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Borsini A, Nicolaou A, Camacho-Muñoz D, Kendall AC, Di Benedetto MG, Giacobbe J, Su KP, Pariante CM. Omega-3 polyunsaturated fatty acids protect against inflammation through production of LOX and CYP450 lipid mediators: relevance for major depression and for human hippocampal neurogenesis. Mol Psychiatry 2021; 26:6773-6788. [PMID: 34131267 PMCID: PMC8760043 DOI: 10.1038/s41380-021-01160-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 02/04/2023]
Abstract
Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) can exert antidepressant, anti-inflammatory and neuroprotective properties, but the exact molecular mechanism underlying their effects is still not fully understood. We conducted both in vitro and clinical investigations to test which EPA or DHA metabolites are involved in these anti-inflammatory, neuroprotective and antidepressant effects. In vitro, we used the human hippocampal progenitor cell line HPC0A07/03C, and pre-treated cells with either EPA or DHA, followed by interleukin 1beta (IL1β), IL6 and interferon-alpha (IFN-α). Both EPA and DHA prevented the reduction in neurogenesis and the increase in apoptosis induced by these cytokines; moreover, these effects were mediated by the lipoxygenase (LOX) and cytochrome P450 (CYP450) EPA/DHA metabolites, 5-hydroxyeicosapentaenoic acid (HEPE), 4-hydroxydocosahexaenoic acid (HDHA), 18-HEPE, 20-HDHA, 17(18)-epoxyeicosatetraenoic acid (EpETE) and 19(20)-epoxydocosapentaenoic acid (EpDPA), detected here for the first time in human hippocampal neurones using mass spectrometry lipidomics of the supernatant. In fact, like EPA/DHA, co-treatment with these metabolites prevented cytokines-induced reduction in neurogenesis and apoptosis. Moreover, co-treatment with 17(18)-EpETE and 19(20)-EpDPA and the soluble epoxide hydroxylase (sEH) inhibitor, TPPU (which prevents their conversion into dihydroxyeicosatetraenoic acid (DiHETE)/ dihydroxydocosapentaenoic acid (DiHDPA) metabolites) further enhanced their neurogenic and anti-apoptotic effects. Interestingly, these findings were replicated in a sample of n = 22 patients with a DSM-IV Major Depressive Disorder, randomly assigned to treatment with either EPA (3.0 g/day) or DHA (1.4 g/day) for 12 weeks, with exactly the same LOX and CYP450 lipid metabolites increased in the plasma of these patients following treatment with their precursor, EPA or DHA, and some evidence that higher levels of these metabolites were correlated with less severe depressive symptoms. Overall, our study provides the first evidence for the relevance of LOX- and CYP450-derived EPA/DHA bioactive lipid metabolites as neuroprotective molecular targets for human hippocampal neurogenesis and depression, and highlights the importance of sEH inhibitors as potential therapeutic strategy for patients suffering from depressive symptoms.
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Affiliation(s)
- Alessandra Borsini
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK.
| | - Anna Nicolaou
- Laboratory for Lipidomics and Lipid Biology, Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Dolores Camacho-Muñoz
- Laboratory for Lipidomics and Lipid Biology, Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Alexandra C Kendall
- Laboratory for Lipidomics and Lipid Biology, Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Maria Grazia Di Benedetto
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK
- Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio, Fatebenefratelli, Brescia, Italy
| | - Juliette Giacobbe
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK
| | - Kuan-Pin Su
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK.
- College of Medicine, China Medical University, Taichung, Taiwan.
- Depression Center, An-Nan Hospital, China Medical University, Tainan, Taiwan.
| | - Carmine M Pariante
- Stress, Psychiatry and Immunology Laboratory, Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK
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2
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Aleman RS, Morris A, Prinyawiwatkul W, Moncada M, King JM. Physicochemical properties of Frontière rice flour and its application in a gluten‐free cupcake. Cereal Chem 2021. [DOI: 10.1002/cche.10484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ricardo S. Aleman
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - Anita Morris
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - Witoon Prinyawiwatkul
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - Marvin Moncada
- Department of Food, Bioprocessing, and Nutrition Sciences North Carolina State University NC USA
| | - Joan M. King
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
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3
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Díaz M, Mesa-Herrera F, Marín R. DHA and Its Elaborated Modulation of Antioxidant Defenses of the Brain: Implications in Aging and AD Neurodegeneration. Antioxidants (Basel) 2021; 10:antiox10060907. [PMID: 34205196 PMCID: PMC8228037 DOI: 10.3390/antiox10060907] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 02/06/2023] Open
Abstract
DHA (docosahexaenoic acid) is perhaps the most pleiotropic molecule in nerve cell biology. This long-chain highly unsaturated fatty acid has evolved to accomplish essential functions ranging from structural components allowing fast events in nerve cell membrane physiology to regulation of neurogenesis and synaptic function. Strikingly, the plethora of DHA effects has to take place within the hostile pro-oxidant environment of the brain parenchyma, which might suggest a molecular suicide. In order to circumvent this paradox, different molecular strategies have evolved during the evolution of brain cells to preserve DHA and to minimize the deleterious effects of its oxidation. In this context, DHA has emerged as a member of the “indirect antioxidants” family, the redox effects of which are not due to direct redox interactions with reactive species, but to modulation of gene expression within thioredoxin and glutathione antioxidant systems and related pathways. Weakening or deregulation of these self-protecting defenses orchestrated by DHA is associated with normal aging but also, more worryingly, with the development of neurodegenerative diseases. In the present review, we elaborate on the essential functions of DHA in the brain, including its role as indirect antioxidant, the selenium connection for proper antioxidant function and their changes during normal aging and in Alzheimer’s disease.
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Affiliation(s)
- Mario Díaz
- Laboratory of Membrane Physiology and Biophysics, Department of Animal Biology, School of Biology, Universidad de La Laguna, 38206 Tenerife, Spain;
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias (IUETSP), Universidad de La Laguna, 38206 Tenerife, Spain
- Unidad Asociada ULL-CSIC “Fisiología y Biofísica de la Membrana Celular en Enfermedades Neurodegenerativas y Tumorales”, 38206 Tenerife, Spain;
- Correspondence:
| | - Fátima Mesa-Herrera
- Laboratory of Membrane Physiology and Biophysics, Department of Animal Biology, School of Biology, Universidad de La Laguna, 38206 Tenerife, Spain;
| | - Raquel Marín
- Unidad Asociada ULL-CSIC “Fisiología y Biofísica de la Membrana Celular en Enfermedades Neurodegenerativas y Tumorales”, 38206 Tenerife, Spain;
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, School of Medicine, Universidad de La Laguna, 38206 Tenerife, Spain
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4
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Rajasinghe LD, Chauhan PS, Wierenga KA, Evered AO, Harris SN, Bates MA, Gavrilin MA, Pestka JJ. Omega-3 Docosahexaenoic Acid (DHA) Impedes Silica-Induced Macrophage Corpse Accumulation by Attenuating Cell Death and Potentiating Efferocytosis. Front Immunol 2020; 11:2179. [PMID: 33123123 PMCID: PMC7573148 DOI: 10.3389/fimmu.2020.02179] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 08/10/2020] [Indexed: 12/18/2022] Open
Abstract
Airway exposure of lupus-prone NZBWF1 mice to crystalline silica (cSiO2), a known trigger of human autoimmune disease, elicits sterile inflammation and alveolar macrophage death in the lung that, in turn, induces early autoimmune onset and accelerates lupus progression to fatal glomerulonephritis. Dietary supplementation with docosahexaenoic acid (DHA), a marine ω-3 polyunsaturated fatty acid (PUFA), markedly ameliorates cSiO2-triggered pulmonary, systemic, and renal manifestations of lupus. Here, we tested the hypothesis that DHA influences both cSiO2-induced death and efferocytotic clearance of resultant cell corpses using three murine macrophage models: (i) primary alveolar macrophages (AM) isolated from NZBWF1 mice; (ii) self-renewing AM-like Max Planck Institute (MPI) cells isolated from fetuses of C57BL/6 mice, and (iii) RAW 264.7 murine macrophages, a virus-transformed cell line derived from BALB/c mice stably transfected with the inflammasome adaptor protein ASC (RAW-ASC). Incubation with cSiO2 at 25 and 50 μg/ml for 6 h was found to dose-dependently induce cell death (p < 0.05) in all three models as determined by both acridine orange/propidium iodide staining and release of lactate dehydrogenase into cell culture supernatant. Pre-incubation with DHA at a physiologically relevant concentration (25 μM) significantly reduced cSiO2-induced death (p < 0.05) in all three models. Cell death induction by cSiO2 alone and its suppression by DHA were primarily associated with caspase-3/7 activation, suggestive of apoptosis, in AM, MPI, and RAW-ASC cells. Fluorescence microscopy revealed that all three macrophage models were similarly capable of efferocytosing RAW-ASC target cell corpses. Furthermore, MPI effector cells could likewise engulf RAW-ASC target cell corpses elicited by treatment with staurosporine (apoptosis), LPS, and nigericin (pyroptosis), or cSiO2. Pre-incubation of RAW-ASC target cells with 25 μM DHA prior to death induced by these agents significantly enhanced their efferocytosis (p < 0.05) by MPI effector cells. In contrast, pre-incubating MPI effector cells with DHA did not affect engulfment of RAW-ASC target cells pre-incubated with vehicle. Taken together, these findings indicate that DHA at a physiologically relevant concentration was capable of attenuating macrophage death and could potentiate efferocytosis, with the net effect of reducing accumulation of cell corpses capable of eliciting autoimmunity.
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Affiliation(s)
- Lichchavi D Rajasinghe
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Preeti S Chauhan
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Kathryn A Wierenga
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States
| | - Augustus O Evered
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Shamya N Harris
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Melissa A Bates
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Mikhail A Gavrilin
- Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University, Columbus, OH, United States
| | - James J Pestka
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
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5
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Miranda-Díaz AG, García-Sánchez A, Cardona-Muñoz EG. Foods with Potential Prooxidant and Antioxidant Effects Involved in Parkinson's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6281454. [PMID: 32832004 PMCID: PMC7424374 DOI: 10.1155/2020/6281454] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/02/2020] [Accepted: 07/18/2020] [Indexed: 12/20/2022]
Abstract
Oxidative stress plays a fundamental role in the pathogenesis of Parkinson's disease (PD). Oxidative stress appears to be responsible for the gradual dysfunction that manifests via numerous cellular pathways throughout PD progression. This review will describe the prooxidant effect of excessive consumption of processed food. Processed meat can affect health due to its high sodium content, advanced lipid oxidation end-products, cholesterol, and free fatty acids. During cooking, lipids can react with proteins to form advanced end-products of lipid oxidation. Excessive consumption of different types of carbohydrates is a risk factor for PD. The antioxidant effects of some foods in the regular diet provide an inconclusive interpretation of the environment's mechanisms with the modulation of oxidation stress-induced PD. Some antioxidant molecules are known whose primary mechanism is the neuroprotective effect. The melatonin mechanism consists of neutralizing reactive oxygen species (ROS) and inducing antioxidant enzyme's expression and activity. N-acetylcysteine protects against the development of PD by restoring levels of brain glutathione. The balanced administration of vitamin B3, ascorbic acid, vitamin D and the intake of caffeine every day seem beneficial for brain health in PD. Excessive chocolate intake could have adverse effects in PD patients. The findings reported to date do not provide clear benefits for a possible efficient therapeutic intervention by consuming the nutrients that are consumed regularly.
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Affiliation(s)
| | - Andrés García-Sánchez
- Department of Physiology, University Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Ernesto Germán Cardona-Muñoz
- Department of Physiology, University Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
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6
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Borsini A, Stangl D, Jeffries AR, Pariante CM, Thuret S. The role of omega-3 fatty acids in preventing glucocorticoid-induced reduction in human hippocampal neurogenesis and increase in apoptosis. Transl Psychiatry 2020; 10:219. [PMID: 32636362 PMCID: PMC7341841 DOI: 10.1038/s41398-020-00908-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 12/21/2022] Open
Abstract
Glucocorticoids have been suggested to be involved in several neuropsychiatric disorders, including depression. One of the possible mechanisms through which glucocorticoids contribute to the development of the depressive symptomatology is via regulation of distinct neurogenic mechanisms in the brain. A preventive or protective approach for these patients might be the use of omega-3 polyunsaturated fatty acids (n-3 PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are known for they neuroprotective properties. We used the human hippocampal progenitor cell line HPC0A07/03C and pre-treated cells with either EPA or DHA, followed by treatment with the glucocorticoid cortisol either alone, or in co-treatment with the same n-3 PUFA during subsequent 3 days of proliferation and 7 days of differentiation. During proliferation, both EPA and DHA were able to prevent cortisol-induced reduction in proliferation and increase in apoptosis, when used in pre-treatment, and both pre- and co-treatment. During differentiation, EPA was able to prevent cortisol-induced reduction in neurogenesis and increase in apoptosis, when used in pre-treatment, and both pre- and co-treatment only during the proliferation stage; however, DHA required continuous treatment also during the differentiation stage to prevent cortisol-induced reduction in neurogenesis. Using transcriptomic analyses, we showed that both EPA and DHA regulated pathways involved in oxidative stress and immune response [e.g., nuclear factor (erythroid-derived 2)-like 2 (Nrf2), Signal transducer and activator of transcription 3 (STAT3), Interferon (IFN) and Interleukin (IL)-1 signaling], whereas DHA also regulated pathways involved in cell development and neuronal formation [e.g., cAMP-response element binding protein (CREB) signaling]. We provide the first evidence for treatment with both EPA and DHA to prevent cortisol-induced reduction in human hippocampal neurogenesis, and identify novel molecular mechanisms underlying these effects.
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Affiliation(s)
- Alessandra Borsini
- Section of Stress, Psychiatry and Immunology & Perinatal Psychiatry, King's College London, Institute of Psychiatry, Psychology & Neuroscience, Department of Psychological Medicine, London, UK.
- King's College London, Institute of Psychiatry, Psychology & Neuroscience, Department of Basic and Clinical Neuroscience, London, UK.
| | - Doris Stangl
- King's College London, Institute of Psychiatry, Psychology & Neuroscience, Department of Basic and Clinical Neuroscience, London, UK
| | | | - Carmine M Pariante
- Section of Stress, Psychiatry and Immunology & Perinatal Psychiatry, King's College London, Institute of Psychiatry, Psychology & Neuroscience, Department of Psychological Medicine, London, UK
| | - Sandrine Thuret
- King's College London, Institute of Psychiatry, Psychology & Neuroscience, Department of Basic and Clinical Neuroscience, London, UK.
- Department of Neurology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
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7
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Li P, Song C. Potential treatment of Parkinson’s disease with omega-3 polyunsaturated fatty acids. Nutr Neurosci 2020; 25:180-191. [DOI: 10.1080/1028415x.2020.1735143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Peng Li
- Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, People’s Republic of China
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, People’s Republic of China
| | - Cai Song
- Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, People’s Republic of China
- Marine Medicine Research and Development Center of Shenzhen Institutes of Guangdong Ocean University, Shenzhen, People’s Republic of China
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8
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Sghaier R, Zarrouk A, Nury T, Badreddine I, O'Brien N, Mackrill JJ, Vejux A, Samadi M, Nasser B, Caccia C, Leoni V, Moreau T, Cherkaoui-Malki M, Salhedine Masmoudi A, Lizard G. Biotin attenuation of oxidative stress, mitochondrial dysfunction, lipid metabolism alteration and 7β-hydroxycholesterol-induced cell death in 158N murine oligodendrocytes. Free Radic Res 2019; 53:535-561. [PMID: 31039616 DOI: 10.1080/10715762.2019.1612891] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Mitochondrial dysfunction and oxidative stress are involved in neurodegenerative diseases associated with an enhancement of lipid peroxidation products such as 7β-hydroxycholesterol (7β-OHC). It is, therefore, important to study the ability of 7β-OHC to trigger mitochondrial defects, oxidative stress, metabolic dysfunctions and cell death, which are hallmarks of neurodegeneration, and to identify cytoprotective molecules. The effects of biotin were evaluated on 158N murine oligodendrocytes, which are myelin synthesizing cells, exposed to 7β-OHC (50 µM) with or without biotin (10 and 100 nM) or α-tocopherol (positive control of cytoprotection). The effects of biotin on 7β-OHC activities were determined using different criteria: cell adhesion; plasma membrane integrity; redox status. The impact on mitochondria was characterized by the measurement of transmembrane mitochondrial potential (ΔΨm), reactive oxygen species (ROS) overproduction, mitochondrial mass, quantification of cardiolipins and organic acids. Sterols and fatty acids were also quantified. Cell death (apoptosis, autophagy) was characterized by the enumeration of apoptotic cells, caspase-3 activation, identification of autophagic vesicles, and activation of LC3-I into LC3-II. Biotin attenuates 7β-OHC-induced cytotoxicity: loss of cell adhesion was reduced; antioxidant activities were normalized. ROS overproduction, protein and lipid oxidation products were decreased. Biotin partially restores mitochondrial functions: attenuation of the loss of ΔΨm; reduced levels of mitochondrial O2•- overproduction; normalization of cardiolipins and organic acid levels. Biotin also normalizes cholesterol and fatty acid synthesis, and prevents apoptosis and autophagy (oxiapoptophagy). Our data support that biotin, which prevents oligodendrocytes damages, could be useful in the treatment of neurodegeneration and demyelination.
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Affiliation(s)
- Randa Sghaier
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France.,Laboratory of Biochemistry, Faculty of Medicine , University Sousse , Sousse , Tunisia.,Faculty of Medicine, Laboratory - NAFS "Nutrition - Functional Food & Vascular Health" , Monastir & University Sousse , Sousse , Tunisia.,Laboratory of Biotechnology and Valorisation of Bio-Géo Ressources , University Manouba, Higher Institute of Biotechnology , Sidi Thabet , Tunisia
| | - Amira Zarrouk
- Laboratory of Biochemistry, Faculty of Medicine , University Sousse , Sousse , Tunisia.,Faculty of Medicine, Laboratory - NAFS "Nutrition - Functional Food & Vascular Health" , Monastir & University Sousse , Sousse , Tunisia.,School of Food and Nutritional Sciences , University College Cork , Cork , Ireland.,Department of Physiology , Biosciences Institute, University College Cork , Cork , Ireland
| | - Thomas Nury
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France
| | - Ilham Badreddine
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France.,University Ibn Zohr, Lab. 'Valorisation des Ressources Naturelles et Environnement' , Taroudant , Morocco.,Laboratory Neuroscience and Biochemistry , University Hassan 1er , Settat , Morocco
| | - Nora O'Brien
- School of Food and Nutritional Sciences , University College Cork , Cork , Ireland
| | - John J Mackrill
- Department of Physiology , Biosciences Institute, University College Cork , Cork , Ireland
| | - Anne Vejux
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France
| | - Mohammad Samadi
- Department of Chemistry , University Lorraine, Metz Technopôle , Metz , France
| | - Boubker Nasser
- Laboratory Neuroscience and Biochemistry , University Hassan 1er , Settat , Morocco
| | - Claudio Caccia
- Laboratory of Medical Genetics and Neurogenetics , Foundation IRCCS Istituto Neurologico Carlo Besta , Milan , Italy
| | - Valerio Leoni
- Laboratory of Clinical Chemistry , Hospital of Varese, ASST-Settelaghi , Milan , Italy
| | - Thibault Moreau
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France.,Department of Neurology , University Hospital , Dijon , France
| | - Mustapha Cherkaoui-Malki
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France
| | - Ahmed Salhedine Masmoudi
- Laboratory of Biotechnology and Valorisation of Bio-Géo Ressources , University Manouba, Higher Institute of Biotechnology , Sidi Thabet , Tunisia
| | - Gérard Lizard
- University Bourgogne Franche-Comté/Inserm , Team 'Biochemistry of the Peroxisome, Inflammation and Lipid Metabolism' , Dijon , France
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9
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Omega-3 Docosahexaenoic Acid Is a Mediator of Fate-Decision of Adult Neural Stem Cells. Int J Mol Sci 2019; 20:ijms20174240. [PMID: 31480215 PMCID: PMC6747551 DOI: 10.3390/ijms20174240] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
The mammalian brain is enriched with lipids that serve as energy catalyzers or secondary messengers of essential signaling pathways. Docosahexaenoic acid (DHA) is an omega-3 fatty acid synthesized de novo at low levels in humans, an endogenous supply from its precursors, and is mainly incorporated from nutrition, an exogeneous supply. Decreased levels of DHA have been reported in the brains of patients with neurodegenerative diseases. Preventing this decrease or supplementing the brain with DHA has been considered as a therapy for the DHA brain deficiency that could be linked with neuronal death or neurodegeneration. The mammalian brain has, however, a mechanism of compensation for loss of neurons in the brain: neurogenesis, the birth of neurons from neural stem cells. In adulthood, neurogenesis is still present, although at a slower rate and with low efficiency, where most of the newly born neurons die. Neural stem/progenitor cells (NSPCs) have been shown to require lipids for proper metabolism for proliferation maintenance and neurogenesis induction. Recent studies have focused on the effects of these essential lipids on the neurobiology of NSPCs. This review aimed to introduce the possible use of DHA to impact NSPC fate-decision as a therapy for neurodegenerative diseases.
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10
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Hyperlocomotion and anxiety- like behavior induced by binge ethanol exposure in rat neonates. Possible ameliorative effects of Omega 3. Behav Brain Res 2019; 372:112022. [PMID: 31181220 DOI: 10.1016/j.bbr.2019.112022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 11/20/2022]
Abstract
Maternal alcohol consumption during pregnancy may cause neurocognitive and behavioral disorders that can persist until adulthood. Epidemiological data has revealed an alarming increase in the frequency of alcohol intake in pregnant women. Nutritional variables may also have an impact on the behavioral alterations occasioned by alcohol during development. Moreover, omega-3, a polyunsaturated fatty acid necessary for normal brain development, is deficient in ethanol-treated animals. Although studies have shown that omega-3 supplementation after prenatal ethanol (EtOH) treatment improves some disorders, there are no reports about acute treatment with omega-3 in binge alcohol neurotoxic models during postnatal development. The goal of this study was to determine whether an administration of omega-3, after an acute ethanol dose in neonates, would be able to attenuate alcohol effects in offspring. Male/ female rats were administered ethanol (2.5 g/kg s.c. at 0 and 2 h) or saline on postnatal day (PND) 7, with a single dose of omega-3 (720 mg/kg) 15 min after the last alcohol injection. It was have found that EtOH-treated animals showed hyperlocomotion on PND 14 (pre-juvenile), and anxiety-like behavior was observed at all the three ages studied. Administration of omega-3 after EtOH treatment reduced hyperlocomotion and the anxiety-like behaviors on PND 14, but did not diminish the anxiety on either PND 20 or 30 (juvenile). In conclusion, acute ethanol exposure produced neurobehavioral alterations that persisted in the offspring, with omega-3 able to ameliorate these effects on PND 14. These data are relevant considering that omega-3 administration may have therapeutic effects through mitigating some of ethanol´s damaging consequences.
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11
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Morales-Martínez A, Sánchez-Mendoza A, Martínez-Lazcano JC, Pineda-Farías JB, Montes S, El-Hafidi M, Martínez-Gopar PE, Tristán-López L, Pérez-Neri I, Zamorano-Carrillo A, Castro N, Ríos C, Pérez-Severiano F. Essential fatty acid-rich diets protect against striatal oxidative damage induced by quinolinic acid in rats. Nutr Neurosci 2016; 20:388-395. [DOI: 10.1080/1028415x.2016.1147683] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Adriana Morales-Martínez
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
- Laboratorio de Investigación de Bioquímica y Biofísica Computacional, Escuela Nacional de Medicina y de Homeopatía del IPN, Guillermo Massieu H. #239. La Escalera, Gustavo A. Madero, 07320 México D.F., México
| | - Alicia Sánchez-Mendoza
- Departamento de Farmacología, Instituto Nacional de Cardiología “Ignacio Chávez”, Juan Badiano #1, Col. Sección XVI, Tlalpan, México D.F., México
| | - Juan Carlos Martínez-Lazcano
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Jorge Baruch Pineda-Farías
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Mohammed El-Hafidi
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología “Ignacio Chávez”, Juan Badiano 1, Col. Sección XVI. Tlalpan, México D.F., México
| | - Pablo Eliasib Martínez-Gopar
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Luis Tristán-López
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Iván Pérez-Neri
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Absalom Zamorano-Carrillo
- Laboratorio de Investigación de Bioquímica y Biofísica Computacional, Escuela Nacional de Medicina y de Homeopatía del IPN, Guillermo Massieu H. #239. La Escalera, Gustavo A. Madero, 07320 México D.F., México
| | - Nelly Castro
- Laboratorio de Neuropsicofarmacología, Instituto Nacional de Neurología y Neurocirugía, Insurgentes sur 3877, La Fama, Tlalpan, 14269 México D.F., México
| | - Camilo Ríos
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
| | - Francisca Pérez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Insurgentes Sur #3877, Col. La Fama, Tlalpan, 14269 México D.F., México
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Protection against Oxygen-Glucose Deprivation/Reperfusion Injury in Cortical Neurons by Combining Omega-3 Polyunsaturated Acid with Lyciumbarbarum Polysaccharide. Nutrients 2016; 8:nu8010041. [PMID: 26771636 PMCID: PMC4728654 DOI: 10.3390/nu8010041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 12/03/2015] [Accepted: 12/07/2015] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke, characterized by the disturbance of the blood supply to the brain, is a severe worldwide health threat with high mortality and morbidity. However, there is no effective pharmacotherapy for ischemic injury. Currently, combined treatment is highly recommended for this devastating injury. In the present study, we investigated neuroprotective effects of the combination of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) and Lyciumbarbarum polysaccharide (LBP) on cortical neurons using an in vitro ischemic model. Our study demonstrated that treatment with docosahexaenoic acid (DHA), a major component of the ω-3 PUFAs family, significantly inhibited the increase of intracellular Ca2+ in cultured wild type (WT) cortical neurons subjected to oxygen-glucose deprivation/reperfusion (OGD/R) injury and promoted their survival compared with the vehicle-treated control. The protective effects were further confirmed in cultured neurons with high endogenous ω-3 PUFAs that were isolated from fat-1 mice, in that a higher survival rate was found in fat-1 neurons compared with wild-type neurons after OGD/R injury. Our study also found that treatment with LBP (50 mg/L) activated Trk-B signaling in cortical neurons and significantly attenuated OGD/R-induced cell apoptosis compared with the control. Notably, both combining LBP treatment with ω-3 PUFAs administration to WT neurons and adding LBP to fat-1 neurons showed enhanced effects on protecting cortical neurons against OGD/R injury via concurrently regulating the intracellular calcium overload and neurotrophic pathway. The results of the study suggest that ω-3 PUFAs and LBP are promising candidates for combined pharmacotherapy for ischemic stroke.
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Henríquez-Henríquez M, Solari S, Várgas G, Vásquez L, Allende F, Castañón S C, Tenorio M, Quiroga Gutiérrez T. ω-3 Long-Chain Polyunsaturated Fatty Acids and Fatty Acid Desaturase Activity Ratios as Eventual Endophenotypes for ADHD. J Atten Disord 2015; 19:977-86. [PMID: 23100268 DOI: 10.1177/1087054712461175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Epidemiological studies suggest that long-chain polyunsaturated fatty acids (LC-PUFAs) may be suitable as endophenotypes for ADHD. To be appropriated vulnerability traits, endophenotypes should be altered in unaffected relatives of index cases. Serum profiles of LC-PUFAs in unaffected relatives of ADHD patients remain understudied. The main objective of this study was to compare serum LC-PUFAs in ADHD patients, unaffected relatives of index cases, and general-population unaffected participants. METHOD LC-PUFA profiles of 72 participants (27 ADHD patients, 27 unaffected relatives, and 18 general-population participants) were obtained by gas chromatography-mass spectrometry (GC-MS). Groups were compared by parametrical statistics. RESULTS Unaffected females from the general population presented lower Docosapentaenoic acid (DPA; p = .0012) and a-linolenic acid (ALA; p = .0091) levels compared with ADHD females and unaffected relatives. In addition, docosahexaenoic acid (DHA)/ALA and DHA/DPA ratios, addressing desaturase activity, were significantly lower in ADHD patients and unaffected relatives of ADHD patients in the female-subgroup (p = .022 and .04, respectively). CONCLUSION DHA/ALA, DHA/DPA, serum DPA, and serum ALA may be suitable as endophenotypes for ADHD women.
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Affiliation(s)
| | - Sandra Solari
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gisela Várgas
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Luis Vásquez
- Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Fidel Allende
- Pontificia Universidad Católica de Chile, Santiago, Chile
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Zhang W, Liu J, Hu X, Li P, Leak RK, Gao Y, Chen J. n-3 Polyunsaturated Fatty Acids Reduce Neonatal Hypoxic/Ischemic Brain Injury by Promoting Phosphatidylserine Formation and Akt Signaling. Stroke 2015; 46:2943-50. [PMID: 26374481 DOI: 10.1161/strokeaha.115.010815] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 08/13/2015] [Indexed: 01/24/2023]
Abstract
BACKGROUND AND PURPOSE Omega-3 polyunsaturated fatty acids (n-3 PUFAs) attenuate neonatal hypoxic/ischemic (H/I) brain damage, but the underlying mechanisms are not fully understood. This study tested the hypothesis that n-3 PUFAs enhance Akt-dependent prosurvival signaling by promoting the biosynthesis of phosphatidylserine in neuronal cell membranes. METHODS Dietary n-3 PUFA supplementation was initiated on the second day of pregnancy in dams. H/I was induced in 7-day-old rat pups by ipsilateral common carotid artery occlusion followed by hypoxia (8% oxygen for 2.5 hours). Neurological outcomes, brain tissue loss, cell death, and the activation of signaling events were assessed after H/I. The effects of n-3 PUFAs (docosahexaenoic acid and eicosapentaenoic acid) on oxygen-glucose deprivation-induced cell death and the underlying mechanism of protection were also examined in primary cortical neuron cultures. RESULTS n-3 PUFAs reduced brain tissue loss at 7 days after H/I and improved neurological outcomes, whereas inhibition of PI3K/Akt signaling by LY294002 partially abrogated this neuroprotective effect. Docosahexaenoic acid/eicosapentaenoic acid also prevented ischemic neuronal death through the Akt prosurvival pathway in vitro. Furthermore, docosahexaenoic acid/eicosapentaenoic acid increased the production of phosphatidylserine, the major membrane-bound phospholipids, after ischemia both in vitro and in vivo. A reduction in membrane phosphatidylserine by shRNA-mediated knockdown of phosphatidylserine synthetase-1 attenuated Akt activation and neuronal survival after docosahexaenoic acid/eicosapentaenoic acid treatment in the oxygen-glucose deprivation model. CONCLUSIONS n-3 PUFAs robustly protect against H/I-induced brain damage in neonates by activating Akt prosurvival pathway in compromised neurons. In addition, n-3 PUFAs promote the formation of membrane phosphatidylserine, thereby promoting Akt activity and improving cellular survival.
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Affiliation(s)
- Wenting Zhang
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.).
| | - Jia Liu
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.)
| | - Xiaoming Hu
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.)
| | - Peiying Li
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.)
| | - Rehana K Leak
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.)
| | - Yanqin Gao
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.)
| | - Jun Chen
- From the State Key Laboratory of Medical Neurobiology, Institute of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China (W.Z., J.L., X.H., P.L., Y.G., J.C.); Center of Cerebrovascular Disease Research, Department of Neurology, University of Pittsburgh School of Medicine, PA (X.H., J.C.); Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA (R.K.L.); Geriatric Research, Educational and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA (X.H., J.C.).
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Mohibbullah M, Hannan MA, Choi JY, Bhuiyan MMH, Hong YK, Choi JS, Choi IS, Moon IS. The Edible Marine Alga Gracilariopsis chorda Alleviates Hypoxia/Reoxygenation-Induced Oxidative Stress in Cultured Hippocampal Neurons. J Med Food 2015; 18:960-71. [PMID: 26106876 PMCID: PMC4580144 DOI: 10.1089/jmf.2014.3369] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 04/09/2015] [Indexed: 01/14/2023] Open
Abstract
Age-related neurological disorders are of growing concern among the elderly, and natural products with neuroprotective properties have been attracting increasing attention as candidates for the prevention or treatment of neurological disorders induced by oxidative stress. In an effort to explore natural resources, we collected some common marine seaweed from the Korean peninsula and Indonesia and screened them for neuroprotective activity against hypoxia/reoxygenation (H/R)-induced oxidative stress. Of the 23 seaweeds examined, the ethanol extract of Gracilariopsis chorda (GCE) provided maximum neuroprotection at an optimum concentration of 15 μg/mL, followed by Undaria pinnatifida. GCE increased cell viability after H/R, decreased the formation of reactive oxygen species (measured by 2',7'-dichlorodihydrofluorescein diacetate [DCF-DA] staining), and inhibited the double-stranded DNA breaks (measured by H2AX immunocytochemistry), apoptosis (measured by Annexin V/propidium iodide staining), internucleosomal DNA fragmentation (measured by DNA laddering), and dissipation of mitochondrial membrane potential (measured by JC-1 staining). Using reverse-phase high-pressure liquid chromatography, we quantitated the arachidonic acid (AA) in GCE, which provides neuroprotection against H/R-induced oxidative stress. This neuroprotective effect of AA was comparable to that of GCE. These findings suggest that the neuroprotective effect of GCE against H/R-induced neuronal death is due, at least in part, to the AA content that suppresses neuronal apoptosis.
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Affiliation(s)
- Md. Mohibbullah
- Department of Biotechnology, Pukyong National University, Busan, Korea
| | - Md. Abdul Hannan
- Department of Biotechnology, Pukyong National University, Busan, Korea
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Ji-Young Choi
- Department of Biotechnology, Pukyong National University, Busan, Korea
| | | | - Yong-Ki Hong
- Department of Biotechnology, Pukyong National University, Busan, Korea
| | - Jae-Suk Choi
- RIS Center, IACF, Silla University, Busan, Korea
| | - In Soon Choi
- RIS Center, IACF, Silla University, Busan, Korea
- Department of Biological Science, Silla University, Busan, Korea
| | - Il Soo Moon
- Department of Anatomy, Dongguk University College of Medicine, Gyeongbuk, Korea
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Nury T, Zarrouk A, Mackrill JJ, Samadi M, Durand P, Riedinger JM, Doria M, Vejux A, Limagne E, Delmas D, Prost M, Moreau T, Hammami M, Delage-Mourroux R, O'Brien NM, Lizard G. Induction of oxiapoptophagy on 158N murine oligodendrocytes treated by 7-ketocholesterol-, 7β-hydroxycholesterol-, or 24(S)-hydroxycholesterol: Protective effects of α-tocopherol and docosahexaenoic acid (DHA; C22:6 n-3). Steroids 2015; 99:194-203. [PMID: 25683890 DOI: 10.1016/j.steroids.2015.02.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/23/2015] [Accepted: 02/03/2015] [Indexed: 11/30/2022]
Abstract
In demyelinating or non-demyelinating neurodegenerative diseases, increased levels of 7-ketocholesterol (7KC), 7β-hydroxycholesterol (7β-OHC) and 24(S)-hydroxycholesterol (24S-OHC) can be observed in brain lesions. In 158N murine oligodendrocytes, 7KC triggers a complex mode of cell death defined as oxiapoptophagy, involving simultaneous oxidative stress, apoptosis and autophagy. In these cells, 7KC as well as 7β-OHC and 24S-OHC induce a decrease of cell proliferation evaluated by phase contrast microscopy, an alteration of mitochondrial activity quantified with the MTT test, an overproduction of reactive oxygen species revealed by staining with dihydroethidium and dihydrorhodamine 123, caspase-3 activation, PARP degradation, reduced expression of Bcl-2, and condensation and/or fragmentation of the nuclei which are typical criteria of oxidative stress and apoptosis. Moreover, 7KC, 7β-OHC and 24S-OHC promote conversion of microtubule-associated protein light chain 3 (LC3-I) to LC3-II which is a characteristic of autophagy. Consequently, 7β-OHC and 24S-OHC, similarly to 7KC, can be considered as potent inducers of oxiapoptophagy. Furthermore, the different cytotoxic effects associated with 7KC, 7β-OHC and 24S-OHC-induced oxiapoptophagy are attenuated by vitamin E (VitE, α-tocopherol) and DHA which enhances VitE protective effects. In 158N murine oligodendrocytes, our data support the concept that oxiapoptophagy, which can be inhibited by VitE and DHA, could be a particular mode of cell death elicited by cytotoxic oxysterols.
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Affiliation(s)
- Thomas Nury
- Team 'Biochemistry of Peroxisome, Inflammation and Lipid Metabolism' EA 7270/University of Bourgogne-Franche Comté/INSERM, Dijon, France
| | - Amira Zarrouk
- Team 'Biochemistry of Peroxisome, Inflammation and Lipid Metabolism' EA 7270/University of Bourgogne-Franche Comté/INSERM, Dijon, France; University of Monastir, Faculty of Medicine, LR12ES05, Lab-NAFS 'Nutrition - Functional Food & Vascular Health', Monastir, Tunisia; Department of Physiology, University College Cork, BioSciences Institute, Cork, Ireland; School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - John J Mackrill
- Department of Physiology, University College Cork, BioSciences Institute, Cork, Ireland
| | - Mohammad Samadi
- LCPMC-A2, ICPM, Département de Chimie, Université de Lorraine, Metz, France
| | | | - Jean-Marc Riedinger
- Centre de Lutte Contre le Cancer GF Leclerc, Laboratoire de Biologie Médicale, Dijon, France
| | - Margaux Doria
- Team 'Biochemistry of Peroxisome, Inflammation and Lipid Metabolism' EA 7270/University of Bourgogne-Franche Comté/INSERM, Dijon, France
| | - Anne Vejux
- Team 'Biochemistry of Peroxisome, Inflammation and Lipid Metabolism' EA 7270/University of Bourgogne-Franche Comté/INSERM, Dijon, France
| | - Emeric Limagne
- Centre de Recherche INSERM U866 - 'Lipids, Nutrition, Cancer', Dijon, France
| | - Dominique Delmas
- Centre de Recherche INSERM U866 - 'Lipids, Nutrition, Cancer', Dijon, France
| | | | | | - Mohamed Hammami
- University of Monastir, Faculty of Medicine, LR12ES05, Lab-NAFS 'Nutrition - Functional Food & Vascular Health', Monastir, Tunisia
| | - Régis Delage-Mourroux
- UFR Sciences et Techniques EA3922/SFR IBCT FED 4234, University of Bourgogne-Franche Comté, Besançon, France
| | - Nora M O'Brien
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Gérard Lizard
- Team 'Biochemistry of Peroxisome, Inflammation and Lipid Metabolism' EA 7270/University of Bourgogne-Franche Comté/INSERM, Dijon, France.
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18
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Chua A, Thomas P, Wijesundera C, Clifton P, Fenech M. Effect of docosahexaenoic acid and furan fatty acids on cytokinesis block micronucleus cytome assay biomarkers in astrocytoma cell lines under conditions of oxidative stress. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2014; 55:573-590. [PMID: 24828973 DOI: 10.1002/em.21873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/24/2014] [Accepted: 04/25/2014] [Indexed: 06/03/2023]
Abstract
Fatty acids from fish such as docosahexaenoic acid (DHA) are associated with improved brain function, whereas furan fatty acids (FFAs) also found in fish oil at low levels (1%) are thought to have antioxidant properties. Understanding their effects in astrocytes is important as these cells are responsible for maintaining healthy neurons via lipid homeostasis and distribution within the brain, and their decline with aging is a possible cause of dementia. We investigated the cytotoxic and genotoxic effects of DHA and FFA using the cytokinesis-block micronucleus cytome assay in in vitro cultures of U87MG (APOE ɛ3/ɛ3) and U118MG (APOE ɛ2/ɛ4) astrocytoma cell lines with and without a hydrogen peroxide (H2O2, 100 µM) challenge. U118MG was found to be more sensitive to the cytostatic, cytotoxic (i.e., apoptosis), and DNA damaging effects [micronuclei (MNi), nucleoplasmic bridges (NPBs), and nuclear buds (NBUDs)] of H2O2 (P < 0.01 and P < 0.001) when compared with U87MG. DHA at 100 µg/mL significantly affected cytostasis (P < 0.05) and increased DNA damage in the form of NPBs and MNi (P < 0.05) in both cell lines, whereas it decreased necrosis (P = 0.0251) in U87MG. Significant DHA-H2O2 interactions were observed for decreased necrosis (P = 0.0033) and DNA damage biomarkers (P < 0.0001) in the U87MG cell line and increased cytostasis (P < 0.0001) in the U118MG cell line. The effects of FFA also varied between the cell lines, with significant effects observed in decreased cytostasis (P = 0.0022) in the U87MG cell line, whereas increasing cytostasis (P = 0.0144) in the U118MG cell line. Overall, FFA exerted minimal effects on DNA damage biomarkers.
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Affiliation(s)
- Ann Chua
- Department of Physiology, School of Medical Sciences, University of Adelaide, Adelaide, Australia; Nutrigenomics and Neurodegenerative Disease Prevention, Preventative Health Flagship, CSIRO, Animal, Food and Health Sciences, Adelaide, Australia
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Seidl SE, Santiago JA, Bilyk H, Potashkin JA. The emerging role of nutrition in Parkinson's disease. Front Aging Neurosci 2014; 6:36. [PMID: 24639650 PMCID: PMC3945400 DOI: 10.3389/fnagi.2014.00036] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 02/20/2014] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disease in ageing individuals. It is now clear that genetic susceptibility and environmental factors play a role in disease etiology and progression. Because environmental factors are involved with the majority of the cases of PD, it is important to understand the role nutrition plays in both neuroprotection and neurodegeneration. Recent epidemiological studies have revealed the promise of some nutrients in reducing the risk of PD. In contrast, other nutrients may be involved with the etiology of neurodegeneration or exacerbate disease progression. This review summarizes the studies that have addressed these issues and describes in detail the nutrients and their putative mechanisms of action in PD.
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Affiliation(s)
- Stacey E Seidl
- The Cellular and Molecular Pharmacology Department, The Chicago Medical School, Rosalind Franklin University of Medicine and Science North Chicago, IL, USA
| | - Jose A Santiago
- The Cellular and Molecular Pharmacology Department, The Chicago Medical School, Rosalind Franklin University of Medicine and Science North Chicago, IL, USA
| | - Hope Bilyk
- The Nutrition Department, The College of Health Professions, Rosalind Franklin University of Medicine and Science North Chicago, IL, USA
| | - Judith A Potashkin
- The Cellular and Molecular Pharmacology Department, The Chicago Medical School, Rosalind Franklin University of Medicine and Science North Chicago, IL, USA
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Mossaheb N, Schäfer MR, Schlögelhofer M, Klier CM, Cotton SM, McGorry PD, Amminger GP. Effect of omega-3 fatty acids for indicated prevention of young patients at risk for psychosis: when do they begin to be effective? Schizophr Res 2013; 148:163-7. [PMID: 23778032 DOI: 10.1016/j.schres.2013.05.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 04/30/2013] [Accepted: 05/23/2013] [Indexed: 10/26/2022]
Abstract
The results of a recent double-blind, randomized, placebo-controlled trial performed in 81 young patients at ultra-high risk for psychosis indicated that a 12-week intervention of 1.2g/day of ω-3 polyunsaturated fatty acids (PUFA) significantly reduced the risk of transition to psychosis and improved positive, negative and general symptoms as well as functioning. The aim of this post-hoc analysis was to determine at which time point ω-3 PUFAs start to significantly differ from placebo in improving psychopathology and functioning in young people at risk of developing psychosis. Analyses were performed using the mixed model repeated-measures analysis of variance. Compared to placebo, ω-3 PUFAs' significant effects on the amplitude of the reduction in General and Total PANSS scores are evident after the first four weeks of treatment; a reduction of positive symptoms and a lower mean PANSS positive score were apparent after eight weeks, whereas the significant drop in negative symptoms and the significant change and higher mean scores in global functioning occur later at 12weeks. The delay of onset of ω -3 PUFAs seems comparable to that of antipsychotics and antidepressants.
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Affiliation(s)
- Nilufar Mossaheb
- Department of Child and Adolescent Psychiatry, Medical University Vienna, Waehringer Guertel 18-10, 1090 Vienna, Austria.
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Yoshizawa K, Emoto Y, Kinoshita Y, Yuri T, Tsubura A. N-methyl-N-nitrosourea-induced cerebellar hypoplasia in rats: Effect of arachidonic acid supplementation during the gestational, lactational and post-weaning periods. Exp Ther Med 2013; 6:627-634. [PMID: 24137238 PMCID: PMC3786806 DOI: 10.3892/etm.2013.1219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 07/02/2013] [Indexed: 01/08/2023] Open
Abstract
Arachidonic acid (AA) is a fatty acid that is important for visual and brain development and is commonly added as a functional food ingredient to commercial infant formulas worldwide. However, few studies have examined whether AA supplementation during neonatal life has an effect on neuronal abnormalities. In the present study, the effect of dietary AA supplementation in dams during gestation and lactation was investigated by examining N-methyl-N-nitrosourea (MNU)-induced cerebellar hypoplasia in young Lewis rats. Dams were fed a 2.0% AA diet or a basal diet (<0.01% AA). At birth (postnatal day 0), male and female pups received a single intraperitoneal injection of 35 mg/kg MNU or vehicle. Brain weights were measured and a morphological analysis of macroscopic and histological specimens was conducted after 7, 14, 21, 28 and 60 days. Irrespective of whether the rats had been fed an AA diet, the brain weights of the MNU-treated rats, particularly the weights of the cerebellum, were decreased compared with those of the MNU-untreated rats from the 14th day following the MNU injection. Macroscopic reductions in the cerebellar length and/or width and histologically observed reductions in cerebellar vertex height and/or cortex width were also detected in the MNU-treated rats, irrespective of whether the rats had been fed with AA. Histopathologically, the MNU-treated rats (irrespective of AA supplementation) exhibited disorganization of the cerebellar cortex and disarrangement of the cortical layers (loss and/or disturbance of the molecular, Purkinje and granular cell layers). There were no significant differences in any parameters among the MNU-treated rats, irrespective of whether the rats had been fed an AA diet. In conclusion, an AA-rich diet for dams during gestation and lactation did not modify MNU-induced cerebellar hypoplasia in their offspring.
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Affiliation(s)
- Katsuhiko Yoshizawa
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
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Subramanian P, Locatelli-Hoops S, Kenealey J, DesJardin J, Notari L, Becerra SP. Pigment epithelium-derived factor (PEDF) prevents retinal cell death via PEDF Receptor (PEDF-R): identification of a functional ligand binding site. J Biol Chem 2013; 288:23928-42. [PMID: 23818523 DOI: 10.1074/jbc.m113.487884] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The extracellular pigment epithelium-derived factor (PEDF) displays retina survival activity by interacting with receptor proteins on cell surfaces. We have previously reported that PEDF binds and stimulates PEDF receptor (PEDF-R), a transmembrane phospholipase. However, the PEDF binding site of PEDF-R and its involvement in survival activity have not been identified. The purpose of this work is to identify a biologically relevant ligand-binding site on PEDF-R. PEDF bound the PEDF-R ectodomain L4 (Leu(159)-Met(325)) with affinity similar to the full-length PEDF-R (Met(1)-Leu(504)). Binding assays using synthetic peptides spanning L4 showed that PEDF selectively bound E5b (Ile(193)-Leu(232)) and P1 (Thr(210)-Leu(249)) peptides. Recombinant C-terminal truncated PEDF-R4 (Met(1)-Leu(232)) and internally truncated PEDF-R and PEDF-R4 (ΔHis(203)-Leu(232)) retained phospholipase activity of the full-length PEDF-R. However, PEDF-R polypeptides without the His(203)-Leu(232) region lost the PEDF affinity that stimulated their enzymatic activity. Cell surface labeling showed that PEDF-R is present in the plasma membranes of retina cells. Using siRNA to selectively knock down PEDF-R in retina cells, we demonstrated that PEDF-R is essential for PEDF-mediated cell survival and antiapoptotic activities. Furthermore, preincubation of PEDF with P1 and E5b peptides blocked the PEDF·PEDF-R-mediated retina cell survival activity, implying that peptide binding to PEDF excluded ligand-receptor interactions on the cell surface. Our findings establish that PEDF-R is required for the survival and antiapoptotic effects of PEDF on retina cells and has determinants for PEDF binding within its L4 ectodomain that are critical for enzymatic stimulation.
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Affiliation(s)
- Preeti Subramanian
- Section of Protein Structure and Function, Laboratory of Retinal Cell and Molecular Biology, NEI, National Institutes of Health, Bethesda, Maryland 20892, USA
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Das UN. Polyunsaturated fatty acids and their metabolites in the pathobiology of schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2013; 42:122-34. [PMID: 22735394 DOI: 10.1016/j.pnpbp.2012.06.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Revised: 05/27/2012] [Accepted: 06/13/2012] [Indexed: 01/01/2023]
Abstract
Schizophrenia can be considered as a low-grade systemic inflammatory disease with its origins in the perinatal period. It is likely that genetic, environmental, and nutritional factors interact to induce excess production of pro-inflammatory cytokines that, in turn, damage fetal neurons leading to the adult onset of schizophrenia. Polyunsaturated fatty acids (PUFAs) and their metabolites such as lipoxins, resolvins, protectins, maresins and nitrolipids not only have potent neuroprotective action but also are capable of inhibiting the production of pro-inflammatory cytokines. Decreased formation of PUFAs as a result of low activity of Δ(6) and Δ(5) desaturases can result in an increase in the production of pro-inflammatory cytokines due to the absence of negative control exerted by PUFAs and their anti-inflammatory metabolites that, in turn, may predispose to neuronal damage and development of schizophrenia in adult life. Furthermore, PUFAs are essential for brain growth and development. If this proposal is correct, this implies that perinatal and adult supplementation of PUFAs not only prevents but also helps in the treatment of schizophrenia. Furthermore, synthetic analogs of lipoxins, resolvins, and protectins may be of significant benefit in schizophrenia.
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Affiliation(s)
- Undurti N Das
- UND Life Sciences, 13800 Fairhill Road, Shaker Heights, OH 44120, USA.
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Lim SN, Huang W, Hall JC, Michael-Titus AT, Priestley JV. Improved outcome after spinal cord compression injury in mice treated with docosahexaenoic acid. Exp Neurol 2013; 239:13-27. [DOI: 10.1016/j.expneurol.2012.09.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 12/20/2022]
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Hoffman WH, Shacka JJ, Andjelkovic AV. Autophagy in the brains of young patients with poorly controlled T1DM and fatal diabetic ketoacidosis. Exp Mol Pathol 2012; 93:273-80. [PMID: 22079479 PMCID: PMC5557498 DOI: 10.1016/j.yexmp.2011.10.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 10/14/2011] [Indexed: 02/07/2023]
Abstract
Semi-quantitative neuroradiologic studies, quantitative neuron density studies and immunocytochemistry markers of oxidative stress and neuroinflammation indicate neuronal injury and deficits in young patients with chronic poorly controlled type 1 diabetes mellitus (T1DM). Present data suggest that pathogenesis of the neuronal deficits in young patients, who die as the result of diabetic ketoacidosis (DKA) and brain edema (BE), does not involve apoptosis, a prominent form of regulated cell death in many disease states. To further address this we studied mediators of macroautophagy, endoplasmic reticulum (ER) stress and apoptosis. In all areas studied we demonstrated increased levels of macroautophagy-associated proteins including light chain-3 (LC3) and autophagy related protein-4 (Atg4), as well as increased levels of the ER-associated glucose-regulated protein78/binding immunoglobulin protein (GRP78/BiP) in T1DM. In contrast, cleaved caspase-3 was rarely detected in any T1DM brain regions. These results suggest that chronic metabolic instability and oxidative stress may cause alterations in the autophagy-lysosomal pathway but not apoptosis, and macroautophagy-associated molecules may serve as useful candidates for further study in the pathogenesis of early neuronal deficits in T1DM.
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Affiliation(s)
- William H Hoffman
- Department of Pediatrics, Section of Pediatric Endocrinology, Georgia Health Sciences University, Augusta, GA, USA.
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Arachidonic acid supplementation during gestational, lactational and post-weaning periods prevents retinal degeneration induced in a rodent model. Br J Nutr 2012; 109:1424-32. [DOI: 10.1017/s0007114512003327] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Fatty acids and their derivatives play a role in the response to retinal injury. The effects of dietary arachidonic acid (AA) supplementation on N-methyl-N-nitrosourea (MNU)-induced retinal degeneration was investigated in young Lewis rats during the gestational, lactational and post-weaning periods. Dams were fed 0·1, 0·5 or 2·0 % AA diets or a basal ( < 0·01 % AA) diet. On postnatal day 21 (at weaning), male pups received a single intraperitoneal injection of 50 mg MNU/kg or vehicle, and were fed the same diet as their mother for 7 d. Retinal apoptosis was analysed by the terminal deoxynucleotidyl transferase-mediated dUTP digoxigenin nick-end labelling (TUNEL) assay 24 h after the MNU treatment, and retinal morphology was examined 7 d post-MNU. Histologically, all rats that received MNU and were fed the basal and 0·1 % AA diets developed retinal degeneration characterised by the loss of photoreceptor cells (disappearance of the outer nuclear layer and the photoreceptor layer) in the central retina. The 0·5 and 2·0 % AA diets rescued rats from retinal damage. Morphometrically, in parallel with the AA dose (0·5 and 2·0 % AA), the photoreceptor ratio significantly increased and the retinal damage ratio decreased in the central retina, compared with the corresponding ratios in basal diet-fed rats. In parallel with the increase in serum and retinal AA levels and the AA:DHA ratio, the apoptotic index in the central retina was dose-dependently decreased in rats fed the 0·5 and 2·0 % AA diets. In conclusion, an AA-rich diet during the gestation, lactation and post-weaning periods rescued young Lewis rats from MNU-induced retinal degeneration via the inhibition of photoreceptor apoptosis. Therefore, an AA-enriched diet in the prenatal and postnatal periods may be an important strategy to suppress the degree of photoreceptor injury in humans.
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Pagès N, Maurois P, Delplanque B, Bac P, Vamecq J. Brain anticonvulsant protection of mice given chronic carbamazepine under various fatty acid and magnesium diet conditions. Prostaglandins Leukot Essent Fatty Acids 2012; 87:63-70. [PMID: 22749692 DOI: 10.1016/j.plefa.2012.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 05/24/2012] [Accepted: 06/05/2012] [Indexed: 12/29/2022]
Abstract
The anticonvulsant and mood stabilizer drug carbamazepine (CBZ) was evaluated for anti-seizure activity after drug pretreatment of young weaning mice given various oil-based diets. These diets had various mono-(MUFA) and poly-(PUFA) unsaturated fatty acid contents, were associated or not with magnesium deprivation, and were given over the entire experimental period (34 days). The diets included a commercial and three purified synthetic diets (n-6 PUFA, n-3 PUFA and MUFA-based chows containing 5% corn/sunflower oils 1:3, 5% rapeseed oil and 5% high oleic acid sunflower oil/sunflower oil 7:3, respectively). A 10-days CBZ treatment (50 mg/kg/day fragmented in two daily intraperitoneal injections of 25 mg/kg) was given 20 days after initiating diet administration and evaluations of mice was performed 4 days after arrest of CBZ in various seizure tests. In these conditions, CBZ pretreatment still exhibited anticonvulsant protection especially in magnesium-deficient animals. Ethosuximide (ESM)-like profiles under MUFA and n-3 PUFA diets and unusual GABA(A)ergic profile under n-6 PUFA diet in magnesium-deficiency dependent audiogenic seizures (MDDAS) test as well as protection against NMDA-induced seizures in all lipid (n-3 PUFA>MUFA and n-6 PUFA) diet conditions were observed in CBZ-pretreated mice. By highlighting ESM-like and anti-NMDA mechanisms previously induced by an n-3 PUFA diet, present CBZ anticonvulsant properties suggest brain protective targets common to CBZ and n-3 PUFAs.
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Bazan NG, Molina MF, Gordon WC. Docosahexaenoic acid signalolipidomics in nutrition: significance in aging, neuroinflammation, macular degeneration, Alzheimer's, and other neurodegenerative diseases. Annu Rev Nutr 2011; 31:321-51. [PMID: 21756134 DOI: 10.1146/annurev.nutr.012809.104635] [Citation(s) in RCA: 302] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Essential polyunsaturated fatty acids (PUFAs) are critical nutritional lipids that must be obtained from the diet to sustain homeostasis. Omega-3 and -6 PUFAs are key components of biomembranes and play important roles in cell integrity, development, maintenance, and function. The essential omega-3 fatty acid family member docosahexaenoic acid (DHA) is avidly retained and uniquely concentrated in the nervous system, particularly in photoreceptors and synaptic membranes. DHA plays a key role in vision, neuroprotection, successful aging, memory, and other functions. In addition, DHA displays anti-inflammatory and inflammatory resolving properties in contrast to the proinflammatory actions of several members of the omega-6 PUFAs family. This review discusses DHA signalolipidomics, comprising the cellular/tissue organization of DHA uptake, its distribution among cellular compartments, the organization and function of membrane domains rich in DHA-containing phospholipids, and the cellular and molecular events revealed by the uncovering of signaling pathways regulated by DHA and docosanoids, the DHA-derived bioactive lipids, which include neuroprotectin D1 (NPD1), a novel DHA-derived stereoselective mediator. NPD1 synthesis agonists include neurotrophins and oxidative stress; NPD1 elicits potent anti-inflammatory actions and prohomeostatic bioactivity, is anti-angiogenic, promotes corneal nerve regeneration, and induces cell survival. In the context of DHA signalolipidomics, this review highlights aging and the evolving studies on the significance of DHA in Alzheimer's disease, macular degeneration, Parkinson's disease, and other brain disorders. DHA signalolipidomics in the nervous system offers emerging targets for pharmaceutical intervention and clinical translation.
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Affiliation(s)
- Nicolas G Bazan
- Neuroscience Center of Excellence and Department of Ophthalmology, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
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Abstract
PURPOSE This article will summarize the current evidence on the effects of omega-3 fatty acids on prevention and treatment of mental illness. BACKGROUND Omega-3 fatty acids are involved in many physiologic processes. Since they cannot be made de novo in the body, they are considered essential nutrients. As the Western diet evolved, dietary intake of fatty acids has shifted to increased omega-6 fatty acids and decreased omega-3 fatty acids intake. These changes have been correlated with numerous differences in prevalence and course of mental illnesses. METHODS A MEDLINE search from 1966 to December 2010 was completed to identify studies comparing changes in symptoms, functioning, other outcomes, and/or side effects in patients treated with omega-3 fatty acids for mental illness. The studies were reviewed and reported by specific psychiatric disorder studied. CONCLUSIONS Omega-3 fatty acids play a role in many biologic functions. Epidemiologic data implicate omega-3 fatty acid deficiencies in many mental illnesses. Data are most robust for omega-3 fatty acids' role in affective disorders. However, data are conflicting, negative, or absent for most mental illnesses.
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Affiliation(s)
- Jessica L Gören
- Department of Pharmacy Practice, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA.
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Pages N, Maurois P, Delplanque B, Bac P, Martin JC, Du Q, Rapoport SI, Vamecq J. Brain protection by rapeseed oil in magnesium-deficient mice. Prostaglandins Leukot Essent Fatty Acids 2011; 85:53-60. [PMID: 21664114 PMCID: PMC5878863 DOI: 10.1016/j.plefa.2011.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2011] [Revised: 05/02/2011] [Accepted: 05/18/2011] [Indexed: 10/18/2022]
Abstract
Diets given for 30 days with various mono-(MUFA) and poly-(PUFA) unsaturated fatty acid contents were evaluated for brain protection in magnesium-deficient mice: a commercial and three synthetic diets (n-6PUFA, n-3PUFA and MUFA-based chows enriched with 5% corn/sunflower oils 1:3, with 5% rapeseed oil and with 5% high oleic acid sunflower oil/sunflower oil 7:3, respectively). Unlike magnesium deprivation, they induced significant differences in brain and erythrocyte membrane phospholipid fatty acid compositions. n-3PUFA but not other diets protected magnesium-deficient mice against hyperactivity and moderately towards maximal electroshock- and NMDA-induced seizures. This diet also inhibited audiogenic seizures by 50%, preventing animal deaths. Because, like n-6PUFA diet, matched control MUFA diet failed to induce brain protections, alpha-linolenate (ALA) rather than reduced n-6 PUFA diet content is concluded to cause n-3PUFA neuroprotection. Present in vivo data also corroborate literature in vitro inhibition of T type calcium channels by n-3 PUFA, adding basis to ALA supplementation in human anti-epileptic/neuroprotective strategies.
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Affiliation(s)
- Nicole Pages
- NMPA, CNPS, Paris XI University, Orsay, France
- Toxicology, Pharmacy, Strasbourg University, Illkirch, France
| | - Pierre Maurois
- Neuropharmacology Laboratory, Faculty of Pharmacy, Châtenay Malabry, France and U999 Inserm, IFR 141, Centre Chirurgical Marie Lannelongue, F-92350 Le Plessis Robinson, France
| | | | - Pierre Bac
- Neuropharmacology Laboratory, Faculty of Pharmacy, Châtenay Malabry, France and U999 Inserm, IFR 141, Centre Chirurgical Marie Lannelongue, F-92350 Le Plessis Robinson, France
| | | | - Qin Du
- Institut National de la Recherche Agronomique, UMR1260, Marseille, France
| | | | - Joseph Vamecq
- Inserm, Dept of Prof. Nicole Porchet, Center of Biology and Pathology Pierre Marie Degand, CHRU Lille, France
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Didonna A, Vaccari L, Bek A, Legname G. Infrared microspectroscopy: a multiple-screening platform for investigating single-cell biochemical perturbations upon prion infection. ACS Chem Neurosci 2011; 2:160-74. [PMID: 22778865 DOI: 10.1021/cn1000952] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Accepted: 12/08/2010] [Indexed: 12/15/2022] Open
Abstract
Prion diseases are a group of fatal neurodegenerative disorders characterized by the accumulation of prions in the central nervous system. The pathogenic prion (PrP(Sc)) possesses the capability to convert the host-encoded cellular isoform of the prion protein, PrP(C), into nascent PrP(Sc). The present work aims at providing novel insight into cellular response upon prion infection evidenced by synchrotron radiation infrared microspectroscopy (SR-IRMS). This non-invasive, label-free analytical technique was employed to investigate the biochemical perturbations undergone by prion infected mouse hypothalamic GT1-1 cells at the cellular and subcellular level. A decrement in total cellular protein content upon prion infection was identified by infrared (IR) whole-cell spectra and validated by bicinchoninic acid assay and single-cell volume analysis by atomic force microscopy (AFM). Hierarchical cluster analysis (HCA) of IR data discriminated between infected and uninfected cells and allowed to deduce an increment of lysosomal bodies within the cytoplasm of infected GT1-1 cells, a hypothesis further confirmed by SR-IRMS at subcellular spatial resolution and fluorescent microscopy. The purpose of this work, therefore, consists of proposing IRMS as a powerful multiscreening platform, drawing on the synergy with conventional biological assays and microscopy techniques in order to increase the accuracy of investigations performed at the single-cell level.
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Affiliation(s)
- Alessandro Didonna
- Laboratory of Prion Biology, Neurobiology Sector, Scuola Internazionale Superiore di Studi Avanzati (SISSA), via Bonomea 265, I-34136 Trieste, Italy
| | - Lisa Vaccari
- ELETTRA Synchrotron Light Laboratory, S.S. 14 Km. 163.5, 34149 Basovizza, Trieste, Italy
| | - Alpan Bek
- CBM S.c.r.l., Consorzio per il Centro di Biomedicina Molecolare—Center for Molecular Biomedicine, Area Science Park—Basovizza SS 14, Km 163.5, I-34149 Trieste (TS), Italy
| | - Giuseppe Legname
- Laboratory of Prion Biology, Neurobiology Sector, Scuola Internazionale Superiore di Studi Avanzati (SISSA), via Bonomea 265, I-34136 Trieste, Italy
- ELETTRA Synchrotron Light Laboratory, S.S. 14 Km. 163.5, 34149 Basovizza, Trieste, Italy
- CBM S.c.r.l., Consorzio per il Centro di Biomedicina Molecolare—Center for Molecular Biomedicine, Area Science Park—Basovizza SS 14, Km 163.5, I-34149 Trieste (TS), Italy
- Italian Institute of Technology, SISSA Unit, Via Bonomea 265, 34136 Trieste, Italy
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Brand A, Crawford MA, Yavin E. Retailoring docosahexaenoic acid-containing phospholipid species during impaired neurogenesis following omega-3 alpha-linolenic acid deprivation. J Neurochem 2010; 114:1393-404. [PMID: 20557429 DOI: 10.1111/j.1471-4159.2010.06866.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Diminished levels of docosahexaenoic acid (22:6n-3), the major fatty acid (FA) synthesized from alpha-linolenic acid (18:3n-3), have been implicated in functional impairment in the developing and adult brain. We have now examined the changes in phospholipid (PL) molecular species in the developing postnatal cortex, a region recently shown to be affected by a robust aberration in neuronal cell migration, after maternal diet alpha-linolenic acid deprivation (Yavin et al. (2009)Neuroscience162(4),1011). The frontal cortex PL composition of 1- to 4-week-old rats was analyzed by gas chromatography and electrospray ionization/tandem mass spectrometry. Changes in the cortical PL molecular species profile by dietary means appear very specific as 22:6n-3 was exclusively substituted by docosapentaenoic acid (22:5n-6). However, molecular species were conserved with respect to the combination of specific polar head groups (i.e. ethanolamine and serine) in sn-3 and defined saturated/mono-unsaturated FA in sn-1 position even when the sn-2 FA moiety underwent diet-induced changes. Our results suggest that substitution of docosahexaenoic acid by docosapentaenoic acid is tightly regulated presumably to maintain a proper biophysical characteristic of membrane PL molecular species. The importance of this conservation may underscore the possible biochemical consequences of this substitution in regulating certain functions in the developing brain.
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Affiliation(s)
- Annette Brand
- Institute of Brain Chemistry and Human Nutrition, London Metropolitan University, London, UK
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Hashimoto M, Katakura M, Hossain S, Rahman A, Shimada T, Shido O. Docosahexaenoic acid withstands the Aβ(25-35)-induced neurotoxicity in SH-SY5Y cells. J Nutr Biochem 2010; 22:22-9. [PMID: 20226652 DOI: 10.1016/j.jnutbio.2009.11.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2009] [Revised: 10/30/2009] [Accepted: 11/06/2009] [Indexed: 11/30/2022]
Abstract
BACKGROUND Docosahexaenoic acid (DHA, C22:6, n-3) ameliorates the memory-related learning deficits of Alzheimer's disease (AD), which is characterized by fibrillar amyloid deposits in the affected brains. Here, we have investigated whether DHA-induced inhibition of Amyloid β-peptide(25-35) (Aβ(25-35)) fibrillation limits or deteriorates the toxicity of the human neuroblastoma cells (SH-SY5Y). EXPERIMENTAL METHODS In vitro fibrillation of Aβ(25-35) was performed in the absence or presence of DHA. Afterwards, SH-SY5Y cells were incubated with Aβ(25-35) in absence or presence 20 μM DHA to evaluate its effect on the Aβ(25-35)-induced neurotoxicity by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)]-redox and TUNEL (TdT-mediated dUTP-biotin nick end-labeling) assay and immunohistochemistry. The level of Aβ(25-35)-induced lipid peroxide (LPO) was determined in the absence or presence of oligomer-specific antibody. Fatty acid profile was estimated by gas chromatography. RESULTS DHA significantly reduced the Aβ(25-35) in vitro fibrillation, as indicated by fluorospectroscopy and transmission electron microscopy. Aβ(25-35) decreased the MTT-redox activity and increased the apoptotic damage and levels of LPO when compared with those of the controls. However, when the SH-SY5Y cells were treated with Aβ(25-35) in the presence of DHA, MTT redox potential significantly increased and the levels LPO decreased, suggesting an inhibition of the Aβ(25-35)-induced neurotoxicity. DHA improved the Aβ(25-35) induced DNA damage and axodendritic loss, with a concomitant increase in the cellular level of DHA, suggesting DHA protects the cell from neurotoxic degeneration. CONCLUSION DHA not only inhibits the in vitro fibrillation but also resists the Aβ(25-35)-induced toxicity in the neuronal cells. This might be the basis of the DHA-induced amelioration of Aβ-induced neurodegeneration and related cognitive deficits.
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Affiliation(s)
- Michio Hashimoto
- Department of Environmental Physiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan.
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Schuchardt JP, Huss M, Stauss-Grabo M, Hahn A. Significance of long-chain polyunsaturated fatty acids (PUFAs) for the development and behaviour of children. Eur J Pediatr 2010; 169:149-64. [PMID: 19672626 DOI: 10.1007/s00431-009-1035-8] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Accepted: 07/20/2009] [Indexed: 02/05/2023]
Abstract
omega-6 and omega-3 polyunsaturated fatty acids (PUFAs) play a central role in the normal development and functioning of the brain and central nervous system. Long-chain PUFAs (LC-PUFAs) such as eicosapentaenoic acid (EPA, C20:5omega-3), docosahexaenoic acid (DHA, C22:6omega-3) and arachidonic acid (AA, C20:4omega-6), in particular, are involved in numerous neuronal processes, ranging from effects on membrane fluidity to gene expression regulation. Deficiencies and imbalances of these nutrients, not only during the developmental phase but throughout the whole life span, have significant effects on brain function. Numerous observational studies have shown a link between childhood developmental disorders and omega-6:omega-3 fatty acid imbalances. For instance, neurocognitive disorders such as attention-deficit hyperactivity disorder (ADHD), dyslexia, dyspraxia and autism spectrum disorders are often associated with a relative lack of omega-3 fatty acids. In addition to a high omega-6 fatty acid intake and, in many cases, an insufficient supply of omega-3 fatty acids among the population, evidence is increasing to suggest that PUFA metabolism can be impaired in individuals with ADHD. In this context, PUFA imbalances are being discussed as potential risk factors for neurodevelopmental disorders. Another focus is whether the nutritive PUFA requirements-especially long-chain omega-3 fatty acid requirements-are higher among some individuals. Meanwhile, several controlled studies investigated the clinical benefits of LC-PUFA supplementation in affected children and adolescents, with occasionally conflicting results.
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Affiliation(s)
- Jan Philipp Schuchardt
- Institute of Food Science, Nutrition physiology and human nutrition unit, Leibniz University of Hanover, Am Kleinen Felde 30, 30167 Hanover, Germany.
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Kim HY. Biochemical and biological functions of docosahexaenoic acid in the nervous system: modulation by ethanol. Chem Phys Lipids 2008; 153:34-46. [PMID: 18359292 PMCID: PMC2517421 DOI: 10.1016/j.chemphyslip.2008.02.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Docosahexaenoic acid (DHA, 22:6n-3), an n-3 fatty acid highly concentrated in the central nervous system, is essential for proper neuronal and retinal function. While a high level of DHA is generally maintained in neuronal membranes, inadequate supply of n-3 fatty acid or ethanol exposure leads to a significant loss of DHA in neuronal cells. The roles of DHA in neuronal signaling have been emerging. In this review, biological, biochemical and molecular mechanisms supporting the essential function of DHA in neuronal survival and development are described in relation to n-3 fatty acid depleting conditions.
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Affiliation(s)
- Hee-Yong Kim
- Laboratory of Molecular Signaling, NIAAA, NIH, 5625 Fishers Lane, Room 3N07, MSC9410, Bethesda, MD 20892-9410, USA.
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Ma D, Lu L, Boneva NB, Warashina S, Kaplamadzhiev DB, Mori Y, Nakaya MA, Kikuchi M, Tonchev AB, Okano H, Yamashima T. Expression of free fatty acid receptor GPR40 in the neurogenic niche of adult monkey hippocampus. Hippocampus 2008; 18:326-33. [DOI: 10.1002/hipo.20393] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Machová E, Málková B, Lisá V, Nováková J, Dolezal V. The increase of choline acetyltransferase activity by docosahexaenoic acid in NG108-15 cells grown in serum-free medium is independent of its effect on cell growth. Neurochem Res 2007; 31:1239-46. [PMID: 17004129 DOI: 10.1007/s11064-006-9156-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigated the influence of the polyunsaturated docosahexaenoic acid (22:6n-3; DHA) on the constitutive expression of choline acetyltransferase (ChAT) in native and induced expression in differentiated cholinergic cells NG108-15 grown in serum-free medium. Elimination of serum-derived trophic support resulted in growth arrest and a strong decrease of ChAT activity. In either conditions, DHA largely rescued general indicators of cell growth and function, and partially prevented the decrease of ChAT activity. However, the maximal effect on general cell state in native and differentiated cells, and ChAT activity in native cells, was reached at or below 10 mumol/l of DHA. In contrast, maximal induction of ChAT activity in differentiated cells required about six times higher concentrations of DHA. These data thus demonstrate stimulatory effect of DHA on ChAT activity that is independent of its general cell protective properties.
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Affiliation(s)
- Eva Machová
- Institute of Physiology CAS, Vídenská 1083, 14220, Prague 4, Czech Republic
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Notari L, Baladron V, Aroca-Aguilar JD, Balko N, Heredia R, Meyer C, Notario PM, Saravanamuthu S, Nueda ML, Sanchez-Sanchez F, Escribano J, Laborda J, Becerra SP. Identification of a lipase-linked cell membrane receptor for pigment epithelium-derived factor. J Biol Chem 2006; 281:38022-37. [PMID: 17032652 DOI: 10.1074/jbc.m600353200] [Citation(s) in RCA: 225] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Pigment epithelium-derived factor (PEDF) is an extracellular multifunctional protein belonging to the serpin superfamily with demonstrable neurotrophic, gliastatic, neuronotrophic, antiangiogenic, and antitumorigenic properties. We have previously provided biochemical evidence for high affinity PEDF-binding sites and proteins in plasma membranes of retina, retinoblastoma, and CNS cells. This study was designed to reveal a receptor involved in the biological activities of PEDF. Using a yeast two-hybrid screening, we identified a novel gene from pigment epithelium of the human retina that codes for a PEDF-binding partner, which we term PEDF-R. The derived polypeptide has putative transmembrane, intracellular and extracellular regions, and a phospholipase domain. Recently, PEDF-R (TTS-2.2/independent phospholipase A(2) (PLA(2))zeta and mouse desnutrin/ATGL) has been described in adipose cells as a member of the new calcium-independent PLA(2)/nutrin/patatin-like phospholipase domain-containing 2 (PNPLA2) family that possesses triglyceride lipase and acylglycerol transacylase activities. Here we describe the PEDF-R gene expression in the retina and its heterologous expression by bacterial and eukaryotic systems, and we demonstrate that its protein product has specific and high binding affinity for PEDF, has a potent phospholipase A(2) activity that liberates fatty acids, and is associated with eukaryotic cell membranes. Most importantly, PEDF binding stimulates the enzymatic phospholipase A(2) activity of PEDF-R. In conclusion, we have identified a novel PEDF-R gene in the retina for a phospholipase-linked membrane protein with high affinity for PEDF, suggesting a molecular pathway by which ligand/receptor interaction on the cell surface could generate a cellular signal.
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Affiliation(s)
- Luigi Notari
- National Eye Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
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Kishida E, Tajiri M, Masuzawa Y. Docosahexaenoic acid enrichment can reduce L929 cell necrosis induced by tumor necrosis factor. Biochim Biophys Acta Mol Cell Biol Lipids 2006; 1761:454-62. [PMID: 16698313 DOI: 10.1016/j.bbalip.2006.03.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2005] [Revised: 02/20/2006] [Accepted: 03/21/2006] [Indexed: 11/29/2022]
Abstract
We previously reported that docosahexaenoic acid (DHA) attenuated tumor necrosis factor (TNF)-induced apoptosis in human monocytic U937 cells (J. Nutr. 130: 1095-1101, 2000). In the present study, we examined the effects of DHA and other polyunsaturated fatty acids (PUFA) on TNF-induced necrosis, another mode of cell death, using L929 murine fibrosarcoma cells. After preincubation with PUFA conjugated with BSA for 24 h, cells were treated with TNF or TNF+actinomycin D (Act D). Preincubation of cells with DHA enriched this polyunsaturated acid in the phospholipids and attenuated cell death induced by either TNF or TNF+Act D. When cells were treated with TNF alone, DNA laddering was not detected, and cells were coincidently stained with both annexin V-FITC and propidium iodide, indicating that the death mode was necrotic. TNF+Act D predominantly induced necrosis, although concurrent apoptotic cell death was also observed in this case. Preincubation with oleic acid, linoleic acid or 20:3(n-3) did not affect TNF-induced necrosis. Conversely, supplementation with n-3 docosapentaenoic acid (DPAn-3) or eicosapentaenoic acid (EPA) reduced necrotic cell death, but to a lesser extent in comparison with DHA. Unlike the case of U937 cell apoptosis, arachidonic acid (AA) significantly attenuated L929 cell necrosis, and 20:3(n-6) or 22:4(n-6) showed similar or less activity, respectively. Statistical evaluation indicated that the order of effective PUFA activity was DHA>DPAn-3> or =EPA>AA approximately 20:3(n-6)> or =22:4(n-6). One step desaturation, C2 elongation or C2 cleavage within the n-6 or n-3 fatty acid group was probably very active in L929 cells, because AA, synthesized from 20:3(n-6) or 22:4(n-6), and C22 fatty acids, synthesized from AA or EPA, were preferentially retained in cellular phospholipids. These observations suggested that attenuation of TNF-induced necrosis by the supplementation of various C20 or C22 polyunsaturated fatty acids is mainly attributable to the enrichment of three kinds of polyunsaturated fatty acids, i.e., DHA, DPAn-3 or AA, in phospholipids. Among these fatty acids, DHA was the most effective in the reduction of L929 necrosis as observed in the case of U937 apoptosis. This suggests that DHA-enriched membranes can protect cell against TNF irrespective of death modes and that membranous DHA may abrogate the death signaling common to necrosis and apoptosis.
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Affiliation(s)
- Etsu Kishida
- Department of Life and Health Science, Hyogo University of Teacher Education, Yashiro, Hyogo 673-1494, Japan
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Joardar A, Sen AK, Das S. Docosahexaenoic acid facilitates cell maturation and β-adrenergic transmission in astrocytes. J Lipid Res 2006; 47:571-81. [PMID: 16352524 DOI: 10.1194/jlr.m500415-jlr200] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The effects of docosahexaenoic acid (DHA; 22:6 n-3), a major omega-3 PUFA in the mammalian brain, on the structure and function of astrocytes were studied using primary cultures from rat cerebra. Gas-liquid chromatography of methyl esters of FAs isolated from cultures exposed to individual FAs, namely, stearic acid, linoleic acid, arachidonic acid, and DHA, showed alterations in the lipid profiles of the membranes, with a preferential incorporation of the FA to which the cells were exposed. Immunofluorescence studies demonstrated that unlike treatment with other FAs, after which the astrocytes remained as immature radial forms, DHA-treated astrocytes showed distinct differentiation, having morphology comparable to those grown in normal serum-containing medium. Receptor binding studies to determine the concentration of various neurotransmitter receptors showed that DHA selectively increased the number of beta-adrenergic receptors (beta-ARs) compared with FA-untreated controls, suggesting a greater role of DHA on beta-AR expression in membranes. This was also reflected by an increase in downstream events of the beta-AR pathways, such as the induction of protein kinase A and glycogen turnover by isoproterenol (ISP), a beta-AR agonist in DHA-treated cells. Moreover, ISP completely transformed DHA-treated cells into mature astrocytes bearing long processes, as in cells grown under normal conditions. Together, our observations suggest that DHA plays a unique role in facilitating some of the vital functions of astrocytes in the developing brain.
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Affiliation(s)
- Anindita Joardar
- Neurobiology Division, Indian Institute of Chemical Biology, Jadavpur, Kolkata 700032, India
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Sovic A, Panzenboeck U, Wintersperger A, Kratzer I, Hammer A, Levak-Frank S, Frank S, Rader DJ, Malle E, Sattler W. Regulated expression of endothelial lipase by porcine brain capillary endothelial cells constituting the blood-brain barrier. J Neurochem 2005; 94:109-19. [PMID: 15953354 DOI: 10.1111/j.1471-4159.2005.03175.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Normal neurological function depends on a constant supply of polyunsaturated fatty acids to the brain. A considerable proportion of essential fatty acids originates from lipoprotein-associated lipids that undergo uptake and/or catabolism at the blood-brain barrier (BBB). This study aimed at identifying expression and regulation of endothelial lipase (EL) in brain capillary endothelial cells (BCEC), major constituents of the BBB. Our results revealed that BCEC are capable of EL synthesis and secretion. Overexpression of EL resulted in enhanced hydrolysis of extracellular high-density lipoprotein (HDL)-associated sn-2-labeled [(14)C]20 : 4 phosphatidylcholine. [(14)C]20 : 4 was recovered in cellular lipids, indicating re-uptake and intracellular re-esterification. To investigate local regulation of EL in the cerebrovasculature, BCEC were cultured in the presence of peroxisome-proliferator activated receptor (PPAR)- and liver X receptor (LXR)-agonists, known to regulate HDL levels. These experiments revealed that 24(S)OH-cholesterol (a LXR agonist), bezafibrate (a PPARalpha agonist), or pioglitazone (a PPARgamma agonist) resulted in down-regulation of EL mRNA and protein levels. Our findings implicate that EL could generate fatty acids at the BBB for transport to deeper regions of the brain as building blocks for membrane phospholipids. In addition PPAR and LXR agonists appear to contribute to HDL homeostasis at the BBB by regulating EL expression.
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Affiliation(s)
- Andrea Sovic
- Institute of Molecular Biology and Biochemistry, Centre of Molecular Medicine, Medical University Graz, Austria
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de Lau LML, Bornebroek M, Witteman JCM, Hofman A, Koudstaal PJ, Breteler MMB. Dietary fatty acids and the risk of Parkinson disease: The Rotterdam Study. Neurology 2005; 64:2040-5. [PMID: 15985568 DOI: 10.1212/01.wnl.0000166038.67153.9f] [Citation(s) in RCA: 165] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Unsaturated fatty acids are important constituents of neuronal cell membranes and have neuroprotective, antioxidant, and anti-inflammatory properties. OBJECTIVE To determine if a high intake of unsaturated fatty acids might be associated with a lower risk of Parkinson disease (PD). METHODS In the Rotterdam Study, a prospective population-based cohort study of people ages > or =55, the association between intake of unsaturated fatty acids and the risk of incident PD was evaluated among 5,289 subjects who were free of dementia and parkinsonism and underwent complete dietary assessment at baseline. PD was assessed through repeated in-person examination, and the cohort was continuously monitored by computer linkage to medical records. The data were analyzed using Cox proportional hazards regression models. RESULTS After a mean follow-up of 6.0 years, 51 participants with incident PD were identified. Intakes of total fat, monounsaturated fatty acids (MUFAs), and polyunsaturated fatty acids (PUFAs) were significantly associated with a lower risk of PD, with an adjusted hazard ratio per SD increase of energy-adjusted intake of 0.69 (95% CI 0.52 to 0.91) for total fat, of 0.68 (95% CI 0.50 to 0.94) for MUFAs, and 0.66 (95% CI 0.46 to 0.96) for PUFAs. No associations were found for dietary saturated fat, cholesterol, or trans-fat. CONCLUSION These findings suggest that high intake of unsaturated fatty acids might protect against Parkinson disease.
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Affiliation(s)
- L M L de Lau
- Department of Epidemiology and Biostatistics, Erasmus Medical Center, Rotterdam, The Netherlands
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Han X, Gross RW. Shotgun lipidomics: electrospray ionization mass spectrometric analysis and quantitation of cellular lipidomes directly from crude extracts of biological samples. MASS SPECTROMETRY REVIEWS 2005; 24:367-412. [PMID: 15389848 DOI: 10.1002/mas.20023] [Citation(s) in RCA: 876] [Impact Index Per Article: 46.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Lipidomics, after genomics and proteomics, is a newly and rapidly expanding research field that studies cellular lipidomes and the organizational hierarchy of lipid and protein constituents mediating life processes. Lipidomics is greatly facilitated by recent advances in, and novel applications of, electrospray ionization mass spectrometry (ESI/MS). In this review, we will focus on the advances in ESI/MS, which have facilitated the development of shotgun lipidomics and the utility of intrasource separation as an enabling strategy for utilization of 2D mass spectrometry in shotgun lipidomics of biological samples. The principles and experimental details of the intrasource separation approach will be extensively discussed. Other ESI/MS approaches towards the quantitative analyses of global cellular lipidomes directly from crude lipid extracts of biological samples will also be reviewed and compared. Multiple examples of lipidomic analyses from crude lipid extracts employing these approaches will be given to show the power of ESI/MS techniques in lipidomics. Currently, modern society is plagued by the sequelae of lipid-related diseases. It is our hope that the integration of these advances in multiple disciplines will catalyze the development of lipidomics, and such development will lead to improvements in diagnostics and therapeutics, which will ultimately result in the extended longevity and an improved quality of life for humankind.
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Affiliation(s)
- Xianlin Han
- Division of Bioorganic Chemistry and Molecular Pharmacology, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
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SanGiovanni JP, Chew EY. The role of omega-3 long-chain polyunsaturated fatty acids in health and disease of the retina. Prog Retin Eye Res 2005; 24:87-138. [PMID: 15555528 DOI: 10.1016/j.preteyeres.2004.06.002] [Citation(s) in RCA: 496] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In this work we advance the hypothesis that omega-3 (omega-3) long-chain polyunsaturated fatty acids (LCPUFAs) exhibit cytoprotective and cytotherapeutic actions contributing to a number of anti-angiogenic and neuroprotective mechanisms within the retina. omega-3 LCPUFAs may modulate metabolic processes and attenuate effects of environmental exposures that activate molecules implicated in pathogenesis of vasoproliferative and neurodegenerative retinal diseases. These processes and exposures include ischemia, chronic light exposure, oxidative stress, inflammation, cellular signaling mechanisms, and aging. A number of bioactive molecules within the retina affect, and are effected by such conditions. These molecules operate within complex systems and include compounds classified as eicosanoids, angiogenic factors, matrix metalloproteinases, reactive oxygen species, cyclic nucleotides, neurotransmitters and neuromodulators, pro-inflammatory and immunoregulatory cytokines, and inflammatory phospholipids. We discuss the relationship of LCPUFAs with these bioactivators and bioactive compounds in the context of three blinding retinal diseases of public health significance that exhibit both vascular and neural pathology. How is omega-3 LCPUFA status related to retinal structure and function? Docosahexaenoic acid (DHA), a major dietary omega-3 LCPUFA, is also a major structural lipid of retinal photoreceptor outer segment membranes. Biophysical and biochemical properties of DHA may affect photoreceptor membrane function by altering permeability, fluidity, thickness, and lipid phase properties. Tissue DHA status affects retinal cell signaling mechanisms involved in phototransduction. DHA may operate in signaling cascades to enhance activation of membrane-bound retinal proteins and may also be involved in rhodopsin regeneration. Tissue DHA insufficiency is associated with alterations in retinal function. Visual processing deficits have been ameliorated with DHA supplementation in some cases. What evidence exists to suggest that LCPUFAs modulate factors and processes implicated in diseases of the vascular and neural retina? Tissue status of LCPUFAs is modifiable by and dependent upon dietary intake. Certain LCPUFAs are selectively accreted and efficiently conserved within the neural retina. On the most basic level, omega-3 LCPUFAs influence retinal cell gene expression, cellular differentiation, and cellular survival. DHA activates a number of nuclear hormone receptors that operate as transcription factors for molecules that modulate reduction-oxidation-sensitive and proinflammatory genes; these include the peroxisome proliferator-activated receptor-alpha (PPAR-alpha) and the retinoid X receptor. In the case of PPAR-alpha, this action is thought to prevent endothelial cell dysfunction and vascular remodeling through inhibition of: vascular smooth muscle cell proliferation, inducible nitric oxide synthase production, interleukin-1 induced cyclooxygenase (COX)-2 production, and thrombin-induced endothelin 1 production. Research on model systems demonstrates that omega-3 LCPUFAs also have the capacity to affect production and activation of angiogenic growth factors, arachidonic acid (AA)-based vasoregulatory eicosanoids, and MMPs. Eicosapentaenoic acid (EPA), a substrate for DHA, is the parent fatty acid for a family of eicosanoids that have the potential to affect AA-derived eicosanoids implicated in abnormal retinal neovascularization, vascular permeability, and inflammation. EPA depresses vascular endothelial growth factor (VEGF)-specific tyrosine kinase receptor activation and expression. VEGF plays an essential role in induction of: endothelial cell migration and proliferation, microvascular permeability, endothelial cell release of metalloproteinases and interstitial collagenases, and endothelial cell tube formation. The mechanism of VEGF receptor down-regulation is believed to occur at the tyrosine kinase nuclear factor-kappa B (NFkappaB). NFkappaB is a nuclear transcription factor that up-regulates COX-2 expression, intracellular adhesion molecule, thrombin, and nitric oxide synthase. All four factors are associated with vascular instability. COX-2 drives conversion of AA to a number angiogenic and proinflammatory eicosanoids. Our general conclusion is that there is consistent evidence to suggest that omega-3 LCPUFAs may act in a protective role against ischemia-, light-, oxygen-, inflammatory-, and age-associated pathology of the vascular and neural retina.
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Affiliation(s)
- John Paul SanGiovanni
- Division of Epidemiology and Clinical Research, National Eye Insitute, National Institutes of Health, 31 Center Drive, Building 31, Room 6A52, MSC 2510, Bethesda, MD 20892-2510, USA.
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Lonergan PE, Martin DSD, Horrobin DF, Lynch MA. Neuroprotective actions of eicosapentaenoic acid on lipopolysaccharide-induced dysfunction in rat hippocampus. J Neurochem 2004; 91:20-9. [PMID: 15379883 DOI: 10.1111/j.1471-4159.2004.02689.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Eicosapentaenoic acid (EPA) protects hippocampus from age-related and irradiation-induced changes that lead to impairment in synaptic function; the evidence suggests that this is due to its anti-inflammatory effects, specifically preventing changes induced by the proinflammatory cytokine, interleukin-1beta (IL-1beta). In this study, we have investigated the possibility that EPA may prevent the effects of lipopolysaccharide (LPS) administration, which have been shown to lead to deterioration of synaptic function in rat hippocampus. The data indicate that treatment of hippocampal neurones with EPA abrogated the LPS-induced increases in phosphorylation of the mitogen-activated protein kinase, c-Jun N-terminal kinase (JNK), the transcription factor, c-Jun and the mitochondrial protein, Bcl-2. In parallel, we report that intraperitoneal administration of LPS to adult rats increases phosphorylation of JNK, c-Jun and Bcl-2 in hippocampal tissue and that these changes are coupled with increased IL-1beta concentration. Treatment of rats with EPA abrogates these effects and also blocks the LPS-induced impairment in long-term potentiation in perforant path-granule cell synapses that accompanies these changes. We propose that the neuroprotective effect of EPA may be dependent on its ability to inhibit the downstream consequences of JNK activation.
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Affiliation(s)
- Peter E Lonergan
- Trinity College Institute of Neuroscience, Department of Physiology, Trinity College, Dublin, Ireland
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Marszalek JR, Kitidis C, Dararutana A, Lodish HF. Acyl-CoA synthetase 2 overexpression enhances fatty acid internalization and neurite outgrowth. J Biol Chem 2004; 279:23882-91. [PMID: 15051725 DOI: 10.1074/jbc.m313460200] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
During neurodevelopment neurons increase phospholipid synthesis to generate additional plasma membrane that makes up the growing neurites. Compared with most cell types, neurons contain a high percentage of the polyunsaturated fatty acids (PUFAs) arachidonic acid (AA) and docosahexaenoic acid (DHA). By utilizing PC12 cell lines as a model neuronal cell line, we examined the internalization rate of AA, DHA, and non-essential oleic acid (OA), as well as their effects on neurite outgrowth. When wild type cells were differentiated, the rate of AA and DHA internalization increased 50% more than the rate of OA internalization. When media were supplemented with AA or DHA, the average neurite length was increased by approximately 40%, but supplementation with the same amount of OA had no effect. We also increased the levels of acyl-CoA synthetase-1 (ACS1) and ACS2 proteins to determine whether they contribute to PUFA internalization or neurite outgrowth. Overexpression of ACS1 increased the rate of OA internalization by 55%, and AA and DHA uptake was increased by 25%, but there was no significant change in neurite outgrowth. In ACS2-overexpressing cells, in contrast, the rate of OA internalization increased by 90%, AA by 115%, and DHA by 70%. The average aggregate neurite length in ACS2-overexpressing cells was increased by approximately 40% when the media were supplemented with PUFAs, but there was no change with OA supplementation. Taken together, these results support the hypotheses that ACSs are rate-limiting for fatty acid internalization and that ACS2 enhances neurite outgrowth by promoting PUFA internalization.
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Affiliation(s)
- Joseph R Marszalek
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA
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Abstract
A novel in vivo fatty acid method has been developed to quantify and image brain metabolism of nutritionally essential polyunsaturated fatty acids (PUFAs). In unanesthetized rodents, a radiolabeled PUFA is injected intravenously, and its rate of incorporation into brain phospholipids is determined by chemical analysis or quantitative autoradiography. Results indicate that about 5% of brain arachidonic acid (20:4 n-6) and of docosahexaenoic acid (22:6 n-3) acid are lost daily by metabolism and are replaced from dietary sources through the plasma. Calculated turnover rates of PUFAs in brain phospholipids, due to deesterification by phospholipase A(2) (PLA(2)) followed by reesterification, are very rapid, consistent with active roles of PUFAs in signal transduction and other processes. Turnover rates of arachidonate and docosahexaenoate are independent of each other and probably are regulated by independent sets of enzymes. Brain incorporation of radiolabeled arachidonate can be imaged in response to drugs that bind to receptors coupled to PLA(2) through G proteins, thus measuring PLA(2)-initiated signal transduction. The in vivo fatty method is being extended for human studies using positron emission tomography.
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Affiliation(s)
- Stanley I Rapoport
- National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892, USA
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Strokin M, Sergeeva M, Reiser G. Docosahexaenoic acid and arachidonic acid release in rat brain astrocytes is mediated by two separate isoforms of phospholipase A2 and is differently regulated by cyclic AMP and Ca2+. Br J Pharmacol 2003; 139:1014-22. [PMID: 12839876 PMCID: PMC1573920 DOI: 10.1038/sj.bjp.0705326] [Citation(s) in RCA: 171] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
1. Docosahexaenoic acid (DHA) and arachidonic acid (AA), polyunsaturated fatty acids (PUFAs), are important for central nervous system function during development and in various pathological states. Astrocytes are involved in the biosynthesis of PUFAs in neuronal tissue. Here, we investigated the mechanism of DHA and AA release in cultured rat brain astrocytes. 2. Primary astrocytes were cultured under standard conditions and prelabeled with [(14)C]DHA or with [(3)H]AA. Adenosine 5'-triphosphate (ATP) (20 micro M applied for 15 min), the P2Y receptor agonist, stimulates release of both DHA (289% of control) and AA (266% of control) from astrocytes. DHA release stimulated by ATP is mediated by Ca(2+)-independent phospholipase A(2) (iPLA(2)), since it is blocked by the selective iPLA(2) inhibitor 4-bromoenol lactone (BEL, 5 micro M) and is not affected either by removal of Ca(2+) from extracellular medium or by suppression of intracellular Ca(2+) release through PLC inhibitor (U73122, 5 micro M). 3. AA release, on the other hand, which is stimulated by ATP, is attributed to Ca(2+)-dependent cytosolic PLA(2) (cPLA(2)). AA release is abolished by U73122 and, by removal of extracellular Ca(2+), is insensitive to BEL and can be selectively suppressed by methyl arachidonyl fluorophosphonate (3 micro M), a general inhibitor of intracellular PLA(2) s. 4. Western blot analysis confirms the presence in rat brain astrocytes of 85 kDa cPLA(2) and 40 kDa protein reactive to iPLA(2) antibodies. 5. The influence of cAMP on regulation of PUFA release was investigated. Release of DHA is strongly amplified by the adenylyl cyclase activator forskolin (10 micro M), and by the protein kinase A (PKA) activator dibutyryl-cAMP (1 mM). In contrast, release of AA is not affected by forskolin or dibutyryl-cAMP, but is almost completely blocked by 2,3-dideoxyadenosine (20 micro M) and inhibited by 34% by H89 (10 micro M), inhibitors of adenylyl cyclase and PKA, respectively. 6. Other neuromediators, such as bradykinin, glutamate and thrombin, stimulate release of DHA and AA, which is comparable to the release stimulated by ATP. 7. Different sensitivities of iPLA(2) and cPLA(2) to Ca(2+) and cAMP reveal new pathways for the regulation of fatty acid release and reflect the significance of astrocytes in control of DHA and AA metabolism under normal and pathological conditions in brain.
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Affiliation(s)
- Mikhail Strokin
- Otto-von-Guericke-Universität Magdeburg, Medizinische Fakultät, Institut für Neurobiochemie, Leipziger Strasse 44, D-39120, Magdeburg, Germany
| | - Marina Sergeeva
- Otto-von-Guericke-Universität Magdeburg, Medizinische Fakultät, Institut für Neurobiochemie, Leipziger Strasse 44, D-39120, Magdeburg, Germany
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow, Russia
| | - Georg Reiser
- Otto-von-Guericke-Universität Magdeburg, Medizinische Fakultät, Institut für Neurobiochemie, Leipziger Strasse 44, D-39120, Magdeburg, Germany
- Author for correspondence:
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Abstract
We previously established that n-3 FA status in membrane phospholipids influences the biosynthesis and accumulation of PS in neuronal tissues. We also demonstrated that neuronal apoptosis under adverse conditions is prevented by DHA enrichment in a PS-dependent manner. In this study, we examined the effect of a structural analog of DHA, docosapentaenoic acid (22:5n-6, DPA), which accumulates in neuronal membranes during n-3 FA deficiency. We observed that enrichment of neuronal cells with DPA increased the total PS content in comparison to nonenriched control. However, the increase was significantly less than that observed in DHA-enriched cells, primarily due to the fact that the 18:0,22:5n-6 species was not accumulated as effectively as 18:0,22:6n-3 in PS. As was the case with DHA, DPA enrichment also protected against cell death induced by staurosporine treatment in Neuro 2A cells, but to a lesser extent. These data indicate that provision of DPA in place of DHA is sufficient neither for fully supporting PS accumulation nor for cell survival. The in vitro interaction between Raf-1 and membrane was affected not only by the PS content but also by the fatty acyl composition in PS. The reduction of PS concentration as well as the substitution of 18:0,22:6 with 16:0,18:1 in the liposome considerably reduced the interaction with Raf-1. These data suggest that depletion of DHA from neuronal tissues may have a compounding effect on Raf-1 translocation in growth factor signaling. The fact that DPA cannot fully support the protective role played by DHA may provide a basis for the adverse effect of n-3 FA deficiency on neuronal development and function.
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Affiliation(s)
- Hee-Yong Kim
- Section of Mass Spectrometry, Laboratory of Membrane Biochemistry and Biophysics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, Maryland 20852, USA.
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Champeil-Potokar G, Denis I, Goustard-Langelier B, Alessandri JM, Guesnet P, Lavialle M. Astrocytes in culture require docosahexaenoic acid to restore the n-3/n-6 polyunsaturated fatty acid balance in their membrane phospholipids. J Neurosci Res 2003; 75:96-106. [PMID: 14689452 DOI: 10.1002/jnr.10817] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Docosahexaenoic acid (DHA), the main n-3 polyunsaturated fatty acid (PUFA) in membranes, is particularly abundant in brain cells. Decreased cerebral concentrations of DHA, resulting from dietary n-3 deficiency, are associated with impaired cognitive function. Because the cellular causes of this impairment are still unknown, we need in vitro models that mimic the variations in n-3/n-6 PUFA seen in vivo. We have compared the PUFA profiles of hamster astrocytes cultured in medium supplemented with long-chain PUFA [DHA and/or arachidonic acid (AA)] with those of brain tissue from hamsters fed an n-6/n-3 PUFA-balanced diet or one lacking n-3 PUFA. Astrocytes were obtained from the brain cortex of newborn hamsters and cultured in minimum essential medium + 5% fetal calf serum (FCS) supplemented with DHA and/or AA for 10 days. The astrocytes cultured in medium + FCS had low n-3 PUFA contents, comparable to those of brain tissue from hamsters fed an n-3-deficient diet. We have shown that astrocytes grown in medium supplemented with DHA and/or AA, plus alpha-tocopherol to prevent lipid peroxidation, incorporated large amounts of these long-chain PUFA, so that the n-6/n-3 PUFA compositions of the phosphatidylethanolamine and phosphatidylcholine, the two main classes of membrane phospholipids, were greatly altered. Astrocytes cultured in medium plus DHA had a more physiological n-3 status, grew better, and retained their astrocyte phenotype. Thus astrocytes in culture are likely to be physiologically relevant only when provided with adequate DHA. This reliable method of altering membrane phospholipid composition promises to be useful for studying the influence of n-6/n-3 imbalance on astrocyte function.
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Affiliation(s)
- Gaëlle Champeil-Potokar
- Laboratoire de Nutrition et Sécurité Alimentaire, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
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