101
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Pantic I, Cumic J, Skodric SR, Dugalic S, Brodski C. Oxidopamine and oxidative stress: Recent advances in experimental physiology and pharmacology. Chem Biol Interact 2021; 336:109380. [PMID: 33450287 DOI: 10.1016/j.cbi.2021.109380] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/01/2021] [Accepted: 01/10/2021] [Indexed: 12/20/2022]
Abstract
Oxidopamine (6-hydroxydopamine, 6-OHDA) is a toxin commonly used for the creation of experimental animal models of Parkinson's disease, attention-deficit hyperactivity disorder, and Lesch-Nyhan syndrome. Its exact mechanism of action is not completely understood, although there are many indications that it is related to the generation of reactive oxygen species (ROS), primarily in dopaminergic neurons. In certain experimental conditions, oxidopamine may also cause programmed cell death via various signaling pathways. Oxidopamine may also have a significant impact on chromatin structure and nuclear structural organization in some cells. Today, many researchers use oxidopamine-associated oxidative damage to evaluate different antioxidant-based pharmacologically active compounds as drug candidates for various neurological and non-neurological diseases. Additional research is needed to clarify the exact biochemical pathways associated with oxidopamine toxicity, related ROS generation and apoptosis. In this short review, we focus on the recent research in experimental physiology and pharmacology, related to the cellular and animal experimental models of oxidopamine - mediated toxicity.
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Affiliation(s)
- Igor Pantic
- University of Belgrade, Faculty of Medicine, Dr Subotica 8, RS-11129, Belgrade, Serbia; University of Haifa, 199 Abba Hushi Blvd, Mount Carmel, Haifa, IL-3498838, Israel; Institute of medical physiology, Visegradska 26/II, RS-11129, Belgrade, Serbia.
| | - Jelena Cumic
- University of Belgrade, Faculty of Medicine, Dr Subotica 8, RS-11129, Belgrade, Serbia; Clinical Center of Serbia, Dr. KosteTodorovića 8, RS-11129, Belgrade, Serbia
| | | | - Stefan Dugalic
- Clinical Center of Serbia, Dr. KosteTodorovića 8, RS-11129, Belgrade, Serbia
| | - Claude Brodski
- Ben-Gurion University of the Negev, Zlotowski Center for Neuroscience, Faculty of Health Sciences, Department of Physiology and Cell Biology, P.O.B. 653, Beersheba, Israel
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102
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Zhao F, Austria Q, Wang W, Zhu X. Mfn2 Overexpression Attenuates MPTP Neurotoxicity In Vivo. Int J Mol Sci 2021; 22:ijms22020601. [PMID: 33435331 PMCID: PMC7827738 DOI: 10.3390/ijms22020601] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial dysfunction represents a critical event in the pathogenesis of Parkinson’s disease (PD). Increasing evidence demonstrates that disturbed mitochondrial dynamics and quality control play an important role in mitochondrial dysfunction in PD. Our previous study demonstrated that MPP+ induces mitochondrial fragmentation in vitro. In this study, we aimed to assess whether blocking MPTP-induced mitochondrial fragmentation by overexpressing Mfn2 affords neuroprotection in vivo. We found that the significant loss of dopaminergic neurons in the substantia nigra (SN) induced by MPTP treatment, as seen in wild-type littermate control mice, was almost completely blocked in mice overexpressing Mfn2 (hMfn2 mice). The dramatic reduction in dopamine neuronal fibers and dopamine levels in the striatum caused by MPTP administration was also partially inhibited in hMfn2 mice. MPTP-induced oxidative stress and inflammatory response in the SN and striatum were significantly alleviated in hMfn2 mice. The impairment of motor function caused by MPTP was also blocked in hMfn2 mice. Overall, our work demonstrates that restoration of mitochondrial dynamics by Mfn2 overexpression protects against neuronal toxicity in an MPTP-based PD mouse model, which supports the modulation of mitochondrial dynamics as a potential therapeutic target for PD treatment.
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103
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Gao R, Peng X, Perry C, Sun H, Ntokou A, Ryu C, Gomez JL, Reeves BC, Walia A, Kaminski N, Neumark N, Ishikawa G, Black KE, Hariri LP, Moore MW, Gulati M, Homer RJ, Greif DM, Eltzschig HK, Herzog EL. Macrophage-derived netrin-1 drives adrenergic nerve-associated lung fibrosis. J Clin Invest 2021; 131:136542. [PMID: 33393489 PMCID: PMC7773383 DOI: 10.1172/jci136542] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 09/10/2020] [Indexed: 12/12/2022] Open
Abstract
Fibrosis is a macrophage-driven process of uncontrolled extracellular matrix accumulation. Neuronal guidance proteins such as netrin-1 promote inflammatory scarring. We found that macrophage-derived netrin-1 stimulates fibrosis through its neuronal guidance functions. In mice, fibrosis due to inhaled bleomycin engendered netrin-1-expressing macrophages and fibroblasts, remodeled adrenergic nerves, and augmented noradrenaline. Cell-specific knockout mice showed that collagen accumulation, fibrotic histology, and nerve-associated endpoints required netrin-1 of macrophage but not fibroblast origin. Adrenergic denervation; haploinsufficiency of netrin-1's receptor, deleted in colorectal carcinoma; and therapeutic α1 adrenoreceptor antagonism improved collagen content and histology. An idiopathic pulmonary fibrosis (IPF) lung microarray data set showed increased netrin-1 expression. IPF lung tissues were enriched for netrin-1+ macrophages and noradrenaline. A longitudinal IPF cohort showed improved survival in patients prescribed α1 adrenoreceptor blockade. This work showed that macrophages stimulate lung fibrosis via netrin-1-driven adrenergic processes and introduced α1 blockers as a potentially new fibrotic therapy.
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Affiliation(s)
- Ruijuan Gao
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Oncology, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xueyan Peng
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Carrighan Perry
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Huanxing Sun
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Aglaia Ntokou
- Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Changwan Ryu
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Jose L. Gomez
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Benjamin C. Reeves
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Anjali Walia
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Nir Neumark
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Genta Ishikawa
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Lida P. Hariri
- Division of Pulmonary and Critical Care Medicine, and
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Meagan W. Moore
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Mridu Gulati
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Robert J. Homer
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Pathology, and
| | - Daniel M. Greif
- Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
| | - Holger K. Eltzschig
- Department of Anesthesiology, University of Texas at Houston Medical School, Houston, Texas, USA
| | - Erica L. Herzog
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Pathology, and
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104
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Kesh S, Kannan RR, Balakrishnan A. Naringenin alleviates 6-hydroxydopamine induced Parkinsonism in SHSY5Y cells and zebrafish model. Comp Biochem Physiol C Toxicol Pharmacol 2021; 239:108893. [PMID: 32949818 DOI: 10.1016/j.cbpc.2020.108893] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/01/2020] [Accepted: 09/09/2020] [Indexed: 01/05/2023]
Abstract
6-Hydroxydopamine (6-OHDA) is a neurotoxin that inhibits the mitochondrial complex I causing mitochondrial impairment, aetiology of Parkinson's. Naringenin is a flavanone predominantly present in citrus fruits. Due to its high antioxidant and anti-inflammatory potential, it has been widely studied against various disorders. In this study, the neuroprotective effect of naringenin was determined against 6-OHDA induced toxicity with Levodopa (l-DOPA) as the standard. Naringenin reduced 6-OHDA induced oxidative stress biomarker levels such as CAT, GSH, SOD, and ROS. Naringenin rescued 6-OHDA induced reduction of the mitochondrial membrane potential. Treatment with naringenin improved the locomotion of the 6-OHDA treated zebrafish larvae which showed stagnant swimming patterns. Naringenin was also found to downregulate the expression of some Parkinsonian genes such as casp9, lrrk2, and polg and upregulate pink1. These studies attribute to naringenin as a viable molecule to study further for its neuroprotective effects against 6-OHDA induced neurotoxicity and neurodegeneration.
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Affiliation(s)
- Swathi Kesh
- Neuroscience Lab, Centre for Molecular and Nanomedical Sciences, Centre for Nanoscience and Nanotechnology, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai - 600119, Tamil Nadu, India
| | - Rajaretinam Rajesh Kannan
- Neuroscience Lab, Centre for Molecular and Nanomedical Sciences, Centre for Nanoscience and Nanotechnology, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai - 600119, Tamil Nadu, India..
| | - Anandan Balakrishnan
- Department of Genetics, University of Madras, Dr ALM PGIBMS Campus, Taramani, Chennai, Tamil Nadu, India
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105
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Lee IJ, Chao CY, Yang YC, Cheng JJ, Huang CL, Chiou CT, Huang HT, Kuo YH, Huang NK. Huang Lian Jie Du Tang attenuates paraquat-induced mitophagy in human SH-SY5Y cells: A traditional decoction with a novel therapeutic potential in treating Parkinson's disease. Biomed Pharmacother 2020; 134:111170. [PMID: 33383311 DOI: 10.1016/j.biopha.2020.111170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 10/22/2022] Open
Abstract
Huang Lian Jie Du Tang (HLJDT) is a traditional Chinese medical decoction for heat-fire clearing and detoxication. Theoretically, the cause of Parkinson's disease (PD) has been attributed to the dysregulations of internal wind, phlegm, fire, and stasis. Thus, HLJDT has been used to treat PD. However, the molecular mechanism is unknown. Besides, paraquat (PQ) as an herbicide has been known to impair midbrain dopaminergic neurons, resemblance to the pathology of PD. Thus, the molecular mechanism of HLJDT in treating PD and PQ-induced in vitro PD model was investigated in this study. Primarily, the dose-response of PQ (0.1∼1 mM)-induced neurotoxicity for 24 h was performed in the human neuroblastoma SH-SY5Y cells. The LD50 of PQ is around 0.3 mM and was applied throughout the following experiments. The neutral red assay was used to estimate cell viability. Co-transfection of the mitochondrial marker and proapoptotic factor genes were applied to measure the release of mitochondrial proapoptotic factors during PQ intoxication and HLJDT protection. The fluorescent dyes were used to detect mitochondrial membrane potential and free radical formation. Western blot and dot-blot analysis and immunocytochemistry were used to estimate the level of proteins related to apoptosis and mitophagy. PINK1 gene silencing was used to determine the significance of mitophagy during PQ intoxication. In this study, HLJDT attenuated PQ-induced apoptosis in SH-SY5Y cells. HLJDT reversed PQ-induced decreased mitochondrial membrane potential and suppressed PQ-induced increased cytosolic and mitochondrial free radical formations and mitochondrial proapoptotic factor releases. Furthermore, HLJDT mitigated PQ-induced increases in full-length PINK1, phosphorylations of Parkin and ubiquitin, mitochondrial translocation of phosphorylated Parkin, and mitophagy. PINK1 gene silencing attenuated PQ-induced neurotoxicity. Therefore, HLJDT attenuated PQ-induced cell death by regulating mitophagy.
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Affiliation(s)
- I-Jung Lee
- Herbal Medicine Department, Yokohama University of Pharmacy, Yokohama, Japan
| | - Che-Yi Chao
- Department of Psychiatry, Cardinal Tien Hospital, New Taipei City 23148, Taiwan, ROC
| | - Ying-Chen Yang
- Department of Biotechnology and Animal Science, National Ilan University, Ilan 26047, Taiwan, ROC
| | - Jing-Jy Cheng
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11267, Taiwan, ROC
| | - Chuen-Lin Huang
- Medical Research Center, Cardinal Tien Hospital, Hsintien, New Taipei City 23148, Taiwan, ROC; Graduate Institute of Physiology & Department of Physiology and Biophysics, National Defense Medical Center, Taipei 11490, Taiwan, ROC
| | - Chun-Tang Chiou
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11267, Taiwan, ROC
| | - Hung-Tse Huang
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11267, Taiwan, ROC
| | - Yao-Haur Kuo
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11267, Taiwan, ROC; Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan, ROC
| | - Nai-Kuei Huang
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11267, Taiwan, ROC; The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan, ROC; Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei 11031, Taiwan, ROC.
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106
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Wen S, Aki T, Unuma K, Uemura K. Chemically Induced Models of Parkinson's Disease: History and Perspectives for the Involvement of Ferroptosis. Front Cell Neurosci 2020; 14:581191. [PMID: 33424553 PMCID: PMC7786020 DOI: 10.3389/fncel.2020.581191] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 11/30/2020] [Indexed: 12/21/2022] Open
Abstract
Ferroptosis is a newly discovered form of necrotic cell death characterized by its dependency on iron and lipid peroxidation. Ferroptosis has attracted much attention recently in the area of neurodegeneration since the involvement of ferroptosis in Parkinson’s disease (PD), a major neurodegenerative disease, has been indicated using animal models. Although PD is associated with both genetic and environmental factors, sporadic forms of PD account for more than 90% of total PD. Following the importance of environmental factors, various neurotoxins are used as chemical inducers of PD both in vivo and in vitro. In contrast to other neurodegenerative diseases such as Alzheimer’s and Huntington’s diseases (AD and HD), many of the characteristics of PD can be reproduced in vivo by the use of specific neurotoxins. Given the indication of ferroptosis in PD pathology, several studies have been conducted to examine whether ferroptosis plays role in the loss of dopaminergic neurons in PD. However, there are still few reports showing an authentic form of ferroptosis in neuronal cells during exposure to the neurotoxins used as PD inducers. In this review article, we summarize the history of the uses of chemicals to create PD models in vivo and in vitro. Besides, we also survey recent reports examining the possible involvement of ferroptosis in chemical models of PD.
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Affiliation(s)
- Shuheng Wen
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Toshihiko Aki
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kana Unuma
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichi Uemura
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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107
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Mottaghi S, Buchholz O, Hofmann UG. Systematic Evaluation of DBS Parameters in the Hemi-Parkinsonian Rat Model. Front Neurosci 2020; 14:561008. [PMID: 33162878 PMCID: PMC7581801 DOI: 10.3389/fnins.2020.561008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/03/2020] [Indexed: 11/24/2022] Open
Abstract
Electrical stimulation of the subthalamic nucleus (STN) is clinically employed to ameliorate several symptoms of manifest Parkinson’s Disease (PD). Stimulation parameters utilized by chronically implanted pulse generators comprise biphasic rectangular short (60–100 μs) pulses with a repetition frequency between 130 and 180 Hz. A better insight into the effect of electrical stimulation parameters could potentially reveal new possibilities for the improvement of deep brain stimulation (DBS) as a treatment. To this end, we employed single-sided 6-hydroxidopamine (6-OHDA) lesioning of the medial forebrain bundle (MFB) in rats to systematically investigate alternative stimulation parameters. These hemi-parkinsonian (hemi-PD) rats underwent individualized, ipsilateral electrical stimulation to the STN of the lesioned hemisphere, while the transiently induced contralateral rotational behavior was quantified to assess the effect of DBS parameter variations. The number of induced rotations during 30 s of stimulation was strongly correlated with the amplitude of the stimulation pulses. Despite a general linear relation between DBS frequency and rotational characteristics, a plateau effect was observed in the rotation count throughout the clinically used frequency range. Alternative waveforms to the conventional biphasic rectangular (Rect) pulse shapes [Triangular (Tri), Sinusoidal (Sine), and Sawtooth (Lin.Dec.)] required higher charges per phase to display similar behavior in rats as compared to the conventional pulse shape. The Euclidean Distance (ED) was used to quantify similarities between different angular trajectories. Overall, our study confirmed that the effect of different amplitude and frequency parameters of STN-DBS in the hemi-PD rat model was similar to those in human PD patients. This shows that induced contralateral rotation is a valuable readout in testing stimulation parameters. Our study supports the call for more pre-clinical studies using this measurement to assess the effect of other DBS parameters such as pulse-width and interphase intervals.
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Affiliation(s)
- Soheil Mottaghi
- Section for Neuroelectronic Systems, Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Technical Faculty, University of Freiburg, Freiburg, Germany
| | - Oliver Buchholz
- Section for Neuroelectronic Systems, Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ulrich G Hofmann
- Section for Neuroelectronic Systems, Department of Neurosurgery, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Technical Faculty, University of Freiburg, Freiburg, Germany
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108
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Antioxidant, anti-inflammatory and neuroprotective effect of kaempferol on rotenone-induced Parkinson’s disease model of rats and SH-S5Y5 cells by preventing loss of tyrosine hydroxylase. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104140] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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109
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Xie C, Prasad AA. Probiotics Treatment Improves Hippocampal Dependent Cognition in a Rodent Model of Parkinson's Disease. Microorganisms 2020; 8:microorganisms8111661. [PMID: 33120961 PMCID: PMC7692862 DOI: 10.3390/microorganisms8111661] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 12/11/2022] Open
Abstract
Parkinson’s disease (PD) is a neurological disorder with motor dysfunction and a number of psychiatric symptoms. Symptoms such as anxiety and cognitive deficits emerge prior to motor symptoms and persist over time. There are limited treatments targeting PD psychiatric symptoms. Emerging studies reveal that the gut microbe is altered in PD patients. Here we assessed the effect of a probiotic treatment in a rat model of PD. We used the neurotoxin (6-hydroxydopamine, 6-OHDA) in a preclinical PD model to examine the impact of a probiotic treatment (Lacticaseibacillus rhamnosus HA-114) on anxiety and memory. Rats underwent either sham surgery or received 6-OHDA bilaterally into the striatum. Three weeks post-surgery, rats were divided into three experimental groups: a sham group that received probiotics, a 6-OHDA group that received probiotics, and the third group of 6-OHDA received the placebo formula. All rats had access to either placebo or probiotics formula for 6 weeks. All groups were assessed for anxiety-like behaviour using the elevated plus maze. Cognition was assessed for both non-hippocampal and hippocampal dependent tasks using the novel object recognition and novel place recognition. We report that the 6-OHDA lesion induced anxiety-like behaviour and deficits in hippocampal dependent cognition. Interestingly, the probiotics treatment had no impact on anxiety-like behaviour but selectively improved hippocampal dependent cognition deficits. Together, the results presented here highlight the utility of animal models in examining the neuropsychiatric symptoms of PD and the potential of probiotics as adjunctive treatment for non-motor symptoms of PD.
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110
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Mor DE, Sohrabi S, Kaletsky R, Keyes W, Tartici A, Kalia V, Miller GW, Murphy CT. Metformin rescues Parkinson's disease phenotypes caused by hyperactive mitochondria. Proc Natl Acad Sci U S A 2020; 117:26438-26447. [PMID: 33024014 PMCID: PMC7585014 DOI: 10.1073/pnas.2009838117] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Metabolic dysfunction occurs in many age-related neurodegenerative diseases, yet its role in disease etiology remains poorly understood. We recently discovered a potential causal link between the branched-chain amino acid transferase BCAT-1 and the neurodegenerative movement disorder Parkinson's disease (PD). RNAi-mediated knockdown of Caenorhabditis elegans bcat-1 is known to recapitulate PD-like features, including progressive motor deficits and neurodegeneration with age, yet the underlying mechanisms have remained unknown. Using transcriptomic, metabolomic, and imaging approaches, we show here that bcat-1 knockdown increases mitochondrial respiration and induces oxidative damage in neurons through mammalian target of rapamycin-independent mechanisms. Increased mitochondrial respiration, or "mitochondrial hyperactivity," is required for bcat-1(RNAi) neurotoxicity. Moreover, we show that post-disease-onset administration of the type 2 diabetes medication metformin reduces mitochondrial respiration to control levels and significantly improves both motor function and neuronal viability. Taken together, our findings suggest that mitochondrial hyperactivity may be an early event in the pathogenesis of PD, and that strategies aimed at reducing mitochondrial respiration may constitute a surprising new avenue for PD treatment.
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Affiliation(s)
- Danielle E Mor
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544
| | - Salman Sohrabi
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544
| | - Rachel Kaletsky
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544
| | - William Keyes
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544
| | - Alp Tartici
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
| | - Vrinda Kalia
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032
| | - Gary W Miller
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032
| | - Coleen T Murphy
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544;
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544
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111
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Pingale T, Gupta GL. Classic and evolving animal models in Parkinson's disease. Pharmacol Biochem Behav 2020; 199:173060. [PMID: 33091373 DOI: 10.1016/j.pbb.2020.173060] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/10/2020] [Accepted: 10/12/2020] [Indexed: 02/07/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disease with motor and non-motor symptoms. PD is characterized by the degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc) and deficiency of dopamine in the striatal region. The primary objective in PD research is to understand the pathogenesis, targets, and development of therapeutic interventions to control the progress of the disease. The anatomical and physiological resemblances between humans and animals gathered the researcher's attention towards the use of animals in PD research. Due to varying age of onset, symptoms, and progression rate, PD becomes heterogeneous which demands the variety of animal models to study diverse features of the disease. Parkinson is a multifactorial disorder, selection of models become important as not a single model shows all the biochemical features of the disease. Currently, conventional pharmacological, neurotoxin-induced, genetically modified and cellular models are available for PD research, but none of them recapitulate all the biochemical characteristics of the disease. In this review, we included the updated knowledge on the main features of currently available in vivo and in vitro models as well as their strengths and weaknesses.
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Affiliation(s)
- Tanvi Pingale
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400 056, India
| | - Girdhari Lal Gupta
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400 056, India; School of Pharmacy & Technology Management, SVKM'S NMIMS, Shirpur, Maharashtra, India.
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112
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Kesh S, Kannan RR, Sivaji K, Balakrishnan A. Hesperidin downregulates kinases lrrk2 and gsk3β in a 6-OHDA induced Parkinson's disease model. Neurosci Lett 2020; 740:135426. [PMID: 33075420 DOI: 10.1016/j.neulet.2020.135426] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/03/2020] [Accepted: 10/04/2020] [Indexed: 12/11/2022]
Abstract
The depletion of dopamine in the striatum region and Lewy bodies are the hallmark characteristics of Parkinson's disease. The pathology also includes the upregulation of various Parkinson's disease (PARK) genes and kinases. Two such kinases, LRRK2 and GSK-3β have been directly implicated in the formation of tau and alpha-synuclein proteins, causing PD. Hesperidin (HES) is a flavanone glycoside that has multiple therapeutic benefits including neuroprotective effects. In this study, we examined the neuroprotective effects of HES against 6-hydroxydopamine (6-OHDA) induced-neurotoxicity in the in-vitro and in-vivo model. Hesperidin significantly protected the SH-SY5Y cells' stress against 6-OHDA induced toxicity by downregulating biomarkers of oxidative stress. Furthermore, HES downregulated the kinases lrrk2 and gsk3β along with casp3, casp9, and polg in the zebrafish model. The treatment with HES also improved the locomotor pattern of zebrafish that was affected by 6-OHDA. This study suggests that hesperidin could be a drug of choice in targeting kinases against a 6-OHDA model of PD.
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Affiliation(s)
- Swathi Kesh
- Neuroscience Lab, Centre for Molecular and Nanomedical Sciences, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India.
| | - Rajaretinam Rajesh Kannan
- Neuroscience Lab, Centre for Molecular and Nanomedical Sciences, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India.
| | - Kalaiarasi Sivaji
- Neuroscience Lab, Centre for Molecular and Nanomedical Sciences, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India.
| | - Anandan Balakrishnan
- Department of Genetics, Dr. ALM PGIBMS Campus, University of Madras, Taramani, Chennai, Tamil Nadu, India.
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113
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Kadnikov IA, Verbovaya ER, Voronkov DN, Voronin MV, Seredenin SB. Deferred Administration of Afobazole Induces Sigma1R-Dependent Restoration of Striatal Dopamine Content in a Mouse Model of Parkinson's Disease. Int J Mol Sci 2020; 21:E7620. [PMID: 33076300 PMCID: PMC7593947 DOI: 10.3390/ijms21207620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/28/2020] [Accepted: 10/13/2020] [Indexed: 12/22/2022] Open
Abstract
Previously, we demonstrated that the immediate administration of multitarget anxiolytic afobazole slows down the progression of neuronal damage in a 6-hydroxidodamine (6-OHDA) model of Parkinson's disease due to the activation of chaperone Sigma1R. The aim of the present study is to evaluate the therapeutic potential of deferred afobazole administration in this model. Male ICR mice received a unilateral 6-OHDA lesion of the striatum. Fourteen days after the surgery, mice were treated with afobazole, selective Sigma1R agonist PRE-084, selective Sigma1R antagonist BD-1047, and a combination of BD-1047 with afobazole or PRE-084 for another 14 days. The deferred administration of afobazole restored the intrastriatal dopamine content in the 6-OHDA-lesioned striatum and facilitated motor behavior in rotarod tests. The action of afobazole accorded with the effect of Sigma1R selective agonist PRE-084 and was blocked by Sigma1R selective antagonist BD-1047. The present study illustrates the Sigma1R-dependent effects of afobazole in a 6-OHDA model of Parkinson's disease and reveals the therapeutic potential of Sigma1R agonists in treatment of the condition.
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Affiliation(s)
- Ilya A. Kadnikov
- Department of Pharmacogenetics, FSBI “Zakusov Institute of Pharmacology”, Baltiyskaya street 8, 125315 Moscow, Russia; (E.R.V.); (M.V.V.)
| | - Ekaterina R. Verbovaya
- Department of Pharmacogenetics, FSBI “Zakusov Institute of Pharmacology”, Baltiyskaya street 8, 125315 Moscow, Russia; (E.R.V.); (M.V.V.)
| | - Dmitry N. Voronkov
- Laboratory of neuromorphology, Research Center of Neurology, Volokolamskoe Highway 80, 125367 Moscow, Russia;
| | - Mikhail V. Voronin
- Department of Pharmacogenetics, FSBI “Zakusov Institute of Pharmacology”, Baltiyskaya street 8, 125315 Moscow, Russia; (E.R.V.); (M.V.V.)
| | - Sergei B. Seredenin
- Department of Pharmacogenetics, FSBI “Zakusov Institute of Pharmacology”, Baltiyskaya street 8, 125315 Moscow, Russia; (E.R.V.); (M.V.V.)
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114
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Kim OH, Park JH, Son JI, Kim KY, Lee HJ. Both Intracranial and Intravenous Administration of Functionalized Carbon Nanotubes Protect Dopaminergic Neuronal Death from 6-Hydroxydopamine. Int J Nanomedicine 2020; 15:7615-7626. [PMID: 33116491 PMCID: PMC7550215 DOI: 10.2147/ijn.s276380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/10/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose Although single-walled nanotubes (SWNTs) with functional groups have been suggested as a potential nanomedicine to treat neuronal disorders, effective routes to administer SWNTs have not been compared thus far. The blood–brain barrier is a considerable challenge for the development of brain-targeting drugs, and therefore functionalized SWNT routes of administration have been needed for testing Parkinson’s disease (PD) treatment. Here, effective administration routes of functionalized SWNTs were evaluated in PD mouse model. Methods Three different administration routes were tested in PD mouse model. Functionalized SWNTs were injected directly into the lateral ventricle three days before (Method 1) or after (Method 2) 6-hydroxydopamine (6-OHDA) injection to compare the protective effects of SWNTs against dopaminergic neuronal death or functionalized SWNTs were injected intravenously at three and four days after 6-OHDA injection (Method 3). Asymmetric behaviors and histological assessment from all animals were performed at two weeks after 6-OHDA injection. Results Ventricular injections of SWNTs both before or after 6-OHDA exposure protected dopaminergic neurons both in the substantia nigra and striatum and alleviated rotational asymmetry behavior in PD mice. Moreover, intravenous administration of SWNTs three and four days after 6-OHDA injection also prevented neuronal death and PD mice behavioral impairment without apparent cytotoxicity after six months post-treatment. Conclusion Our study demonstrates that functionalized SWNTs could effectively protect dopaminergic neurons through all administration routes examined herein. Therefore, SWNTs are promising nanomedicine agents by themselves or as therapeutic carriers to treat neuronal disorders such as PD.
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Affiliation(s)
- Ok-Hyeon Kim
- Department of Anatomy and Cell Biology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Jun Hyung Park
- Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, Republic of Korea
| | - Jong In Son
- Department of Anatomy and Cell Biology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Kyung-Yong Kim
- Department of Anatomy and Cell Biology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Hyun Jung Lee
- Department of Anatomy and Cell Biology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea.,Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, Republic of Korea
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115
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Wang XW, Yuan LJ, Yang Y, Zhang M, Chen WF. IGF-1 inhibits MPTP/MPP +-induced autophagy on dopaminergic neurons through the IGF-1R/PI3K-Akt-mTOR pathway and GPER. Am J Physiol Endocrinol Metab 2020; 319:E734-E743. [PMID: 32865008 DOI: 10.1152/ajpendo.00071.2020] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Autophagy dysfunctions are involved in the pathogenesis of Parkinson's disease (PD). In the present study, we aimed to evaluate the involvement of G protein-coupled estrogen receptor (GPER) in the inhibitory effect of insulin-like growth factor-1 (IGF-1) against excessive autophagy in PD animal and cellular models. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) treatment significantly induced mouse movement disorder and decreased the protein level of tyrosine hydroxylase (TH) in the substantia nigra (SN) and dopamine (DA) content in striatum. Along with the dopamine neuron injury, we observed significant upregulations of microtubule-associated light chain-3 II (LC3-II) and α-synuclein as well as a downregulation of P62 in MPTP-treated mice. These changes could be restored by IGF-1 pretreatment. Cotreatment with IGF-1R antagonist JB-1 or GPER antagonist G15 could block the neuroprotective effects of IGF-1. 1-Methy-4-phenylpyridinium (MPP+) treatment could also excessively activate autophagy along with the reduction of cell viability in SH-SY5Y cells. IGF-1 could inhibit the neurotoxicity through promoting the phosphorylation of Akt and mammalian target of rapamycin (mTOR), which could also be antagonized by JB-1 or G15. These data suggest that IGF-1 inhibits MPTP/MPP+-induced autophagy on dopaminergic neurons through the IGF-1R/PI3K-Akt-mTOR pathway and GPER.
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Affiliation(s)
- Xiao-Wen Wang
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Liang-Jie Yuan
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
- School of Basic Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Ye Yang
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Mei Zhang
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Wen-Fang Chen
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
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116
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Abuthawabeh R, Abuirmeileh AN, Alzoubi KH. The beneficial effect of vanillin on 6-hydroxydopamine rat model of Parkinson's disease. Restor Neurol Neurosci 2020; 38:369-373. [PMID: 32986633 DOI: 10.3233/rnn-201028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Parkinson's disease (PD) is a progressive neurodegenerative disorder that is related to neuroinflammation. Vanillin, which possesses both antioxidant, and anti-inflammatory properties, can be a candidate for neuroprotection in PD. OBJECTIVE This study was aimed to investigate the effects of vanillin on the 6-hydroxydopamine (6-OHDA) rodent model of PD. METHODS Male Wistar rats were administrated intraperitoneal (i.p) or oral vanillin at a dose of 20 mg/kg/day for 7 days that was started at three days before or seven days after intracerebral injection of 6-OHDA. The 6-OHDA-induced lesions were assessed behaviorally using the apomorphine rotation test, neurochemically via measuring striatal dopamine concentrations, and through immunohistochemistry. RESULTS Both oral and IP vanillin at three days before or seven days after 6-OHDA lesioning exhbited significantly lower tight contralateral rotations upon apomorphine challenge, and higher striatal dopamine concentrations. CONCLUSIONS Vanillin seems to offer protective properties against 6-OHDA lesion via preserving striatal dopamine levels.
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Affiliation(s)
- Rasha Abuthawabeh
- Department of Applied Pharmaceutical Sciences, Faculty of Pharmacy, Israa University, Amman, Jordan
| | - Amjad N Abuirmeileh
- Department of Applied Pharmaceutical Sciences, Faculty of Pharmacy, Israa University, Amman, Jordan
| | - Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
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117
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Aryal S, Skinner T, Bridges B, Weber JT. The Pathology of Parkinson's Disease and Potential Benefit of Dietary Polyphenols. Molecules 2020; 25:E4382. [PMID: 32987656 PMCID: PMC7582699 DOI: 10.3390/molecules25194382] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/17/2022] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that is characterized by a loss of dopaminergic neurons, leading to bradykinesia, rigidity, tremor at rest, and postural instability, as well as non-motor symptoms such as olfactory impairment, pain, autonomic dysfunction, impaired sleep, fatigue, and behavioral changes. The pathogenesis of PD is believed to involve oxidative stress, disruption to mitochondria, alterations to the protein α-synuclein, and neuroinflammatory processes. There is currently no cure for the disease. Polyphenols are secondary metabolites of plants, which have shown benefit in several experimental models of PD. Intake of polyphenols through diet is also associated with lower PD risk in humans. In this review, we provide an overview of the pathology of PD and the data supporting the potential neuroprotective capacity of increased polyphenols in the diet. Evidence suggests that the intake of dietary polyphenols may inhibit neurodegeneration and the progression of PD. Polyphenols appear to have a positive effect on the gut microbiome, which may decrease inflammation that contributes to the disease. Therefore, a diet rich in polyphenols may decrease the symptoms and increase quality of life in PD patients.
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Affiliation(s)
| | | | | | - John T. Weber
- School of Pharmacy, Memorial University, St. John’s, NL A1B 3V6, Canada; (S.A.); (T.S.); (B.B.)
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118
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Song B, Cha Y, Ko S, Jeon J, Lee N, Seo H, Park KJ, Lee IH, Lopes C, Feitosa M, Luna MJ, Jung JH, Kim J, Hwang D, Cohen BM, Teicher MH, Leblanc P, Carter BS, Kordower JH, Bolshakov VY, Kong SW, Schweitzer JS, Kim KS. Human autologous iPSC-derived dopaminergic progenitors restore motor function in Parkinson's disease models. J Clin Invest 2020; 130:904-920. [PMID: 31714896 DOI: 10.1172/jci130767] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/30/2019] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder associated with loss of striatal dopamine, secondary to degeneration of midbrain dopamine (mDA) neurons in the substantia nigra, rendering cell transplantation a promising therapeutic strategy. To establish human induced pluripotent stem cell-based (hiPSC-based) autologous cell therapy, we report a platform of core techniques for the production of mDA progenitors as a safe and effective therapeutic product. First, by combining metabolism-regulating microRNAs with reprogramming factors, we developed a method to more efficiently generate clinical-grade iPSCs, as evidenced by genomic integrity and unbiased pluripotent potential. Second, we established a "spotting"-based in vitro differentiation methodology to generate functional and healthy mDA cells in a scalable manner. Third, we developed a chemical method that safely eliminates undifferentiated cells from the final product. Dopaminergic cells thus express high levels of characteristic mDA markers, produce and secrete dopamine, and exhibit electrophysiological features typical of mDA cells. Transplantation of these cells into rodent models of PD robustly restores motor function and reinnervates host brain, while showing no evidence of tumor formation or redistribution of the implanted cells. We propose that this platform is suitable for the successful implementation of human personalized autologous cell therapy for PD.
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Affiliation(s)
- Bin Song
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Young Cha
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Sanghyeok Ko
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Jeha Jeon
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Nayeon Lee
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Hyemyung Seo
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA.,Department of Molecular and Life Sciences, Hanyang University, Ansan, Korea
| | | | - In-Hee Lee
- Department of Pediatrics.,Computational Health Informatics Program, Boston Children's Hospital, and
| | - Claudia Lopes
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Melissa Feitosa
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - María José Luna
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Jin Hyuk Jung
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Jisun Kim
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA.,Department of Molecular and Life Sciences, Hanyang University, Ansan, Korea
| | - Dabin Hwang
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | | | | | - Pierre Leblanc
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
| | - Bob S Carter
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jeffrey H Kordower
- Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Sek Won Kong
- Department of Pediatrics.,Computational Health Informatics Program, Boston Children's Hospital, and
| | - Jeffrey S Schweitzer
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kwang-Soo Kim
- Department of Psychiatry and.,Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
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119
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Zampese E, Surmeier DJ. Calcium, Bioenergetics, and Parkinson's Disease. Cells 2020; 9:cells9092045. [PMID: 32911641 PMCID: PMC7564460 DOI: 10.3390/cells9092045] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/04/2020] [Accepted: 09/07/2020] [Indexed: 12/12/2022] Open
Abstract
Degeneration of substantia nigra (SN) dopaminergic (DAergic) neurons is responsible for the core motor deficits of Parkinson’s disease (PD). These neurons are autonomous pacemakers that have large cytosolic Ca2+ oscillations that have been linked to basal mitochondrial oxidant stress and turnover. This review explores the origin of Ca2+ oscillations and their role in the control of mitochondrial respiration, bioenergetics, and mitochondrial oxidant stress.
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120
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Chai XY, Diwakarla S, Pustovit RV, McQuade RM, Di Natale M, Ermine CM, Parish CL, Finkelstein DI, Furness JB. Investigation of nerve pathways mediating colorectal dysfunction in Parkinson's disease model produced by lesion of nigrostriatal dopaminergic neurons. Neurogastroenterol Motil 2020; 32:e13893. [PMID: 32512642 DOI: 10.1111/nmo.13893] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Gastrointestinal (GI) dysfunction, including constipation, is a common non-motor symptom of Parkinson's disease (PD). The toxin 6-hydroxydopamine (6OHDA) produces the symptoms of PD, surprisingly including constipation, after it is injected into the medial forebrain bundle (MFB). However, the mechanisms involved in PD-associated constipation caused by central application of 6OHDA remain unknown. We investigated effects of 6OHDA lesioning of the MFB on motor performance and GI function. METHODS Male Sprague Dawley rats were unilaterally injected with 6OHDA in the MFB. Colorectal propulsion was assessed by bead expulsion after 4 weeks and by recording colorectal contractions and propulsion after 5 weeks. Enteric nervous system (ENS) neuropathy was examined by immunohistochemistry. KEY RESULTS When compared to shams, 6OHDA-lesioned rats had significantly increased times of bead expulsion from the colorectum, indicative of colon dysmotility. Administration of the colokinetic, capromorelin, that stimulates defecation centers in the spinal cord, increased the number of contractions and colorectal propulsion in both groups compared to baseline; however, the effectiveness of capromorelin in 6OHDA-lesioned rats was significantly reduced in comparison with shams, indicating that 6OHDA animals have reduced responsiveness of the spinal defecation centers. Enteric neuropathy was observed in the distal colon, revealing that lesion of the MFB has downstream effects at the cellular level, remote from the site of 6OHDA administration. CONCLUSIONS & INFERENCES We conclude that there are trans-synaptic effects of the proximal, forebrain, lesion of pathways from the brain that send signals down the spinal cord, at the levels of the defecation centers and the ENS.
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Affiliation(s)
- Xin-Yi Chai
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Shanti Diwakarla
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Ruslan V Pustovit
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Rachel M McQuade
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Madeleine Di Natale
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
| | - Charlotte M Ermine
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - Clare L Parish
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - David I Finkelstein
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia
| | - John B Furness
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, Vic, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Vic, Australia
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121
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Wasel O, Freeman JL. Chemical and Genetic Zebrafish Models to Define Mechanisms of and Treatments for Dopaminergic Neurodegeneration. Int J Mol Sci 2020; 21:ijms21175981. [PMID: 32825242 PMCID: PMC7503535 DOI: 10.3390/ijms21175981] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/14/2020] [Accepted: 08/16/2020] [Indexed: 01/08/2023] Open
Abstract
The zebrafish (Danio rerio) is routinely used in biological studies as a vertebrate model system that provides unique strengths allowing applications in studies of neurodevelopmental and neurodegenerative diseases. One specific advantage is that the neurotransmitter systems are highly conserved throughout vertebrate evolution, including between zebrafish and humans. Disruption of the dopaminergic signaling pathway is linked to multiple neurological disorders. One of the most common is Parkinson’s disease, a neurodegenerative disease associated with the loss of dopaminergic neurons, among other neuropathological characteristics. In this review, the development of the zebrafish’s dopaminergic system, focusing on genetic control of the dopaminergic system, is detailed. Second, neurotoxicant models used to study dopaminergic neuronal loss, including 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), the pesticides paraquat and rotenone, and 6-hydroxydopamine (6-OHDA), are described. Next, zebrafish genetic knockdown models of dj1, pink1, and prkn established for investigating mechanisms of Parkinson’s disease are discussed. Chemical modulators of the dopaminergic system are also highlighted to showcase the applicability of the zebrafish to identify mechanisms and treatments for neurodegenerative diseases such as Parkinson’s disease associated with the dopaminergic system.
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122
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Mor DE, Murphy CT. Mitochondrial hyperactivity as a potential therapeutic target in Parkinson's disease. TRANSLATIONAL MEDICINE OF AGING 2020; 4:117-120. [PMID: 33178902 PMCID: PMC7653964 DOI: 10.1016/j.tma.2020.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Mitochondrial dysfunction is thought to contribute to neurodegeneration in Parkinson's disease (PD), yet the cellular events that lead to mitochondrial disruption remain unclear. Post-mortem studies of PD patient brains and the use of complex I inhibitors to model the disease previously suggested a reduction in mitochondrial activity as a causative factor in PD, but this may represent an endpoint in the disease process. In our recent studies, we identified a novel link between branched-chain amino acid metabolism and PD, and uncovered mitochondrial hyperactivity as a potential alternative mechanism of PD pathogenesis. Increased mitochondrial activity may occur in a subset of PD patients, or may be a more common early event that precedes the ultimate loss of mitochondrial function. Therefore, it may be that any imbalance in mitochondrial activity, either increased or decreased, could cause a loss of mitochondrial homeostasis that leads to disease. An effective therapeutic strategy may be to target specific imbalances in activity at selective stages of PD or in specific patients, with any efforts to reduce mitochondrial activity constituting a surprising new avenue for PD treatment.
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Affiliation(s)
- Danielle E. Mor
- Department of Molecular Biology & LSI Genomics, Princeton University, Princeton, NJ, 08544, USA
| | - Coleen T. Murphy
- Department of Molecular Biology & LSI Genomics, Princeton University, Princeton, NJ, 08544, USA
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123
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Abstract
Parkinson’s disease (PD) is a complex, multi-system, neurodegenerative disorder; PD patients exhibit motor symptoms (such as akinesia/bradykinesia, tremor, rigidity, and postural instability) due to a loss of nigrostriatal dopaminergic neurons, and non-motor symptoms such as hyposmia, autonomic disturbance, depression, and REM sleep behavior disorder (RBD), which precedes motor symptoms. Pathologically, α-synuclein deposition is observed in the central and peripheral nervous system of sporadic PD patients. To clarify the mechanism of neurodegeneration in PD and to develop treatment to slow or stop PD progression, there is a great need for experimental models which reproduce neurological features of PD. Animal models exposed to rotenone, a commonly used pesticide, have received most attention since Greenamyre and his colleagues reported that chronic exposure to rotenone could reproduce the anatomical, neurochemical, behavioral, and neuropathological features of PD. In addition, recent studies demonstrated that rotenone induced neuropathological change not only in the central nervous system but also in the peripheral nervous system in animals. In this article, we review rotenone models especially focused on reproducibility of central and peripheral multiple features of PD. This review also highlights utility of rotenone models for investigation of PD pathogenesis and development of disease-modifying drugs for PD in future.
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124
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Ebrahimi V, Eskandarian Boroujeni M, Aliaghaei A, Abdollahifar MA, Piryaei A, Haghir H, Sadeghi Y. Functional dopaminergic neurons derived from human chorionic mesenchymal stem cells ameliorate striatal atrophy and improve behavioral deficits in Parkinsonian rat model. Anat Rec (Hoboken) 2020; 303:2274-2289. [PMID: 31642188 DOI: 10.1002/ar.24301] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 08/17/2019] [Accepted: 09/22/2019] [Indexed: 12/15/2022]
Abstract
Human chorionic mesenchymal stem cells (HCMSCs) have been recognized as a desirable choice for cell therapy in neurological disorders such as Parkinson's disease (PD). Due to invaluable features of HCMSCs including their immunomodulatory and immunosuppressive properties, easily accessible and less differentiated compared to other types of MSCs, HCMSCs provide a great hope for regenerative medicine. Thus, the purpose of this study was to determine the in vitro and in vivo efficacy of HCMSCs-derived dopaminergic (DA) neuron-like cells with regard to PD. Initially, HCMSCs were isolated and underwent a 2-week DA differentiation, followed by in vitro assessments, using quantitative real-time polymerase chain reaction, immunocytochemistry, patch clamp recording, and high-performance liquid chromatography. In addition, the effects of implanted HCMSCs-derived DA neuron-like cells on the motor coordination along with stereological alterations in the striatum of rat models of PD were investigated. Our results showed that under neuronal induction, HCMSCs revealed neuron-like morphology, and expressed neuronal and DA-specific genes, together with DA release. Furthermore, transplantation of HCMSCs-derived DA neurons into the striatum of rat models of PD, augmented performance. Besides, it prevented reduction of striatal volume, dendritic length, and the total number of neurons, coupled with a diminished level of cleaved caspase-3. Altogether, these findings suggest that HCMSCs could be considered as an attractive strategy for cell-based therapies in PD.
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Affiliation(s)
- Vahid Ebrahimi
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Eskandarian Boroujeni
- Department of Stem Cells and Regenerative Medicine, Faculty of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Abbas Aliaghaei
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Piryaei
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Haghir
- Department of Anatomy, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetic Research Center (MGRC), Mashhad University of Medical Sciences, Mashhad, Iran
| | - Yousef Sadeghi
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Godoy R, Hua K, Kalyn M, Cusson VM, Anisman H, Ekker M. Dopaminergic neurons regenerate following chemogenetic ablation in the olfactory bulb of adult Zebrafish (Danio rerio). Sci Rep 2020; 10:12825. [PMID: 32733000 PMCID: PMC7393114 DOI: 10.1038/s41598-020-69734-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/13/2020] [Indexed: 12/20/2022] Open
Abstract
Adult zebrafish have the ability to regenerate cells of the central nervous system. However, few neuronal regeneration studies in adult zebrafish addressed their ability to regenerate specific types of neurons following cell specific ablation. We show here that treatment of transgenic Tg(dat:CFP-NTR) adult zebrafish with the prodrug metronidazole (Mtz) according to our administration regimen predominantly ablates dopamine (DA) neurons within the olfactory bulb (OB) of adult fish. Loss of DA neurons was accompanied by an impaired olfaction phenotype, as early as 1-week post-treatment, in which fish were unable to sense the presence of the repulsive stimulus cadaverine. The olfactory impairment was reversed within 45 days and coincided with the recovery of DA neuron counts in the OB. A multi-label pulse-chase analysis with BrdU and EdU over the first seventeen days-post Mtz exposure showed that newly formed DA neurons were recruited within the first nine days following exposure and led to functional and morphological recovery of the OB.
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Affiliation(s)
- Rafael Godoy
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Khang Hua
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Michael Kalyn
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | | | - Hymie Anisman
- Department of Neuroscience, Carleton University, Ottawa, ON, Canada
| | - Marc Ekker
- Department of Biology, University of Ottawa, Ottawa, ON, Canada.
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Wang R, Sun H, Ren H, Wang G. α-Synuclein aggregation and transmission in Parkinson's disease: a link to mitochondria and lysosome. SCIENCE CHINA-LIFE SCIENCES 2020; 63:1850-1859. [PMID: 32681494 DOI: 10.1007/s11427-020-1756-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/11/2020] [Indexed: 12/14/2022]
Abstract
The presence of intraneuronal Lewy bodies (LBs) and Lewy neurites (LNs) in the substantia nigra (SN) composed of aggregated α-synuclein (α-syn) has been recognized as a hallmark of pathological changes in Parkinson's disease (PD). Numerous studies have shown that aggregated α-syn is necessary for neurotoxicity. Meanwhile, the mitochondrial and lysosomal dysfunctions are associated with α-syn pathogenicity The hypothesis that α-syn transmission in the human brain contributes to the instigation and progression of PD has provided insights into PD pathology. This review will provide a brief overview of increasing researches that shed light on the relationship of α-syn aggregation with mitochondrial and lysosomal dysfunctions, and highlight recent understanding of α-syn transmission in PD pathology.
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Affiliation(s)
- Rui Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Hongyang Sun
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Haigang Ren
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
| | - Guanghui Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases & Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
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127
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Pajares M, I. Rojo A, Manda G, Boscá L, Cuadrado A. Inflammation in Parkinson's Disease: Mechanisms and Therapeutic Implications. Cells 2020; 9:cells9071687. [PMID: 32674367 PMCID: PMC7408280 DOI: 10.3390/cells9071687] [Citation(s) in RCA: 356] [Impact Index Per Article: 89.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023] Open
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder primarily characterized by the death of dopaminergic neurons that project from the substantia nigra pars compacta. Although the molecular bases for PD development are still little defined, extensive evidence from human samples and animal models support the involvement of inflammation in onset or progression. However, the exact trigger for this response remains unclear. Here, we provide a systematic review of the cellular mediators, i.e., microglia, astroglia and endothelial cells. We also discuss the genetic and transcriptional control of inflammation in PD and the immunomodulatory role of dopamine and reactive oxygen species. Finally, we summarize the preclinical and clinical approaches targeting neuroinflammation in PD.
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Affiliation(s)
- Marta Pajares
- Instituto de Investigaciones Biomédicas “Alberto Sols” UAM-CSIC, 28029 Madrid, Spain; (M.P.); (A.I.R.); (L.B.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), ISCIII, 28031 Madrid, Spain
| | - Ana I. Rojo
- Instituto de Investigaciones Biomédicas “Alberto Sols” UAM-CSIC, 28029 Madrid, Spain; (M.P.); (A.I.R.); (L.B.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), ISCIII, 28031 Madrid, Spain
- Instituto de Investigación Sanitaria La Paz (IdiPaz), 28029 Madrid, Spain
- Department of Biochemistry, Faculty of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
| | - Gina Manda
- Department Cellular and Molecular Medicine, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania;
| | - Lisardo Boscá
- Instituto de Investigaciones Biomédicas “Alberto Sols” UAM-CSIC, 28029 Madrid, Spain; (M.P.); (A.I.R.); (L.B.)
- Instituto de Investigación Sanitaria La Paz (IdiPaz), 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Cardiovasculares (CIBERcv), ISCIII, 28029 Madrid, Spain
| | - Antonio Cuadrado
- Instituto de Investigaciones Biomédicas “Alberto Sols” UAM-CSIC, 28029 Madrid, Spain; (M.P.); (A.I.R.); (L.B.)
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), ISCIII, 28031 Madrid, Spain
- Instituto de Investigación Sanitaria La Paz (IdiPaz), 28029 Madrid, Spain
- Department of Biochemistry, Faculty of Medicine, Autonomous University of Madrid, 28029 Madrid, Spain
- Department Cellular and Molecular Medicine, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania;
- Correspondence: ; Tel.: +34-915854383; Fax: +34-915854401
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Fernandes-Junior SA, Oliveira LM, Czeisler CM, Mo X, Roy S, Somogyi A, Zhang L, Moreira TS, Otero JJ, Takakura AC. Stimulation of retrotrapezoid nucleus Phox2b-expressing neurons rescues breathing dysfunction in an experimental Parkinson's disease rat model. Brain Pathol 2020; 30:926-944. [PMID: 32497400 DOI: 10.1111/bpa.12868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/17/2020] [Accepted: 05/11/2020] [Indexed: 01/10/2023] Open
Abstract
Emerging evidence from multiple studies indicates that Parkinson's disease (PD) patients suffer from a spectrum of autonomic and respiratory motor deficiencies in addition to the classical motor symptoms attributed to substantia nigra degeneration of dopaminergic neurons. Animal models of PD show a decrease in the resting respiratory rate as well as a decrease in the number of Phox2b-expressing retrotrapezoid nucleus (RTN) neurons. The aim of this study was to determine the extent to which substantia nigra pars compact (SNc) degeneration induced RTN biomolecular changes and to identify the extent to which RTN pharmacological or optogenetic stimulations rescue respiratory function following PD-induction. SNc degeneration was achieved in adult male Wistar rats by bilateral striatal 6-hydroxydopamine injection. For proteomic analysis, laser capture microdissection and pressure catapulting were used to isolate the RTN for subsequent comparative proteomic analysis and Ingenuity Pathway Analysis (IPA). The respiratory parameters were evaluated by whole-body plethysmography and electromyographic analysis of respiratory muscles. The results confirmed reduction in the number of dopaminergic neurons of SNc and respiratory rate in the PD-animals. Our proteomic data suggested extensive RTN remodeling, and that pharmacological or optogenetic stimulations of the diseased RTN neurons promoted rescued the respiratory deficiency. Our data indicate that despite neuroanatomical and biomolecular RTN pathologies, that RTN-directed interventions can rescue respiratory control dysfunction.
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Affiliation(s)
- Silvio A Fernandes-Junior
- Department of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo (USP), São Paulo, Brazil.,Department of Pathology, School of Medicine, The Ohio State University (OSU), Columbus, OH
| | - Luiz M Oliveira
- Department of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo (USP), São Paulo, Brazil
| | - Catherine M Czeisler
- Department of Pathology, School of Medicine, The Ohio State University (OSU), Columbus, OH
| | - Xiaokui Mo
- Department of Biostatistics and Bioinformatics, The Ohio State University (OSU), Columbus, OH
| | - Sashwati Roy
- Departments of Surgery and Molecular and Cellular Biochemistry, The Ohio State University (OSU), Columbus, OH
| | - Arpad Somogyi
- Mass Spectrometry and Proteomics Facility, The Ohio State University (OSU), Columbus, OH
| | - Liewn Zhang
- Mass Spectrometry and Proteomics Facility, The Ohio State University (OSU), Columbus, OH
| | - Thiago S Moreira
- Department of Physiology and Biophysics, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo (USP), São Paulo, Brazil
| | - José J Otero
- Department of Pathology, School of Medicine, The Ohio State University (OSU), Columbus, OH
| | - Ana C Takakura
- Department of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo (USP), São Paulo, Brazil
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Xu Q, Chen Z, Zhu B, Wang G, Jia Q, Li Y, Wu X. A-Type Cinnamon Procyanidin Oligomers Protect Against 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine-Induced Neurotoxicity in Mice Through Inhibiting the P38 Mitogen-Activated Protein Kinase/P53/BCL-2 Associated X Protein Signaling Pathway. J Nutr 2020; 150:1731-1737. [PMID: 32386222 DOI: 10.1093/jn/nxaa128] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 03/27/2020] [Accepted: 04/13/2020] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is a common neurodegenerative disorder. Cinnamon procyanidin oligomers (CPOs) are flavonoids with many claimed health benefits. OBJECTIVE This study aimed to elucidate the neuroprotection of A-type CPOs (CPO-A) and the underlying mechanisms in cultured cell and animal models of PD. METHODS Thirty male mice (C57BL/6, 9-wk old) were assigned to 3 groups (n = 10), and were given daily gavage of saline [control and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) groups] or CPO-A (150 mg/kg, CPO-A group) during days 1-15 and daily intraperitoneal injections of saline (control group) or MPTP (20 mg/kg; MPTP and MPTP + CPO-A groups) during days 11-15. After the motor behavior test, all mice were killed on day 16 to collect the substantia nigra (SN) for assaying the neuroprotective effects of CPO-A. SH-SY5Y cells were treated with 12.5 μM CPO-A for 2 h or 3 activators of stress-related kinases (5-25 μM) for 12-48 h followed by 1 mM 1-methyl-4-phenylpyridinium (MPP+) for assays of viability, morphology, and stress status. RESULTS Compared with the control, the MPTP treatment decreased (P < 0.05) locomotor activity by 21%, and tyrosine hydroxylase (TH) positive neurons by 55% and Th mRNA concentration by 51% in the SN. The CPO-A treatment attenuated or restored (P < 0.05) these changes and inhibited (P < 0.05) the MPTP-induced activation of P38 mitogen-activated protein kinase (P38MAPK) and P53, along with the downstream expression of BCL-2 associated X protein (BAX) in the SN. In SH-SY5Y cells, the CPO-A treatment blocked (P < 0.01) the MPP+-induced accumulation of intracellular reactive oxygen species and neurotoxicity. However, this protection was abolished (P < 0.05) by activators of the P38MAPK/P53/BAX pathway. CONCLUSION CPO-A protected against MPP+-induced cytotoxicity in SH-SY5Y cells and MPTP-induced neurotoxicity in mice by regulating the P38MAPK/P53/BAX signaling. Our findings reveal a novel role and mechanism of a food flavonoid CPO-A in preventing neurodegeneration.
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Affiliation(s)
- Qi Xu
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,School of Public Health, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ziyu Chen
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Borong Zhu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Gaorui Wang
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qi Jia
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yiming Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaojun Wu
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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130
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Harsanyiova J, Buday T, Kralova Trancikova A. Parkinson's Disease and the Gut: Future Perspectives for Early Diagnosis. Front Neurosci 2020; 14:626. [PMID: 32625058 PMCID: PMC7313629 DOI: 10.3389/fnins.2020.00626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/19/2020] [Indexed: 12/11/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by progressive degeneration of dopaminergic neurons, and at the cellular level by the formation of Lewy bodies in the central nervous system (CNS). However, the onset of the disease is believed to be localized to peripheral organs, particularly the gastrointestinal tract (GIT) and the olfactory bulb sooner before neuropathological changes occur in the CNS. Patients already in the pre-motor stage of PD suffer from various digestive problems and/or due to significant changes in the composition of the intestinal microbiome in this early stage of the disease. Detailed analyses of patient biopsies and autopsies as well as animal models of neuropathological changes characteristic of PD provided important information on the pathology or treatment of PD symptoms. However, presently is not clarified (i) the specific tissue in the GIT where the pathological processes associated with PD is initiated; (ii) the mechanism by which these processes are disseminated to the CNS or other tissues within the GIT; and (iii) which neuropathological changes could also serve as a reliable diagnostic marker of the premotor stages of PD, or (iv) which type of GIT tissue would be the most appropriate choice for routine examination of patient biopsies.
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Affiliation(s)
- Jana Harsanyiova
- Departmet of Pahophysiology, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
| | - Tomas Buday
- Departmet of Pahophysiology, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
| | - Alzbeta Kralova Trancikova
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
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131
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Biophysical studies of protein misfolding and aggregation in in vivo models of Alzheimer's and Parkinson's diseases. Q Rev Biophys 2020; 49:e22. [PMID: 32493529 DOI: 10.1017/s0033583520000025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neurodegenerative disorders, including Alzheimer's (AD) and Parkinson's diseases (PD), are characterised by the formation of aberrant assemblies of misfolded proteins. The discovery of disease-modifying drugs for these disorders is challenging, in part because we still have a limited understanding of their molecular origins. In this review, we discuss how biophysical approaches can help explain the formation of the aberrant conformational states of proteins whose neurotoxic effects underlie these diseases. We discuss in particular models based on the transgenic expression of amyloid-β (Aβ) and tau in AD, and α-synuclein in PD. Because biophysical methods have enabled an accurate quantification and a detailed understanding of the molecular mechanisms underlying protein misfolding and aggregation in vitro, we expect that the further development of these methods to probe directly the corresponding mechanisms in vivo will open effective routes for diagnostic and therapeutic interventions.
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132
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Self-assembled polydopamine nanoparticles improve treatment in Parkinson's disease model mice and suppress dopamine-induced dyskinesia. Acta Biomater 2020; 109:220-228. [PMID: 32268242 DOI: 10.1016/j.actbio.2020.03.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 11/21/2022]
Abstract
Although Levodopa (l-DOPA), a dopamine precursor, exhibits a high risk of dyskinesia, it remains the primary treatment in Parkinson's disease (PD), a progressive neurodegenerative disorder. In this study, we designed poly(l-DOPA)-based self-assembled nanodrug (NanoDOPA) from amphiphilic block copolymer possessing poly(l-DOPA(OAc)2), which is a precursor of l-DOPA as a hydrophobic segment, for treatment in a PD model mouse. Under physiological enzyme treatment, the poly(l-DOPA(OAc)2) in the block copolymer was hydrolyzed to liberate l-DOPA gradually. Using the MPTP-induced PD mouse model, we observed that mice treated with NanoDOPA demonstrated a significant improvement of PD symptoms compared to the l-DOPA treatment. Interestingly, the NanoDOPA treatment did not cause the dyskinesia symptoms, which was clearly observed in the l-DOPA-treated mice. Furthermore, NanoDOPA exhibited remarkably lower toxicity in vitro compared to l-DOPA, in addition with no noticeable NanoDOPA toxicity observed in the treated mice. These results suggested that self-assembled NanoDOPA is a promising therapeutic in the treatment of PD. STATEMENT OF SIGNIFICANCE: In this study, we proposed a therapeutic approach for the effective treatment of Parkinson's disease (PD) using newly designed poly(l-DOPA)-based self-assembled nanodrug (NanoDOPA) prepared from amphiphilic block copolymers possessing poly(l-DOPA(OAc)2), which is a precursor of l-DOPA as a hydrophobic segment, for treatment in a PD model mouse. Under physiological enzyme treatments, NanoDOPA was hydrolyzed to liberate l-DOPA gradually, improving the pharmacokinetic value of l-DOPA. The mice treated with NanoDOPA significantly improved PD symptoms compared to the l-DOPA treatment in a neurotoxin-induced PD mouse model. Interestingly, NanoDOPA treatment did not cause dyskinesia symptoms, which was observed in the l-DOPA-treated mice. The obtained results in this study suggested that self-assembled NanoDOPA is a promising therapeutic in the treatment of PD.
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Miyazaki I, Isooka N, Imafuku F, Sun J, Kikuoka R, Furukawa C, Asanuma M. Chronic Systemic Exposure to Low-Dose Rotenone Induced Central and Peripheral Neuropathology and Motor Deficits in Mice: Reproducible Animal Model of Parkinson's Disease. Int J Mol Sci 2020; 21:ijms21093254. [PMID: 32375371 PMCID: PMC7246801 DOI: 10.3390/ijms21093254] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/03/2020] [Indexed: 12/21/2022] Open
Abstract
Epidemiological studies demonstrated that pesticide exposure, such as rotenone and paraquat, increases the risk of Parkinson’s disease (PD). Chronic systemic exposure to rotenone, a mitochondrial complex I inhibitor, could reproduce many features of PD. However, the adoption of the models is limiting because of variability in animal sensitivity and the inability of other investigators to consistently reproduce the PD neuropathology. In addition, most of rotenone models were produced in rats. Here, we tried to establish a high-reproducible rotenone model using C57BL/6J mice. The rotenone mouse model was produced by chronic systemic exposure to a low dose of rotenone (2.5 mg/kg/day) for 4 weeks by subcutaneous implantation of rotenone-filled osmotic mini pump. The rotenone-treated mice exhibited motor deficits assessed by open field, rotarod and cylinder test and gastrointestinal dysfunction. Rotenone treatment decreased the number of dopaminergic neuronal cells in the substantia nigra pars compacta (SNpc) and lesioned nerve terminal in the striatum. In addition, we observed significant reduction of cholinergic neurons in the dorsal motor nucleus of the vagus (DMV) and the intestinal myenteric plexus. Moreover, α-synuclein was accumulated in neuronal soma in the SNpc, DMV and intestinal myenteric plexus in rotenone-treated mice. These data suggest that the low-dose rotenone mouse model could reproduce behavioral and central and peripheral neurodegenerative features of PD and be a useful model for investigation of PD pathogenesis.
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Cheng XY, Biswas S, Li J, Mao CJ, Chechneva O, Chen J, Li K, Li J, Zhang JR, Liu CF, Deng WB. Human iPSCs derived astrocytes rescue rotenone-induced mitochondrial dysfunction and dopaminergic neurodegeneration in vitro by donating functional mitochondria. Transl Neurodegener 2020; 9:13. [PMID: 32345341 PMCID: PMC7325238 DOI: 10.1186/s40035-020-00190-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 03/23/2020] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is one of the neurodegeneration diseases characterized by the gradual loss of dopaminergic (DA) neurons in the substantia nigra region of the brain. Substantial evidence indicates that at the cellular level mitochondrial dysfunction is a key factor leading to pathological features such as neuronal death and accumulation of misfolded α-synuclein aggregations. Autologous transplantation of healthy purified mitochondria has shown to attenuate phenotypes in vitro and in vivo models of PD. However, there are significant technical difficulties in obtaining large amounts of purified mitochondria with normal function. In addition, the half-life of mitochondria varies between days to a few weeks. Thus, identifying a continuous source of healthy mitochondria via intercellular mitochondrial transfer is an attractive option for therapeutic purposes. In this study, we asked whether iPSCs derived astrocytes can serve as a donor to provide functional mitochondria and rescue injured DA neurons after rotenone exposure in an in vitro model of PD. METHODS We generated DA neurons and astrocytes from human iPSCs and hESCs. We established an astroglial-neuronal co-culture system to investigate the intercellular mitochondrial transfer, as well as the neuroprotective effect of mitochondrial transfer. We employed immunocytochemistry and FACS analysis to track mitochondria. RESULTS We showed evidence that iPSCs-derived astrocytes or astrocytic conditioned media (ACM) can rescue DA neurons degeneration via intercellular mitochondrial transfer in a rotenone induced in vitro PD model. Specifically, we showed that iPSCs-derived astrocytes from health spontaneously release functional mitochondria into the media. Mito-Tracker Green tagged astrocytic mitochondria were detected in the ACM and were shown to be internalized by the injured neurons via a phospho-p38 depended pathway. Transferred mitochondria were able to significantly reverse DA neurodegeneration and axonal pruning following exposure to rotenone. When rotenone injured neurons were cultured in presence of ACM depleted of mitochondria (by ultrafiltration), the neuroprotective effects were abolished. CONCLUSIONS Our studies provide the proof of principle that iPSCs-derived astrocytes can act as mitochondria donor to the injured DA neurons and attenuate pathology. Using iPSCs derived astrocytes as a donor can provide a novel strategy that can be further developed for cellular therapy for PD.
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Affiliation(s)
- Xiao-Yu Cheng
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817 USA
| | - Sangita Biswas
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817 USA
- Shriners Hospital for Children of Northern California, Sacramento, CA 95817 USA
| | - Juan Li
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004 China
- Key Laboratory of Hui Medicine Modernization, Ministry of Education, Yinchuan, 750004 China
| | - Cheng-Jie Mao
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Olga Chechneva
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817 USA
| | - Jing Chen
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Kai Li
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Jiao Li
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Jin-Ru Zhang
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Chun-Feng Liu
- Department of Neurology and Suzhou Clinical Research of Neurological Diseases, The Second Affiliated Hospital of Soochow University, Suzhou, 215004 China
| | - Wen-Bin Deng
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817 USA
- Shriners Hospital for Children of Northern California, Sacramento, CA 95817 USA
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Reversal of hyperactive subthalamic circuits differentially mitigates pain hypersensitivity phenotypes in parkinsonian mice. Proc Natl Acad Sci U S A 2020; 117:10045-10054. [PMID: 32312820 PMCID: PMC7211985 DOI: 10.1073/pnas.1916263117] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Treatments for pain symptoms in patients with Parkinson’s disease (PD) show inconsistent efficacy across clinical trials, largely owing to our limited understanding of the mechanisms underlying PD pain. Here, we demonstrate that overactivation of subthalamic nucleus (STN) neurons and their projections is adequate to produce a pain hypersensitivity phenotype, and that such overactivation is essential for the hypersensitivity in pain processing pathways and the maintenance of pain hypersensitivity observed in parkinsonian mice. These results suggest that inhibition of STN neurons may be a potential therapeutic strategy for pain relief in PD. Our finding that individual STN projections differentially regulate mechanical and thermal pain thresholds raises the possibility that individual STN projections may be optimal therapeutic targets for different pain phenotypes. Although pain is a prevalent nonmotor symptom in Parkinson’s disease (PD), it is undertreated, in part because of our limited understanding of the underlying mechanisms. Considering that the basal ganglia are implicated in pain sensation, and that their synaptic outputs are controlled by the subthalamic nucleus (STN), we hypothesized that the STN might play a critical role in parkinsonian pain hypersensitivity. To test this hypothesis, we established a unilateral parkinsonian mouse model with moderate lesions of dopaminergic neurons in the substantia nigra. The mice displayed pain hypersensitivity and neuronal hyperactivity in the ipsilesional STN and in central pain-processing nuclei. Optogenetic inhibition of STN neurons reversed pain hypersensitivity phenotypes in parkinsonian mice, while hyperactivity in the STN was sufficient to induce pain hypersensitivity in control mice. We further demonstrated that the STN differentially regulates thermal and mechanical pain thresholds through its projections to the substantia nigra pars reticulata (SNr) and the internal segment of the globus pallidus (GPi)/ventral pallidum (VP), respectively. Interestingly, optogenetic inhibition of STN-GPi/STN-VP and STN-SNr projections differentially elevated mechanical and thermal pain thresholds in parkinsonian mice. In summary, our results support the hypothesis that the STN and its divergent projections play critical roles in modulating pain processing under both physiological and parkinsonian conditions, and suggest that inhibition of individual STN projections may be a therapeutic strategy to relieve distinct pain phenotypes in PD.
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Historical Perspective: Models of Parkinson's Disease. Int J Mol Sci 2020; 21:ijms21072464. [PMID: 32252301 PMCID: PMC7177377 DOI: 10.3390/ijms21072464] [Citation(s) in RCA: 178] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023] Open
Abstract
Parkinson’s disease (PD) is the most common movement disorder with motor and nonmotor signs. The current therapeutic regimen for PD is mainly symptomatic as the etio-pathophysiology has not been fully elucidated. A variety of animal models has been generated to study different aspects of the disease for understanding the pathogenesis and therapeutic development. The disease model can be generated through neurotoxin-based or genetic-based approaches in a wide range of animals such as non-human primates (NHP), rodents, zebrafish, Caenorhabditis (C.) elegans, and drosophila. Cellular-based disease model is frequently used because of the ease of manipulation and suitability for large-screen assays. In neurotoxin-induced models, chemicals such as 6-hydroxydopamine (6-OHDA), 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), rotenone, and paraquat are used to recapitulate the disease. Genetic manipulation of PD-related genes, such as α-Synuclein(SNCA), Leucine-rich repeat kinase 2 (LRRK2), Pten-Induced Kinase 1 (PINK1), Parkin(PRKN), and Protein deglycase (DJ-1) Are used in the transgenic models. An emerging model that combines both genetic- and neurotoxin-based methods has been generated to study the role of the immune system in the pathogenesis of PD. Here, we discuss the advantages and limitations of the different PD models and their utility for different research purposes.
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137
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Diniz LP, Matias I, Araujo APB, Garcia MN, Barros-Aragão FGQ, Alves-Leon SV, de Souza JM, Foguel D, Figueiredo CP, Braga C, Romão L, Gomes FCA. α-synuclein oligomers enhance astrocyte-induced synapse formation through TGF-β1 signaling in a Parkinson's disease model. J Neurochem 2020; 150:138-157. [PMID: 31009074 DOI: 10.1111/jnc.14710] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 12/12/2022]
Abstract
Parkinson's disease (PD) is characterized by selective death of dopaminergic neurons in the substantia nigra, degeneration of the nigrostriatal pathway, increases in glutamatergic synapses in the striatum and aggregation of α-synuclein. Evidence suggests that oligomeric species of α-synuclein (αSO) are the genuine neurotoxins of PD. Although several studies have supported the direct neurotoxic effects of αSO on neurons, their effects on astrocytes have not been directly addressed. Astrocytes are essential to several steps of synapse formation and function, including secretion of synaptogenic factors, control of synaptic elimination and stabilization, secretion of neural/glial modulators, and modulation of extracellular ions, and neurotransmitter levels in the synaptic cleft. Here, we show that αSO induced the astrocyte reactivity and enhanced the synaptogenic capacity of human and murine astrocytes by increasing the levels of the known synaptogenic molecule transforming growth factor beta 1 (TGF-β1). Moreover, intracerebroventricular injection of αSO in mice increased the number of astrocytes, the density of excitatory synapses, and the levels of TGF-β1 in the striatum of injected animals. Inhibition of TGF-β1 signaling impaired the effect of the astrocyte-conditioned medium on glutamatergic synapse formation in vitro and on striatal synapse formation in vivo, whereas addition of TGF-β1 protected mesencephalic neurons against synapse loss triggered by αSO. Together, our data suggest that αSO have important effects on astrocytic functions and describe TGF-β1 as a new endogenous astrocyte-derived molecule involved in the increase in striatal glutamatergic synaptic density present in early stages of PD. OPEN SCIENCE BADGES: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/. Cover Image for this issue: doi: 10.1111/jnc.14514.
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Affiliation(s)
- Luan Pereira Diniz
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Isadora Matias
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Ana Paula Bérgamo Araujo
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Matheus Nunes Garcia
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | | | - Soniza Vieira Alves-Leon
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Jorge Marcondes de Souza
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Débora Foguel
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | | | - Carolina Braga
- Núcleo Multidisciplinar de Pesquisa em Biologia - NUMPEX-BIO, Campus Duque de Caxias Professor Geraldo Cidade, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Luciana Romão
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
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138
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Cristóvão AC, Campos FL, Je G, Esteves M, Guhathakurta S, Yang L, Beal MF, Fonseca BM, Salgado AJ, Queiroz J, Sousa N, Bernardino L, Alves G, Yoon KS, Kim YS. Characterization of a Parkinson's disease rat model using an upgraded paraquat exposure paradigm. Eur J Neurosci 2020; 52:3242-3255. [PMID: 31958881 DOI: 10.1111/ejn.14683] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/12/2022]
Abstract
Animal models of human diseases are crucial experimental tools to investigate the mechanisms involved in disease pathogenesis and to develop new therapies. In spite of the numerous animal models currently available that reproduce several neuropathological features of Parkinson disease (PD), it is challenging to have one that consistently recapitulates human PD conditions in both motor behaviors and biochemical pathological outcomes. Given that, we have implemented a new paradigm to expose rats to a chronic low dose of paraquat (PQ), using osmotic minipumps and characterized the developed pathologic features over time. The PQ exposure paradigm used lead to a rodent model of PD depicting progressive nigrostriatal dopaminergic neurodegeneration, characterized by a 41% significant loss of dopaminergic neuron in the substantia nigra pars compacta (SNpc), a significant decrease of 18% and 40% of dopamine levels in striatum at week 5 and 8, respectively, and a significant 1.5-fold decrease in motor performance. We observed a significant increase of microglia activation state, sustained levels of α-synucleinopathy and increased oxidative stress markers in the SNpc. In summary, this is an explorative study that allowed to characterize an improved PQ-based rat model that recapitulates cardinal features of PD and may represent an attractive tool to investigate several mechanisms underlying the various aspects of PD pathogenesis as well as for the validation of the efficacy of new therapeutic approaches that targets different mechanisms involved in PD neurodegeneration.
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Affiliation(s)
- Ana Clara Cristóvão
- CICS-UBI Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal.,NeuroSoV, UBIMedical, Universidade da Beira Interior, Covilhã, Portugal
| | - Filipa L Campos
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Goun Je
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Marta Esteves
- CICS-UBI Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Subhrangshu Guhathakurta
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Lichuan Yang
- Neuroscience Department, Weill Medical College of Cornell University, New York, NY, USA
| | - M Flint Beal
- Neuroscience Department, Weill Medical College of Cornell University, New York, NY, USA
| | - Beatriz M Fonseca
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Antonio J Salgado
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João Queiroz
- CICS-UBI Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Liliana Bernardino
- CICS-UBI Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal
| | - Gilberto Alves
- CICS-UBI Health Sciences Research Center, University of Beira Interior, Covilhã, Portugal.,CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Kyung-Sik Yoon
- Department of Biochemistry and Molecular Biology, Kyung-Hee University Medical College, Seoul, South Korea
| | - Yoon-Seong Kim
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA.,Department of Biochemistry and Molecular Biology, Kyung-Hee University Medical College, Seoul, South Korea
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139
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Andreeva-Gateva P, Traikov L, Sabit Z, Bakalov D, Tafradjiiska-Hadjiolova R. Antioxidant Effect of Alpha-Lipoic Acid in 6-Hydroxydopamine Unilateral Intrastriatal Injected Rats. Antioxidants (Basel) 2020; 9:E122. [PMID: 32024109 PMCID: PMC7070677 DOI: 10.3390/antiox9020122] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 12/13/2022] Open
Abstract
The toxin 6-hydroxydopamine (6-OHDA) is a highly oxidizable dopamine (DA) analog that is widely used for reproducing several cell processes identified in Parkinson's disease (PD). Due to the close similarity of its neurotoxic mechanism to those of DA, it is suitable as a model for testing the effects of potentially neuroprotective drugs. This study aimed to evaluate the effect of alpha-lipoic acid (LA) on brain oxidative stress (OS) in unilateral intrastriatal (6-OHDA) injected rats. Forty male Wistar rats, four months old (220-260 g), were evaluated. Half of them received LA (35 mg/kg i.p.) from the start to the end of the experiment. On day 2 of the trial, ten LA-supplemented rats and ten non-LA-supplemented rats were subjected to the apomorphine test. Brain homogenates were evaluated for thiobarbituric acid-reactive substances (TBARS) and glutathione peroxidase (GPx) activity. The same evaluation procedures were repeated on day 14 with the remaining animals. An increased TBARS level and decreased GPx activity, suggestive for OS, were recorded in homogenates on day 14 vs. day 2 of the experiment in the 6-OHDA treated rats. The simultaneous application of LA mitigated these changes. Our study demonstrates that the low dose of LA could be of value for decreasing the OS of the neurotoxic 6-OHDA, supporting the need for further studies of the benefit of LA treatment in PD.
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Affiliation(s)
- Pavlina Andreeva-Gateva
- Department of Pharmacology and Toxicology, Faculty of Medicine, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Lubomir Traikov
- Department of Medical Physics and Biophysics, Faculty of Medicine, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Zafer Sabit
- Department of Pathophysiology, Faculty of Medicine, Medical University-Sofia, 1431 Sofia, Bulgaria
| | - Dimitar Bakalov
- Department of Pathophysiology, Faculty of Medicine, Medical University-Sofia, 1431 Sofia, Bulgaria
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140
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Barilar JO, Knezovic A, Perhoc AB, Homolak J, Riederer P, Salkovic-Petrisic M. Shared cerebral metabolic pathology in non-transgenic animal models of Alzheimer's and Parkinson's disease. J Neural Transm (Vienna) 2020; 127:231-250. [PMID: 32030485 PMCID: PMC7035309 DOI: 10.1007/s00702-020-02152-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/24/2020] [Indexed: 12/25/2022]
Abstract
Parkinson's disease (PD) and Alzheimer's disease (AD) are the most common chronic neurodegenerative disorders, characterized by motoric dysfunction or cognitive decline in the early stage, respectively, but often by both symptoms in the advanced stage. Among underlying molecular pathologies that PD and AD patients have in common, more attention is recently paid to the central metabolic dysfunction presented as insulin resistant brain state (IRBS) and altered cerebral glucose metabolism, both also explored in animal models of these diseases. This review aims to compare IRBS and alterations in cerebral glucose metabolism in representative non-transgenic animal PD and AD models. The comparison is based on the selectivity of the neurotoxins which cause experimental PD and AD, towards the cellular membrane and intracellular molecular targets as well as towards the selective neurons/non-neuronal cells, and the particular brain regions. Mitochondrial damage and co-expression of insulin receptors, glucose transporter-2 and dopamine transporter on the membrane of particular neurons as well as astrocytes seem to be the key points which are further discussed in a context of alterations in insulin signalling in the brain and its interaction with dopaminergic transmission, particularly regarding the time frame of the experimental AD/PD pathology appearance and the correlation with cognitive and motor symptoms. Such a perspective provides evidence on IRBS being a common underlying metabolic pathology and a contributor to neurodegenerative processes in representative non-transgenic animal PD and AD models, instead of being a direct cause of a particular neurodegenerative disorder.
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Affiliation(s)
- Jelena Osmanovic Barilar
- Department of Pharmacology, University of Zagreb School of Medicine, Salata 11, 10 000, Zagreb, Croatia
| | - Ana Knezovic
- Department of Pharmacology, University of Zagreb School of Medicine, Salata 11, 10 000, Zagreb, Croatia
| | - Ana Babic Perhoc
- Department of Pharmacology, University of Zagreb School of Medicine, Salata 11, 10 000, Zagreb, Croatia
| | - Jan Homolak
- Department of Pharmacology, University of Zagreb School of Medicine, Salata 11, 10 000, Zagreb, Croatia
| | - Peter Riederer
- Center of Mental Health, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital, Würzburg, Füchsleinstrasse 15, 97080, Würzburg, Germany
- Department and Research Unit of Psychiatry, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Melita Salkovic-Petrisic
- Department of Pharmacology, University of Zagreb School of Medicine, Salata 11, 10 000, Zagreb, Croatia.
- Institute of Fundamental Clinical and Translational Neuroscience, Research Centre of Excellence, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Salata 12, 10 000, Zagreb, Croatia.
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141
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Rai SN, Singh P. Advancement in the modelling and therapeutics of Parkinson's disease. J Chem Neuroanat 2020; 104:101752. [PMID: 31996329 DOI: 10.1016/j.jchemneu.2020.101752] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/19/2020] [Accepted: 01/20/2020] [Indexed: 02/08/2023]
Abstract
Since the discovery of L-dopa in the middle of the 20th century (1960s), there is not any neuroprotective therapy available although significant development has been made in the treatment of symptomatic Parkinson's disease (PD). Neurological disorders like PD can be modelled in animals so as to recapitulates most of the symptoms seen in PD patients. In aging population, PD is the second most common neurodegenerative disease after Alzheimer's disease, even though significant outcomes have been achieved in PD research yet it still is a mystery to solve the treatments for PD. In the last two decades, PD models have provided enhanced precision into the understanding of the process of PD disease, its etiology, pathology, and molecular mechanisms behind it. Furthermore, at the same time as cellular models have helped to recognize specific events, animal models, both toxic and genetic, have replicated almost all of the hallmarks of PD and are very helpful for testing and finding new strategies for neuroprotection. Recently, in both classical and newer models, major advances have been done in the modelling of supplementary PD features have come into the light. In this review, we have try to provide an updated summary of the characteristics of these models related to in vitro and in vivo models, animal models for PD, stem cell model for PD, newer 3D model as well as the strengths and limitations of these most popular PD models.
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Affiliation(s)
- Sachchida Nand Rai
- Department of Zoology, Mahila Maha Vidhyalaya, Institute of Science, Banaras Hindu University, Varanasi, India.
| | - Payal Singh
- Department of Zoology, Mahila Maha Vidhyalaya, Institute of Science, Banaras Hindu University, Varanasi, India.
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142
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Takeuchi Y, Berényi A. Oscillotherapeutics - Time-targeted interventions in epilepsy and beyond. Neurosci Res 2020; 152:87-107. [PMID: 31954733 DOI: 10.1016/j.neures.2020.01.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 02/09/2023]
Abstract
Oscillatory brain activities support many physiological functions from motor control to cognition. Disruptions of the normal oscillatory brain activities are commonly observed in neurological and psychiatric disorders including epilepsy, Parkinson's disease, Alzheimer's disease, schizophrenia, anxiety/trauma-related disorders, major depressive disorders, and drug addiction. Therefore, these disorders can be considered as common oscillation defects despite having distinct behavioral manifestations and genetic causes. Recent technical advances of neuronal activity recording and analysis have allowed us to study the pathological oscillations of each disorder as a possible biomarker of symptoms. Furthermore, recent advances in brain stimulation technologies enable time- and space-targeted interventions of the pathological oscillations of both neurological disorders and psychiatric disorders as possible targets for regulating their symptoms.
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Affiliation(s)
- Yuichi Takeuchi
- MTA-SZTE 'Momentum' Oscillatory Neuronal Networks Research Group, Department of Physiology, University of Szeged, Szeged, 6720, Hungary; Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan.
| | - Antal Berényi
- MTA-SZTE 'Momentum' Oscillatory Neuronal Networks Research Group, Department of Physiology, University of Szeged, Szeged, 6720, Hungary; HCEMM-SZTE Magnetotherapeutics Research Group, University of Szeged, Szeged, 6720, Hungary; Neuroscience Institute, New York University, New York, NY 10016, USA.
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143
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de Lucena JD, Gadelha-Filho CVJ, da Costa RO, de Araújo DP, Lima FAV, Neves KRT, de Barros Viana GS. L-linalool exerts a neuroprotective action on hemiparkinsonian rats. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1077-1088. [DOI: 10.1007/s00210-019-01793-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 12/05/2019] [Indexed: 12/13/2022]
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144
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Kasabova-Angelova A, Kondeva-Burdina M, Mitkov J, Georgieva M, Tzankova V, Zlatkov A. Neuroprotective and MAOB inhibitory effects of a series of caffeine-8-thioglycolic acid amides. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000318255] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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145
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Varešlija D, Tipton KF, Davey GP, McDonald AG. 6-Hydroxydopamine: a far from simple neurotoxin. J Neural Transm (Vienna) 2020; 127:213-230. [DOI: 10.1007/s00702-019-02133-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 12/21/2019] [Indexed: 12/13/2022]
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146
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Oliveira LOD, da Silva PIC, Filho RPR, Progênio RCS, de Oliveira VDPS, Silva RC, de Andrade MC, da Silva Freitas JJ, Kietzer KS. Prior exercise protects against oxidative stress and motor deficit in a rat model of Parkinson's disease. Metab Brain Dis 2020; 35:175-181. [PMID: 31782038 DOI: 10.1007/s11011-019-00507-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 10/15/2019] [Indexed: 11/29/2022]
Abstract
This study investigated if a prior long-term physical exercise protocol protects the substantia nigra and the striatum against oxidative stress and motor deficits in a Parkinson Disease model induced by 6-hydroxydopamine. Three animal treatment groups were included in the study: sham; 6-hydroxydopamine and 6-hydroxydopamine/exercise. Previously to the intrastriatal lesion by 6-hydroxydopamine, rats in the exercise groups performed a swimming program for 18 weeks. The rats were submitted to behavioral tests before and after intrastriatal 6-hydroxydopamine injection. The oxidative stress was analyzed by Thiobarbituric Acid Reactive Substances and Glutathione reductase activity methods. The exercise decreased lipid peroxidation and increased glutathione reductase activity in the substantia nigra. In contrast, in the striatum, exercise increased lipid peroxidation and decreased glutathione reductase activity. Exercise increased contralateral rotations and reduces immobility levels at 14 days post lesion. The exercise prior to 6-OHDA lesion had protective action only in substantia nigra against oxidative stress.
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Affiliation(s)
- Leonam Oliver Durval Oliveira
- Laboratory of Morphophysiology Applied to Health, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil.
| | - Pedro Iuri Castro da Silva
- Laboratory of Morphophysiology Applied to Health, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
| | - Renato Pereira Rodrigues Filho
- Laboratory of Morphophysiology Applied to Health, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
| | | | | | - Renata Cunha Silva
- Laboratory of Morphophysiology Applied to Health, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
| | - Mariseth Carvalho de Andrade
- Laboratory of Morphophysiology Applied to Health, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
| | - Jofre Jacob da Silva Freitas
- Morphology and Physiological Sciences Department, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
| | - Katia Simone Kietzer
- Morphology and Physiological Sciences Department, University of Pará State, Perebebuí Street 2623, Marco, Belém, PA, 66087662, Brazil
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147
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Comprehensive Analysis of Neurotoxin-Induced Ablation of Dopaminergic Neurons in Zebrafish Larvae. Biomedicines 2019; 8:biomedicines8010001. [PMID: 31905670 PMCID: PMC7168159 DOI: 10.3390/biomedicines8010001] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/24/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022] Open
Abstract
Neurotoxin exposure of zebrafish larvae has been used to mimic a Parkinson’s disease (PD) phenotype and to facilitate high-throughput drug screening. However, the vulnerability of zebrafish to various neurotoxins was shown to be variable. Here, we provide a direct comparison of ablative effectiveness in order to identify the optimal neurotoxin-mediated dopaminergic (DAnergic) neuronal death in larval zebrafish. Transgenic zebrafish, Tg(dat:eGFP), were exposed to different concentrations of the neurotoxins MPTP, MPP+, paraquat, 6-OHDA, and rotenone for four days, starting at three days post-fertilization. The LC50 of each respective neurotoxin concentration was determined. Confocal live imaging on Tg(dat:eGFP) showed that MPTP, MPP+, and rotenone caused comparable DAnergic cell loss in the ventral diencephalon (vDC) region while, paraquat and 6-OHDA caused fewer losses of DAnergic cells. These results were further supported by respective gene expression analyses of dat, th, and p53. Importantly, the loss of DAnergic cells from exposure to MPTP, MPP+, and rotenone impacted larval locomotor function. MPTP induced the largest motor deficit, but this was accompanied by the most severe morphological impairment. We conclude that, of the tested neurotoxins, MPP+ recapitulates a substantial degree of DAnergic ablation and slight locomotor perturbations without systemic defects indicative of a Parkinsonian phenotype.
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148
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Kim B, Park JY, Cho DY, Ko HM, Yoon SH, Choi DK. 2-(5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazol-3-yl)-N-(2-hydroxyethyl)-2-oxoacetamide (CDMPO) has anti-inflammatory properties in microglial cells and prevents neuronal and behavioral deficits in MPTP mouse model of Parkinson's disease. Neuropharmacology 2019; 166:107928. [PMID: 31887307 DOI: 10.1016/j.neuropharm.2019.107928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/25/2019] [Accepted: 12/23/2019] [Indexed: 10/25/2022]
Abstract
Parkinson's disease (PD) is characterized by the selective loss of nigrostriatal dopamine neurons associated with microglial activation. Inhibition of the inflammatory response elicited by activated microglia could be an effective strategy to alleviate the progression of PD. Here, we synthesized 2-(5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazol-3-yl)-N-(2-hydroxyethyl)-2-oxoacetamide (CDMPO) and studied its protective anti-inflammatory mechanisms following lipopolysaccharide (LPS)-induced neuroinflammation in vitro and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurotoxicity in vivo. CDMPO and its parent compound, rimonabant, significantly attenuated nitric oxide (NO) production in LPS-stimulated primary microglia and BV2 cells. Furthermore, CDMPO significantly inhibited the release of proinflammatory cytokines and prostaglandin E2 (PGE2) by activated BV2 cells, also suppressed expression of inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2). Mechanistically, CDMPO attenuated LPS-induced activation of nuclear factor-kappa B (NF-κB), inhibitor of kappa B alpha (IκBα), and p38 phosphorylation in BV2 cells. MPTP intoxication of mice results in glial activation, tyrosine hydroxylase (TH) depletion, and significant behavioral deficits. Prophylactic treatment with CDMPO decreased proinflammatory molecules via NF-κB and p38 mitogen-activated protein kinase signaling, resulting in protection of dopaminergic neurons and improved behavioral impairments. These results suggest that CDMPO is a promising neuroprotective agent for the prevention and treatment of microglia-mediated neuroinflammatory conditions and may be useful for behavioral improvement in PD phenotype.
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Affiliation(s)
- Byungwook Kim
- Department of Applied Life Science, BK21plus Glocal Education Program of Nutraceuticals Development, Konkuk University, Chungju, 27478, Republic of Korea.
| | - Ju-Young Park
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Duk-Yeon Cho
- Department of Applied Life Science, BK21plus Glocal Education Program of Nutraceuticals Development, Konkuk University, Chungju, 27478, Republic of Korea
| | - Hyun Myung Ko
- Department of Biotechnology, Konkuk University, Chungju, 27478, Republic of Korea
| | - Sung-Hwa Yoon
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea.
| | - Dong-Kug Choi
- Department of Applied Life Science, BK21plus Glocal Education Program of Nutraceuticals Development, Konkuk University, Chungju, 27478, Republic of Korea; Department of Biotechnology, Konkuk University, Chungju, 27478, Republic of Korea.
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Kilzheimer A, Hentrich T, Burkhardt S, Schulze-Hentrich JM. The Challenge and Opportunity to Diagnose Parkinson's Disease in Midlife. Front Neurol 2019; 10:1328. [PMID: 31920948 PMCID: PMC6928126 DOI: 10.3389/fneur.2019.01328] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 12/02/2019] [Indexed: 12/16/2022] Open
Abstract
Parkinson's disease (PD) is the most common neurodegenerative movement disorder that affects extensive regions of the nervous system. Its current clinical diagnosis is based on motor symptoms that appear late during disease progression when substantial proportions of the nigrostriatal dopaminergic neuron population are lost already. Although disturbances in sleep and other biofunctions often surface years prior to motor impairments and point to a long prodromal phase, these phenotypic signs in a person's midlife lack predictive power. They do, however, signal the unfolding of the disease and suggest molecular correlates that begin deviating early on. Revealing such trajectories, hence, promises not only a better understanding of prodromal PD but may also enable a much-needed earlier diagnosis. A nexus that may harbor such molecular trajectories is the epigenome as key etiological factors of PD-genetics, age, and environment-influence this substrate. An earlier diagnosis would also allow earlier interventions and lifestyle adjustments to improve brain function and reduce symptoms. In this review, we describe the challenges of diagnosing PD early on and highlight the opportunities that may arise from steering research efforts towards comprehensive interrogations of molecular layers during the long-time neglected midlife phase. In particular, we emphasize how existing cohorts of at-risk individuals, available animal models, and suitable markers may come together and aid in revealing molecular trajectories that offer diagnostic utility for PD in its prodromal stage.
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150
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Tang Y, Yang XK, Zhang XW, Wu WT, Zhang FL, Jiang H, Liu YL, Amatore C, Huang WH. Harpagide, a natural product, promotes synaptic vesicle release as measured by nanoelectrode amperometry. Chem Sci 2019; 11:778-785. [PMID: 34123052 PMCID: PMC8146302 DOI: 10.1039/c9sc05538j] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive loss of dopaminergic (DAergic) neurons and low level of dopamine (DA) in the midbrain. Recent studies suggested that some natural products can protect neurons against injury, but their role on neurotransmitter release and the underlying mechanisms remained unknown. In this work, nanoelectrode electrochemistry was used for the first time to quantify DA release inside single DAergic synapses. Our results unambiguously demonstrated that harpagide, a natural product, effectively enhances synaptic DA release and restores DA release at normal levels from injured neurons in PD model. These important protective and curative effects are shown to result from the fact that harpagide efficiently inhibits the phosphorylation and aggregation of α-synuclein by alleviating the intracellular reactive oxygen level, being beneficial for vesicle loading and recycling. This establishes that harpagide offers promising avenues for preventive or therapeutic interventions against PD and other neurodegenerative disorders.
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Affiliation(s)
- Yun Tang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Xiao-Ke Yang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Xin-Wei Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Wen-Tao Wu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Fu-Li Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Hong Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Yan-Ling Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
| | - Christian Amatore
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
- PASTEUR, Departement de Chimie, Pcole Normale Superieure, PSL Research University, Sorbonne Universites, UPMC Univ. Paris 06, CNRS 24 rue Lhomond 75005 Paris France
| | - Wei-Hua Huang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China
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