451
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Ortega-Arellano HF, Jimenez-Del-Rio M, Velez-Pardo C. Dmp53, basket and drICE gene knockdown and polyphenol gallic acid increase life span and locomotor activity in a Drosophila Parkinson's disease model. Genet Mol Biol 2013; 36:608-15. [PMID: 24385865 PMCID: PMC3873193 DOI: 10.1590/s1415-47572013000400020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 10/08/2013] [Indexed: 12/22/2022] Open
Abstract
Understanding the mechanism(s) by which dopaminergic (DAergic) neurons are eroded in Parkinson's disease (PD) is critical for effective therapeutic strategies. By using the binary tyrosine hydroxylase (TH)-Gal4/UAS-X RNAi Drosophila melanogaster system, we report that Dmp53, basket and drICE gene knockdown in dopaminergic neurons prolong life span (p < 0.05; log-rank test) and locomotor activity (p < 0.05; χ(2) test) in D. melanogaster lines chronically exposed to (1 mM) paraquat (PQ, oxidative stress (OS) generator) compared to untreated transgenic fly lines. Likewise, knockdown flies displayed higher climbing performance than control flies. Amazingly, gallic acid (GA) significantly protected DAergic neurons, ameliorated life span, and climbing abilities in knockdown fly lines treated with PQ compared to flies treated with PQ only. Therefore, silencing specific gene(s) involved in neuronal death might constitute an excellent tool to study the response of DAergic neurons to OS stimuli. We propose that a therapy with antioxidants and selectively "switching off" death genes in DAergic neurons could provide a means for pre-clinical PD individuals to significantly ameliorate their disease condition.
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Affiliation(s)
- Hector Flavio Ortega-Arellano
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, University of Antioquia, Medellin, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, University of Antioquia, Medellin, Colombia
| | - Carlos Velez-Pardo
- Neuroscience Research Group, Medical Research Institute, Faculty of Medicine, University of Antioquia, Medellin, Colombia
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452
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Affiliation(s)
- Julie K Andersen
- Buck Institute for Research on Aging, 8001 Redwood Blvd, Novato, CA 94945, USA.
| | - Kelvin J A Davies
- Ethel Percy Andrus Gerontology Center of the Davis School of Gerontology and Division of Molecular and Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts & Sciences, University of Southern California, Los Angeles, California 90089, USA
| | - Henry Jay Forman
- University of California, Merced, Merced, California 95343, USA; Ethel Percy Andrus Gerontology Center of the Davis School of Gerontology and Division of Molecular and Computational Biology, Department of Biological Sciences of the Dornsife College of Letters, Arts & Sciences, University of Southern California, Los Angeles, California 90089, USA
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453
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Affiliation(s)
- Freya Kamel
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.
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454
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de Araújo DP, De Sousa CNS, Araújo PVP, Menezes CEDS, Sousa Rodrigues FT, Escudeiro SS, Lima NBC, Patrocínio MCA, Aguiar LMV, Viana GSDB, Vasconcelos SMM. Behavioral and neurochemical effects of alpha-lipoic Acid in the model of Parkinson's disease induced by unilateral stereotaxic injection of 6-ohda in rat. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2013; 2013:571378. [PMID: 24023579 PMCID: PMC3760123 DOI: 10.1155/2013/571378] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 06/09/2013] [Indexed: 12/13/2022]
Abstract
This study aimed to investigate behavioral and neurochemical effects of α -lipoic acid (100 mg/kg or 200 mg/kg) alone or associated with L-DOPA using an animal model of Parkinson's disease induced by stereotaxic injection of 6-hydroxydopamine (6-OHDA) in rat striatum. Motor behavior was assessed by monitoring body rotations induced by apomorphine, open field test and cylinder test. Oxidative stress was accessed by determination of lipid peroxidation using the TBARS method, concentration of nitrite and evaluation of catalase activity. α -Lipoic acid decreased body rotations induced by apomorphine, as well as caused an improvement in motor performance by increasing locomotor activity in the open field test and use of contralateral paw (in the opposite side of the lesion produced by 6-OHDA) at cylinder test. α -lipoic acid showed antioxidant effects, decreasing lipid peroxidation and nitrite levels and interacting with antioxidant system by decreasing of endogenous catalase activity. Therefore, α -lipoic acid prevented the damage induced by 6-OHDA or by chronic use of L-DOPA in dopaminergic neurons, suggesting that α -lipoic could be a new therapeutic target for Parkinson's disease prevention and treatment.
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Affiliation(s)
- Dayane Pessoa de Araújo
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Caren Nádia Soares De Sousa
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Paulo Victor Pontes Araújo
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Carlos Eduardo de Souza Menezes
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Francisca Taciana Sousa Rodrigues
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Sarah Souza Escudeiro
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | | | | | - Lissiana Magna Vasconcelos Aguiar
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Glauce Socorro de Barros Viana
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
| | - Silvânia Maria Mendes Vasconcelos
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Rua Cel. Nunes de Melo 1127, 60431-270 Fortaleza, CE, Brazil
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455
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Li B, Yu D, Xu Z. Edaravone prevents neurotoxicity of mutant L166P DJ-1 in Parkinson's disease. J Mol Neurosci 2013; 51:539-49. [PMID: 23657982 DOI: 10.1007/s12031-013-0022-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/22/2013] [Indexed: 11/30/2022]
Abstract
Parkinson's disease (PD), which is estimated to affect approximately 1 % of the population over the age of 65, is the second most common neurodegenerative disorder after Alzheimer's disease. It was reported that pathogenic mutations in DJ-1 lead to autosomal recessive early-onset familial Parkinsonism. The L166P mutant of DJ-1 is the most commonly studied loss-of-function mutation in early onset familial PD, but the underlying mechanisms are still unknown. Edaravone is a powerful free radical scavenger used in clinical treatment for cerebral ischemic stroke. In the present study, we investigated the effects of edaravone on the neurotoxicity in PD-induced isoforms of DJ-1 containing the mutation L166P. Our results indicated that edaravone was able to significantly attenuate oxidative stress and improve mitochondrial function. Furthermore, edaravone was found to reduce apoptosis in Neuro2a cells through modulation of mitochondria-dependent apoptosis pathways. Interestingly, our result also demonstrated that edaravone was able to up-regulate VMAT2 expression in N2a cells in a dose-dependent manner. Our findings enhance the understanding of the neuro-protective effects of edaravone in cell models and suggest that edaravone offers significant protection in a PD-related in vitro model.
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Affiliation(s)
- Bing Li
- Department of Neurology, Yantai Yuhuangding Hospital of Medical College of Qingdao University, Yantai, Shandong, 264000, People's Republic of China,
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456
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Dias V, Junn E, Mouradian MM. The role of oxidative stress in Parkinson's disease. JOURNAL OF PARKINSON'S DISEASE 2013; 3:461-91. [PMID: 24252804 PMCID: PMC4135313 DOI: 10.3233/jpd-130230] [Citation(s) in RCA: 1055] [Impact Index Per Article: 95.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidative stress plays an important role in the degeneration of dopaminergic neurons in Parkinson's disease (PD). Disruptions in the physiologic maintenance of the redox potential in neurons interfere with several biological processes, ultimately leading to cell death. Evidence has been developed for oxidative and nitrative damage to key cellular components in the PD substantia nigra. A number of sources and mechanisms for the generation of reactive oxygen species (ROS) are recognized including the metabolism of dopamine itself, mitochondrial dysfunction, iron, neuroinflammatory cells, calcium, and aging. PD causing gene products including DJ-1, PINK1, parkin, alpha-synuclein and LRRK2 also impact in complex ways mitochondrial function leading to exacerbation of ROS generation and susceptibility to oxidative stress. Additionally, cellular homeostatic processes including the ubiquitin-proteasome system and mitophagy are impacted by oxidative stress. It is apparent that the interplay between these various mechanisms contributes to neurodegeneration in PD as a feed forward scenario where primary insults lead to oxidative stress, which damages key cellular pathogenetic proteins that in turn cause more ROS production. Animal models of PD have yielded some insights into the molecular pathways of neuronal degeneration and highlighted previously unknown mechanisms by which oxidative stress contributes to PD. However, therapeutic attempts to target the general state of oxidative stress in clinical trials have failed to demonstrate an impact on disease progression. Recent knowledge gained about the specific mechanisms related to PD gene products that modulate ROS production and the response of neurons to stress may provide targeted new approaches towards neuroprotection.
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Affiliation(s)
- Vera Dias
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Eunsung Junn
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - M. Maral Mouradian
- Center for Neurodegenerative and Neuroimmunologic Diseases, Department of Neurology, Rutgers - Robert Wood Johnson Medical School, Piscataway, NJ, USA
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