1
|
Xiang Y, Song X, Long D. Ferroptosis regulation through Nrf2 and implications for neurodegenerative diseases. Arch Toxicol 2024; 98:579-615. [PMID: 38265475 PMCID: PMC10861688 DOI: 10.1007/s00204-023-03660-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/07/2023] [Indexed: 01/25/2024]
Abstract
This article provides an overview of the background knowledge of ferroptosis in the nervous system, as well as the key role of nuclear factor E2-related factor 2 (Nrf2) in regulating ferroptosis. The article takes Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), and amyotrophic lateral sclerosis (ALS) as the starting point to explore the close association between Nrf2 and ferroptosis, which is of clear and significant importance for understanding the mechanism of neurodegenerative diseases (NDs) based on oxidative stress (OS). Accumulating evidence links ferroptosis to the pathogenesis of NDs. As the disease progresses, damage to the antioxidant system, excessive OS, and altered Nrf2 expression levels, especially the inhibition of ferroptosis by lipid peroxidation inhibitors and adaptive enhancement of Nrf2 signaling, demonstrate the potential clinical significance of Nrf2 in detecting and identifying ferroptosis, as well as targeted therapy for neuronal loss and mitochondrial dysfunction. These findings provide new insights and possibilities for the treatment and prevention of NDs.
Collapse
Affiliation(s)
- Yao Xiang
- School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China
| | - Xiaohua Song
- School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China
| | - Dingxin Long
- School of Public Health, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China.
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, Hengyang Medical School, University of South China, Hengyang, 421001, People's Republic of China.
| |
Collapse
|
2
|
Xu Y, Geng Z, Sun Y, Zhu G, Xiao L, Wang Z, Li B, Liu X, Shi J, Song X, Hu J, Qi Q. Complanatuside A improves functional recovery after spinal cord injury through inhibiting JNK signaling-mediated microglial activation. Eur J Pharmacol 2024; 965:176287. [PMID: 38158110 DOI: 10.1016/j.ejphar.2023.176287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND AND AIMS Complanatuside A (ComA) is a flavonoid-rich compound in Astragalus membranaceus that has anti-inflammatory and neuroprotective effects. In this study, we focused on the effect of ComA on spinal cord injury (SCI) in mice and explored its possible mechanisms. METHODS The SCI model was constructed using C57BL/6J mice, and the effect of ComA on motor function recovery in SCI mice was evaluated through the BMS (Basso Mouse Scale) and footprint test. The histological effects of ComA on SCI mice were evaluated by hematoxylin-eosin (H&E) staining, Luxol-fast blue (LFB) staining, and Nissl staining. In both in vivo and in vitro experiments, we detected the activation of microglia and the release of inflammatory factors through molecular experiments. Immunofluorescence and Western blotting confirmed that ComA can prevent neuronal apoptosis caused by activated microglia through the c-Jun N-terminal kinase (JNK) pathway. RESULTS Our research results confirm that ComA can improve motor function in mice after SCI. Our in vitro results indicate that ComA can inhibit the activation of BV2 cells and the release of proinflammatory mediators. In addition, ComA can prevent neuronal cell apoptosis caused by activated BV2 cells. Finally, we found that ComA works through the JNK signaling pathway. CONCLUSIONS ComA can accelerate the restoration of motor function in mice after SCI, possibly by reducing neuronal apoptosis via inhibition of JNK-related signaling pathways, a reduction in microglial activation, and inhibition of inflammatory factor release. Our data indicate that ComA is a promising drug candidate for improving functional recovery in patients with SCI.
Collapse
Affiliation(s)
- Yibo Xu
- School of Basic Medicine, Bengbu Medical University, Bengbu, Anhui, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Zhijun Geng
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China; Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Yang Sun
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Guoqing Zhu
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Linyu Xiao
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Zhiyuan Wang
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Bohan Li
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Xinyue Liu
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Jinran Shi
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China
| | - Xue Song
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China; Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China.
| | - Jianguo Hu
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, China; Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China.
| | - Qi Qi
- School of Basic Medicine, Bengbu Medical University, Bengbu, Anhui, China; Key Laboratory of Tissue Transplantation, Bengbu Medical University, Bengbu, China.
| |
Collapse
|
3
|
Atone J, Wagner K, Koike S, Yang J, Hwang SH, Hammock BD. Inhibition of soluble epoxide hydrolase reduces paraquat neurotoxicity in rodents. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 98:104070. [PMID: 36682504 PMCID: PMC9992278 DOI: 10.1016/j.etap.2023.104070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Given the paucity of research surrounding the effect of chronic paraquat on striatal neurotoxicity, there is a need for further investigation into the neurotoxic effects of paraquat in mouse striatum. Furthermore, while previous studies have shown that inhibiting soluble epoxide hydrolase mitigates MPTP-mediated endoplasmic reticulum stress in mouse striatum, its effect on paraquat toxicity is still unknown. Thus, this study attempts to observe changes in inflammatory and endoplasmic reticulum stress markers in mouse striatum following chronic paraquat administration to determine whether inhibiting soluble epoxide hydrolase mitigates paraquat-induced neurotoxicity and whether it can reduce TLR4-mediated inflammation in primary astrocytes and microglia. Our results show that while the pro-inflammatory effect of chronic paraquat is small, there is a significant induction of inflammatory and cellular stress markers, such as COX2 and CHOP, that can be mitigated through a prophylactic administration of a soluble epoxide hydrolase inhibitor.
Collapse
Affiliation(s)
- Jogen Atone
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Karen Wagner
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Shinichiro Koike
- Department of Nutrition, University of California Davis, Davis, CA 95616, USA
| | - Jun Yang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Sung Hee Hwang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA.
| |
Collapse
|
4
|
Han S, Feng Y, Guo M, Hao Y, Sun J, Zhao Y, Dong Q, Zhao Y, Cui M. Role of OCT3 and DRP1 in the Transport of Paraquat in Astrocytes: A Mouse Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2022; 130:57004. [PMID: 35511227 PMCID: PMC9070608 DOI: 10.1289/ehp9505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Paraquat (PQ) is a pesticide, exposure to which has been associated with an increased risk of Parkinson's disease; however, PQ transport mechanisms in the brain are still unclear. Our previous studies indicated that the organic cation transporter 3 (OCT3) expressed on astrocytes could uptake PQ and protect the dopaminergic (DA) neurons from a higher level of extracellular PQ. At present, it is unknown how OCT3 levels are altered during chronic PQ exposure or aging, nor is it clear how the compensatory mechanisms are triggered by OCT3 deficiency. Dynamic related protein 1 (DRP1) was previously reported to ameliorate the loss of neurons during Parkinson's disease. Nowadays, mounting studies have revealed the functions of astrocyte DRP1, prompting us to hypothesize that DRP1 could regulate the PQ transport capacity of astrocytes. OBJECTIVES The present study aimed to further explore PQ transport mechanisms in the nigrostriatal system and identify pathways involved in extracellular PQ clearance. METHODS Models of PQ-induced neurodegeneration were established by intraperitoneal (i.p.) injection of PQ in wild-type (WT) and organic cation transporter-3-deficient (Oct3-/-) mice. DRP1 knockdown was achieved by viral tools in vivo and small interfering RNA (siRNA) in vitro. Extracellular PQ was detected by in vivo microdialysis. In vitro transport assays were used to directly observe the functions of different transporters. PQ-induced neurotoxicity was evaluated by tyrosine hydroxylase immunohistochemistry, in vivo microdialysis for striatal DA and behavior tests. Western blotting analysis or immunofluorescence was used to evaluate the expression levels and locations of proteins in vitro or in vivo. RESULTS Older mice and those chronically exposed to PQ had a lower expression of brain OCT3 and, following exposure to a 10-mg/kg i.p. PQ2+ loading dose, a higher concentration of extracellular PQ. DRP1 levels were higher in astrocytes and neurons of WT and Oct3-/- mice after chronic exposure to PQ; this was supported by finding higher levels of DRP1 after PQ treatment of dopamine transporter-expressing neurons with and without OCT3 inhibition and in primary astrocytes of WT and Oct3-/- mice. Selective astrocyte DRP1 knockdown ameliorated the PQ2+-induced neurotoxicity in Oct3-/- mice but not in WT mice. GL261 astrocytes with siRNA-mediated DRP1 knockdown had a higher expression of alanine-serine-cysteine transporter 2 (ASCT2), and transport studies suggest that extracellular PQ was transported into astrocytes by ASCT2 when OCT3 was absent. DISCUSSION The present study mainly focused on the transport mechanisms of PQ between the dopaminergic neurons and astrocytes. Lower OCT3 levels were found in the older or chronically PQ-treated mice. Astrocytes with DRP1 inhibition (by viral tools or mitochondrial division inhibitor-1) had higher levels of ASCT2, which we hypothesize served as an alternative transporter to remove extracellular PQ when OCT3 was deficient. In summary, our data suggest that OCT3, ASCT2 located on astrocytes and the dopamine transporter located on DA terminals may function in a concerted manner to mediate striatal DA terminal damage in PQ-induced neurotoxicity. https://doi.org/10.1289/EHP9505.
Collapse
Affiliation(s)
- Sida Han
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yiwei Feng
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Min Guo
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yining Hao
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jian Sun
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yichen Zhao
- Department of Neurology, Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
- Ministry of Education (MOE) Frontiers Center for Brain Science, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Yanxin Zhao
- Department of Neurology, Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Mei Cui
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| |
Collapse
|
5
|
Rakowski M, Porębski S, Grzelak A. Nutraceuticals as Modulators of Autophagy: Relevance in Parkinson’s Disease. Int J Mol Sci 2022; 23:ijms23073625. [PMID: 35408992 PMCID: PMC8998447 DOI: 10.3390/ijms23073625] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/20/2022] [Accepted: 03/23/2022] [Indexed: 12/29/2022] Open
Abstract
Dietary supplements and nutraceuticals have entered the mainstream. Especially in the media, they are strongly advertised as safe and even recommended for certain diseases. Although they may support conventional therapy, sometimes these substances can have unexpected side effects. This review is particularly focused on the modulation of autophagy by selected vitamins and nutraceuticals, and their relevance in the treatment of neurodegenerative diseases, especially Parkinson’s disease (PD). Autophagy is crucial in PD; thus, the induction of autophagy may alleviate the course of the disease by reducing the so-called Lewy bodies. Hence, we believe that those substances could be used in prevention and support of conventional therapy of neurodegenerative diseases. This review will shed some light on their ability to modulate the autophagy.
Collapse
Affiliation(s)
- Michał Rakowski
- The Bio-Med-Chem Doctoral School of the University of Lodz and Lodz Institutes of the Polish Academy of Sciences, University of Lodz, 90-237 Lodz, Poland
- Cytometry Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (S.P.); (A.G.)
- Correspondence:
| | - Szymon Porębski
- Cytometry Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (S.P.); (A.G.)
| | - Agnieszka Grzelak
- Cytometry Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland; (S.P.); (A.G.)
| |
Collapse
|
6
|
Zhang W, Fan X, Fan Z, Wu B, Wang M, Duan W, Song B. Acute exposure to paraquat affects the phenotypic differentiation of substantia nigra microglia in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:21339-21347. [PMID: 34761315 DOI: 10.1007/s11356-021-17262-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
The toxicity of the bipyridine cationic herbicide paraquat (PQ) to the lung and kidneys has been widely documented, but the acute toxic effects of PQ on the nervous system have received little attention. This study aimed to explore the changes in the phenotypic differentiation of microglia in rats caused by acute PQ exposure. As results, acute PQ exposure induced pyknosis, edema, and apoptosis in substantia nigra neurons. Immunohistochemistry and western blotting showed that, on day 18, with the increase of exposure dose, the number of Iba-1-positive cells presented an increasing trend with no statistically significant difference among the groups (P > 0.05). Compared with the control group, the process length of Iba-1-positive cells decreased of acute 25 mg/kg PQ exposure on day 18 (P < 0.05). Compared with the control group, on day 39, the number of Iba-1-positive cells in the SN decreased of acute 25 mg/kg PQ exposure, while that increased of acute 45 mg/kg PQ exposure (P < 0.05). The number of endpoints decreased of acute 25 mg/kg PQ exposure (P < 0.05). The process length became shorter both of acute 25 mg/kg and 45 mg/kg PQ exposure (P < 0.05). On day 69, compared with the control group, the number of Iba-1-positive cells in the SN significantly increased of acute 45 mg/kg PQ exposure (P < 0.05). The number of endpoints increased and the process length became longer of acute 25 mg/kg PQ exposure (P < 0.05). Then, the mean fluorescence intensity of inducible nitric oxide synthase (iNOS) and arginine 1 (ARG1) was compared. The number of the M1 phenotype of microglia increased during the early stage of acute 25 mg/kg PQ exposure, whereas the number of the M2 phenotype of microglia increased during the early stage of acute 45 mg/kg PQ exposure (P < 0.05). On day 39, compared with the control group, the expression of iNOS in the SN of acute 45 mg/kg PQ exposure increased than of acute 25 mg/kg exposure. The expression of Arg-1 of 25 mg/kg PQ exposure was significantly increased (P < 0.05). On day 69, the expression of iNOS and ARG1 increased in the 25 and 45 mg/kg PQ exposure groups. In summary, changes in microglia phenotypic differentiation were related to exposure dose and exposure time (P < 0.05).
Collapse
Affiliation(s)
- Wendi Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China
| | - Xiaobei Fan
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China
| | - Zhuo Fan
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China
| | - Bailin Wu
- Department of Radiology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China
| | - Mengchao Wang
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China
| | - Wanyu Duan
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China
| | - Bo Song
- Department of Occupational Health and Environmental Health, School of Public Health, Hebei Medical University, Shijiazhuang, 050000, Hebei, China.
- Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, 050000, Hebei, China.
| |
Collapse
|
7
|
Wang Y, Gao L, Chen J, Li Q, Huo L, Wang Y, Wang H, Du J. Pharmacological Modulation of Nrf2/HO-1 Signaling Pathway as a Therapeutic Target of Parkinson's Disease. Front Pharmacol 2021; 12:757161. [PMID: 34887759 PMCID: PMC8650509 DOI: 10.3389/fphar.2021.757161] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/21/2021] [Indexed: 12/19/2022] Open
Abstract
Parkinson’s disease (PD) is a complex neurodegenerative disorder featuring both motor and nonmotor symptoms associated with a progressive loss of dopaminergic neurons in the substantia nigra pars compacta. Oxidative stress (OS) has been implicated in the pathogenesis of PD. Genetic and environmental factors can produce OS, which has been implicated as a core contributor to the initiation and progression of PD through the degeneration of dopaminergic neurons. The transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) orchestrates activation of multiple protective genes, including heme oxygenase-1 (HO-1), which protects cells from OS. Nrf2 has also been shown to exert anti-inflammatory effects and modulate both mitochondrial function and biogenesis. Recently, a series of studies have reported that different bioactive compounds were shown to be able to activate Nrf2/antioxidant response element (ARE) and can ameliorate PD-associated neurotoxin, both in animal models and in tissue culture. In this review, we briefly overview the sources of OS and the association between OS and the pathogenesis of PD. Then, we provided a concise overview of Nrf2/ARE pathway and delineated the role played by activation of Nrf2/HO-1 in PD. At last, we expand our discussion to the neuroprotective effects of pharmacological modulation of Nrf2/HO-1 by bioactive compounds and the potential application of Nrf2 activators for the treatment of PD. This review suggests that pharmacological modulation of Nrf2/HO-1 signaling pathway by bioactive compounds is a therapeutic target of PD.
Collapse
Affiliation(s)
- Yumin Wang
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Luyan Gao
- Department of Neurology, Tianjin Fourth Central Hospital, The Fourth Central Hospital Affiliated to Nankai University, The Fourth Central Clinical College, Tianjin Medical University, Tianjin, China
| | - Jichao Chen
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Qiang Li
- Department of Neurology, The Affiliated Hospital of Chifeng University, Chifeng, China
| | - Liang Huo
- Department of Pediatric Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanchao Wang
- Department of Neurology, The Affiliated Hospital of Chifeng University, Chifeng, China
| | - Hongquan Wang
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| | - Jichen Du
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, China
| |
Collapse
|
8
|
Kuter KZ, Śmiałowska M, Ossowska K. The influence of preconditioning with low dose of LPS on paraquat-induced neurotoxicity, microglia activation and expression of α-synuclein and synphilin-1 in the dopaminergic system. Pharmacol Rep 2021; 74:67-83. [PMID: 34762280 PMCID: PMC8786770 DOI: 10.1007/s43440-021-00340-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 12/21/2022]
Abstract
Background Prolonged inflammation, oxidative stress, and protein aggregation are important factors contributing to Parkinson’s disease (PD) pathology. A known ROS generator, pesticide paraquat (PQ), was indicated as an environmental substance potentially increasing the incidence of PD and is used to model this disease. We investigated if a combination of inflammation and oxidative stress in subthreshold doses would exacerbate the modelled neuropathology. Methods We examined the late effects of acute or repeated peripheral inflammation induced by low dose of LPS (10 μg/kg, ip) on PQ toxicity in the rat nigrostriatal dopaminergic pathway, microglial activation markers and expression of major Lewy bodies proteins, α-synuclein and synphilin-1. Results We observed that LPS increased, while PQ decreased body temperature and microglia CD11b expression in the SN. Single LPS pretreatment, 3 h before repeated weekly PQ injections (4×) slightly aggravated neuronal degeneration in the SN. Moreover, degeneration of dopaminergic neurons after weekly repeated inflammation itself (4×) was observed. Interestingly, repeated LPS administration combined with each PQ dose counteracted such effect. The expression of α-synuclein decreased after repeated LPS injections, while only combined, repeated LPS and PQ treatment lowered the levels of synphilin-1. Therefore, α-synuclein and synphilin-1 expression change was influenced by different mechanisms. Concomitantly, decreased levels of the two proteins correlated with decreased degeneration of dopaminergic neurons and with a normalized microglia activation marker. Conclusions Our results indicate that both oxidative insult triggered by PQ and inflammation caused by peripheral LPS injection can individually induce neurotoxicity. Those factors act through different mechanisms that are not additive and not selective towards dopaminergic neurons, probably implying microglia. Repeated, but small insults from oxidative stress and inflammation when administered in significant time intervals can counteract each other and even act protective as a preconditioning effect. The timing of such repetitive insults is also of essence. Supplementary Information The online version contains supplementary material available at 10.1007/s43440-021-00340-1.
Collapse
Affiliation(s)
- Katarzyna Z Kuter
- Department of Neuropsychopharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St., 31-343, Kraków, Poland.
| | - Maria Śmiałowska
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Krystyna Ossowska
- Department of Neuropsychopharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna St., 31-343, Kraków, Poland
| |
Collapse
|
9
|
Fang Y, Jiang Q, Li S, Zhu H, Xu R, Song N, Ding X, Liu J, Chen M, Song M, Ding J, Lu M, Wu G, Hu G. Opposing functions of β-arrestin 1 and 2 in Parkinson's disease via microglia inflammation and Nprl3. Cell Death Differ 2021; 28:1822-1836. [PMID: 33686256 PMCID: PMC8184754 DOI: 10.1038/s41418-020-00704-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 11/25/2020] [Accepted: 11/30/2020] [Indexed: 01/14/2023] Open
Abstract
Although β-arrestins (ARRBs) regulate diverse physiological and pathophysiological processes, their functions and regulation in Parkinson's disease (PD) remain poorly defined. In this study, we show that the expression of β-arrestin 1 (ARRB1) and β-arrestin 2 (ARRB2) is reciprocally regulated in PD mouse models, particularly in microglia. ARRB1 ablation ameliorates, whereas ARRB2 knockout aggravates, the pathological features of PD, including dopaminergic neuron loss, neuroinflammation and microglia activation in vivo, and microglia-mediated neuron damage in vitro. We also demonstrate that ARRB1 and ARRB2 produce adverse effects on inflammation and activation of the inflammatory STAT1 and NF-κB pathways in primary cultures of microglia and macrophages and that two ARRBs competitively interact with the activated form of p65, a component of the NF-κB pathway. We further find that ARRB1 and ARRB2 differentially regulate the expression of nitrogen permease regulator-like 3 (Nprl3), a functionally poorly characterized protein, as revealed by RNA sequencing, and that in the gain- and loss-of-function studies, Nprl3 mediates the functions of both ARRBs in microglia inflammatory responses. Collectively, these data demonstrate that two closely related ARRBs exert opposite functions in microglia-mediated inflammation and the pathogenesis of PD which are mediated at least in part through Nprl3 and provide novel insights into the understanding of the functional divergence of ARRBs in PD.
Collapse
Affiliation(s)
- Yinquan Fang
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Qingling Jiang
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Shanshan Li
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, 210023, Jiangsu, China
| | - Hong Zhu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Rong Xu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Nanshan Song
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Xiao Ding
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, 210023, Jiangsu, China
| | - Jiaqi Liu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Miaomiao Chen
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Mengmeng Song
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, 210023, Jiangsu, China
| | - Jianhua Ding
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Ming Lu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China
| | - Guangyu Wu
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, 1459 Laney Walker Blvd., Augusta, GA, 30912, USA
| | - Gang Hu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 818 Tianyuan East Road, Nanjing, 211166, Jiangsu, China.
- Department of Pharmacology, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing, 210023, Jiangsu, China.
| |
Collapse
|
10
|
Sarkar S. Mechanism of Gene-Environment Interactions Driving Glial Activation in Parkinson's Diseases. Curr Environ Health Rep 2021; 8:203-211. [PMID: 34043217 DOI: 10.1007/s40572-021-00320-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE OF REVIEW Parkinson's disease (PD) is the most prevalent motor disorder and is characterized by loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) region of the brain. Though the pathology of PD is well established, the cause of this neuronal loss is not well understood. Approximately 90% of PD cases are sporadic, and the environment plays a significant role in disease pathogenesis. The etiology of PD is highly complex, with neuroinflammation being one of the most critical factors implicated in PD. However, the signaling mechanisms underlying neuroinflammation and its interaction with environmental factors are unclear. RECENT FINDINGS Astroglia and microglia are the two principal cells that play an essential role in maintaining neuronal health in many ways, including through immunological means. Exposure to environmental stressors from various sources affects these glial cells leading to chronic and sustained inflammation. Recent epidemiological studies have identified an interaction among environmental factors and glial genes in Parkinson's disease. Mechanistic studies have shown that exposure to pesticides like rotenone and paraquat, neurotoxic metals like manganese and lead, and even diesel exhaust fumes induce glial activation by regulating various key inflammatory pathways, including the inflammasomes, NOX pathways, and others. This review aims to discuss the recent advances in understanding the mechanism of glial induction in response to environmental stressors and discuss the potential role of gene-environment interaction in driving glial activation.
Collapse
Affiliation(s)
- Souvarish Sarkar
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA, 02115, USA.
| |
Collapse
|
11
|
Jing L, Hou L, Zhang D, Li S, Ruan Z, Zhang X, Hong JS, Wang Q. Microglial Activation Mediates Noradrenergic Locus Coeruleus Neurodegeneration via Complement Receptor 3 in a Rotenone-Induced Parkinson's Disease Mouse Model. J Inflamm Res 2021; 14:1341-1356. [PMID: 33859489 PMCID: PMC8044341 DOI: 10.2147/jir.s299927] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/24/2021] [Indexed: 12/17/2022] Open
Abstract
Background Chronic exposure to the insecticide rotenone can damage dopaminergic neurons and lead to an increased risk of Parkinson’s disease (PD). Whereas it is not clear whether rotenone induces neurodegeneration of noradrenergic locus coeruleus (LC/NE) neurons. Chronic neuroinflammation mediated by microglia has been involved in the pathogenesis of PD. Evidence shows that complement receptor 3 (CR3) is a crucial regulator of microglial activation and related neurodegeneration. However, it is not clear whether CR3 mediates rotenone-elicited degeneration of LC/NE neurons through microglia-mediated neuroinflammation. Materials and Methods Wild type (WT) and CR3 knockout (KO) mice were treated with rotenone. PLX3397 and minocycline were used to deplete or inactivate the microglia. Leukadherin-1 (LA-1) was used to modulate CR3. LC/NE neurodegeneration, microglial phenotype, and expression of CR3 were determined by using immunohistochemistry, Western blot and real-time polymerase chain reaction (PCR) techniques. The glutathione (GSH) and malondialdehyde (MDA) contents were measured by using commercial kits. Results Rotenone exposure led to dose- and time-dependent LC/NE neuronal loss and microglial activation in mice. Depletion of microglia by PLX3397 or inhibition of microglial activation by minocycline significantly reduced rotenone-induced LC/NE neurodegeneration. Mechanistic studies revealed that CR3 played an essential role in the rotenone-induced activation of microglia and neurodegeneration of LC/NE neurons. Rotenone elevated the expression of CR3, and genetic ablation of CR3 markedly reduced rotenone-induced microglial activation and M1 polarization. LA-1 also suppressed rotenone-induced toxic microglial M1 activation. Furthermore, lack of CR3 or treatment with LA-1 reduced oxidative stress in the brainstem of rotenone-intoxicated mice. Finally, we found that mice deficient in CR3 or treated with LA-1 were more resistant to rotenone-induced LC/NE neurodegeneration than WT or vehicle-treated mice, respectively. Conclusion Our results indicate that CR3-mediated microglial activation participates in rotenone-induced LC/NE neurodegeneration, providing novel insight into environmental toxin-induced neurotoxicity and related Parkinsonism.
Collapse
Affiliation(s)
- Lu Jing
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, 116044, People's Republic of China.,Department of Neurology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, People's Republic of China
| | - Liyan Hou
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Dongdong Zhang
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Sheng Li
- National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Zhengzheng Ruan
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Xiaomeng Zhang
- National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, People's Republic of China
| | - Jau-Shyong Hong
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Qingshan Wang
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, 116044, People's Republic of China.,National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, People's Republic of China
| |
Collapse
|
12
|
Dwyer Z, Rudyk C, Farmer K, Beauchamp S, Shail P, Derksen A, Fortin T, Ventura K, Torres C, Ayoub K, Hayley S. Characterizing the protracted neurobiological and neuroanatomical effects of paraquat in a murine model of Parkinson's disease. Neurobiol Aging 2021; 100:11-21. [PMID: 33450723 DOI: 10.1016/j.neurobiolaging.2020.11.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/16/2020] [Accepted: 11/19/2020] [Indexed: 01/18/2023]
Abstract
The primary motor symptoms of Parkinson's disease (PD) result from the degeneration of dopamine-producing neurons of the substantia nigra pars compacta (SNc), and often, the loss is asymmetrical, resulting in unilateral tremor presentation. Notably, age is the primary risk factor for PD, and it is likely that the disease ultimately stems from the impact of environmental factors, which interact with the aging process. Recent research has focused on the role of microglia and pro-oxidative responses in dopaminergic neuronal death. In this study, we sought to examine the neurodegenerative, inflammatory, and stress effects of exposure to the etiologically relevant pesticide, paraquat, over time (up to 6 months after injections). We also were interested in whether a high-resolution, 7-Tesla animal magnetic resonance imaging would be sensitive enough to detect the degenerative impact of paraquat. We found that paraquat induced a loss of dopaminergic SNc neurons and activation of microglia that surprisingly did not change over 6 months after the last injection. A long-lasting reduction was evident for body weight, and alterations in organ (lung and heart) weight were evident, which reflect the peripheral impact of the toxicant. The microglial proinflammatory actin-remodeling factor, WAVE2, along with the inflammatory transcription factor, nuclear factor kappa B were also elevated within the brain. Remarkably, the stress hormone, corticosterone, was still significantly elevated 1 month after paraquat, whereas the inflammasome factor, caspase-1, and antigen presentation factor, MFG-E8, both displayed delayed rises after the 6-month time. Using high-resolution magnetic resonance imaging, we detected no striatal changes but modest hemispheric differences in the SNc and time-dependent volumetric enlargement of the ventricles in paraquat-treated mice. These data suggest that paraquat induces long-term nigrostriatal pathology (possibly asymmetric) and inflammatory changes and stress and trophic/apoptotic effects that appear to either increase with the passage of time or are evident for at least 1 month. In brief, paraquat may be a useful nonspecific means to model widespread stress and inflammatory changes related to PD or age-related disease in general, but not the progressive nature of such diseases.
Collapse
Affiliation(s)
- Zach Dwyer
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Chris Rudyk
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Kyle Farmer
- Department of Neurology, Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA, USA; Department of Neurology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sheryl Beauchamp
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Pragya Shail
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Alexa Derksen
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Teresa Fortin
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Katelyn Ventura
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Carlos Torres
- Department of Radiology, University of Ottawa, Ottawa, Ontario, Canada; Department of Medical Imaging, The Ottawa Hospital, Ottawa, Ontario, Canada; Ottawa Hospital Research (OHRI), Ottawa, Ontario, Canada
| | - Kiara Ayoub
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Shawn Hayley
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada.
| |
Collapse
|
13
|
Role of Oxidative Stress in the Pathogenesis of Amyotrophic Lateral Sclerosis: Antioxidant Metalloenzymes and Therapeutic Strategies. Biomolecules 2021; 11:biom11030437. [PMID: 33809730 PMCID: PMC8002298 DOI: 10.3390/biom11030437] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/12/2021] [Accepted: 03/12/2021] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) affects motor neurons in the cerebral cortex, brainstem and spinal cord and leads to death due to respiratory failure within three to five years. Although the clinical symptoms of this disease were first described in 1869 and it is the most common motor neuron disease and the most common neurodegenerative disease in middle-aged individuals, the exact etiopathogenesis of ALS remains unclear and it remains incurable. However, free oxygen radicals (i.e., molecules containing one or more free electrons) are known to contribute to the pathogenesis of this disease as they very readily bind intracellular structures, leading to functional impairment. Antioxidant enzymes, which are often metalloenzymes, inactivate free oxygen radicals by converting them into a less harmful substance. One of the most important antioxidant enzymes is Cu2+Zn2+ superoxide dismutase (SOD1), which is mutated in 20% of cases of the familial form of ALS (fALS) and up to 7% of sporadic ALS (sALS) cases. In addition, the proper functioning of catalase and glutathione peroxidase (GPx) is essential for antioxidant protection. In this review article, we focus on the mechanisms through which these enzymes are involved in the antioxidant response to oxidative stress and thus the pathogenesis of ALS and their potential as therapeutic targets.
Collapse
|
14
|
Dwyer Z, Chaiquin M, Landrigan J, Ayoub K, Shail P, Rocha J, Childers CL, Storey KB, Philpott DJ, Sun H, Hayley S. The impact of dextran sodium sulphate and probiotic pre-treatment in a murine model of Parkinson's disease. J Neuroinflammation 2021; 18:20. [PMID: 33422110 PMCID: PMC7796536 DOI: 10.1186/s12974-020-02062-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/16/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Recent work has established that Parkinson's disease (PD) patients have an altered gut microbiome, along with signs of intestinal inflammation. This could help explain the high degree of gastric disturbances in PD patients, as well as potentially be linked to the migration of peripheral inflammatory factors into the brain. To our knowledge, this is the first study to examine microbiome alteration prior to the induction of a PD murine model. METHODS We presently assessed whether pre-treatment with the probiotic, VSL #3, or the inflammatory inducer, dextran sodium sulphate (DSS), would influence the PD-like pathology provoked by a dual hit toxin model using lipopolysaccharide (LPS) and paraquat exposure. RESULTS While VSL #3 has been reported to have anti-inflammatory effects, DSS is often used as a model of colitis because of the gut inflammation and the breach of the intestinal barrier that it induces. We found that VSL#3 did not have any significant effects (beyond a blunting of LPS paraquat-induced weight loss). However, the DSS treatment caused marked changes in the gut microbiome and was also associated with augmented behavioral and inflammatory outcomes. In fact, DSS markedly increased taxa belonging to the Bacteroidaceae and Porphyromonadaceae families but reduced those from Rikencellaceae and S24-7, as well as provoking colonic pro-inflammatory cytokine expression, consistent with an inflamed gut. The DSS also increased the impact of LPS plus paraquat upon microglial morphology, along with circulating lipocalin-2 (neutrophil marker) and IL-6. Yet, neither DSS nor VSL#3 influenced the loss of substantia nigra dopamine neurons or the astrocytic and cytoskeleton remodeling protein changes that were provoked by the LPS followed by paraquat treatment. CONCLUSIONS These data suggest that disruption of the intestinal integrity and the associated microbiome can interact with systemic inflammatory events to promote widespread brain-gut changes that could be relevant for PD and at the very least, suggestive of novel neuro-immune communication.
Collapse
Affiliation(s)
- Zach Dwyer
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Melany Chaiquin
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Jeffrey Landrigan
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Kiara Ayoub
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Pragya Shail
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Julianna Rocha
- Department of Immunology, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Christie L Childers
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Kenneth B Storey
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario, M5S 1A8, Canada
| | - Hongyu Sun
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Shawn Hayley
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada.
| |
Collapse
|
15
|
Hussain Z, Thu HE, Elsayed I, Abourehab MAS, Khan S, Sohail M, Sarfraz RM, Farooq MA. Nano-scaled materials may induce severe neurotoxicity upon chronic exposure to brain tissues: A critical appraisal and recent updates on predisposing factors, underlying mechanism, and future prospects. J Control Release 2020; 328:873-894. [PMID: 33137366 DOI: 10.1016/j.jconrel.2020.10.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 01/09/2023]
Abstract
Owing to their tremendous potential, the inference of nano-scaled materials has revolutionized many fields including the medicine and health, particularly for development of various types of targeted drug delivery devices for early prognosis and successful treatment of various diseases, including the brain disorders. Owing to their unique characteristic features, a variety of nanomaterials (particularly, ultra-fine particles (UFPs) have shown tremendous success in achieving the prognostic and therapeutic goals for early prognosis and treatment of various brain maladies such as Alzheimer's disease, Parkinson's disease, brain lymphomas, and other ailments. However, serious attention is needful due to innumerable after-effects of the nanomaterials. Despite their immense contribution in optimizing the prognostic and therapeutic modalities, biological interaction of nanomaterials with various body tissues may produce severe nanotoxicity of different organs including the heart, liver, kidney, lungs, immune system, gastro-intestinal system, skin as well as nervous system. However, in this review, we have primarily focused on nanomaterials-induced neurotoxicity of the brain. Following their translocation into different regions of the brain, nanomaterials may induce neurotoxicity through multiple mechanisms including the oxidative stress, DNA damage, lysosomal dysfunction, inflammatory cascade, apoptosis, genotoxicity, and ultimately necrosis of neuronal cells. Our findings indicated that rigorous toxicological evaluations must be carried out prior to clinical translation of nanomaterials-based formulations to avoid serious neurotoxic complications, which may further lead to develop various neuro-degenerative disorders.
Collapse
Affiliation(s)
- Zahid Hussain
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Research Institute for Medical and Health Sciences (SIMHR), University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Hnin Ei Thu
- Innoscience Research Sdn. Bhd., Suites B-5-7, Level 5, Skypark@ One City, Jalan Ust 25/1, Subang Jaya 47650, Selangor, Malaysia; Department of Pharmacology, Faculty of Medicine, Lincoln University College, Selangor, Malaysia.
| | - Ibrahim Elsayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt; Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy & Thumbay Research Institute for Precision Medicine Gulf Medical University, United Arab Emirates
| | - Mohammed A S Abourehab
- Department of Pharmaceutics, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia; Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Shahzeb Khan
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas, 2409 West University Avenue, PHR 4.116, Austin TX78712, USA; Department of Pharmacy, University of Malakand, Dir Lower, Chakdara, KPK, Pakistan
| | - Mohammad Sohail
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, Pakistan
| | | | - Muhammad Asim Farooq
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, People's Republic of China
| |
Collapse
|
16
|
Endoplasmic reticulum stress-related neuroinflammation and neural stem cells decrease in mice exposure to paraquat. Sci Rep 2020; 10:17757. [PMID: 33082501 PMCID: PMC7576831 DOI: 10.1038/s41598-020-74916-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 09/30/2020] [Indexed: 12/28/2022] Open
Abstract
Paraquat (PQ), a widely used herbicide, could cause neurodegenerative diseases, yet the mechanism remains incompletely understood. This study aimed to investigate the direct effect of PQ on NSC in vivo and its possible mechanism. Adult C57BL/6 mice were subcutaneously injected with 2 mg/kg PQ, 20 mg/kg PQ or vehicle control once a week for 2 weeks, and sacrificed 1 week after the last PQ injection. Furthermore, extra experiments with Tauroursodeoxycholic Acid (TUDCA) intervention were performed to observe the relationship between ER stress, neuroinflammation and the neural stem cell (NSC) impairment. The results showed that 20 mg/kg PQ caused the NSC number decrease in both subgranular zones (SGZ) and subventricular zone (SVZ). Further analysis indicated that the 20 mg/kg PQ suppressed the proliferation of NSC, without affecting the apoptosis. Moreover, 20 mg/kg PQ also induced ER stress in microglia and caused neuroinflammation in SGZ and SVZ. Interestingly, the ER stress inhibitor could simultaneously ameliorate the neuroinflammation and NSC reduction. These data suggested that increased ER stress in microglia might be a possible pathway for PQ-induced neuroinflammation and NSC impairment. That is a previously unknown mechanism for PQ neurotoxicity.
Collapse
|
17
|
Hou L, Zhang L, Hong JS, Zhang D, Zhao J, Wang Q. Nicotinamide Adenine Dinucleotide Phosphate Oxidase and Neurodegenerative Diseases: Mechanisms and Therapy. Antioxid Redox Signal 2020; 33:374-393. [PMID: 31968994 DOI: 10.1089/ars.2019.8014] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Significance: The growing incidence of neurodegenerative diseases significantly impacts the individuals who suffer from these disorders and is a major health concern globally. Although the specific mechanisms of neurodegenerative diseases are still far from being acknowledged, it is becoming clear that oxidative stress and neuroinflammation are critical contributing factors to the progression of neurodegeneration. Thus, it is conceivable that the inhibition of oxidative stress and neuroinflammation may represent promising therapeutic targets for the treatment of neurodegenerative diseases. Recent Advances: Recently, the strategy for neurodegenerative disease therapy has shifted from the use of antioxidants and conventional anti-inflammatory targets to upstream mediators due to the failure of most antioxidants and nonsteroidal anti-inflammatory drugs in clinical trials. Nicotinamide adenine dinucleotide phosphate oxidases (NOXs), a family of superoxide-producing enzyme complexes, have been identified as an upstream factor that controls both oxidative stress and neuroinflammation. Genetic inactivation or pharmacological inhibition of NOX enzymes displays potent neuroprotective effects in a broad spectrum of neurodegenerative disease models. Critical Issues: The detailed mechanisms of how NOX enzymes regulate oxidative stress and neuroinflammation still remain unclear. Moreover, the currently available inhibitors of NOX enzymes exhibit nonspecificity, off-target effects, unsuitable pharmacokinetic properties, and even high toxicity, markedly limiting their potential clinical applications. Future Directions: This review provides novel insights into the roles of NOXs in neurodegenerative pharmacology, and indicates the types of NOX enzyme inhibitors that should be identified and developed as candidates for future applications, which might reveal novel neurodegenerative disease therapies based on NOXs.
Collapse
Affiliation(s)
- Liyan Hou
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, China.,National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| | - Lin Zhang
- Academy of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Jau-Shyong Hong
- Neuropharmacology Section, Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Dan Zhang
- State Key Laboratory of Natural Products and Functions, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Zhao
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| | - Qingshan Wang
- Institute of Toxicology, School of Public Health, Dalian Medical University, Dalian, China.,National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China
| |
Collapse
|
18
|
Hou L, Qu X, Qiu X, Huang R, Zhao X, Wang Q. Integrin CD11b mediates locus coeruleus noradrenergic neurodegeneration in a mouse Parkinson's disease model. J Neuroinflammation 2020; 17:148. [PMID: 32375810 PMCID: PMC7201626 DOI: 10.1186/s12974-020-01823-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 04/22/2020] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The loss of locus coeruleus noradrenergic (LC/NE) neurons in the brainstem is reported in multiple neurodegenerative disorders, including Parkinson's disease (PD). However, the mechanisms remain unclear. Strong evidence suggested that microglia-mediated neuroinflammation contributes to neurodegeneration in PD. We recently recognized integrin CD11b, the α-chain of macrophage antigen complex-1 (Mac-1, also called CR3), as a key regulator for microglial activation. However, whether CD11b is involved in LC/NE neurodegeneration in PD remains to be investigated. METHODS LC/NE neurodegeneration and microglial activation were compared between wild type (WT) and CD11b KO mice after treated with paraquat and maneb, two pesticides that widely used to create PD model. The role of NLRP3 inflammasome in CD11b-mediated microglial dysfunction and LC/NE neurodegeneration was further explored. LC/NE neurodegeneration, microglial phenotype, and NLRP3 inflammasome activation were determined by using Western blot, immunohistochemistry, and RT-PCR technologies. RESULTS Paraquat and maneb co-exposure elevated the expressions of CD11b in the brainstem of mice, and CD11b knockout significantly reduced LC/NE neurodegeneration induced by paraquat and maneb. Mitigated microglial activation and gene expressions of proinflammatory cytokines were also observed in paraquat and maneb-treated CD11b-/- mice. Mechanistically, CD11b-mediated NLRP3 inflammasome activation contributes to paraquat and maneb-induced LC/NE neurodegeneration. Compared with WT controls, CD11b deficiency reduced paraquat and maneb-induced NLRP3 expression, caspase-1 activation, and interleukin-1β production in mice. Furthermore, inhibition of NLRP3 inflammasome by glybenclamide, a sulfonylurea inhibitor of NLRP3 inflammasome, was found to be able to suppress microglial proinflammatory activation and nuclear factor-κB activation induced by paraquat and maneb. Moreover, reduced reactive oxygen species production, NADPH oxidase, and inducible nitric oxide synthase expressions as well as 4-hydroxynonenal and malondialdehyde levels were detected in combined glybenclamide and paraquat and maneb-treated mice compared with paraquat and maneb alone group. Finally, we found that glybenclamide treatment ameliorated LC/NE neurodegeneration and α-synuclein aggregation in paraquat and maneb-treated mice. CONCLUSION Our findings suggested that CD11b mediates LC/NE neurodegeneration through NLRP3 inflammation-dependent microglial proinflammatory activation in a two pesticide-induced mouse PD model, providing a novel insight into the immune pathogenesis of LC/NE neuronal damage in related disorders.
Collapse
Affiliation(s)
- Liyan Hou
- School of Public Health, Dalian Medical University, Dalian, 116044, China
| | - Xingyue Qu
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Xiaofei Qiu
- Qingdao Municipal Center for Disease Control & Prevention/Qingdao Institute of Preventive Medicine, Qingdao, 266033, China.,School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Ruixue Huang
- School of Public Health, Dalian Medical University, Dalian, 116044, China
| | - Xiulan Zhao
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Qingshan Wang
- School of Public Health, Dalian Medical University, Dalian, 116044, China. .,National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, China.
| |
Collapse
|
19
|
Jadavji NM, Murray LK, Emmerson JT, Rudyk CA, Hayley S, Smith PD. Paraquat Exposure Increases Oxidative Stress Within the Dorsal Striatum of Male Mice With a Genetic Deficiency in One-carbon Metabolism. Toxicol Sci 2020; 169:25-33. [PMID: 30726997 DOI: 10.1093/toxsci/kfz034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Paraquat is an herbicide that is commonly used worldwide. Exposure to paraquat results in Parkinson's disease (PD)-like symptoms including dopaminergic cell loss. Nutrition has also been linked in the pathogenesis of PD, such as reduced levels of folic acid, a B-vitamin, and component of one-carbon metabolism. Within one-carbon metabolism, methylenetetrahydrofolate reductase (MTHFR) catalyzes the irreversible conversion of 5, 10-methylenetetrahydrofolate to 5-methyltetrahydrofolate. A polymorphism in MTHFR (677 C&→T) has been reported in 5%-15% of North American and European human populations. The MTHFR polymorphism is also prevalent in PD patients. The goal of this study was to investigate the impact of paraquat-induced PD-like pathology in the context of reduced levels of MTHFR. Three-month-old male Mthfr+/- mice, which model the MTHFR polymorphism observed in humans, were administered intraperitoneal injections of paraquat (10 mg/kg) or saline 6 times over 3 weeks. At the end of paraquat treatment, motor and memory function were assessed followed by collection of brain tissue for biochemical analysis. Mthfr+/- mice treated with paraquat showed impaired motor function. There was increased microglial activation within the substantia nigra (SN) of Mthfr+/- mice treated with paraquat. Additionally, all Mthfr+/- mice that were treated with paraquat showed increased oxidative stress within the dorsal striatum, but not the SN. The present results show that paraquat exposure increases PD-like pathology in mice deficient in one-carbon metabolism.
Collapse
Affiliation(s)
- Nafisa M Jadavji
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Lauren K Murray
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Joshua T Emmerson
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Chris A Rudyk
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Shawn Hayley
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| | - Patrice D Smith
- Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada
| |
Collapse
|
20
|
Vegeto E, Villa A, Della Torre S, Crippa V, Rusmini P, Cristofani R, Galbiati M, Maggi A, Poletti A. The Role of Sex and Sex Hormones in Neurodegenerative Diseases. Endocr Rev 2020; 41:5572525. [PMID: 31544208 PMCID: PMC7156855 DOI: 10.1210/endrev/bnz005] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/20/2019] [Indexed: 12/11/2022]
Abstract
Neurodegenerative diseases (NDs) are a wide class of disorders of the central nervous system (CNS) with unknown etiology. Several factors were hypothesized to be involved in the pathogenesis of these diseases, including genetic and environmental factors. Many of these diseases show a sex prevalence and sex steroids were shown to have a role in the progression of specific forms of neurodegeneration. Estrogens were reported to be neuroprotective through their action on cognate nuclear and membrane receptors, while adverse effects of male hormones have been described on neuronal cells, although some data also suggest neuroprotective activities. The response of the CNS to sex steroids is a complex and integrated process that depends on (i) the type and amount of the cognate steroid receptor and (ii) the target cell type-either neurons, glia, or microglia. Moreover, the levels of sex steroids in the CNS fluctuate due to gonadal activities and to local metabolism and synthesis. Importantly, biochemical processes involved in the pathogenesis of NDs are increasingly being recognized as different between the two sexes and as influenced by sex steroids. The aim of this review is to present current state-of-the-art understanding on the potential role of sex steroids and their receptors on the onset and progression of major neurodegenerative disorders, namely, Alzheimer's disease, Parkinson's diseases, amyotrophic lateral sclerosis, and the peculiar motoneuron disease spinal and bulbar muscular atrophy, in which hormonal therapy is potentially useful as disease modifier.
Collapse
Affiliation(s)
- Elisabetta Vegeto
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Scienze Farmaceutiche (DiSFarm), Università degli Studi di Milano, Italy
| | - Alessandro Villa
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Scienze della Salute (DiSS), Università degli Studi di Milano, Italy
| | - Sara Della Torre
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Scienze Farmaceutiche (DiSFarm), Università degli Studi di Milano, Italy
| | - Valeria Crippa
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Eccellenza di Scienze Farmacologiche e Biomolecolari (DiSFeB), Università degli Studi di Milano, Italy
| | - Paola Rusmini
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Eccellenza di Scienze Farmacologiche e Biomolecolari (DiSFeB), Università degli Studi di Milano, Italy
| | - Riccardo Cristofani
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Eccellenza di Scienze Farmacologiche e Biomolecolari (DiSFeB), Università degli Studi di Milano, Italy
| | - Mariarita Galbiati
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Eccellenza di Scienze Farmacologiche e Biomolecolari (DiSFeB), Università degli Studi di Milano, Italy
| | - Adriana Maggi
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Scienze Farmaceutiche (DiSFarm), Università degli Studi di Milano, Italy
| | - Angelo Poletti
- Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Italy.,Dipartimento di Eccellenza di Scienze Farmacologiche e Biomolecolari (DiSFeB), Università degli Studi di Milano, Italy
| |
Collapse
|
21
|
Sn S, Pandurangi J, Murumalla R, Dj V, Garimella L, Acharya A, Rai S, Paul A, Yarreiphang H, Pillai MS, Giridharan M, Clement JP, Alladi PA, Saiyed T, Manjithaya R. Small molecule modulator of aggrephagy regulates neuroinflammation to curb pathogenesis of neurodegeneration. EBioMedicine 2019; 50:260-273. [PMID: 31727601 PMCID: PMC6921191 DOI: 10.1016/j.ebiom.2019.10.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 10/13/2019] [Accepted: 10/20/2019] [Indexed: 12/16/2022] Open
Abstract
Background Plethora of efforts fails to yield a single drug to reverse the pathogenesis of Parkinson's disease (PD) and related α-synucleopathies. Methods Using chemical biology, we identified a small molecule inhibitor of c-abl kinase, PD180970 that could potentially clear the toxic protein aggregates. Genetic, molecular, cell biological and immunological assays were performed to understand the mechanism of action. In vivo preclinical disease model of PD was used to assess its neuroprotection efficacy. Findings In this report, we show the ability of a small molecule inhibitor of tyrosine kinases, PD180970, to induce autophagy (cell lines and mice midbrain) in an mTOR-independent manner and ameliorate the α-synuclein mediated toxicity. PD180970 also exerts anti-neuroinflammatory potential by inhibiting the release of proinflammatory cytokines such as IL-6 (interleukin-6) and MCP-1 (monocyte chemoattractant protein-1) through reduction of TLR-4 (toll like receptor-4) mediated NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) activation. In vivo studies show that PD180970 is neuroprotective by degrading the toxic protein oligomers through induction of autophagy and subsiding the microglial activation. Interpretation These protective mechanisms ensure the negation of Parkinson's disease related motor impairments. Fund This work was supported by Wellcome Trust/DBT India Alliance Intermediate Fellowship (500159-Z-09-Z), DST-SERB grant (EMR/2015/001946), DBT (BT/INF/22/SP27679/2018) and JNCASR intramural funds to RM, and SERB, DST (SR/SO/HS/0121/2012) to PAA, and DST-SERB (SB/YS/LS-215/2013) to JPC and BIRAC funding to ETA C-CAMP.
Collapse
Affiliation(s)
- Suresh Sn
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Centre for Brain Research (CBR), IISc, Bangalore, India
| | - Janhavi Pandurangi
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Ravi Murumalla
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Vidyadhara Dj
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Yale University, USA
| | - Lakshmi Garimella
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Achyuth Acharya
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Shashank Rai
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Abhik Paul
- Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Haorei Yarreiphang
- Department of Neurophysiology, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Malini S Pillai
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Mridhula Giridharan
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - James P Clement
- Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Phalguni Anand Alladi
- Department of Neurophysiology, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Taslimarif Saiyed
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Ravi Manjithaya
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India.
| |
Collapse
|
22
|
Rai SN, Zahra W, Singh SS, Birla H, Keswani C, Dilnashin H, Rathore AS, Singh R, Singh RK, Singh SP. Anti-inflammatory Activity of Ursolic Acid in MPTP-Induced Parkinsonian Mouse Model. Neurotox Res 2019; 36:452-462. [PMID: 31016688 DOI: 10.1007/s12640-019-00038-6] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 12/21/2022]
Abstract
Neuroinflammation plays an important role in the progression of Parkinson's disease (PD) and hence may represent a target for treatment. The drugs used currently for PD only provide symptomatic relief and have adverse effects in addition to their inability in preventing degeneration of neurons. Flavonoids show potent antioxidant and anti-inflammatory activities which is very valuable for the health of human beings. Thus, in the present study, we have tried to explore the anti-inflammatory activity of orally given ursolic acid (UA) (25 mg/kg bwt), a pentacyclic triterpenoid in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-intoxicated mouse model. Significant severe oxidative stress and biochemical alterations have been seen in Parkinsonian mice after MPTP intoxication. Whereas, UA administration has significantly rescued the harmful consequence of MPTP intoxication. Ionized calcium-binding adaptor molecule 1 (Iba1), tumor necrosis factor-alpha (TNF-α), and nuclear transcription factor-κB (NF-κB) were seen to be altered in the substantia nigra pars compacta (SNpc) of MPTP-intoxicated mice through immunohistochemical studies. The changes in the expression level of these parameters primarily suggest increased inflammatory responses in MPTP-intoxicated mice as compared with the control. However, UA have significantly reduced these inflammatory parameters (Iba1 and TNF-α) along with transcription factor NF-κB, which regulates these inflammatory parameters and thus have inhibited MPTP-induced neuroinflammation. The immunoreactivity of tyrosine hydroxylase (TH) was considerably increased by UA treatment in the SNpc of Parkinsonian mice. The neuroinflammation and neurodegeneration along with impairments in biochemical and behavioral parameters were found to be reversed on treatment with UA. Thus, UA has shown potent anti-inflammatory activity by preventing the degeneration of dopaminergic neurons from MPTP-induced Parkinsonian mice.
Collapse
Affiliation(s)
- Sachchida Nand Rai
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Walia Zahra
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Saumitra Sen Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Hareram Birla
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Chetan Keswani
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Hagera Dilnashin
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Aaina Singh Rathore
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rajan Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rakesh K Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Surya Pratap Singh
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| |
Collapse
|
23
|
Rudyk C, Dwyer Z, McNeill J, Salmaso N, Farmer K, Prowse N, Hayley S. Chronic unpredictable stress influenced the behavioral but not the neurodegenerative impact of paraquat. Neurobiol Stress 2019; 11:100179. [PMID: 31304199 PMCID: PMC6599913 DOI: 10.1016/j.ynstr.2019.100179] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/03/2019] [Accepted: 05/30/2019] [Indexed: 01/09/2023] Open
Abstract
The impact of psychological stressors on the progression of motor and non-motor disturbances observed in Parkinson's disease (PD) has received little attention. Given that PD likely results from many different environmental “hits”, we were interested in whether a chronic unpredictable stressor regimen would act additively or possibly even synergistically to augment the impact of the toxicant, paraquat, which has previously been linked to PD. Our findings support the contention that paraquat itself acted as a systemic stressor, with the pesticide increasing plasma corticosterone, as well as altering glucocorticoid receptor (GR) expression in the hippocampus. Furthermore, stressed mice that also received paraquat displayed synergistic motor coordination impairment on a rotarod test and augmented signs of anhedonia (sucrose preference test). The individual stressor and paraquat treatments also caused a range of non-motor (e.g. open field, Y and plus mazes) deficits, but there were no signs of an interaction (neither additive nor synergistic) between the insults. Similarly, paraquat caused the expected loss of substantia nigra dopamine neurons and microglial activation, but this effect was not further influenced by the chronic stressor. Taken together, these results indicate that paraquat has many effects comparable to that of a more traditional stressor and that at least some behavioral measures (i.e. sucrose preference and rotarod) are augmented by the combined pesticide and stress treatments. Thus, although psychological stressors might not necessarily increase the neurodegenerative effects of the toxicant exposure, they may promote co-morbid behaviors pathology. Paraquat induced behavioral and neurochemical alterations similar to those induced by a chronic unpredictable stressor. Chronic unpredictable stress did not influence the degeneration of midbrain dopamine neurons or microglia activation. The paraquat and chronic stressor exposure resulted in augmented motor impairment and anhedonic-like behavior.
Collapse
Key Words
- AAR, alternate arm return
- ANOVA, analysis of variance
- BCA, bicinchoninic acid
- BDNF, brain derived neurotrophic factor
- CUS, chronic unpredictable stress
- Cytokine
- EDTA, ethylenediaminetetraacetic acid
- ELISA, enzyme-linked immunosorbent assay
- EPM, elevated plus maze
- FST, forced swim test
- GR, glucocorticoid receptor
- HPA, hypothalamus-pituitary adrenal
- IBA1, ionized calcium-binding adapter molecule 1
- Inflammatory
- MMx, Micromax
- Microglia
- PB, phosphate buffer
- PBS, phosphate buffered saline
- PD, Parkinson's disease
- PFA, paraformaldehyde
- PVDF, polyvinylidene difluoride
- Parkinson's
- RIPA, Radio Immuno Precipitation Assay
- RR, rotarod
- SAB, spontaneous alternation behavior
- SAR, same arm return
- SDS, sodium dodecyl sulphate
- SNc, substantia nigra pars compacta
- SPT, sucrose preference test
- Stress
- TH, tyrosine hydroxylase
- Toxicity
- VTA, ventral tegmental area
- pGR, phosphate glucocorticoid receptor
Collapse
Affiliation(s)
- Chris Rudyk
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| | - Zach Dwyer
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| | - Jessica McNeill
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| | - Natalina Salmaso
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| | - Kyle Farmer
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6.,Department of Neurology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Natalie Prowse
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| | - Shawn Hayley
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, Canada, K1S 5B6
| |
Collapse
|
24
|
Subhramanyam CS, Wang C, Hu Q, Dheen ST. Microglia-mediated neuroinflammation in neurodegenerative diseases. Semin Cell Dev Biol 2019; 94:112-120. [PMID: 31077796 DOI: 10.1016/j.semcdb.2019.05.004] [Citation(s) in RCA: 459] [Impact Index Per Article: 91.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/07/2019] [Accepted: 05/07/2019] [Indexed: 12/11/2022]
Abstract
Microglia, being the resident immune cells of the central nervous system, play an important role in maintaining tissue homeostasis and contributes towards brain development under normal conditions. However, when there is a neuronal injury or other insult, depending on the type and magnitude of stimuli, microglia will be activated to secrete either proinflammatory factors that enhance cytotoxicity or anti-inflammatory neuroprotective factors that assist in wound healing and tissue repair. Excessive microglial activation damages the surrounding healthy neural tissue, and the factors secreted by the dead or dying neurons in turn exacerbate the chronic activation of microglia, causing progressive loss of neurons. It is the case observed in many neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, Huntington's disease and amyotrophic lateral sclerosis. This review gives a detailed account of the microglia-mediated neuroinflammation in various neurodegenerative diseases. Hence, resolving chronic inflammation mediated by microglia bears great promise as a novel treatment strategy to reduce neuronal damage and to foster a permissive environment for further regeneration effort.
Collapse
Affiliation(s)
| | - Cheng Wang
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, 4 Medical Drive, 117594, Singapore
| | - Qidong Hu
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, 4 Medical Drive, 117594, Singapore.
| | - S Thameem Dheen
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, 4 Medical Drive, 117594, Singapore.
| |
Collapse
|
25
|
Kanthasamy A, Jin H, Charli A, Vellareddy A, Kanthasamy A. Environmental neurotoxicant-induced dopaminergic neurodegeneration: a potential link to impaired neuroinflammatory mechanisms. Pharmacol Ther 2019; 197:61-82. [PMID: 30677475 PMCID: PMC6520143 DOI: 10.1016/j.pharmthera.2019.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the increased incidence of neurodegenerative diseases worldwide, Parkinson's disease (PD) represents the second-most common neurodegenerative disease. PD is a progressive multisystem neurodegenerative disorder characterized by a marked loss of nigrostriatal dopaminergic neurons and the formation of Lewy pathology in diverse brain regions. Although the mechanisms underlying dopaminergic neurodegeneration remain poorly characterized, data from animal models and postmortem studies have revealed that heightened inflammatory responses mediated via microglial and astroglial activation and the resultant release of proinflammatory factors may act as silent drivers of neurodegeneration. In recent years, numerous studies have demonstrated a positive association between the exposure to environmental neurotoxicants and the etiology of PD. Although it is unclear whether neuroinflammation drives pesticide-induced neurodegeneration, emerging evidence suggests that the failure to dampen neuroinflammatory mechanisms may account for the increased vulnerability to pesticide neurotoxicity. Furthermore, recent studies provide additional evidence that shifts the focus from a neuron-centric view to glial-associated neurodegeneration following pesticide exposure. In this review, we propose to summarize briefly the possible factors that regulate neuroinflammatory processes during environmental neurotoxicant exposure with a focus on the potential roles of mitochondria-driven redox mechanisms. In this context, a critical discussion of the data obtained from experimental research and possible epidemiological studies is included. Finally, we hope to provide insights on the pivotal role of exosome-mediated intercellular transmission of aggregated proteins in microglial activation response and the resultant dopaminergic neurodegeneration after exposure to pesticides. Collectively, an improved understanding of glia-mediated neuroinflammatory signaling might provide novel insights into the mechanisms that contribute to neurodegeneration induced by environmental neurotoxicant exposure.
Collapse
Affiliation(s)
- Arthi Kanthasamy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA.
| | - Huajun Jin
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Adhithiya Charli
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Anantharam Vellareddy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Anumantha Kanthasamy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| |
Collapse
|
26
|
Tetrahydroxystilbene Glucoside Produces Neuroprotection against 6-OHDA-Induced Dopamine Neurotoxicity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7927568. [PMID: 29576855 PMCID: PMC5821944 DOI: 10.1155/2018/7927568] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 07/07/2017] [Accepted: 12/11/2017] [Indexed: 01/15/2023]
Abstract
Parkinson's disease (PD) was one of the most common neurodegenerative diseases with a slow and progressive loss of dopamine (DA) neurons in the midbrain substantia nigra (SN). Neuroinflammation was identified to be an important contributor to PD pathogenesis with the hallmark of microglia activation. Tetrahydroxystilbene glucoside (TSG) was the main active component extracted from Polygonum multiflorum and held amounts of pharmacological activities including antioxidant, free radical-scavenging, anti-inflammation, and cardioprotective properties. Recent studies demonstrated that TSG exerted neuroprotection from several neurodegenerative disease models. However, the underlying mechanisms were not completely elucidated. In the present study, rat nigral stereotaxic injection of 6-hydroxydopamine- (6-OHDA-) elicited DA neuronal injury was performed to investigate TSG-mediated neuroprotection on DA neurons. In addition, primary rat midbrain neuron-glia cocultures were applied to explore the mechanisms underlying TSG-exerted neuroprotection. Results showed that daily intraperitoneal injection of TSG for 14 consecutive days significantly protected DA neurons from 6-OHDA-induced neurotoxicity and suppressed microglia activation. Similar neuroprotection was shown in primary neuron-glia cocultures. In vitro studies further demonstrated that TSG inhibited microglia activation and subsequent release of proinflammatory factors. Moreover, TSG-mediated neuroprotection was closely related with the inactivation of mitogen-activated protein kinase (MAPK) signaling pathway. Together, TSG protects DA neurons from 6-OHDA-induced neurotoxicity via the inhibition of microglia-elicited neuroinflammation. These findings suggest that TSG might hold potential therapeutic effects on PD.
Collapse
|
27
|
Helley MP, Pinnell J, Sportelli C, Tieu K. Mitochondria: A Common Target for Genetic Mutations and Environmental Toxicants in Parkinson's Disease. Front Genet 2017; 8:177. [PMID: 29204154 PMCID: PMC5698285 DOI: 10.3389/fgene.2017.00177] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/01/2017] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a devastating neurological movement disorder. Since its first discovery 200 years ago, genetic and environmental factors have been identified to play a role in PD development and progression. Although genetic studies have been the predominant driving force in PD research over the last few decades, currently only a small fraction of PD cases can be directly linked to monogenic mutations. The remaining cases have been attributed to other risk associated genes, environmental exposures and gene-environment interactions, making PD a multifactorial disorder with a complex etiology. However, enormous efforts from global research have yielded significant insights into pathogenic mechanisms and potential therapeutic targets for PD. This review will highlight mitochondrial dysfunction as a common pathway involved in both genetic mutations and environmental toxicants linked to PD.
Collapse
Affiliation(s)
- Martin P. Helley
- Department of Environmental Health Sciences, Florida International University, Miami, FL, United States
| | - Jennifer Pinnell
- Department of Environmental Health Sciences, Florida International University, Miami, FL, United States
- Peninsula Schools of Medicine and Dentistry, Plymouth University, Plymouth, United Kingdom
| | - Carolina Sportelli
- Department of Environmental Health Sciences, Florida International University, Miami, FL, United States
- Peninsula Schools of Medicine and Dentistry, Plymouth University, Plymouth, United Kingdom
| | - Kim Tieu
- Department of Environmental Health Sciences, Florida International University, Miami, FL, United States
| |
Collapse
|
28
|
Belarbi K, Cuvelier E, Destée A, Gressier B, Chartier-Harlin MC. NADPH oxidases in Parkinson's disease: a systematic review. Mol Neurodegener 2017; 12:84. [PMID: 29132391 PMCID: PMC5683583 DOI: 10.1186/s13024-017-0225-5] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/25/2017] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a progressive movement neurodegenerative disease associated with a loss of dopaminergic neurons in the substantia nigra of the brain. Oxidative stress, a condition that occurs due to imbalance in oxidant and antioxidant status, is thought to play an important role in dopaminergic neurotoxicity. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases are multi-subunit enzymatic complexes that generate reactive oxygen species as their primary function. Increased immunoreactivities for the NADPH oxidases catalytic subunits Nox1, Nox2 and Nox4 have been reported in the brain of PD patients. Furthermore, knockout or genetic inactivation of NADPH oxidases exert a neuroprotective effect and reduce detrimental aspects of pathology in experimental models of the disease. However, the connections between NADPH oxidases and the biological processes believed to contribute to neuronal death are not well known. This review provides a comprehensive summary of our current understanding about expression and physiological function of NADPH oxidases in neurons, microglia and astrocytes and their pathophysiological roles in PD. It summarizes the findings supporting the role of both microglial and neuronal NADPH oxidases in cellular disturbances associated with PD such as neuroinflammation, alpha-synuclein accumulation, mitochondrial and synaptic dysfunction or disruption of the autophagy-lysosome system. Furthermore, this review highlights different steps that are essential for NADPH oxidases enzymatic activity and pinpoints major obstacles to overcome for the development of effective NADPH oxidases inhibitors for PD.
Collapse
Affiliation(s)
- Karim Belarbi
- University Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc - Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000, Lille, France
| | - Elodie Cuvelier
- University Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc - Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000, Lille, France
| | - Alain Destée
- University Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc - Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000, Lille, France
| | - Bernard Gressier
- University Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc - Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000, Lille, France
| | - Marie-Christine Chartier-Harlin
- University Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc - Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, F-59000, Lille, France. .,Inserm UMR S-1172 Team "Early stages of Parkinson's Disease", 1 Place de Verdun, 59006, Lille, France.
| |
Collapse
|
29
|
Shen Y, Guo X, Han C, Wan F, Ma K, Guo S, Wang L, Xia Y, Liu L, Lin Z, Huang J, Xiong N, Wang T. The implication of neuronimmunoendocrine (NIE) modulatory network in the pathophysiologic process of Parkinson's disease. Cell Mol Life Sci 2017; 74:3741-3768. [PMID: 28623510 PMCID: PMC11107509 DOI: 10.1007/s00018-017-2549-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 05/23/2017] [Accepted: 05/29/2017] [Indexed: 01/11/2023]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder implicitly marked by the substantia nigra dopaminergic neuron degeneration and explicitly characterized by the motor and non-motor symptom complexes. Apart from the nigrostriatal dopamine depletion, the immune and endocrine study findings are also frequently reported, which, in fact, have helped to broaden the symptom spectrum and better explain the pathogenesis and progression of PD. Nevertheless, based on the neural, immune, and endocrine findings presented above, it is still difficult to fully recapitulate the pathophysiologic process of PD. Therefore, here, in this review, we have proposed the neuroimmunoendocrine (NIE) modulatory network in PD, aiming to achieve a more comprehensive interpretation of the pathogenesis and progression of this disease. As a matter of fact, in addition to the classical motor symptoms, NIE modulatory network can also underlie the non-motor symptoms such as gastrointestinal, neuropsychiatric, circadian rhythm, and sleep disorders in PD. Moreover, the dopamine (DA)-melatonin imbalance in the retino-diencephalic/mesencephalic-pineal axis also provides an alternative explanation for the motor complications in the process of DA replacement therapy. In conclusion, the NIE network can be expected to deepen our understanding and facilitate the multi-dimensional management and therapy of PD in future clinical practice.
Collapse
Affiliation(s)
- Yan Shen
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Xingfang Guo
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Chao Han
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Fang Wan
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Kai Ma
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Shiyi Guo
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Luxi Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Yun Xia
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Ling Liu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Zhicheng Lin
- Division of Alcohol and Drug Abuse, Department of Psychiatry, and Mailman Neuroscience Research Center, McLean Hospital, Harvard Medical School, Belmont, MA, 02478, USA
| | - Jinsha Huang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Nian Xiong
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China
| | - Tao Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei, China.
| |
Collapse
|
30
|
Abstract
Immune control is associated with nigrostriatal neuroprotection for Parkinson's disease (PD); though its direct cause and effect relationships have not yet been realized and modulating the immune system for therapeutic gain has been openly discussed. While the pathobiology of PD remains in study, neuroinflammation is thought to speed nigrostriatal degeneration. The neuroinflammatory cascade associated with PD begins with aggregation of misfolded or post-translationally modified α-synuclein (α-syn). Such aggregation results in neuronal cell death and the presence of chronically activated glia (microglia and astroglia), leading to the production of proinflammatory cytokines like tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), IL-6, and enzymes such as nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and cyclooxygenase-2 (COX-2). These changes in the glial phenotype can affect the central nervous system (CNS) microenvironment by producing a pro-inflammatory milieu that speeds PD pathogenesis. Mucuna pruriens (Mp) is the most popular drug in Ayurveda, the Indian system of medicine. Several reports have suggested that it possesses analgesic, anti-inflammatory, anti-neoplastic, anti-epileptic and anti-microbial activities. Mp contain L-DOPA and ursolic acid which has an anti-inflammatory property. There are very few literatures which show the immunomodulatory activity of Mp in PD, several researchers have tried to work on the immunomodulatory activity of Mp in some other diseases. The results of several studies show that Mp modulate the immune components like TNF-α, IL-6, IFN-λ, IL-1β, iNOS and IL-2 in the CNS. It also modulates the activity of the transcription factor NF-kB which plays an important role in the progression of the PD. Thus, by altering these cytokines or transcription factors, Mp protects or prevents the progression of PD. Thus in this review we try to explore the immunomodulatory activity of Mp in PD.
Collapse
|
31
|
Multifactorial theory applied to the neurotoxicity of paraquat and paraquat-induced mechanisms of developing Parkinson's disease. J Transl Med 2016; 96:496-507. [PMID: 26829122 DOI: 10.1038/labinvest.2015.161] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 10/07/2015] [Accepted: 10/12/2015] [Indexed: 11/08/2022] Open
Abstract
Laboratory studies involving repeated exposure to paraquat (PQ) in different animal models can induce many of the pathological features of Parkinson's disease (PD), such as the loss of dopaminergic neurons in the nigrostriatal dopamine system. Epidemiological studies identify an increased risk of developing PD in human populations living in areas where PQ exposure is likely to occur and among workers lacking appropriate protective equipment. The mechanisms involved in developing PD may not be due to any single cause, but rather a multifactorial situation may exist where PQ exposure may cause PD in some circumstances. Multifactorial theory is adopted into this review that includes a number of sub-cellular mechanisms to explain the pathogenesis of PD. The theory is placed into an environmental context of chronic low-dose exposure to PQ that consequently acts as an oxidative stress inducer. Oxidative stress and the metabolic processes of PQ-inducing excitotoxicity, α-synuclein aggregate formation, autophagy, alteration of dopamine catabolism, and inactivation of tyrosine hydroxylase are positioned as causes for the loss of dopaminergic cells. The environmental context and biochemistry of PQ in soils, water, and organisms is also reviewed to identify potential routes that can lead to chronic rates of low-dose exposure that would replicate the type of response that is observed in animal models, epidemiological studies, and other types of laboratory investigations involving PQ exposure. The purpose of this review is to synthesize key relations and summarize hypotheses linking PD to PQ exposure by using the multifactorial approach. Recommendations are given to integrate laboratory methods to the environmental context as a means to improve on experimental design. The multifactorial approach is necessary for conducting valid tests of causal relations, for understanding of potential relations between PD and PQ exposure, and may prevent further delay in solving what has proven to be an evasive etiological problem.
Collapse
|
32
|
Choi J, Polcher A, Joas A. Systematic literature review on Parkinson's disease and Childhood Leukaemia and mode of actions for pesticides. ACTA ACUST UNITED AC 2016. [DOI: 10.2903/sp.efsa.2016.en-955] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
33
|
Liu Z, Song G, Zou C, Liu G, Wu W, Yuan T, Liu X. Acrylamide induces mitochondrial dysfunction and apoptosis in BV-2 microglial cells. Free Radic Biol Med 2015; 84:42-53. [PMID: 25817051 DOI: 10.1016/j.freeradbiomed.2015.03.013] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 10/23/2022]
Abstract
Acrylamide (ACR), a potent neurotoxin, can be produced during food processing at high temperature. This study examined the redox-dependent apoptotic and inflammatory responses of ACR in an immortalized mouse microglia cell line BV2. The exposure of BV2 cells to ACR reduced cell viability and induced apoptosis in a concentration-dependent manner. ACR impaired cell energy metabolism by decreasing mitochondrial respiration, anaerobic glycolysis, and lowering expression of the complex I, III, and IV subunits. Mitochondrial dysfunction was associated with a decrease of the mitochondrial membrane potential and the Bcl-2/Bax ratio, thus resulting in activation of the mitochondrion-driven apoptotic signaling. This was accompanied by (a) the modulation of redox-sensitive signaling, suppressed Akt activation and increased JNK and p38 activation, and (b) increased expression of NFκB and downstream inducible nitric oxide synthase (iNOS) and nitric oxide generation, thus supporting indirectly a proinflammatory effect of ACR. Nrf2 expression was also increased but not its translocation to the nucleus. Expectedly, the electrophilic attack of ACR on GSH resulted in substantial loss of GSH with a minor GSSG formation. These changes in the cell׳s redox status elicited by ACR resulted in increased H2O2 formation. The changes in mitochondrial functionality and complex subunit expression caused by ACR were reversed by N-acetyl-L-cysteine (NAC). Likewise, NAC restored the cell׳s redox status by increasing GSH levels with concomitant attenuation of H2O2 generation; these effects resulted in decreased apoptotic cell death and inflammatory responses. ACR-mediated mitochondrial dysfunction along with a more oxidized redox status seems to be critical events leading to activation of the intrinsic apoptotic pathway and inflammatory responses.
Collapse
Affiliation(s)
- Zhigang Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China; Pharmacology & Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Ge Song
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Chen Zou
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Gongguan Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Wanqiang Wu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Tian Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
| |
Collapse
|
34
|
Kim BW, Koppula S, Kumar H, Park JY, Kim IW, More SV, Kim IS, Han SD, Kim SK, Yoon SH, Choi DK. α-Asarone attenuates microglia-mediated neuroinflammation by inhibiting NF kappa B activation and mitigates MPTP-induced behavioral deficits in a mouse model of Parkinson's disease. Neuropharmacology 2015; 97:46-57. [PMID: 25983275 DOI: 10.1016/j.neuropharm.2015.04.037] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 04/28/2015] [Accepted: 04/29/2015] [Indexed: 12/21/2022]
Abstract
The selective loss of dopaminergic neurons in Parkinson's disease (PD) is associated with microglial activation. Therefore, the importance of early therapeutic intervention to inhibit microglial activation would be an effective strategy to alleviate the progression of PD. α-Asarone, an active compound found in Araceae and Annonaceae plant species has been used to improve various disease conditions including central nervous system disorders. In the present study the in vitro and in vivo therapeutic effects of α-asarone isolated from the rhizome of Acorus gramineus Solander was evaluated on microglia-mediated neuroinflammation and neuroprotection. Lipopolysaccharide (LPS)-stimulated BV-2 microglial cells were used to evaluate in vitro effects. 1-methyl-4 phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced mouse model of PD was developed to study the neuroprotective effects of α-asarone in vivo. The results indicated that α-asarone significantly attenuated the LPS-stimulated increase in neuroinflammatory responses and suppressed pro-inflammatory cytokine production in BV-2 cells. Mechanistic study revealed that α-asarone inhibited the LPS-stimulated activation via regulation of nuclear factor kappa-B by blocking degradation of inhibitor kappa B-alpha signaling in BV-2 microglial cells. In in vivo studies, MPTP intoxication to mice resulted in brain microglial activation and significant behavioral deficits. Prophylactic treatment with α-asarone suppressed microglial activation and attenuated PD-like behavioral impairments as assessed by the Y-maze and pole tests. Taken together, these data demonstrate that α-asarone is a promising neuroprotective agent that should be further evaluated and developed for future prevention and treatment of microglia-mediated neuroinflammatory conditions including PD.
Collapse
Affiliation(s)
- Byung-Wook Kim
- Department of Biotechnology, Konkuk University, 380-701, South Korea
| | - Sushruta Koppula
- Department of Biotechnology, Konkuk University, 380-701, South Korea
| | - Hemant Kumar
- Department of Biotechnology, Konkuk University, 380-701, South Korea
| | - Ju-Young Park
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, South Korea
| | - Il-Woung Kim
- Department of Biomedical Chemistry, Konkuk University, 380-701, South Korea
| | - Sandeep V More
- Department of Biotechnology, Konkuk University, 380-701, South Korea
| | - In-Su Kim
- Department of Biotechnology, Konkuk University, 380-701, South Korea
| | - Sang-Don Han
- Department of Neurology, School of Medicine, Konkuk University, 380-704, South Korea
| | - Si-Kwan Kim
- Department of Biomedical Chemistry, Konkuk University, 380-701, South Korea
| | - Sung-Hwa Yoon
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, South Korea
| | - Dong-Kug Choi
- Department of Biotechnology, Konkuk University, 380-701, South Korea.
| |
Collapse
|
35
|
Chin-Chan M, Navarro-Yepes J, Quintanilla-Vega B. Environmental pollutants as risk factors for neurodegenerative disorders: Alzheimer and Parkinson diseases. Front Cell Neurosci 2015; 9:124. [PMID: 25914621 PMCID: PMC4392704 DOI: 10.3389/fncel.2015.00124] [Citation(s) in RCA: 344] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 03/17/2015] [Indexed: 12/21/2022] Open
Abstract
Neurodegenerative diseases including Alzheimer (AD) and Parkinson (PD) have attracted attention in last decades due to their high incidence worldwide. The etiology of these diseases is still unclear; however the role of the environment as a putative risk factor has gained importance. More worryingly is the evidence that pre- and post-natal exposures to environmental factors predispose to the onset of neurodegenerative diseases in later life. Neurotoxic metals such as lead, mercury, aluminum, cadmium and arsenic, as well as some pesticides and metal-based nanoparticles have been involved in AD due to their ability to increase beta-amyloid (Aβ) peptide and the phosphorylation of Tau protein (P-Tau), causing senile/amyloid plaques and neurofibrillary tangles (NFTs) characteristic of AD. The exposure to lead, manganese, solvents and some pesticides has been related to hallmarks of PD such as mitochondrial dysfunction, alterations in metal homeostasis and aggregation of proteins such as α-synuclein (α-syn), which is a key constituent of Lewy bodies (LB), a crucial factor in PD pathogenesis. Common mechanisms of environmental pollutants to increase Aβ, P-Tau, α-syn and neuronal death have been reported, including the oxidative stress mainly involved in the increase of Aβ and α-syn, and the reduced activity/protein levels of Aβ degrading enzyme (IDE)s such as neprilysin or insulin IDE. In addition, epigenetic mechanisms by maternal nutrient supplementation and exposure to heavy metals and pesticides have been proposed to lead phenotypic diversity and susceptibility to neurodegenerative diseases. This review discusses data from epidemiological and experimental studies about the role of environmental factors in the development of idiopathic AD and PD, and their mechanisms of action.
Collapse
|
36
|
Kumar V, Singh BK, Chauhan AK, Singh D, Patel DK, Singh C. Minocycline Rescues from Zinc-Induced Nigrostriatal Dopaminergic Neurodegeneration: Biochemical and Molecular Interventions. Mol Neurobiol 2015; 53:2761-2777. [PMID: 25764516 DOI: 10.1007/s12035-015-9137-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 02/22/2015] [Indexed: 12/29/2022]
Abstract
Accumulation of zinc (Zn) in dopaminergic neurons is implicated in Parkinson's disease (PD), and microglial activation plays a critical role in toxin-induced Parkinsonism. Oxidative stress is accused in Zn-induced dopaminergic neurodegeneration; however, its connection with microglial activation is still not known. This study was undertaken to elucidate the role and underlying mechanism of microglial activation in Zn-induced nigrostriatal dopaminergic neurodegeneration. Male Wistar rats were treated intraperitoneally with/without zinc sulphate (20 mg/kg) in the presence/absence of minocycline (30 mg/kg), a microglial activation inhibitor, for 2-12 weeks. While neurobehavioral and biochemical indexes of PD and number of dopaminergic neurons were reduced, the number of microglial cells was increased in the substantia nigra of the Zn-exposed animals. Similarly, Zn elevated lipid peroxidation (LPO) and activities of superoxide dismutase (SOD) and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase; however, catalase activity was reduced. Besides, Zn increased an association of NADPH oxidase subunit p67(phox) with membrane, cytochrome c release from the mitochondria and cleavage of pro-caspase 3. Zn attenuated the expression of tyrosine hydroxylase (TH) and vesicular monoamine transporter-2 (VMAT-2) while augmented the expression of dopamine transporter (DAT) and heme oxygenase-1 (HO-1). Minocycline alleviated Zn-induced behavioural impairments, loss of TH-positive neurons, activated microglial cells and biochemical indexes and modulated the expression of studied genes/proteins towards normalcy. The results demonstrate that minocycline reduces the number of activated microglial cells and oxidative stress, which rescue from Zn-induced changes in the expression of monoamine transporter and nigrostriatal dopaminergic neurodegeneration.
Collapse
Affiliation(s)
- Vinod Kumar
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research, New Delhi, 110 025, India
| | - Brajesh Kumar Singh
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India
| | - Amit Kumar Chauhan
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research, New Delhi, 110 025, India
| | - Deepali Singh
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research, New Delhi, 110 025, India
| | - Devendra Kumar Patel
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India
| | - Chetna Singh
- CSIR-Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India.
- Academy of Scientific and Innovative Research, New Delhi, 110 025, India.
| |
Collapse
|
37
|
Sandström von Tobel J, Zoia D, Althaus J, Antinori P, Mermoud J, Pak HS, Scherl A, Monnet-Tschudi F. Immediate and delayed effects of subchronic Paraquat exposure during an early differentiation stage in 3D-rat brain cell cultures. Toxicol Lett 2014; 230:188-97. [DOI: 10.1016/j.toxlet.2014.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/30/2014] [Accepted: 02/02/2014] [Indexed: 11/28/2022]
|
38
|
Pesticides exposure as etiological factors of Parkinson's disease and other neurodegenerative diseases—A mechanistic approach. Toxicol Lett 2014; 230:85-103. [PMID: 24503016 DOI: 10.1016/j.toxlet.2014.01.039] [Citation(s) in RCA: 242] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/06/2013] [Accepted: 01/27/2014] [Indexed: 12/12/2022]
|
39
|
Zeng H, Ding M, Chen XX, Lu Q. Microglial NADPH oxidase activation mediates rod cell death in the retinal degeneration in rd mice. Neuroscience 2014; 275:54-61. [DOI: 10.1016/j.neuroscience.2014.05.065] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/13/2014] [Accepted: 05/29/2014] [Indexed: 12/18/2022]
|
40
|
Pathologic role of glial nitric oxide in adult and pediatric neuroinflammatory diseases. Neurosci Biobehav Rev 2014; 45:168-82. [DOI: 10.1016/j.neubiorev.2014.06.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 05/28/2014] [Accepted: 06/05/2014] [Indexed: 01/22/2023]
|
41
|
Navarro-Yepes J, Zavala-Flores L, Anandhan A, Wang F, Skotak M, Chandra N, Li M, Pappa A, Martinez-Fong D, Del Razo LM, Quintanilla-Vega B, Franco R. Antioxidant gene therapy against neuronal cell death. Pharmacol Ther 2014; 142:206-30. [PMID: 24333264 PMCID: PMC3959583 DOI: 10.1016/j.pharmthera.2013.12.007] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 11/26/2013] [Indexed: 12/21/2022]
Abstract
Oxidative stress is a common hallmark of neuronal cell death associated with neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, as well as brain stroke/ischemia and traumatic brain injury. Increased accumulation of reactive species of both oxygen (ROS) and nitrogen (RNS) has been implicated in mitochondrial dysfunction, energy impairment, alterations in metal homeostasis and accumulation of aggregated proteins observed in neurodegenerative disorders, which lead to the activation/modulation of cell death mechanisms that include apoptotic, necrotic and autophagic pathways. Thus, the design of novel antioxidant strategies to selectively target oxidative stress and redox imbalance might represent important therapeutic approaches against neurological disorders. This work reviews the evidence demonstrating the ability of genetically encoded antioxidant systems to selectively counteract neuronal cell loss in neurodegenerative diseases and ischemic brain damage. Because gene therapy approaches to treat inherited and acquired disorders offer many unique advantages over conventional therapeutic approaches, we discussed basic research/clinical evidence and the potential of virus-mediated gene delivery techniques for antioxidant gene therapy.
Collapse
Affiliation(s)
- Juliana Navarro-Yepes
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, United States; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, United States; Department of Toxicology, CINVESTAV-IPN, Mexico City, Mexico
| | - Laura Zavala-Flores
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, United States; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Annadurai Anandhan
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, United States; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Fang Wang
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Maciej Skotak
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Namas Chandra
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Ming Li
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, Dragana, Alexandroupolis, Greece
| | - Daniel Martinez-Fong
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, Mexico City, Mexico
| | | | | | - Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, United States; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, United States.
| |
Collapse
|
42
|
Williams CJ, Dexter DT. Neuroprotective and symptomatic effects of targeting group III mGlu receptors in neurodegenerative disease. J Neurochem 2013; 129:4-20. [PMID: 24224472 DOI: 10.1111/jnc.12608] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 10/28/2013] [Accepted: 11/06/2013] [Indexed: 12/21/2022]
Abstract
Neurodegenerative disorders possess common pathological mechanisms, such as protein aggregation, inflammation, oxidative stress (OS) and excitotoxicity, raising the possibility of shared therapeutic targets. As a result of the selective cellular and regional expression of group III metabotropic glutamate (mGlu) receptors, drugs targeting such receptors have demonstrated both neuroprotective properties and symptomatic improvements in several models of neurodegeneration. In recent years, the discovery and development of subtype-selective ligands for the group III mGlu receptors has gained pace, allowing further research into the functions of these receptors and revealing their roles in health and disease. Activation of this class of receptors results in neuroprotection, with a variety of underlying mechanisms implicated. Group III mGlu receptor stimulation prevents excitotoxicity by inhibiting glutamate release from neurons and microglia and increasing glutamate uptake by astrocytes. It also attenuates the neuroinflammatory response by reducing glial reactivity and encourages neurotrophic phenotypes. This article will review the current literature with regard to the neuroprotective and symptomatic effects of group III mGlu receptor activation and discuss their promise as therapeutic targets in neurodegenerative disease. We review the neuroprotective and symptomatic effects of targeting group III mGlu receptors in neurodegenerative disease: Excess extracellular glutamate causes overactivation of NMDA receptors resulting in excitotoxicity. Externalization of phosphatidylserine stimulates phagocytosis of neurons by activated microglia, which contribute to damage through glutamate and pro-inflammatory factor release. Reactive astrocytes produce cytotoxic factors enhancing neuronal cell death. Activation of group III mGlu receptors by glutamate and/or mGlu receptor ligands results in inhibition of glutamate release from presynaptic terminals and microglia, reducing excitotoxicity. Astrocytic glutamate uptake is increased and microglia produce neurotrophic factors.
Collapse
Affiliation(s)
- Claire J Williams
- Parkinson's Disease Research Group, Centre for Neuroinflammation and Neurodegeneration, Division of Brain Sciences, Faculty of Medicine, Imperial College London, Hammersmith Hospital Campus, London, UK
| | | |
Collapse
|
43
|
D’Amico E, Factor-Litvak P, Santella RM, Mitsumoto H. Clinical perspective on oxidative stress in sporadic amyotrophic lateral sclerosis. Free Radic Biol Med 2013; 65:509-527. [PMID: 23797033 PMCID: PMC3859834 DOI: 10.1016/j.freeradbiomed.2013.06.029] [Citation(s) in RCA: 216] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 06/14/2013] [Accepted: 06/14/2013] [Indexed: 12/12/2022]
Abstract
Sporadic amyotrophic lateral sclerosis (ALS) is one of the most devastating neurological diseases; most patients die within 3 to 4 years after symptom onset. Oxidative stress is a disturbance in the pro-oxidative/antioxidative balance favoring the pro-oxidative state. Autopsy and laboratory studies in ALS indicate that oxidative stress plays a major role in motor neuron degeneration and astrocyte dysfunction. Oxidative stress biomarkers in cerebrospinal fluid, plasma, and urine are elevated, suggesting that abnormal oxidative stress is generated outside of the central nervous system. Our review indicates that agricultural chemicals, heavy metals, military service, professional sports, excessive physical exertion, chronic head trauma, and certain foods might be modestly associated with ALS risk, with a stronger association between risk and smoking. At the cellular level, these factors are all involved in generating oxidative stress. Experimental studies indicate that a combination of insults that induce modest oxidative stress can exert additive deleterious effects on motor neurons, suggesting that multiple exposures in real-world environments are important. As the disease progresses, nutritional deficiency, cachexia, psychological stress, and impending respiratory failure may further increase oxidative stress. Moreover, accumulating evidence suggests that ALS is possibly a systemic disease. Laboratory, pathologic, and epidemiologic evidence clearly supports the hypothesis that oxidative stress is central in the pathogenic process, particularly in genetically susceptive individuals. If we are to improve ALS treatment, well-designed biochemical and genetic epidemiological studies, combined with a multidisciplinary research approach, are needed and will provide knowledge crucial to our understanding of ALS etiology, pathophysiology, and prognosis.
Collapse
Affiliation(s)
- Emanuele D’Amico
- Eleanor and Lou Gehrig MDA/ALS Research Center, The Neurological Institute of New York, Columbia University Medical Center, 710 West 168th Street (NI-9), New York, NY 10032, ;
| | - Pam Factor-Litvak
- Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032,
| | - Regina M. Santella
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032,
| | - Hiroshi Mitsumoto
- Eleanor and Lou Gehrig MDA/ALS Research Center, The Neurological Institute of New York, Columbia University Medical Center, 710 West 168th Street (NI-9), New York, NY 10032
| |
Collapse
|
44
|
Andersen HH, Johnsen KB, Moos T. Iron deposits in the chronically inflamed central nervous system and contributes to neurodegeneration. Cell Mol Life Sci 2013; 71:1607-22. [PMID: 24218010 PMCID: PMC3983878 DOI: 10.1007/s00018-013-1509-8] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/08/2013] [Accepted: 10/28/2013] [Indexed: 12/12/2022]
Abstract
Neurodegenerative disorders are characterized by the presence of inflammation in areas with neuronal cell death and a regional increase in iron that exceeds what occurs during normal aging. The inflammatory process accompanying the neuronal degeneration involves glial cells of the central nervous system (CNS) and monocytes of the circulation that migrate into the CNS while transforming into phagocytic macrophages. This review outlines the possible mechanisms responsible for deposition of iron in neurodegenerative disorders with a main emphasis on how iron-containing monocytes may migrate into the CNS, transform into macrophages, and die out subsequently to their phagocytosis of damaged and dying neuronal cells. The dying macrophages may in turn release their iron, which enters the pool of labile iron to catalytically promote formation of free-radical-mediated stress and oxidative damage to adjacent cells, including neurons. Healthy neurons may also chronically acquire iron from the extracellular space as another principle mechanism for oxidative stress-mediated damage. Pharmacological handling of monocyte migration into the CNS combined with chelators that neutralize the effects of extracellular iron occurring due to the release from dying macrophages as well as intraneuronal chelation may denote good possibilities for reducing the deleterious consequences of iron deposition in the CNS.
Collapse
Affiliation(s)
- Hjalte Holm Andersen
- Laboratory for Neurobiology, Biomedicine Group, Department of Health Science and Technology, Aalborg University, Fr. Bajers Vej 3B, 1.216, 9220, Aalborg East, Denmark
| | | | | |
Collapse
|
45
|
Chang X, Lu W, Dou T, Wang X, Lou D, Sun X, Zhou Z. Paraquat inhibits cell viability via enhanced oxidative stress and apoptosis in human neural progenitor cells. Chem Biol Interact 2013; 206:248-55. [DOI: 10.1016/j.cbi.2013.09.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 08/02/2013] [Accepted: 09/11/2013] [Indexed: 12/19/2022]
|
46
|
Figuera-Losada M, Rojas C, Slusher BS. Inhibition of microglia activation as a phenotypic assay in early drug discovery. ACTA ACUST UNITED AC 2013; 19:17-31. [PMID: 23945875 DOI: 10.1177/1087057113499406] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Complex biological processes such as inflammation, cell death, migration, proliferation, and the release of biologically active molecules can be used as outcomes in phenotypic assays during early stages of drug discovery. Although target-based approaches have been widely used over the past decades, a disproportionate number of first-in-class drugs have been identified using phenotypic screening. This review details phenotypic assays based on inhibition of microglial activation and their utility in primary and secondary screening, target validation, and pathway elucidation. The role of microglia, both in normal as well as in pathological conditions such as chronic neurodegenerative diseases, is reviewed. Methodologies to assess microglia activation in vitro are discussed in detail, and classes of therapeutic drugs known to decrease the proinflammatory and cytotoxic responses of activated microglia are appraised, including inhibitors of glutaminase, cystine/glutamate antiporter, nuclear factor κB, and mitogen-activated protein kinases.
Collapse
Affiliation(s)
- Mariana Figuera-Losada
- 1Brain Science Institute NeuroTranslational Drug Discovery Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | | |
Collapse
|
47
|
Rodriguez-Rocha H, Garcia-Garcia A, Pickett C, Li S, Jones J, Chen H, Webb B, Choi J, Zhou Y, Zimmerman MC, Franco R. Compartmentalized oxidative stress in dopaminergic cell death induced by pesticides and complex I inhibitors: distinct roles of superoxide anion and superoxide dismutases. Free Radic Biol Med 2013; 61:370-83. [PMID: 23602909 PMCID: PMC3883883 DOI: 10.1016/j.freeradbiomed.2013.04.021] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 12/21/2022]
Abstract
The loss of dopaminergic neurons induced by the parkinsonian toxins paraquat, rotenone, and 1-methyl-4-phenylpyridinium (MPP(+)) is associated with oxidative stress. However, controversial reports exist regarding the source/compartmentalization of reactive oxygen species (ROS) generation and its exact role in cell death. We aimed to determine in detail the role of superoxide anion (O2(•-)), oxidative stress, and their subcellular compartmentalization in dopaminergic cell death induced by parkinsonian toxins. Oxidative stress and ROS formation were determined in the cytosol, intermembrane (IMS), and mitochondrial matrix compartments, using dihydroethidine derivatives and the redox sensor roGFP, as well as electron paramagnetic resonance spectroscopy. Paraquat induced an increase in ROS and oxidative stress in both the cytosol and the mitochondrial matrix prior to cell death. MPP(+) and rotenone primarily induced an increase in ROS and oxidative stress in the mitochondrial matrix. No oxidative stress was detected at the level of the IMS. In contrast to previous studies, overexpression of manganese superoxide dismutase (MnSOD) or copper/zinc SOD (CuZnSOD) had no effect on alterations in ROS steady-state levels, lipid peroxidation, loss of mitochondrial membrane potential (ΔΨm), and dopaminergic cell death induced by MPP(+) or rotenone. In contrast, paraquat-induced oxidative stress and cell death were selectively reduced by MnSOD overexpression, but not by CuZnSOD or manganese-porphyrins. However, MnSOD also failed to prevent ΔΨm loss. Finally, paraquat, but not MPP(+) or rotenone, induced the transcriptional activation of the redox-sensitive antioxidant response elements (ARE) and nuclear factor kappa-B (NF-κB). These results demonstrate a selective role of mitochondrial O2(•-) in dopaminergic cell death induced by paraquat, and show that toxicity induced by the complex I inhibitors rotenone and MPP(+) does not depend directly on mitochondrial O2(•-) formation.
Collapse
Affiliation(s)
- Humberto Rodriguez-Rocha
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Aracely Garcia-Garcia
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Chillian Pickett
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Sumin Li
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Jocelyn Jones
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Han Chen
- Center for Biotechnology, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Brian Webb
- Thermo Scientific, Research and Development, Rockford, IL 61105, USA
| | - Jae Choi
- Thermo Scientific, Research and Development, Rockford, IL 61105, USA
| | - You Zhou
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; Center for Biotechnology, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA
| | - Matthew C Zimmerman
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA; School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583-0905, USA.
| |
Collapse
|
48
|
Cellular and molecular mediators of neuroinflammation in the pathogenesis of Parkinson's disease. Mediators Inflamm 2013; 2013:952375. [PMID: 23935251 PMCID: PMC3712244 DOI: 10.1155/2013/952375] [Citation(s) in RCA: 175] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 06/17/2013] [Indexed: 12/26/2022] Open
Abstract
Neuroinflammation is a host-defense mechanism associated with restoration of normal structure and function of the brain and neutralization of an insult. Increasing neuropathological and biochemical evidence from the brains of individuals with Parkinson's disease (PD) provides strong evidence for activation of neuroinflammatory pathways. Microglia, the resident innate immune cells, may play a major role in the inflammatory process of the diseased brain of patients with PD. Although microglia forms the first line of defense for the neural parenchyma, uncontrolled activation of microglia may directly affect neurons by releasing various molecular mediators such as inflammatory cytokines (tumor necrosis factor-α, interleukin [IL]-6, and IL-1β), nitric oxide, prostaglandin E2, and reactive oxygen and nitrogen species. Moreover, recent studies have reported that activated microglia phagocytose not only damaged cell debris but also intact neighboring cells. This phenomenon further supports their active participation in self-enduring neuronal damage cycles. As the relationship between PD and neuroinflammation is being studied, there is a realization that both cellular and molecular mediators are most likely assisting pathological processes leading to disease progression. Here, we discuss mediators of neuroinflammation, which are known activators released from damaged parenchyma of the brain and result in neuronal degeneration in patients with PD.
Collapse
|
49
|
Metal dyshomeostasis and inflammation in Alzheimer's and Parkinson's diseases: possible impact of environmental exposures. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:726954. [PMID: 23710288 PMCID: PMC3654362 DOI: 10.1155/2013/726954] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 02/06/2013] [Accepted: 02/07/2013] [Indexed: 12/14/2022]
Abstract
A dysregulated metal homeostasis is associated with both Alzheimer's (AD) and Parkinson's (PD) diseases; AD patients have decreased cortex and elevated serum copper levels along with extracellular amyloid-beta plaques containing copper, iron, and zinc. For AD, a putative hepcidin-mediated lowering of cortex copper mechanism is suggested. An age-related mild chronic inflammation and/or elevated intracellular iron can trigger hepcidin production followed by its binding to ferroportin which is the only neuronal iron exporter, thereby subjecting it to lysosomal degradation. Subsequently raised neuronal iron levels can induce translation of the ferroportin assisting and copper binding amyloid precursor protein (APP); constitutive APP transmembrane passage lowers the copper pool which is important for many enzymes. Using in silico gene expression analyses, we here show significantly decreased expression of copper-dependent enzymes in AD brain and metallothioneins were upregulated in both diseases. Although few AD exposure risk factors are known, AD-related tauopathies can result from cyanobacterial microcystin and β-methylamino-L-alanine (BMAA) intake. Several environmental exposures may represent risk factors for PD; for this disease neurodegeneration is likely to involve mitochondrial dysfunction, microglial activation, and neuroinflammation. Administration of metal chelators and anti-inflammatory agents could affect disease outcomes.
Collapse
|
50
|
Wu B, Song B, Yang H, Huang B, Chi B, Guo Y, Liu H. Central nervous system damage due to acute paraquat poisoning: An experimental study with rat model. Neurotoxicology 2013; 35:62-70. [DOI: 10.1016/j.neuro.2012.12.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 12/08/2012] [Accepted: 12/08/2012] [Indexed: 12/17/2022]
|