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Sequeira MK, Stachowicz KM, Seo EH, Yount ST, Gourley SL. Cocaine disrupts action flexibility via glucocorticoid receptors. iScience 2024; 27:110148. [PMID: 38989467 PMCID: PMC11233908 DOI: 10.1016/j.isci.2024.110148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 03/22/2024] [Accepted: 05/27/2024] [Indexed: 07/12/2024] Open
Abstract
Many addictive drugs increase stress hormone levels. They also alter the propensity of organisms to prospectively select actions based on long-term consequences. We hypothesized that cocaine causes inflexible action by increasing circulating stress hormone levels, activating the glucocorticoid receptor (GR). We trained mice to generate two nose pokes for food and then required them to update action-consequence associations when one response was no longer reinforced. Cocaine delivered in adolescence or adulthood impaired the capacity of mice to update action strategies, and inhibiting CORT synthesis rescued action flexibility. Next, we reduced Nr3c1, encoding GR, in the orbitofrontal cortex (OFC), a region of the brain responsible for interlacing new information into established routines. Nr3c1 silencing preserved action flexibility and dendritic spine abundance on excitatory neurons, despite cocaine. Spines are often considered substrates for learning and memory, leading to the discovery that cocaine degrades the representation of new action memories, obstructing action flexibility.
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Affiliation(s)
- Michelle K. Sequeira
- Graduate Program in Neuroscience, Emory University, Atlanta, GA, USA
- Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Departments of Pediatrics and Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Kathryn M. Stachowicz
- Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Departments of Pediatrics and Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Esther H. Seo
- Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Departments of Pediatrics and Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Sophie T. Yount
- Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Departments of Pediatrics and Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA
- Graduate Program in Molecular and Systems Pharmacology, Emory University, Atlanta, GA, USA
| | - Shannon L. Gourley
- Graduate Program in Neuroscience, Emory University, Atlanta, GA, USA
- Emory National Primate Research Center, Emory University, Atlanta, GA, USA
- Departments of Pediatrics and Psychiatry and Behavioral Sciences, Emory University School of Medicine, Emory University, Atlanta, GA, USA
- Graduate Program in Molecular and Systems Pharmacology, Emory University, Atlanta, GA, USA
- Children’s Healthcare of Atlanta, Atlanta, GA, USA
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Tsimpolis A, Kalafatakis K, Charalampopoulos I. Recent advances in the crosstalk between the brain-derived neurotrophic factor and glucocorticoids. Front Endocrinol (Lausanne) 2024; 15:1362573. [PMID: 38645426 PMCID: PMC11027069 DOI: 10.3389/fendo.2024.1362573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 03/25/2024] [Indexed: 04/23/2024] Open
Abstract
Brain-derived neurotrophic factor (BDNF), a key neurotrophin within the brain, by selectively activating the TrkB receptor, exerts multimodal effects on neurodevelopment, synaptic plasticity, cellular integrity and neural network dynamics. In parallel, glucocorticoids (GCs), vital steroid hormones, which are secreted by adrenal glands and rapidly diffused across the mammalian body (including the brain), activate two different groups of intracellular receptors, the mineralocorticoid and the glucocorticoid receptors, modulating a wide range of genomic, epigenomic and postgenomic events, also expressed in the neural tissue and implicated in neurodevelopment, synaptic plasticity, cellular homeostasis, cognitive and emotional processing. Recent research evidences indicate that these two major regulatory systems interact at various levels: they share common intracellular downstream pathways, GCs differentially regulate BDNF expression, under certain conditions BDNF antagonises the GC-induced effects on long-term potentiation, neuritic outgrowth and cellular death, while GCs regulate the intraneuronal transportation and the lysosomal degradation of BDNF. Currently, the BDNF-GC crosstalk features have been mainly studied in neurons, although initial findings show that this crosstalk could be equally important for other brain cell types, such as astrocytes. Elucidating the precise neurobiological significance of BDNF-GC interactions in a tempospatial manner, is crucial for understanding the subtleties of brain function and dysfunction, with implications for neurodegenerative and neuroinflammatory diseases, mood disorders and cognitive enhancement strategies.
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Affiliation(s)
- Alexandros Tsimpolis
- Department of Pharmacology, Medical School, University of Crete, Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas (IMBB-FORTH), Heraklion, Greece
| | - Konstantinos Kalafatakis
- Department of Pharmacology, Medical School, University of Crete, Heraklion, Greece
- Faculty of Medicine and Dentistry (Malta Campus), Queen Mary University of London, Victoria, Malta
| | - Ioannis Charalampopoulos
- Department of Pharmacology, Medical School, University of Crete, Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas (IMBB-FORTH), Heraklion, Greece
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Palamarchuk IS, Slavich GM, Vaillancourt T, Rajji TK. Stress-related cellular pathophysiology as a crosstalk risk factor for neurocognitive and psychiatric disorders. BMC Neurosci 2023; 24:65. [PMID: 38087196 PMCID: PMC10714507 DOI: 10.1186/s12868-023-00831-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/24/2023] [Indexed: 12/18/2023] Open
Abstract
In this narrative review, we examine biological processes linking psychological stress and cognition, with a focus on how psychological stress can activate multiple neurobiological mechanisms that drive cognitive decline and behavioral change. First, we describe the general neurobiology of the stress response to define neurocognitive stress reactivity. Second, we review aspects of epigenetic regulation, synaptic transmission, sex hormones, photoperiodic plasticity, and psychoneuroimmunological processes that can contribute to cognitive decline and neuropsychiatric conditions. Third, we explain mechanistic processes linking the stress response and neuropathology. Fourth, we discuss molecular nuances such as an interplay between kinases and proteins, as well as differential role of sex hormones, that can increase vulnerability to cognitive and emotional dysregulation following stress. Finally, we explicate several testable hypotheses for stress, neurocognitive, and neuropsychiatric research. Together, this work highlights how stress processes alter neurophysiology on multiple levels to increase individuals' risk for neurocognitive and psychiatric disorders, and points toward novel therapeutic targets for mitigating these effects. The resulting models can thus advance dementia and mental health research, and translational neuroscience, with an eye toward clinical application in cognitive and behavioral neurology, and psychiatry.
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Affiliation(s)
- Iryna S Palamarchuk
- Centre for Addiction and Mental Health, 1001 Queen Street West, Toronto, ON, M6J1H4, Canada.
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
- Sunnybrook Health Sciences Centre, Division of Neurology, Toronto, ON, Canada.
- Temerty Faculty of Medicine, Toronto Dementia Research Alliance, University of Toronto, Toronto, ON, Canada.
| | - George M Slavich
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, Los Angeles, CA, USA
| | - Tracy Vaillancourt
- Counselling Psychology, Faculty of Education, University of Ottawa, Ottawa, ON, Canada
- School of Psychology, Faculty of Social Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Tarek K Rajji
- Centre for Addiction and Mental Health, 1001 Queen Street West, Toronto, ON, M6J1H4, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Temerty Faculty of Medicine, Toronto Dementia Research Alliance, University of Toronto, Toronto, ON, Canada
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Zhu A, Zhong X, Zhu Y, Li P, Zhang J, Hou Y, Song L. Ratanasampil is more effective than flunarizine in relieving migraine. Int J Neurosci 2023; 133:1326-1337. [PMID: 35583486 DOI: 10.1080/00207454.2022.2079503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 05/12/2022] [Indexed: 10/18/2022]
Abstract
Aims: Migraine is a common neurological disorder with high incidence in population. This study aimed to investigate the therapeutic efficacy of Tibetan medicine Ratanasampil (RNSP) and to identify the serum biomarkers for diagnosis and response assessment.Materials and methods: We prospectively recruited 108 migraine patients living at high altitude (2,260 m), including 40 patients for RNSP group, 40 patients for flunarizine (FLZ) group, and 28 patients for placebo group. Serum levels of 5-hydroxytryptamine (5-HT), brain-derived neurotrophic factor (BDNF), calcitonin gene related peptide (CGRP), nerve growth factor (NGF) and β-endorphin (β-EP) before and after therapy were measured.Results: In comparison with placebo, both FLZ and RNSP significantly reduced the migraine days, HIT-6 score and verbal rating scale, headache intensity, duration, accompanying symptoms and headache score in four and eight weeks treatment. RNSP showed no significant difference to FLZ in the above parameters after four weeks treatment, but showed significantly better relief after eight weeks treatment. The overall effective rate of RNSP (92.5%) was also significantly higher than FLZ (74.4%, p < 0.05), mainly due to significantly higher ratio of patients with full recovery. The serum levels of biomarkers, including 5-HT, BDNF, NGF and β-EP, significantly elevated after eight weeks of treatment with RNSP, whereas the level of CGRP significantly decreased. The serum level of 5-HT exhibited significantly bigger percentage changes than other markers.Conclusion: In conclusion, RNSP was more effective than FLZ in relieving migraine after eight weeks continuous treatment. Serum 5-HT, BDNF, CGRP, NGF and β-EP were effective markers reflecting the response to RNSP and FLZ therapy.
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Affiliation(s)
- Aiqin Zhu
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
| | - Xing Zhong
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
| | - Yi Zhu
- Hospital Infection Management Office, Hospital of Xinjiang Production and Construction Corps, Urumqi, Xinjiang, China
| | - Peng Li
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
- Department of Clinical Medicine, Medical School of Qinghai University, Xining, China
| | - Junxia Zhang
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
| | - Yonglan Hou
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
| | - Lele Song
- Institution of Geriatric, Qinghai Provincial People's Hospital, Xining, China
- Department of Radiotherapy, the 8th Medical Center of the Chinese PLA General Hospital, Beijing, China
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Mazaira GI, Erlejman AG, Zgajnar NR, Piwien-Pilipuk G, Galigniana MD. The transportosome system as a model for the retrotransport of soluble proteins. Mol Cell Endocrinol 2023; 577:112047. [PMID: 37604241 DOI: 10.1016/j.mce.2023.112047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
The classic model of action of the glucocorticoid receptor (GR) sustains that its associated heat-shock protein of 90-kDa (HSP90) favours the cytoplasmic retention of the unliganded GR, whereas the binding of steroid triggers the dissociation of HSP90 allowing the passive nuclear accumulation of GR. In recent years, it was described a molecular machinery called transportosome that is responsible for the active retrograde transport of GR. The transportosome heterocomplex includes a dimer of HSP90, the stabilizer co-chaperone p23, and FKBP52 (FK506-binding protein of 52-kDa), an immunophilin that binds dynein/dynactin motor proteins. The model shows that upon steroid binding, FKBP52 is recruited to the GR allowing its active retrograde transport on cytoskeletal tracks. Then, the entire GR heterocomplex translocates through the nuclear pore complex. The HSP90-based heterocomplex is released in the nucleoplasm followed by receptor dimerization. Subsequent findings demonstrated that the transportosome is also responsible for the retrotransport of other soluble proteins. Importantly, the disruption of this molecular oligomer leads to several diseases. In this article, we discuss the relevance of this transport machinery in health and disease.
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Affiliation(s)
- Gisela I Mazaira
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Química Biológica de la, Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, 1428, Argentina
| | - Alejandra G Erlejman
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Química Biológica de la, Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, 1428, Argentina
| | - Nadia R Zgajnar
- Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, 1428, Argentina
| | | | - Mario D Galigniana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Instituto de Biología y Medicina Experimental, CONICET, Buenos Aires, 1428, Argentina.
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Jeanneteau F. Fast signaling by glucocorticoids shapes neural representations of behaviors. Steroids 2023; 199:109294. [PMID: 37549777 DOI: 10.1016/j.steroids.2023.109294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
Glucocorticoids are stress hormones that play central roles in the immediate and slower adaptive responses of the brain and body to new behavioral experience. The exact mechanisms by which the rapid and slow processes underlying glucocorticoid mnemonic effects unfold are under intensive scrutiny. It is possible that glucocorticoids rapidly modify memory representations in the brain by interfering with synaptic functions between inhibitory and excitatory neurons in a timing and context dependent manner. In particular, activity-dependent trans-synaptic messengers appear to have all the necessary attributes to engage in the rapid signaling by glucocorticoids and regulate the brain and behaviors. Novel frameworks for the treatment of stress-related disorders could emerge from a better characterization of the dynamic interplay between the rapid and slow signaling components by glucocorticoids on large-scale brain networks. Here I present some of the exact factors that could help reach this objective.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle , Université de Montpellier, INSERM, CNRS, 141 rue de la Cardonille, 34090, Montpellier, France.
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Corrone M, Nanev A, Amato I, Bicknell R, Piantella S, Maruff P, van den Buuse M, Wright BJ. The brain-derived neurotrophic factor Val66met polymorphism is associated with better attention and working memory performance and resilience to mild chronic stress. Eur J Neurosci 2023; 58:3903-3916. [PMID: 37740693 DOI: 10.1111/ejn.16153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/07/2023] [Accepted: 09/10/2023] [Indexed: 09/25/2023]
Abstract
The val66met polymorphism of the brain-derived neurotrophic factor (BDNF) gene has been identified as a potential moderator for the relationship between chronic stress and executive functioning. However, whether the presence of the met allele increases cognitive vulnerability or resilience to stress has yet to be determined. Given the established effects of autonomic activity and psychological arousal on executive functioning, in the present study, 56 healthy university students completed self-report measures of chronic stress, positive arousal (vigour) and negative arousal (anxiety) and measured heart-rate variability to quantify autonomic activity. Participants then completed a cognitive test battery that measured attention, decision-making, visual learning and working memory. Regression analyses demonstrated that Val/met participants performed better on attention and working memory tasks than Val/val participants, but no differences were seen in decision-making and visual learning. Further, Val/met participants were protected from stress-related differences in attention seen in Val/val participants. Val66met was not associated with physiological or psychological arousal. This study demonstrates that val66met plays an important but selective role in cognitive performance.
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Affiliation(s)
- Michelle Corrone
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Aleshia Nanev
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Isabella Amato
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Rowena Bicknell
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Stefan Piantella
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Paul Maruff
- Cogstate Ltd, Melbourne, Victoria, Australia
| | - Maarten van den Buuse
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Bradley J Wright
- School of Psychology and Public Health, La Trobe University, Melbourne, Victoria, Australia
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Jeanneteau F. Stress and the risk of Alzheimer dementia: Can deconstructed engrams be rebuilt? J Neuroendocrinol 2023; 35:e13235. [PMID: 36775895 DOI: 10.1111/jne.13235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023]
Abstract
The exact neuropathological mechanism by which the dementia process unfolds is under intense scrutiny. The disease affects about 38 million people worldwide, 70% of which are clinically diagnosed with Alzheimer's disease (AD). If the destruction of synapses essential for learning, planning and decision-making is part of the problem, must the restoration of previously lost synapses be part of the solution? It is plausible that neuronal capacity to restitute information corresponds with the adaptive capacity of its connectivity reserve. A challenge will be to promote the functional connectivity that can compensate for the lost one. This will require better clarification of the remodeling of functional connectivity during the progression of AD dementia and its reversal upon experimental treatment. A major difficulty is to promote the neural pathways that are atrophied in AD dementia while suppressing others that are bolstered. Therapeutic strategies should aim at scaling functional connectivity to a just balance between the atrophic and hypertrophic systems. However, the exact factors that can help reach this objective are still unclear. Similarities between the effects of chronic stress and some neuropathological mechanisms underlying AD dementia support the idea that common components deserve prime attention as therapeutic targets.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle, Université de Montpellier, INSERM, CNRS, Montpellier, France
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Serra MP, Sanna F, Boi M, Trucas M, Fernández-Teruel A, Corda MG, Giorgi O, Quartu M. Effects of Tail Pinch on BDNF and trkB Expression in the Hippocampus of Roman Low- (RLA) and High-Avoidance (RHA) Rats. Int J Mol Sci 2023; 24:ijms24119498. [PMID: 37298449 DOI: 10.3390/ijms24119498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
In this article, we describe the effects of tail pinch (TP), a mild acute stressor, on the levels of brain-derived neurotrophic factor (BDNF) and its tyrosine kinase receptor B (trkB) proteins in the hippocampus (HC) of the outbred Roman High- (RHA) and Low-Avoidance (RLA) rats, one of the most validated genetic models for the study of fear/anxiety- and stress-related behaviors. Using Western blot (WB) and immunohistochemistry assays, we show for the first time that TP induces distinct changes in the levels of BDNF and trkB proteins in the dorsal (dHC) and ventral (vHC) HC of RHA and RLA rats. The WB assays showed that TP increases BDNF and trkB levels in the dHC of both lines but induces opposite changes in the vHC, decreasing BDNF levels in RHA rats and trkB levels in RLA rats. These results suggest that TP may enhance plastic events in the dHC and hinder them in the vHC. Immunohistochemical assays, carried out in parallel to assess the location of changes revealed by the WB, showed that, in the dHC, TP increases BDNF-like immunoreactivity (LI) in the CA2 sector of the Ammon's horn of both Roman lines and in the CA3 sector of the Ammon's horn of RLA rats while, in the dentate gyrus (DG), TP increases trkB-LI in RHA rats. In contrast, in the vHC, TP elicits only a few changes, represented by decreases of BDNF- and trkB-LI in the CA1 sector of the Ammon's horn of RHA rats. These results support the view that the genotypic/phenotypic features of the experimental subjects influence the effects of an acute stressor, even as mild as TP, on the basal BDNF/trkB signaling, leading to different changes in the dorsal and ventral subdivisions of the HC.
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Affiliation(s)
- Maria Pina Serra
- Department of Biomedical Sciences, Section of Cytomorphology, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Francesco Sanna
- Department of Life and Environmental Sciences, Section of Pharmaceutical, Pharmacological and Nutraceutical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, CA, Italy
| | - Marianna Boi
- Department of Biomedical Sciences, Section of Cytomorphology, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Marcello Trucas
- Department of Biomedical Sciences, Section of Cytomorphology, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
| | - Alberto Fernández-Teruel
- Medical Psychology Unit, Department of Psychiatry and Legal Medicine, Institute of Neuroscience, School of Medicine, Autonomous University of Barcelona, 08193 Barcelona, Spain
| | - Maria Giuseppa Corda
- Department of Life and Environmental Sciences, Section of Pharmaceutical, Pharmacological and Nutraceutical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, CA, Italy
| | - Osvaldo Giorgi
- Department of Life and Environmental Sciences, Section of Pharmaceutical, Pharmacological and Nutraceutical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, CA, Italy
| | - Marina Quartu
- Department of Biomedical Sciences, Section of Cytomorphology, University of Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy
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Malekpour M, Jafari A, Kashkooli M, Salarikia SR, Negahdaripour M. A systems biology approach for discovering the cellular and molecular aspects of psychogenic non-epileptic seizure. Front Psychiatry 2023; 14:1116892. [PMID: 37252132 PMCID: PMC10213457 DOI: 10.3389/fpsyt.2023.1116892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/26/2023] [Indexed: 05/31/2023] Open
Abstract
Objectives Psychogenic non-epileptic seizure (PNES) is the most common non-epileptic disorder in patients referring to epilepsy centers. Contrary to common beliefs about the disease's harmlessness, the death rate of PNES patients is similar to drug-resistant epilepsy. Meanwhile, the molecular pathomechanism of PNES is unknown with very limited related research. Thus, the aim of this in silico study was to find different proteins and hormones associated with PNES via a systems biology approach. Methods Different bioinformatics databases and literature review were used to find proteins associated with PNES. The protein-hormone interaction network of PNES was constructed to discover its most influential compartments. The pathways associated with PNES pathomechanism were found by enrichment analysis of the identified proteins. Besides, the relationship between PNES-related molecules and psychiatric diseases was discovered, and the brain regions that could express altered levels of blood proteins were discovered. Results Eight genes and three hormones were found associated with PNES through the review process. Proopiomelanocortin (POMC), neuropeptide Y (NPY), cortisol, norepinephrine, and brain-derived neurotrophic factor (BDNF) were identified to have a high impact on the disease pathogenesis network. Moreover, activation of Janus kinase-signaling transducer and activator of transcription (JAK-STAT) and JAK, as well as signaling of growth hormone receptor, phosphatidylinositol 3-kinase /protein kinase B (PI3K/AKT), and neurotrophin were found associated with PNES molecular mechanism. Several psychiatric diseases such as depression, schizophrenia, and alcohol-related disorders were shown to be associated with PNES predominantly through signaling molecules. Significance This study was the first to gather the biochemicals associated with PNES. Multiple components and pathways and several psychiatric diseases associated with PNES, and some brain regions that could be altered during PNES were suggested, which should be confirmed in further studies. Altogether, these findings could be used in future molecular research on PNES patients.
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Affiliation(s)
- Mahdi Malekpour
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aida Jafari
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Kashkooli
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Manica Negahdaripour
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Science, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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Jeanneteau F, Meijer OC, Moisan MP. Structural basis of glucocorticoid receptor signaling bias. J Neuroendocrinol 2023; 35:e13203. [PMID: 36221223 DOI: 10.1111/jne.13203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 09/15/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022]
Abstract
Dissociation between the healthy and toxic effects of cortisol, a major stress-responding hormone has been a widely used strategy to develop anti-inflammatory glucocorticoids with fewer side effects. Such strategy falls short when treating brain disorders as timing and activity state within large-scale neuronal networks determine the physiological and behavioral specificity of cortisol response. Advances in structural molecular dynamics posit the bases for engineering glucocorticoids with precision bias for select downstream signaling pathways. Design of allosteric and/or cooperative control for the glucocorticoid receptor could help promote the beneficial and reduce the deleterious effects of cortisol on brain and behavior in disease conditions.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de génomique fonctionnelle, Université de Montpellier, INSERM, CNRS, Montpellier, France
| | - Onno C Meijer
- Leiden University Medical Center, Leiden, The Netherlands
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12
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Fries GR, Saldana VA, Finnstein J, Rein T. Molecular pathways of major depressive disorder converge on the synapse. Mol Psychiatry 2023; 28:284-297. [PMID: 36203007 PMCID: PMC9540059 DOI: 10.1038/s41380-022-01806-1] [Citation(s) in RCA: 128] [Impact Index Per Article: 128.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 01/07/2023]
Abstract
Major depressive disorder (MDD) is a psychiatric disease of still poorly understood molecular etiology. Extensive studies at different molecular levels point to a high complexity of numerous interrelated pathways as the underpinnings of depression. Major systems under consideration include monoamines, stress, neurotrophins and neurogenesis, excitatory and inhibitory neurotransmission, mitochondrial dysfunction, (epi)genetics, inflammation, the opioid system, myelination, and the gut-brain axis, among others. This review aims at illustrating how these multiple signaling pathways and systems may interact to provide a more comprehensive view of MDD's neurobiology. In particular, considering the pattern of synaptic activity as the closest physical representation of mood, emotion, and conscience we can conceptualize, each pathway or molecular system will be scrutinized for links to synaptic neurotransmission. Models of the neurobiology of MDD will be discussed as well as future actions to improve the understanding of the disease and treatment options.
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Affiliation(s)
- Gabriel R. Fries
- grid.267308.80000 0000 9206 2401Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, 1941 East Rd, Houston, TX 77054 USA ,grid.240145.60000 0001 2291 4776Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, 6767 Bertner Ave, Houston, TX 77030 USA
| | - Valeria A. Saldana
- grid.262285.90000 0000 8800 2297Frank H. Netter MD School of Medicine at Quinnipiac University, 370 Bassett Road, North Haven, CT 06473 USA
| | - Johannes Finnstein
- grid.419548.50000 0000 9497 5095Department of Translational Research in Psychiatry, Project Group Molecular Pathways of Depression, Max Planck Institute of Psychiatry, Kraepelinstr. 10, 80804 Munich, Germany
| | - Theo Rein
- Department of Translational Research in Psychiatry, Project Group Molecular Pathways of Depression, Max Planck Institute of Psychiatry, Kraepelinstr. 10, 80804, Munich, Germany.
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13
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Ahmadimanesh M, Etemad L, Morshedi Rad D, Ghahremani MH, Mohammadpour AH, Jafarzadeh Esfehani R, Jowsey P, Behdani F, Moallem SA, Abbaszadegan MR. Effect of citalopram and sertraline on the expression of miRNA- 124, 132, and 16 and their protein targets in patients with depression. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2023; 26:820-829. [PMID: 37396946 PMCID: PMC10311976 DOI: 10.22038/ijbms.2023.66496.14595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 03/06/2023] [Indexed: 07/04/2023]
Abstract
Objectives This study aimed to evaluate the effect of SSRIs on the expression of miRNAs and their protein targets. Materials and Methods In a 100 day open-label study of citalopram (n=25) and sertraline (n=25), levels of miRNA 16, 132, and 124 and glucocorticoid receptor (GR), Brain-derived neurotrophic factor (BDNF), and serotonin transporter (SERT) protein expression were measured by QRT-PCR and western blot in healthy control (n=20), patients with depression at the baseline, and same patients after 100 days of treatment. Results Expression levels of GR and BDNF proteins were lower in the depressed group before treatment as compared with the healthy group (P<0.0001). The SERT level was higher among the depressed group before treatment in comparison with the healthy group (P<0.0001). The level of GR and BDNF significantly increased, and SERT expression decreased after receiving sertraline (P<0.05). When the depressed group received citalopram, only SERT and GR were altered (P<0.05). Among the microRNAs' expression investigated, mir-124 and mir-132 were higher, and mir-16 was lower among the depressed compared with the healthy group (P<0.0001). Individuals receiving citalopram only showed an increase in the expression of mir-16 while administration of sertraline led to a significant increase in the expression of mir-16 and a decrease in mir-124 and mir-132 (P<0.05). Conclusion This elucidated the relationship between antidepressant treatment and the expression of different microRNA that control gene expression in various pathways involved in depressed patients. Receiving SSRI can affect the level of these proteins and their relevant microRNAs.
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Affiliation(s)
- Mahnaz Ahmadimanesh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Food and Drug Vice Presidency, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Etemad
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Dorsa Morshedi Rad
- Center of Health Technologies, School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Mohammad Hossein Ghahremani
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Hooshang Mohammadpour
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of clinical pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Jafarzadeh Esfehani
- Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Paul Jowsey
- National Institute for Health Research (NIHR), Health Protection Research Unit for Chemical and Radiation Threats and Hazards, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
| | - Fatemeh Behdani
- Psychiatry and Behavioral Sciences Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Adel Moallem
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacology and Toxicology, College of Pharmacy, Al-Zahraa University for Women, Karbala, Iraq
| | - Mohammad Reza Abbaszadegan
- Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Basic Medical Sciences Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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14
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Biphasic Response of Astrocytic Brain-Derived Neurotrophic Factor Expression following Corticosterone Stimulation. Biomolecules 2022; 12:biom12091322. [PMID: 36139161 PMCID: PMC9496348 DOI: 10.3390/biom12091322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/09/2022] [Accepted: 09/16/2022] [Indexed: 11/17/2022] Open
Abstract
Novel research studies indicate multivarious interactions of glucocorticoid hormones (GCs) with the brain-derived neurotrophic factor (BDNF), regulating important aspects of neuronal cell physiology. While there is recent evidence of the chronic effects of GC stimulation on BDNF levels, as well as of the role of BDNF stimulation in the type of genomic effects following activation of GC-sensitive receptors, no data exist concerning the acute effects of GC stimulation on BDNF/TrkB gene expression. To address this question, we conducted a chrono-pharmacological study on rodent glial cells, astrocytes, which express the BDNF receptor, TrkB, following corticosterone administration. mRNA levels of BDNF and TrkB were estimated 1, 6, 12 and 24 h post-treatment. Selective inhibitors for GC-sensitive receptors and TrkB were used to decipher the molecular pathways of the effects observed. Our data support a biphasic response of BDNF expression after corticosterone stimulation. This response is characterized by a rapid TrkB phosphorylation-dependent upregulation of BDNF mRNA within the first hour, followed by a glucocorticoid receptor (GR)-dependent downregulation of BDNF mRNA, evident at 6, 12 and 24 h, with a direct impact on the protein levels of mature BDNF. Finally, a second pulse of corticosterone administration 1 h prior to the 6, 12 or 24 h timepoints normalized BDNF expression for the corresponding timepoint (i.e., mRNA levels became indifferent from baseline). These results present for the first time a biphasic regulation of the neurotrophin system based on glucocorticoid rhythmicity, further indicating complex trophic responses to temporal hormonal mechanisms in the brain microenvironment.
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15
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Thacker JS, Mielke JG. The combined effects of corticosterone and brain-derived neurotrophic factor on plasticity-related receptor phosphorylation and expression at the synaptic surface in male Sprague-Dawley rats. Horm Behav 2022; 145:105233. [PMID: 35878471 DOI: 10.1016/j.yhbeh.2022.105233] [Citation(s) in RCA: 2] [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: 01/12/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 11/23/2022]
Abstract
Following acute exercise, a temporal window exists wherein neuroplasticity is thought to be heightened. Although a number of studies have established that pairing this post-exercise period with motor training enhances learning, the mechanisms through which exercise-induced priming occurs are not well understood. Previously, we characterized a rodent model of acute exercise that generates significant enhancement in glutamatergic receptor phosphorylation as a possible mechanism to explain how exercise-induced priming might occur. However, whether these changes are stimulated by peripheral factors (e.g., glucocorticoids), central effects (e.g., brain-derived neurotrophic factor (BDNF), or a combination of the two remains unclear. Herein, we explored the possible individual and/or cumulative contribution corticosterone (CORT) and BDNF may have on glutamate receptor phosphorylation and synaptic surface expression. Tissue slices from the sensorimotor cortex were prepared and acutely (30 min) incubated with either CORT (200 nM), BDNF (20 ng/mL), or the simultaneous application of CORT and BDNF (CORT+BDNF). Immunoblotting with biotinylated synaptoneurosomes (which provide an enrichment of proteins from the synaptic surface) suggested divergent effects between CORT and BDNF. Acute CORT application enhanced NMDA- (GluN2A, B) and AMPA- (GluA1) receptor phosphorylation, whereas BDNF preferentially increased synaptic surface expression of both NMDA- and AMPA-receptor subunits. The combined effects of CORT+BDNF resulted in a unique subset of signaling patterns that favored phosphorylation in the absence of surface expression. Taken together, these data provide a mechanistic framework for how CORT and BDNF may alter glutamatergic synapses during exercise-induced priming.
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Affiliation(s)
- Jonathan S Thacker
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, Ontario M5G 1X5, Canada; Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada.
| | - John G Mielke
- School of Public Health Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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16
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Casagrande BP, Ribeiro AM, Pisani LP, Estadella D. Hippocampal BDNF mediated anxiety-like behaviours induced by obesogenic diet withdrawal. Behav Brain Res 2022; 436:114077. [PMID: 36041572 DOI: 10.1016/j.bbr.2022.114077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/08/2022] [Accepted: 08/22/2022] [Indexed: 10/15/2022]
Abstract
Obesogenic diets (ODs) consumption is associated with anxiety-like behaviour and negative changes in hippocampal BDNF. At the same time, interrupting OD intake, OD withdrawal (WTD), can bring health benefits, but previous studies reported the development of anxiety-like behaviours. The present work aimed to assess the relationship between anxiety-like behaviour with hippocampal BDNF in a WTD rodent model. Male Wistar rats (60d old) were fed a high-sugar/high-fat (HSHF) diet for 30d (n=32), and half of them were transitioned to a control diet for 48h (n=16) afterwards. The control group (n=16) was fed a control diet across the whole experiment. Besides increasing anxiety-like behaviours and lowering sociability, the WTD led to an increase in BDNF in the dentate gyrus and the CA1 of the hippocampus. It also decreased locomotor activity in both OF and EPM, however, they did not significantly interfere with the other behavioural parameters analysed. Western blotting analysis revealed that the increase in BDNF likely occurred in the mature forms (14kD monomer and 28kD dimer). The mediation models analyses suggested that the effect of WTD on anxiety-like behaviour was driven by hippocampal BDNF, this mediation of effect was region-dependent. Our results also suggested that mature BDNF forms (14kD and 28kD) were responsible. The present work brought light to a possible new role for mature BDNF, although it is generally associated with beneficial features, it can also be part of the genesis of anxiety-like behaviours and sociability aspects on WTD models.
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Affiliation(s)
- Breno Picin Casagrande
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo, 1015-020, Santos, São Paulo, Brazil.
| | - Alessandra Mussi Ribeiro
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo, 1015-020, Santos, São Paulo, Brazil.
| | - Luciana Pellegrini Pisani
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo, 1015-020, Santos, São Paulo, Brazil.
| | - Debora Estadella
- Biosciences Department, Institute of Health and Society, Federal University of São Paulo, 1015-020, Santos, São Paulo, Brazil.
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17
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Yuan N, Li X, Tang K, Gan H, Da X, Hao W, Deng L, Huang J, Ma Q, Wu M, Chen J. Xiaoyaosan inhibits neuronal apoptosis by regulating the miR-200/NR3C1 signaling in the prefrontal cortex of chronically stressed rats. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 103:154239. [PMID: 35716541 DOI: 10.1016/j.phymed.2022.154239] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/21/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Depression is a prevalent emotion disorder which is thought to be due to neuronal structural alterations and/or functional impairment within specific brain regions. Several studies have shown that microRNAs are involved in the pathogenesis of depression. As a Chinese herbal formula, Xiaoyaosan (XYS) could have antidepressive effects, although the mechanisms associated with microRNAs are poorly understood. PURPOSE In this study, we investigated whether inhibition of the miR-200a/b-3p/NR3C1 pathway in the prefrontal cortex is involved in the anti-neuronal apoptosis and anti-stress effects of XYS and then further delineated the underlying mechanism. METHODS To evaluate the efficacy of XYS in relieving stress behaviors and altering the expression of miRNAs involved in the regulation of these behaviors in vivo, a chronic unpredictable mild stress (CUMS) rodent model and RNA-seq were performed. Primary cortical neurons were used to evaluate the molecular function of miR-200a/b-3p and detect the in vitro neuroprotective function of paeoniflorin, which is one of the main components of XYS. To investigate the function of miR-200a/b-3p in stress behaviors, stereotactic microinjection of AAV2/9-Syn-miR-200a/b-3p was performed to deliver the treatment to the rat mPFC. RESULTS XYS reduced the anxiety and depression-like behaviors associated with chronic stress and reduced the expression of miR-200a/b-3p and neuronal apoptosis in the prefrontal cortex (PFC). The overexpression of miR-200a/b-3p in primary cortical neurons reduced the expression of the target gene NR3C1, increased the protein expression of cleaved caspase-3 and Bax, and decreased the anti-apoptotic protein Bcl-2. One of the active ingredients of XYS, paeoniflorin, can inhibit miR-200a/b-3p-mediated apoptosis of primary neurons and abnormal expression of apoptosis-related proteins. After overexpressing miR-200a/b-3p in vivo (vmPFC), the rats eventually showed significant anxiety-like behaviors similar to those caused by chronic stress. CONCLUSION Our findings indicate that XYS can inhibit the CUMS-induced expression of miR-200a/b-3p, regulate miR-200a/b-3p/NR3C1 signaling in the PFC caused by chronic stress, and reduce neuronal apoptosis and stress-related behaviors.
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Affiliation(s)
- Naijun Yuan
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Xiaojuan Li
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Kairui Tang
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Hua Gan
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Xiaoli Da
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Wenzhi Hao
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Lijuan Deng
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Junqing Huang
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Qingyu Ma
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China.
| | - Mansi Wu
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China.
| | - Jiaxu Chen
- Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China; School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
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18
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Dromard Y, Arango-Lievano M, Borie A, Dedin M, Fontanaud P, Torrent J, Garabedian MJ, Ginsberg SD, Jeanneteau F. Loss of glucocorticoid receptor phosphorylation contributes to cognitive and neurocentric damages of the amyloid-β pathway. Acta Neuropathol Commun 2022; 10:91. [PMID: 35733193 PMCID: PMC9219215 DOI: 10.1186/s40478-022-01396-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 12/22/2022] Open
Abstract
Aberrant cortisol and activation of the glucocorticoid receptor (GR) play an essential role in age-related progression of Alzheimer's disease (AD). However, the GR pathways required for influencing the pathobiology of AD dementia remain unknown. To address this, we studied an early phase of AD-like progression in the well-established APP/PS1 mouse model combined with targeted mutations in the BDNF-dependent GR phosphorylation sites (serines 134/267) using molecular, behavioral and neuroimaging approaches. We found that disrupting GR phosphorylation (S134A/S267A) in mice exacerbated the deleterious effects of the APP/PS1 genotype on mortality, neuroplasticity and cognition, without affecting either amyloid-β deposition or vascular pathology. The dynamics, maturation and retention of task-induced new dendritic spines of cortical excitatory neurons required GR phosphorylation at the BDNF-dependent sites that amyloid-β compromised. Parallel studies in postmortem human prefrontal cortex revealed AD subjects had downregulated BDNF signaling and concomitant upregulated cortisol pathway activation, which correlated with cognitive decline. These results provide key evidence that the loss of neurotrophin-mediated GR phosphorylation pathway promotes the detrimental effects of the brain cortisol response that contributes to the onset and/or progression of AD dementia. These findings have important translational implications as they provide a novel approach to treating AD dementia by identifying drugs that increase GR phosphorylation selectively at the neurotrophic sites to improve memory and cognition.
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Affiliation(s)
- Yann Dromard
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Margarita Arango-Lievano
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Amelie Borie
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Maheva Dedin
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France
| | - Pierre Fontanaud
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France.,Imagerie du Petit Animal de Montpellier, 34090, Montpellier, France
| | - Joan Torrent
- Institut de Neuroscience de Montpellier, INSERM, 34090, Montpellier, France
| | - Michael J Garabedian
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY, 10016, USA
| | - Stephen D Ginsberg
- Nathan Kline Institute, Orangeburg, NY, 10962, USA.,Departments of Psychiatry, Neuroscience & Physiology, NYU Neuroscience Institute, New York University Grossman School of Medicine, New York, NY, 10016, USA
| | - Freddy Jeanneteau
- Institut de Génomiqueénomique Fonctionnelle, Université de Montpellier, INSERM, CNRS, 34090, Montpellier, France.
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19
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Belity T, Horowitz M, Hoffman JR, Epstein Y, Bruchim Y, Todder D, Cohen H. Heat-Stress Preconditioning Attenuates Behavioral Responses to Psychological Stress: The Role of HSP-70 in Modulating Stress Responses. Int J Mol Sci 2022; 23:ijms23084129. [PMID: 35456946 PMCID: PMC9031159 DOI: 10.3390/ijms23084129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/28/2022] [Accepted: 04/06/2022] [Indexed: 11/16/2022] Open
Abstract
Exposure to high ambient temperature is a stressor that influences both biological and behavioral functions and has been previously shown to have an extensive impact on brain structure and function. Physiological, cellular and behavioral responses to heat-stress (HS) (40-41 °C, 2 h) were evaluated in adult male Sprague-Dawley rats. The effect of HS exposure before predator-scent stress (PSS) exposure (i.e., HS preconditioning) was examined. Finally, a possible mechanism of HS-preconditioning to PSS was investigated. Immunohistochemical analyses of chosen cellular markers were performed in the hippocampus and in the hypothalamic paraventricular nucleus (PVN). Plasma corticosterone levels were evaluated, and the behavioral assessment included the elevated plus-maze (EPM) and the acoustic startle response (ASR) paradigms. Endogenous levels of heat shock protein (HSP)-70 were manipulated using an amino acid (L-glutamine) and a pharmacological agent (Doxazosin). A single exposure to an acute HS resulted in decreased body mass (BM), increased body temperature and increased corticosterone levels. Additionally, extensive cellular, but not behavioral changes were noted. HS-preconditioning provided behavioral resiliency to anxiety-like behavior associated with PSS, possibly through the induction of HSP-70. Targeting of HSP-70 is an attractive strategy for stress-related psychopathology treatment.
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Affiliation(s)
- Tal Belity
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel;
| | - Michal Horowitz
- Laboratory of Environmental Physiology, Faculty of Dental Medicine, The Hebrew University, Jerusalem 9112102, Israel; (M.H.); (Y.B.)
| | - Jay R. Hoffman
- Department of Physical Therapy, Ariel University, Ariel 40700, Israel;
| | - Yoram Epstein
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv and the Heller Institute of Medical Research, Sheba Medical Center, Ramat Gan 52621, Israel;
| | - Yaron Bruchim
- Laboratory of Environmental Physiology, Faculty of Dental Medicine, The Hebrew University, Jerusalem 9112102, Israel; (M.H.); (Y.B.)
- Intensive Care, Veterinary Emergency and Specialist Center, Youth Village Ben Shemen, Ben-Shemen 7311200, Israel
| | - Doron Todder
- Beer-Sheva Mental Health Center, Ministry of Health, Anxiety and Stress Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8461144, Israel;
| | - Hagit Cohen
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel;
- Beer-Sheva Mental Health Center, Ministry of Health, Anxiety and Stress Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8461144, Israel;
- Correspondence: ; Tel.: +972-8-6401743
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20
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Chakraborty P, Chattarji S, Jeanneteau F. A salience hypothesis of stress in PTSD. Eur J Neurosci 2021; 54:8029-8051. [PMID: 34766390 DOI: 10.1111/ejn.15526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/13/2021] [Accepted: 10/30/2021] [Indexed: 11/30/2022]
Abstract
Attention to key features of contexts and things is a necessary tool for all organisms. Detecting these salient features of cues, or simply, salience, can also be affected by exposure to traumatic stress, as has been widely reported in individuals suffering from post-traumatic stress disorder (PTSD). Interestingly, similar observations have been robustly replicated across many animal models of stress as well. By using evidence from such rodent stress paradigms, in the present review, we explore PTSD through the lens of salience processing. In this context, we propose that interaction between the neurotrophin brain-derived neurotrophic factor (BDNF) and glucocorticoids determines the long lasting cellular and behavioural consequences of stress salience. We also describe the dual effect of glucocorticoid therapy in the amelioration of PTSD symptoms. Finally, by integrating in vivo observations at multiple scales of plasticity, we propose a unifying hypothesis that pivots on a crucial role of glucocorticoid signalling in dynamically orchestrating stress salience.
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Affiliation(s)
- Prabahan Chakraborty
- Institut de Genomique Fonctionnelle, University of Montpellier, Inserm, CNRS, Montpellier, 34090, France.,Tata Institute of Fundamental Research, National Centre for Biological Sciences, Bellary Road, Bangalore, 560065, India
| | - Sumantra Chattarji
- Tata Institute of Fundamental Research, National Centre for Biological Sciences, Bellary Road, Bangalore, 560065, India.,Centre for Brain Development and Repair, Institute for Stem Cell Biology and Regenerative Medicine, Bangalore, India.,Centre for Discovery Brain Sciences, Deanery of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
| | - Freddy Jeanneteau
- Institut de Genomique Fonctionnelle, University of Montpellier, Inserm, CNRS, Montpellier, 34090, France
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21
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Herzog DP, Perumal N, Manicam C, Treccani G, Nadig J, Rossmanith M, Engelmann J, Jene T, Hasch A, van der Kooij MA, Lieb K, Gassen NC, Grus FH, Müller MB. Longitudinal CSF proteome profiling in mice to uncover the acute and sustained mechanisms of action of rapid acting antidepressant (2R,6R)-hydroxynorketamine (HNK). Neurobiol Stress 2021; 15:100404. [PMID: 34632008 PMCID: PMC8488754 DOI: 10.1016/j.ynstr.2021.100404] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/16/2021] [Accepted: 09/26/2021] [Indexed: 02/04/2023] Open
Abstract
Delayed onset of antidepressant action is a shortcoming in depression treatment. Ketamine and its metabolite (2R,6R)-hydroxynorketamine (HNK) have emerged as promising rapid-acting antidepressants. However, their mechanism of action remains unknown. In this study, we first described the anxious and depression-prone inbred mouse strain, DBA/2J, as an animal model to assess the antidepressant-like effects of ketamine and HNK in vivo. To decode the molecular mechanisms mediating HNK's rapid antidepressant effects, a longitudinal cerebrospinal fluid (CSF) proteome profiling of its acute and sustained effects was conducted using an unbiased, hypothesis-free mass spectrometry-based proteomics approach. A total of 387 proteins were identified, with a major implication of significantly differentially expressed proteins in the glucocorticoid receptor (GR) signaling pathway, providing evidence for a link between HNK and regulation of the stress hormone system. Mechanistically, we identified HNK to repress GR-mediated transcription and reduce hormonal sensitivity of GR in vitro. In addition, mammalian target of rapamycin (mTOR) and brain-derived neurotrophic factor (BDNF) were predicted to be important upstream regulators of HNK treatment. Our results contribute to precise understanding of the temporal dynamics and molecular targets underlying HNK's rapid antidepressant-like effects, which can be used as a benchmark for improved treatment strategies for depression in future.
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Affiliation(s)
- David P Herzog
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Natarajan Perumal
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Caroline Manicam
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Giulia Treccani
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Institute for Microscopic Anatomy and Neurobiology, Johannes Gutenberg University Medical Center, Mainz, Germany.,Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Risskov, Denmark
| | - Jens Nadig
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Milena Rossmanith
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Jan Engelmann
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Tanja Jene
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Annika Hasch
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Michael A van der Kooij
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
| | - Klaus Lieb
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
| | - Nils C Gassen
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Medical Center Bonn, Bonn, Germany
| | - Franz H Grus
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Marianne B Müller
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
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22
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Dual imaging of dendritic spines and mitochondria in vivo reveals hotspots of plasticity and metabolic adaptation to stress. Neurobiol Stress 2021; 15:100402. [PMID: 34611532 PMCID: PMC8477201 DOI: 10.1016/j.ynstr.2021.100402] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 01/09/2023] Open
Abstract
Metabolic adaptation is a critical feature of synaptic plasticity. Indeed, synaptic plasticity requires the utilization and resupply of metabolites, in particular when the turnover is high and fast such as in stress conditions. What accounts for the localized energy burden of the post-synaptic compartment to the build up of chronic stress is currently not understood. We used in vivo microscopy of genetically encoded fluorescent probes to track changes of mitochondria, dendritic spines, ATP and H2O2 levels in pyramidal neurons of cortex before and after chronic unpredictable mild stress. Data revealed hotspots of postsynaptic mitochondria and dendritic spine turnover. Pharmacogenetic approach to force expression of the metabolic stress gene NR4A1 caused the fragmentation of postsynaptic mitochondria and loss of proximal dendritic spine clusters, whereas a dominant-negative mutant counteracted the effect of chronic stress. When fragmented, dendritic mitochondria produced lesser ATP at resting state and more on acute demand. This corresponded with significant production of mitochondrial H2O2 oxidative species in the dendritic compartment. Together, data indicate that pyramidal neurons adjust proximal dendritic spine turnover and mitochondria functions in keeping with synaptic demands. Addition of dendritic spine clusters match with more proximal mitochondria coverage. Loss of dendritic spine clusters match with less proximal mitochondria coverage. Dendrites alter spine dynamics, ATP and H202 production in keeping with excitation. In excess, the transcription factor NR4A1 promotes cross-clustering losses. Blocking NR4A1 prevents net cross-clustering losses mediated by chronic stress.
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23
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Zhang B, Yang M, Yan Q, Xu X, Niu F, Dong J, Zhuang Y, Lu S, Ge Q, Liu B. The Dual Dose-Dependent Effects of Corticosterone on Hippocampal Cell Apoptosis After Traumatic Brain Injury Depend on the Activation Ratio of Mineralocorticoid Receptors to Glucocorticoid Receptors. Front Pharmacol 2021; 12:713715. [PMID: 34381366 PMCID: PMC8350576 DOI: 10.3389/fphar.2021.713715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/13/2021] [Indexed: 01/11/2023] Open
Abstract
In our recent studies, we reported that mineralocorticoid receptor (MR) had the opposite effects of glucocorticoid receptor (GR) on neural cell survival after traumatic brain injury (TBI). However, whether short-term use of high-dose natural glucocorticoids, which are mixed agonists of both MR and GR, leads to neurotoxic effects by inducing excessive GR activation is unclear, as is the threshold GR activation level and the possible signaling pathways remain unclear. In this study, we examined the dual dose-dependent effects of corticosterone (CORT) on spatial memory, hippocampal cell survival and receptor-mediated downstream signaling pathways after TBI. We found that different doses of CORT exhibited dual effects on hippocampal cell survival and rat spatial memory. Low doses of CORT (0.3 and 3 mg/kg) significantly increased MR activation, upregulated Akt/CREB/Bad phosphorylation and Bcl-2 concentration, reduced the number of apoptotic neural cells, and subsequently improved rat spatial memory. In contrast, a high dose of CORT (30 mg/kg) exerted the opposite effects by overactivating GR, upregulating P53/Bax levels, and inhibiting Erk/CREB activity. The results suggest that the neuroprotective and neurotoxic effects of endogenous GC depend on a threshold level and that a higher dose of GC, even for short-term use, should be avoided after TBI.
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Affiliation(s)
- Bin Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Mengshi Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Qiongyu Yan
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaojian Xu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Fei Niu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Jinqian Dong
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yuan Zhuang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Shenghua Lu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Qianqian Ge
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Baiyun Liu
- Department of Neurosurgery and Beijing Key Laboratory of Central Nervous System Injury, Beijing Tiantan Hospital and Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- Nerve Injury and Repair Center of Beijing Institute for Brain Disorders, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
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24
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Girgenti MJ, Pothula S, Newton SS. Stress and Its Impact on the Transcriptome. Biol Psychiatry 2021; 90:102-108. [PMID: 33637305 PMCID: PMC8213869 DOI: 10.1016/j.biopsych.2020.12.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/01/2020] [Accepted: 12/14/2020] [Indexed: 01/30/2023]
Abstract
Exposure to stress during the course of a lifetime is inevitable in the animal kingdom. It is the response to stress, the valence of the exposure, and the developmental time point that largely determine the consequences to the initial and subsequent exposures. The versatility of transcriptomic methods to yield rich, high-resolution, information-laden datasets from entire brain regions to single cells makes it a powerful approach to investigate the effects of stress from several angles. Dysregulation of the transcriptome is now a phenotypic signature of many neuropsychiatric disorders. New insight has been gained from examining stress-induced changes in gene expression at a global scale. Human postmortem datasets from depression and posttraumatic stress disorder studies have identified major gene expression changes in the diseased brain, including sex-specific changes and marked differences in male and female molecular profiles for the same disorder. Extensions of this work into animal models have explored the impact of transcriptomic dysregulation on early-life stress, chronic stress, and transgenerational impact of stress. Here, we explore the findings of human postmortem genomic studies of neuropsychiatric disorders and comparable animal models through the lens of transcriptomic dysregulation and how these findings have contributed to our understanding of stress.
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Affiliation(s)
- Matthew J Girgenti
- Department of Psychiatry, Yale School of Medicine, New Haven, CT,Psychiatry Service, VA Connecticut Healthcare System, West Haven, CT,National Center for PTSD, U.S. Department of Veterans Affairs
| | - Santosh Pothula
- Department of Psychiatry, Yale School of Medicine, New Haven, CT
| | - Samuel S Newton
- Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota; Sioux Falls VA Healthcare System, Sioux Falls, South Dakota.
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25
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Podyma B, Parekh K, Güler AD, Deppmann CD. Metabolic homeostasis via BDNF and its receptors. Trends Endocrinol Metab 2021; 32:488-499. [PMID: 33958275 PMCID: PMC8192464 DOI: 10.1016/j.tem.2021.04.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022]
Abstract
Metabolic disorders result from dysregulation of central nervous system and peripheral metabolic energy homeostatic pathways. To maintain normal energy balance, neural circuits must integrate feedforward and feedback signals from the internal metabolic environment to orchestrate proper food intake and energy expenditure. These signals include conserved meal and adipocyte cues such as glucose and leptin, respectively, in addition to more novel players including brain-derived neurotrophic factor (BDNF). In particular, BDNF's two receptors, tropomyosin related kinase B (TrkB) and p75 neurotrophin receptor (p75NTR), are increasingly appreciated to be involved in whole body energy homeostasis. At times, these two receptors even seem to functionally oppose one another's actions, providing the framework for a potential neurotrophin mediated energy regulatory axis, which we explore further here.
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Affiliation(s)
- Brandon Podyma
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA; Medical Scientist Training Program, School of Medicine, University of Virginia, Charlottesville, VA 22908-0738, USA.
| | - Kavya Parekh
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA
| | - Ali D Güler
- Department of Biology, University of Virginia, Charlottesville, VA 22903, USA
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26
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Lidhar NK, Darvish-Ghane S, Sivaselvachandran S, Khan S, Wasif F, Turner H, Sivaselvachandran M, Fournier NM, Martin LJ. Prelimbic cortex glucocorticoid receptors regulate the stress-mediated inhibition of pain contagion in male mice. Neuropsychopharmacology 2021; 46:1183-1193. [PMID: 33223518 PMCID: PMC8115346 DOI: 10.1038/s41386-020-00912-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 12/29/2022]
Abstract
Experiencing pain with a familiar individual can enhance one's own pain sensitivity, a process known as pain contagion. When experiencing pain with an unfamiliar individual, pain contagion is suppressed in males by activating the endocrine stress response. Here, we coupled a histological investigation with pharmacological and behavioral experiments to identify enhanced glucocorticoid receptor activity in the prelimbic subdivision of the medial prefrontal cortex as a candidate mechanism for suppressing pain contagion in stranger mice. Acute inhibition of glucocorticoid receptors in the prelimbic cortex was sufficient to elicit pain contagion in strangers, while their activation prevented pain contagion in cagemate dyads. Slice physiology recordings revealed enhanced excitatory transmission in stranger mice, an effect that was reversed by pre-treating mice with the corticosterone synthesis inhibitor metyrapone. Following removal from dyadic testing, stranger mice displayed enhanced affective-motivational pain behaviors when placed on an inescapable thermal stimulus, which were reversed by metyrapone. Together, our data suggest that the prelimbic cortex may play an integral role in modulating pain behavior within a social context and provide novel evidence towards the neural mechanism underlying the prevention of pain contagion.
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Affiliation(s)
- Navdeep K. Lidhar
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada
| | - Soroush Darvish-Ghane
- grid.17063.330000 0001 2157 2938Department of Cell and Systems Biology, University of Toronto Mississauga, Mississauga, ON L5L1C6 Canada
| | - Sivaani Sivaselvachandran
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada
| | - Sana Khan
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada
| | - Fatima Wasif
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada
| | - Holly Turner
- grid.52539.380000 0001 1090 2022Department of Psychology, Trent University, Peterborough, ON K9J 7B8 Canada
| | - Meruba Sivaselvachandran
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada
| | - Neil M. Fournier
- grid.52539.380000 0001 1090 2022Department of Psychology, Trent University, Peterborough, ON K9J 7B8 Canada
| | - Loren J. Martin
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6 Canada ,grid.17063.330000 0001 2157 2938Department of Cell and Systems Biology, University of Toronto Mississauga, Mississauga, ON L5L1C6 Canada
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27
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HUZARD D, RAPPENEAU V, MEIJER OC, TOUMA C, ARANGO-LIEVANO M, GARABEDIAN MJ, JEANNETEAU F. Experience and activity-dependent control of glucocorticoid receptors during the stress response in large-scale brain networks. Stress 2021; 24:130-153. [PMID: 32755268 PMCID: PMC7907260 DOI: 10.1080/10253890.2020.1806226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The diversity of actions of the glucocorticoid stress hormones among individuals and within organs, tissues and cells is shaped by age, gender, genetics, metabolism, and the quantity of exposure. However, such factors cannot explain the heterogeneity of responses in the brain within cells of the same lineage, or similar tissue environment, or in the same individual. Here, we argue that the stress response is continuously updated by synchronized neural activity on large-scale brain networks. This occurs at the molecular, cellular and behavioral levels by crosstalk communication between activity-dependent and glucocorticoid signaling pathways, which updates the diversity of responses based on prior experience. Such a Bayesian process determines adaptation to the demands of the body and external world. We propose a framework for understanding how the diversity of glucocorticoid actions throughout brain networks is essential for supporting optimal health, while its disruption may contribute to the pathophysiology of stress-related disorders, such as major depression, and resistance to therapeutic treatments.
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Affiliation(s)
- Damien HUZARD
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
| | - Virginie RAPPENEAU
- Department of Behavioural Biology, University of Osnabrück, Osnabrück, Germany
| | - Onno C. MEIJER
- Division of Endocrinology, Department of Internal Medicine, Leiden University Medical Center, Leiden University, Leiden, the Netherlands
| | - Chadi TOUMA
- Department of Behavioural Biology, University of Osnabrück, Osnabrück, Germany
| | - Margarita ARANGO-LIEVANO
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
| | | | - Freddy JEANNETEAU
- Department of Neuroscience and Physiology, University of Montpellier, CNRS, INSERM, Institut de Génomique Fonctionnelle, Montpellier, France
- Corresponding author:
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28
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Tejos-Bravo M, Oakley RH, Whirledge SD, Corrales WA, Silva JP, García-Rojo G, Toledo J, Sanchez W, Román-Albasini L, Aliaga E, Aguayo F, Olave F, Maracaja-Coutinho V, Cidlowski JA, Fiedler JL. Deletion of hippocampal Glucocorticoid receptors unveils sex-biased microRNA expression and neuronal morphology alterations in mice. Neurobiol Stress 2021; 14:100306. [PMID: 33665240 PMCID: PMC7906897 DOI: 10.1016/j.ynstr.2021.100306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 01/18/2021] [Accepted: 02/02/2021] [Indexed: 12/14/2022] Open
Abstract
Sex differences in the brain have prompted many researchers to investigate the underlying molecular actors, such as the glucocorticoid receptor (GR). This nuclear receptor controls gene expression, including microRNAs (miRNAs), in non-neuronal cells. Here, we investigated sex-biased effects of GR on hippocampal miRNA expression and neuronal morphology by generating a neuron-specific GR knockout mouse (Emx1-Nr3c1−/−). The levels of 578 mature miRNAs were assessed using NanoString technology and, in contrast to males, female Emx1-Nr3c1−/− mice showed a substantially higher number of differentially expressed miRNAs, confirming a sex-biased effect of GR ablation. Based on bioinformatic analyses we identified several transcription factors potentially involved in miRNA regulation. Functional enrichment analyses of the miRNA-mRNA interactions revealed pathways related to neuronal arborization and both spine morphology and density in both sexes. Two recognized regulators of dendritic morphology, CAMKII-α and GSK-3β, increased their protein levels by GR ablation in female mice hippocampus, without changes in males. Additionally, sex-specific effects of GR deletion were observed on CA1 neuronal arborization and dendritic spine features. For instance, a reduced density of mushroom spines in apical dendrites was evidenced only in females, while a decreased length in basal dendrites was noted only in males. However, length and arborization of apical dendrites were reduced by GR ablation irrespective of the sex. Overall, our study provides new insights into the sex-biased GR actions, especially in terms of miRNAs expression and neuronal morphology in the hippocampus.
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Affiliation(s)
- Macarena Tejos-Bravo
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Robert H Oakley
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, 27709, USA
| | - Shannon D Whirledge
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, 27709, USA
| | - Wladimir A Corrales
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Juan P Silva
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Gonzalo García-Rojo
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile.,Carrera de Odontología. Facultad de Ciencias, Universidad de La Serena, La Serena, Chile
| | - Jorge Toledo
- Laboratory of Scientific Image Analysis (SCIAN-Lab), Biomedical Neuroscience Institute, Faculty of Medicine, Universidad de Chile, Independencia 1027, Santiago, 8380453, Chile
| | - Wendy Sanchez
- Laboratory of Scientific Image Analysis (SCIAN-Lab), Biomedical Neuroscience Institute, Faculty of Medicine, Universidad de Chile, Independencia 1027, Santiago, 8380453, Chile
| | - Luciano Román-Albasini
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Esteban Aliaga
- Department of Kinesiology and the Neuropsychology and Cognitive Neurosciences Research Center (CINPSI-Neurocog), Faculty of Health Sciences, Universidad Católica del Maule, Talca, Chile
| | - Felipe Aguayo
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Felipe Olave
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - Vinicius Maracaja-Coutinho
- Advanced Center for Chronic Diseases -ACCDiS. Faculty of Chemical and Pharmaceutical Sciences. Department of Biochemistry and Molecular Biology. Universidad de Chile, Independencia, 8380492, Santiago, Chile
| | - John A Cidlowski
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, 27709, USA
| | - Jenny L Fiedler
- Laboratory of Neuroplasticity and Neurogenetics, Faculty of Chemical and Pharmaceutical Sciences, Department of Biochemistry and Molecular Biology, Universidad de Chile, Independencia, 8380492, Santiago, Chile
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29
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Zhang B, Bai M, Xu X, Yang M, Niu F, Gao F, Liu B. Corticosteroid receptor rebalancing alleviates critical illness-related corticosteroid insufficiency after traumatic brain injury by promoting paraventricular nuclear cell survival via Akt/CREB/BDNF signaling. J Neuroinflammation 2020; 17:318. [PMID: 33100225 PMCID: PMC7586672 DOI: 10.1186/s12974-020-02000-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/16/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND We previously found that high-dose methylprednisolone increased the incidence of critical illness-related corticosteroid insufficiency (CIRCI) and mortality in rats with traumatic brain injury (TBI), whereas low-dose hydrocortisone but not methylprednisolone exerted protective effects. However, the receptor-mediated mechanism remains unclear. This study investigated the receptor-mediated mechanism of the opposite effects of different glucocorticoids on the survival of paraventricular nucleus (PVN) cells and the incidence of CIRCI after TBI. METHODS Based on controlled cortical impact (CCI) and treatments, male SD rats (n = 300) were randomly divided into the sham, CCI, CCI + GCs (methylprednisolone 1 or 30 mg/kg/day; corticosterone 1 mg/kg/day), CCI + methylprednisolone+RU486 (RU486 50 mg/kg/day), and CCI + corticosterone+spironolactone (spironolactone 50 mg/kg/day) groups. Blood samples were collected 7 days before and after CCI. Brain tissues were collected on postinjury day 7 and processed for histology and western blot analysis. RESULTS We examined the incidence of CIRCI, mortality, apoptosis in the PVN, the receptor-mediated mechanism, and downstream signaling pathways on postinjury day 7. We found that methylprednisolone and corticosterone exerted opposite effects on the survival of PVN cells and the incidence of CIRCI by activating different receptors. High-dose methylprednisolone increased the nuclear glucocorticoid receptor (GR) level and subsequently increased cell loss in the PVN and the incidence of CIRCI. In contrast, low-dose corticosterone but not methylprednisolone played a protective role by upregulating mineralocorticoid receptor (MR) activation. The possible downstream receptor signaling mechanism involved the differential effects of GR and MR on the activity of the Akt/CREB/BDNF pathway. CONCLUSION The excessive activation of GR by high-dose methylprednisolone exacerbated apoptosis in the PVN and increased CIRCI. In contrast, refilling of MR by corticosterone protects PVN neurons and reduces the incidence of CIRCI by promoting GR/MR rebalancing after TBI.
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Affiliation(s)
- Bin Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Miao Bai
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiaojian Xu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Mengshi Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Fei Niu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Fei Gao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Baiyun Liu
- Beijing Key Laboratory of Central Nervous System Injury and Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, No.119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, People's Republic of China.
- Nerve Injury and Repair Center of Beijing Institute for Brain Disorders, Beijing, China.
- China National Clinical Research Center for Neurological Diseases, Beijing, China.
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30
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Xiaoyao Pills Attenuate Inflammation and Nerve Injury Induced by Lipopolysaccharide in Hippocampal Neurons In Vitro. Neural Plast 2020; 2020:8841332. [PMID: 33014035 PMCID: PMC7525321 DOI: 10.1155/2020/8841332] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/27/2020] [Accepted: 09/01/2020] [Indexed: 12/12/2022] Open
Abstract
Lipopolysaccharides (LPS) are proinflammation mediators that can induce the inflammatory model of the hippocampal neuron, and neuroinflammation participates in the pathophysiology of depression. Xiaoyao Pill is a classical Chinese medicine formula that has been used for the treatment of mental disorders such as depression in China since the Song dynasty. We established a hippocampal neuronal cell inflammation model by LPS and investigate the intervention effect and mechanism of Xiaoyao Pills. The expression levels of IL-6, TNF-α, IDO, 5-HT, brain-derived neurotrophic factor, and β-nerve growth factor were detected by enzyme-linked immunosorbent assay. mRNA levels of IL-6, TNF-α, 5-HT1A, IDO-1, brain-derived neurotrophic factor, nerve growth factor, tropomyosin receptor kinase B, tropomyosin receptor kinase A, and cAMP response element-binding protein were detected by reverse transcription-polymerase chain reaction. To further validate, protein expression was determined by western blot and immunofluorescence. Lipopolysaccharide-induced neuroinflammatory state resulted in the release of IL-6, TNF-α, and IDO and a decrease of BDNF, NGF, TrkB, TrkA, CREB, p-CREB, p-CREB/CREB, and SYP and inhibited hippocampal neurogenesis in the hippocampal neuron. Xiaoyao Pills significantly decreased the levels of IL-6, TNF-α, and IDO in cell supernatant and increased the expression of BDNF, NGF, TrkB, TrkA, CREB, p-CREB, p-CREB/CREB, and SYP as well as the average optical density of BrdU/NeuN double-labelled positive cells. Our study shows that lipopolysaccharides induce inflammation and nerve damage in hippocampal neurons, which are closely related to the pathological mechanism of depression. Xiaoyao Pills (XYW) play an important neuroprotective effect, which is related to its inhibition of neuronal inflammation and promoting the recovery of nerve injury. These results provide a pharmacologic basis for the treatment of depression of XYW in clinical application.
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31
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Early-life short-term environmental enrichment counteracts the effects of stress on anxiety-like behavior, brain-derived neurotrophic factor and nuclear translocation of glucocorticoid receptors in the basolateral amygdala. Sci Rep 2020; 10:14053. [PMID: 32820184 PMCID: PMC7441150 DOI: 10.1038/s41598-020-70875-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/30/2020] [Indexed: 01/16/2023] Open
Abstract
Early life is a decisive stage for the development of physiological and psychological characteristics of an individual. Any stress or disruption of healthy development at this stage has serious long-lasting consequences for the remaining life. Unfortunately, early life stress is a common occurrence in humans and other animals. In this context, we investigated if the provision of environmental enrichment during the pre-weaning phase of rat pups and dams could alter the consequences of early-life maternal-separation stress. Pre-weaning enrichment rescued the effects of maternal separation on the excess secretion of adrenal stress hormones and anxiety-like behavior during adulthood. Enrichment also reduced the effect of stress on the spine density of basolateral amygdala neurons, a brain region critical for stress-induced facilitation of emotional behaviors. Pre-weaning enrichment, provided during early-life, blunted the effects of maternal separation stress on decreased intra-nuclear translocation of glucocorticoid receptors within the amygdala neurons when tested later in adulthood. Early-life, pre-weaning environmental enrichment also increased the amount of brain-derived neurotrophic factor within adult basolateral amygdala. Our observations showed that environmental manipulation during early formative years could be utilized to build lifelong resilience to stress. Complex naturalistic housing and sensory enrichment is, thus, an useful buffer against an impoverished and stressful childhood.
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32
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Sbrini G, Brivio P, Peeva PM, Todiras M, Bader M, Alenina N, Calabrese F. The Absence of Serotonin in the Brain Alters Acute Stress Responsiveness by Interfering With the Genomic Function of the Glucocorticoid Receptors. Front Cell Neurosci 2020; 14:128. [PMID: 32547368 PMCID: PMC7278285 DOI: 10.3389/fncel.2020.00128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/17/2020] [Indexed: 12/29/2022] Open
Abstract
Alterations in serotonergic transmission have been related to a major predisposition to develop psychiatric pathologies, such as depression. We took advantage of tryptophan hydroxylase (TPH) 2 deficient rats, characterized by a complete absence of serotonin in the brain, to evaluate whether a vulnerable genotype may influence the reaction to an acute stressor. In this context, we investigated if the glucocorticoid receptor (GR) genomic pathway activation was altered by the lack of serotonin in the central nervous system. Moreover, we analyzed the transcription pattern of the clock genes that can be affected by acute stressors. Adult wild type (TPH2+/+) and TPH2-deficient (TPH2-/-) male rats were sacrificed after exposure to one single session of acute restraint stress. Protein and gene expression analyses were conducted in the prefrontal cortex (PFC). The acute stress enhanced the translocation of GRs in the nucleus of TPH2+/+ animals. This effect was blunted in TPH2-/- rats, suggesting an impairment of the GR genomic mechanism. This alteration was mirrored in the expression of GR-responsive genes: acute stress led to the up-regulation of GR-target gene expression in TPH2+/+, but not in TPH2-/- animals. Finally, clock genes were differently modulated in the two genotypes after the acute restraint stress. Overall our findings suggest that the absence of serotonin within the brain interferes with the ability of the HPA axis to correctly modulate the response to acute stress, by altering the nuclear mechanisms of the GR and modulation of clock genes expression.
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Affiliation(s)
- Giulia Sbrini
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Paola Brivio
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Polina Mineva Peeva
- Cardiovascular and Metabolic Diseases, Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany
| | - Mihail Todiras
- Cardiovascular and Metabolic Diseases, Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany
| | - Michael Bader
- Cardiovascular and Metabolic Diseases, Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany.,Charite-University Medicine, Berlin, Germany
| | - Natalia Alenina
- Cardiovascular and Metabolic Diseases, Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Francesca Calabrese
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy
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Woon EP, Sequeira MK, Barbee BR, Gourley SL. Involvement of the rodent prelimbic and medial orbitofrontal cortices in goal-directed action: A brief review. J Neurosci Res 2020; 98:1020-1030. [PMID: 31820488 PMCID: PMC7392403 DOI: 10.1002/jnr.24567] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/13/2019] [Accepted: 11/15/2019] [Indexed: 01/15/2023]
Abstract
Goal-directed action refers to selecting behaviors based on the expectation that they will be reinforced with desirable outcomes. It is typically conceptualized as opposing habit-based behaviors, which are instead supported by stimulus-response associations and insensitive to consequences. The prelimbic prefrontal cortex (PL) is positioned along the medial wall of the rodent prefrontal cortex. It is indispensable for action-outcome-driven (goal-directed) behavior, consolidating action-outcome relationships and linking contextual information with instrumental behavior. In this brief review, we will discuss the growing list of molecular factors involved in PL function. Ventral to the PL is the medial orbitofrontal cortex (mOFC). We will also summarize emerging evidence from rodents (complementing existing literature describing humans) that it too is involved in action-outcome conditioning. We describe experiments using procedures that quantify responding based on reward value, the likelihood of reinforcement, or effort requirements, touching also on experiments assessing food consumption more generally. We synthesize these findings with the argument that the mOFC is essential to goal-directed action when outcome value information is not immediately observable and must be recalled and inferred.
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Affiliation(s)
- Ellen P. Woon
- Graduate Program in Neuroscience
- Yerkes National Primate Research Center, Departments of Pediatrics and Psychiatry and Behavioral Sciences, Center for Translational and Social Neuroscience
| | - Michelle K. Sequeira
- Graduate Program in Neuroscience
- Yerkes National Primate Research Center, Departments of Pediatrics and Psychiatry and Behavioral Sciences, Center for Translational and Social Neuroscience
| | - Britton R. Barbee
- Yerkes National Primate Research Center, Departments of Pediatrics and Psychiatry and Behavioral Sciences, Center for Translational and Social Neuroscience
- Graduate Program in Molecular and Systems Pharmacology Emory University, Atlanta, GA
| | - Shannon L. Gourley
- Graduate Program in Neuroscience
- Yerkes National Primate Research Center, Departments of Pediatrics and Psychiatry and Behavioral Sciences, Center for Translational and Social Neuroscience
- Graduate Program in Molecular and Systems Pharmacology Emory University, Atlanta, GA
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Abstract
The investigation of hormones, brain function and behavior over the past 50 years has played a major role in elucidating how the brain and body communicate reciprocally via hormones and other mediators and how this impacts brain and body health both positively and negatively. This is illustrated here for the hippocampus, a uniquely sensitive and vulnerable brain region, study of which as a hormone target has provided a gateway into the rest of the brain. Hormone actions on the brain and hormones generated within the brain are now recognized to include not only steroid hormones but also metabolic hormones and chemical signals from bone and muscle. Moreover, steroid hormones, and some metabolic hormones, and their receptors, are generated by the brain for specific functions that synergize with effects of those circulating hormones. Hormone actions in hippocampus have revealed its capacity, and that of other brain regions, for adaptive plasticity, loss of which needs external intervention in, for example, mood disorders. Early life experiences as well as in utero and transgenerational effects are now appreciated for their lasting effects at the level of gene expression affecting the capacity for adaptive plasticity. Moreover sex differences are recognized as affecting the whole brain via both genetic and epigenetic mechanisms. The demonstrated plasticity of a healthy brain gives hope that interventions throughout the life course can ameliorate negative effects by reactivating that plasticity and the underlying epigenetic activity to produce compensatory changes in the brain with more positive consequences for the body.
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Affiliation(s)
- Bruce S McEwen
- Laboratory of Neuroendocrinology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, United States of America.
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Arango-Lievano M, Boussadia B, De Terdonck LDT, Gault C, Fontanaud P, Lafont C, Mollard P, Marchi N, Jeanneteau F. Topographic Reorganization of Cerebrovascular Mural Cells under Seizure Conditions. Cell Rep 2019; 23:1045-1059. [PMID: 29694884 DOI: 10.1016/j.celrep.2018.03.110] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 01/04/2018] [Accepted: 03/22/2018] [Indexed: 12/27/2022] Open
Abstract
Reorganization of the neurovascular unit has been suggested in the epileptic brain, although the dynamics and functional significance remain unclear. Here, we tracked the in vivo dynamics of perivascular mural cells as a function of electroencephalogram (EEG) activity following status epilepticus. We segmented the cortical vascular bed to provide a size- and type-specific analysis of mural cell plasticity topologically. We find that mural cells are added and removed from veins, arterioles, and capillaries after seizure induction. Loss of mural cells is proportional to seizure severity and vascular pathology (e.g., rigidity, perfusion, and permeability). Treatment with platelet-derived growth factor subunits BB (PDGF-BB) reduced mural cell loss, vascular pathology, and epileptiform EEG activity. We propose that perivascular mural cells play a pivotal role in seizures and are potential targets for reducing pathophysiology.
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Affiliation(s)
- Margarita Arango-Lievano
- Departments of Neuroscience & Physiology, Laboratory of Stress Hormones & Plasticity, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France.
| | - Badreddine Boussadia
- Department of Neuroscience, Laboratory of Cerebrovascular Mechanisms of Brain Disorders, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Lucile Du Trieu De Terdonck
- Departments of Neuroscience & Physiology, Laboratory of Stress Hormones & Plasticity, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Camille Gault
- Departments of Neuroscience & Physiology, Laboratory of Stress Hormones & Plasticity, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Pierre Fontanaud
- Department of Physiology, Laboratory of Networks and Rhythms in Endocrine Glands, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Chrystel Lafont
- Department of Physiology, Laboratory of Networks and Rhythms in Endocrine Glands, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Patrice Mollard
- Department of Physiology, Laboratory of Networks and Rhythms in Endocrine Glands, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France
| | - Nicola Marchi
- Department of Neuroscience, Laboratory of Cerebrovascular Mechanisms of Brain Disorders, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France.
| | - Freddy Jeanneteau
- Departments of Neuroscience & Physiology, Laboratory of Stress Hormones & Plasticity, Institut de Génomique Fonctionnelle, INSERM, CNRS, University of Montpellier, 34093 Montpellier, France.
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Sandhu MS, Gray E, Kocherginsky M, Jayaraman A, Mitchell GS, Rymer WZ. Prednisolone Pretreatment Enhances Intermittent Hypoxia-Induced Plasticity in Persons With Chronic Incomplete Spinal Cord Injury. Neurorehabil Neural Repair 2019; 33:911-921. [PMID: 31524075 DOI: 10.1177/1545968319872992] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Objective. To test the hypothesis that an anti-inflammatory corticosteroid drug enhances spinal motor plasticity induced by acute intermittent hypoxia (AIH) in persons with chronic incomplete spinal cord injury (iSCI). Methods. Fourteen subjects with incomplete spinal cord injury (ASIA level C or D; mean age = 46 years) participated in a randomized, double-blinded, crossover, and placebo-controlled study. Subjects received either 60 mg oral prednisolone or a matching placebo, 1 hour before administration of AIH (15, 60-second hypoxic exposures; fraction of inspired oxygen [FiO2] = 0.09). Changes in voluntary ankle strength, lower extremity electromyograms (EMG), and serum inflammatory biomarkers were quantified. Results. Maximal ankle plantarflexion torque was significantly higher following prednisolone + AIH versus placebo + AIH (mean difference [MD] 9, 11, and 7 newton meter [N∙m] at 30, 60, and 120 minutes post-AIH, respectively; all Ps <.02). Soleus surface EMG during maximal voluntary contraction was also significantly increased following prednisolone + AIH (MD 3.5, P = .02 vs placebo + AIH), while activity of other leg muscles remained unchanged. Individuals had significantly higher levels of the anti-inflammatory serum biomarker interleukin-10 after prednisolone versus placebo (P = .004 vs placebo + AIH). Conclusions. Pretreatment with prednisolone increased the capacity for AIH-induced functional motor plasticity, suggesting that suppression of inflammation enhances the efficacy of AIH administration in individuals with spinal cord injury. Clinical trial registration number: NCT03752749.
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Affiliation(s)
- Milap S Sandhu
- Shirley Ryan AbilityLab, Chicago, IL, USA.,Northwestern University, Chicago, IL, USA
| | | | | | - Arun Jayaraman
- Shirley Ryan AbilityLab, Chicago, IL, USA.,Northwestern University, Chicago, IL, USA
| | - Gordon S Mitchell
- Department of Physical Therapy, University of Florida, Gainesville, FL, USA
| | - William Z Rymer
- Shirley Ryan AbilityLab, Chicago, IL, USA.,Northwestern University, Chicago, IL, USA
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Linz R, Puhlmann LMC, Apostolakou F, Mantzou E, Papassotiriou I, Chrousos GP, Engert V, Singer T. Acute psychosocial stress increases serum BDNF levels: an antagonistic relation to cortisol but no group differences after mental training. Neuropsychopharmacology 2019; 44:1797-1804. [PMID: 30991416 PMCID: PMC6785147 DOI: 10.1038/s41386-019-0391-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 03/24/2019] [Accepted: 04/04/2019] [Indexed: 12/26/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is an essential facilitator of neuronal plasticity. By counteracting the adverse effects of excessive stress-induced glucocorticoid signaling, BDNF has been implicated as a resilience factor to psychopathology caused by chronic stress. Insights into the effects of acute stress on peripheral BDNF levels in humans are inconclusive. The short-term interplay between BDNF and cortisol in response to acute psychosocial stress remains unexplored. Furthermore, it is unknown whether mental training that is effective at reducing cortisol reactivity can also influence BDNF during acute stress. In the current study, we investigated serum BDNF levels during an acute psychosocial stress paradigm, the Trier Social Stress Test (TSST), in 301 healthy participants (178 women, mean age = 40.65) recruited as part of the ReSource Project, a large-scale mental training study consisting of three distinct 3-month training modules. Using a cross-sectional study design, we first examined the relationship between BDNF and salivary cortisol in a control group with no mental training. Subsequent analyses focused on differences in BDNF stress levels between control and mental training groups. We show that serum BDNF is indeed stress-sensitive, characterized by a significant post-stress increase and subsequent decline to recovery. While respective increases in BDNF and cortisol were not associated, we found two indications for an antagonistic relationship. Higher BDNF peaks after stress were associated with steeper cortisol recovery. On the other hand, the magnitude of the cortisol stress response was linked to steeper BDNF recovery after stress. BDNF levels were not modulated by any of the mental training modules. Providing novel evidence for the dynamics of BDNF and cortisol during acute stress, our findings may further inform research on the physiological mechanisms involved in stress chronification and the associated health risks.
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Affiliation(s)
- R Linz
- Research Group "Social Stress and Family Health", Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
- Department of Social Neuroscience, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
| | - L M C Puhlmann
- Research Group "Social Stress and Family Health", Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Department of Social Neuroscience, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - F Apostolakou
- Department of Clinical Biochemistry, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - E Mantzou
- First Department of Pediatrics, School of Medicine, University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - I Papassotiriou
- Department of Clinical Biochemistry, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - G P Chrousos
- First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - V Engert
- Research Group "Social Stress and Family Health", Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Department of Social Neuroscience, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - T Singer
- Department of Social Neuroscience, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Social Neuroscience Lab, Max Planck Society, Berlin, Germany
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38
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Buck JM, O'Neill HC, Stitzel JA. Developmental nicotine exposure elicits multigenerational disequilibria in proBDNF proteolysis and glucocorticoid signaling in the frontal cortices, striata, and hippocampi of adolescent mice. Biochem Pharmacol 2019; 168:438-451. [PMID: 31404529 DOI: 10.1016/j.bcp.2019.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 08/07/2019] [Indexed: 01/03/2023]
Abstract
Maternal smoking of conventional or vapor cigarettes during pregnancy, a form of developmental nicotine exposure (DNE), enhances the risk of neurodevelopmental disorders such as ADHD, autism, and schizophrenia in children. Modeling the multigenerational effects of smoking during pregnancy and nursing in the first- (F1) and second- (F2) generation adolescent offspring of oral nicotine-treated female C57BL/6J mice, we have previously reported that DNE precipitates intergenerational transmission of nicotine preference, hyperactivity and impulsivity-like behaviors, altered rhythmicity of home cage activity, corticostriatal nicotinic acetylcholine receptor and dopamine transporter dysfunction, and corticostriatal global DNA methylome deficits. In aggregate, these DNE-evoked behavioral, neuropharmacological, and epigenomic anomalies mirror fundamental etiological aspects of neurodevelopmental disorders including ADHD, autism, and schizophrenia. Expanding this line of research, the current study profiled the multigenerational neurotrophic and neuroendocrine consequences of DNE. Results reveal impaired proBDNF proteolysis as indicated by proBDNF-BDNF imbalance, downregulation of the proBDNF processing enzyme furin, atypical glucocorticoid receptor (GR) activity as implied by decreased relative nuclear GR localization, and deficient basal plasma corticosterone (CORT) levels in adolescent DNE offspring and grandoffspring. Collectively, these data recapitulate the BDNF deficits and HPA axis dysregulation characteristic of neurodevelopmental disorders such as ADHD, autism, and schizophrenia as well as the children of maternal smokers. Notably, as BDNF is a quintessential mediator of neurodevelopment, our prior findings of multigenerational DNE-induced behavioral and neuropharmacological abnormalities may stem from neurodevelopmental insults conferred by the proBDNF-BDNF imbalance detected in DNE mice. Similarly, our findings of multigenerational GR hypoactivity may contribute to the increased risk-taking behaviors and aberrant circadian rhythmicity of home cage activity that we previously documented in first- and second-generation DNE mice.
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Affiliation(s)
- Jordan M Buck
- Institute for Behavioral Genetics, University of Colorado, Boulder, United States; Department of Integrative Physiology, University of Colorado, Boulder, United States.
| | - Heidi C O'Neill
- Institute for Behavioral Genetics, University of Colorado, Boulder, United States
| | - Jerry A Stitzel
- Institute for Behavioral Genetics, University of Colorado, Boulder, United States; Department of Integrative Physiology, University of Colorado, Boulder, United States
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Persistence of learning-induced synapses depends on neurotrophic priming of glucocorticoid receptors. Proc Natl Acad Sci U S A 2019; 116:13097-13106. [PMID: 31182610 PMCID: PMC6601006 DOI: 10.1073/pnas.1903203116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Signal transduction upon activation of receptor tyrosine kinases by neurotrophins and nuclear receptors by glucocorticoids is essential for homeostasis. Phosphorylation (PO4) is one way these receptors communicate with one another to support homeostatic reactions in learning and memory. Using a newly developed glucocorticoid receptor (GR)-PO4–deficient knock-in mouse, we show that consolidation of learning-induced neuroplasticity depends on both GR-PO4 and neurotrophic signaling. Cross-talk between these pathways affects experience-dependent neuroplasticity and behavior, extending previous implications of neurotrophic priming of glucocorticoid response for adaptive plasticity to chronic stress and antidepressant response. Therefore, a disruption of cross-talk between these pathways by, for example, the misalignment of circadian glucocorticoid release and experience-dependent neurotrophic signaling may contribute to the pathophysiology of stress-related disorders. Stress can either promote or impair learning and memory. Such opposing effects depend on whether synapses persist or decay after learning. Maintenance of new synapses formed at the time of learning upon neuronal network activation depends on the stress hormone-activated glucocorticoid receptor (GR) and neurotrophic factor release. Whether and how concurrent GR and neurotrophin signaling integrate to modulate synaptic plasticity and learning is not fully understood. Here, we show that deletion of the neurotrophin brain-derived neurotrophic factor (BDNF)–dependent GR-phosphorylation (PO4) sites impairs long-term memory retention and maintenance of newly formed postsynaptic dendritic spines in the mouse cortex after motor skills training. Chronic stress and the BDNF polymorphism Val66Met disrupt the BDNF-dependent GR-PO4 pathway necessary for preserving training-induced spines and previously acquired memories. Conversely, enrichment living promotes spine formation but fails to salvage training-related spines in mice lacking BDNF-dependent GR-PO4 sites, suggesting it is essential for spine consolidation and memory retention. Mechanistically, spine maturation and persistence in the motor cortex depend on synaptic mobilization of the glutamate receptor subunit A1 (GluA1) mediated by GR-PO4. Together, these findings indicate that regulation of GR-PO4 via activity-dependent BDNF signaling is important for the formation and maintenance of learning-dependent synapses. They also define a signaling mechanism underlying these effects.
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40
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Medlej Y, Salah H, Wadi L, Saad S, Bashir B, Allam J, Atoui Z, Darwish N, Karnib N, Darwish H, Kobeissy F, Wang KKW, Hamade E, Obeid M. Lestaurtinib (CEP-701) modulates the effects of early life hypoxic seizures on cognitive and emotional behaviors in immature rats. Epilepsy Behav 2019; 92:332-340. [PMID: 30769278 DOI: 10.1016/j.yebeh.2019.01.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 11/30/2022]
Abstract
Hypoxic encephalopathy of the newborn is a major cause of long-term neurological sequelae. We have previously shown that CEP-701 (lestaurtinib), a drug with an established safety profile in children, attenuates short-term hyperexcitability and tropomyosin-related kinase B (TrkB) receptor activation in a well-established rat model of early life hypoxic seizures (HS). Here, we investigated the potential long-term neuroprotective effects of a post-HS transient CEP-701 treatment. Following exposure to global hypoxia, 10 day old male Sprague-Dawley pups received CEP-701 or its vehicle and were sequentially subjected to the light-dark box test (LDT), forced swim test (FST), open field test (OFT), Morris water maze (MWM), and the modified active avoidance (MAAV) test between postnatal days 24 and 44 (P24-44). Spontaneous seizure activity was assessed by epidural cortical electroencephalography (EEG) between P50 and 100. Neuronal density and glial fibrillary acidic protein (GFAP) levels were evaluated on histological sections in the hippocampus, amygdala, and prefrontal cortex at P100. Vehicle-treated hypoxic rats exhibited significantly increased immobility in the FST compared with controls, and post-HS CEP-701 administration reversed this HS-induced depressive-like behavior (p < 0.05). In the MAAV test, CEP-701-treated hypoxic rats were slower at learning both context-cued and tone-signaled shock-avoidance behaviors (p < 0.05). All other behavioral outcomes were comparable, and no recurrent seizures, neuronal loss, or increase in GFAP levels were detected in any of the groups. We showed that early life HS predispose to long-lasting depressive-like behaviors, and that these are prevented by CEP-701, likely via TrkB modulation. Future mechanistically more specific studies will further investigate the potential role of TrkB signaling pathway modulation in achieving neuroprotection against neonatal HS, without causing neurodevelopmental adverse effects.
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Affiliation(s)
- Yasser Medlej
- Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Houssein Salah
- Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Lara Wadi
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Sarah Saad
- Faculty of Arts and Sciences, American University of Beirut, Lebanon
| | - Bashir Bashir
- Faculty of Arts and Sciences, American University of Beirut, Lebanon
| | - Jad Allam
- Faculty of Arts and Sciences, American University of Beirut, Lebanon
| | - Zahraa Atoui
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Nora Darwish
- Faculty of Arts and Sciences, American University of Beirut, Lebanon
| | - Nabil Karnib
- Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Lebanon
| | - Hala Darwish
- Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Rafic Hariri School of Nursing, American University of Beirut, Beirut, Lebanon
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Program for Neurotrauma, Neuroproteomics, Department of Emergency Medicine, Department of Chemistry, Department of Neuroscience, and Department of Psychiatry, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Kevin K W Wang
- Program for Neurotrauma, Neuroproteomics, Department of Emergency Medicine, Department of Chemistry, Department of Neuroscience, and Department of Psychiatry, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Eva Hamade
- Department of Biochemistry, Faculty of Science, Lebanese University, Lebanon
| | - Makram Obeid
- Department of Anatomy, Cell biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Division of Child Neurology, Department of Pediatric and Adolescent Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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Ketamine improved depressive-like behaviors via hippocampal glucocorticoid receptor in chronic stress induced- susceptible mice. Behav Brain Res 2019; 364:75-84. [PMID: 30753876 DOI: 10.1016/j.bbr.2019.01.057] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/29/2019] [Accepted: 01/31/2019] [Indexed: 02/06/2023]
Abstract
Chronic stress is an important factor for depression. Most individuals recover from stress, while some develop into depression. The pathogenesis of resilience or susceptibility remains unclear. Stress activates the hypothalamic-pituitary-adrenal (HPA) axis and releases stress hormones to regulate individual response to stress. Hence, we assessed the effects of chronic social defeat stress (CSDS) on susceptible behaviors, plasma corticosterone (CORT) concentration, glucocorticoid receptor (GR) expressions in hippocampus and medial prefrontal cortex (mPFC). Mice that plasma CORT concentration is increased 2 h after single social defeat stress developed into susceptible mice after 10 d social defeat stress. The plasma CORT concentration was still higher than that of resilient mice 48 h after the last defeat stress. Mice administered CORT via drinking water showed susceptibility. Mifepristone, a GR antagonist improved susceptibility to chronic stress. Single dose ketamine treatment improved depressive-like behaviors, decreased plasma CORT concentration, rescued GR expression and nuclear translocation in the hippocampus of susceptible mice. These results suggested that abnormal CORT concentration after stress may predict susceptibility to depression in clinic. Ketamine may exert the antidepressant effect via normalizing HPA axis response and have significance in the clinic.
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Influence of pharmacological and epigenetic factors to suppress neurotrophic factors and enhance neural plasticity in stress and mood disorders. Cogn Neurodyn 2019; 13:219-237. [PMID: 31168328 DOI: 10.1007/s11571-019-09522-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 12/17/2018] [Accepted: 01/16/2019] [Indexed: 02/08/2023] Open
Abstract
Stress-induced major depression and mood disorders are characterized by behavioural abnormalities and psychiatric illness, leading to disability and immature mortality worldwide. Neurobiological mechanisms of stress and mood disorders are discussed considering recent findings, and challenges to enhance pharmacological effects of antidepressant, and mood stabilizers. Pharmacological enhancement of ketamine and scopolamine regulates depression at the molecular level, increasing synaptic plasticity in prefrontal regions. Blood-derived neurotrophic factors facilitate mood-deficit symptoms. Epigenetic factors maintain stress-resilience in hippocampal region. Regulation of neurotrophic factors blockades stress, and enhances neuronal survival though it paralyzes limbic regions. Molecular agents and neurotrophic factors also control behavioral and synaptic plasticity in addiction and stress disorders. Future research on neuronal dynamics and cellular actions can be directed to obtain the etiology of synaptic dysregulation in mood disorder and stress. For the first time, the current review contributes to the literature of synaptic plasticity representing the role of epigenetic mechanisms and glucocorticoid receptors to predict depression and anxiety in clinical conditions.
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Jeanneteau F, Borie A, Chao MV, Garabedian MJ. Bridging the Gap between Brain-Derived Neurotrophic Factor and Glucocorticoid Effects on Brain Networks. Neuroendocrinology 2019; 109:277-284. [PMID: 30572337 DOI: 10.1159/000496392] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 12/19/2018] [Indexed: 11/19/2022]
Abstract
Behavioral choices made by the brain during stress depend on glucocorticoid and brain-derived neurotrophic factor (BDNF) signaling pathways acting in synchrony in the mesolimbic (reward) and corticolimbic (emotion) neural networks. Deregulated expression of BDNF and glucocorticoid receptors in brain valuation areas may compromise the integration of signals. Glucocorticoid receptor phosphorylation upon BDNF signaling in neurons represents one mechanism underlying the integration of BDNF and glucocorticoid signals that when off balance may lay the foundation of maladaptations to stress. Here, we propose that BDNF signaling conditions glucocorticoid responses impacting neural plasticity in the mesocorticolimbic system. This provides a novel molecular framework for understanding how brain networks use BDNF and glucocorticoid signaling contingencies to forge receptive neuronal fields in temporal domains defined by behavioral experience, and in mood disorders.
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Affiliation(s)
- Freddy Jeanneteau
- Institut de Genomique Fonctionnelle, Inserm, CNRS, University of Montpellier, Montpellier, France,
| | - Amélie Borie
- Institut de Genomique Fonctionnelle, Inserm, CNRS, University of Montpellier, Montpellier, France
| | - Moses V Chao
- Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York, USA
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Maruyama NO, Mitchell NC, Truong TT, Toney GM. Activation of the hypothalamic paraventricular nucleus by acute intermittent hypoxia: Implications for sympathetic long-term facilitation neuroplasticity. Exp Neurol 2018; 314:1-8. [PMID: 30605624 DOI: 10.1016/j.expneurol.2018.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 12/03/2018] [Accepted: 12/30/2018] [Indexed: 02/07/2023]
Abstract
Exposure to acute intermittent hypoxia (AIH) induces a progressive increase of sympathetic nerve activity (SNA) that reflects a form of neuroplasticity known as sympathetic long-term facilitation (sLTF). Our recent findings indicate that activity of neurons in the hypothalamic paraventricular nucleus (PVN) contributes to AIH-induced sLTF, but neither the intra-PVN distribution nor the neurochemical identity of AIH responsive neurons has been determined. Here, awake rats were exposed to 10 cycles of AIH and c-Fos immunohistochemistry was performed to identify transcriptionally activated neurons in rostral, middle and caudal planes of the PVN. Effects of graded intensities of AIH were investigated in separate groups of rats (n = 6/group) in which inspired oxygen (O2) was reduced every 6 min from 21% to nadirs of 10%, 8% or 6%. All intensities of AIH failed to increase c-Fos counts in the caudally located lateral parvocellular region of the PVN. c-Fos counts increased in the dorsal parvocellular and central magnocellular regions, but significance was achieved only with AIH to 6% O2 (P < 0.002). By contrast, graded intensities of AIH induced graded c-Fos activation in the stress-related medial parvocellular (MP) region. Focusing on AIH exposure to 8% O2, experiments next investigated the stress-regulatory neuropeptide content of AIH-activated MP neurons. Tissue sections immunostained for corticotropin-releasing hormone (CRH) or arginine vasopressin (AVP) revealed a significantly greater number of neurons stained for CRH than AVP (P < 0.0001), though AIH induced expression of c-Fos in a similar fraction (~14%) of each neurochemical class. Amongst AIH-activated MP neurons, ~30% stained for CRH while only ~2% stained for AVP. Most AIH-activated CRH neurons (~82%) were distributed in the rostral one-half of the PVN. Results indicate that AIH recruits CRH, but not AVP, neurons in rostral to middle levels of the MP region of PVN, and raise the possibility that these CRH neurons may be a substrate for AIH-induced sLTF neuroplasticity.
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Affiliation(s)
- Nadia Oliveira Maruyama
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Nathan C Mitchell
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Tamara T Truong
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Glenn M Toney
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; Center for Biomedical Neuroscience, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
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Barfield ET, Gourley SL. Prefrontal cortical trkB, glucocorticoids, and their interactions in stress and developmental contexts. Neurosci Biobehav Rev 2018; 95:535-558. [PMID: 30477984 PMCID: PMC6392187 DOI: 10.1016/j.neubiorev.2018.10.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/14/2018] [Accepted: 10/23/2018] [Indexed: 02/07/2023]
Abstract
The tropomyosin/tyrosine receptor kinase B (trkB) and glucocorticoid receptor (GR) regulate neuron structure and function and the hormonal stress response. Meanwhile, disruption of trkB and GR activity (e.g., by chronic stress) can perturb neuronal morphology in cortico-limbic regions implicated in stressor-related illnesses like depression. Further, several of the short- and long-term neurobehavioral consequences of stress depend on the developmental timing and context of stressor exposure. We review how the levels and activities of trkB and GR in the prefrontal cortex (PFC) change during development, interact, are modulated by stress, and are implicated in depression. We review evidence that trkB- and GR-mediated signaling events impact the density and morphology of dendritic spines, the primary sites of excitatory synapses in the brain, highlighting effects in adolescents when possible. Finally, we review the role of neurotrophin and glucocorticoid systems in stress-related metaplasticity. We argue that better understanding the long-term effects of developmental stressors on PFC trkB, GR, and related factors may yield insights into risk for chronic, remitting depression and related neuropsychiatric illnesses.
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Affiliation(s)
- Elizabeth T Barfield
- Department of Pediatrics, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Graduate Program in Neuroscience, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Yerkes National Primate Research Center, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Department of Psychiatry and Behavioral Sciences, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA.
| | - Shannon L Gourley
- Department of Pediatrics, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Graduate Program in Neuroscience, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Yerkes National Primate Research Center, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Department of Psychiatry and Behavioral Sciences, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA; Molecular and Systems Pharmacology Program, Emory University, 954 Gatewood Rd. NE, Atlanta, GA, 30329, USA.
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Lam VY, Raineki C, Ellis L, Yu W, Weinberg J. Interactive effects of prenatal alcohol exposure and chronic stress in adulthood on anxiety-like behavior and central stress-related receptor mRNA expression: Sex- and time-dependent effects. Psychoneuroendocrinology 2018; 97:8-19. [PMID: 29990678 PMCID: PMC6424330 DOI: 10.1016/j.psyneuen.2018.06.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/18/2018] [Accepted: 06/22/2018] [Indexed: 01/24/2023]
Abstract
Children and adults prenatally exposed to alcohol show higher rates of mental health problems than unexposed individuals, with depression and anxiety being among the more commonly encountered disorders. Previous studies in rats showed that prenatal alcohol exposure (PAE) can indeed increase depressive- and anxiety-like behavior in adulthood; however, depression and anxiety are often observed in the context of stress and/or a dysregulated stress response system (the hypothalamic-pituitary-adrenal [HPA] axis). PAE can dysregulate the HPA axis, resulting in hyperresponsivity to stress. In turn, this may predispose individuals prenatally exposed to alcohol to the adverse effects of stress compared to unexposed individuals. We have shown previously that PAE animals may be more sensitive to the effects of chronic stress on behavior, showing increased anxiety- and depressive-like behavior following chronic unpredictable stress (CUS) exposure. Here, we investigated the independent and interactive effects of PAE and adult CUS on anxiety-like behavior and receptor systems (corticotropin-releasing hormone receptor type 1 [CRHR1], mineralocorticoid receptor [MR], and glucocorticoid receptor [GR]), and underlying stress and emotional regulation, and whether exposure to CUS differentially results in immediate or delayed effects. Adult male and female offspring from PAE, pair-fed (PF), and ad libitum-fed control (C) dams were exposed to either 10 days of CUS or left undisturbed. Behavioral testing began 1 or 14 days post-CUS, and brains were collected following testing. Anxiety-like behaviors were evaluated using the open field, elevated plus maze and dark-light emergence tests. CRHR1, MR, and GR mRNA expression were assessed in the medial prefrontal cortex (mPFC), amygdala, and hippocampal formation, brain areas key to both stress and emotional regulation. We found that PAE differentially increased anxiety-like behavior and altered GR mRNA in males and females compared to their control counterparts. Furthermore, depending on the timing of testing, CUS unmasked alterations in GR and CRHR1 mRNA expression in the mPFC and amygdala in PAE males, and MR mRNA in the hippocampal formation in PAE females compared to their C counterparts. Overall, the changes observed in these receptor systems may underlie the increase in anxiety-like behavior following PAE and CUS exposure in adulthood. That CUS differentially affected brain and behavioral outcome of PAE and C animals, and did so in a sexually-dimorphic manner, has important implications for understanding the etiology of psychopathology in individuals prenatally exposed to alcohol.
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Affiliation(s)
- Vivian Y.Y. Lam
- Corresponding author at: Department of Cellular and Physiological Sciences, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada. (V.Y.Y. Lam)
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Xingnao Jieyu Decoction Ameliorates Poststroke Depression through the BDNF/ERK/CREB Pathway in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:5403045. [PMID: 30410555 PMCID: PMC6206522 DOI: 10.1155/2018/5403045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/26/2018] [Indexed: 02/06/2023]
Abstract
Background. The neurotrophic pathway regulated by the brain-derived neurotrophic factor (BDNF) plays a crucial role in the pathogenesis of poststroke depression (PSD). How the traditional Chinese medicine compound preparation Xingnao Jieyu (XNJY) decoction regulates the neurotrophic pathway to treat PSD is unclear. Objective. This study aimed to investigate the antidepressant effect of XNJY decoction on a rat model of PSD and the molecular mechanism intervening in the neurotrophic pathway. Methods. After a middle cerebral artery occlusion model was established, chronic unpredictable mild stress was applied for 21 days to prepare a PSD model. XNJY groups and a fluoxetine (Flu) group of rats were intragastrically administered with XNJY and Flu, respectively, for 21 consecutive days. Depressive-like behaviors, including sucrose preference, open field test, and forced swimming test, were assessed. The survival and apoptosis of cortical and hippocampal neurons were evaluated by immunofluorescence assay and TUNEL staining. The contents of serotonin (5-HT), norepinephrine (NE), and BDNF in the cortex and hippocampus were determined by ELISA. The protein levels of BDNF, p-ERK/ERK, and p-CREB/CREB in the cortical and hippocampal regions were tested by Western blot. Results. The depressive-like behaviors markedly improved after XNJY and Flu treatment. XNJY and Flu promoted neuronal survival and protected cortical and hippocampal neurons from apoptosis. XNJY also increased the contents of 5-HT, NE, and BDNF and recovered the protein levels of p-ERK/ERK, p-CREB/CREB, and BDNF in the cortical and hippocampal regions. Conclusion. These results indicated that the XNJY decoction exerts an obvious antidepressant effect, which may be due to the regulation of the BDNF/ERK/CREB signaling pathway.
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Singer W, Manthey M, Panford-Walsh R, Matt L, Geisler HS, Passeri E, Baj G, Tongiorgi E, Leal G, Duarte CB, Salazar IL, Eckert P, Rohbock K, Hu J, Strotmann J, Ruth P, Zimmermann U, Rüttiger L, Ott T, Schimmang T, Knipper M. BDNF-Live-Exon-Visualization (BLEV) Allows Differential Detection of BDNF Transcripts in vitro and in vivo. Front Mol Neurosci 2018; 11:325. [PMID: 30319348 PMCID: PMC6170895 DOI: 10.3389/fnmol.2018.00325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/22/2018] [Indexed: 12/16/2022] Open
Abstract
Bdnf exon-IV and exon-VI transcripts are driven by neuronal activity and are involved in pathologies related to sleep, fear or memory disorders. However, how their differential transcription translates activity changes into long-lasting network changes is elusive. Aiming to trace specifically the network controlled by exon-IV and -VI derived BDNF during activity-dependent plasticity changes, we generated a transgenic reporter mouse for B DNF- l ive- e xon- v isualization (BLEV), in which expression of Bdnf exon-IV and -VI can be visualized by co-expression of CFP and YFP. CFP and YFP expression was differentially activated and targeted in cell lines, primary cultures and BLEV reporter mice without interfering with BDNF protein synthesis. CFP and YFP expression, moreover, overlapped with BDNF protein expression in defined hippocampal neuronal, glial and vascular locations in vivo. So far, activity-dependent BDNF cannot be explicitly monitored independent of basal BDNF levels. The BLEV reporter mouse therefore provides a new model, which can be used to test whether stimulus-induced activity-dependent changes in BDNF expression are instrumental for long-lasting plasticity modifications.
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Affiliation(s)
- Wibke Singer
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Marie Manthey
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Rama Panford-Walsh
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lucas Matt
- Department of Pharmacology, Institute of Pharmacy, Toxicology and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Hyun-Soon Geisler
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Eleonora Passeri
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Gabriele Baj
- B.R.A.I.N. Centre for Neuroscience, Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Enrico Tongiorgi
- B.R.A.I.N. Centre for Neuroscience, Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Graciano Leal
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Carlos B. Duarte
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Ivan L. Salazar
- Centre for Neuroscience and Cell Biology (CNC), Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Philipp Eckert
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Karin Rohbock
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Jing Hu
- Centre for Integrative Neuroscience (CIN), University of Tübingen, Tübingen, Germany
| | - Jörg Strotmann
- Department of Physiology, Institute of Physiology, University of Hohenheim, Stuttgart, Germany
| | - Peter Ruth
- Department of Pharmacology, Institute of Pharmacy, Toxicology and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Ulrike Zimmermann
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Thomas Ott
- Transgenic Facility Tübingen, University of Tübingen, Tübingen, Germany
| | - Thomas Schimmang
- Instituto de Biologíay Genética Molecular, Universidad de Valladolid y Consejo Superior de Investigaciones Científicas, Valladolid, Spain
| | - Marlies Knipper
- Department of Otolaryngology, Tübingen Hearing Research Centre (THRC), Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
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49
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Dai TT, Wang B, Xiao ZY, You Y, Tian SW. Apelin-13 Upregulates BDNF Against Chronic Stress-induced Depression-like Phenotypes by Ameliorating HPA Axis and Hippocampal Glucocorticoid Receptor Dysfunctions. Neuroscience 2018; 390:151-159. [PMID: 30170158 DOI: 10.1016/j.neuroscience.2018.08.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/10/2018] [Accepted: 08/20/2018] [Indexed: 01/08/2023]
Abstract
Localization of apelin and its receptor APJ in limbic structures such as the hippocampus suggests potential involvement of apelin/APJ signaling in stress-related emotional responses. We have recently reported that apelin-13 exerts antidepressant-like actions in acute stressed rats, and that the hippocampus is a critical brain region mediating its actions. However, the neural mechanism underling antidepressant-like actions of apelin-13 is still largely unknown. The aim of the present study is to determine whether apelin-13 ameliorates chronic water-immersion restraint stress (CWIRS)-induced depression-like phenotypes and its neural mechanism in rats. Here, we report that CWIRS exposure leaded to upregulation of apelin/APJ signaling in the hippocampus. Apelin-13 ameliorated CWIRS-induced depression-like phenotypes including hedonic-like deficit and behavioral despairs. Moreover, apelin-13 ameliorated hypothalamic-pituitary-adrenal (HPA) axis hyperactivity, and hippocampal BDNF expression deficit and glucocorticoid receptor (GR) nucleus translocation hypoactivity in chronic stressed rats. Finally, apelin-13-mediated effects were blocked by the selective TrkB receptor antagonist ANA-12. These results suggest that apelin-13 upregulates BDNF against chronic stress-induced depression-like phenotypes by ameliorating HPA axis and hippocampal GR dysfunctions.
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Affiliation(s)
- Ting-Ting Dai
- Department of Physiology, College of Medicine, University of South China, Hengyang, Hunan 421001, PR China
| | - Bo Wang
- Department of Anesthesiology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, PR China
| | - Zhi-Yong Xiao
- Department of Anesthesiology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, PR China
| | - Yong You
- Department of Neurology, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, PR China
| | - Shao-Wen Tian
- Department of Physiology, College of Medicine, University of South China, Hengyang, Hunan 421001, PR China.
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50
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Matt L, Eckert P, Panford-Walsh R, Geisler HS, Bausch AE, Manthey M, Müller NIC, Harasztosi C, Rohbock K, Ruth P, Friauf E, Ott T, Zimmermann U, Rüttiger L, Schimmang T, Knipper M, Singer W. Visualizing BDNF Transcript Usage During Sound-Induced Memory Linked Plasticity. Front Mol Neurosci 2018; 11:260. [PMID: 30127717 PMCID: PMC6089339 DOI: 10.3389/fnmol.2018.00260] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/12/2018] [Indexed: 12/14/2022] Open
Abstract
Activity-dependent BDNF (brain-derived neurotrophic factor) expression is hypothesized to be a cue for the context-specificity of memory formation. So far, activity-dependent BDNF cannot be explicitly monitored independently of basal BDNF levels. We used the BLEV (BDNF-live-exon-visualization) reporter mouse to specifically detect activity-dependent usage of Bdnf exon-IV and -VI promoters through bi-cistronic co-expression of CFP and YFP, respectively. Enriching acoustic stimuli led to improved peripheral and central auditory brainstem responses, increased Schaffer collateral LTP, and enhanced performance in the Morris water maze. Within the brainstem, neuronal activity was increased and accompanied by a trend for higher expression levels of Bdnf exon-IV-CFP and exon-VI-YFP transcripts. In the hippocampus BDNF transcripts were clearly increased parallel to changes in parvalbumin expression and were localized to specific neurons and capillaries. Severe acoustic trauma, in contrast, elevated neither Bdnf transcript levels, nor auditory responses, parvalbumin or LTP. Together, this suggests that critical sensory input is essential for recruitment of activity-dependent auditory-specific BDNF expression that may shape network adaptation.
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Affiliation(s)
- Lucas Matt
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Philipp Eckert
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Rama Panford-Walsh
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Hyun-Soon Geisler
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Anne E Bausch
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Marie Manthey
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Nicolas I C Müller
- Animal Physiology Group, Department of Biology, University of Kaiserslautern, Kaiserslautern, Germany
| | - Csaba Harasztosi
- Section of Physiological Acoustics and Communication, Department of Otolaryngology, Tübingen Hearing Research Center, University of Tübingen, Tübingen, Germany
| | - Karin Rohbock
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Peter Ruth
- Department of Pharmacology, Institute of Pharmacy, Toxicology, and Clinical Pharmacy, University of Tübingen, Tübingen, Germany
| | - Eckhard Friauf
- Animal Physiology Group, Department of Biology, University of Kaiserslautern, Kaiserslautern, Germany
| | - Thomas Ott
- Transgenic Facility Tübingen, University of Tübingen, Tübingen, Germany
| | - Ulrike Zimmermann
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Lukas Rüttiger
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Thomas Schimmang
- Instituto de Biologíay Genética Molecular, Universidad de Valladolid, Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Marlies Knipper
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
| | - Wibke Singer
- Department of Otolaryngology, Tübingen Hearing Research Centre, Molecular Physiology of Hearing, University of Tübingen, Tübingen, Germany
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