injury, neuroinflammation, apoptosis, glutamate-induced toxicity, epilepsy, imbalance after traumatic brain injury, hyperinsulinemia-induced memory impairment, hearing and vision disturbances, Parkinson's disease, Huntington's disease, anti-amyotrophic lateral sclerosis, Chagas disease and other less distributed diseases is discussed...
May 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28476636/differential-effects-of-immunotherapy-with-antibodies-targeting-%C3%AE-synuclein-oligomers-and-fibrils-in-a-transgenic-model-of-synucleinopathy
#11
Omar El-Agnaf, Cassia Overk, Edward Rockenstein, Michael Mante, Jazmin Florio, Anthony Adame, Nishant Vaikath, Nour Majbour, Seung-Jae Lee, Changyoun Kim, Eliezer Masliah, Robert A Rissman
Disorders with progressive accumulation of α-synuclein (α-syn) are a common cause of dementia and parkinsonism in the aging population. Accumulation and propagation of α-syn play a role in the pathogenesis of these disorders. Previous studies have shown that immunization with antibodies that recognize C-terminus of α-syn reduces the intra-neuronal accumulation of α-syn and related deficits in transgenic models of synucleinopathy. These studies employed antibodies that recognize epitopes within monomeric and aggregated α-syn that were generated through active immunization or administered via passive immunization...
May 2, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28474543/neuroprotective-effects-of-citrus-fruit-derived-flavonoids-nobiletin-and-tangeretin-in-alzheimer-s-and-parkinson-s-disease
#12
Nady Braidy, Sahar Behzad, Solomon Habtemariam, Touqeer Ahmed, Maria Daglia, Seyed Mohammad Nabavi, Eduardo Sobarzo-Sanchez, Seyed Fazel Nabavi
Neurodegenerative diseases, namely Alzheimer`s disease and Parkinson's disease represent a deleterious impact worldwide. Despite extensive preclinical and clinical research in neurodegenerative disorders, therapeutic strategies aimed at the prevention and chronic treatment of neurodegenerative conditions have not been successfully translated to the clinic. Therefore, the identification of novel pharmacological intervention derived from natural products is warranted. Nobiletin and tangeretin are important citrus flavonoids derived from the peel and other parts of Citrus L...
March 27, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28471847/neuroprotective-effect-of-resveratrol-on-rotenone-treated-c57bl-6-mice
#13
Xiaofei Zhao, Jun Wang, Song Hu, Renping Wang, Yongjun Mao, Junxia Xie
The aim of the present study was to investigate whether resveratrol could reduce nigral iron levels to prevent the degeneration of dopaminergic neurons in the substantia nigra (SN) of C57BL/6 mice induced by rotenone. Parkinson's disease (PD) is an age-related neurodegenerative disorder; elevated iron levels in the SN participate in neuronal death in PD. Resveratrol is a kind of polyphenolic compounds and possess antioxidant, anticancer, and anti-inflammatory biological functions. Although many research groups have investigated the neuroprotective effects of resveratrol against PD, the precise mechanisms underlying its beneficial effects on dopaminergic neuron are poorly defined...
June 14, 2017: Neuroreport
https://www.readbyqxmd.com/read/28467497/molecular-hydrogen-protects-against-oxidative-stress-induced-sh-sy5y-neuroblastoma-cell-death-through-the-process-of-mitohormesis
#14
Yayoi Murakami, Masafumi Ito, Ikuroh Ohsawa
Inhalation of molecular hydrogen (H2) gas ameliorates oxidative stress-induced acute injuries in the brain. Consumption of water nearly saturated with H2 also prevents chronic neurodegenerative diseases including Parkinson's disease in animal and clinical studies. However, the molecular mechanisms underlying the remarkable effect of a small amount of H2 remain unclear. Here, we investigated the effect of H2 on mitochondria in cultured human neuroblastoma SH-SY5Y cells. H2 increased the mitochondrial membrane potential and the cellular ATP level, which were accompanied by a decrease in the reduced glutathione level and an increase in the superoxide level...
2017: PloS One
https://www.readbyqxmd.com/read/28466429/sleep-disturbances-in-the-prodromal-stage-of-parkinson-disease
#15
REVIEW
Ahmed Al-Qassabi, Seyed-Mohammad Fereshtehnejad, Ronald B Postuma
Decades of research on neurodegenerative diseases such as Parkinson's disease (PD) have shifted our focus from clinical symptomatic stages to one step earlier, the prodromal stage. There is convincing evidence showing that sleep disorders such as excessive daytime somnolence, insomnia, obstructive sleep apnea, and particularly REM sleep behavior disorder (RBD) are potential prodromal features starting years and decades before conversion to PD. This review aims to provide an overview on various sleep disorders as prodromal features of PD...
June 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28466271/exercise-as-a-positive-modulator-of-brain-function
#16
REVIEW
Karim A Alkadhi
Various forms of exercise have been shown to prevent, restore, or ameliorate a variety of brain disorders including dementias, Parkinson's disease, chronic stress, thyroid disorders, and sleep deprivation, some of which are discussed here. In this review, the effects on brain function of various forms of exercise and exercise mimetics in humans and animal experiments are compared and discussed. Possible mechanisms of the beneficial effects of exercise including the role of neurotrophic factors and others are also discussed...
May 2, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28458518/humanin-rescues-cultured-rat-cortical-neurons-from-nmda-induced-toxicity-through-the-alleviation-of-mitochondrial-dysfunction
#17
Ai-Ling Cui, Ying-Hua Zhang, Jian-Zhong Li, Tianbin Song, Xue-Min Liu, Hui Wang, Ce Zhang, Guo-Lin Ma, Hui Zhang, Kefeng Li
N-methyl-D-aspartate (NDMA) receptor-mediated excitotoxicity has been implicated in a variety of pathological situations such as Alzheimer's disease (AD) and Parkinson's disease. However, no effective treatments for the same have been developed so far. Humanin (HN) is a 24-amino acid peptide originally cloned from the brain of patients with AD and it prevents stress-induced cell death in many cells/tissues. In our previous study, HN was found to effectively rescue rat cortical neurons. It is still not clear whether HN protects the neurons through the attenuation of mitochondrial dysfunction...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28458020/signaling-by-growth-differentiation-factor-5-through-the-bone-morphogenetic-protein-receptor-type-ib-protects-neurons-against-kainic-acid-induced-neurodegeneration
#18
Yuanzheng Zhao, Min Zhang, Hengfang Liu, Jianping Wang
Growth/differentiation factor-5 (GDF-5), a member of the transforming growth factor-beta (TGF-β) superfamily, has been shown to protect rat dopaminergic neurons against insult both in embryonic neuronal culture and in Parkinson's disease models. However, whether GDF-5 exerts neuroprotective effects in hippocampal neurons is unclear. Here, we show that both mRNA levels and protein levels of GDF-5 are decreased in the mouse hippocampus upon kainic acid (KA) treatment. KA induced dramatic neuronal loss specifically in the cornu ammonis 1 (CA1) and CA3 areas of the mouse hippocampus, while intracerebral infusion of GDF-5 prevented this neuronal loss...
April 27, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28456940/mptp-mouse-model-of-preclinical-and-clinical-parkinson-s-disease-as-an-instrument-for-translational-medicine
#19
Eduard R Mingazov, Gulnara R Khakimova, Elena A Kozina, Alexei E Medvedev, Olga A Buneeva, Ara S Bazyan, Michael V Ugrumov
Parkinson's disease (PD) is characterized by the appearance of motor symptoms many years after the onset of neurodegeneration, which explains low efficiency of therapy. Therefore, one of the priorities in neurology is to develop an early diagnosis and preventive treatment of PD, based on knowledge of molecular mechanisms of neurodegeneration and neuroplasticity in the nigrostriatal system. However, due to inability to diagnose PD at preclinical stage, research and development must be performed in animal models by comparing the nigrostriatal system in the models of asymptomatic and early symptomatic stages of PD...
April 29, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28449871/sirt3-and-mitochondrial-metabolism-in-neurodegenerative-diseases
#20
REVIEW
Illari Salvatori, Cristiana Valle, Alberto Ferri, Maria Teresa Carrì
The NAD(+)-dependent deacetylase protein Sirtuin 3 (SIRT3) is emerging among the factors playing a key role in the regulation of mitochondrial function and in the prevention of oxidative stress. This deacetylase activates protein substrates directly involved in the production and detoxification of ROS, such as superoxide dismutase 2 and catalase, but also enzymes in the lipid beta-oxidation pathway. In this paper we review existing evidence on the role of SIRT3 in neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease and Huntington disease, including data from new experiments in a model for amyotrophic lateral sclerosis linked to mutations in superoxide dismutase 1...
April 25, 2017: Neurochemistry International
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