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Simard M, Mélançon K, Berthiaume L, Tremblay C, Pshevorskiy L, Julien P, Rajput AH, Rajput A, Calon F. Postmortem Fatty Acid Abnormalities in the Cerebellum of Patients with Essential Tremor. CEREBELLUM (LONDON, ENGLAND) 2024:10.1007/s12311-024-01736-4. [PMID: 39215908 DOI: 10.1007/s12311-024-01736-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
Fatty acids play many critical roles in brain function but have not been investigated in essential tremor (ET), a frequent movement disorder suspected to involve cerebellar dysfunction. Here, we report a postmortem comparative analysis of fatty acid profiles by gas chromatography in the cerebellar cortex from ET patients (n = 15), Parkinson's disease (PD) patients (n = 15) and Controls (n = 17). Phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI)/ phosphatidylserine (PS) were separated by thin-layer chromatography and analyzed separately. First, the total amounts of fatty acids retrieved from the cerebellar cortex were lower in ET patients compared with PD patients, including monounsaturated (MUFA) and polyunsaturated fatty acids (PUFA). The diagnosis of ET was associated with lower cerebellar levels of saturated fatty acids (SFA) and PUFA (DHA and ARA) in the PE fraction specifically, but with a higher relative content of dihomo-γ-linolenic acid (DGLA; 20:3 ω-6) in the PC fraction. In contrast, a diagnosis of PD was associated with higher absolute concentrations of SFA, MUFA and ω-6 PUFA in the PI + PS fractions. However, relative PI + PS contents of ω-6 PUFA were lower in both PD and ET patients. Finally, linear regression analyses showed that the ω-3:ω-6 PUFA ratio was positively associated with age of death, but inversely associated with insoluble α-synuclein. Although it remains unclear how these FA changes in the cerebellum are implicated in ET or PD pathophysiology, they may be related to an ongoing neurodegenerative process or to dietary intake differences. The present findings provide a window of opportunity for lipid-based therapeutic nutritional intervention.
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Affiliation(s)
- Mélissa Simard
- Faculté de Pharmacie, Université Laval, Québec, QC, Canada
| | - Koralie Mélançon
- Faculté de Pharmacie, Université Laval, Québec, QC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Room T-2-67 (CHUL) 2705 boul. Laurier, Québec, QC, G1V 4G2, Canada
| | - Line Berthiaume
- Faculté de Médecine, Université Laval, Québec, QC, Canada
- Axe Endocrinologie et Néphrologie, Centre de Recherche du CHU de Québec, Université Laval, Québec, QC, Canada
| | - Cyntia Tremblay
- Faculté de Pharmacie, Université Laval, Québec, QC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Room T-2-67 (CHUL) 2705 boul. Laurier, Québec, QC, G1V 4G2, Canada
| | - Laura Pshevorskiy
- Faculté de Pharmacie, Université Laval, Québec, QC, Canada
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Room T-2-67 (CHUL) 2705 boul. Laurier, Québec, QC, G1V 4G2, Canada
| | - Pierre Julien
- Faculté de Médecine, Université Laval, Québec, QC, Canada
- Axe Endocrinologie et Néphrologie, Centre de Recherche du CHU de Québec, Université Laval, Québec, QC, Canada
| | - Ali H Rajput
- Division of Neurology, Royal University Hospital, University of Saskatchewan, Saskatoon, SK, Canada
| | - Alex Rajput
- Division of Neurology, Royal University Hospital, University of Saskatchewan, Saskatoon, SK, Canada
| | - Frédéric Calon
- Faculté de Pharmacie, Université Laval, Québec, QC, Canada.
- Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Room T-2-67 (CHUL) 2705 boul. Laurier, Québec, QC, G1V 4G2, Canada.
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Abbaszadeh F, Javadpour P, Mousavi Nasab MM, Jorjani M. The Role of Vitamins in Spinal Cord Injury: Mechanisms and Benefits. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2024; 2024:4293391. [PMID: 38938696 PMCID: PMC11211004 DOI: 10.1155/2024/4293391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 03/18/2024] [Accepted: 06/06/2024] [Indexed: 06/29/2024]
Abstract
Spinal cord injury (SCI) is a common neurological disease worldwide, often resulting in a substantial decrease in quality of life, disability, and in severe cases, even death. Unfortunately, there is currently no effective treatment for this disease. Nevertheless, current basic and clinical evidence suggests that vitamins, with their antioxidant properties and biological functions, may play a valuable role in improving the quality of life for individuals with SCI. They can promote overall health and facilitate the healing process. In this review, we discuss the mechanisms and therapeutic potential of vitamins in the treatment of SCI.
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Affiliation(s)
- Fatemeh Abbaszadeh
- Neurobiology Research CenterShahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pegah Javadpour
- Neuroscience Research CenterShahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Masoumeh Jorjani
- Neurobiology Research CenterShahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of PharmacologySchool of MedicineShahid Beheshti University of Medical Sciences, Tehran, Iran
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Zhao C, Tu J, Wang C, Liu W, Gu J, Yin Y, Zhang S, Li D, Diao J, Zhu ZJ, Liu C. Lysophosphatidylcholine binds α-synuclein and prevents its pathological aggregation. Natl Sci Rev 2024; 11:nwae182. [PMID: 38962715 PMCID: PMC11221426 DOI: 10.1093/nsr/nwae182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/28/2024] [Accepted: 05/20/2024] [Indexed: 07/05/2024] Open
Abstract
Accumulation of aggregated α-synuclein (α-syn) in Lewy bodies is the pathological hallmark of Parkinson's disease (PD). Genetic mutations in lipid metabolism are causative for a subset of patients with Parkinsonism. The role of α-syn's lipid interactions in its function and aggregation is recognized, yet the specific lipids involved and how lipid metabolism issues trigger α-syn aggregation and neurodegeneration remain unclear. Here, we found that α-syn shows a preference for binding to lysophospholipids (LPLs), particularly targeting lysophosphatidylcholine (LPC) without relying on electrostatic interactions. LPC is capable of maintaining α-syn in a compact conformation, significantly reducing its propensity to aggregate both in vitro and within cellular environments. Conversely, a reduction in the production of cellular LPLs is associated with an increase in α-syn accumulation. Our work underscores the critical role of LPLs in preserving the natural conformation of α-syn to inhibit improper aggregation, and establishes a potential connection between lipid metabolic dysfunction and α-syn aggregation in PD.
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Affiliation(s)
- Chunyu Zhao
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia Tu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuchu Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenbin Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Jinge Gu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yandong Yin
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Shengnan Zhang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Dan Li
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200030, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Jiajie Diao
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Zheng-Jiang Zhu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
| | - Cong Liu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, China
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You Y, Tang Y, Yin W, Liu X, Gao P, Zhang C, Tembrock LR, Zhao Y, Yang Z. From genome to proteome: Comprehensive identification of venom toxins from the Chinese funnel-web spider (Macrothelidae: Macrothele yani). Int J Biol Macromol 2024; 268:131780. [PMID: 38657926 DOI: 10.1016/j.ijbiomac.2024.131780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/26/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
Macrothelidae is a family of mygalomorph spiders containing the extant genera Macrothele and Vacrothele. China is an important center of diversity for Macrothele with 65 % of the known species occurring there. Previous work on Macrothele was able to uncover several important toxin compounds including Raventoxin which may have applications in biomedicine and agricultural chemistry. Despite the importance of Macrothele spiders, high-quality reference genomes are still lacking, which hinders our understanding and application of the toxin compounds. In this study, we assembled the genome of the Macrothele yani to help fill gaps in our understanding of toxin biology in this lineage of spiders to encourage the future study and applications of these compounds. The final assembled genome was 6.79 Gb in total length, had a contig N50 of 21.44 Mb, and scaffold N50 of 156.16 Mb. Hi-C scaffolding assigned 98.19 % of the genome to 46 pseudo-chromosomes with a BUSCO score of 95.7 % for the core eukaryotic gene set. The assembled genome was found to contain 75.62 % repetitive DNA and a total of 39,687 protein-coding genes were annotated making it the spider genome with highest number of genes. Through integrated analysis of venom gland transcriptomics and venom proteomics, a total of 194 venom toxins were identified, including 38 disulfide-rich peptide neurotoxins, among which 12 were ICK knottin peptides. In summary, we present the first high-quality genome assembly at the chromosomal level for any Macrothelidae spider, filling an important gap in our knowledge of these spiders. Such high-quality genomic data will be invaluable as a reference in resolving Araneae spider phylogenies and in screening different spider species for novel compounds applicable to numerous medical and agricultural applications.
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Affiliation(s)
- Yongming You
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Yani Tang
- Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, South Waihuan Road, Chenggong District, Kunming 650500, China; MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China
| | - Wenhao Yin
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Xinxin Liu
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Pengfei Gao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Chenggui Zhang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China
| | - Luke R Tembrock
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO 80523, USA..
| | - Yu Zhao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China.
| | - Zizhong Yang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China; National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Dali 671000, China; Innovative Team of Dali University for Medicinal Insects & Arachnids Resources Digital Development, Dali 671000, China.
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Takekoshi H, Fujishima M, Miyazawa T, Higuchi O, Fujikawa T, Miyazawa T. Simultaneous Intake of Chlorella and Ascidian Ethanolamine Plasmalogen Accelerates Activation of BDNF-TrkB-CREB Signaling in Rats. Molecules 2024; 29:357. [PMID: 38257270 PMCID: PMC10819417 DOI: 10.3390/molecules29020357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/22/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays an important role in neurogenesis, synaptic plasticity, and cognition. BDNF is a neurotrophin that binds to tropomyosin receptor kinase B (TrkB), a specific receptor on target cell surfaces; it acts on neuronal formation, development, growth, and repair via transcription factors, such as cAMP response element-binding protein (CREB), and it is involved in learning and memory. BDNF expression is decreased in patients with Alzheimer's disease (AD). Exercise and the intake of several different foods or ingredients can increase BDNF expression, as confirmed with lutein, xanthophylls (polar carotenoids), and ethanolamine plasmalogen (PlsEtn), which are present at high levels in the brain. This study examined the effects of combining lutein and PlsEtn using lutein-rich Chlorella and ascidian extracts containing high levels of PlsEtn bearing docosahexaenoic acid, which is abundant in the human brain, on the activation of the BDNF-TrkB-CREB signaling pathway in the hippocampus of Sprague-Dawley rats. Although activation of the BDNF-TrkB-CREB signaling pathway in the hippocampus was not observed in Chlorella or ascidian PlsEtn monotherapy, activation was observed with combination therapy at an equal dose. The results of this study suggest that the combination of Chlorella and ascidian PlsEtn may have a preventive effect against dementia, including AD.
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Affiliation(s)
- Hideo Takekoshi
- Production and Development Department, Sun Chlorella Corp., Kyoto 600-8177, Japan;
| | - Masaki Fujishima
- Production and Development Department, Sun Chlorella Corp., Kyoto 600-8177, Japan;
| | - Taiki Miyazawa
- Food Biotechnology Platform Promoting Project, New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579, Japan; (T.M.); (O.H.); (T.M.)
| | - Ohki Higuchi
- Food Biotechnology Platform Promoting Project, New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579, Japan; (T.M.); (O.H.); (T.M.)
- Biodynamic Plant Institute Co., Ltd., Sapporo 004-0015, Japan
| | - Takahiko Fujikawa
- Laboratory of Molecular Prophylaxis and Pharmacology, Graduate School of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan;
| | - Teruo Miyazawa
- Food Biotechnology Platform Promoting Project, New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579, Japan; (T.M.); (O.H.); (T.M.)
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Kuang X, Chen S, Ye Q. The Role of Histone Deacetylases in NLRP3 Inflammasomesmediated Epilepsy. Curr Mol Med 2024; 24:980-1003. [PMID: 37519210 DOI: 10.2174/1566524023666230731095431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/08/2023] [Accepted: 06/19/2023] [Indexed: 08/01/2023]
Abstract
Epilepsy is one of the most common brain disorders that not only causes death worldwide, but also affects the daily lives of patients. Previous studies have revealed that inflammation plays an important role in the pathophysiology of epilepsy. Activation of inflammasomes can promote neuroinflammation by boosting the maturation of caspase-1 and the secretion of various inflammatory effectors, including chemokines, interleukins, and tumor necrosis factors. With the in-depth research on the mechanism of inflammasomes in the development of epilepsy, it has been discovered that NLRP3 inflammasomes may induce epilepsy by mediating neuronal inflammatory injury, neuronal loss and blood-brain barrier dysfunction. Therefore, blocking the activation of the NLRP3 inflammasomes may be a new epilepsy treatment strategy. However, the drugs that specifically block NLRP3 inflammasomes assembly has not been approved for clinical use. In this review, the mechanism of how HDACs, an inflammatory regulator, regulates the activation of NLRP3 inflammasome is summarized. It helps to explore the mechanism of the HDAC inhibitors inhibiting brain inflammatory damage so as to provide a potential therapeutic strategy for controlling the development of epilepsy.
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Affiliation(s)
- Xi Kuang
- Hainan Health Vocational College,Haikou, Hainan, 570311, China
| | - Shuang Chen
- Hubei Provincial Hospital of Integrated Chinese and Western Medicine, 430022, Hubei, China
| | - Qingmei Ye
- Hainan General Hospital & Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan, China
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Singh J, Habean ML, Panicker N. Inflammasome assembly in neurodegenerative diseases. Trends Neurosci 2023; 46:814-831. [PMID: 37633753 PMCID: PMC10530301 DOI: 10.1016/j.tins.2023.07.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/26/2023] [Accepted: 07/31/2023] [Indexed: 08/28/2023]
Abstract
Neurodegenerative disorders are characterized by the progressive dysfunction and death of selectively vulnerable neuronal populations, often associated with the accumulation of aggregated host proteins. Sustained brain inflammation and hyperactivation of inflammasome complexes have been increasingly demonstrated to contribute to neurodegenerative disease progression. Here, we review molecular mechanisms leading to inflammasome assembly in neurodegeneration. We focus primarily on four degenerative brain disorders in which inflammasome hyperactivation has been well documented: Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis (MS), and the spectrum of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). We discuss shared and divergent principles of inflammasome assembly across these disorders, and underscore the differences between neurodegeneration-associated inflammasome activation pathways and their peripheral-immune counterparts. We examine how aberrant assembly of inflammasome complexes may amplify pathology in neurodegeneration, including misfolded protein aggregation, and highlight prospects for neurotherapeutic interventions based on targeting inflammasome pathways.
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Affiliation(s)
- Jagjit Singh
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Maria L Habean
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; Biomedical Scientist Training Program (Department of Neurosciences), Case Western Reserve University, Cleveland, OH, USA
| | - Nikhil Panicker
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44106, USA; Kent State University, Neurosciences, School of Biomedical Sciences, Cleveland, OH, USA.
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Wang T, Sun Y, Dettmer U. Astrocytes in Parkinson's Disease: From Role to Possible Intervention. Cells 2023; 12:2336. [PMID: 37830550 PMCID: PMC10572093 DOI: 10.3390/cells12192336] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the loss of dopaminergic neurons. While neuronal dysfunction is central to PD, astrocytes also play important roles, both positive and negative, and such roles have not yet been fully explored. This literature review serves to highlight these roles and how the properties of astrocytes can be used to increase neuron survivability. Astrocytes normally have protective functions, such as releasing neurotrophic factors, metabolizing glutamate, transferring healthy mitochondria to neurons, or maintaining the blood-brain barrier. However, in PD, astrocytes can become dysfunctional and contribute to neurotoxicity, e.g., via impaired glutamate metabolism or the release of inflammatory cytokines. Therefore, astrocytes represent a double-edged sword. Restoring healthy astrocyte function and increasing the beneficial effects of astrocytes represents a promising therapeutic approach. Strategies such as promoting neurotrophin release, preventing harmful astrocyte reactivity, or utilizing regional astrocyte diversity may help restore neuroprotection.
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Affiliation(s)
- Tianyou Wang
- Collège Jean-de-Brébeuf, 3200 Chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C1, Canada
| | - Yingqi Sun
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK;
| | - Ulf Dettmer
- Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA;
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Liao XX, Hu K, Xie XH, Wen YL, Wang R, Hu ZW, Zhou YL, Li JJ, Wu MK, Yu JX, Chen JW, Ren P, Wu XY, Zhou JJ. Banxia Xiexin decoction alleviates AS co-depression disease by regulating the gut microbiome-lipid metabolic axis. JOURNAL OF ETHNOPHARMACOLOGY 2023; 313:116468. [PMID: 37044233 DOI: 10.1016/j.jep.2023.116468] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 05/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Banxia Xiexin decoction (BXD) is a classic Chinese herbal formulation consisting of 7 herbs including Pinelliae Rhizoma, Scutellariae Radix, Zingiberis Rhizoma, Ginseng Radix, Glycyrrhizae Radix, Coptidis Rhizoma, and Jujubae Fructus, which can exert effects on lowering lipids and alleviating depressive mood disorders via affecting gastrointestinal tract. AIM OF THE STUDY The pathogenesis of atherosclerosis (AS) co-depression disease has not been well studied, and the current clinical treatment strategies are not satisfactory. As a result, it is critical to find novel methods of treatment. Based on the hypothesis that the gut microbiome may promote the development of AS co-depression disease by regulating host lipid metabolism, this study sought to evaluate the effectiveness and action mechanism of BXD in regulation of the gut microbiome via an intervention in AS co-depression mice. MATERIALS AND METHODS To determine the primary constituents of BXD, UPLC-Q/TOF-MS analysis was carried out. Sixteen C56BL/6 mice were fed normal chow as a control group; 64 ApoE-/- mice were randomized into four groups (model group and three treatment groups) and fed high-fat chow combined with daily bind stimulation for sixteen weeks to develop the AS co-depression mouse model and were administered saline or low, medium or high concentrations of BXD during the experimental modeling period. The antidepressant efficacy of BXD was examined by weighing, a sucrose preference test, an open field test, and a tail suspension experiment. The effectiveness of BXD as an anti-AS treatment was evaluated by means of biochemical indices, the HE staining method, and the Oil red O staining method. The impacts of BXD on the gut microbiome structure and brain (hippocampus and prefrontal cortex tissue) lipids in mice with the AS co-depression model were examined by 16S rDNA sequencing combined with lipidomics analysis. RESULTS The main components of BXD include baicalin, berberine, ginsenoside Rb1, and 18 other substances. BXD could improve depression-like behavioral characteristics and AS-related indices in AS co-depression mice; BXD could regulate the abundance of some flora (phylum level: reduced abundance of Proteobacteria and Deferribacteres; genus level: reduced abundance of Clostridium_IV, Helicobacter, and Pseudoflavonifractor, Acetatifactor, Oscillibacter, which were significantly different). The lipidomics analysis showed that the differential lipids between the model and gavaged high-dose BXD (BXH) groups were enriched in glycerophospholipid metabolism, and lysophosphatidylcholine (LPC(20:3)(rep)(rep)) in the hippocampus and LPC(20:4)(rep) in the prefrontal cortex both showed downregulation in BXH. The correlation analysis illustrated that the screened differential lipids were mainly linked to Deferribacteres and Actinobacteria. CONCLUSION BXD may exert an anti-AS co-depression therapeutic effect by modulating the abundance of some flora and thus intervening in peripheral lipid and brain lipid metabolism (via downregulation of LPC levels).
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Affiliation(s)
- Xing-Xing Liao
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Ke Hu
- Department of Rehabilitation Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Xin-Hua Xie
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, 341000, China
| | - You-Liang Wen
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Rui Wang
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Zi-Wei Hu
- Department of Rehabilitation, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Yu-Long Zhou
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Jia-Jun Li
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Ming-Kun Wu
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Jing-Xuan Yu
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Jia-Wei Chen
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Peng Ren
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Xiao-Yun Wu
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China.
| | - Jun-Jie Zhou
- School of Rehabilitation Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China; Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, 341000, China.
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Ni WF, Zhou KL, Zhang HJ, Chen YT, Hu XL, Cai WT, Wang XY. Functions and mechanisms of cytosolic phospholipase A 2 in central nervous system trauma. Neural Regen Res 2023; 18:258-266. [PMID: 35900400 PMCID: PMC9396495 DOI: 10.4103/1673-5374.346460] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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11
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Maurer-Morelli CV, de Vasconcellos JF, Bruxel EM, Rocha CS, do Canto AM, Tedeschi H, Yasuda CL, Cendes F, Lopes-Cendes I. Gene expression profile suggests different mechanisms underlying sporadic and familial mesial temporal lobe epilepsy. Exp Biol Med (Maywood) 2022; 247:2233-2250. [PMID: 36259630 PMCID: PMC9899983 DOI: 10.1177/15353702221126666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Most patients with pharmacoresistant mesial temporal lobe epilepsy (MTLE) have hippocampal sclerosis on the postoperative histopathological examination. Although most patients with MTLE do not refer to a family history of the disease, familial forms of MTLE have been reported. We studied surgical specimens from patients with MTLE who had epilepsy surgery for medically intractable seizures. We assessed and compared gene expression profiles of the tissue lesion found in patients with familial MTLE (n = 3) and sporadic MTLE (n = 5). In addition, we used data from control hippocampi obtained from a public database (n = 7). We obtained expression profiles using the Human Genome U133 Plus 2.0 (Affymetrix) microarray platform. Overall, the molecular profile identified in familial MTLE differed from that in sporadic MTLE. In the tissue of patients with familial MTLE, we found an over-representation of the biological pathways related to protein response, mRNA processing, and synaptic plasticity and function. In sporadic MTLE, the gene expression profile suggests that the inflammatory response is highly activated. In addition, we found enrichment of gene sets involved in inflammatory cytokines and mediators and chemokine receptor pathways in both groups. However, in sporadic MTLE, we also found enrichment of epidermal growth factor signaling, prostaglandin synthesis and regulation, and microglia pathogen phagocytosis pathways. Furthermore, based on the gene expression signatures, we identified different potential compounds to treat patients with familial and sporadic MTLE. To our knowledge, this is the first study assessing the mRNA profile in surgical tissue obtained from patients with familial MTLE and comparing it with sporadic MTLE. Our results clearly show that, despite phenotypic similarities, both forms of MTLE present distinct molecular signatures, thus suggesting different underlying molecular mechanisms that may require distinct therapeutic approaches.
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Affiliation(s)
- Claudia V Maurer-Morelli
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil
| | - Jaira F de Vasconcellos
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Department of Biology, James Madison
University, Harrisonburg, VA 22807, USA
| | - Estela M Bruxel
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil
| | - Cristiane S Rocha
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil
| | - Amanda M do Canto
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil
| | - Helder Tedeschi
- Department of Neurology, School of
Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, Brazil
| | - Clarissa L Yasuda
- Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil,Department of Neurology, School of
Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, Brazil
| | - Fernando Cendes
- Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil,Department of Neurology, School of
Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, Brazil
| | - Iscia Lopes-Cendes
- Department of Translational Medicine,
School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-888,
Brazil,Brazilian Institute of Neuroscience and
Neurotechnology (BRAINN), Campinas 13083-888, Brazil,Iscia Lopes-Cendes.
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12
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Shim KH, Sharma N, An SSA. Prion therapeutics: Lessons from the past. Prion 2022; 16:265-294. [PMID: 36515657 PMCID: PMC9754114 DOI: 10.1080/19336896.2022.2153551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 12/15/2022] Open
Abstract
Prion diseases are a group of incurable zoonotic neurodegenerative diseases (NDDs) in humans and other animals caused by the prion proteins. The abnormal folding and aggregation of the soluble cellular prion proteins (PrPC) into scrapie isoform (PrPSc) in the Central nervous system (CNS) resulted in brain damage and other neurological symptoms. Different therapeutic approaches, including stalling PrPC to PrPSc conversion, increasing PrPSc removal, and PrPC stabilization, for which a spectrum of compounds, ranging from organic compounds to antibodies, have been explored. Additionally, a non-PrP targeted drug strategy using serpin inhibitors has been discussed. Despite numerous scaffolds being screened for anti-prion activity in vitro, only a few were effective in vivo and unfortunately, almost none of them proved effective in the clinical studies, most likely due to toxicity and lack of permeability. Recently, encouraging results from a prion-protein monoclonal antibody, PRN100, were presented in the first human trial on CJD patients, which gives a hope for better future for the discovery of other new molecules to treat prion diseases. In this comprehensive review, we have re-visited the history and discussed various classes of anti-prion agents, their structure, mode of action, and toxicity. Understanding pathogenesis would be vital for developing future treatments for prion diseases. Based on the outcomes of existing therapies, new anti-prion agents could be identified/synthesized/designed with reduced toxicity and increased bioavailability, which could probably be effective in treating prion diseases.
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Affiliation(s)
- Kyu Hwan Shim
- Department of Bionano Technology, Gachon University, Seongnam, South Korea
| | - Niti Sharma
- Department of Bionano Technology, Gachon University, Seongnam, South Korea
| | - Seong Soo A An
- Department of Bionano Technology, Gachon University, Seongnam, South Korea
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13
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Tian Z, Feng B, Wang XQ, Tian J. Focusing on cyclin-dependent kinases 5: A potential target for neurological disorders. Front Mol Neurosci 2022; 15:1030639. [PMID: 36438186 PMCID: PMC9687395 DOI: 10.3389/fnmol.2022.1030639] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/25/2022] [Indexed: 11/20/2023] Open
Abstract
Cyclin-dependent kinases 5 (Cdk5) is a special member of proline-directed serine threonine kinase family. Unlike other Cdks, Cdk5 is not directly involved in cell cycle regulation but plays important roles in nervous system functions. Under physiological conditions, the activity of Cdk5 is tightly controlled by p35 or p39, which are specific activators of Cdk5 and highly expressed in post-mitotic neurons. However, they will be cleaved into the corresponding truncated forms namely p25 and p29 under pathological conditions, such as neurodegenerative diseases and neurotoxic insults. The binding to truncated co-activators results in aberrant Cdk5 activity and contributes to the initiation and progression of multiple neurological disorders through affecting the down-stream targets. Although Cdk5 kinase activity is mainly regulated through combining with co-activators, it is not the only way. Post-translational modifications of Cdk5 including phosphorylation, S-nitrosylation, sumoylation, and acetylation can also affect its kinase activity and then participate in physiological and pathological processes of nervous system. In this review, we focus on the regulatory mechanisms of Cdk5 and its roles in a series of common neurological disorders such as neurodegenerative diseases, stroke, anxiety/depression, pathological pain and epilepsy.
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Affiliation(s)
- Zhen Tian
- College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Bin Feng
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Pharmacy, School of Stomatology, Fourth Military Medical University, Xi’an, China
| | - Xing-Qin Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jiao Tian
- Department of Infection, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, The First Batch of Key Disciplines On Public Health in Chongqing, Chongqing, China
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14
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Khazimullina YZ, Gimadieva AR, Khairullina VR, Zainullina LF, Vakhitova YV, Mustafin AG. The Synthesis and Anti-inflammatory Studies of New Pyrimidine Derivatives, Inhibitors of Cyclooxygenase Isoforms. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1068162022050107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Muacevic A, Adler JR. Management and Treatment of Traumatic Brain Injuries. Cureus 2022; 14:e30617. [PMID: 36426314 PMCID: PMC9681696 DOI: 10.7759/cureus.30617] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/23/2022] [Indexed: 01/25/2023] Open
Abstract
Traumatic brain injuries (TBI) are one of the main reasons for death in recent years worldwide or globally. They are the number one cause of death for both civilians and military members. It affects how the brain functions and is currently one of the crucial concerns of global public health issues. TBI is increasing worldwide because of the increasing dependency on motorized vehicles and machinery. One of the reasons for TBI is the expanding human population. It is the major cause of death and disability in the world. In young adults around the world, it is the main cause of mortality and morbidity. Its complicated etiology and pathogenesis include primarily primary and secondary injury types. Neuroinflammation is also focused on TBI to be cured. The neuroprotection of the injured brain has received tremendous attention during TBI treatment. In this review, we will first discuss the definition of traumatic brain injury, its causes, and the symptoms experienced by patients of various age groups. Finally, treatment methods and advances in treatment will be discussed. In this review, the aftereffects of traumatic brain damage are also covered. Ferroptosis and choline phospholipids are also emphasized as important components of the treatment of traumatic brain damage in this review.
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16
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Kemble AM, Hornsperger B, Ruf I, Richter H, Benz J, Kuhn B, Heer D, Wittwer M, Engelhardt B, Grether U, Collin L. A potent and selective inhibitor for the modulation of MAGL activity in the neurovasculature. PLoS One 2022; 17:e0268590. [PMID: 36084029 PMCID: PMC9462760 DOI: 10.1371/journal.pone.0268590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/23/2022] [Indexed: 11/21/2022] Open
Abstract
Chronic inflammation and blood–brain barrier dysfunction are key pathological hallmarks of neurological disorders such as multiple sclerosis, Alzheimer’s disease and Parkinson’s disease. Major drivers of these pathologies include pro-inflammatory stimuli such as prostaglandins, which are produced in the central nervous system by the oxidation of arachidonic acid in a reaction catalyzed by the cyclooxygenases COX1 and COX2. Monoacylglycerol lipase hydrolyzes the endocannabinoid signaling lipid 2-arachidonyl glycerol, enhancing local pools of arachidonic acid in the brain and leading to cyclooxygenase-mediated prostaglandin production and neuroinflammation. Monoacylglycerol lipase inhibitors were recently shown to act as effective anti-inflammatory modulators, increasing 2-arachidonyl glycerol levels while reducing levels of arachidonic acid and prostaglandins, including PGE2 and PGD2. In this study, we characterized a novel, highly selective, potent and reversible monoacylglycerol lipase inhibitor (MAGLi 432) in a mouse model of lipopolysaccharide-induced blood–brain barrier permeability and in both human and mouse cells of the neurovascular unit: brain microvascular endothelial cells, pericytes and astrocytes. We confirmed the expression of monoacylglycerol lipase in specific neurovascular unit cells in vitro, with pericytes showing the highest expression level and activity. However, MAGLi 432 did not ameliorate lipopolysaccharide-induced blood–brain barrier permeability in vivo or reduce the production of pro-inflammatory cytokines in the brain. Our data confirm monoacylglycerol lipase expression in mouse and human cells of the neurovascular unit and provide the basis for further cell-specific analysis of MAGLi 432 in the context of blood–brain barrier dysfunction caused by inflammatory insults.
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Affiliation(s)
- Alicia M. Kemble
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Benoit Hornsperger
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Iris Ruf
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Hans Richter
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Jörg Benz
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Bernd Kuhn
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Dominik Heer
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Matthias Wittwer
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | | | - Uwe Grether
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
| | - Ludovic Collin
- Roche Pharma Research & Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd., Basel, Switzerland
- * E-mail:
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17
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Reemst K, Broos JY, Abbink MR, Cimetti C, Giera M, Kooij G, Korosi A. Early-life stress and dietary fatty acids impact the brain lipid/oxylipin profile into adulthood, basally and in response to LPS. Front Immunol 2022; 13:967437. [PMID: 36131915 PMCID: PMC9484596 DOI: 10.3389/fimmu.2022.967437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/04/2022] [Indexed: 01/06/2023] Open
Abstract
Brain lipid dysregulation is a hallmark of depression and Alzheimer's disease, also marked by chronic inflammation. Early-life stress (ELS) and dietary intake of polyunsaturated fatty acids (PUFAs) are risk factors for these pathologies and are known to impact inflammatory processes. However, if these early-life factors alter brain lipid homeostasis on the long-term and thereby contribute to this risk remains to be elucidated. We have recently shown that an early diet enriched in omega(ω)-3 PUFAs protected against the long-term negative effects of ELS on cognition and neuroinflammation. Here, we aim to understand if modulation of brain lipid and oxylipin profiles contributes to the detrimental effects of ELS and the protective ones of the diet. We therefore studied if and how ELS and early dietary PUFAs modulate the brain lipid and oxylipin profile, basally as well as in response to an inflammatory challenge, to unmask possible latent effects. Male mice were exposed to ELS via the limited bedding and nesting paradigm, received an early diet with high or low ω6/ω3 ratio (HRD and LRD) and were injected with saline or lipopolysaccharide (LPS) in adulthood. Twenty-four hours later plasma cytokines (Multiplex) and hypothalamic lipids and oxylipins (liquid chromatography tandem mass spectrometry) were measured. ELS exacerbated the LPS-induced increase in IL-6, CXCL1 and CCL2. Both ELS and diet affected the lipid/oxylipin profile long-term. For example, ELS increased diacylglycerol and LRD reduced triacylglycerol, free fatty acids and ceramides. Importantly, the ELS-induced alterations were strongly influenced by the early diet. For example, the ELS-induced decrease in eicosapentaenoic acid was reversed when fed LRD. Similarly, the majority of the LPS-induced alterations were distinct for control and ELS exposed mice and unique for mice fed with LRD or HRD. LPS decreased ceramides and lysophosphotidylcholine, increased hexosylceramides and prostaglandin E2, reduced triacylglycerol species and ω6-derived oxylipins only in mice fed LRD and ELS reduced the LPS-induced increase in phosphatidylcholine. These data give further insights into the alterations in brain lipids and oxylipins that might contribute to the detrimental effects of ELS, to the protective ones of LRD and the possible early-origin of brain lipid dyshomeostasis characterizing ELS-related psychopathologies.
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Affiliation(s)
- Kitty Reemst
- Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, Science Park, Amsterdam, Netherlands
| | - Jelle Y. Broos
- Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, Multiple Sclerosis (MS) Center Amsterdam, Amsterdam, Netherlands,Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands
| | - Maralinde R. Abbink
- Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, Science Park, Amsterdam, Netherlands
| | - Chiara Cimetti
- Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, Science Park, Amsterdam, Netherlands
| | - Martin Giera
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands
| | - Gijs Kooij
- Amsterdam University Medical Center (UMC), Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, Multiple Sclerosis (MS) Center Amsterdam, Amsterdam, Netherlands
| | - Aniko Korosi
- Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, Science Park, Amsterdam, Netherlands,*Correspondence: Aniko Korosi,
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18
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El-Ansary A, Al-Onazi M, Alhowikan AM, Alghamdi MA, Al-Ayadhi L. Assessment of a combination of plasma anti-histone autoantibodies and PLA2/PE ratio as potential biomarkers to clinically predict autism spectrum disorders. Sci Rep 2022; 12:13359. [PMID: 35922658 PMCID: PMC9349315 DOI: 10.1038/s41598-022-17533-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 07/27/2022] [Indexed: 11/15/2022] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficiencies in social interaction and repetitive behaviors. Multiple studies have reported abnormal cell membrane composition and autoimmunity as known mechanisms associated with the etiopathogenesis of ASD. In this study, multiple regression and combined receiver operating characteristic (ROC) curve as statistic tools were done to clarify the relationship between phospholipase A2 and phosphatidylethanolamine (PE) ratio (PLA2/PE) as marker of lipid metabolism and membrane fluidity, and antihistone-autoantibodies as marker of autoimmunity in the etiopathology of ASD. Furthermore, the study intended to define the linear combination that maximizes the partial area under an ROC curve for a panel of markers. Forty five children with ASD and forty age- and sex-matched controls were enrolled in the study. Using ELISA, the levels of antihistone-autoantibodies, and PLA2 were measured in the plasma of both groups. PE was measured using HPLC. Statistical analyses using ROC curves and multiple and logistic regression models were performed. A notable rise in the area under the curve was detected using combined ROC curve models. Additionally, higher specificity and sensitivity of the combined markers were documented. The present study indicates that the measurement of the predictive value of selected biomarkers related to autoimmunity and lipid metabolism in children with ASD using a ROC curve analysis should lead to a better understanding of the pathophysiological mechanism of ASD and its link with metabolism. This information may enable the early diagnosis and intervention.
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Affiliation(s)
- Afaf El-Ansary
- Central Research Laboratory, Female Center for Medical Studies and Scientific Section, King Saud University, P.O Box 22452, Riyadh, 11495, Saudi Arabia.
- Department of Chemistry, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box. 90950, Riyadh, 11623, Saudi Arabia.
| | - Mona Al-Onazi
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Mashael A Alghamdi
- Department of Chemistry, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box. 90950, Riyadh, 11623, Saudi Arabia
| | - Laila Al-Ayadhi
- Department of Physiology, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
- Autism Research and Treatment Center, Riyadh, Saudi Arabia
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19
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A Novel Continuous Enzyme Coupled Colorimetric Assay for Phospholipase A2 and its Application in the Determination of Catalytic Activity of Oil-Body–Associated Oleosin Protein. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02284-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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20
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Li HC, Zhang JM, Xu R, Wang YH, Xu W, Chen R, Wan XM, Zhang HL, Wang L, Wang XJ, Jiang LH, Liu B, Zhao Y, Chen YY, Dai YP, Li M, Zhang HQ, Yang Z, Bai L, Zhang J, Wang HB, Tian JW, Zhao YL, Cen XB. mTOR regulates cocaine-induced behavioural sensitization through the SynDIG1-GluA2 interaction in the nucleus accumbens. Acta Pharmacol Sin 2022; 43:295-306. [PMID: 34522005 PMCID: PMC8792044 DOI: 10.1038/s41401-021-00760-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 08/08/2021] [Indexed: 02/05/2023] Open
Abstract
Behavioral sensitization is a progressive increase in locomotor or stereotypic behaviours in response to drugs. It is believed to contribute to the reinforcing properties of drugs and to play an important role in relapse after cessation of drug abuse. However, the mechanism underlying this behaviour remains poorly understood. In this study, we showed that mTOR signaling was activated during the expression of behavioral sensitization to cocaine and that intraperitoneal or intra-nucleus accumbens (NAc) treatment with rapamycin, a specific mTOR inhibitor, attenuated cocaine-induced behavioural sensitization. Cocaine significantly modified brain lipid profiles in the NAc of cocaine-sensitized mice and markedly elevated the levels of phosphatidylinositol-4-monophosphates (PIPs), including PIP, PIP2, and PIP3. The behavioural effect of cocaine was attenuated by intra-NAc administration of LY294002, an AKT-specific inhibitor, suggesting that PIPs may contribute to mTOR activation in response to cocaine. An RNA-sequencing analysis of the downstream effectors of mTOR signalling revealed that cocaine significantly decreased the expression of SynDIG1, a known substrate of mTOR signalling, and decreased the surface expression of GluA2. In contrast, AAV-mediated SynDIG1 overexpression in NAc attenuated intracellular GluA2 internalization by promoting the SynDIG1-GluA2 interaction, thus maintaining GluA2 surface expression and repressing cocaine-induced behaviours. In conclusion, NAc SynDIG1 may play a negative regulatory role in cocaine-induced behavioural sensitization by regulating synaptic surface expression of GluA2.
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Affiliation(s)
- Hong-chun Li
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jia-mei Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Rui Xu
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yong-hai Wang
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Wei Xu
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Rong Chen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xue-mei Wan
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hao-luo Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Liang Wang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xiao-jie Wang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Lin-hong Jiang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Bin Liu
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Ying Zhao
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yuan-yuan Chen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Yan-ping Dai
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Min Li
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hua-qin Zhang
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Zhen Yang
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Lin Bai
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jie Zhang
- grid.13291.380000 0001 0807 1581Histology and Imaging Platform, Core Facilities of West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Hong-bo Wang
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Jing-wei Tian
- grid.440761.00000 0000 9030 0162Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005 China
| | - Ying-lan Zhao
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Xiao-bo Cen
- grid.13291.380000 0001 0807 1581National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041 China
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21
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Citicoline and COVID-19-Related Cognitive and Other Neurologic Complications. Brain Sci 2021; 12:brainsci12010059. [PMID: 35053804 PMCID: PMC8782421 DOI: 10.3390/brainsci12010059] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 02/07/2023] Open
Abstract
With growing concerns about COVID-19’s hyperinflammatory condition and its potentially damaging impact on the neurovascular system, there is a need to consider potential treatment options for managing short- and long-term effects on neurological complications, especially cognitive function. While maintaining adequate structure and function of phospholipid in brain cells, citicoline, identical to the natural metabolite phospholipid phosphatidylcholine precursor, can contribute to a variety of neurological diseases and hypothetically toward post-COVID-19 cognitive effects. In this review, we comprehensively describe in detail the potential citicoline mechanisms as adjunctive therapy and prevention of COVID-19-related cognitive decline and other neurologic complications through citicoline properties of anti-inflammation, anti-viral, neuroprotection, neurorestorative, and acetylcholine neurotransmitter synthesis, and provide a recommendation for future clinical trials.
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22
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Schreiber JA, Tajuddin NF, Kouzoukas DE, Kevala K, Kim HY, Collins MA. Moderate blood alcohol and brain neurovulnerability: Selective depletion of calcium-independent phospholipase A2, omega-3 docosahexaenoic acid, and its synaptamide derivative as a potential harbinger of deficits in anti-inflammatory reserve. Alcohol Clin Exp Res 2021; 45:2506-2517. [PMID: 34719812 PMCID: PMC11049540 DOI: 10.1111/acer.14734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 09/30/2021] [Accepted: 10/26/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Repetitive, highly elevated blood alcohol (ethanol) concentrations (BACs) of 350 to 450 mg/dl over several days cause brain neurodegeneration and coincident neuroinflammation in adult rats localized in the hippocampus (HC), temporal cortex (especially the entorhinal cortex; ECX), and olfactory bulb (OB). The profuse neuroinflammation involves microgliosis, increased proinflammatory cytokines, and elevations of Ca+2 -dependent phospholipase A2 (cPLA2) and secretory PLA2 (sPLA2), which both mobilize proinflammatory ω-6 arachidonic acid (ARA). In contrast, Ca+2 -independent PLA2 (iPLA2) and anti-inflammatory ω-3 docosahexaenoic acid (DHA), a polyunsaturated fatty acid regulated primarily by iPLA2, are diminished. Furthermore, supplemented DHA exerts neuroprotection. Given uncertainties about the possible effects of lower circulating BACs that are common occurring during short- term binges, we examined how moderate BACs affected the above inflammatory events, and the impact of supplemented DHA. METHODS AND RESULTS Young adult male rats sustaining upper-moderate BACs (~150 mg/dl) from once-daily alcohol intubations were sacrificed with appropriate controls after 1 week. The HC, ECX and OB were quantitatively examined using immunoblotting, neurodegeneration staining, and lipidomics assays. Whereas neurodegeneration, increases in cPLA2 IVA, sPLA2 IIA, and ARA, and microglial activation were not detected, the HC and ECX regions demonstrated significantly reduced iPLA2 levels. Levels of DHA and synaptamide, its anti-inflammatory N-docosahexaenoylethanolamide derivative, also were lower in HC, and DHA supplementation prevented the iPLA2 decrements in HC. Additionally, adult mice maintaining upper-moderate BACs from limited alcohol binges had reduced midbrain iPLA2 levels. CONCLUSIONS The apparently selective depletion by moderate BACs of the metabolically linked anti-inflammatory triad of hippocampal iPLA2, DHA, and synaptamide, and of iPLA2 in the ECX, potentially indicates an unappreciated deficit in brain anti-inflammatory reserve that may be a harbinger of regional neurovulnerability.
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Affiliation(s)
- Jennifer A Schreiber
- Neuroscience Graduate Program, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
- Alcohol Research Program, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
- Research Service, Edward Hines Jr. VA Hospital, Hines, Illinois, USA
| | - Nuzhath F Tajuddin
- Molecular Pharmacology and Neuroscience, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
| | - Dimitrios E Kouzoukas
- Research Service, Edward Hines Jr. VA Hospital, Hines, Illinois, USA
- Molecular Pharmacology and Neuroscience, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
| | - Karl Kevala
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Hee-Yong Kim
- Laboratory of Molecular Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Michael A Collins
- Neuroscience Graduate Program, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
- Alcohol Research Program, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
- Molecular Pharmacology and Neuroscience, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois, USA
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Dynamic Role of Phospholipases A2 in Health and Diseases in the Central Nervous System. Cells 2021; 10:cells10112963. [PMID: 34831185 PMCID: PMC8616333 DOI: 10.3390/cells10112963] [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: 09/30/2021] [Revised: 10/19/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022] Open
Abstract
Phospholipids are major components in the lipid bilayer of cell membranes. These molecules are comprised of two acyl or alkyl groups and different phospho-base groups linked to the glycerol backbone. Over the years, substantial interest has focused on metabolism of phospholipids by phospholipases and the role of their metabolic products in mediating cell functions. The high levels of polyunsaturated fatty acids (PUFA) in the central nervous system (CNS) have led to studies centered on phospholipases A2 (PLA2s), enzymes responsible for cleaving the acyl groups at the sn-2 position of the phospholipids and resulting in production of PUFA and lysophospholipids. Among the many subtypes of PLA2s, studies have centered on three major types of PLA2s, namely, the calcium-dependent cytosolic cPLA2, the calcium-independent iPLA2 and the secretory sPLA2. These PLA2s are different in their molecular structures, cellular localization and, thus, production of lipid mediators with diverse functions. In the past, studies on specific role of PLA2 on cells in the CNS are limited, partly because of the complex cellular make-up of the nervous tissue. However, understanding of the molecular actions of these PLA2s have improved with recent advances in techniques for separation and isolation of specific cell types in the brain tissue as well as development of sensitive molecular tools for analyses of proteins and lipids. A major goal here is to summarize recent studies on the characteristics and dynamic roles of the three major types of PLA2s and their oxidative products towards brain health and neurological disorders.
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Javaid S, Farooq T, Rehman Z, Afzal A, Ashraf W, Rasool MF, Alqahtani F, Alsanea S, Alasmari F, Alanazi MM, Alharbi M, Imran I. Dynamics of Choline-Containing Phospholipids in Traumatic Brain Injury and Associated Comorbidities. Int J Mol Sci 2021; 22:ijms222111313. [PMID: 34768742 PMCID: PMC8583393 DOI: 10.3390/ijms222111313] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 01/01/2023] Open
Abstract
The incidences of traumatic brain injuries (TBIs) are increasing globally because of expanding population and increased dependencies on motorized vehicles and machines. This has resulted in increased socio-economic burden on the healthcare system, as TBIs are often associated with mental and physical morbidities with lifelong dependencies, and have severely limited therapeutic options. There is an emerging need to identify the molecular mechanisms orchestrating these injuries to life-long neurodegenerative disease and a therapeutic strategy to counter them. This review highlights the dynamics and role of choline-containing phospholipids during TBIs and how they can be used to evaluate the severity of injuries and later targeted to mitigate neuro-degradation, based on clinical and preclinical studies. Choline-based phospholipids are involved in maintaining the structural integrity of the neuronal/glial cell membranes and are simultaneously the essential component of various biochemical pathways, such as cholinergic neuronal transmission in the brain. Choline or its metabolite levels increase during acute and chronic phases of TBI because of excitotoxicity, ischemia and oxidative stress; this can serve as useful biomarker to predict the severity and prognosis of TBIs. Moreover, the effect of choline-replenishing agents as a post-TBI management strategy has been reviewed in clinical and preclinical studies. Overall, this review determines the theranostic potential of choline phospholipids and provides new insights in the management of TBI.
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Affiliation(s)
- Sana Javaid
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
- Department of Pharmacy, The Women University, Multan 60000, Pakistan
| | - Talha Farooq
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
| | - Zohabia Rehman
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
| | - Ammara Afzal
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
| | - Waseem Ashraf
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
| | - Muhammad Fawad Rasool
- Department of Pharmacy Practice, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan;
| | - Faleh Alqahtani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.A.); (F.A.); (M.M.A.); (M.A.)
- Correspondence: ; Tel.: +966-114697749
| | - Sary Alsanea
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.A.); (F.A.); (M.M.A.); (M.A.)
| | - Fawaz Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.A.); (F.A.); (M.M.A.); (M.A.)
| | - Mohammed Mufadhe Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.A.); (F.A.); (M.M.A.); (M.A.)
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (S.A.); (F.A.); (M.M.A.); (M.A.)
| | - Imran Imran
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan; (S.J.); (T.F.); (Z.R.); (A.A.); (W.A.); (I.I.)
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25
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Pei-Chen Chang J. Personalised medicine in child and Adolescent Psychiatry: Focus on omega-3 polyunsaturated fatty acids and ADHD. Brain Behav Immun Health 2021; 16:100310. [PMID: 34589802 PMCID: PMC8474554 DOI: 10.1016/j.bbih.2021.100310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/27/2021] [Accepted: 07/27/2021] [Indexed: 12/28/2022] Open
Abstract
Attention deficit hyperactivity disorder, or ADHD, is a common childhood disorder with a prevalence rate of 5–10%. There have been many theories proposed to explain ADHD, and one of them focuses on the deficiency of essential fatty acids (EFA), particularly omega-3 polyunsaturated fatty acids (n-3 PUFAs) including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). Studies have shown that there is a positive correlation between EFA deficiency severity and ADHD symptoms, and a negative association between blood PUFAs levels and ADHD symptoms. Moreover, clinical studies have shown a promising effect of n-3 PUFAs in the treatment of both clinical and cognitive symptoms in children with ADHD. In addition, with the more relatively safe and tolerable properties of n-3 PUFAs when comparing with the standard pharmacotherapy, n-3 PUFAs may be a potential treatment option for children with ADHD. Of note, the association between n-3 PUFAs deficiency and ADHD has been suggested to involve several biological systems, including inflammation, dysregulation of the hypothalamus-pituitary-adrenal (HPA) axis and the autonomic nervous system (ANS), and an imbalanced gut-microbiota axis (GBA). Thus, the biomarkers from these biological systems may serve as possible treatment response predictors of n-3 PUFAs in children with ADHD. Children with ADHD have lower levels of DHA, EPA and total n-3 PUFAs •N-3 PUFAs improved clinical and cognitive symptoms in children with ADHD •Inflammatory status and endogenous n-3 PUFAs levels may serve as treatment response predictors •N-3 PUFAs may be a treatment option for a subgroup of children with ADHD
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Affiliation(s)
- Jane Pei-Chen Chang
- Mind-Body Interface Lab (MBI-Lab) and Child Psychiatry Division, Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan.,Department of Psychiatry, College of Medicine, China Medical University, Taichung, Taiwan.,Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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26
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Goulding SR, Lévesque M, Sullivan AM, Collins LM, O'Keeffe GW. Quinacrine and Niclosamide Promote Neurite Growth in Midbrain Dopaminergic Neurons Through the Canonical BMP-Smad Pathway and Protect Against Neurotoxin and α-Synuclein-Induced Neurodegeneration. Mol Neurobiol 2021; 58:3405-3416. [PMID: 33713017 DOI: 10.1007/s12035-021-02351-8] [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: 12/09/2020] [Accepted: 03/05/2021] [Indexed: 11/25/2022]
Abstract
Parkinson's disease is a neurodegenerative disorder characterised by nigrostriatal dopaminergic degeneration, and intracellular α-synuclein aggregation. Current pharmacological treatments are solely symptomatic so there is a need to identify agents that can slow or stop dopaminergic degeneration. One proposed class of therapeutics are neurotrophic factors which promote the survival of nigrostriatal dopaminergic neurons. However, neurotrophic factors need to be delivered directly to the brain. An alternative approach may be to identify pharmacological agents which can reach the brain to stimulate neurotrophic factor expression and/or their signalling pathways in dopaminergic neurons. BMP2 is a neurotrophic factor that is expressed in the human substantia nigra; exogenous BMP2 administration protects against dopaminergic degeneration in in vitro models of PD. In this study, we investigated the neurotrophic potential of two FDA-approved drugs, quinacrine and niclosamide, that are modulators of BMP2 signalling. We report that quinacrine and niclosamide, like BMP2, significantly increased neurite length, as a readout of neurotrophic action, in SH-SY5Y cells and dopaminergic neurons in primary cultures of rat ventral mesencephalon. We also show that these effects of quinacrine and niclosamide require the activation of BMP-Smad signalling. Finally, we demonstrate that quinacrine and niclosamide are neuroprotective against degeneration induced by the neurotoxins, MPP+ and 6-OHDA, and by viral-mediated overexpression of α-synuclein in vitro. Collectively, this study identifies two drugs, that are safe for use in patients' to 'are approved for human use, that exert neurotrophic effects on dopaminergic neurons through modulation of BMP-Smad signalling. This rationalises the further study of drugs that target the BMP-Smad pathway as potential neuroprotective pharmacotherapy for Parkinson's disease.
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Affiliation(s)
- Susan R Goulding
- Department of Biological Sciences, Munster Technological University, Cork, Ireland
- Department of Anatomy and Neuroscience and Cork Neuroscience Centre, University College Cork, Cork, Ireland
| | - Martin Lévesque
- Department of Psychiatry and Neurosciences, Cervo Brain Research Centre, Université Laval, Quebec, QC, Canada
| | - Aideen M Sullivan
- Department of Anatomy and Neuroscience and Cork Neuroscience Centre, University College Cork, Cork, Ireland
- APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Louise M Collins
- Department of Anatomy and Neuroscience and Cork Neuroscience Centre, University College Cork, Cork, Ireland.
- Department of Physiology, University College Cork, Cork, Ireland.
| | - Gerard W O'Keeffe
- Department of Anatomy and Neuroscience and Cork Neuroscience Centre, University College Cork, Cork, Ireland.
- APC Microbiome Institute, University College Cork, Cork, Ireland.
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27
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Ge M, Tian H, Mao L, Li D, Lin J, Hu H, Huang S, Zhang C, Mei X. Zinc attenuates ferroptosis and promotes functional recovery in contusion spinal cord injury by activating Nrf2/GPX4 defense pathway. CNS Neurosci Ther 2021; 27:1023-1040. [PMID: 33951302 PMCID: PMC8339532 DOI: 10.1111/cns.13657] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 12/20/2022] Open
Abstract
AIM Spinal cord injury (SCI) involves multiple pathological processes. Ferroptosis has been shown to play a critical role in the injury process. We wanted to explore whether zinc can inhibit ferroptosis, reduce inflammation, and then exert a neuroprotective effect. METHODS The Alice method was used to establish a spinal cord injury model. The Basso Mouse Scale (BMS), Nissl staining, hematoxylin-eosin staining, and immunofluorescence analysis were used to investigate the protective effect of zinc on neurons on spinal cord neurons and the recovery of motor function. The regulation of the nuclear factor E2/heme oxygenase-1 (NRF2/HO-1) pathway was assessed, the levels of essential ferroptosis proteins were measured, and the changes in mitochondria were confirmed by transmission electron microscopy and 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethyl-imidacarbocyanine iodide (JC-1) staining. In vitro experiments using VSC4.1 (spinal cord anterior horn motor neuroma cell line), 4-hydroxynonenal (4HNE), reactive oxygen species (ROS), superoxide dismutase (SOD), malondialdehyde (MDA), glutathione (GSH), lipid peroxides, and finally the levels of inflammatory factors were detected to assess the effect of zinc. RESULTS Zinc reversed behavioral and structural changes after SCI. Zinc increased the expression of NRF2/HO-1, thereby increasing the content of glutathione peroxidase 4 (GPX4), SOD, and GHS and reducing the levels of lipid peroxides, MDA, and ROS. Zinc also rescued injured mitochondria and effectively reduced spinal cord injury and the levels of inflammatory factors, and the NRF2 inhibitor Brusatol reversed the effects of zinc. CONCLUSION Zinc promoted the degradation of oxidative stress products and lipid peroxides through the NRF2/HO-1 and GPX4 signaling pathways to inhibit ferroptosis in neurons.
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Affiliation(s)
- Ming‐hao Ge
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - He Tian
- Department of Histology and EmbryologyJinzhou Medical UniversityJinzhouChina
| | - Liang Mao
- Department of OncologyThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Dao‐yong Li
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Jia‐quan Lin
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Heng‐shuo Hu
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Shuo‐cheng Huang
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Chuan‐jie Zhang
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
| | - Xi‐fan Mei
- Department of OrthopedicsThe First Affiliated Hospital of Jinzhou Medical UniversityJinzhouChina
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28
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Nidamarthi HVK, Choudhury M, Velmurugan D. Understanding the binding mechanism of succinic acid against phospholipase A 2 from bee venom. J Biochem Mol Toxicol 2021; 35:e22715. [PMID: 33580989 DOI: 10.1002/jbt.22715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/19/2020] [Accepted: 11/26/2020] [Indexed: 11/12/2022]
Abstract
Phospholipase A2 (PLA2 ) is responsible for the release of fatty acids from glycerophospholipids. PLA2 is commonly found in mammalian tissues. It is also found in venom from different animals ranging from insects, arachnid, and snakes. The release of arachidonic acid in large amount results in inflammation and pain. Identification of compounds that can inhibit the activity of PLA2 is of large scientific and medicinal interest as these compounds can act as antidotes toward snake bites and bee stings. Among the different compounds that have been tested for inhibition of PLA2 , a secondary metabolite succinic acid is identified to inhibit PLA2 activity. The inhibition was analyzed using an in vitro PLA2 inhibition assay and isothermal titration calorimetry (ITC) studies. The molecular mechanism of the mode of inhibition was studied using molecular docking and simulation studies.
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Affiliation(s)
- H V Kutumbarao Nidamarthi
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, India
| | - Manisha Choudhury
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, India.,Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai, Maharashtra, India
| | - Devadasan Velmurugan
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, India
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29
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Yamashita S, Fujiwara K, Tominaga Y, Nguma E, Takahashi T, Otoki Y, Yamamoto A, Higuchi O, Nakagawa K, Kinoshita M, Miyazawa T. Absorption Kinetics of Ethanolamine Plasmalogen and Its Hydrolysate in Mice. J Oleo Sci 2021; 70:263-273. [PMID: 33456005 DOI: 10.5650/jos.ess20223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ethanolamine plasmalogen (PlsEtn), a subclass of ethanolamine glycerophospholipid (EtnGpl), has been reported to have many biological and dietary functions. In terms of PlsEtn absorption, some studies have reported that PlsEtn is re-esterized at the sn-2 position using lymph cannulation and the everted jejunal sac model. In this study, we aimed to better understand the uptake kinetics of PlsEtn and increase its absorption. We thus compared the uptake kinetics of PlsEtn with that of the lyso-form, in which the fatty acid at the sn-2 position was hydrolyzed enzymatically. Upon administration of EtnGpl (extracted from oysters or ascidians, 75.4 mol% and 88.4 mol% of PlsEtn ratio, respectively), the plasma PlsEtn species in mice showed the highest levels at 4 or 8 hours after administration. In the contrast, administration of the EtnGpl hydrolysate, which contained lysoEtnGpl and free fatty acids, markedly increased the plasma levels of PlsEtn species at 2 h after administration. The area under the plasma concentration-time curve (AUC), especially the AUC0-4 h of PlsEtn species, was higher with hydrolysate administration than that with EtnGpl administration. These results indicate that EtnGpl hydrolysis accelerated the absorption and metabolism of PlsEtn. Consequently, using a different experimental approach from that used in previous studies, we reconfirmed that PlsEtn species were absorbed via hydrolysis at the sn-2 position, suggesting that hydrolysis in advance could increase PlsEtn uptake.
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Affiliation(s)
- Shinji Yamashita
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine
| | - Kazufumi Fujiwara
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine
| | - Yuki Tominaga
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine
| | - Ephantus Nguma
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine
| | - Takumi Takahashi
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University
| | - Yurika Otoki
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University
| | | | - Ohki Higuchi
- Food and Biotechnology Platform Promoting Project, New Industry Creation Hatchery Center (NICHe), Tohoku University
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University
| | - Mikio Kinoshita
- Department of Life and Food Science, Obihiro University of Agriculture and Veterinary Medicine
| | - Teruo Miyazawa
- Food and Biotechnology Platform Promoting Project, New Industry Creation Hatchery Center (NICHe), Tohoku University
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30
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Fonteh AN, Chiang AJ, Arakaki X, Edminster SP, Harrington MG. Accumulation of Cerebrospinal Fluid Glycerophospholipids and Sphingolipids in Cognitively Healthy Participants With Alzheimer's Biomarkers Precedes Lipolysis in the Dementia Stage. Front Neurosci 2020; 14:611393. [PMID: 33390893 PMCID: PMC7772205 DOI: 10.3389/fnins.2020.611393] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/23/2020] [Indexed: 12/16/2022] Open
Abstract
Insight into lipids' roles in Alzheimer's disease (AD) pathophysiology is limited because brain membrane lipids have not been characterized in cognitively healthy (CH) individuals. Since age is a significant risk factor of AD, we hypothesize that aging renders the amyloid precursor protein (APP) more susceptible to abnormal processing because of deteriorating membrane lipids. To reflect brain membranes, we studied their lipid components in cerebrospinal fluid (CSF) and brain-derived CSF nanoparticle membranes. Based on CSF Aβ42/Tau levels established biomarkers of AD, we define a subset of CH participants with normal Aβ42/Tau (CH-NAT) and another group with abnormal or pathological Aβ42/Tau (CH-PAT). We report that glycerophospholipids are differentially metabolized in the CSF supernatant fluid and nanoparticle membrane fractions from CH-NAT, CH-PAT, and AD participants. Phosphatidylcholine molecular species from the supernatant fraction of CH-PAT were higher than in the CH-NAT and AD participants. Sphingomyelin levels in the supernatant fraction were lower in the CH-PAT and AD than in the CH-NAT group. The decrease in sphingomyelin corresponded with an increase in ceramide and dihydroceramide and an increase in the ceramide to sphingomyelin ratio in AD. In contrast to the supernatant fraction, sphingomyelin is higher in the nanoparticle fraction from the CH-PAT group, accompanied by lower ceramide and dihydroceramide and a decrease in the ratio of ceramide to sphingomyelin in CH-PAT compared with CH-NAT. On investigating the mechanism for the lipid changes in AD, we observed that phospholipase A2 (PLA2) activity was higher in the AD group than the CH groups. Paradoxically, acid and neutral sphingomyelinase (SMase) activities were lower in AD compared to the CH groups. Considering external influences on lipids, the clinical groups did not differ in their fasting blood lipids or dietary lipids, consistent with the CSF lipid changes originating from brain pathophysiology. The lipid accumulation in a prodromal AD biomarker positive stage identifies perturbation of lipid metabolism and disturbances in APP/Amyloid beta (Aβ) as early events in AD pathophysiology. Our results identify increased lipid turnover in CH participants with AD biomarkers, switching to a predominantly lipolytic state in dementia. This knowledge may be useful for targeting and testing new AD treatments.
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Affiliation(s)
- Alfred N. Fonteh
- Huntington Medical Research Institutes, Pasadena, CA, United States
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Nutraceuticals and probiotics in the management of psychiatric and neurological disorders: A focus on microbiota-gut-brain-immune axis. Brain Behav Immun 2020; 90:403-419. [PMID: 32889082 DOI: 10.1016/j.bbi.2020.08.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 08/20/2020] [Accepted: 08/26/2020] [Indexed: 12/12/2022] Open
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Cichon N, Saluk-Bijak J, Gorniak L, Przyslo L, Bijak M. Flavonoids as a Natural Enhancer of Neuroplasticity-An Overview of the Mechanism of Neurorestorative Action. Antioxidants (Basel) 2020; 9:antiox9111035. [PMID: 33114058 PMCID: PMC7690743 DOI: 10.3390/antiox9111035] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022] Open
Abstract
Neuroplasticity is a complex physiological process occurring in the brain for its entire life. However, it is of particular importance in the case of central nervous system (CNS) disorders. Neurological recovery largely depends on the ability to reestablish the structural and functional organization of neurovascular networks, which must be pharmacologically supported. For this reason, new forms of therapy are constantly being sought. Including adjuvant therapies in standard treatment may support the enhancement of repair processes and restore impaired brain functions. The common hallmark of nerve tissue damage is increased by oxidative stress and inflammation. Thus, the studies on flavonoids with strong antioxidant and anti-inflammatory properties as a potential application in neuro intervention have been carried out for a long time. However, recent results have revealed another important property of these compounds in CNS therapy. Flavonoids possess neuroprotective activity, and promote synaptogenesis and neurogenesis, by, among other means, inhibiting oxidative stress and neuroinflammation. This paper presents an overview of the latest knowledge on the impact of flavonoids on the plasticity processes of the brain, taking into account the molecular basis of their activity.
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Affiliation(s)
- Natalia Cichon
- Biohazard Prevention Center, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (L.G.); (M.B.)
- Correspondence: ; Tel.: +48-42-635-43-36
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland;
| | - Leslaw Gorniak
- Biohazard Prevention Center, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (L.G.); (M.B.)
| | - Lukasz Przyslo
- Department of Developmental Neurology and Epileptology, Research Institute of Polish Mother’s Memorial Hospital, Rzgowska 281/289, 93-338 Lodz, Poland;
| | - Michal Bijak
- Biohazard Prevention Center, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (L.G.); (M.B.)
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Ong WY, Go ML, Wang DY, Cheah IKM, Halliwell B. Effects of Antimalarial Drugs on Neuroinflammation-Potential Use for Treatment of COVID-19-Related Neurologic Complications. Mol Neurobiol 2020; 58:106-117. [PMID: 32897518 PMCID: PMC7477069 DOI: 10.1007/s12035-020-02093-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/25/2020] [Indexed: 02/06/2023]
Abstract
The SARS-CoV-2 virus that is the cause of coronavirus disease 2019 (COVID-19) affects not only peripheral organs such as the lungs and blood vessels, but also the central nervous system (CNS)—as seen by effects on smell, taste, seizures, stroke, neuropathological findings and possibly, loss of control of respiration resulting in silent hypoxemia. COVID-19 induces an inflammatory response and, in severe cases, a cytokine storm that can damage the CNS. Antimalarials have unique properties that distinguish them from other anti-inflammatory drugs. (A) They are very lipophilic, which enhances their ability to cross the blood-brain barrier (BBB). Hence, they have the potential to act not only in the periphery but also in the CNS, and could be a useful addition to our limited armamentarium against the SARS-CoV-2 virus. (B) They are non-selective inhibitors of phospholipase A2 isoforms, including cytosolic phospholipase A2 (cPLA2). The latter is not only activated by cytokines but itself generates arachidonic acid, which is metabolized by cyclooxygenase (COX) to pro-inflammatory eicosanoids. Free radicals are produced in this process, which can lead to oxidative damage to the CNS. There are at least 4 ways that antimalarials could be useful in combating COVID-19. (1) They inhibit PLA2. (2) They are basic molecules capable of affecting the pH of lysosomes and inhibiting the activity of lysosomal enzymes. (3) They may affect the expression and Fe2+/H+ symporter activity of iron transporters such as divalent metal transporter 1 (DMT1), hence reducing iron accumulation in tissues and iron-catalysed free radical formation. (4) They could affect viral replication. The latter may be related to their effect on inhibition of PLA2 isoforms. Inhibition of cPLA2 impairs an early step of coronavirus replication in cell culture. In addition, a secretory PLA2 (sPLA2) isoform, PLA2G2D, has been shown to be essential for the lethality of SARS-CoV in mice. It is important to take note of what ongoing clinical trials on chloroquine and hydroxychloroquine can eventually tell us about the use of antimalarials and other anti-inflammatory agents, not only for the treatment of COVID-19, but also for neurovascular disorders such as stroke and vascular dementia.
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Affiliation(s)
- Wei-Yi Ong
- Department of Anatomy, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119260, Singapore.
- Neurobiology Programme, Life Sciences Institute, National University of Singapore, Singapore, 119260, Singapore.
| | - Mei-Lin Go
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, 119260, Singapore
| | - De-Yun Wang
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119260, Singapore
| | - Irwin Kee-Mun Cheah
- Neurobiology Programme, Life Sciences Institute, National University of Singapore, Singapore, 119260, Singapore
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119260, Singapore
| | - Barry Halliwell
- Neurobiology Programme, Life Sciences Institute, National University of Singapore, Singapore, 119260, Singapore.
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119260, Singapore.
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Vitte J, Michel M, Mezouar S, Diallo AB, Boumaza A, Mege JL, Desnues B. Immune Modulation as a Therapeutic Option During the SARS-CoV-2 Outbreak: The Case for Antimalarial Aminoquinolines. Front Immunol 2020; 11:2159. [PMID: 32983179 PMCID: PMC7484884 DOI: 10.3389/fimmu.2020.02159] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 08/07/2020] [Indexed: 12/20/2022] Open
Abstract
The rapid spread, severity, and lack of specific treatment for COVID-19 resulted in hasty drug repurposing. Conceptually, trials of antivirals were well-accepted, but twentieth century antimalarials sparked an impassioned global debate. Notwithstanding, antiviral and immunomodulatory effects of aminoquinolines have been investigated in vitro, in vivo and in clinical trials for more than 30 years. We review the mechanisms of action of (hydroxy)chloroquine on immune cells and networks and discuss promises and pitfalls in the fight against SARS-CoV-2, the agent of the COVID-19 outbreak.
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Affiliation(s)
- Joana Vitte
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Moïse Michel
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Soraya Mezouar
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Aïssatou Bailo Diallo
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Asma Boumaza
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Jean-Louis Mege
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - Benoit Desnues
- Aix Marseille Univ, IRD, APHM, MEPHI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
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Hoxha M, Spahiu E, Prendi E, Zappacosta B. A Systematic Review on the Role of Arachidonic Acid Pathway in Multiple Sclerosis. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 21:160-187. [PMID: 32842948 DOI: 10.2174/1871527319666200825164123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/28/2020] [Accepted: 07/17/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND & OBJECTIVE Multiple sclerosis (MS) is an inflammatory neurodegenerative disease characterized by destruction of oligodendrocytes, immune cell infiltration and demyelination. Inflammation plays a significant role in MS, and the inflammatory mediators such as eicosanoids, leukotrienes, superoxide radicals are involved in pro-inflammatory responses in MS. In this systematic review we tried to define and discuss all the findings of in vivo animal studies and human clinical trials on the potential association between arachidonic acid (AA) pathway and multiple sclerosis. METHODS A systematic literature search across Pubmed, Scopus, Embase and Cochrane database was conducted. This systematic review was performed according to PRISMA guidelines. RESULTS A total of 146 studies were included, of which 34 were conducted in animals, 58 in humans, and 60 studies reported the role of different compounds that target AA mediators or their corresponding enzymes/ receptors, and can have a therapeutic effect in MS. These results suggest that eicosanoids have significant roles in experimental autoimmune encephalomyelitis (EAE) and MS. The data from animal and human studies elucidated that PGI2, PGF2α, PGD2, isoprostanes, PGE2, PLA2, LTs are increased in MS. PLA2 inhibition modulates the progression of the disease. PGE1 analogues can be a useful option in the treatment of MS. CONCLUSIONS All studies reported the beneficial effects of COX and LOX inhibitors in MS. The hybrid compounds, such as COX-2 inhibitors/TP antagonists and 5-LOX inhibitors can be an innovative approach for multiple sclerosis treatment. Future work in MS should shed light in synthesizing new compounds targeting arachidonic acid pathway.
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Affiliation(s)
- Malvina Hoxha
- Department of Chemical-Toxicological and Pharmacological Evaluations of Drugs, Faculty of Pharmacy, Catholic University Our Lady of Good Counsel, Rruga Dritan Hoxha, Tirana. Albania
| | | | - Emanuela Prendi
- Catholic University Our Lady of Good Counsel, Department of Biomedical Sciences, Rruga Dritan Hoxha, Tirana. Albania
| | - Bruno Zappacosta
- Department of Chemical-Toxicological and Pharmacological Evaluations of Drugs, Faculty of Pharmacy, Catholic University Our Lady of Good Counsel, Rruga Dritan Hoxha, Tirana. Albania
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Pharaoh G, Brown JL, Sataranatarajan K, Kneis P, Bian J, Ranjit R, Hadad N, Georgescu C, Rabinovitch P, Ran Q, Wren JD, Freeman W, Kinter M, Richardson A, Van Remmen H. Targeting cPLA 2 derived lipid hydroperoxides as a potential intervention for sarcopenia. Sci Rep 2020; 10:13968. [PMID: 32811851 PMCID: PMC7435184 DOI: 10.1038/s41598-020-70792-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 07/23/2020] [Indexed: 12/13/2022] Open
Abstract
Defects in neuromuscular innervation contribute significantly to the age-related decline in muscle mass and function (sarcopenia). Our previous studies demonstrated that denervation induces muscle mitochondrial hydroperoxide production (H2O2 and lipid hydroperoxides (LOOHs)). Here we define the relative contribution of mitochondrial electron transport chain (ETC) derived H2O2 versus cytosolic phospholipase A2 (cPLA2) derived LOOHs in neurogenic muscle atrophy. We show that denervation increases muscle cPLA2 protein content, activity, and metabolites downstream of cPLA2 including LOOHs. Increased scavenging of mitochondrial H2O2 does not protect against denervation atrophy, suggesting ETC generated H2O2 is not a critical player. In contrast, inhibition of cPLA2 in vivo mitigates LOOH production and muscle atrophy and maintains individual muscle fiber size while decreasing oxidative damage. Overall, we show that loss of innervation in several muscle atrophy models including aging induces generation of LOOHs produced by arachidonic acid metabolism in the cPLA2 pathway contributing to loss of muscle mass.
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Affiliation(s)
- Gavin Pharaoh
- Physiology Department, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Jacob L Brown
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | | | - Parker Kneis
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Jan Bian
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Rojina Ranjit
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Niran Hadad
- Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Constantin Georgescu
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | | | - Qitao Ran
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX, USA
- South Texas Veterans Health Care System, San Antonio, TX, USA
| | - Jonathan D Wren
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Willard Freeman
- Physiology Department, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Michael Kinter
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Arlan Richardson
- Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Holly Van Remmen
- Physiology Department, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA.
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Oklahoma City VA Medical Center, Oklahoma City, OK, USA.
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Riaz MS, Kaur A, Shwayat SN, Behboudi S, Kishore U, Pathan AA. Dissecting the Mechanism of Intracellular Mycobacterium smegmatis Growth Inhibition by Platelet Activating Factor C-16. Front Microbiol 2020; 11:1046. [PMID: 32587578 PMCID: PMC7297918 DOI: 10.3389/fmicb.2020.01046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 04/27/2020] [Indexed: 11/15/2022] Open
Abstract
Mycobacterium tuberculosis (M.tb) infection results in approximately 1.3 million human deaths each year. M.tb resides primarily inside macrophages, and maintains persistent infection. In response to infection and inflammation, platelet activating factor C-16 (PAF C-16), a phospholipid compound, is released by various cells including neutophils and monocytes. We have recently shown that PAF C-16 can directly inhibit the growth of two representative non-pathogenic mycobacteria, Mycobacterium bovis BCG and Mycobacterium smegmatis (M. smegmatis), by damaging the bacterial cell membrane. Here, we have examined the effect of PAF C-16 on M. smegmatis residing within macrophages, and identified mechanisms involved in their growth inhibitory function. Our results demonstrated that exogenous PAF C-16 inhibited the growth of M. smegmatis inside phagocytic cells of monocytic cell line, THP-1; this effect was partially blocked by PAF receptor antagonists, suggesting the involvement of PAF receptor-mediated signaling pathways. Arachidonic acid, a downstream metabolite of PAF C-16 signaling pathway, directly inhibited the growth of M. smegmatis in vitro. Moreover, the inhibition of phospholipase C and phospholipase A2 activities, involved in PAF C-16 signaling pathway, increased survival of intracellular M. smegmatis. Interestingly, we also observed that inhibition of inducible nitric oxide synthase (iNOS) enzyme and antibody-mediated neutralization of TNF-α partially mitigated the intracellular growth inhibitory effect of PAF C-16. Use of a number of PAF C-16 structural analogs, including Lyso-PAF, 2-O-methyl PAF, PAF C-18 and Hexanolamino PAF, revealed that the presence of acetyl group (CH3CO) at sn-2 position of the glycerol backbone of PAF is important for the intracellular growth inhibition activity against M. smegmatis. Taken together, these results suggest that exogenous PAF C-16 treatment inhibits intracellular M. smegmatis growth, at least partially, in a nitric oxide and TNF-α dependent manner.
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Affiliation(s)
- Muhammad Suleman Riaz
- Division of Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom.,Department of Biotechnology, Abdul Wali Khan University, Mardan, Pakistan
| | - Anuvinder Kaur
- Division of Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Suha Nadim Shwayat
- Division of Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Shahriar Behboudi
- The Pirbright Institute, Woking, United Kingdom.,School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Uday Kishore
- Division of Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Ansar Ahmed Pathan
- Division of Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom
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Sarkar C, Jones JW, Hegdekar N, Thayer JA, Kumar A, Faden AI, Kane MA, Lipinski MM. PLA2G4A/cPLA2-mediated lysosomal membrane damage leads to inhibition of autophagy and neurodegeneration after brain trauma. Autophagy 2020; 16:466-485. [PMID: 31238788 PMCID: PMC6999646 DOI: 10.1080/15548627.2019.1628538] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 05/16/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022] Open
Abstract
Lysosomal membrane permeabilization (LMP) is observed under many pathological conditions, leading to cellular dysfunction and death. However, the mechanisms by which lysosomal membranes become leaky in vivo are not clear. Our data demonstrate that LMP occurs in neurons following controlled cortical impact induced (CCI) traumatic brain injury (TBI) in mice, leading to impaired macroautophagy (autophagy) and neuronal cell death. Comparison of LC-MS/MS lysosomal membrane lipid profiles from TBI and sham animals suggested a role for PLA2G4A/cPLA2 (phospholipase A2, group IVA [cytosolic, calcium-dependent]) in TBI-induced LMP. Activation of PLA2G4A caused LMP and inhibition of autophagy flux in cell lines and primary neurons. In vivo pharmacological inhibition of PLA2G4A attenuated TBI-induced LMP, as well as subsequent impairment of autophagy and neuronal loss, and was associated with improved neurological outcomes. Inhibition of PLA2G4A in vitro limited amyloid-β-induced LMP and inhibition of autophagy. Together, our data indicate that PLA2G4A -mediated lysosomal membrane damage is involved in neuronal cell death following CCI-induced TBI and potentially in other neurodegenerative disorders.Abbreviations: AACOCF3, arachidonyl trifluoromethyl ketone; ACTB/β-actin, actin, beta; AD, Alzheimer disease; ATG5, autophagy related 5; ATG7, autophagy related 7; ATG12, autophagy related 12; BECN1, beclin 1, autophagy related; C1P, ceramide-1-phosphate; CCI, controlled cortical impact; CTSD, cathepsin D; CTSL, cathepsin L; GFP, green fluorescent protein; IF, immunofluorescence; LAMP1, lysosomal-associated membrane protein 1; LAMP2, lysosomal-associated membrane protein 2; LC-MS/MS, liquid chromatography-tandem mass spectrometry; LMP, Lysosomal membrane permeabilization; LPC, lysophosphatidylcholine; LPE, lysophosphatidylethanolamine; MAP1LC3/LC3, microtuble-associated protein 1 light chain 3; NAGLU, alpha-N-acetylglucosaminidase (Sanfilippo disease IIIB); PC, diacyl glycerophosphatidylcholine; PE, diacyl glycerophosphatidylethanolamine; PE-O, plasmanyl glycerophosphatidylethanolamine; PE-P, plasmenyl glycerophosphatidylethanolamine; PLA2G4A/cPLA2, phospholipase A2, group IVA (cytosolic, calcium-dependent); RBFOX3, RNA binding protein, fox-1 homolog (C. elegans) 3; RFP, red fluorescent protein; ROS, reactive oxygen species; SQSTM1, sequestosome 1; TUBA1/α-tubulin, tubulin, alpha; TBI, traumatic brain injury; TFEB, transcription factor EB; ULK1, unc-51 like kinase 1.
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Affiliation(s)
- Chinmoy Sarkar
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jace W. Jones
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, USA
| | - Nivedita Hegdekar
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Julia A. Thayer
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alok Kumar
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Molecular Medicine and Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow-U.P., India
| | - Alan I. Faden
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Maureen A. Kane
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, USA
| | - Marta M. Lipinski
- Department of Anesthesiology, Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
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Miletić Vukajlović J, Drakulić D, Pejić S, Ilić TV, Stefanović A, Petković M, Schiller J. Increased plasma phosphatidylcholine/lysophosphatidylcholine ratios in patients with Parkinson's disease. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8595. [PMID: 31519070 DOI: 10.1002/rcm.8595] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/03/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Changes in lipid composition might be associated with the onset and progression of various neurodegenerative diseases. Herein, we investigated the changes in the plasma phosphatidylcholine (PC)/lysophosphatidylcholine (LPC) ratios in patients with Parkinson's disease (PD) in comparison with healthy subjects and their correlation with clinico-pathological features. METHODS The study included 10 controls and 25 patients with PD. All patients were assigned to groups based on clinico-pathological characteristics (gender, age at examination, duration of disease and Hoehn and Yahr (H&Y) stage). The analysis of the PC/LPC intensity ratios in plasma lipid extracts was performed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RESULTS PD patients exhibited an increased PC/LPC intensity ratio in comparison with the control group of healthy subjects. Furthermore, the investigated ratio was shown to be correlated with clinico-pathological parameters, in particular with H&Y stage and disease duration. The PC/LPC intensity ratio in plasma samples of PD patients was found to be elevated in all examined H&Y stages and throughout the disease duration. CONCLUSIONS To our knowledge, this is the first study examining the PC/LPC ratios in plasma of patients with PD and illustrating their correlation with clinico-pathological features. Although the presented results may be considered as preliminary due to the limited number of participants, the observed alterations of PC/LPC ratios in plasma might be a first step in the characterization of plasma lipid changes in PD patients and an indicator of lipid reconfiguration.
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Affiliation(s)
- Jadranka Miletić Vukajlović
- Department of Physical Chemistry, VINČA Institute of Nuclear Sciences - University of Belgrade, Belgrade, Republic of Serbia
| | - Dunja Drakulić
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences - University of Belgrade, Belgrade, Republic of Serbia
| | - Snežana Pejić
- Department of Molecular Biology and Endocrinology, VINČA Institute of Nuclear Sciences - University of Belgrade, Belgrade, Republic of Serbia
| | - Tihomir V Ilić
- Medical Faculty of Medical Military Academy, Clinic of Neurology, University of Defense, Belgrade, Republic of Serbia
| | - Aleksandra Stefanović
- Department of Medical Biochemistry, Faculty of Pharmacy - University of Belgrade, Belgrade, Republic of Serbia
| | - Marijana Petković
- Madeira Chemistry Research Centre, University of Madeira, Funchal, Portugal
- Department of Atomic Physics, VINČA Institute of Nuclear Sciences - University of Belgrade, Belgrade, Republic of Serbia
| | - Jürgen Schiller
- Institute of Medical Physics and Biophysics, Medical Department, University of Leipzig, Leipzig, Germany
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Richardson RJ, Fink JK, Glynn P, Hufnagel RB, Makhaeva GF, Wijeyesakere SJ. Neuropathy target esterase (NTE/PNPLA6) and organophosphorus compound-induced delayed neurotoxicity (OPIDN). ADVANCES IN NEUROTOXICOLOGY 2020; 4:1-78. [PMID: 32518884 PMCID: PMC7271139 DOI: 10.1016/bs.ant.2020.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Systemic inhibition of neuropathy target esterase (NTE) with certain organophosphorus (OP) compounds produces OP compound-induced delayed neurotoxicity (OPIDN), a distal degeneration of axons in the central nervous system (CNS) and peripheral nervous system (PNS), thereby providing a powerful model for studying a spectrum of neurodegenerative diseases. Axonopathies are important medical entities in their own right, but in addition, illnesses once considered primary neuronopathies are now thought to begin with axonal degeneration. These disorders include Alzheimer's disease, Parkinson's disease, and motor neuron diseases such as amyotrophic lateral sclerosis (ALS). Moreover, conditional knockout of NTE in the mouse CNS produces vacuolation and other degenerative changes in large neurons in the hippocampus, thalamus, and cerebellum, along with degeneration and swelling of axons in ascending and descending spinal cord tracts. In humans, NTE mutations cause a variety of neurodegenerative conditions resulting in a range of deficits including spastic paraplegia and blindness. Mutations in the Drosophila NTE orthologue SwissCheese (SWS) produce neurodegeneration characterized by vacuolization that can be partially rescued by expression of wild-type human NTE, suggesting a potential therapeutic approach for certain human neurological disorders. This chapter defines NTE and OPIDN, presents an overview of OP compounds, provides a rationale for NTE research, and traces the history of discovery of NTE and its relationship to OPIDN. It then briefly describes subsequent studies of NTE, including practical applications of the assay; aspects of its domain structure, subcellular localization, and tissue expression; abnormalities associated with NTE mutations, knockdown, and conventional or conditional knockout; and hypothetical models to help guide future research on elucidating the role of NTE in OPIDN.
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Affiliation(s)
- Rudy J. Richardson
- Molecular Simulations Laboratory, Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, United States,Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, United States,Center for Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI, United States,Michigan Institute for Computational Discovery and Engineering, University of Michigan, Ann Arbor, MI, United States,Corresponding author:
| | - John K. Fink
- Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, United States,Ann Arbor Veterans Affairs Medical Center, Ann Arbor, MI, United States
| | - Paul Glynn
- Department of Molecular and Cell Biology, University of Leicester, Leicester, United Kingdom
| | - Robert B. Hufnagel
- Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Galina F. Makhaeva
- Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Russia
| | - Sanjeeva J. Wijeyesakere
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, United States
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41
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Varkuti BH, Kepiro M, Liu Z, Vick K, Avchalumov Y, Pacifico R, MacMullen CM, Kamenecka TM, Puthanveettil SV, Davis RL. Neuron-based high-content assay and screen for CNS active mitotherapeutics. SCIENCE ADVANCES 2020; 6:eaaw8702. [PMID: 31934620 PMCID: PMC6949038 DOI: 10.1126/sciadv.aaw8702] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 10/30/2019] [Indexed: 06/10/2023]
Abstract
Impaired mitochondrial dynamics and function are hallmarks of many neurological and psychiatric disorders, but direct screens for mitotherapeutics using neurons have not been reported. We developed a multiplexed and high-content screening assay using primary neurons and identified 67 small-molecule modulators of neuronal mitostasis (MnMs). Most MnMs that increased mitochondrial content, length, and/or health also increased mitochondrial function without altering neurite outgrowth. A subset of MnMs protected mitochondria in primary neurons from Aβ(1-42) toxicity, glutamate toxicity, and increased oxidative stress. Some MnMs were shown to directly target mitochondria. The top MnM also increased the synaptic activity of hippocampal neurons and proved to be potent in vivo, increasing the respiration rate of brain mitochondria after administering the compound to mice. Our results offer a platform that directly queries mitostasis processes in neurons, a collection of small-molecule modulators of mitochondrial dynamics and function, and candidate molecules for mitotherapeutics.
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Affiliation(s)
- Boglarka H. Varkuti
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Miklos Kepiro
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ze Liu
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Kyle Vick
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Yosef Avchalumov
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Rodrigo Pacifico
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | | | - Theodore M. Kamenecka
- Department of Molecular Medicine, The Scripps Research Institute Florida, Jupiter, FL 33458, USA
| | | | - Ronald L. Davis
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
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Abstract
Inflammasomes are supramolecular protein complexes implicated in the detection of pathogens or danger-associated molecules and are responsible for mounting the first line of innate immune response to counteract these signals and restore tissue homeostasis. Among different inflammasomes identified so far, NLRP3 is of main interest since mutations in Nlrp3 gene are associated with autoinflammatory diseases such as Muckle–Wells syndrome, neonatal onset multisystem inflammatory disease, and familial cold urticaria/autoinflammatory syndrome. On the other hand, whereas other inflammasomes are mainly detectors of specific molecular motifs, NLRP3 is acting as a general sensor of cellular perturbations including potassium efflux, lysosomal damage, and ROS production. Besides this central role of NLRP3 in inflammation, recent publications show that the NLRP3 inflammasome is also involved in the physiopathology of several neurological disorders including Alzheimer’s disease, Parkinson’s disease, and multiple sclerosis. This review gives an overview of the established functions of the NLRP3 inflammasome in mediating inflammation in macrophages and describes its recently discovered roles in neurological disorders in promoting neuroinflammation, as well as modulating key proteins mediating the disorders. Finally, we discuss the targeting of NLRP3 in neurological diseases and present some examples of NLRP3 inhibitors that could be used in neurological disorder treatments.
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Affiliation(s)
- Elif Eren
- Department of Molecular Biology and Genetics, Apoptosis and Cancer Immunology Laboratory (AKIL), Boğaziçi University, İstanbul Turkey.,Center for Life Sciences and Technologies, Boğaziçi University, İstanbul Turkey
| | - Nesrin Özören
- Department of Molecular Biology and Genetics, Apoptosis and Cancer Immunology Laboratory (AKIL), Boğaziçi University, İstanbul Turkey.,Center for Life Sciences and Technologies, Boğaziçi University, İstanbul Turkey
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Osthues T, Sisignano M. Oxidized Lipids in Persistent Pain States. Front Pharmacol 2019; 10:1147. [PMID: 31680947 PMCID: PMC6803483 DOI: 10.3389/fphar.2019.01147] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/05/2019] [Indexed: 12/13/2022] Open
Abstract
Chemotherapy, nerve injuries, or diseases like multiple sclerosis can cause pathophysiological processes of persistent and neuropathic pain. Thereby, the activation threshold of ion channels is reduced in peripheral sensory neurons to normally noxious stimuli like heat, cold, acid, or mechanical due to sensitization processes. This leads to enhanced neuronal activity, which can result in mechanical allodynia, cold allodynia, thermal hyperalgesia, spontaneous pain, and may initiate persistent and neuropathic pain. The treatment options for persistent and neuropathic pain patients are limited; for about 50% of them, current medication is not efficient due to severe side effects or low response to the treatment. Therefore, it is of special interest to find additional treatment strategies. One approach is the control of neuronal sensitization processes. Herein, signaling lipids are crucial mediators and play an important role during the onset and maintenance of pain. As preclinical studies demonstrate, lipids may act as endogenous ligands or may sensitize transient receptor potential (TRP)-channels. Likewise, they can cause enhanced activity of sensory neurons by mechanisms involving G-protein coupled receptors and activation of intracellular protein kinases. In this regard, oxidized metabolites of the essential fatty acid linoleic acid, 9- and 13-hydroxyoctadecadienoic acid (HODE), their dihydroxy-metabolites (DiHOMEs), as well as epoxides of linoleic acid (EpOMEs) and of arachidonic acid (EETs), as well as lysophospholipids, sphingolipids, and specialized pro-resolving mediators (SPMs) have been reported to play distinct roles in pain transmission or inhibition. Here, we discuss the underlying molecular mechanisms of the oxidized linoleic acid metabolites and eicosanoids. Furthermore, we critically evaluate their role as potential targets for the development of novel analgesics and for the treatment of persistent or neuropathic pain.
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Affiliation(s)
- Tabea Osthues
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Branch for Translational Medicine and Pharmacology TMP, Frankfurt, Germany
| | - Marco Sisignano
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, University Hospital, Goethe-University, Frankfurt, Germany
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44
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Liu R, Chen Y, Fu W, Wang S, Cui Y, Zhao X, Lei ZN, Hettinghouse A, Liu J, Wang C, Zhang C, Bi Y, Xiao G, Chen ZS, Liu CJ. Fexofenadine inhibits TNF signaling through targeting to cytosolic phospholipase A2 and is therapeutic against inflammatory arthritis. Ann Rheum Dis 2019; 78:1524-1535. [PMID: 31302596 DOI: 10.1136/annrheumdis-2019-215543] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/29/2019] [Accepted: 07/01/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Tumour necrosis factor alpha (TNF-α) signalling plays a central role in the pathogenesis of various autoimmune diseases, particularly inflammatory arthritis. This study aimed to repurpose clinically approved drugs as potential inhibitors of TNF-α signalling in treatment of inflammatory arthritis. METHODS In vitro and in vivo screening of an Food and Drug Administration (FDA)-approved drug library; in vitro and in vivo assays for examining the blockade of TNF actions by fexofenadine: assays for defining the anti-inflammatory activity of fexofenadine using TNF-α transgenic (TNF-tg) mice and collagen-induced arthritis in DBA/1 mice. Identification and characterisation of the binding of fexofenadine to cytosolic phospholipase A2 (cPLA2) using drug affinity responsive target stability assay, proteomics, cellular thermal shift assay, information field dynamics and molecular dynamics; various assays for examining fexofenadine inhibition of cPLA2 as well as the dependence of fexofenadine's anti-TNF activity on cPLA2. RESULTS Serial screenings of a library composed of FDA-approved drugs led to the identification of fexofenadine as an inhibitor of TNF-α signalling. Fexofenadine potently inhibited TNF/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-ĸB) signalling in vitro and in vivo, and ameliorated disease symptoms in inflammatory arthritis models. cPLA2 was isolated as a novel target of fexofenadine. Fexofenadine blocked TNF-stimulated cPLA2 activity and arachidonic acid production through binding to catalytic domain 2 of cPLA2 and inhibition of its phosphorylation on Ser-505. Further, deletion of cPLA2 abolished fexofenadine's anti-TNF activity. CONCLUSION Collectively, these findings not only provide new insights into the understanding of fexofenadine action and underlying mechanisms but also provide new therapeutic interventions for various TNF-α and cPLA2-associated pathologies and conditions, particularly inflammatory rheumatic diseases.
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Affiliation(s)
- Ronghan Liu
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Yuehong Chen
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Wenyu Fu
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Shuya Wang
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Yazhou Cui
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Xiangli Zhao
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Zi-Ning Lei
- Department of Pharmaceutical Science, College ofPharmacy and Health Sciences, St. John's University, New York, NY, USA
| | - Aubryanna Hettinghouse
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Jody Liu
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Chao Wang
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Chen Zhang
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Yufei Bi
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA
| | - Guozhi Xiao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Science, College ofPharmacy and Health Sciences, St. John's University, New York, NY, USA
| | - Chuan-Ju Liu
- Department of Orthopaedic Surgery, New York University Medical Center, New York City, New York, USA .,Departmentof Cell Biology, New York University School of Medicine, New York, NY, USA
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45
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Wu J, Lipinski MM. Autophagy in Neurotrauma: Good, Bad, or Dysregulated. Cells 2019; 8:E693. [PMID: 31295858 PMCID: PMC6678153 DOI: 10.3390/cells8070693] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/06/2019] [Accepted: 07/09/2019] [Indexed: 12/12/2022] Open
Abstract
Autophagy is a physiological process that helps maintain a balance between the manufacture of cellular components and breakdown of damaged organelles and other toxic cellular constituents. Changes in autophagic markers are readily detectable in the spinal cord and brain following neurotrauma, including traumatic spinal cord and brain injury (SCI/TBI). However, the role of autophagy in neurotrauma remains less clear. Whether autophagy is good or bad is under debate, with strong support for both a beneficial and detrimental role for autophagy in experimental models of neurotrauma. Emerging data suggest that autophagic flux, a measure of autophagic degradation activity, is impaired in injured central nervous systems (CNS), and interventions that stimulate autophagic flux may provide neuroprotection in SCI/TBI models. Recent data demonstrating that neurotrauma can cause lysosomal membrane damage resulting in pathological autophagosome accumulation in the spinal cord and brain further supports the idea that the impairment of the autophagy-lysosome pathway may be a part of secondary injury processes of SCI/TBI. Here, we review experimental work on the complex and varied responses of autophagy in terms of both the beneficial and detrimental effects in SCI and TBI models. We also discuss the existing and developing therapeutic options aimed at reducing the disruption of autophagy to protect the CNS after injuries.
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Affiliation(s)
- Junfang Wu
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
- Center to Advance Chronic Pain Research, University of Maryland, Baltimore, MD 21201, USA.
| | - Marta M Lipinski
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research (STAR), University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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46
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Rezapour-Firouzi S, Kheradmand F, Shahabi S, Tehrani AA, Mazloomi E, Mohammadzadeh A. Hemp seed/evening primrose oil affects expression of STAT3, IL-17, and FOXP3 + in experimental autoimmune encephalomyelitis. Res Pharm Sci 2019; 14:146-154. [PMID: 31620191 PMCID: PMC6791174 DOI: 10.4103/1735-5362.253362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
T helper (Th)-17 mediate inflammation in both peripheral tissues and the central nervous system. Signal transducer and activator of transcription factor3 (STAT3) is required for Th-cell pathogenicity and its activation in the brain has been demonstrated during the acute phase of experimental autoimmune encephalomyelitis (EAE) through the mammalian target of rapamycin (mTOR) signaling. Rapamycin (RAPA), an inhibitor of mTOR, can drive Forkhead box P3 (FOXP3+) induction as a regulatory factor. The aim of this study was to determine the effects of hemp seed/evening primrose oils (HSO/EPO) supplement on the expression of FOXP3+, STAT3, and interleukin (IL)-17 genes in EAE lymph nodes. EAE was induced by myelin oligodendrocyte glycoprotein peptide in mice, and then the mice were assigned to three treatment groups compared to two control groups (EAE and naive). The histological findings of the spinal cord were evaluated. To determine the expression of FOXP3+, STAT3, and IL-17 genes in the lymphocytes, qRT-PCR was used. Our results showed that EAE severity was reduced in HSO/EPO mice by reducing the expression of STAT3 and IL-17 genes and increasing the expression of FOXP3+ gene, which was confirmed by slight inflammation in the spinal cord. Histological findings showed a significant improvement in the HSO/EPO group. Our findings suggest that the HSO/EPO treatment can be used to ameliorate the demyelination of spinal cord, which was confirmed by immunological and histological findings.
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Affiliation(s)
- Soheila Rezapour-Firouzi
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, I.R. Iran
| | - Fatemeh Kheradmand
- Solid Tumor Research Center, Urmia University of Medical sciences, Urmia, I.R. Iran
| | - Sharam Shahabi
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, I.R. Iran
| | - Ali Asghar Tehrani
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, I.R. Iran
| | - Ebrahim Mazloomi
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, I.R. Iran
| | - Adel Mohammadzadeh
- Departement of Immunology and Genetics, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, I.R. Iran
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47
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Ling Y, Wang DD, Sun YX, Zhao DJ, Ni H. Neuro-Behavioral Status and the Hippocampal Expression of Metabolic Associated Genes in Wild-Type Rat Following a Ketogenic Diet. Front Neurol 2019; 10:65. [PMID: 30804881 PMCID: PMC6370680 DOI: 10.3389/fneur.2019.00065] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/17/2019] [Indexed: 01/16/2023] Open
Abstract
While a ketogenic diet (KD) is a well-established therapy for medically intractable epilepsy, clinical evidence of relevant adverse events of a KD has also been reported. We asked whether this kind of diet would have deleterious effects on wild-type brain function by evaluating KD-induced biochemical changes in the hippocampus as well as neurobehavioral changes occurring in wild-type rats. Fifty-four Sprague-Dawley rats were randomly assigned to three groups on postnatal day 28 (P28): wild-type rats fed with a KD qd (daily for 4 weeks, KD) or qod (every other day for 4 weeks, KOD), and wild-type rats fed with standard normal laboratory diet (ND). Neurobehavioral changes were observed on P35, P42, and P49. The hippocampal mossy fiber sprouting, the expression levels of zinc transporters (ZnTs) and lipid metabolism related genes were detected by Timm staining, RT-qPCR and western blot analysis, respectively, on P58. The KD-treated KOD and KD groups showed a significant delay of negative geotaxis reflex on P35, but not on P42 or P49. In the open field test, daily KD treatment only led to a reduction in exploratory activity and increased grooming times but induced no significant changes in the scores of vertical activity or delay time. KD qod treated rats (KOD) displayed a slight delay in the place navigation test on P35 compared with the KD group. There were no significant differences in Timm staining among the three groups. In parallel with these changes, KD treatment (both KD and KOD) induced significantly downregulated mRNA levels of Apoa1, Pdk4, and upregulated expression of ApoE, ANXN7, and cPLA2 in the hippocampus when compared with the ND group (except in the case of ApoE in the KOD group). Notably, both the mRNA and protein levels of cPLA2 in the KOD rats were significantly downregulated compared with the KD group but still markedly higher than in the ND group. No significant difference was found in ZnTs among the three groups. Our data suggest that early-life KD can provoke minor neurobehavioral effects in particular a delay in negative geotaxis reflex and an increase in grooming activity. The hippocampal lipid metabolism signaling pathway, especially cPLA2, may be the target of the protective effect of KD on long-term brain injury after developmental seizures.
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Affiliation(s)
- Ya Ling
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China.,The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dan-Dan Wang
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Yu-Xiao Sun
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Dong-Jing Zhao
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Hong Ni
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
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Guo YP, Tang BS, Guo JF. PLA2G6-Associated Neurodegeneration (PLAN): Review of Clinical Phenotypes and Genotypes. Front Neurol 2018; 9:1100. [PMID: 30619057 PMCID: PMC6305538 DOI: 10.3389/fneur.2018.01100] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 12/03/2018] [Indexed: 12/18/2022] Open
Abstract
Phospholipase A2 group VI (PLA2G6)-associated neurodegeneration (PLAN) includes a series of neurodegenerative diseases that result from the mutations in PLA2G6. PLAN has genetic and clinical heterogeneity, with different mutation sites, mutation types and ethnicities and its clinical phenotype is different. The clinical phenotypes and genotypes of PLAN are closely intertwined and vary widely. PLA2G6 encodes a group of VIA calcium-independent phospholipase A2 proteins (iPLA2β), an enzyme involved in lipid metabolism. According to the age of onset and progressive clinical features, PLAN can be classified into the following subtypes: infantile neuroaxonal dystrophy (INAD), atypical neuroaxonal dystrophy (ANAD) and parkinsonian syndrome which contains adult onset dystonia parkinsonism (DP) and autosomal recessive early-onset parkinsonism (AREP). In this review, we present an overview of PLA2G6-associated neurodegeneration in the context of current research.
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Affiliation(s)
- Yu-Pei Guo
- Center for Brain Disorders Research, Capital Medical University and Beijing Institute of Brain Disorders, Beijing, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Bei-Sha Tang
- Center for Brain Disorders Research, Capital Medical University and Beijing Institute of Brain Disorders, Beijing, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.,Center for Medical Genetics, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Ji-Feng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.,Center for Medical Genetics, Central South University, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
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49
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Liu L, Bonventre JV, Rittenhouse AR. cPLA2α-/- sympathetic neurons exhibit increased membrane excitability and loss of N-Type Ca2+ current inhibition by M1 muscarinic receptor signaling. PLoS One 2018; 13:e0201322. [PMID: 30557348 PMCID: PMC6296557 DOI: 10.1371/journal.pone.0201322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 07/11/2018] [Indexed: 11/18/2022] Open
Abstract
Group IVa cytosolic phospholipase A2 (cPLA2α) mediates GPCR-stimulated arachidonic acid (AA) release from phosphatidylinositol 4,5-bisphosphate (PIP2) located in plasma membranes. We previously found in superior cervical ganglion (SCG) neurons that PLA2 activity is required for voltage-independent N-type Ca2+ (N-) current inhibition by M1 muscarinic receptors (M1Rs). These findings are at odds with an alternative model, previously observed for M-current inhibition, where PIP2 dissociation from channels and subsequent metabolism by phospholipase C suffices for current inhibition. To resolve cPLA2α’s importance, we have investigated its role in mediating voltage-independent N-current inhibition (~40%) that follows application of the muscarinic agonist oxotremorine-M (Oxo-M). Preincubation with different cPLA2α antagonists or dialyzing cPLA2α antibodies into cells minimized N-current inhibition by Oxo-M, whereas antibodies to Ca2+-independent PLA2 had no effect. Taking a genetic approach, we found that SCG neurons from cPLA2α-/- mice exhibited little N-current inhibition by Oxo-M, confirming a role for cPLA2α. In contrast, cPLA2α antibodies or the absence of cPLA2α had no effect on voltage-dependent N-current inhibition by M2/M4Rs or on M-current inhibition by M1Rs. These findings document divergent M1R signaling mediating M-current and voltage-independent N-current inhibition. Moreover, these differences suggest that cPLA2α acts locally to metabolize PIP2 intimately associated with N- but not M-channels. To determine cPLA2α’s functional importance more globally, we examined action potential firing of cPLA2α+/+ and cPLA2α-/- SCG neurons, and found decreased latency to first firing and interspike interval resulting in a doubling of firing frequency in cPLA2α-/- neurons. These unanticipated findings identify cPLA2α as a tonic regulator of neuronal membrane excitability.
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Affiliation(s)
- Liwang Liu
- Program in Neuroscience, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Department of Physiology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Joseph V. Bonventre
- Harvard Institute of Medicine, Harvard Medical School & Brigham and Women's Hospital, Boston, Massachusetts, United States of America
| | - Ann R. Rittenhouse
- Program in Neuroscience, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Department of Physiology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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50
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Farioli Vecchioli S, Sacchetti S, Nicolis di Robilant V, Cutuli D. The Role of Physical Exercise and Omega-3 Fatty Acids in Depressive Illness in the Elderly. Curr Neuropharmacol 2018; 16:308-326. [PMID: 28901279 PMCID: PMC5843982 DOI: 10.2174/1570159x15666170912113852] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 06/20/2017] [Accepted: 07/30/2017] [Indexed: 02/07/2023] Open
Abstract
Background: In adulthood, depression is the most common type of mental illness and will be the second leading cause of disease by 2020. Major depression dramatically affects the function of the central nervous system and degrades the quality of life, especially in old age. Several mechanisms underlie the pathophysiology of depressive illness, since it has a multifactorial etiology. Human and an-imal studies have demonstrated that depression is mainly associated with imbalances in neurotransmitters and neurotrophins, hypothalamic-pituitary-adrenal axis alterations, brain volume changes, neurogenesis dysfunction, and dysregulation of in-flammatory pathways. Also the gut microbiota may influence mental health outcomes. Although depression is not a consequence of normal aging, depressive disorders are common in later life, even if often undi-agnosed or mis-diagnosed in old age. When untreated, depression reduces life expectancy, worsens medical illnesses, en-hances health care costs and is the primary cause of suicide among older people. To date, the underpinnings of depression in the elderly are still to be understood, and the pharmacological treatment is the most commonly used therapy. Objective: Since a sedentary lifestyle and poor eating habits have recently emerged as crucial contributors to the genesis and course of depression, in the present review, we have focused on the effects of physical activity and omega-3 fatty acids on depressive illness in the elderly. Results: A growing literature indicates that both exercise and dietary interventions can promote mental health throughout one’s lifespan. Conclusion: There thus emerges the awareness that an active lifestyle and a balanced diet may constitute valid low-cost pre-vention strategies to counteract depressive illness in the elderly.
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Affiliation(s)
- Stefano Farioli Vecchioli
- Institute of Cell Biology and Neurobiology, CNR/Fondazione Santa Lucia, Via del Fosso di Fiorano 64, 00143, Rome, Italy
| | - Stefano Sacchetti
- Laboratory of Experimental and Behavioral Neurophysiology, Fondazione Santa Lucia, Via del Fosso di Fiorano 64, 00143, Rome, Italy.,Department of Psychology, University Sapienza of Rome, Via dei Marsi 78, 00185, Rome, Italy
| | - V Nicolis di Robilant
- Institute of Cell Biology and Neurobiology, CNR/Fondazione Santa Lucia, Via del Fosso di Fiorano 64, 00143, Rome, Italy
| | - Debora Cutuli
- Laboratory of Experimental and Behavioral Neurophysiology, Fondazione Santa Lucia, Via del Fosso di Fiorano 64, 00143, Rome, Italy.,Department of Psychology, University Sapienza of Rome, Via dei Marsi 78, 00185, Rome, Italy
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