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https://www.readbyqxmd.com/read/28547771/translation-of-wnt-developmental-programs-into-stem-cell-replacement-strategies-for-the-treatment-of-parkinson-s-disease
#1
REVIEW
Enrique M Toledo, Daniel Gyllborg, Ernest Arenas
Wnt signalling is a highly conserved pathway across species that is critical for normal development and is deregulated in multiple diseases including cancer and neurodegeneration. Wnt signalling is critically required for midbrain dopaminergic (mDA) neuron development and maintenance. Understanding the molecular processes controlled by Wnt signalling may thus hold the key to understand the physiopathology and to develop novel therapies aimed at preventing the loss of mDA neurons in Parkinson's disease (PD)...
May 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28544038/supplementation-with-herbal-extracts-to-promote-behavioral-and-neuroprotective-effects-in-experimental-models-of-parkinson-s-disease-a-systematic-review
#2
REVIEW
Ianara Mendonça da Costa, José Rodolfo Lopes de Paiva Cavalcanti, Dinalva Brito de Queiroz, Eduardo Pereira de Azevedo, Amália Cinthia Meneses do Rêgo, Irami Araújo Filho, Paulo Parente, Marco Antônio Botelho, Fausto Pierdoná Guzen
Parkinson's disease (PD) consists of a neurodegenerative pathology that has received a considerable amount of attention because of its clinical manifestations. The most common treatment consists of administering the drugs levodopa and biperiden, which reduce the effectiveness of the disease and the progress of its symptoms. However, phytotherapy treatment of PD has shown great potential in retarding the loss of dopaminergic neurons and minimizing the behavioral abnormalities. The aim of this study is to systematically review the use of supplemental herbal plants with cellular protective effect and behavioral activity in in vivo and in vitro experimental models...
May 22, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28543680/downregulation-of-mir-7116-5p-in-microglia-by-mpp-sensitizes-tnf-%C3%AE-production-to-induce-dopaminergic-neuron-damage
#3
Qian He, Qing Wang, Chao Yuan, Yizheng Wang
Activation of microglia resulting in exacerbated inflammation expression plays an important role in degeneration of dopaminergic (DA) neurons in the pathogenesis of Parkinson's disease (PD). However, how this enhanced inflammation is induced in microglia remains largely unclear. Here, in the mouse PD model induced by 1-methyl-4-phenyl-1,2,3,6-tetra hydropyridine (MPTP), we found that miR-7116-5p in microglia has a crucial role in this inflammation. 1-methyl-4-phenylpyridinium (MPP(+) ) is uptaken by microglia through organic cation transporter 3 (OCT3) to downregulate miR-7116-5p, an miRNA found to target tumor necrosis factor alpha (TNF-α)...
May 22, 2017: Glia
https://www.readbyqxmd.com/read/28539529/membrane-trafficking-illuminates-a-path-to-parkinson-s-disease
#4
Takafumi Hasegawa, Naoto Sugeno, Akio Kikuchi, Toru Baba, Masashi Aoki
Parkinson's disease (PD) is the second most common neurodegenerative disorder that is characterized by progressive movement disability and a variety of non-motor symptoms. The neuropathology of PD consists of the loss of dopaminergic neurons in the midbrain and the appearance of neuronal inclusions called Lewy bodies, which contain insoluble α-synuclein, a relatively small protein originally identified in association with synaptic vesicles in the presynaptic nerve terminals. Drugs that replenish dopamine can partly alleviate the motor symptoms, but they do not cure the disease itself...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28536273/metal-transporter-zip14-slc39a14-deletion-in-mice-increases-manganese-depositionnd-produces-neurotoxic-signaturesnd-diminished-motorctivity
#5
Tolunay Bekerydemir, Min-Hyun Kim, Jinhee Kim, Luis M Colon-Perez, Guita Banan, Thomas H Mareci, Marcelo Febo, Robert J Cousins
Mutations in human ZIP14 have been linked to symptoms of early onset of Parkinsonismnd Dystonia. This phenotype is likely related to excess manganeseccumulation in the central nervous system. The metal transporter ZIP14 (SLC39A14) is viewed primarilys zinc transporter that is inducible via proinflammatory stimuli. In vitro evidence shows that ZIP14 canlso transport manganese. To examine role for ZIP14 in manganese homeostasis, we used Zip14 knockout (KO) malend female mice to conduct comparative metabolic, imagingnd functional studies...
May 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28534084/the-emerging-link-between-o-glcnacylation-and-neurological-disorders
#6
REVIEW
Xiaofeng Ma, He Li, Yating He, Junwei Hao
O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) is involved in the regulation of many cellular cascades and neurological diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and stroke. In the brain, the expression of O-GlcNAcylation is notably heightened, as is that of O-linked N-acetylglucosaminyltransferase (OGT) and β-N-acetylglucosaminidase (OGA), the presence of which is prominent in many regions of neurological importance. Most importantly, O-GlcNAcylation is believed to contribute to the normal functioning of neurons; conversely, its dysregulation participates in the pathogenesis of neurological disorders...
May 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28526446/thymoquinone-exerts-neuroprotective-effect-in-animal-model-of-parkinson-s-disease
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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