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Dolotov OV, Inozemtseva LS, Myasoedov NF, Grivennikov IA. Stress-Induced Depression and Alzheimer's Disease: Focus on Astrocytes. Int J Mol Sci 2022; 23:4999. [PMID: 35563389 PMCID: PMC9104432 DOI: 10.3390/ijms23094999] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/06/2023] Open
Abstract
Neurodegenerative diseases and depression are multifactorial disorders with a complex and poorly understood physiopathology. Astrocytes play a key role in the functioning of neurons in norm and pathology. Stress is an important factor for the development of brain disorders. Here, we review data on the effects of stress on astrocyte function and evidence of the involvement of astrocyte dysfunction in depression and Alzheimer's disease (AD). Stressful life events are an important risk factor for depression; meanwhile, depression is an important risk factor for AD. Clinical data indicate atrophic changes in the same areas of the brain, the hippocampus and prefrontal cortex (PFC), in both pathologies. These brain regions play a key role in regulating the stress response and are most vulnerable to the action of glucocorticoids. PFC astrocytes are critically involved in the development of depression. Stress alters astrocyte function and can result in pyroptotic death of not only neurons, but also astrocytes. BDNF-TrkB system not only plays a key role in depression and in normalizing the stress response, but also appears to be an important factor in the functioning of astrocytes. Astrocytes, being a target for stress and glucocorticoids, are a promising target for the treatment of stress-dependent depression and AD.
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Affiliation(s)
- Oleg V. Dolotov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 119234 Moscow, Russia
| | - Ludmila S. Inozemtseva
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
| | - Nikolay F. Myasoedov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
| | - Igor A. Grivennikov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
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Henkel AW, Mouihate A, Welzel O. Differential Release of Exocytosis Marker Dyes Indicates Stimulation-Dependent Regulation of Synaptic Activity. Front Neurosci 2019; 13:1047. [PMID: 31632237 PMCID: PMC6783566 DOI: 10.3389/fnins.2019.01047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 09/18/2019] [Indexed: 02/05/2023] Open
Abstract
There is a general consensus that synaptic vesicular release by a full collapse process is the primary machinery of synaptic transmission. However, competing view suggests that synaptic vesicular release operates via a kiss-and-run mechanism. By monitoring the release dynamics of a synaptic vesicular marker, FM1-43 from individual synapses in hippocampal neurons, we found evidence that the release of synaptic vesicle was delayed by several seconds after the start of field stimulation. This phenomenon was associated with modified opening kinetics of fusion pores. Detailed analysis revealed that some synapses were completely inactive for a few seconds after stimulation, despite immediate calcium influx. This delay in vesicular release was modulated by various stimulation protocols and different frequencies, indicating an activity-dependent regulation mechanism for neurotransmitter exocytosis. Staurosporine, a drug known to induce “kiss-and-run” exocytosis, increased the proportion of delayed synapses as well as the delay duration, while fluoxetine acted contrarily. Besides being a serotonin reuptake inhibitor, it directly enhanced vesicle mobilization and reduced synaptic fatigue. Exocytosis was never delayed, when it was monitored with pH-sensitive probes, synaptopHlourin and αSyt-CypHerE5 antibody, indicating an instantaneous formation of a fusion pore that allowed rapid equilibration of vesicular lumenal pH but prevented FM1-43 release because of its slow dissociation from the inner vesicular membrane. Our observations suggest that synapses operate via a sequential “kiss-and-run” and “full-collapse” exocytosis mechanism. The initially narrow vesicular pore allows the equilibration of intravesicular pH which then progresses toward full fusion, causing FM1-43 release.
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Affiliation(s)
- Andreas W Henkel
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Abdeslam Mouihate
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Oliver Welzel
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Erlangen, Germany
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Mouihate A, Kalakh S, AlMutairi R, Alashqar A. Prenatal Inflammation Dampens Neurogenesis and Enhances Serotonin Transporter Expression in the Hippocampus of Adult Female Rats. Med Princ Pract 2019; 28:352-360. [PMID: 30884483 PMCID: PMC6639577 DOI: 10.1159/000499658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 03/18/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND/AIMS Prenatal exposure to lipopolysaccharide (LPS) dampens hippocampal neurogenesis. This effect is associated with increased anxiety-like behavior in adult offspring. Furthermore, blocking serotonin transporters (SERT) promotes adult neurogenesis. Previous studies were performed largely in males. Therefore, we explored the impact of prenatal LPS on neurogenesis, SERT expression in the hippocampus, and anxiety-like behavior in female rats during prepubertal and adulthood stages. MATERIALS AND METHODS Timed pregnant rats were injected with either saline or LPS (100 µg/kg, i.p.) on gestational days 15, 17, and 19. Newly born neurons were monitored by immunohistochemistry, and anxiety-like behavior was monitored using the elevated plus maze and open-field test. SERT expression in the hippocampus was assessed by Western blot and immunofluorescence. RESULTS Prenatal LPS led to reduced hippocampal neurogenesis in adult but not in prepubertal female offspring. This reduced neurogenesis was associated with enhanced hippocampal expression of SERT protein. However, there was no significant impact of prenatal LPS on anxiety-like behavior. CONCLUSIONS Prenatal LPS-induced reduction in neurogenesis was dissociated from anxiety-like behavior in adult female rats. Furthermore, the long-lasting impact of prenatal LPS on neurogenesis in female offspring was age-dependent.
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Affiliation(s)
- Abdeslam Mouihate
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait,
| | - Samah Kalakh
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Rawan AlMutairi
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Abdelrahman Alashqar
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
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Sherkawy MM, Abo-Youssef AM, Salama AAA, Ismaiel IE. Fluoxetine protects against OVA induced bronchial asthma and depression in rats. Eur J Pharmacol 2018; 837:25-32. [PMID: 30145150 DOI: 10.1016/j.ejphar.2018.08.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
Abstract
Depression is very common in asthmatic patients and may increases risk for morbidity and mortality. The present work aimed to investigate the protective effect of fluoxetine, on behavioral and biochemical changes, associated with ovalbumin (OVA) - induced bronchial asthma and depression in rats. Rats were sensitized with intraperitoneal administration of OVA plus aluminum hydroxide for 3 consecutive days then at day 11 followed by OVA intranasal challenge at days 19, 20, 21. Rats were either pretreated with dexamethasone, fluoxetine10mg/kg or fluoxetine 20 mg/kg. At the end of the experiment, various tests were performed, including open field, forced swimming and respiratory function tests. Blood was drawn for serum IgE detection. Finally, rats were euthanized, brain-derived neurotrophic factor (BDNF) was estimated in bronchoalveolar lavage (BAL) fluid and lung content of reduced glutathione (GSH), superoxide dismutase (SOD), tumor necrosis factor-alpha (TNF-α) and interleukin 4 (IL-4) were determined. Histopathological study was also performed. The results showed that fluoxetine significantly ameliorated OVA- induced biochemical and behavioral changes. Fluoxetine may protect against OVA-induced asthma and depression in rats. This effect may be mediated at least in part by its antioxidant, anti-inflammatory and immunosuppressant effect.
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Affiliation(s)
- Marwa M Sherkawy
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| | - Amira M Abo-Youssef
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
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Tsybko AS, Ilchibaeva TV, Popova NK. Role of glial cell line-derived neurotrophic factor in the pathogenesis and treatment of mood disorders. Rev Neurosci 2017; 28:219-233. [DOI: 10.1515/revneuro-2016-0063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/03/2016] [Indexed: 12/31/2022]
Abstract
AbstractGlial cell line-derived neurotrophic factor (GDNF) is widely recognized as a survival factor for dopaminergic neurons, but GDNF has also been shown to promote development, differentiation, and protection of other central nervous system neurons and was thought to play an important role in various neuropsychiatric disorders. Severe mood disorders, such as primarily major depressive disorder and bipolar affective disorder, attract particular attention. These psychopathologies are characterized by structural alterations accompanied by the dysregulation of neuroprotective and neurotrophic signaling mechanisms required for the maturation, growth, and survival of neurons and glia. The main objective of this review is to summarize the recent findings and evaluate the potential role of GDNF in the pathogenesis and treatment of mood disorders. Specifically, it describes (1) the implication of GDNF in the mechanism of depression and in the effect of antidepressant drugs and mood stabilizers and (2) the interrelation between GDNF and brain neurotransmitters, playing a key role in the pathogenesis of depression. This review provides converging lines of evidence that (1) brain GDNF contributes to the mechanism underlying depressive disorders and the effect of antidepressants and mood stabilizers and (2) there is a cross-talk between GDNF and neurotransmitters representing a feedback system: GDNF-neurotransmitters and neurotransmitters-GDNF.
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Affiliation(s)
- Anton S. Tsybko
- 1Department of Behavioral Neurogenomics, The Federal Research Center the Institute of Cytology and Genetics SB RAS, Lavrentyeva av. 10, Novosibirsk 630090, Russia
| | - Tatiana V. Ilchibaeva
- 2Department of Behavioral Neurogenomics, The Federal Research Center the Institute of Cytology and Genetics SB RAS, Novosibirsk 633090, Russia
| | - Nina K. Popova
- 2Department of Behavioral Neurogenomics, The Federal Research Center the Institute of Cytology and Genetics SB RAS, Novosibirsk 633090, Russia
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Popova NK, Ilchibaeva TV, Naumenko VS. Neurotrophic factors (BDNF and GDNF) and the serotonergic system of the brain. BIOCHEMISTRY (MOSCOW) 2017; 82:308-317. [DOI: 10.1134/s0006297917030099] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Champeil-Potokar G, Hennebelle M, Latour A, Vancassel S, Denis I. Docosahexaenoic acid (DHA) prevents corticosterone-induced changes in astrocyte morphology and function. J Neurochem 2016; 136:1155-1167. [PMID: 26709611 DOI: 10.1111/jnc.13510] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 01/02/2023]
Abstract
The many functions of astrocytes, such as glutamate recycling and morphological plasticity, enable them to stabilize synapses environment and protect neurons. Little is known about how they adapt to glucocorticoid-induced stress, and even less about the influence of dietary factors. We previously showed that omega-3 polyunsaturated fatty acids (ω3PUFA), dietary fats which alleviate stress responses, influence the way astroglia regulate glutamatergic synapses. We have explored the role of docosahexaenoic acid (DHA), the main ω3PUFA, in the astroglial responses to corticosterone, the main stress hormone in rodents to determine whether ω3PUFA help astrocytes resist stress. Cultured rat astrocytes were enriched in DHA or arachidonic acid (AA, the main ω6PUFA) and given 100 nM corticosterone for several days. Corticosterone stimulated astrocyte glutamate recycling by increasing glutamate uptake and glutamine synthetase (GS), and altered the astrocyte cytoskeleton. DHA-enriched astrocytes no longer responded to the action of corticosterone on glutamate uptake, had decreased GS, and the cytoskeletal effect of corticosterone was delayed, while AA-enriched cells were unaffected. The DHA-dependent anti-corticosterone effect was related to fewer glucocorticoid receptors, while corticosterone increased DHA incorporation into astrocyte membranes. Thus, DHA helps astrocytes resist the influence of corticosterone, so perhaps promoting a sustainable response by the stressed brain. We show that corticosterone increases the glutamate recycling capacity of rat cortical astrocytes in culture, and alters their morphology, which may be detrimental in the long term. Increasing the membrane incorporation of docosahexaenoic acid (DHA), the main omega-3 in brain, reduces the amount of glucocorticoid receptors (GR) and prevents the effects of corticosterone. This may help the astrocytes maintain a functional phenotype in chronic stress situations.
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Affiliation(s)
| | - Marie Hennebelle
- Department of Food Science and Technology, University of California, Davis, CA, USA
| | - Alizée Latour
- INRA, Nutrition et Régulation Lipidique des Fonctions Cérébrales U0902 NURELICE, Jouy-en-Josas, France
| | - Sylvie Vancassel
- INRA, NutriNeurO UMR INRA 1286, Université Victor Segalen Bordeaux 2, Bordeaux Cedex, France
| | - Isabelle Denis
- INRA, Neurobiologie de l'Olfaction U1197 NBO, Domaine de Vilvert, Jouy-en-Josas, France
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