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Gao S, Zhang L, Wang X, Li R, Han L, Xiong X, Jiang Q, Cheng D, Xiao X, Li H, Yang J. A terrified-sound stress causes cognitive impairment in female mice by impairing neuronal plasticity. Brain Res 2023; 1812:148419. [PMID: 37217110 DOI: 10.1016/j.brainres.2023.148419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 05/24/2023]
Abstract
Stress is an important environmental factor affecting mental health that cannot be ignored. Moreover, due to the great physiological differences between males and females, the effects of stress may vary by sex. Previous studies have shown that terrified-sound stress, meaning exposed mice to the recorded vocalizations in response to the electric shock by their kind to induce psychological stress, can cause cognitive impairment in male. In the study, we investigated the effects of the terrified-sound stress on adult female mice. METHODS 32 adults female C57BL/6 mice were randomly divided into control (n = 16) and stress group (n = 16). Sucrose preference test (SPT)was carried out to evaluate the depressive-like behavior. Using Open field test (OFT) to evaluate locomotor and exploratory alterations in mice. Spatial learning and memory ability were measured in Morris Water maze test (MWM), Golgi staining and western blotting showed dendritic remodeling after stress. In addition, serum hormone quantifications were performed by ELISA. RESULTS we found the sucrose preference of stress group was significantly decreased (p < 0.05) compared with control group; the escape latency of the stress group was significantly prolonged (p < 0.05), the total swimming distance and the number of target crossings(p < 0.05) were significantly increased (p < 0.05) in MWM; Endocrine hormone, Testosterone (T) (p < 0.05), GnRH (p < 0.05), FSH and LH levels was decreased; Golgi staining and western blotting showed a significant decrease in dendritic arborization, spine density and synaptic plasticity related proteins PSD95 and BDNF in the stress group. CONCLUSION Terrified-sound stress induced depressive-like behaviors, locomotor and exploratory alterations. And impaired cognitive by altering dendritic remodeling and the expression of synaptic plasticity-related proteins. However, females are resilient to terrified-sound stress from a hormonal point of view.
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Affiliation(s)
- Shanfeng Gao
- Department of Otolaryngology and Head Neck, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China; Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Lingyu Zhang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Xia Wang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Rufeng Li
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Lin Han
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Xiaofan Xiong
- Department of Tumor and Immunology in Precision Medicine Institute, Western China Science and Technology Innovation Port, Xi'an 710004, PR China
| | - Qingchen Jiang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Daxin Cheng
- Department of Neonatology, Shaanxi Provincial People's Hospital, Xi'an 710068, PR China
| | - Xuan Xiao
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Huajing Li
- Department of Otolaryngology and Head Neck, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Juan Yang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, Xi'an 710061, PR China.
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Beckers A, Bergmans S, Van Dyck A, Moons L. Analysis of Axonal Regrowth and Dendritic Remodeling After Optic Nerve Crush in Adult Zebrafish. Methods Mol Biol 2023; 2636:163-90. [PMID: 36881300 DOI: 10.1007/978-1-0716-3012-9_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Neurodegenerative diseases and central nervous system (CNS) injuries are frequently characterized by axonal damage, as well as dendritic pathology. In contrast to mammals, adult zebrafish show a robust regeneration capacity after CNS injury and form the ideal model organism to further unravel the underlying mechanisms for both axonal and dendritic regrowth upon CNS damage. Here, we first describe an optic nerve crush injury model in adult zebrafish, an injury paradigm that inflicts de- and regeneration of the axons of retinal ganglion cells (RGCs), but also triggers RGC dendrite disintegration and subsequent recovery in a stereotyped and timed process. Next, we outline protocols for quantifying axonal regeneration and synaptic recovery in the brain, using retro- and anterograde tracing experiments and an immunofluorescent staining for presynaptic compartments, respectively. Finally, methods to analyze RGC dendrite retraction and subsequent regrowth in the retina are delineated, using morphological measurements and immunofluorescent staining for dendritic and synaptic markers.
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He JG, Zhou HY, Xue SG, Lu JJ, Xu JF, Zhou B, Hu ZL, Wu PF, Long LH, Ni L, Jin Y, Wang F, Chen JG. Transcription Factor TWIST1 Integrates Dendritic Remodeling and Chronic Stress to Promote Depressive-like Behaviors. Biol Psychiatry 2021; 89:615-626. [PMID: 33190845 DOI: 10.1016/j.biopsych.2020.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Deficiency in neuronal structural plasticity is involved in the development of major depressive disorder. TWIST1, a helix-loop-helix transcription factor that is essential for morphogenesis and organogenesis, is normally expressed at low levels in mature neurons. However, it is poorly understood what role TWIST1 plays in the brain and whether it is involved in the pathophysiology of depression. METHODS Depressive-like behaviors in C57BL/6J mice were developed by chronic social defeat stress. Genetic and pharmacological approaches were used to investigate the role of the TWIST1-miR-214-PPAR-δ signaling pathway in depressive-like behaviors. Molecular biological and morphological studies were performed to define the molecular mechanisms downstream of TWIST1. RESULTS The expression of TWIST1 was positively correlated with depressive behaviors in humans and mice. Chronic stress elevated TWIST1 expression in the medial prefrontal cortex of mice, which was reversed by fluoxetine treatment. While the overexpression of TWIST1 increased susceptibility to stress, the knockdown of TWIST1 prevented the defective morphogenesis of dendrites of pyramidal neurons in layer II/III of the medial prefrontal cortex and alleviated depressive-like behaviors. Mechanistically, this prodepressant property of TWIST1 was mediated, at least in part, through the repression of miR-214-PPAR-δ signaling and mitochondrial function, which was also mimicked by genetic and pharmacological inhibition of PPAR-δ. CONCLUSIONS These results suggest that TWIST1 in the medial prefrontal cortex mediates chronic stress-induced dendritic remodeling and facilitates the occurrence of depressive-like behavior, providing new information for developing drug targets for depression therapy.
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Affiliation(s)
- Jin-Gang He
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Hai-Yun Zhou
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Shi-Ge Xue
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jia-Jing Lu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jun-Feng Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Bin Zhou
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Zhuang-Li Hu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Key Laboratory for Drug Target Research and Pharmacodynamic Evaluation of Hubei Province, Wuhan, People's Republic of China
| | - Peng-Fei Wu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Key Laboratory for Drug Target Research and Pharmacodynamic Evaluation of Hubei Province, Wuhan, People's Republic of China
| | - Li-Hong Long
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Key Laboratory for Drug Target Research and Pharmacodynamic Evaluation of Hubei Province, Wuhan, People's Republic of China
| | - Lan Ni
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - You Jin
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Laboratory of Neuropsychiatric Diseases, Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Key Laboratory for Drug Target Research and Pharmacodynamic Evaluation of Hubei Province, Wuhan, People's Republic of China; Key Laboratory of Neurological Diseases, Ministry of Education of China, Wuhan, People's Republic of China.
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Research Center for Depression, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Laboratory of Neuropsychiatric Diseases, Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Key Laboratory for Drug Target Research and Pharmacodynamic Evaluation of Hubei Province, Wuhan, People's Republic of China; Key Laboratory of Neurological Diseases, Ministry of Education of China, Wuhan, People's Republic of China.
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Ghalandari-Shamami M, Nourizade S, Barati M, Yousefi B, Pashayi M, Ali Vafaei A, Kokhaei P, Rashidy-Pour A. Exercise and crocin prevent adolescent-stress induced impairment of spatial navigation and dendritic retraction in the hippocampal CA3 area in adult male rats. Brain Res 2021; 1754:147274. [PMID: 33422526 DOI: 10.1016/j.brainres.2020.147274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 10/22/2022]
Abstract
Adolescent chronic stress has been shown to induce functional, biochemical and morphological modifications of the hippocampus, leading to stress-related disorders in adulthood. The present study investigated the effects of exercise, crocin and their combination on spatial learning and memory impairment and dendritic retraction of the CA3 pyramidal neurons induced by chronic adolescent stress in adult male rats. Rats were exposed to restraint stress 2 h/day for 10 days during postnatal days (PNDs) 30-40. Following this period, separate groups of animals were treated with crocin (25 and 50 mg/kg), exposed to running wheel, and or received the combined treatment during PNDs 41-55. Following the interventions, plasma levels of corticosterone, spatial learning and memory, apical dendritic length of CA3 pyramidal neurons and BDNF levels in the CA3 area were assessed. Findings showed that adolescent stress significantly increased corticosterone levels and caused a tendency to reduce CA3 BDNF levels. Adolescent stress also impaired spatial learning and memory, and retracted apical dendritic length of CA3 pyramidal neurons. Crocin, voluntary exercise, and their combination recovered stress-induced spatial learning and impairment and CA3 pyramidal neurons dendritic length retraction. All treatments also reduced significantly corticosterone levels and enhanced CA3 BDNF levels in the stress groups. Finally, these treatments even increased apical dendritic length of CA3 pyramidal neurons in the non-stress groups. These findings indicate that detrimental effects of adolescent stress on cognitive function and hippocampal morphology in adulthood could be restored by early interventions with physical activity and crocin treatment during adolescent period.
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Affiliation(s)
- Mohadeseh Ghalandari-Shamami
- Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran; Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Shahla Nourizade
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Mehdi Barati
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Behpour Yousefi
- Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Mehrnush Pashayi
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Parviz Kokhaei
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran.
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Shen W, Jin L, Zhu A, Lin Y, Pan G, Zhou S, Cheng J, Zhang J, Tu F, Liu C, Xie Q, Chen X. Treadmill exercise enhances synaptic plasticity in the ischemic penumbra of MCAO mice by inducing the expression of Camk2a via CYFIP1 upregulation. Life Sci 2021; 270:119033. [PMID: 33497737 DOI: 10.1016/j.lfs.2021.119033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/29/2020] [Accepted: 01/01/2021] [Indexed: 10/22/2022]
Abstract
AIMS Physical exercise is beneficial to the recovery of patients with ischemic stroke. However, the underlying mechanism by which exercise promotes dendritic remodeling and synaptic plasticity is still obscure. This study explored the mechanism by which treadmill exercise enhances synaptic plasticity and dendritic remodeling in the ischemic penumbra. MAIN METHODS A middle cerebral artery occlusion (MCAO) model was generated in C57BL/6 mice, and lentivirus-mediated cytoplasmic FMRP-associated protein 1 (CYFIP1) shRNA expression was utilized to confirm the role of CYFIP1 in the exercise-induced increase in synaptic plasticity and dendritic remodeling. Neurological deficits were measured using the Zea Longa scale. Hematoxylin-eosin (H&E) staining and Nissl staining were performed to assess cerebral ischemic injury. Golgi-Cox staining was used to observe changes in dendritic remodeling and synaptic plasticity. Transmission electron microscopy (TEM) was performed to observe the synaptic ultrastructure. Molecular mechanisms were explored using immunofluorescence staining and western blotting. KEY FINDINGS Treadmill training enhanced synaptic plasticity in the penumbra. Additionally, we observed significant increases in the expression of CYFIP1 and calcium/calmodulin-dependent kinase 2a (Camk2a); enhanced neurological recovery and a decreased infarct volume. However, the injection of a lentivirus containing CYFIP1 shRNA into the lateral ventricle exerted negative effects on synaptic plasticity. Moreover, the exercise-induced neuroprotective effects were abolished by lentivirus-mediated CYFIP1 shRNA expression, consistent with the downregulation of Camk2a expression and the deterioration of neurological function. SIGNIFICANCE Treadmill training enhances synaptic plasticity and dendritic remodeling in the ischemic penumbra by inducing the expression of Camk2a via upregulation of CYFIP1.
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Affiliation(s)
- Weimin Shen
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Lingqin Jin
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Anqi Zhu
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Yao Lin
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Guoyuan Pan
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Shanshan Zhou
- Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingyan Cheng
- The Second Hospital Affiliated to Anhui University of Chinese Medicine, No.300, Shouchun Road, Hefei, Anhui, China
| | - Jieqiong Zhang
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Fengxia Tu
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Chan Liu
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China
| | - Qingfeng Xie
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China.
| | - Xiang Chen
- Physical Medicine and Rehabilitation Center, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No. 109, Xueyuanxi Road, Wenzhou, Zhejiang, China.
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Syc-Mazurek SB, Libby RT. Axon injury signaling and compartmentalized injury response in glaucoma. Prog Retin Eye Res 2019; 73:100769. [PMID: 31301400 DOI: 10.1016/j.preteyeres.2019.07.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 07/05/2019] [Accepted: 07/09/2019] [Indexed: 12/19/2022]
Abstract
Axonal degeneration is an active, highly controlled process that contributes to beneficial processes, such as developmental pruning, but also to neurodegeneration. In glaucoma, ocular hypertension leads to vision loss by killing the output neurons of the retina, the retinal ganglion cells (RGCs). Multiple processes have been proposed to contribute to and/or mediate axonal injury in glaucoma, including: neuroinflammation, loss of neurotrophic factors, dysregulation of the neurovascular unit, and disruption of the axonal cytoskeleton. While the inciting injury to RGCs in glaucoma is complex and potentially heterogeneous, axonal injury is ultimately thought to be the key insult that drives glaucomatous neurodegeneration. Glaucomatous neurodegeneration is a complex process, with multiple molecular signals contributing to RGC somal loss and axonal degeneration. Furthermore, the propagation of the axonal injury signal is complex, with injury triggering programs of degeneration in both the somal and axonal compartment. Further complicating this process is the involvement of multiple cell types that are known to participate in the process of axonal and neuronal degeneration after glaucomatous injury. Here, we review the axonal signaling that occurs after injury and the molecular signaling programs currently known to be important for somal and axonal degeneration after glaucoma-relevant axonal injuries.
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Affiliation(s)
- Stephanie B Syc-Mazurek
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY, USA; Neuroscience Graduate Program, University of Rochester Medical Center, Rochester, NY, USA
| | - Richard T Libby
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY, USA; Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA; The Center for Visual Sciences, University of Rochester, Rochester, NY, USA.
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7
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Moradi-Kor N, Ghanbari A, Rashidipour H, Yousefi B, Bandegi AR, Rashidy-Pour A. Beneficial effects of Spirulina platensis, voluntary exercise and environmental enrichment against adolescent stress induced deficits in cognitive functions, hippocampal BDNF and morphological remolding in adult female rats. Horm Behav 2019; 112:20-31. [PMID: 30917909 DOI: 10.1016/j.yhbeh.2019.03.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 03/16/2019] [Accepted: 03/22/2019] [Indexed: 11/21/2022]
Abstract
Chronic exposure to stress during adolescent period has been demonstrated to impair cognitive functions and the dendritic morphology of pyramidal neurons in the rat hippocampal CA3 area. The present study investigated the combined protective effects of Spirulina platensis (SP), a supplement made from blue-green algae with neuroprotective properties, voluntary exercise (EX) and environmental enrichment (EE) against cognitive deficits, alternations in hippocampal BDNF levels, and abnormal neuronal remodeling in adult female rats (PND 60) induced by exposure to chronic restraint stress during adolescent period (PND 30-40). Rats were exposed to restraint stress (2 h/day for 10 days, PND 30-40). Then, the animals were subjected to treatment with SP (200 mg/kg/day), EX, EE and the combined treatments (SP + EX, and SP + EE) between PND 41 and 55 of age. Following the interventions, spatial learning and memory, passive avoidance performance, hippocampal dendritic morphology and BDNF levels were assessed. Results showed that plasma corticosterone levels increased at PND 40 and remained elevated at PND 55 and 70 in the stressed rats. Stressed rats showed deficits in spatial learning and memory and passive avoidance performance, decreased BDNF levels in the hippocampus, and reduced apical dendritic length and branch points of the CA3 pyramidal neurons. These deficits were alleviated by the SP, EX and EE, and the combined treatments, which accompanied with a decline in serum corticosterone in stressed animals. Some treatments even enhanced cognitive functions, and BDNF levels and neuroanatomical remodeling in the hippocampus of non-stressed animals. Our findings provide important evidences that physical activity, exposure to EE, and the SP treatment during adolescent period can protect against adolescent stress induced behavioral, biochemical and neuroanatomical impairments in adulthood.
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MESH Headings
- Animals
- Animals, Newborn
- Avoidance Learning/drug effects
- Avoidance Learning/physiology
- Brain-Derived Neurotrophic Factor/metabolism
- Cell Extracts/pharmacology
- Cognition/drug effects
- Cognition/physiology
- Cognition Disorders/etiology
- Cognition Disorders/pathology
- Cognition Disorders/physiopathology
- Cognition Disorders/prevention & control
- Conditioning, Psychological/drug effects
- Conditioning, Psychological/physiology
- Female
- Hippocampus/drug effects
- Hippocampus/metabolism
- Hippocampus/pathology
- Hippocampus/physiopathology
- Memory/drug effects
- Memory/physiology
- Neuronal Plasticity/drug effects
- Physical Conditioning, Animal/physiology
- Rats
- Rats, Wistar
- Restraint, Physical/physiology
- Restraint, Physical/psychology
- Sexual Maturation/drug effects
- Sexual Maturation/physiology
- Social Environment
- Spatial Learning/drug effects
- Spirulina/chemistry
- Stress, Psychological/complications
- Stress, Psychological/metabolism
- Stress, Psychological/pathology
- Stress, Psychological/psychology
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Affiliation(s)
- Nasroallah Moradi-Kor
- Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran; Laboratory of Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Ghanbari
- Laboratory of Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Hadi Rashidipour
- School of Veterinary Medicine, Islamic Azad University, Garmsar Branch, Garmsar, Iran
| | - Behpour Yousefi
- Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ahmad Reza Bandegi
- Laboratory of Endocrine Research, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Rashidy-Pour
- Laboratory of Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
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8
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RaiseAbdullahi P, Vafaei AA, Ghanbari A, Dadkhah M, Rashidy-Pour A. Time-dependent protective effects of morphine against behavioral and morphological deficits in an animal model of posttraumatic stress disorder. Behav Brain Res 2019; 364:19-28. [PMID: 30753875 DOI: 10.1016/j.bbr.2019.01.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/28/2019] [Accepted: 01/31/2019] [Indexed: 12/21/2022]
Abstract
Post-traumatic stress disorder (PTSD) arises after an individual has experienced a major traumatic event. Recent evidence suggests that acute morphine treatment may serve as a strategy to reduce PTSD development. In the present study, we investigated the time-dependent effects of morphine on behavioral and morphological deficits induced by the single prolonged stress (SPS), an experimental model of PTSD, in adult male rats. The rats were exposed to SPS (restraint for 2 h, forced swimming for 20 min, and ether anesthesia), and kept undistributed for 11 days. Morphine was injected immediately, 6, 12 and 24 h after SPS. Anxiety profile was evaluated using the elevated plus maze11 days after SPS. Then, animals were conditioned in a fear conditioning task and extinction training was performed on days 1, 2, 3, 4 and 11 after fear conditioning which followed by morphological assessments in the medial prefrontal cortex (mPFC). SPS rats showed increased anxiety levels and impaired contextual fear extinction retention. SPS also decreased dendritic length in the infra-limbic (IL) and dendritic spines in the IL and pre-limbic (PL) regions of the mPFC. Conversely, morphine treatment 6, 12 and 24 h but not immediately after SPS significantly improved anxiety-like behaviors, fear extinction, increased dendritic length, and spines in the mPFC. Morphine-induced much stronger response when injected 24 h after the SPS, and this effect was blocked by naloxone. Our findings show that morphine within a restricted time window selectively reversed the SPS-induced deficits in anxiety profile, fear extinction, and dendritic morphology in the mPFC. Finally, these findings suggest that the time point of morphine injection following a traumatic event is an important determinant of the full therapeutic effect of morphine against PTSD.
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Affiliation(s)
- Payman RaiseAbdullahi
- Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran; Laboratoryof Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Laboratoryof Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Ghanbari
- Laboratoryof Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Masoomeh Dadkhah
- Research Centers Development and Coordination Office, Deputy of Research& Technology, Ardabil University of Medical Sciences Ardabil, Iran
| | - Ali Rashidy-Pour
- Laboratoryof Learning and Memory, Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran; Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
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Sharma HR, Thakur MK. Correlation of ERα/ERβ expression with dendritic and behavioural changes in CUMS mice. Physiol Behav 2015; 145:71-83. [PMID: 25837835 DOI: 10.1016/j.physbeh.2015.03.041] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 02/24/2015] [Accepted: 03/24/2015] [Indexed: 11/16/2022]
Abstract
In response to chronic stress, oestrogen receptor (ER)α acts as an anxiogenic agent as opposed to ERβ which predominantly acts as an anxiolytic agent. These properties of ER play an important role in mediating anxiety- and depression-like behaviour and physiological responses. However, the precise underlying mechanism remains unclear. In particular, not much is known about the expression of ERα and ERβ in the stress-sensitive brain regions such as the prefrontal cortex, hippocampus and amygdala. Using a rodent model of chronic unpredictable mild stress (CUMS), we report that two weeks of CUMS in young male mice (10±2weeks) induces noteworthy changes in the ratio of ERα/ERβ in the prefrontal cortex and hippocampus. While we observed a significant (P<0.05) increase in ERα mRNA and protein expression levels, the expression of ERβ in the prefrontal cortex, hippocampus and amygdala was significantly reduced. This increase in ERα expression with concomitant decrease in ERβ expression was associated with increased anxiety- and depression-like behaviour as observed in elevated plus maze test, open field test, forced swim test and sucrose preference test. In addition to these behavioural changes, we report the decrease of dendritic complexity with concomitant increase in spine density in the medial prefrontal cortex, dorsohippocampal CA3 region and basolateral complex of amygdala (BLA). Taken together, these results suggest that the CUMS-induced increase in the ratio of ERα/ERβ causes dendritic remodeling, which in turn might be responsible for increase in anxiety- and depression-like behaviour in young male mice.
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Affiliation(s)
- Himanshu R Sharma
- Biochemistry and Molecular Biology Laboratory, Brain Research Centre, Department of Zoology, Banaras Hindu University, Varanasi 221 005, India
| | - Mahendra K Thakur
- Biochemistry and Molecular Biology Laboratory, Brain Research Centre, Department of Zoology, Banaras Hindu University, Varanasi 221 005, India.
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