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Abd El-Ghafar OAM, Hassanein EHM, Sayed AM, Rashwan EK, Shalkami AGS, Mahmoud AM. Acetovanillone prevents cyclophosphamide-induced acute lung injury by modulating PI3K/Akt/mTOR and Nrf2 signaling in rats. Phytother Res 2021; 35:4499-4510. [PMID: 33969557 DOI: 10.1002/ptr.7153] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 02/16/2021] [Accepted: 04/23/2021] [Indexed: 12/30/2022]
Abstract
Cyclophosphamide (CP) is a medication used as an anticancer drug and to suppress the immune system. However, its clinical applications are restricted because of the toxic and adverse side effects. The present study investigated the protective effect of acetovanillone (AV), a natural NADPH oxidase inhibitor, against acute lung injury (ALI) induced by CP. Rats were administered AV (100 mg/kg) for 10 days and a single injection of CP (200 mg/kg) at day 7. At the end of the experiment, the animals were sacrificed, and lung samples were collected for analyses. CP caused ALI manifested by the histopathological alterations. Lipid peroxidation and NADPH oxidase activity were increased, whereas GSH and antioxidant enzymes were decreased in the lung of CP-intoxicated rats. Oral administration of AV prevented CP-induced lung injury and oxidative stress and enhanced antioxidant defenses. AV downregulated Keap1 and upregulated Nrf2, GCLC, HO-1, and SOD3 mRNA. In addition, AV boosted the expression of PI3K, Akt, mTOR, and cytoglobin. In vitro, AV showed a synergistic anticancer effect when combined with CP. In conclusion, AV protected against CP-induced ALI by attenuating oxidative stress and boosting Nrf2/HO-1 and PI3K/Akt/mTOR signaling. Therefore, AV might represent a promising adjuvant to prevent lung injury in patients receiving CP.
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Affiliation(s)
- Omnia A M Abd El-Ghafar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni Suef, Egypt
| | - Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Asyut, Egypt
| | - Eman K Rashwan
- Department of Physiology, College of Medicine, Jouf University, Sakakah, Saudi Arabia.,Department of Physiology, College of Medicine, Al-Azhar University, Cairo, Egypt
| | - Abdel-Gawad S Shalkami
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ayman M Mahmoud
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni Suef, Egypt.,Biotechnology Department, Research Institute of Medicinal and Aromatic Plants, Beni-Suef University, Beni Suef, Egypt
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52
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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.
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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
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53
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El-Gamal M, Salama M, Collins-Praino LE, Baetu I, Fathalla AM, Soliman AM, Mohamed W, Moustafa AA. Neurotoxin-Induced Rodent Models of Parkinson's Disease: Benefits and Drawbacks. Neurotox Res 2021; 39:897-923. [PMID: 33765237 DOI: 10.1007/s12640-021-00356-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/13/2021] [Accepted: 03/18/2021] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD), the second most common neurodegenerative disorder, is characterized by cardinal motor impairments, including akinesia and tremor, as well as by a host of non-motor symptoms, including both autonomic and cognitive dysfunction. PD is associated with a death of nigral dopaminergic neurons, as well as the pathological spread of Lewy bodies, consisting predominantly of the misfolded protein alpha-synuclein. To date, only symptomatic treatments, such as levodopa, are available, and trials aiming to cure the disease, or at least halt its progression, have not been successful. Wong et al. (2019) suggested that the lack of effective therapy against neurodegeneration in PD might be attributed to the fact that the molecular mechanisms standing behind the dopaminergic neuronal vulnerability are still a major scientific challenge. Understanding these molecular mechanisms is critical for developing effective therapy. Thirty-five years ago, Calne and William Langston (1983) raised the question of whether biological or environmental factors precipitate the development of PD. In spite of great advances in technology and medicine, this question still lacks a clear answer. Only 5-15% of PD cases are attributed to a genetic mutation, with the majority of cases classified as idiopathic, which could be linked to exposure to environmental contaminants. Rodent models play a crucial role in understanding the risk factors and pathogenesis of PD. Additionally, well-validated rodent models are critical for driving the preclinical development of clinically translatable treatment options. In this review, we discuss the mechanisms, similarities and differences, as well as advantages and limitations of different neurotoxin-induced rat models of PD. In the second part of this review, we will discuss the potential future of neurotoxin-induced models of PD. Finally, we will briefly demonstrate the crucial role of gene-environment interactions in PD and discuss fusion or dual PD models. We argue that these models have the potential to significantly further our understanding of PD.
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Affiliation(s)
- Mohamed El-Gamal
- Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt. .,Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | - Mohamed Salama
- Toxicology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt.,Medical Experimental Research Center (MERC), Faculty of Medicine, Mansoura University, Mansoura, Egypt.,Global Brain Health Institute (GBHI), Trinity College Dublin (TCD), Dublin, Ireland
| | | | | | - Ahmed M Fathalla
- Department of Pharmacology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Amira M Soliman
- Department of Pharmacology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Wael Mohamed
- Clinical Pharmacology Department, Faculty of Medicine, Menoufia University, Mansoura, Egypt.,Department of Basic Medical Science, Kulliyyah of Medicine, International Islamic University, Kuantan, Pahang, Malaysia
| | - Ahmed A Moustafa
- School of Social Sciences and Psychology and Marcs Institute for Brain and Behaviour, Western Sydney University, Sydney, NSW, Australia.,Department of Human Anatomy and Physiology, the Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
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54
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Xu BY, Sun J, Chen SP, Wang XM, Chen N, Li DY, Chen G, Mei W, Tian YK, Zhou YQ, Ye DW. Nox2 contributes to reactive oxygen species-induced redox imbalance in cancer-induced bone pain. Am J Transl Res 2021; 13:1269-1279. [PMID: 33841655 PMCID: PMC8014423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 07/21/2020] [Indexed: 06/12/2023]
Abstract
We have recently demonstrated that reactive oxygen species (ROS) scavengers ameliorate mechanical allodynia in a rat model of cancer-induced bone pain (CIBP). In the present study, we investigated anti-nociceptive effect of Nox inhibitor apocynin in CIBP in rats. Mechanical allodynia was assessed by Von Frey tests in sham and CIBP group of rats. Western blotting and immunofluorescence technique were conducted to assess the expression levels and cellular localization of Nox2. Results illustrated that after intra-tibial implantation with tumor cells, Nox2 and ROS were both up-regulated in the spinal cord of rats. Injection of apocynin could dose-dependently decrease the abundance of Nox2 and inhibit the development of CIBP. Furthermore, pretreatment with the apocynin could delay the development of CIBP. This study for the first time proved that Nox2 inhibitors could downregulate the production of ROS in CIBP rats, which highlights the fact that Nox inhibitor is an important therapeutic option for CIBP and that, precise targeting inhibitor of different subtypes of Nox enzymes is needed to developed in future.
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Affiliation(s)
- Bing-Yang Xu
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Key Laboratory of Organ Transplantation, Ministry of EducationWuhan 430030, China
- NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan 430030, China
| | - Jia Sun
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Shu-Ping Chen
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Xiao-Mei Wang
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Nan Chen
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Dan-Yang Li
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Gang Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Key Laboratory of Organ Transplantation, Ministry of EducationWuhan 430030, China
- NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical SciencesWuhan 430030, China
| | - Wei Mei
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Yu-Ke Tian
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Ya-Qun Zhou
- Anesthesiology Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, China
| | - Da-Wei Ye
- Cancer Center, Shanxi Bethune Hospital, Shanxi Medical University, Shanxi Academy of Medical SciencesTaiyuan 030032, China
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Abstract
Apocynin is a naturally occurring acetophenone, found in the roots of Apocynum cannabinum and Picrorhiza kurroa. Various chemical and pharmaceutical modifications have been carried out to enhance the absorption and duration of action of apocynin, like, formulation of chitosan-based apocynin-loaded solid lipid nanoparticles, chitosan-oligosaccharide based nanoparticles, and biodegradable polyanhydride nanoparticles. Apocynin has been subjected to a wide range of experimental screening and has proved to be useful for amelioration of a variety of disorders, like diabetic complications, neurodegeneration, cardiovascular disorders, lung cancer, hepatocellular cancer, pancreatic cancer, and pheochromocytoma. Apocynin has been primarily reported as an NADPH oxidase (NOX) inhibitor and prevents translocation of its p47phox subunit to the plasma membrane, observed in neurodegeneration and hypertension. However, recent studies highlight its off-target effects that it is able to function as a scavenger of non-radical oxidant species, which is relevant for its activity against NOX 4 mediated production of hydrogen peroxide. Additionally, apocynin has shown inhibition of eNOS-dependent superoxide production in diabetic cardiomyopathy, reduction of NLRP3 activation and TGFβ/Smad signaling in diabetic nephropathy, diminished VEGF expression and decreased retinal NF-κB activation in diabetic retinopathy, inhibition of P38/MAPK/Caspase3 pathway in pheochromocytoma, inhibition of AKT-GSK3β and ERK1/2 pathways in pancreatic cancer, and decreased FAK/PI3K/Akt signaling in hepatocellular cancer. This review aims to discuss the pharmacokinetics and mechanisms of the pharmacological actions of apocynin.
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Affiliation(s)
- Shreya R Savla
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai, India
| | - Ankit P Laddha
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai, India
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Regulation of Superoxide by BAP31 through Its Effect on p22 phox and Keap1/Nrf2/HO-1 Signaling Pathway in Microglia. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1457089. [PMID: 33777312 PMCID: PMC7969104 DOI: 10.1155/2021/1457089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 11/28/2020] [Accepted: 12/23/2020] [Indexed: 11/20/2022]
Abstract
Reactive oxygen species (ROS) production by activation of microglia is considered to be a major cause of neuronal dysfunction, which can lead to damage and death through direct oxidative damage to neuronal macromolecules or derangement of neuronal redox signaling circuits. BAP31, an integral ER membrane protein, has been defined as a regulatory molecule in the CNS. Our latest studies have found that BAP31 deficiency leads to activation of microglia. In this study, we discovered that BAP31 deficiency upregulated LPS-induced superoxide anion production in BV2 cells and mice by upregulating the expression level of p22phox and by inhibiting the activation of Nrf2-HO-1 signaling. Knockdown of p22phox/keap1 or use of an NADPH oxidase inhibitor (apocynin) reversed the production of superoxide anion and inflammatory cytokines, which then reduced neuronal damage and death in vitro and in vivo. These results suggest that BAP31 deficiency contributes to microglia-related superoxide anion production and neuroinflammation through p22phox and keap1. Furthermore, the excess superoxide anion cooperated with inflammatory cytokines to induce the damage and death of neurons. Thus, we determined that BAP31 is an important regulator in superoxide anion production and neuroinflammation, and the downstream regulators or agonists of BAP31 could therefore be considered as potential therapeutic targets in microglial-related superoxide anion production and neuroinflammation.
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Wang K, Shi Y, Liu W, Liu S, Sun MZ. Taurine improves neuron injuries and cognitive impairment in a mouse Parkinson's disease model through inhibition of microglial activation. Neurotoxicology 2021; 83:129-136. [PMID: 33450328 DOI: 10.1016/j.neuro.2021.01.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 01/08/2021] [Accepted: 01/08/2021] [Indexed: 12/27/2022]
Abstract
Clinical and experimental findings support the view that activation of hippocampus microglia through NADPH oxidase contributes to cognitive impairment in Parkinson's disease (PD). Taurine, an antioxidant, displays an exclusive physical property on brain function, such as learning and memory. To date, the role of taurine in improving cognitive impairment in PD is not fully uncovered. Hence, we evaluated the protective effect of taurine on cognitive ability and explored the related mechanism in the model built by paraquat and maneb (P + M)-induced PD mice. Then the ability of learning and memory was observed by Morris water maze, neuron loss was evaluated by immunohistochemistry in hippocampus, the level of postsynaptic density 95 (PSD95) and microglia activation was assessed by immunostaining, the molecules (gp91phox, p47phox, mac1, p-Src/Src and p-Erk/Erk) were examined by western blot. The results showed that taurine could alleviate the impairments in learning and memory induced by P + M injection in mice (decreased escape latency on day 4, P < 0.01; decreased swimming distance on day 4, P < 0.05; increased percent time in target quadrant, P < 0.05), corresponding with activation of microglia (decreased IBa-1 density, P < 0.001; decreased the protein expression of p47phox, P < 0.05; decreased protein expression of gp91phox, P < 0.01; decreased p-Src/Src, P < 0.01; decreased p-Erk/Erk, P < 0.01; decreased mac 1, P < 0.01), decreased neuron loss (increased number of NeurN+ neuron, P < 0.001; increased protein expression of NeruN, P < 0.01; decreased protein expression of caspase 3, P < 0.01) and increased PSD95 level in hippocampus (P < 0.01). The results indicated that mac1 and Src-Erk signaling was involved in increased NADPH oxidase expression in hippocampus microglia of P + M mice, and taurine could improve injuries in learning and memory through mac1 reduction. The new findings in mac1 triggering hippocampal microglia NADPH oxidase through Src/Erk pathway of the present study might provide a therapy target for PD.
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Affiliation(s)
- Ke Wang
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China; Department of Clinical Nutrition, the Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Yongquan Shi
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Wei Liu
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China; Department of Chinese Traditional Medicine, the First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Shuqing Liu
- Department of Biochemistry, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China.
| | - Ming-Zhong Sun
- Department of Biotechnology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China.
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Arsenault EJ, McGill CM, Barth BM. Sphingolipids as Regulators of Neuro-Inflammation and NADPH Oxidase 2. Neuromolecular Med 2021; 23:25-46. [PMID: 33547562 PMCID: PMC9020407 DOI: 10.1007/s12017-021-08646-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/14/2021] [Indexed: 12/14/2022]
Abstract
Neuro-inflammation accompanies numerous neurological disorders and conditions where it can be associated with a progressive neurodegenerative pathology. In a similar manner, alterations in sphingolipid metabolism often accompany or are causative features in degenerative neurological conditions. These include dementias, motor disorders, autoimmune conditions, inherited metabolic disorders, viral infection, traumatic brain and spinal cord injury, psychiatric conditions, and more. Sphingolipids are major regulators of cellular fate and function in addition to being important structural components of membranes. Their metabolism and signaling pathways can also be regulated by inflammatory mediators. Therefore, as certain sphingolipids exert distinct and opposing cellular roles, alterations in their metabolism can have major consequences. Recently, regulation of bioactive sphingolipids by neuro-inflammatory mediators has been shown to activate a neuronal NADPH oxidase 2 (NOX2) that can provoke damaging oxidation. Therefore, the sphingolipid-regulated neuronal NOX2 serves as a mechanistic link between neuro-inflammation and neurodegeneration. Moreover, therapeutics directed at sphingolipid metabolism or the sphingolipid-regulated NOX2 have the potential to alleviate neurodegeneration arising out of neuro-inflammation.
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Affiliation(s)
- Emma J Arsenault
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, NH, 03824, USA
| | - Colin M McGill
- Department of Chemistry, University of Alaska Anchorage, Anchorage, AK, 99508, USA
| | - Brian M Barth
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, NH, 03824, USA.
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Bravo-Sánchez E, Peña-Montes D, Sánchez-Duarte S, Saavedra-Molina A, Sánchez-Duarte E, Montoya-Pérez R. Effects of Apocynin on Heart Muscle Oxidative Stress of Rats with Experimental Diabetes: Implications for Mitochondria. Antioxidants (Basel) 2021; 10:antiox10030335. [PMID: 33668280 PMCID: PMC7996266 DOI: 10.3390/antiox10030335] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 12/13/2022] Open
Abstract
Diabetes mellitus (DM) constitutes one of the public health problems today. It is characterized by hyperglycemia through a defect in the β-cells function and/or decreased insulin sensitivity. Apocynin has been tasted acting directly as an NADPH oxidase inhibitor and reactive oxygen species (ROS) scavenger, exhibiting beneficial effects against diabetic complications. Hence, the present study’s goal was to dissect the possible mechanisms by which apocynin could mediate its cardioprotective effect against DM-induced oxidative stress. Male Wistar rats were assigned into 4 groups: Control (C), control + apocynin (C+A), diabetes (D), diabetes + apocynin (D+A). DM was induced with streptozotocin. Apocynin treatment (3 mg/kg/day) was applied for 5 weeks. Treatment significantly decreased blood glucose levels and insulin resistance in diabetic rats. In cardiac tissue, ROS levels were higher, and catalase enzyme activity was reduced in the D group compared to the C group; the apocynin treatment significantly attenuated these responses. In heart mitochondria, Complexes I and II of the electron transport chain (ETC) were significantly enhanced in the D+A group. Total glutathione, the level of reduced glutathione (GSH) and the GSH/ oxidized glutathione (GSSG) ratio were increased in the D+A group. Superoxide dismutase (SOD) and the glutathione peroxidase (GSH-Px) activities were without change. Apocynin enhances glucose uptake and insulin sensitivity, preserving the antioxidant defense and mitochondrial function.
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Affiliation(s)
- Estefanía Bravo-Sánchez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, Morelia 58030, Michoacán, Mexico; (E.B.-S.); (D.P.-M.); (S.S.-D.); (A.S.-M.)
| | - Donovan Peña-Montes
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, Morelia 58030, Michoacán, Mexico; (E.B.-S.); (D.P.-M.); (S.S.-D.); (A.S.-M.)
| | - Sarai Sánchez-Duarte
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, Morelia 58030, Michoacán, Mexico; (E.B.-S.); (D.P.-M.); (S.S.-D.); (A.S.-M.)
| | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, Morelia 58030, Michoacán, Mexico; (E.B.-S.); (D.P.-M.); (S.S.-D.); (A.S.-M.)
| | - Elizabeth Sánchez-Duarte
- Departamento de Ciencias Aplicadas al Trabajo, Universidad de Guanajuato Campus León, Eugenio Garza Sada 572, Lomas del Campestre Sección 2, León 37150, Guanajuato, Mexico
- Correspondence: (E.S.-D.); (R.M.-P.); Tel.: +521-477-2670-4900 (ext. 4833) (E.S.-D.); +521-(443)-322-3500 (ext. 4217) (R.M.-P.)
| | - Rocío Montoya-Pérez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, Morelia 58030, Michoacán, Mexico; (E.B.-S.); (D.P.-M.); (S.S.-D.); (A.S.-M.)
- Correspondence: (E.S.-D.); (R.M.-P.); Tel.: +521-477-2670-4900 (ext. 4833) (E.S.-D.); +521-(443)-322-3500 (ext. 4217) (R.M.-P.)
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Zhang D, Li S, Hou L, Jing L, Ruan Z, Peng B, Zhang X, Hong JS, Zhao J, Wang Q. Microglial activation contributes to cognitive impairments in rotenone-induced mouse Parkinson's disease model. J Neuroinflammation 2021; 18:4. [PMID: 33402167 PMCID: PMC7786472 DOI: 10.1186/s12974-020-02065-z] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 12/16/2020] [Indexed: 12/15/2022] Open
Abstract
Background Cognitive decline occurs frequently in Parkinson’s disease (PD), which greatly decreases the quality of life of patients. However, the mechanisms remain to be investigated. Neuroinflammation mediated by overactivated microglia is a common pathological feature in multiple neurological disorders, including PD. This study is designed to explore the role of microglia in cognitive deficits by using a rotenone-induced mouse PD model. Methods To evaluate the role of microglia in rotenone-induced cognitive deficits, PLX3397, an inhibitor of colony-stimulating factor 1 receptor, and minocycline, a widely used antibiotic, were used to deplete or inactivate microglia, respectively. Cognitive performance of mice among groups was detected by Morris water maze, objective recognition, and passive avoidance tests. Neurodegeneration, synaptic loss, α-synuclein phosphorylation, glial activation, and apoptosis were determined by immunohistochemistry and Western blot or immunofluorescence staining. The gene expression of inflammatory factors and lipid peroxidation were further explored by using RT-PCR and ELISA kits, respectively. Results Rotenone dose-dependently induced cognitive deficits in mice by showing decreased performance of rotenone-treated mice in the novel objective recognition, passive avoidance, and Morris water maze compared with that of vehicle controls. Rotenone-induced cognitive decline was associated with neurodegeneration, synaptic loss, and Ser129-phosphorylation of α-synuclein and microglial activation in the hippocampal and cortical regions of mice. A time course experiment revealed that rotenone-induced microglial activation preceded neurodegeneration. Interestingly, microglial depletion by PLX3397 or inactivation by minocycline significantly reduced neuronal damage and α-synuclein pathology as well as improved cognitive performance in rotenone-injected mice. Mechanistically, PLX3397 and minocycline attenuated rotenone-induced astroglial activation and production of cytotoxic factors in mice. Reduced lipid peroxidation was also observed in mice treated with combined PLX3397 or minocycline and rotenonee compared with rotenone alone group. Finally, microglial depletion or inactivation was found to mitigate rotenone-induced neuronal apoptosis. Conclusions Taken together, our findings suggested that microglial activation contributes to cognitive impairments in a rotenone-induced mouse PD model via neuroinflammation, oxidative stress, and apoptosis, providing novel insight into the immunopathogensis of cognitive deficits in PD. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-020-02065-z.
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Affiliation(s)
- Dongdong Zhang
- School of Public Health, Dalian Medical University, Dalian, 116044, China
| | - Sheng Li
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian, 116044, China
| | - Liyan Hou
- 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, No. 9 W. Lvshun South Road, Dalian, 116044, China
| | - Lu Jing
- School of Public Health, Dalian Medical University, Dalian, 116044, China
| | - Zhengzheng Ruan
- School of Public Health, Dalian Medical University, Dalian, 116044, China
| | - Bingjie Peng
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian, 116044, China
| | - Xiaomeng Zhang
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian, 116044, China
| | - Jau-Shyong Hong
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, North Carolina, USA
| | - Jie Zhao
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian, 116044, 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, No. 9 W. Lvshun South Road, Dalian, 116044, China.
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Huang R, Hou L, Zhai X, Ruan Z, Sun W, Zhang D, Zhao X, Wang Q. 2,5-hexanedione induces NLRP3 inflammasome activation and neurotoxicity through NADPH oxidase-dependent pathway. Free Radic Biol Med 2021; 162:561-570. [PMID: 33212186 DOI: 10.1016/j.freeradbiomed.2020.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 10/15/2020] [Accepted: 11/10/2020] [Indexed: 01/08/2023]
Abstract
Chronic exposure to n-hexane causes sensorimotor neuropathy, which is mediated by 2,5-hexanedione (HD), a toxic metabolite of n-hexane. Activation of the nucleotide-binding and oligomerization domain, leucine-rich repeat, and pyrin domain-containing 3 (NLRP3) inflammasome is involved in multiple neurodegenerative diseases. However, whether the NLRP3 inflammasome contributes to HD-induced neurotoxicity remains unclear. In this study, the effects of HD on NLRP3 inflammasome activation and the underlying mechanisms were determined by using HD-treated rat and cell culture models. Increased NLRP3 expression, caspase-1 activation and interleukin-1β production were observed in both the brain and spinal cord of HD-treated rats. Double-immunofluorescence staining showed that ASC speck formation and caspase-1 expression were mainly localized in microglia. HD-induced activation of the NLRP3 inflammasome was further mirrored in BV2 microglial cells and was associated with NADPH oxidase activation. Interestingly, inhibition of NADPH oxidase by apocynin or specific siRNAs significantly mitigated HD-induced NLRP3 inflammasome activation. Furthermore, apocynin suppressed activation of the MAPK and NF-κB signaling pathways. Blocking activation of p38-MAPK and NF-κB significantly reduced HD-induced capase-1 activation and interleukin-1β maturation, indicating a critical role of NADPH oxidase and downstream MAPK and NF-κB pathways in regulating activation of NLRP3 inflammasome, in HD-treated microglia. Finally, we found that inhibition of microglial NLRP3 inflammasome and NADPH oxidase activation abrogated HD-induced microglial activation and neurodegeneration in both SHSY5Y neuronal cells and primary cortical neuron-glia cultures. Altogether, our findings suggest that NADPH oxidase-dependent activation of microglial NLRP3 inflammasome contributes to HD-induced neurotoxicity, providing novel insight into the mechanisms of this solvent-induced neuropathy.
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Affiliation(s)
- Ruixue Huang
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China
| | - Liyan Hou
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China; National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, China
| | - Xingyue Zhai
- Department of Clinical Nutrition, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Zhengzheng Ruan
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China
| | - Wei Sun
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China
| | - Dongdong Zhang
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China
| | - Xiulan Zhao
- School of Public Health, Shandong University, Jinan, 250012, China
| | - Qingshan Wang
- School of Public Health, Dalian Medical University, Dalian, Liaoning Province, China; National-Local Joint Engineering Research Center for Drug-Research and Development (R & D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, 116044, China.
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Hassanein EHM, Abd El-Ghafar OAM, Ahmed MA, Sayed AM, Gad-Elrab WM, Ajarem JS, Allam AA, Mahmoud AM. Edaravone and Acetovanillone Upregulate Nrf2 and PI3K/Akt/mTOR Signaling and Prevent Cyclophosphamide Cardiotoxicity in Rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:5275-5288. [PMID: 33299300 PMCID: PMC7721127 DOI: 10.2147/dddt.s281854] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/11/2020] [Indexed: 01/17/2023]
Abstract
Introduction Cyclophosphamide (CP) causes redox imbalance and its use is associated with marked cardiotoxicity that limits its clinical applications. The present study investigated the protective effects of acetovanillone (AV) and edaravone (ED) against CP-induced oxidative stress and cardiac damage, emphasizing the role of PI3K/Akt/mTOR and Nrf2 signaling. Materials and Methods Rats received either AV (100 mg/kg) or ED (20 mg/kg) orally for 10 days and CP (200 mg/kg) on day 7. At day 11, the rats were sacrificed, and samples were collected for analysis. Results AV and ED ameliorated serum troponin I, CK-MB, LDH, AST and ALP, and prevented cardiac histological alterations in CP-intoxicated rats. Both treatments decreased cardiac lipid peroxidation and enhanced GSH, SOD and cytoglobin in CP-induced rats. AV and ED downregulated Keap1, whereas increased the expression of PI3K, Akt, mTOR and Nrf2 in the heart of rats received CP. Additionally, the binding modes of AV and ED to Keap1 were pinpointed in silico using molecular docking simulations. Conclusion AV and ED prevent CP cardiotoxicity by attenuating oxidative stress and tissue injury, and modulating cytoglobin, and PI3K/Akt/mTOR and Keap1/Nrf2 signaling. Therefore, AV and ED may represent promising agents that can prevent cardiac injury in patients receiving CP.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Omnia A M Abd El-Ghafar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Wail M Gad-Elrab
- Human Anatomy & Embryology Department Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Jamaan S Ajarem
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Ayman M Mahmoud
- Zoology Department Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.,Biotechnology Department, Research Institute of Medicinal and Aromatic Plants, Beni-Suef University, Beni-Suef, Egypt
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Celesia A, Morana O, Fiore T, Pellerito C, D’Anneo A, Lauricella M, Carlisi D, De Blasio A, Calvaruso G, Giuliano M, Emanuele S. ROS-Dependent ER Stress and Autophagy Mediate the Anti-Tumor Effects of Tributyltin (IV) Ferulate in Colon Cancer Cells. Int J Mol Sci 2020; 21:ijms21218135. [PMID: 33143349 PMCID: PMC7663760 DOI: 10.3390/ijms21218135] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/23/2020] [Accepted: 10/28/2020] [Indexed: 12/13/2022] Open
Abstract
Organotin compounds represent potential cancer therapeutics due to their pro-apoptotic action. We recently synthesized the novel organotin ferulic acid derivative tributyltin (IV) ferulate (TBT-F) and demonstrated that it displays anti-tumor properties in colon cancer cells related with autophagic cell death. The purpose of the present study was to elucidate the mechanism of TBT-F action in colon cancer cells. We specifically show that TBT-F-dependent autophagy is determined by a rapid generation of reactive oxygen species (ROS) and correlated with endoplasmic reticulum (ER) stress. TBT-F evoked nuclear factor erythroid-2 related factor 2 (Nrf2)-mediated antioxidant response and Nrf2 silencing by RNA interference markedly increased the anti-tumor efficacy of the compound. Moreover, as a consequence of ROS production, TBT-F increased the levels of glucose regulated protein 78 (Grp78) and C/EBP homologous protein (CHOP), two ER stress markers. Interestingly, Grp78 silencing produced significant decreasing effects on the levels of the autophagic proteins p62 and LC3-II, while only p62 decreased in CHOP-silenced cells. Taken together, these results indicate that ROS-dependent ER stress and autophagy play a major role in the TBT-F action mechanism in colon cancer cells and open a new perspective to consider the compound as a potential candidate for colon cancer treatment.
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Affiliation(s)
- Adriana Celesia
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (A.C.); (M.L.); (D.C.)
| | - Ornella Morana
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (O.M.); (A.D.); (A.D.B.); (G.C.)
| | - Tiziana Fiore
- Department of Physics and Chemistry “Emilio Segrè” (DiFC), University of Palermo, Viale delle Scienze, Building 17, 90128 Palermo, Italy; (T.F.); (C.P.)
- Inter-University Consortium for Research on the Chemistry of Metal Ions in Biological Systems (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Claudia Pellerito
- Department of Physics and Chemistry “Emilio Segrè” (DiFC), University of Palermo, Viale delle Scienze, Building 17, 90128 Palermo, Italy; (T.F.); (C.P.)
- Inter-University Consortium for Research on the Chemistry of Metal Ions in Biological Systems (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Antonella D’Anneo
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (O.M.); (A.D.); (A.D.B.); (G.C.)
| | - Marianna Lauricella
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (A.C.); (M.L.); (D.C.)
| | - Daniela Carlisi
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (A.C.); (M.L.); (D.C.)
| | - Anna De Blasio
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (O.M.); (A.D.); (A.D.B.); (G.C.)
| | - Giuseppe Calvaruso
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (O.M.); (A.D.); (A.D.B.); (G.C.)
| | - Michela Giuliano
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (O.M.); (A.D.); (A.D.B.); (G.C.)
- Correspondence: (M.G.); (S.E.)
| | - Sonia Emanuele
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, Via del Vespro 129, 90127 Palermo, Italy; (A.C.); (M.L.); (D.C.)
- Correspondence: (M.G.); (S.E.)
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Oxidative Stress in Parkinson's Disease: Potential Benefits of Antioxidant Supplementation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2360872. [PMID: 33101584 PMCID: PMC7576349 DOI: 10.1155/2020/2360872] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 09/06/2020] [Accepted: 09/21/2020] [Indexed: 12/11/2022]
Abstract
Parkinson's disease (PD) occurs in approximately 1% of the population over 65 years of age and has become increasingly more common with advances in age. The number of individuals older than 60 years has been increasing in modern societies, as well as life expectancy in developing countries; therefore, PD may pose an impact on the economic, social, and health structures of these countries. Oxidative stress is highlighted as an important factor in the genesis of PD, involving several enzymes and signaling molecules in the underlying mechanisms of the disease. This review presents updated data on the involvement of oxidative stress in the disease, as well as the use of antioxidant supplements in its therapy.
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Waghela BN, Vaidya FU, Agrawal Y, Santra MK, Mishra V, Pathak C. Molecular insights of NADPH oxidases and its pathological consequences. Cell Biochem Funct 2020; 39:218-234. [PMID: 32975319 DOI: 10.1002/cbf.3589] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/18/2020] [Accepted: 09/01/2020] [Indexed: 12/13/2022]
Abstract
Reactive oxygen species (ROS), formed by the partial reduction of oxygen, were for a long time considered to be a byproduct of cellular metabolism. Since, increase in cellular levels of ROS results in oxidative stress leading to damage of nucleic acids, proteins, and lipids resulting in numerous pathological conditions; ROS was considered a bane for aerobic species. Hence, the discovery of NADPH oxidases (NOX), an enzyme family that specifically generates ROS as its prime product came as a surprise to redox biologists. NOX family proteins participate in various cellular functions including cell proliferation and differentiation, regulation of genes and protein expression, apoptosis, and host defence immunological response. Balanced expression and activation of NOX with subsequent production of ROS are critically important to regulate various genes and proteins to maintain homeostasis of the cell. However, dysregulation of NOX activation leading to enhanced ROS levels is associated with various pathophysiologies including diabetes, cardiovascular diseases, neurodegenerative diseases, ageing, atherosclerosis, and cancer. Although our current knowledge on NOX signifies its importance in the normal functioning of various cellular pathways; yet the choice of ROS producing enzymes which can tip the scale from homeostasis toward damage, as mediators of biological functions remain an oddity. Though the role of NOX in maintaining normal cellular functions is now deemed essential, yet its dysregulation leading to catastrophic events cannot be denied. Hence, this review focuses on the involvement of NOX enzymes in various pathological conditions imploring them as possible targets for therapies. SIGNIFICANCE OF THE STUDY: The NOXs are multi-subunit enzymes that generate ROS as a prime product. NOX generated ROS are usually regulated by various molecular factors and play a vital role in different physiological processes. The dysregulation of NOX activity is associated with pathological consequences. Recently, the dynamic proximity of NOX enzymes with different molecular signatures of pathologies has been studied extensively. It is essential to identify the precise role of NOX machinery in its niche during the progression of pathology. Although inhibition of NOX could be a promising approach for therapeutic interventions, it is critical to expand the current understanding of NOX's dynamicity and shed light on their molecular partners and regulators.
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Affiliation(s)
- Bhargav N Waghela
- School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat, India
| | - Foram U Vaidya
- School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat, India
| | - Yashika Agrawal
- Laboratory of Molecular Cancer Biology and Epigenetics, National Centre for Cell Science, Pune, Maharashtra, India
| | - Manas Kumar Santra
- Laboratory of Molecular Cancer Biology and Epigenetics, National Centre for Cell Science, Pune, Maharashtra, India
| | - Vinita Mishra
- School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat, India
| | - Chandramani Pathak
- School of Biological Sciences & Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat, India
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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.
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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
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Interaction of Oxidative Stress and Misfolded Proteins in the Mechanism of Neurodegeneration. Life (Basel) 2020; 10:life10070101. [PMID: 32629809 PMCID: PMC7400128 DOI: 10.3390/life10070101] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/21/2020] [Accepted: 06/28/2020] [Indexed: 12/20/2022] Open
Abstract
Aggregation of the misfolded proteins β-amyloid, tau, huntingtin, and α-synuclein is one of the most important steps in the pathology underlying a wide spectrum of neurodegenerative disorders, including the two most common ones—Alzheimer’s and Parkinson’s disease. Activity and toxicity of these proteins depends on the stage and form of aggregates. Excessive production of free radicals, including reactive oxygen species which lead to oxidative stress, is proven to be involved in the mechanism of pathology in most of neurodegenerative disorders. Both reactive oxygen species and misfolded proteins play a physiological role in the brain, and only deregulation in redox state and aggregation of the proteins leads to pathology. Here, we review the role of misfolded proteins in the activation of ROS production from various sources in neurons and glia. We discuss if free radicals can influence structural changes of the key toxic intermediates and describe the putative mechanisms by which oxidative stress and oligomers may cause neuronal death.
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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.
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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.
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Liu C, Liu Z, Zhang Z, Li Y, Fang R, Li F, Zhang J. A Scientometric Analysis and Visualization of Research on Parkinson's Disease Associated With Pesticide Exposure. Front Public Health 2020; 8:91. [PMID: 32318533 PMCID: PMC7154051 DOI: 10.3389/fpubh.2020.00091] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 03/05/2020] [Indexed: 12/21/2022] Open
Abstract
The etiology and pathogenesis of Parkinson's disease (PD) have not yet been clearly described. Both genetic and environmental factors contribute to the onset and progression of PD. Some pesticides have been demonstrated to be associated with PD by many previous studies and experiments, and an increasing number of researchers have paid attention to this area in recent years. This paper aims to explore the knowledge structure, analyze the current research hot spots, and discuss the research trend through screening and summarizing the present literature. Based on 1767 articles from the Web of Science Core Collection and PubMed database, this study carried out the analysis from the keywords, cited references, countries, authors, and some other aspects by using Citespace. The hot topics, valuable articles, and productive authors in this research field could be found after that. To the best of our knowledge, this is the first study to specifically visualize the relationship between pesticide exposure and PD, and forecast research tendency in the future.
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Affiliation(s)
- Chaoyang Liu
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
| | - Zehua Liu
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yanan Li
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
| | - Ruying Fang
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
| | - Fei Li
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
| | - Jingdong Zhang
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan, China.,School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, China
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71
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Gao J, Su G, Liu J, Zhang J, Zhou J, Liu X, Tian Y, Zhang Z. Mechanisms of Inhibition of Excessive Microglial Activation by Melatonin. J Mol Neurosci 2020; 70:1229-1236. [PMID: 32222896 DOI: 10.1007/s12031-020-01531-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 03/12/2020] [Indexed: 12/22/2022]
Abstract
As the innate immune cells that permanently reside in the central nervous system (CNS), microglia play an increasingly important role in maintaining brain function. Normally, microglia act as resting phenotype, which can be activated by various types of stimuli and release a variety of inflammatory mediators. Melatonin is an endogenous rhythmic hormone secreted principally by the pineal gland. Increasing evidence suggests that melatonin can detoxify reactive oxygen species (ROS) and prevent microglia from over-activation. This review summarizes the mechanisms of melatonin in inhibiting excessive activation of microglia and demonstrates the feasibility of melatonin in the treatment of diseases related to microglial over-activation.
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Affiliation(s)
- Juan Gao
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Gang Su
- Institute of Genetics, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Jifei Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Jiajia Zhang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Juanping Zhou
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Xiaoyan Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Ye Tian
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Zhenchang Zhang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China.
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72
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Poloxamer 188-mediated anti-inflammatory effect rescues cognitive deficits in paraquat and maneb-induced mouse model of Parkinson's disease. Toxicology 2020; 436:152437. [PMID: 32169474 DOI: 10.1016/j.tox.2020.152437] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/15/2020] [Accepted: 03/09/2020] [Indexed: 01/06/2023]
Abstract
Mild cognitive impairment in Parkinson's disease (PD-MCI) is considered as a nonmotor clinical symptom in Parkinson's disease (PD). Microglia-mediated inflammation contributes to cognitive function impairment. Poloxamer 188 (P188) is an amphipathic polymer which has cytoprotective effect in 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced dopaminergic (DA) neurons degeneration in PD. But whether P188 could ameliorate cognitive impairment in PD is still illusive. In the present study, we showed in a mouse model that paraquat (10 mg/kg) and maneb (30 mg/kg) (P + M) treatment intraperitoneally twice a week for 6 consecutive weeks resulted in cognitive deficits and synapse loss in hippocampus, together with DA neuron damage in the substantia nigra pars compacta (SNpc). P188 (0.8 g/kg) injection via tail vein 30 min after P + M administration significantly restored DA neuron numbers in SNpc and synapse density in hippocampus, and alleviated P + M-mediated cognitive function impairment in novel object recognition task and morris water maze task (MWM). Pathological synapse loss might be attributed to increased microglial phagocytic activity and cell density, and P188 prevented P + M-induced phagocytic state changes of microglia, such as increase in cell body size and decrease in process length, and upregulated microglia abundance in hippocampus. Consistently, P188 attenuated P + M-mediated increased mRNA levels of microglia proliferation related CSF1r and CSF2ra, microglial engulfment associated CD68, ICAM1, and ICAM2, and pro-inflammatory IL-6, IL-1β, CD11b, and TNF-α in hippocampus. Together, these findings suggest that the biocompatible polymer P188 blunts microglia activation which may promote synaptic loss and exacerbate cognitive function in a mouse model of PD-MCI.
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73
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Wang Z, Dong H, Wang J, Huang Y, Zhang X, Tang Y, Li Q, Liu Z, Ma Y, Tong J, Huang L, Fei J, Yu M, Wang J, Huang F. Pro-survival and anti-inflammatory roles of NF-κB c-Rel in the Parkinson's disease models. Redox Biol 2020; 30:101427. [PMID: 31986466 PMCID: PMC6994410 DOI: 10.1016/j.redox.2020.101427] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 12/19/2022] Open
Abstract
The pathological hallmarks of Parkinson's disease (PD) are the progressive loss of dopaminergic (DA) neurons in the substantia nigra pars compacta (SNpc) and the presence of overactivated glial cells and neuroinflammation. Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) c-Rel subunit is closely related in the pathological progress of PD, however the roles and mechanisms of c-Rel in PD development remain unclear. Here, in neurotoxins-induced PD models, the dynamic changes of NF-κB c-Rel and its functions were evaluated. We found that c-Rel was rapidly activated in the nigrostriatal pathway, which mainly occurred in dopaminergic neurons and microglia. c-Rel could maintain neuronal survival by initiating the anti-apoptotic gene expression in MPP+-treated SH-SY5Y cells and it could inhibit microglial overactivation by suppressing the inflammatory gene expression in LPS-challenged BV2 cells. c-Rel inhibitor IT901 aggravated the damage of MPTP on dopaminergic neurons and promoted the activation of microglia in the nigrostriatal pathway of mice. Moreover, the expression of c-Rel in blood samples of PD patients decreased dramatically. Our results indicate that the NF-κB/c-Rel subunit plays an important role in neuroprotection and neuroinflammation inhibition during PD progression. NF-κB c-Rel subunit is rapidly activated in the nigrostriatal pathway of PD mice. c-Rel promotes neuronal survival in MPP+-treated SH-SY5Y cells. c-Rel inhibits microglial overactivation in LPS-challenged BV2 cells. c-Rel inhibitor IT901 aggravates MPTP-induced damages in the nigrostriatal pathway. c-Rel is pro-survival, anti-oxidative stress and anti-inflammation in PD progression.
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Affiliation(s)
- Zishan Wang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Hongtian Dong
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jinghui Wang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yulu Huang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Xiaoshuang Zhang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yilin Tang
- Department of Neurology, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai, 200040, China
| | - Qing Li
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Zhaolin Liu
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Yuanyuan Ma
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jiabin Tong
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Li Huang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jian Fei
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Research Center for Model Organisms, Pudong, Shanghai, 201203, China; Shanghai Engineering Research Center for Model Organisms, Shanghai Model Organisms Center, INC., Shanghai, 201203, China
| | - Mei Yu
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China.
| | - Jian Wang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China; Department of Neurology, Huashan Hospital, Fudan University, 12 Wulumuqi Zhong Road, Shanghai, 200040, China.
| | - Fang Huang
- Department of Translational Neuroscience, Jing' an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China.
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74
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Lesion of the Locus Coeruleus Damages Learning and Memory Performance in Paraquat and Maneb-induced Mouse Parkinson’s Disease Model. Neuroscience 2019; 419:129-140. [DOI: 10.1016/j.neuroscience.2019.09.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 11/18/2022]
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75
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Qian JY, Deng P, Liang YD, Pang L, Wu LC, Yang LL, Zhou Z, Yu ZP. 8-Formylophiopogonanone B Antagonizes Paraquat-Induced Hepatotoxicity by Suppressing Oxidative Stress. Front Pharmacol 2019; 10:1283. [PMID: 31708790 PMCID: PMC6821879 DOI: 10.3389/fphar.2019.01283] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/07/2019] [Indexed: 01/15/2023] Open
Abstract
Flavonoids are some of the most important natural products with a variety of physiological activities. 8-Formylophiopogonanone B (8-FOB) is a naturally existing homoisoflavonoid in Ophiopogon japonicus. Paraquat (PQ) has been widely used as a potent herbicide and has high toxicity in humans. The goal of the present study was to investigate whether 8-FOB could protect against PQ-induced hepatotoxicity in vitro and in vivo. We first tested the protective effects of 8-FOB on PQ-induced cytotoxicity in L02 cells by determining cell viability, intracellular oxidative stress levels, mitochondrial function, and apoptosis in vitro. To verify the protective effects of 8-FOB, we pretreated mice with 8-FOB and assessed liver function, hepatic oxidative stress, and histopathological changes after PQ administration. Our results revealed that 8-FOB could antagonize PQ-induced hepatotoxicity in vitro and in vivo. The antagonistic effects could be attributed to suppressing oxidative stress, preserving mitochondrial function, and inhibiting apoptosis. The present study is the first to document that 8-FOB, a homoisoflavonoid compound, is an effective antioxidant for antagonizing PQ-induced hepatotoxicity.
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Affiliation(s)
- Jing-Yu Qian
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
| | - Ping Deng
- Department of Occupational Health, Third Military Medical University, Chongqing, China
| | - Yi-Dan Liang
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
| | - Li Pang
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
| | - Li-Chuan Wu
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
| | - Ling-Ling Yang
- Department of Occupational Health, Third Military Medical University, Chongqing, China
| | - Zhouv Zhou
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
| | - Zheng-Ping Yu
- Department of Cell Biology, School of Life Sciences and School of Medicine, Guangxi University, Nanning, China
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76
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Heydari M, Mokhtari-Zaer A, Amin F, Memarzia A, Saadat S, Hosseini M, Boskabady MH. The effect of Zataria multiflora hydroalcoholic extract on memory and lung changes induced by rats that inhaled paraquat. Nutr Neurosci 2019; 24:674-687. [DOI: 10.1080/1028415x.2019.1668173] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mahrokh Heydari
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amin Mokhtari-Zaer
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Amin
- Department of Physiology and Pharmacology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
- Physiology–Pharmacology Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Arghavan Memarzia
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saeideh Saadat
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Hosseini
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Hossein Boskabady
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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77
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Gu X, Xu Y, Xue WZ, Wu Y, Ye Z, Xiao G, Wang HL. Interplay of miR-137 and EZH2 contributes to the genome-wide redistribution of H3K27me3 underlying the Pb-induced memory impairment. Cell Death Dis 2019; 10:671. [PMID: 31511494 PMCID: PMC6739382 DOI: 10.1038/s41419-019-1912-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 08/13/2019] [Accepted: 08/26/2019] [Indexed: 01/20/2023]
Abstract
Compromised learning and memory is a common feature of multiple neurodegenerative disorders. A paradigm spatial memory impairment could be caused by developmental lead (Pb) exposure. Growing evidence implicates epigenetic modifications in the Pb-mediated memory deficits; however, how histone modifications exemplified by H3K27me3 (H3 Lys27 trimethylation) contribute to this pathogenesis remains poorly understood. Here we found that Pb exposure diminished H3K27me3 levels in vivo by suppressing EZH2 (enhancer of zeste homolog 2) expression at an early stage. EZH2 overexpression in Pb-treated rats rescued the H3K27me3 abundance and partially restored the normal spatial memory, as manifested by the rat performance in a Morris water maze test, and structural analysis of hippocampal spine densities. Furthermore, miR-137 and EZH2 constitute mutually inhibitory loop to regulate the H3K27me3 level, and this feedback regulation could be specifically activated by Pb treatment. Considering genes targeted by H3K27me3, ChIP-chip (chromatin immunoprecipitation on chip) studies revealed that Pb could remodel the genome-wide distribution of H3K27me3, represented by pathways like transcriptional regulation, developmental regulation, cell motion, and apoptosis, as well as a novel Wnt9b locus. As a Wnt isoform associated with canonical and noncanonical signaling, Wnt9b was regulated by the opposite modifications of H3K4me3 (H3 Lys4 trimethylation) and H3K27me3 in Pb-exposed neurons. Rescue trials further validated the contribution of Wnt9b to Pb-induced neuronal impairments, wherein canonical or noncanonical Wnt signaling potentially exhibited destructive or protective roles, respectively. In summary, the study reveals an epigenetic-based molecular change underlying Pb-triggered spatial memory deficits, and provides new potential avenues for our understanding of neurodegenerative diseases with environmental etiology.
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Affiliation(s)
- Xiaozhen Gu
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China
| | - Yi Xu
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China
| | - Wei-Zhen Xue
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China
| | - Yulan Wu
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China
| | - Zi Ye
- College of Life Science and Bio-engineering, Beijing University of Technology, Beijing, 100022, People's Republic of China
| | - Guiran Xiao
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China.
| | - Hui-Li Wang
- School of Food and Bioengineering, Hefei University of Technology, Hefei, Anhui, 230009, People's Republic of China.
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78
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Yang T, Zang DW, Shan W, Guo AC, Wu JP, Wang YJ, Wang Q. Synthesis and Evaluations of Novel Apocynin Derivatives as Anti-Glioma Agents. Front Pharmacol 2019; 10:951. [PMID: 31551769 PMCID: PMC6733959 DOI: 10.3389/fphar.2019.00951] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 07/25/2019] [Indexed: 01/15/2023] Open
Abstract
Apocynin (4-hydroxy-3-methoxyacetophenone) is a natural polyphenolic compound with multiple biological activities. In the present study, a series of apocynin derivatives were designed and synthesized. The in silico ADMET prediction, blood–brain barrier (BBB) penetration assay, anti-NADPH oxidase activity, reactive oxygen species (ROS) levels, and anti-glioma effects of these apocynin derivatives were evaluated. The anti-glioma mechanisms of candidate compounds were studied by flow cytometer and Western blot. The results showed that D31 exhibited higher BBB penetration, increased ROS generations and significant anti-glioma effects both in vitro and in vivo. Further studies showed that D31 inhibited the activations of NF-κB pathway. Overall, our data demonstrated that D31 inhibited growth and induced apoptosis of glioma, which might be caused by ROS-related NF-κB activation. The current study suggested that D31 could be further explored for its potential use in anti-glioma therapy.
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Affiliation(s)
- Tao Yang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Da-Wei Zang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wei Shan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - An-Chen Guo
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Jian-Ping Wu
- China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Yong-Jun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Qun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Centre for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
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79
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Maki RA, Holzer M, Motamedchaboki K, Malle E, Masliah E, Marsche G, Reynolds WF. Human myeloperoxidase (hMPO) is expressed in neurons in the substantia nigra in Parkinson's disease and in the hMPO-α-synuclein-A53T mouse model, correlating with increased nitration and aggregation of α-synuclein and exacerbation of motor impairment. Free Radic Biol Med 2019; 141:115-140. [PMID: 31175983 PMCID: PMC6774439 DOI: 10.1016/j.freeradbiomed.2019.05.033] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/15/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
α-Synuclein (αSyn) is central to the neuropathology of Parkinson's disease (PD) due to its propensity for misfolding and aggregation into neurotoxic oligomers. Nitration/oxidation of αSyn leads to dityrosine crosslinking and aggregation. Myeloperoxidase (MPO) is an oxidant-generating enzyme implicated in neurodegenerative diseases. In the present work we have examined the impact of MPO in PD through analysis of postmortem PD brain and in a novel animal model in which we crossed a transgenic mouse expressing the human MPO (hMPO) gene to a mouse expressing human αSyn-A53T mutant (A53T) (hMPO-A53T). Surprisingly, our results show that in PD substantia nigra, the hMPO gene is expressed in neurons containing aggregates of nitrated αSyn as well as MPO-generated HOCl-modified epitopes. In our hMPO-A53T mouse model, we also saw hMPO expression in neurons but not mouse MPO. In the mouse model, hMPO was expressed in neurons colocalizing with nitrated αSyn, carbamylated lysine, nitrotyrosine, as well as HOCl-modified epitopes/proteins. RNAscope in situ hybridization confirmed hMPO mRNA expression in neurons. Interestingly, the hMPO protein expressed in hMPO-A53T brain is primarily the precursor proMPO, which enters the secretory pathway potentially resulting in interneuronal transmission of MPO and oxidative species. Importantly, the hMPO-A53T mouse model, when compared to the A53T model, exhibited significant exacerbation of motor impairment on rotating rods, balance beams, and wire hang tests. Further, hMPO expression in the A53T model resulted in earlier onset of end stage paralysis. Interestingly, there was a high concentration of αSyn aggregates in the stratum lacunosum moleculare of hippocampal CA2 region, which has been associated in humans with accumulation of αSyn pathology and neural atrophy in dementia with Lewy bodies. This accumulation of αSyn aggregates in CA2 was associated with markers of endoplasmic reticulum (ER) stress and the unfolded protein response with expression of activating transcription factor 4 (ATF4), C/EBP homologous protein (CHOP), MPO, and cleaved caspase-3. Together these findings suggest that MPO plays an important role in nitrative and oxidative damage that contributes to αSyn pathology in synucleinopathies.
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Affiliation(s)
- Richard A Maki
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Michael Holzer
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Austria
| | - Khatereh Motamedchaboki
- Tumor Initiation & Maintenance Program and NCI Cancer Centre Proteomics Facility, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Ernst Malle
- Gottfried Schatz Research Center, Division of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Eliezer Masliah
- Molecular Neuropathology Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA; Department Neurosciences, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA; Department of Pathology, School of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Austria
| | - Wanda F Reynolds
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
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