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Gundersen V. Parkinson's Disease: Can Targeting Inflammation Be an Effective Neuroprotective Strategy? Front Neurosci 2021; 14:580311. [PMID: 33716638 PMCID: PMC7946840 DOI: 10.3389/fnins.2020.580311] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022] Open
Abstract
The reason why dopamine neurons die in Parkinson’s disease remains largely unknown. Emerging evidence points to a role for brain inflammation in neurodegeneration. Essential questions are whether brain inflammation happens sufficiently early so that interfering with this process can be expected to slow down neuronal death and whether the contribution from inflammation is large enough so that anti-inflammatory agents can be expected to work. Here I discuss data from human PD studies indicating that brain inflammation is an early event in PD. I also discuss the role of T-lymphocytes and peripheral inflammation for neurodegeneration. I critically discuss the failure of clinical trials targeting inflammation in PD.
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Affiliation(s)
- Vidar Gundersen
- Section for Movement Disorders, Department of Neurology, Oslo University Hospital, Oslo, Norway
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van Vuuren MJ, Nell TA, Carr JA, Kell DB, Pretorius E. Iron Dysregulation and Inflammagens Related to Oral and Gut Health Are Central to the Development of Parkinson's Disease. Biomolecules 2020; 11:E30. [PMID: 33383805 PMCID: PMC7823713 DOI: 10.3390/biom11010030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/16/2020] [Accepted: 12/24/2020] [Indexed: 12/12/2022] Open
Abstract
Neuronal lesions in Parkinson's disease (PD) are commonly associated with α-synuclein (α-Syn)-induced cell damage that are present both in the central and peripheral nervous systems of patients, with the enteric nervous system also being especially vulnerable. Here, we bring together evidence that the development and presence of PD depends on specific sets of interlinking factors that include neuroinflammation, systemic inflammation, α-Syn-induced cell damage, vascular dysfunction, iron dysregulation, and gut and periodontal dysbiosis. We argue that there is significant evidence that bacterial inflammagens fuel this systemic inflammation, and might be central to the development of PD. We also discuss the processes whereby bacterial inflammagens may be involved in causing nucleation of proteins, including of α-Syn. Lastly, we review evidence that iron chelation, pre-and probiotics, as well as antibiotics and faecal transplant treatment might be valuable treatments in PD. A most important consideration, however, is that these therapeutic options need to be validated and tested in randomized controlled clinical trials. However, targeting underlying mechanisms of PD, including gut dysbiosis and iron toxicity, have potentially opened up possibilities of a wide variety of novel treatments, which may relieve the characteristic motor and nonmotor deficits of PD, and may even slow the progression and/or accompanying gut-related conditions of the disease.
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Affiliation(s)
- Marthinus Janse van Vuuren
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa; (M.J.v.V.); (T.A.N.)
| | - Theodore Albertus Nell
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa; (M.J.v.V.); (T.A.N.)
| | - Jonathan Ambrose Carr
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa
| | - Douglas B. Kell
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa; (M.J.v.V.); (T.A.N.)
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
- The Novo Nordisk Foundation Centre for Biosustainability, Technical University of Denmark, Building 220, Chemitorvet 200, 2800 Kongens Lyngby, Denmark
| | - Etheresia Pretorius
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch 7602, South Africa; (M.J.v.V.); (T.A.N.)
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53
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Liao JF, Cheng YF, You ST, Kuo WC, Huang CW, Chiou JJ, Hsu CC, Hsieh-Li HM, Wang S, Tsai YC. Lactobacillus plantarum PS128 alleviates neurodegenerative progression in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced mouse models of Parkinson's disease. Brain Behav Immun 2020; 90:26-46. [PMID: 32739365 DOI: 10.1016/j.bbi.2020.07.036] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Evidence suggests that the Parkinson's disease (PD) pathogenesis is strongly associated with bidirectional pathways in the microbiota-gut-brain axis (MGBA), and psychobiotics may inhibit PD progression. We previously reported that the novel psychobiotic strain, Lactobacillus plantarum PS128 (PS128), ameliorated abnormal behaviors and modulated neurotransmissions in dopaminergic pathways in rodent models. Here, we report that orally administering PS128 for 4 weeks significantly alleviated the motor deficits, elevation in corticosterone, nigrostriatal dopaminergic neuronal death, and striatal dopamine reduction in 1-methyl-4-phenyl-1,2,3,6-tetrathydropyridine (MPTP)-induced PD mouse models. PS128 ingestion suppressed glial cell hyperactivation and increased norepinephrine and neurotrophic factors in the striatum of the PD-model mice. PS128 administration also attenuated MPTP-induced oxidative stress and neuroinflammation in the nigrostriatal pathway. Fecal analysis showed that PS128 modulated the gut microbiota. L. plantarum abundance was significantly increased along with methionine biosynthesis-related microbial modules. PS128 also suppressed the increased family Enterobacteriaceae and lipopolysaccharide and peptidoglycan biosynthesis-related microbial modules caused by MPTP. In conclude, PS128 ingestion alleviated MPTP-induced motor deficits and neurotoxicity.PS128 supplementation inhibited neurodegenerative processes in PD-model mice and may help prevent PD.
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Affiliation(s)
- Jian-Fu Liao
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC
| | - Yun-Fang Cheng
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC; Microbiome Research Center, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC; Bened Biomedical Co. Ltd., 2F-2, No.129, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City 104, Taiwan, ROC
| | - Shu-Ting You
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC
| | - Wen-Chun Kuo
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC
| | - Chi-Wei Huang
- Center for Systems and Synthetic Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC
| | - Jen-Jie Chiou
- Center for Systems and Synthetic Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC
| | - Chih-Chieh Hsu
- Bened Biomedical Co. Ltd., 2F-2, No.129, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City 104, Taiwan, ROC
| | - Hsiu-Mei Hsieh-Li
- Department of Life Science, National Taiwan Normal University, 88, Section 4, Tingchow Rd., Wenshan Dist., Taipei City 116, Taiwan, ROC
| | - Sabrina Wang
- Institute of Anatomy and Cell Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC.
| | - Ying-Chieh Tsai
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC; Microbiome Research Center, National Yang-Ming University, 155, Section 2, Linong Street, Beitou Dist., Taipei City 11221, Taiwan, ROC.
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54
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Scassellati C, Galoforo AC, Bonvicini C, Esposito C, Ricevuti G. Ozone: a natural bioactive molecule with antioxidant property as potential new strategy in aging and in neurodegenerative disorders. Ageing Res Rev 2020; 63:101138. [PMID: 32810649 PMCID: PMC7428719 DOI: 10.1016/j.arr.2020.101138] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/14/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023]
Abstract
Systems medicine is founded on a mechanism-based approach and identifies in this way specific therapeutic targets. This approach has been applied for the transcription factor nuclear factor (erythroid-derived 2)-like 2 (Nrf2). Nrf2 plays a central role in different pathologies including neurodegenerative disorders (NDs), which are characterized by common pathogenetic features. We here present wide scientific background indicating how a natural bioactive molecule with antioxidant/anti-apoptotic and pro-autophagy properties such as the ozone (O3) can represent a potential new strategy to delay neurodegeneration. Our hypothesis is based on different evidence demonstrating the interaction between O3 and Nrf2 system. Through a meta-analytic approach, we found a significant modulation of O3 on endogenous antioxidant-Nrf2 (p < 0.00001, Odd Ratio (OR) = 1.71 95%CI:1.17-2.25) and vitagene-Nrf2 systems (p < 0.00001, OR = 1.80 95%CI:1.05-2.55). O3 activates also immune, anti-inflammatory signalling, proteasome, releases growth factors, improves blood circulation, and has antimicrobial activity, with potential effects on gut microbiota. Thus, we provide a consistent rationale to implement future clinical studies to apply the oxygen-ozone (O2-O3) therapy in an early phase of aging decline, when it is still possible to intervene before to potentially develop a more severe neurodegenerative pathology. We suggest that O3 along with other antioxidants (polyphenols, mushrooms) implicated in the same Nrf2-mechanisms, can show neurogenic potential, providing evidence as new preventive strategies in aging and in NDs.
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Affiliation(s)
- Catia Scassellati
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
| | - Antonio Carlo Galoforo
- Oxygen-Ozone Therapy Scientific Society (SIOOT), Gorle, Italy; University of Pavia, Pavia, Italy
| | - Cristian Bonvicini
- Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Ciro Esposito
- Department of Internal Medicine and Therapeutics, University of Pavia, Italy; Nephrology and dialysis unit, ICS S. Maugeri SPA SB Hospital, Pavia, Italy; High School in Geriatrics, University of Pavia, Italy
| | - Giovanni Ricevuti
- Department of Drug Sciences, University of Pavia, Italy; P.D. High School in Geriatrics, University of Pavia, Italy; St.Camillus Medical University, Rome, Italy
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55
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Desplats P, Gutierrez AM, Antonelli MC, Frasch MG. Microglial memory of early life stress and inflammation: Susceptibility to neurodegeneration in adulthood. Neurosci Biobehav Rev 2020; 117:232-242. [PMID: 31703966 PMCID: PMC7198341 DOI: 10.1016/j.neubiorev.2019.10.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 09/15/2019] [Accepted: 10/20/2019] [Indexed: 02/08/2023]
Abstract
We review evidence supporting the role of early life programming in the susceptibility for adult neurodegenerative diseases while highlighting questions and proposing avenues for future research to advance our understanding of this fundamental process. The key elements of this phenomenon are chronic stress, neuroinflammation triggering microglial polarization, microglial memory and their connection to neurodegeneration. We review the mediating mechanisms which may function as early biomarkers of increased susceptibility for neurodegeneration. Can we devise novel early life modifying interventions to steer developmental trajectories to their optimum?
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Affiliation(s)
- Paula Desplats
- Department of Neurosciences, University of California San Diego, CA, USA; Department of Pathology, University of California San Diego, CA, USA
| | - Ashley M Gutierrez
- Department of Neurosciences, University of California San Diego, CA, USA
| | - Marta C Antonelli
- Instituto de Biología Celular y Neurociencia "Prof. Eduardo De Robertis", Facultad de Medicina, Universidad de Buenos Aires, Argentina; Department of Obstetrics and Gynecology, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Martin G Frasch
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA, USA; Center on Human Development and Disability, University of Washington, Seattle, WA, USA.
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56
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Bayo-Olugbami A, Nafiu AB, Amin A, Ogundele OM, Lee CC, Owoyele BV. Vitamin D attenuated 6-OHDA-induced behavioural deficits, dopamine dysmetabolism, oxidative stress, and neuro-inflammation in mice. Nutr Neurosci 2020; 25:823-834. [PMID: 32912107 DOI: 10.1080/1028415x.2020.1815331] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Background: L-DOPA, the predominant therapy for Parkinson's disease (PD) is associated with motor deficits after prolonged use. The nigrostriatal tract, a primary target of neurodegeneration in PD, contains abundant Vitamin-D receptors, suggesting a potential role for VD in the disease. Therefore, we tested the impact of Vitamin D3 (VD3) in a mouse model of PD.Methods: PD was induced in adult male C57BL6 mice by a single intrastriatal injection of 6-hydroxydopamine. Two weeks post lesion, these mice received injections of a vehicle, VD3, L-DOPA, or a combination of VD3/L-DOPA and compared with sham controls. Treatment lasted three weeks, during which motor-cognitive neurobehaviour was assessed. Five weeks post lesion, brains were collected and striatal levels of the following proteins assessed: tyrosine hydroxylase (TH), dopamine decarboxylase (DDC), monoamine oxidase (MAO-B), Catechol-O-methyl transferase (COMT), dopamine transporter (DAT), brain-derived neurotrophic factor (BDNF), microglia marker (CD11b), inflammation (IL-1β), apoptotic signaling (BAX) and oxidative stress (p47phox).Results: Treatment with VD3 attenuated behavioural deficits induced by 6-OHDA, protein associated with dopamine metabolism and biomarkers of oxidative stress. VD3 significantly increased contralateral wall touches, exploratory motor and cognitive activities. VD3 significantly enhanced the expression of TH, DAT, BDNF, while significantly reducing expression of MAO-B, CD11b, IL-I β and p47phox.Conclusion: VD3 reversed some of the 6-OHDA induced changes in proteins involved in modulating the dopamine system, behavioural deficits and oxidative stress biomarkers. The data suggests that VD3 might be beneficial in reducing L-DOPA dosage, thereby reducing problems associated with dosage and prolonged use of L-DOPA in PD management.
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Affiliation(s)
| | | | - Abdulbasit Amin
- Neuroscience & Inflammation unit, Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - Olalekan Michael Ogundele
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Charles C Lee
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Bamidele Victor Owoyele
- Neuroscience & Inflammation unit, Department of Physiology, University of Ilorin, Ilorin, Nigeria
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57
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Tiwari S, Singh S. Reciprocal Upshot of Nitric Oxide, Endoplasmic Reticulum Stress, and Ubiquitin Proteasome System in Parkinson's Disease Pathology. Neuroscientist 2020; 27:340-354. [PMID: 32713286 DOI: 10.1177/1073858420942211] [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] [Indexed: 11/17/2022]
Abstract
Parkinson's disease (PD) pathology involves degeneration of nigrostriatal pathway, postulating symptoms associated with age, environment, and genetic anomalies, including nonlinear disease progression. Hallmark characteristics of PD include dopaminergic neuronal degeneration and death, which may also be exhibited by other neurological diseases, making the diagnosis of the disease intricate at early stage. Such obscure diagnosis of the disease, limited symptomatic improvements with available therapeutics, and their inability to modify the disease status instigate us to appraise the past research and formulate the colligating comprehensive insights. This review is accentuating on the role of nitric oxide, endoplasmic reticulum stress, and their association with the ubiquitin proteasome system (UPS) during PD pathology involving focus on ubiquitin ligases due to their regulatory functions. Meticulous understanding of these major disease-related pathological events and their functional alliance may render novel dimensions for better understanding of disease etiology, related mechanisms, as well as direction toward witnessing of new therapeutic targets for the management of Parkinson's patients.
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Affiliation(s)
- Shubhangini Tiwari
- Department of Neurosciences and Ageing Biology and Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Sarika Singh
- Department of Neurosciences and Ageing Biology and Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
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58
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Wrede AH, McNamara MC, Baldwin R, Luo J, Montazami R, Kanthasamy A, Hashemi NN. Characterization of Astrocytic Response after Experiencing Cavitation In Vitro. GLOBAL CHALLENGES (HOBOKEN, NJ) 2020; 4:1900014. [PMID: 32642072 PMCID: PMC7330500 DOI: 10.1002/gch2.201900014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/06/2020] [Indexed: 06/11/2023]
Abstract
When a traumatic brain injury (TBI) occurs, low-pressure regions inside the skull can cause vapor contents in the cerebral spinal fluid (CSF) to expand and collapse, a phenomenon known as cavitation. When these microbubbles (MBs) collapse, shock waves are radiated outward and are known to damage surrounding materials in other applications, like the steel foundation of boat propellers, so it is alarming to realize the damage that cavitation inflicts on vulnerable brain tissue. Using cell-laden microfibers, the longitudinal morphological response that mouse astrocytes have to surrounding cavitation in vitro is visually analyzed. Astrocytic damage is evident immediately after cavitation when compared to a control sample, as their processes retract. Forty-eight hours later, the astrocytes appeared to spread across the fibers, as normal. This study also analyzes the gene expression changes that occur post-cavitation via quantitative polymerase chain reaction (qPCR) methods. After cavitation a number of pro-inflammatory genes are upregulated, including TNFα, IL-1β, C1q, Serping1, NOS1, IL-6, and JMJD3. Taken together, these results confirm that surrounding cavitation is detrimental to astrocytic function, and yield opportunities to further the understanding of how protective headgear can minimize or eliminate the occurrence of cavitation.
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Affiliation(s)
- Alex H. Wrede
- Department of Mechanical EngineeringIowa State UniversityAmesIA50011USA
| | | | - Rodger Baldwin
- Department of Mechanical EngineeringIowa State UniversityAmesIA50011USA
| | - Jie Luo
- Department of Biomedical SciencesIowa State UniversityAmesIA50011USA
| | - Reza Montazami
- Department of Mechanical EngineeringIowa State UniversityAmesIA50011USA
| | | | - Nicole N. Hashemi
- Department of Mechanical EngineeringIowa State UniversityAmesIA50011USA
- Department of Biomedical SciencesIowa State UniversityAmesIA50011USA
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59
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Budge KM, Neal ML, Richardson JR, Safadi FF. Transgenic Overexpression of GPNMB Protects Against MPTP-Induced Neurodegeneration. Mol Neurobiol 2020; 57:2920-2933. [PMID: 32436108 DOI: 10.1007/s12035-020-01921-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 04/22/2020] [Indexed: 12/14/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disease highlighted by a marked loss of dopaminergic cell loss and motor disturbances. Currently, there are no drugs that slow the progression of the disease. A myriad of factors have been implicated in the pathogenesis and progression of PD including neuroinflammation. Although anti-inflammatory agents are being evaluated as potential disease-modifying therapies for PD, none has proven effective to date, suggesting that new and novel targets are needed. Glycoprotein nonmetastatic melanoma protein B (GPNMB) is a transmembrane glycoprotein that has recently been shown to reduce inflammation in astrocytes and to be increased in post-mortem PD brain samples. Here we show that transgenic overexpression of GPNMB protects against dopaminergic neurodegeneration in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropridine mouse model of Parkinson's disease. Furthermore, GPNMB overexpression reduces gliosis and prevented microglial morphological changes following MPTP treatment compared with wild-type MPTP-treated mice. Additionally, recombinant GPNMB attenuates LPS-induced inflammation in primary mouse microglia. These results suggest a neuroprotective and anti-inflammatory role for GPNMB and warrant further investigation for GPNMB as a novel therapy for PD.
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Affiliation(s)
- Kevin M Budge
- School of Biomedical Sciences, Kent State University, Kent, OH, USA.,Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Matthew L Neal
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.,Department of Environmental Health Sciences, Robert Stempel School of Public Health and Social Work, Florida International University, Miami, FL, USA
| | - Jason R Richardson
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA. .,Department of Environmental Health Sciences, Robert Stempel School of Public Health and Social Work, Florida International University, Miami, FL, USA.
| | - Fayez F Safadi
- School of Biomedical Sciences, Kent State University, Kent, OH, USA. .,Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, OH, USA. .,Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, OH, USA.
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Lipids Nutrients in Parkinson and Alzheimer's Diseases: Cell Death and Cytoprotection. Int J Mol Sci 2020; 21:ijms21072501. [PMID: 32260305 PMCID: PMC7178281 DOI: 10.3390/ijms21072501] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/26/2020] [Accepted: 04/01/2020] [Indexed: 12/11/2022] Open
Abstract
Neurodegenerative diseases, particularly Parkinson’s and Alzheimer’s, have common features: protein accumulation, cell death with mitochondrial involvement and oxidative stress. Patients are treated to cure the symptoms, but the treatments do not target the causes; so, the disease is not stopped. It is interesting to look at the side of nutrition which could help prevent the first signs of the disease or slow its progression in addition to existing therapeutic strategies. Lipids, whether in the form of vegetable or animal oils or in the form of fatty acids, could be incorporated into diets with the aim of preventing neurodegenerative diseases. These different lipids can inhibit the cytotoxicity induced during the pathology, whether at the level of mitochondria, oxidative stress or apoptosis and inflammation. The conclusions of the various studies cited are oriented towards the preventive use of oils or fatty acids. The future of these lipids that can be used in therapy/prevention will undoubtedly involve a better delivery to the body and to the brain by utilizing lipid encapsulation.
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61
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Mok SWF, Wong VKW, Lo HH, de Seabra Rodrigues Dias IR, Leung ELH, Law BYK, Liu L. Natural products-based polypharmacological modulation of the peripheral immune system for the treatment of neuropsychiatric disorders. Pharmacol Ther 2020; 208:107480. [DOI: 10.1016/j.pharmthera.2020.107480] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 12/31/2019] [Indexed: 02/06/2023]
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62
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Michalska P, Buendia I, Duarte P, FernandezMendivil C, Negredo P, Cuadrado A, López MG, Leon R. Melatonin-sulforaphane hybrid ITH12674 attenuates glial response in vivo by blocking LPS binding to MD2 and receptor oligomerization. Pharmacol Res 2020; 152:104597. [DOI: 10.1016/j.phrs.2019.104597] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/13/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022]
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Kustrimovic N, Marino F, Cosentino M. Peripheral Immunity, Immunoaging and Neuroinflammation in Parkinson's Disease. Curr Med Chem 2019; 26:3719-3753. [PMID: 30306855 DOI: 10.2174/0929867325666181009161048] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 06/26/2018] [Accepted: 09/12/2018] [Indexed: 12/20/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder among elderly population, characterized by the progressive degeneration of dopaminergic neurons in the midbrain. To date, exact cause remains unknown and the mechanism of neurons death uncertain. It is typically considered as a disease of central nervous system (CNS). Nevertheless, numerous evidence has been accumulated in several past years testifying undoubtedly about the principal role of neuroinflammation in progression of PD. Neuroinflammation is mainly associated with presence of activated microglia in brain and elevated levels of cytokine levels in CNS. Nevertheless, active participation of immune system as well has been noted, such as, elevated levels of cytokine levels in blood, the presence of auto antibodies, and the infiltration of T cell in CNS. Moreover, infiltration and reactivation of those T cells could exacerbate neuroinflammation to greater neurotoxic levels. Hence, peripheral inflammation is able to prime microglia into pro-inflammatory phenotype, which can trigger stronger response in CNS further perpetuating the on-going neurodegenerative process. In the present review, the interplay between neuroinflammation and the peripheral immune response in the pathobiology of PD will be discussed. First of all, an overview of regulation of microglial activation and neuroinflammation is summarized and discussed. Afterwards, we try to collectively analyze changes that occurs in peripheral immune system of PD patients, suggesting that these peripheral immune challenges can exacerbate the process of neuroinflammation and hence the symptoms of the disease. In the end, we summarize some of proposed immunotherapies for treatment of PD.
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Affiliation(s)
- Natasa Kustrimovic
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Franca Marino
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Marco Cosentino
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
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Methyl jasmonate abrogates rotenone-induced parkinsonian-like symptoms through inhibition of oxidative stress, release of pro-inflammatory cytokines, and down-regulation of immnopositive cells of NF-κB and α-synuclein expressions in mice. Neurotoxicology 2019; 74:172-183. [DOI: 10.1016/j.neuro.2019.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 06/12/2019] [Accepted: 07/15/2019] [Indexed: 01/07/2023]
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65
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Ahmadian E, Eftekhari A, Samiei M, Maleki Dizaj S, Vinken M. The role and therapeutic potential of connexins, pannexins and their channels in Parkinson's disease. Cell Signal 2019; 58:111-118. [DOI: 10.1016/j.cellsig.2019.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/10/2019] [Accepted: 03/10/2019] [Indexed: 02/07/2023]
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Titze-de-Almeida R, Titze-de-Almeida SS, Ferreira NR, Fontanari C, Faccioli LH, Del Bel E. Suppressing nNOS Enzyme by Small-Interfering RNAs Protects SH-SY5Y Cells and Nigral Dopaminergic Neurons from 6-OHDA Injury. Neurotox Res 2019; 36:117-131. [PMID: 31041676 DOI: 10.1007/s12640-019-00043-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/27/2019] [Accepted: 04/04/2019] [Indexed: 01/11/2023]
Abstract
Nitric oxide (NO) has chemical properties that make it uniquely suitable as an intracellular and intercellular messenger. NO is produced by the activity of the enzyme nitric oxide synthases (NOS). There is substantial and mounting evidence that slight abnormalities of NO may underlie a wide range of neurodegenerative disorders. NO participates of the oxidative stress and inflammatory processes that contribute to the progressive dopaminergic loss in Parkinson's disease (PD). The present study aimed to evaluate in vitro and in vivo the effects of neuronal NOS-targeted siRNAs on the injury caused in dopaminergic neurons by the toxin 6-hidroxydopamine (6-OHDA). First, we confirmed (immunohistochemistry and Western blotting) that SH-SY5Y cell lineage expresses the dopaminergic marker tyrosine hydroxylase (TH) and the protein under analysis, neuronal NOS (nNOS). We designed four siRNAs by using the BIOPREDsi algorithm choosing the one providing the highest knockdown of nNOS mRNA in SH-SY5Y cells, as determined by qPCR. siRNA 4400 carried by liposomes was internalized into cells, caused a concentration-dependent knockdown on nNOS, and reduced the toxicity induced by 6-OHDA (p < 0.05). Regarding in vivo action in the dopamine-depleted animals, intra-striatal injection of siRNA 4400 at 4 days prior 6-OHDA produced a decrease in the rotational behavior induced by apomorphine. Finally, siRNA 4400 mitigated the loss of TH(+) cells in substantia nigra dorsal and ventral part. In conclusion, the suppression of nNOS enzyme by targeted siRNAs modified the progressive death of dopaminergic cells induced by 6-OHDA and merits further pre-clinical investigations as a neuroprotective approach for PD.
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Affiliation(s)
- Ricardo Titze-de-Almeida
- Technology for Gene Therapy Laboratory, Central Institute of Sciences, University of Brasília-FAV, Brasília, DF, 70910-900, Brazil
| | - Simoneide S Titze-de-Almeida
- Technology for Gene Therapy Laboratory, Central Institute of Sciences, University of Brasília-FAV, Brasília, DF, 70910-900, Brazil
| | - Nadia Rubia Ferreira
- Department of Basic and Oral Biology, Dental School, University of São Paulo (USP), Ribeirão Preto, SP, 14040-904, Brazil
| | - Caroline Fontanari
- Department of Clinical Analyses, Toxicology and Bromatology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-903, Brazil
| | - Lúcia Helena Faccioli
- Department of Clinical Analyses, Toxicology and Bromatology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, 14040-903, Brazil
| | - Elaine Del Bel
- Department of Basic and Oral Biology, Dental School, University of São Paulo (USP), Ribeirão Preto, SP, 14040-904, Brazil.
- Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo (USP), São Paulo, SP, Brazil.
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Oxidative Stress: A Key Modulator in Neurodegenerative Diseases. Molecules 2019; 24:molecules24081583. [PMID: 31013638 PMCID: PMC6514564 DOI: 10.3390/molecules24081583] [Citation(s) in RCA: 1062] [Impact Index Per Article: 212.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/02/2019] [Accepted: 04/16/2019] [Indexed: 01/07/2023] Open
Abstract
Oxidative stress is proposed as a regulatory element in ageing and various neurological disorders. The excess of oxidants causes a reduction of antioxidants, which in turn produce an oxidation-reduction imbalance in organisms. Paucity of the antioxidant system generates oxidative-stress, characterized by elevated levels of reactive species (oxygen, hydroxyl free radical, and so on). Mitochondria play a key role in ATP supply to cells via oxidative phosphorylation, as well as synthesis of essential biological molecules. Various redox reactions catalyzed by enzymes take place in the oxidative phosphorylation process. An inefficient oxidative phosphorylation may generate reactive oxygen species (ROS), leading to mitochondrial dysfunction. Mitochondrial redox metabolism, phospholipid metabolism, and proteolytic pathways are found to be the major and potential source of free radicals. A lower concentration of ROS is essential for normal cellular signaling, whereas the higher concentration and long-time exposure of ROS cause damage to cellular macromolecules such as DNA, lipids and proteins, ultimately resulting in necrosis and apoptotic cell death. Normal and proper functioning of the central nervous system (CNS) is entirely dependent on the chemical integrity of brain. It is well established that the brain consumes a large amount of oxygen and is highly rich in lipid content, becoming prone to oxidative stress. A high consumption of oxygen leads to excessive production of ROS. Apart from this, the neuronal membranes are found to be rich in polyunsaturated fatty acids, which are highly susceptible to ROS. Various neurodegenerative diseases such as Parkinson's disease (PD), Alzheimer's disease (AD), Huntington's disease (HD), and amyotrophic lateral sclerosis (ALS), among others, can be the result of biochemical alteration (due to oxidative stress) in bimolecular components. There is a need to understand the processes and role of oxidative stress in neurodegenerative diseases. This review is an effort towards improving our understanding of the pivotal role played by OS in neurodegenerative disorders.
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Garretti F, Agalliu D, Lindestam Arlehamn CS, Sette A, Sulzer D. Autoimmunity in Parkinson's Disease: The Role of α-Synuclein-Specific T Cells. Front Immunol 2019; 10:303. [PMID: 30858851 PMCID: PMC6397885 DOI: 10.3389/fimmu.2019.00303] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/06/2019] [Indexed: 12/23/2022] Open
Abstract
Evidence from a variety of studies implicates a role for the adaptive immune system in Parkinson's disease (PD). Similar to multiple sclerosis (MS) patients who display a high number of T cells in the brain attacking oligodendrocytes, PD patients show higher numbers of T cells in the ventral midbrain than healthy, age-matched controls. Mouse models of the disease also show the presence of T cells in the brain. The role of these infiltrating T cells in the propagation of disease is controversial; however, recent studies indicate that they may be autoreactive in nature, recognizing disease-altered self-proteins as foreign antigens. T cells of PD patients can generate an autoimmune response to α-synuclein, a protein that is aggregated in PD. α-Synuclein and other proteins are post-translationally modified in an environment in which protein processing is altered, possibly leading to the generation of neo-epitopes, or self-peptides that have not been identified by the host immune system as non-foreign. Infiltrating T cells may also be responding to such modified proteins. Genome-wide association studies (GWAS) have shown associations of PD with haplotypes of major histocompatibility complex (MHC) class II genes, and a polymorphism in a non-coding region that may increase MHC class II in PD patients. We speculate that the inflammation observed in PD may play both pathogenic and protective roles. Future studies on the adaptive immune system in neurodegenerative disorders may elucidate steps in disease pathogenesis and assist with the development of both biomarkers and treatments.
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Affiliation(s)
- Francesca Garretti
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
| | - Dritan Agalliu
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States.,Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States
| | | | - Alessandro Sette
- Division of Vaccine Discovery, La Jolla Institute for Immunology, La Jolla, CA, United States.,Department of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - David Sulzer
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States.,Department of Pharmacology, Columbia University Irving Medical Center, New York, NY, United States.,Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, United States
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69
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Jiao Z, Zhang W, Chen C, Zhu X, Chen X, Zhou M, Peng G, Liu H, Qiu J, Lin Y, Huang S, Mo M, Yang X, Qu S, Xu P. Gene Dysfunction Mediates Immune Response to Dopaminergic Degeneration in Parkinson's Disease. ACS Chem Neurosci 2019; 10:803-811. [PMID: 30289236 DOI: 10.1021/acschemneuro.8b00373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Many publications reported that genetic dysfunction mediates abnormal immune responses in the brain, which is important for the development of neurodegenerative diseases, especially for Parkinson's disease (PD). This immune disorder results in subsequent inflammatory reaction, which stimulates microglia or other immune cells to secrete cytokines and chemokines and disturbs the proportion of peripheral blood lymphocyte subsets contributing to dopaminergic (DA) neuron apoptosis. Furthermore, the abnormal immune related signal pathways caused by genetic variants promote chronic inflammation destroying the blood-brain barrier, which allows infiltration of different molecules and blood cells into the central nervous system (CNS) exerting toxicity on DA neurons. As a result, the inflammatory reaction in the CNS accelerates the progression of Parkinson's disease and promotes α-synuclein aggregation and diffusion among DA neurons in the procession of Parkinson's disease. Thus, for disease evaluation, the genetic mediated abnormal immune response in PD may be assessed based on the multiple immune molecules and inflammatory factors, as well as the ratio of lymphocyte subsets from PD patient's peripheral blood as potential biomarkers.
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Affiliation(s)
- Zhigang Jiao
- Central Laboratory, Shunde Hospital, Southern Medical University, Foshan 528300, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Foshan 528300, China
| | - Wenlong Zhang
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Chaojun Chen
- Department of Neurology, Guangzhou Chinese Medical Integrated Hospital (Huadu), Guangdong 510800, China
| | - Xiaoqin Zhu
- Guangzhou Medical University, Guangzhou 511436, China
| | - Xiang Chen
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Miaomiao Zhou
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Guoyou Peng
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Hanqun Liu
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Jiewen Qiu
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yuwan Lin
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Shuxuan Huang
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Mingshu Mo
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Xinling Yang
- Department of Neurology, the Third Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Shaogang Qu
- Central Laboratory, Shunde Hospital, Southern Medical University, Foshan 528300, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Foshan 528300, China
| | - Pingyi Xu
- Department of Neurology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
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70
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Tansey MG, Romero-Ramos M. Immune system responses in Parkinson's disease: Early and dynamic. Eur J Neurosci 2019; 49:364-383. [PMID: 30474172 PMCID: PMC6391192 DOI: 10.1111/ejn.14290] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/08/2018] [Accepted: 11/13/2018] [Indexed: 12/12/2022]
Abstract
The neuropathological hallmarks of Parkinson's disease (PD) are the degeneration and death of dopamine-producing neurons in the ventral midbrain, the widespread intraneuronal aggregation of alpha-synuclein (α) in Lewy bodies and neurites, neuroinflammation, and gliosis. Signs of microglia activation in the PD brain postmortem as well as during disease development revealed by neuroimaging, implicate immune responses in the pathophysiology of the disease. Intensive research during the last two decades has advanced our understanding of the role of these responses in the disease process, yet many questions remain unanswered. A transformative finding in the field has been the confirmation that in vivo microglia are able to respond directly to pathological a-syn aggregates but also to neuronal dysfunction due to intraneuronal a-syn toxicity well in advance of neuronal death. In addition, clinical research and disease models have revealed the involvement of both the innate and adaptive immune systems. Indeed, the data suggest that PD leads not only to a microglia response, but also to a cellular and humoral peripheral immune response. Together, these findings compel us to consider a more holistic view of the immunological processes associated with the disease. Central and peripheral immune responses aimed at maintaining neuronal health will ultimately have consequences on neuronal survival. We will review here the most significant findings that have contributed to the current understanding of the immune response in PD, which is proposed to occur early, involve peripheral and brain immune cells, evolve as neuronal dysfunction progresses, and is likely to influence disease progression.
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Affiliation(s)
- Malú G Tansey
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | - Marina Romero-Ramos
- Department of Biomedicine, Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, & AU IDEAS center NEURODIN, Aarhus University, Aarhus C, Denmark
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71
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Novel Immunotherapeutic Approaches to Target Alpha-Synuclein and Related Neuroinflammation in Parkinson's Disease. Cells 2019; 8:cells8020105. [PMID: 30708997 PMCID: PMC6406239 DOI: 10.3390/cells8020105] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/23/2019] [Accepted: 01/29/2019] [Indexed: 12/12/2022] Open
Abstract
The etiology of Parkinson’s disease (PD) is significantly influenced by disease-causing changes in the protein alpha-Synuclein (aSyn). It can trigger and promote intracellular stress and thereby impair the function of dopaminergic neurons. However, these damage mechanisms do not only extend to neuronal cells, but also affect most glial cell populations, such as astroglia and microglia, but also T lymphocytes, which can no longer maintain the homeostatic CNS milieu because they produce neuroinflammatory responses to aSyn pathology. Through precise neuropathological examination, molecular characterization of biomaterials, and the use of PET technology, it has been clearly demonstrated that neuroinflammation is involved in human PD. In this review, we provide an in-depth overview of the pathomechanisms that aSyn elicits in models of disease and focus on the affected glial cell and lymphocyte populations and their interaction with pathogenic aSyn species. The interplay between aSyn and glial cells is analyzed both in the basic research setting and in the context of human neuropathology. Ultimately, a strong rationale builds up to therapeutically reduce the burden of pathological aSyn in the CNS. The current antibody-based approaches to lower the amount of aSyn and thereby alleviate neuroinflammatory responses is finally discussed as novel therapeutic strategies for PD.
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Abstract
Microglia are the most abundant immune cells in the central nervous system (CNS), where they interact with neurons and exhibit a wide array of functions in physiological and pathological conditions. Physiologically, microglia mediate synaptic pruning and remodeling crucial for neural circuits and brain connectivity. In pathological conditions such as neurodegeneration in the Parkinson's disease (PD), microglia are activated, migrated to the injury site, and prone to engulf debris, sense pathology, and secrete possible pro- and anti-inflammatory factors. Microglia mediate responses such as inflammation and phagocytosis associated with neurodegeneration and are pivotal players in exacerbating or relieving disease progression. This chapter provides an overview on microglial function in the neurodegenerative disease-Parkinson's disease (PD). An overview on the pathology of PD will first be given, followed by discussion on receptors and signaling pathways involved in microglia-mediated inflammation and phagocytosis. Mechanism of how microglia contribute to PD by inflammation, phagocytosis of α-Synuclein (α-Syn), and interaction with PD genes will also be discussed.
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Affiliation(s)
- Margaret S Ho
- School of Life Science and Technology, ShanghaiTech University, #B416, L Building, #230 Haike Road, Pudong New District, Shanghai, 201210, China.
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73
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Bachiller S, Jiménez-Ferrer I, Paulus A, Yang Y, Swanberg M, Deierborg T, Boza-Serrano A. Microglia in Neurological Diseases: A Road Map to Brain-Disease Dependent-Inflammatory Response. Front Cell Neurosci 2018; 12:488. [PMID: 30618635 PMCID: PMC6305407 DOI: 10.3389/fncel.2018.00488] [Citation(s) in RCA: 428] [Impact Index Per Article: 71.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/29/2018] [Indexed: 12/12/2022] Open
Abstract
Microglia represent a specialized population of macrophages-like cells in the central nervous system (CNS) considered immune sentinels that are capable of orchestrating a potent inflammatory response. Microglia are also involved in synaptic organization, trophic neuronal support during development, phagocytosis of apoptotic cells in the developing brain, myelin turnover, control of neuronal excitability, phagocytic debris removal as well as brain protection and repair. Microglial response is pathology dependent and affects to immune, metabolic. In this review, we will shed light on microglial activation depending on the disease context and the influence of factors such as aging, environment or cell-to-cell interaction.
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Affiliation(s)
- Sara Bachiller
- Experimental Neuroinflammation Laboratory, Lund University, Lund, Sweden
| | - Itzia Jiménez-Ferrer
- Translational Neurogenetics Unit, Wallenberg Neuroscience Center, Lund University, Lund, Sweden
| | - Agnes Paulus
- Experimental Neuroinflammation Laboratory, Lund University, Lund, Sweden
| | - Yiyi Yang
- Experimental Neuroinflammation Laboratory, Lund University, Lund, Sweden
| | - Maria Swanberg
- Translational Neurogenetics Unit, Wallenberg Neuroscience Center, Lund University, Lund, Sweden
| | - Tomas Deierborg
- Experimental Neuroinflammation Laboratory, Lund University, Lund, Sweden
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74
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Tyebji S, Seizova S, Hannan AJ, Tonkin CJ. Toxoplasmosis: A pathway to neuropsychiatric disorders. Neurosci Biobehav Rev 2018; 96:72-92. [PMID: 30476506 DOI: 10.1016/j.neubiorev.2018.11.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 10/23/2018] [Accepted: 11/22/2018] [Indexed: 12/24/2022]
Abstract
Toxoplasma gondii is an obligate intracellular parasite that resides, in a latent form, in the human central nervous system. Infection with Toxoplasma drastically alters the behaviour of rodents and is associated with the incidence of specific neuropsychiatric conditions in humans. But the question remains: how does this pervasive human pathogen alter behaviour of the mammalian host? This fundamental question is receiving increasing attention as it has far reaching public health implications for a parasite that is very common in human populations. Our current understanding centres on neuronal changes that are elicited directly by this intracellular parasite versus indirect changes that occur due to activation of the immune system within the CNS, or a combination of both. In this review, we explore the interactions between Toxoplasma and its host, the proposed mechanisms and consequences on neuronal function and mental health, and discuss Toxoplasma infection as a public health issue.
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Affiliation(s)
- Shiraz Tyebji
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, 3052, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, 3052, Australia; Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, 3052, Victoria, Australia.
| | - Simona Seizova
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, 3052, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, 3052, Australia.
| | - Anthony J Hannan
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, 3052, Victoria, Australia; Department of Anatomy and Neuroscience, University of Melbourne, Parkville, 3052, Victoria, Australia.
| | - Christopher J Tonkin
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, 3052, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, 3052, Australia.
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75
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Erekat N, Al-Jarrah MD. Interleukin-1 Beta and Tumor Necrosis Factor Alpha Upregulation and Nuclear Factor Kappa B Activation in Skeletal Muscle from a Mouse Model of Chronic/Progressive Parkinson Disease. Med Sci Monit 2018; 24:7524-7531. [PMID: 30344306 PMCID: PMC6402272 DOI: 10.12659/msm.909032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Skeletal muscle atrophy has been reported in patients with Parkinson disease (PD). The purpose of this study was to examine the potential implication of interleukin 1 beta (IL-1β), tumor necrosis factor alpha (TNFα), and nuclear factor kappa B (NF kappa B) in skeletal muscle atrophy following PD induction. MATERIAL AND METHODS Chronic Parkinsonism was induced in 10 albino mice by MPTP/probenecid treatment, while 10 other albino mice remained without treatment and were subsequently used as controls. Gastrocnemius muscles were examined for the expression of IL-1β and TNF-α, as well as the nuclear localization of NF kappa B, indicative of its activation, using immunohistochemistry in the 2 different groups. RESULTS IL-1β and TNF-α expression and NF kappa B nuclear localization were significantly higher in the PD skeletal muscle compared with those in the controls (P value <0.01). CONCLUSIONS The present data are indicative of an association of PD with IL-1β and TNF-α upregulation and NF kappa B activation in gastrocnemius muscles, potentially promoting the atrophy frequently observed in PD.
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Affiliation(s)
- Nour Erekat
- Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Muhammed D Al-Jarrah
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
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76
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Non-cell-autonomous actions of α-synuclein: Implications in glial synucleinopathies. Prog Neurobiol 2018; 169:158-171. [DOI: 10.1016/j.pneurobio.2018.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 07/24/2017] [Accepted: 06/30/2018] [Indexed: 01/11/2023]
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77
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Yao K, Zhao YF. Aging modulates microglia phenotypes in neuroinflammation of MPTP-PD mice. Exp Gerontol 2018; 111:86-93. [DOI: 10.1016/j.exger.2018.07.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 06/14/2018] [Accepted: 07/10/2018] [Indexed: 01/25/2023]
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78
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Ferreira SA, Romero-Ramos M. Microglia Response During Parkinson's Disease: Alpha-Synuclein Intervention. Front Cell Neurosci 2018; 12:247. [PMID: 30127724 PMCID: PMC6087878 DOI: 10.3389/fncel.2018.00247] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/19/2018] [Indexed: 12/19/2022] Open
Abstract
The discovery of the central role played by the protein alpha-synuclein in Parkinson's disease and other Lewy body brain disorders has had a great relevance in the understanding of the degenerative process occurring in these diseases. In addition, during the last two decades, the evidence suggesting an immune response in Parkinson's disease patients have multiplied. The role of the immune system in the disease is supported by data from genetic studies and patients, as well as from laboratory animal models and cell cultures. In the immune response, the microglia, the immune cell of the brain, will have a determinant role. Interestingly, alpha-synuclein is suggested to have a central function not only in the neuronal events occurring in Parkinson's disease, but also in the immune response during the disease. Numerous studies have shown that alpha-synuclein can act directly on immune cells, such as microglia in brain, initiating a sterile response that will have consequences for the neuronal health and that could also translate in a peripheral immune response. In parallel, microglia should also act clearing alpha-synuclein thus avoiding an overabundance of the protein, which is crucial to the disease progression. Therefore, the microglia response in each moment will have significant consequences for the neuronal fate. Here we will review the literature addressing the microglia response in Parkinson's disease with an especial focus on the protein alpha-synuclein. We will also reflect upon the limitations of the studies carried so far and in the therapeutic possibilities opened based on these recent findings.
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Affiliation(s)
- Sara A Ferreira
- AU IDEAS center NEURODIN, Aarhus University, Aarhus, Denmark.,Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Marina Romero-Ramos
- AU IDEAS center NEURODIN, Aarhus University, Aarhus, Denmark.,Danish Research Institute of Translational Neuroscience - DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
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79
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Nitric oxide alterations in cardiovascular system of rats with Parkinsonism induced by 6-OHDA and submitted to previous exercise. Life Sci 2018; 204:78-86. [DOI: 10.1016/j.lfs.2018.05.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/26/2018] [Accepted: 05/06/2018] [Indexed: 01/10/2023]
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80
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Carroll CB, Wyse RKH. Simvastatin as a Potential Disease-Modifying Therapy for Patients with Parkinson's Disease: Rationale for Clinical Trial, and Current Progress. JOURNAL OF PARKINSONS DISEASE 2018; 7:545-568. [PMID: 29036837 PMCID: PMC5676977 DOI: 10.3233/jpd-171203] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Many now believe the holy grail for the next stage of therapeutic advance surrounds the development of disease-modifying approaches aimed at intercepting the year-on-year neurodegenerative decline experienced by most patients with Parkinson’s disease (PD). Based on recommendations of an international committee of experts who are currently bringing multiple, potentially disease-modifying, PD therapeutics into long-term neuroprotective PD trials, a clinical trial involving 198 patients is underway to determine whether Simvastatin provides protection against chronic neurodegeneration. Statins are widely used to reduce cardiovascular risk, and act as competitive inhibitors of HMG-CoA reductase. It is also known that statins serve as ligands for PPARα, a known arbiter for mitochondrial size and number. Statins possess multiple cholesterol-independent biochemical mechanisms of action, many of which offer neuroprotective potential (suppression of proinflammatory molecules & microglial activation, stimulation of endothelial nitric oxide synthase, inhibition of oxidative stress, attenuation of α-synuclein aggregation, modulation of adaptive immunity, and increased expression of neurotrophic factors). We describe the biochemical, physiological and pharmaceutical credentials that continue to underpin the rationale for taking Simvastatin into a disease-modifying trial in PD patients. While unrelated to the Simvastatin trial (because this conducted in patients who already have PD), we discuss conflicting epidemiological studies which variously suggest that statin use for cardiovascular prophylaxis may increase or decrease risk of developing PD. Finally, since so few disease-modifying PD trials have ever been launched (compared to those of symptomatic therapies), we discuss the rationale of the trial structure we have adopted, decisions made, and lessons learnt so far.
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Affiliation(s)
- Camille B Carroll
- Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth, UK
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81
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Saiki P, Kawano Y, Van Griensven LJLD, Miyazaki K. The anti-inflammatory effect of Agaricus brasiliensis is partly due to its linoleic acid content. Food Funct 2018; 8:4150-4158. [PMID: 29022634 DOI: 10.1039/c7fo01172e] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For hundreds of years mushrooms have been used as functional food for health. The basidiomycete Agaricus brasiliensis (A. brasiliensis) is famous for the medicinal properties of its beta glucans and of its antioxidants. Most researchers have studied polysaccharides from A. brasiliensis for their anti-inflammatory activity. However, active compounds from this mushroom have not yet been studied for the inactivation of NO inhibitory activity. The present study aimed to find the active compounds from A. brasiliensis for their NO inhibitory activity related inflammatory activity. This study found that linoleic acid isolated from A. brasiliensis inhibited NO production and suppressed the expression of pro-inflammatory cytokines including TNF-α, IL-6, IL-1β, and NOS2 in RAW 264.7 cells. Linoleic acid also suppressed the expression of NF-κB subunit p50 and restored PPARα. This leads to the conclusion that linoleic acid from A. brasiliensis could reduce NO production and inflammatory activity in RAW 264.7 cells by the inhibition of p50 and via the activation of PPARα. This study suggests that linoleic acid present in A. brasiliensis could play a role in the prevention of inflammatory diseases for which this edible mushroom is already known.
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Affiliation(s)
- Papawee Saiki
- Biomedical Research Institute, National institute of Advance Industrial Science and Technology, Tsukuba, Ibaraki, Japan.
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82
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Nitric Oxide and Mitochondrial Function in Neurological Diseases. Neuroscience 2018; 376:48-71. [DOI: 10.1016/j.neuroscience.2018.02.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/20/2018] [Accepted: 02/09/2018] [Indexed: 12/17/2022]
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83
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Dallé E, Mabandla MV. Early Life Stress, Depression And Parkinson's Disease: A New Approach. Mol Brain 2018; 11:18. [PMID: 29551090 PMCID: PMC5858138 DOI: 10.1186/s13041-018-0356-9] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 02/27/2018] [Indexed: 12/20/2022] Open
Abstract
This review aims to shed light on the relationship that involves exposure to early life stress, depression and Parkinson's disease (PD). A systematic literature search was conducted in Pubmed, MEDLINE, EBSCOHost and Google Scholar and relevant data were submitted to a meta-analysis . Early life stress may contribute to the development of depression and patients with depression are at risk of developing PD later in life. Depression is a common non-motor symptom preceding motor symptoms in PD. Stimulation of regions contiguous to the substantia nigra as well as dopamine (DA) agonists have been shown to be able to attenuate depression. Therefore, since PD causes depletion of dopaminergic neurons in the substantia nigra, depression, rather than being just a simple mood disorder, may be part of the pathophysiological process that leads to PD. It is plausible that the mesocortical and mesolimbic dopaminergic pathways that mediate mood, emotion, and/or cognitive function may also play a key role in depression associated with PD. Here, we propose that a medication designed to address a deficiency in serotonin is more likely to influence motor symptoms of PD associated with depression. This review highlights the effects of an antidepressant, Fluvoxamine maleate, in an animal model that combines depressive-like symptoms and Parkinsonism.
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Affiliation(s)
- Ernest Dallé
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, 4000 South Africa
| | - Musa V. Mabandla
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, 4000 South Africa
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84
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Frøyset AK, Edson AJ, Gharbi N, Khan EA, Dondorp D, Bai Q, Tiraboschi E, Suster ML, Connolly JB, Burton EA, Fladmark KE. Astroglial DJ-1 over-expression up-regulates proteins involved in redox regulation and is neuroprotective in vivo. Redox Biol 2018. [PMID: 29525604 PMCID: PMC5854894 DOI: 10.1016/j.redox.2018.02.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
DJ-1, a Parkinson's disease-associated protein, is strongly up-regulated in reactive astrocytes in Parkinson's disease. This is proposed to represent a neuronal protective response, although the mechanism has not yet been identified. We have generated a transgenic zebrafish line with increased astroglial DJ-1 expression driven by regulatory elements from the zebrafish GFAP gene. Larvae from this transgenic line are protected from oxidative stress-induced injuries as caused by MPP+, a mitochondrial complex I inhibitor shown to induce dopaminergic cells death. In a global label-free proteomics analysis of wild type and transgenic larvae exposed to MPP+, 3418 proteins were identified, in which 366 proteins were differentially regulated. In particular, we identified enzymes belonging to primary metabolism to be among proteins affected by MPP+ in wild type animals, but not affected in the transgenic line. Moreover, by performing protein profiling on isolated astrocytes we showed that an increase in astrocytic DJ-1 expression up-regulated a large group of proteins associated with redox regulation, inflammation and mitochondrial respiration. The majority of these proteins have also been shown to be regulated by Nrf2. These findings provide a mechanistic insight into the protective role of astroglial up-regulation of DJ-1 and show that our transgenic zebrafish line with astrocytic DJ-1 over-expression can serve as a useful animal model to understand astrocyte-regulated neuroprotection associated with oxidative stress-related neurodegenerative disease. Increases astrocytic proteins linked to oxidative stress regulation & inflammation. Protects from MPP+-induced changes in central metabolism and protein nitrosylation. Protects from MPP+-induced tyrosine hydroxylase loss and motor deficits.
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Affiliation(s)
- Ann Kristin Frøyset
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway
| | - Amanda J Edson
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway
| | - Naouel Gharbi
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway
| | - Essa A Khan
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway
| | - Daniel Dondorp
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway
| | - Qing Bai
- Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ettore Tiraboschi
- Neural Circuits and Behaviour Group, Uni Research AS, Bergen N-5020, Norway
| | | | | | - Edward A Burton
- Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kari E Fladmark
- Department of Biological Sciences, University of Bergen, Bergen N-5020, Norway.
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85
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Lim S, Chun Y, Lee JS, Lee SJ. Neuroinflammation in Synucleinopathies. Brain Pathol 2018; 26:404-9. [PMID: 26940152 DOI: 10.1111/bpa.12371] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/08/2016] [Accepted: 02/24/2016] [Indexed: 12/25/2022] Open
Abstract
The causes of most neurodegenerative diseases are attributed to multiple genetic and environmental factors interacting with one another. Above all, inflammation in the nervous system has been implicated in many neurodegenerative diseases. Still, the roles of neuroinflammation in disease mechanisms and the triggers of inflammatory responses in disease-inflicted brain tissues seem to remain unclear. This review will examine previous studies that had been done from genetic, pathological and epidemiological perspectives. These studies assess the involvement of neuroinflammation in synucleinopathies, a group of neurodegenerative diseases that are characterized by deposition of α-synuclein aggregates such as Parkinson's disease, dementia with Lewy bodies and multiple system atrophy. The review will also discuss the role of α-synuclein aggregates in triggering inflammatory responses from glial cells. It is expected that a precise assessment of the roles and mechanisms of neuroinflammation in neurodegenerative diseases will pave the way for the development of disease-modifying drugs.
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Affiliation(s)
- Somin Lim
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Yewon Chun
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Jun Sung Lee
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Seung-Jae Lee
- Department of Biomedical Sciences, Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, 03080, Korea
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86
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Koriyama Y, Furukawa A. S-Nitrosylation Regulates Cell Survival and Death in the Central Nervous System. Neurochem Res 2018; 43:50-58. [DOI: 10.1007/s11064-017-2303-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/25/2017] [Accepted: 05/10/2017] [Indexed: 02/02/2023]
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87
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Terron A, Bal-Price A, Paini A, Monnet-Tschudi F, Bennekou SH, Leist M, Schildknecht S. An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition. Arch Toxicol 2018; 92:41-82. [PMID: 29209747 PMCID: PMC5773657 DOI: 10.1007/s00204-017-2133-4] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/22/2017] [Indexed: 12/21/2022]
Abstract
Epidemiological studies have observed an association between pesticide exposure and the development of Parkinson's disease, but have not established causality. The concept of an adverse outcome pathway (AOP) has been developed as a framework for the organization of available information linking the modulation of a molecular target [molecular initiating event (MIE)], via a sequence of essential biological key events (KEs), with an adverse outcome (AO). Here, we present an AOP covering the toxicological pathways that link the binding of an inhibitor to mitochondrial complex I (i.e., the MIE) with the onset of parkinsonian motor deficits (i.e., the AO). This AOP was developed according to the Organisation for Economic Co-operation and Development guidelines and uploaded to the AOP database. The KEs linking complex I inhibition to parkinsonian motor deficits are mitochondrial dysfunction, impaired proteostasis, neuroinflammation, and the degeneration of dopaminergic neurons of the substantia nigra. These KEs, by convention, were linearly organized. However, there was also evidence of additional feed-forward connections and shortcuts between the KEs, possibly depending on the intensity of the insult and the model system applied. The present AOP demonstrates mechanistic plausibility for epidemiological observations on a relationship between pesticide exposure and an elevated risk for Parkinson's disease development.
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Affiliation(s)
| | | | - Alicia Paini
- European Commission Joint Research Centre, Ispra, Italy
| | | | | | - Marcel Leist
- In Vitro Toxicology and Biomedicine, Department of Biology, University of Konstanz, Universitätsstr. 10, PO Box M657, 78457, Konstanz, Germany
| | - Stefan Schildknecht
- In Vitro Toxicology and Biomedicine, Department of Biology, University of Konstanz, Universitätsstr. 10, PO Box M657, 78457, Konstanz, Germany.
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88
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Zhang X, Wang B, Xiao Y, Wang C, He L. Targetable, two-photon fluorescent probes for local nitric oxide capture in the plasma membranes of live cells and brain tissues. Analyst 2018; 143:4180-4188. [DOI: 10.1039/c8an00905h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A plasma membrane-targetable two-photon fluorescent probe for capturing nitric oxide in cells and brain tissues.
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Affiliation(s)
- Xinfu Zhang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Benlei Wang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Yi Xiao
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Chao Wang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Ling He
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
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89
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7-Fluoro-1,3-diphenylisoquinoline reverses motor and non-motor symptoms induced by MPTP in mice: Role of striatal neuroinflammation. Eur J Pharmacol 2017; 819:129-135. [PMID: 29217173 DOI: 10.1016/j.ejphar.2017.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 11/23/2017] [Accepted: 12/01/2017] [Indexed: 02/04/2023]
Abstract
Parkinson's disease (PD) is a dopaminergic neurodegenerative disorder, which presents motor and non-motor symptoms. 7-Fluoro-1,3-diphenylisoquinoline (FDPI) is an isoquinoline compound with antioxidant and antidepressant properties. This study investigated whether FDPI reverses motor and non-motor symptoms in an acute mouse model of PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). It was also assessed the anti-inflammatory mechanisms in FDPI pharmacological action. C57Bl/6 male adult mice received four MPTP (20mg/kg, intraperitoneal) or saline (vehicle) injections to induce an acute PD model. FDPI (10mg/kg, intragastric) was daily administered to mice from the 2nd to 9th day after the induction and mice performed the behavioral tests on the 8th and 9th days. Striatum samples were collected for biochemical and molecular analyses. The results of the rotarod and challenging beam tests demonstrated that the administration of FDPI attenuated the impairments in balance and coordination of mice induced by MPTP. The FDPI reversed the short-term memory deficit and depressive-like behavior induced by MPTP in mice. FDPI attenuated the reduction in the striatal tyrosine hydroxylase levels, and it reversed the increase in the cyclooxygenase-2 levels and myeloperoxidase activity caused by MPTP in mice. Therefore, FDPI reversed motor and non-motor symptoms induced by an acute PD model and its restorative effects seem to be mediated by an anti-inflammatory action associated with a modulation of the striatal cyclooxygenase-2 levels and myeloperoxidase activity.
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90
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Joshi N, Singh S. Updates on immunity and inflammation in Parkinson disease pathology. J Neurosci Res 2017; 96:379-390. [DOI: 10.1002/jnr.24185] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/05/2017] [Accepted: 09/13/2017] [Indexed: 01/13/2023]
Affiliation(s)
- Neeraj Joshi
- Department of Biochemistry and Biophysics; Helen Diller Comprehensive Cancer Center; San Francisco California
| | - Sarika Singh
- Toxicology and Experimental Medicine Division, CSIR-Central Drug Research Institute; Lucknow India
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91
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Matsumoto J, Stewart T, Sheng L, Li N, Bullock K, Song N, Shi M, Banks WA, Zhang J. Transmission of α-synuclein-containing erythrocyte-derived extracellular vesicles across the blood-brain barrier via adsorptive mediated transcytosis: another mechanism for initiation and progression of Parkinson's disease? Acta Neuropathol Commun 2017; 5:71. [PMID: 28903781 PMCID: PMC5598000 DOI: 10.1186/s40478-017-0470-4] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 08/24/2017] [Indexed: 02/07/2023] Open
Abstract
Parkinson’s disease (PD) pathophysiology develops in part from the formation, transmission, and aggregation of toxic species of the protein α-synuclein (α-syn). Recent evidence suggests that extracellular vesicles (EVs) may play a vital role in the transport of toxic α-syn between brain regions. Moreover, increasing evidence has highlighted the participation of peripheral molecules, particularly inflammatory species, which may influence or exacerbate the development of PD-related changes to the central nervous system (CNS), although detailed characterization of these species remains to be completed. Despite these findings, little attention has been devoted to erythrocytes, which contain α-syn concentrations ~1000-fold higher than the cerebrospinal fluid, as a source of potentially pathogenic α-syn. Here, we demonstrate that erythrocytes produce α-syn-rich EVs, which can cross the BBB, particularly under inflammatory conditions provoked by peripheral administration of lipopolysaccharide. This transport likely occurs via adsorptive-mediated transcytosis, with EVs that transit the BBB co-localizing with brain microglia. Examination of microglial reactivity upon exposure to α-syn-containing erythrocyte EVs in vitro and in vivo revealed that uptake provoked an increase in microglial inflammatory responses. EVs derived from the erythrocytes of PD patients elicited stronger responses than did those of control subjects, suggesting that inherent characteristics of EVs arising in the periphery might contribute to, or even initiate, CNS α-syn-related pathology. These results provide new insight into the mechanisms by which the brain and periphery communicate throughout the process of synucleinopathy pathogenesis.
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92
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Bulteau AL, Mena NP, Auchère F, Lee I, Prigent A, Lobsiger CS, Camadro JM, Hirsch EC. Dysfunction of mitochondrial Lon protease and identification of oxidized protein in mouse brain following exposure to MPTP: Implications for Parkinson disease. Free Radic Biol Med 2017; 108:236-246. [PMID: 28365360 DOI: 10.1016/j.freeradbiomed.2017.03.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/19/2017] [Accepted: 03/22/2017] [Indexed: 10/19/2022]
Abstract
Compelling evidence suggests that mitochondrial dysfunction leading to reactive oxygen species (ROS) production and protein oxidation could represent a critical event in the pathogenesis of Parkinson's disease (PD). Pioneering studies have shown that the mitochondrial matrix contains the Lon protease, which degrades oxidized, dysfunctional, and misfolded protein. Using the PD animal model of 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) intoxication in mice, we showed that Lon protease expression increased in the ventral mesencephalon of intoxicated animals, concomitantly with the appearance of oxidized proteins and dopaminergic cell loss. In addition, we report that Lon is inactivated by ROS. Moreover, proteomic experiments provide evidence of carbonylation in α-ketoglutarate dehydrogenase (KGDH), aconitase or subunits of respiratory chain complexes. Lon protease inactivation upon MPTP treatment in mice raises the possibility that Lon protease dysfunction is an early event in the pathogenesis of PD.
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Affiliation(s)
- Anne-Laure Bulteau
- INSERM, U1127, The Brain and Spinal Cord Institute (ICM), Hôpital de la Salpêtrière, 75013 Paris, France; CNRS, UMR 7225, Centre de Recherche en neurosciences, ICM, Thérapeutique expérimentale de la neurodégénérescence, Hôpital de la Salpêtrière, Paris, F-75005 Paris, France; Sorbonne Universités, Université Pierre et Marie Curie, 75005 Paris, France.
| | - Natalia P Mena
- INSERM, U1127, The Brain and Spinal Cord Institute (ICM), Hôpital de la Salpêtrière, 75013 Paris, France; CNRS, UMR 7225, Centre de Recherche en neurosciences, ICM, Thérapeutique expérimentale de la neurodégénérescence, Hôpital de la Salpêtrière, Paris, F-75005 Paris, France; Sorbonne Universités, Université Pierre et Marie Curie, 75005 Paris, France; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile; Millennium Institute of Cell Dynamics and Biotechnology, Santiago, Chile
| | - Françoise Auchère
- Laboratoire Mitochondries, Métaux et Stress Oxydatif, Département de Pathologie Moléculaire et Cellulaire, Institut Jacques Monod, Université Paris-Diderot/CNRS, Paris, France
| | - Irene Lee
- Case Western Reserve University Department of Chemistry, Cleveland, OH 44106, USA
| | - Annick Prigent
- INSERM, U1127, The Brain and Spinal Cord Institute (ICM), Hôpital de la Salpêtrière, 75013 Paris, France; CNRS, UMR 7225, Centre de Recherche en neurosciences, ICM, Thérapeutique expérimentale de la neurodégénérescence, Hôpital de la Salpêtrière, Paris, F-75005 Paris, France; Sorbonne Universités, Université Pierre et Marie Curie, 75005 Paris, France
| | - Christian S Lobsiger
- INSERM, U1127, The Brain and Spinal Cord Institute (ICM), Hôpital de la Salpêtrière, 75013 Paris, France; CNRS, UMR 7225, Centre de Recherche en neurosciences, ICM, Thérapeutique expérimentale de la neurodégénérescence, Hôpital de la Salpêtrière, Paris, F-75005 Paris, France; Sorbonne Universités, Université Pierre et Marie Curie, 75005 Paris, France
| | - Jean-Michel Camadro
- Laboratoire Mitochondries, Métaux et Stress Oxydatif, Département de Pathologie Moléculaire et Cellulaire, Institut Jacques Monod, Université Paris-Diderot/CNRS, Paris, France
| | - Etienne C Hirsch
- INSERM, U1127, The Brain and Spinal Cord Institute (ICM), Hôpital de la Salpêtrière, 75013 Paris, France; CNRS, UMR 7225, Centre de Recherche en neurosciences, ICM, Thérapeutique expérimentale de la neurodégénérescence, Hôpital de la Salpêtrière, Paris, F-75005 Paris, France; Sorbonne Universités, Université Pierre et Marie Curie, 75005 Paris, France.
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93
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Rajakumar B, Flumerfelt BA, Hrycyshyn AW, Rajakumar N. Nitric Oxide-Containing Neurons in Long-Term Grafts in a Rat Model of Parkinson's Disease. Cell Transplant 2017; 16:449-59. [PMID: 17708335 DOI: 10.3727/000000007783464975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The role that nitric oxide may play in modulating graft function in long-term fetal ventral mesencephalic grafts in an animal model of Parkinson's disease was investigated. Mature grafts harvested from the entire fetal ventral mesencephalon possessed a large number of neuronal nitric oxide synthase (nNOS)/NADPH-diaphorase-containing neurons throughout the graft intermingled with dopaminergic neurons. The morphological and neurochemical characteristics of these NADPH-diaphorase neurons resembled those in centers adjacent to the substantia nigra of adult brain but not that of the striatum. Pretreatment with the nNOS blocker, 7-nitroindazole, resulted in contralateral rotations following methamphetamine challenge in long-term grafted animals that previously showed normalized rotational behavior. In contrast, mature grafts derived from fetal ventral mesencephalon without the midline areas possessed only a few nNOS-containing neurons within the grafts, and a similar methamphetamine challenge following 7-nitroindazole pretreatment in long-term grafted rats that previously showed normalized rotational behavior resulted in random movements. Our results indicate that nitric oxide-containing neurons inadvertently included during grafting may affect graft function, and excluding the midline areas of the ventral mesencephalon during tissue harvesting may minimize this effect.
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Affiliation(s)
- B Rajakumar
- Department of Anatomy & Cell Biology, University of Western Ontario, London, Ontario, Canada
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94
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Li S, Wei D, Mao Z, Chen L, Yan X, Li Y, Dong S, Wang D. Design, synthesis, immunocytochemistry evaluation, and molecular docking investigation of several 4-aminopyridine derivatives as potential neuroprotective agents for treating Parkinson's disease. Bioorg Chem 2017; 73:63-75. [PMID: 28618343 DOI: 10.1016/j.bioorg.2017.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/22/2017] [Accepted: 05/21/2017] [Indexed: 11/20/2022]
Abstract
Neuroprotection refers to the relative preservation of neuronal structure and function. Neuroprotective agents refer to substances that are capable of preserving brain function and structure. Currently, there are no neuroprotective agents available that can effectively relieve the progression of Parkinson's disease. In this work, five novel 4-aminopyridine derivatives, including three amides and two ureas, were designed, synthesized, and evaluated using the rat PC12 mice pheochromocytoma cell line as an in vitro model. As well as human Rho kinase inhibitory experiment was performed. Among them, compound 3, which exhibited high cell viability, low cytotoxicity and good efficacy of inhibition on α-synuclein, oxidation, inflammation and Rho kinase, was profound as potential agents for Parkinson's disease (PD).
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Affiliation(s)
- Shulin Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Daiyan Wei
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Zhuo Mao
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Ligong Chen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Xilong Yan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Yang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Shengjie Dong
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Donghua Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China.
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95
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Au NPB, Ma CHE. Recent Advances in the Study of Bipolar/Rod-Shaped Microglia and their Roles in Neurodegeneration. Front Aging Neurosci 2017; 9:128. [PMID: 28522972 PMCID: PMC5415568 DOI: 10.3389/fnagi.2017.00128] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/18/2017] [Indexed: 01/06/2023] Open
Abstract
Microglia are the resident immune cells of the central nervous system (CNS) and they contribute to primary inflammatory responses following CNS injuries. The morphology of microglia is closely associated with their functional activities. Most previous research efforts have attempted to delineate the role of ramified and amoeboid microglia in the pathogenesis of neurodegenerative diseases. In addition to ramified and amoeboid microglia, bipolar/rod-shaped microglia were first described by Franz Nissl in 1899 and their presence in the brain was closely associated with the pathology of infectious diseases and sleeping disorders. However, studies relating to bipolar/rod-shaped microglia are very limited, largely due to the lack of appropriate in vitro and in vivo experimental models. Recent studies have reported the formation of bipolar/rod-shaped microglia trains in in vivo models of CNS injury, including diffuse brain injury, focal transient ischemia, optic nerve transection and laser-induced ocular hypertension (OHT). These bipolar/rod-shaped microglia formed end-to-end alignments in close proximity to the adjacent injured axons, but they showed no interactions with blood vessels or other types of glial cell. Recent studies have also reported on a highly reproducible in vitro culture model system to enrich bipolar/rod-shaped microglia that acts as a powerful tool with which to characterize this form of microglia. The molecular aspects of bipolar/rod-shaped microglia are of great interest in the field of CNS repair. This review article focuses on studies relating to the morphology and transformation of microglia into the bipolar/rod-shaped form, along with the differential gene expression and spatial distribution of bipolar/rod-shaped microglia in normal and pathological CNSs. The spatial arrangement of bipolar/rod-shaped microglia is crucial in the reorganization and remodeling of neuronal and synaptic circuitry following CNS injuries. Finally, we discuss the potential neuroprotective roles of bipolar/rod-shaped microglia, and the possibility of transforming ramified/amoeboid microglia into bipolar/rod-shaped microglia. This will be of considerable clinical benefit in the development of novel therapeutic strategies for treating various neurodegenerative diseases and promoting CNS repair after injury.
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Affiliation(s)
- Ngan Pan Bennett Au
- Department of Biomedical Sciences, City University of Hong KongKowloon Tong, Hong Kong
| | - Chi Him Eddie Ma
- Department of Biomedical Sciences, City University of Hong KongKowloon Tong, Hong Kong.,Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong KongKowloon Tong, Hong Kong.,State Key Laboratory in Marine Pollution, City University of Hong KongKowloon Tong, Hong Kong
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Blaylock RL. Parkinson's disease: Microglial/macrophage-induced immunoexcitotoxicity as a central mechanism of neurodegeneration. Surg Neurol Int 2017; 8:65. [PMID: 28540131 PMCID: PMC5421223 DOI: 10.4103/sni.sni_441_16] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/01/2017] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease is one of the several neurodegenerative disorders that affects aging individuals, with approximately 1% of those over the age of 60 years developing the disorder in their lifetime. The disease has the characteristics of a progressive disorder in most people, with a common pattern of pathological change occurring in the nervous system that extends beyond the classical striatal degeneration of dopaminergic neurons. Earlier studies concluded that the disease was a disorder of alpha-synuclein, with the formation of aggregates of abnormal alpha-synuclein being characteristic. More recent studies have concluded that inflammation plays a central role in the disorder and that the characteristic findings can be accounted for by either mutation or oxidative damage to alpha-synuclein, with resulting immune reactions from surrounding microglia, astrocytes, and macrophages. What has been all but ignored in most of these studies is the role played by excitotoxicity and that the two processes are intimately linked, with inflammation triggered cell signaling enhancing the excitotoxic cascade. Further, there is growing evidence that it is the excitotoxic reactions that actually cause the neurodegeneration. I have coined the name immunoexcitotoxicity to describe this link between inflammation and excitotoxicity. It appears that the two processes are rarely, if ever, separated in neurodegenerative diseases.
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Johnson NW, Özkan M, Burgess AP, Prokic EJ, Wafford KA, O'Neill MJ, Greenhill SD, Stanford IM, Woodhall GL. Phase-amplitude coupled persistent theta and gamma oscillations in rat primary motor cortex in vitro. Neuropharmacology 2017; 119:141-156. [PMID: 28400257 DOI: 10.1016/j.neuropharm.2017.04.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 04/03/2017] [Accepted: 04/06/2017] [Indexed: 01/26/2023]
Abstract
In vivo, theta (4-7 Hz) and gamma (30-80 Hz) neuronal network oscillations are known to coexist and display phase-amplitude coupling (PAC). However, in vitro, these oscillations have for many years been studied in isolation. Using an improved brain slice preparation technique we have, using co-application of carbachol (10 μM) and kainic acid (150 nM), elicited simultaneous theta (6.6 ± 0.1 Hz) and gamma (36.6 ± 0.4 Hz) oscillations in rodent primary motor cortex (M1). Each oscillation showed greatest power in layer V. Using a variety of time series analyses we detected significant cross-frequency coupling in 74% of slice preparations. Differences were observed in the pharmacological profile of each oscillation. Thus, gamma oscillations were reduced by the GABAA receptor antagonists, gabazine (250 nM and 2 μM), and picrotoxin (50 μM) and augmented by AMPA receptor antagonism with SYM2206 (20 μM). In contrast, theta oscillatory power was increased by gabazine, picrotoxin and SYM2206. GABAB receptor blockade with CGP55845 (5 μM) increased both theta and gamma power, and similar effects were seen with diazepam, zolpidem, MK801 and a series of metabotropic glutamate receptor antagonists. Oscillatory activity at both frequencies was reduced by the gap junction blocker carbenoxolone (200 μM) and by atropine (5 μM). These data show theta and gamma oscillations in layer V of rat M1 in vitro are cross-frequency coupled, and are mechanistically distinct. The development of an in vitro model of phase-amplitude coupled oscillations will facilitate further mechanistic investigation of the generation and modulation of coupled activity in mammalian cortex.
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Affiliation(s)
- Nicholas W Johnson
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom
| | - Mazhar Özkan
- Department of Anatomy, School of Medicine, Marmara University, Istanbul, Turkey
| | - Adrian P Burgess
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom
| | - Emma J Prokic
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom
| | - Keith A Wafford
- Neuroscience Division, Eli Lilly & Co. Ltd., Windlesham, GU20 6PH, United Kingdom
| | - Michael J O'Neill
- Neuroscience Division, Eli Lilly & Co. Ltd., Windlesham, GU20 6PH, United Kingdom
| | - Stuart D Greenhill
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom
| | - Ian M Stanford
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom
| | - Gavin L Woodhall
- Aston Brain Centre, Aston University, School of Life and Health Sciences, Birmingham, B4 7ET, United Kingdom.
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98
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Valproic Acid Protects Primary Dopamine Neurons from MPP +-Induced Neurotoxicity: Involvement of GSK3 β Phosphorylation by Akt and ERK through the Mitochondrial Intrinsic Apoptotic Pathway. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8124501. [PMID: 28421199 PMCID: PMC5380829 DOI: 10.1155/2017/8124501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/06/2017] [Indexed: 12/22/2022]
Abstract
Valproic acid (VPA), a drug widely used to treat manic disorder and epilepsy, has recently shown neuroprotective effects in several neurological diseases, particularly in Parkinson's disease (PD). The goal of the present study was to confirm VPA's dose-dependent neuroprotective propensities in the MPP+ model of PD in primary dopamine (DA) neurons and to investigate the underlying molecular mechanisms using specific mitogen-activated protein kinases (MAPKs) and phosphatidylinositol 3-kinase- (PI3K-) Akt signaling inhibitors. VPA reversed MPP+-induced mitochondrial apoptosis and counteracted MPP+-induced extracellular signal-regulated kinase (ERK) and Akt repression and inhibited glycogen synthase kinase 3β (GSK3β) activation through induction of GSK3β phosphorylation. Moreover, inhibitors of the PI3K and MAPK pathways abolished GSK3β phosphorylation and diminished the VPA-induced neuroprotective effect. These findings indicated that VPA's neuroprotective effect in the MPP+-model of PD is associated with GSK3β phosphorylation via Akt and ERK activation in the mitochondrial intrinsic apoptotic pathway. Thus, VPA may be a promising therapeutic candidate for clinical treatment of PD.
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99
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Ferroptosis and cell death mechanisms in Parkinson's disease. Neurochem Int 2017; 104:34-48. [DOI: 10.1016/j.neuint.2017.01.004] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/18/2016] [Accepted: 01/06/2017] [Indexed: 01/18/2023]
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100
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Prajapati SK, Garabadu D, Krishnamurthy S. Coenzyme Q10 Prevents Mitochondrial Dysfunction and Facilitates Pharmacological Activity of Atorvastatin in 6-OHDA Induced Dopaminergic Toxicity in Rats. Neurotox Res 2017; 31:478-492. [DOI: 10.1007/s12640-016-9693-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 01/09/2023]
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