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Stress model for neurodegenerative disorders

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https://www.readbyqxmd.com/read/29783725/polyphenols-in-parkinson-s-disease-a-systematic-review-of-in-vivo-studies
#1
REVIEW
Małgorzata Kujawska, Jadwiga Jodynis-Liebert
Parkinson's disease (PD) is the second most common neurodegenerative disorder. However, therapeutic options treating only its symptoms are very disappointing. Therefore there is an ongoing search for compounds capable of tackling the multi-dimensional features of PD. Recently natural polyphenols have gained great interest as potential therapeutic agents. Herein, we have attempted to summarize results obtained in different animal models demonstrating their neuroprotective effects. The in vivo findings presented below are supported by human subject data and reports regarding the ability of polyphenols to cross the blood-brain barrier...
May 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29773347/lipophilic-methylene-blue-analogues-enhance-mitochondrial-function-and-increase-frataxin-levels-in-a-cellular-model-of-friedreich-s-ataxia
#2
Omar M Khdour, Indrajit Bandyopadhyay, Sandipan Roy Chowdhury, Nishant P Visavadiya, Sidney M Hecht
Friedreich's ataxia (FRDA) is an autosomal recessive neurodegenerative disorder resulting from reduced expression of the protein frataxin (FXN). Although its function is not fully understood, frataxin appears to help assemble iron sulfur clusters; these are critical for the function of many proteins, including those needed for mitochondrial energy production. Finding ways to increase FXN levels has been a major therapeutic strategy for this disease. Previously, we described a novel series of methylene violet analogues and their structural optimization as potential therapeutic agents for neurodegenerative and mitochondrial disorders...
May 4, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29743967/neuropharmacological-potential-and-delivery-prospects-of-thymoquinone-for-neurological-disorders
#3
REVIEW
Md Jakaria, Duk-Yeon Cho, Md Ezazul Haque, Govindarajan Karthivashan, In-Su Kim, Palanivel Ganesan, Dong-Kug Choi
Thymoquinone (TQ) is an active ingredient isolated from Nigella sativa and has various pharmacological activities, such as protection against oxidative stress, inflammation, and infections. In addition, it might be a potential neuropharmacological agent because it exhibits versatile potential for attenuating neurological impairments. It features greater beneficial effects in toxin-induced neuroinflammation and neurotoxicity. In various models of neurological disorders, it demonstrates emergent functions, including safeguarding various neurodegenerative diseases and other neurological diseases, such as stroke, schizophrenia, and epilepsy...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29710552/bergenia-ciliata-ameliorates-streptozotocin-induced-spatial-memory-deficits-through-dual-cholinesterase-inhibition-and-attenuation-of-oxidative-stress-in-rats
#4
Priyal Barai, Nisith Raval, Sanjeev Acharya, Niyati Acharya
Bergenia ciliata (Haw.) Sternb. rhizomes, family Saxifragaceae, are claimed to possess an array of beneficial effects like antioxidant, anti-inflammatory, immunomodulatory, antibacterial and anticancer activities. The plant has also been reported to be used by Nepalese folk to alleviate symptoms related to Parkinson's disease. Oxidative stress is one of the major reasons for cognitive decline observed in sporadic Alzheimer's disease (AD). Bergenia ciliata rhizomes have depicted potent antioxidant properties, but their role in the treatment of Alzheimer's disease is yet unexplored...
April 2, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29705839/stress-and-systemic-inflammation-yin-yang-dynamics-in-health-and-diseases
#5
Qing Yan
Studies in psychoneuroimmunology (PNI) would provide better insights into the "whole mind-body system." Systems biology models of the complex adaptive systems (CASs), such as a conceptual framework of "Yin-Yang dynamics," may be helpful for identifying systems-based biomarkers and targets for more effective prevention and treatment. The disturbances in the Yin-Yang dynamical balance may result in stress, inflammation, and various disorders including insomnia, Alzheimer's disease, obesity, diabetes, cardiovascular diseases, skin disorders, and cancer...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29679909/mechanisms-of-the-active-components-from-korean-pine-nut-preventing-and-treating-d-galactose-induced-aging-rats
#6
Jianmei Zhang, Weiwei Lin, Ruijun Wu, Yanmeng Liu, Kai Zhu, Jinyu Ren, Sufang Zhang, Xiaomei Ling
Age-related neuronal injury and oxidative damage are the predominant factors for neurodegenerative diseases like Alzheimer's disease (AD). The aim of this study was to explore whether chronic administration of d-galactose (d-gal) can cause neuronal injury and oxidative damage, and to investigate the neuroprotective and antioxidative effects of the active components (UPNO-1) from Korean pine nut (Pinus koraiensis). Two dosing regimens were designed, one for the evaluation of preventive effects in which the rats were simultaneously administrated d-gal and UPNO-1/fishoil for 12 weeks, the other for the evaluation of therapeutic effects in which the rats were given d-gal for 8 weeks before treated with UPNO-1/selegiline for 8 weeks...
April 18, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29670521/the-prenylflavonoid-xanthohumol-reduces-alzheimer-like-changes-and-modulates-multiple-pathogenic-molecular-pathways-in-the-neuro2a-app-swe-cell-model-of-ad
#7
Xianfeng Huang, Jing Wang, Xiao Chen, Pan Liu, Shujin Wang, Fangchen Song, Zaijun Zhang, Feiqi Zhu, Xinfeng Huang, Jianjun Liu, Guoqiang Song, Peter S Spencer, Xifei Yang
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that has proved refractory to drug treatment. Given evidence of neuroprotection in animal models of ischemic stroke, we assessed the prenylflavonoid xanthohumol from the Common Hop ( Humulus lupulus L.) for therapeutic potential in murine neuroblastoma N2a cells stably expressing human Swedish mutant amyloid precursor protein (N2a/APP), a well-characterized cellular model of AD. The ELISA and Western-blot analysis revealed that xanthohumol (Xn) inhibited Aβ accumulation and APP processing, and that Xn ameliorated tau hyperphosphorylation via PP2A, GSK3β pathways in N2a/APP cells...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29653138/neuroprotective-action-of-4-hydroxyisophthalic-acid-against-paraquat-induced-motor-impairment-involves-amelioration-of-mitochondrial-damage-and-neurodegeneration-in-drosophila
#8
Niveditha S, T Shivanandappa
Neurodegenerative disorders including Parkinson's disease (PD) are believed to be caused by oxidative stress and mitochondrial dysfunction. Exposure to environmental agents such as pesticides has been implicated in the etiology of sporadic PD. Paraquat (PQ), a widely used herbicide, induces PD symptoms in laboratory animals including Drosophila. PQ acts as a free radical generator and induces oxidative damage, which is implicated in neuronal cell death. Drosophila model of PQ-induced PD offers a convenient tool for mechanistic studies and, to assess the neuroprotective potential of natural antioxidants...
April 10, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29605485/a-camp-analog-attenuates-beta-amyloid-1-42-induced-mitochondrial-dysfunction-and-spatial-learning-and-memory-deficits
#9
Mehdi Aghsami, Mohammad Sharifzadeh, Mohammad Reza Sepand, Meysam Yazdankhah, Seyed Afshin Seyednejad, Jalal Pourahmad
Alzheimer's disease (AD), a neurodegenerative disorder in elderly, is indicated with deposition of Amyloid β (Aβ) in the brain and accompanied with cognitive impairment. Bucladesine, a phosphodiesterase inhibitor, may ameliorate AD's cognitive dysfunctions through mimicking the action of cAMP and raising its intracellular level. Here, we investigated the effects of bucladesine on Aβ-induced memory and learning impairment in a Morris water maze (MWM) model. Rats were injected with bucladesine (1 μl/side from a 100 μM stock solution) and Aβ (1 μl/side from a 100 μM stock solution) intra-hippocampally and after 19 days were trained for 4 successive days...
March 29, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29593121/proteomic-analysis-of-human-glutathione-transferase-omega-hgsto1-stable-transfection-in-a-6-hydroxydopamine-induced-neuronal-cells
#10
Jeerang Wongtrakul, Chonticha Saisawang, Benjawan Kumrapich, Jiraprapa Wipasa, Sittiruk Roytrakul, Albert J Ketterman
Parkinson's disease is the second most common neurodegenerative disorder after Alzheimer's disease. The disease is associated with dopaminergic neuron losses in the substantia nigra area of the brain and the formation of cytoplasmic inclusion bodies. Human glutathione transferase omega 1 (hGSTO1) appears to have a role in modulating stress response. The study was aimed to elucidate differentially expressed proteins caused by oxidative stress induced by 6-hydroxydopamine (6-OHDA). Human neuronal cells SH-SY5Y overexpressing hGSTO1 were used to investigate protein glutathionylation and the modulation of cellular protein expression...
March 2018: General Physiology and Biophysics
https://www.readbyqxmd.com/read/29577894/bilateral-quinolinic-acid-induced-lipid-peroxidation-decreased-striatal-monoamine-levels-and-neurobehavioral-deficits-are-ameliorated-by-gip-receptor-agonist-d-ala-2-gip-in-rat-model-of-huntington-s-disease
#11
Mahip K Verma, Rajan Goel, Krishnadas Nandakumar, Kumar V S Nemmani
Huntington's disease (HD) is an inherited complex progressive neurodegenerative disorder with an established etiopathology linked to neuronal oxidative stress and corticostriatal excitotoxicity. Present study explores the effects of glucose-dependent insulinotropic polypeptide (GIP) receptor agonist on the neurobehavioral sequelae of quinolinic acid-induced phenotype of Huntington's disease in rats. Bilateral administration of quinolinic acid (300 nmol/4µL) to the rat striatum led to characteristic deficits in, locomotor activity, motor coordination, neuromuscular coordination and short-term episodic memory...
March 22, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29570846/neuroprotective-effects-of-creatine-in-the-cmvmjd135-mouse-model-of-spinocerebellar-ataxia-type-3
#12
Sara Duarte-Silva, Andreia Neves-Carvalho, Carina Soares-Cunha, Joana M Silva, Andreia Teixeira-Castro, Rita Vieira, Anabela Silva-Fernandes, Patrícia Maciel
BACKGROUND AND OBJECTIVE: Mitochondrial dysfunction has been implicated in several neurodegenerative diseases. Creatine administration increases concentration of the energy buffer phosphocreatine, exerting protective effects in the brain. We evaluate whether a creatine-enriched diet would be beneficial for a mouse model of spinocerebellar ataxia type 3, a genetically defined neurodegenerative disease for which no treatment is available. METHODS: We performed 2 independent preclinical trials using the CMVMJD135 mouse model (treating 2 groups of animals with different disease severity) and wild-type mice, to which 2% creatine was provided for 19 (preclinical trial 1) or 29 (preclinical trial 2) weeks, starting at a presymptomatic age...
March 23, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29567422/neuroprotective-effect-of-idpu-1-7-imino-3-propyl-2-3-dihydrothiazolo-4-5-d-pyrimidin-6-7h-yl-urea-in-6-ohda-induced-rodent-model-of-hemiparkinson-s-disease
#13
Namrata Kumari, Saurabh Agrawal, Rita Kumari, Dimpy Sharma, Pratibha Mehta Luthra
Parkinson's disease (PD) is a progressive neurodegenerative motor disorder characterized by the degeneration of dopaminergic nigrostriatal neurons. Levodopa (l-DOPA) is the most effective therapy for PD, however, PD progression continues with significant side effects in long term, thus necessitating the search for effective therapy that impedes PD progression. PD therapy through non-dopaminergic pathways offers treatment without the risk of extrapyramidal effects. In this regard, earlier, we had reported, a novel compound IDPU with potential adenosine A2A receptor antagonist effect in haloperidol (chronic treatment) induced Parkinson model...
May 14, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29563870/early-life-stress-does-not-aggravate-spatial-memory-or-the-process-of-hippocampal-neurogenesis-in-adult-and-middle-aged-app-ps1-mice
#14
Lianne Hoeijmakers, Anna Amelianchik, Fleur Verhaag, Janssen Kotah, Paul J Lucassen, A Korosi
Life-time experiences are thought to influence the risk to develop the neurodegenerative disorder Alzheimer's disease (AD). In particular, early-life stress (ES) may modulate the onset and progression of AD. There is recent evidence by our group and others that AD-related neuropathological progression and the associated neuroimmune responses are modulated by ES in the classic APPswe/PS1dE9 mouse model for AD. We here extend our previous study on ES mediated modulation of neuropathology and neuroinflammation and address in the same cohort of mice whether ES accelerates and/or aggravates AD-induced cognitive decline and alterations in the process of adult hippocampal neurogenesis (AHN), a form of brain plasticity...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29559387/endurance-exercise-mediates-neuroprotection-against-mptp-mediated-parkinson-s-disease-via-enhanced-neurogenesis-antioxidant-capacity-and-autophagy
#15
Yongchul Jang, Insu Kwon, Wankeun Song, Ludmila M Cosio-Lima, Youngil Lee
Parkinson's disease (PD) is a neurodegenerative disorder caused by loss of dopaminergic neurons in the substantia nigra, leading to motor dysfunction. Growing evidence has demonstrated that endurance exercise (EE) confers neuroprotection against PD. However, the exact molecular mechanisms responsible for exercise-induced protection of dopaminergic neurons in PD remain unclear. Since oxidative stress plays a key role in the degenerative process of PD. We investigated whether EE-induced neuroprotection is associated with enhanced antioxidative capacity and autophagy, using a mouse model of PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration...
May 21, 2018: Neuroscience
https://www.readbyqxmd.com/read/29529199/superoxide-dismutating-molecules-rescue-the-toxic-effects-of-pink1-and-parkin-loss
#16
Alice Biosa, Alvaro Sanchez-Martinez, Roberta Filograna, Ana Terriente-Felix, Sarah M Alam, Mariano Beltramini, Luigi Bubacco, Marco Bisaglia, Alexander J Whitworth
Reactive oxygen species exert important functions in regulating several cellular signalling pathways. However, an excessive accumulation of reactive oxygen species can perturb the redox homeostasis leading to oxidative stress, a condition which has been associated to many neurodegenerative disorders. Accordingly, alterations in the redox state of cells and mitochondrial homeostasis are established hallmarks in both familial and sporadic Parkinson's disease cases. PINK1 and Parkin are two genes which account for a large fraction of autosomal recessive early-onset forms of Parkinson's disease and are now firmly associated to both mitochondria and redox homeostasis...
May 1, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29524599/a-stress-enhanced-model-for-discovery-of-disease-modifying-gene-ece1-suppresses-the-toxicity-of-%C3%AE-synuclein-a30p
#17
Alex Yen-Yu Chen, Tim Tully
Parkinson's disease (PD) is a progressive motor neurodegenerative disorder, characterized by a selective loss of dopaminergic neurons in the substantia nigra. The complexity of disease etiology includes both genetic and environmental factors. No effective drug that can modify disease progression and protect dopamine neurons from degeneration is presently available. Human α-Synuclein A30P (A30P) is a mutant gene identified in early onset PD and showed to result selective dopamine neuron loss in transgenic A30P flies and mice...
June 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29520722/human-umbilical-cord-matrix-stem-cells-reverse-oxidative-stress-induced-cell-death-and-ameliorate-motor-function-and-striatal-atrophy-in-rat-model-of-huntington-disease
#18
Mohammad Javad Ebrahimi, Abbas Aliaghaei, Mahdi Eskandarian Boroujeni, Fariba Khodagholi, Gholamhoussein Meftahi, Mohammad Amin Abdollahifar, Houssein Ahmadi, Samira Danyali, Mahtab Daftari, Yousef Sadeghi
Huntington disease (HD) is an inherited disorder hallmarked by progressive deterioration of specific neurons, followed by movement and cognitive anomalies. Cell therapy approaches in neurodegenerative conditions have concentrated on the replenishment of lost/dying neurons with functional ones. Multipotent mesenchymal stem cells (MSCs) have been represented as a potential remedy for HD. In this study, we evaluated the in vitro and in vivo efficacy of umbilical cord matrix stem cells (UCMSCs) and their paracrine effect against oxidative stress with a specific focus on HD...
March 8, 2018: Neurotoxicity Research
https://www.readbyqxmd.com/read/29515358/modeling-protein-aggregation-and-the-heat-shock-response-in-als-ipsc-derived-motor-neurons
#19
Emily R Seminary, Samantha L Sison, Allison D Ebert
Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disorder caused by the selective loss of the upper and lower motor neurons. Only 10% of all cases are caused by a mutation in one of the two dozen different identified genes, while the remaining 90% are likely caused by a combination of as yet unidentified genetic and environmental factors. Mutations in C9orf72, SOD1 , or TDP-43 are the most common causes of familial ALS, together responsible for at least 60% of these cases. Remarkably, despite the large degree of heterogeneity, all cases of ALS have protein aggregates in the brain and spinal cord that are immunopositive for SOD1, TDP-43, OPTN, and/or p62...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29499067/increased-risk-of-overactive-bladder-in-patients-with-idiopathic-parkinson-s-disease-insight-from-a-nationwide-population-based-cohort-study
#20
Fu-Yu Lin, Yi-Chien Yang, Cheng-Li Lin, Lukas Jyuhn-Hsiarn Lee
BACKGROUND: Idiopathic Parkinson's disease (IPD) is a progressive neurodegenerative disorder characterized by typical motor impairment. However, lower urinary tract symptoms, including urinary urgency or frequency, which are non-motor phenomena, occur frequently among patients with IPD. In this study, we assess the risk of overactive bladder (OAB) in patients with IPD. METHODS: The National Health Insurance Research Database of Taiwan was used to identify patients with IPD (IPD cohort) and four-fold controls (non-IPD cohort) from 2000 to 2010...
2018: PloS One
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