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Casanova JP, Pouget C, Treiber N, Agarwal I, Brimble MA, Vetere G. Threat-dependent scaling of prelimbic dynamics to enhance fear representation. Neuron 2024:S0896-6273(24)00317-9. [PMID: 38772375 DOI: 10.1016/j.neuron.2024.04.029] [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: 10/25/2023] [Revised: 03/01/2024] [Accepted: 04/24/2024] [Indexed: 05/23/2024]
Abstract
Promptly identifying threatening stimuli is crucial for survival. Freezing is a natural behavior displayed by rodents toward potential or actual threats. Although it is known that the prelimbic cortex (PL) is involved in both risk evaluation and in fear and anxiety-like behavior expression, here we explored whether PL neuronal activity can dynamically represent different internal states of the same behavioral output (i.e., freezing). We found that freezing can always be decoded from PL activity at a population level. However, the sudden presentation of a fearful stimulus quickly reshaped the PL to a new neuronal activity state, an effect not observed in other cortical or subcortical regions examined. This shift changed PL freezing representation and is necessary for fear memory expression. Our data reveal the unique role of the PL in detecting threats and internally adjusting to distinguish between different freezing-related states in both unconditioned and conditioned fear representations.
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Affiliation(s)
- José Patricio Casanova
- Cerebral Codes and Circuits Connectivity team, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France
| | - Clément Pouget
- Cerebral Codes and Circuits Connectivity team, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France
| | - Nadja Treiber
- Cerebral Codes and Circuits Connectivity team, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France
| | - Ishaant Agarwal
- Cerebral Codes and Circuits Connectivity team, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France
| | - Mark Allen Brimble
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Gisella Vetere
- Cerebral Codes and Circuits Connectivity team, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 10 rue Vauquelin, 75005 Paris, France.
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2
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Botterill JJ, Khlaifia A, Appings R, Wilkin J, Violi F, Premachandran H, Cruz-Sanchez A, Canella AE, Patel A, Zaidi SD, Arruda-Carvalho M. Dorsal peduncular cortex activity modulates affective behavior and fear extinction in mice. Neuropsychopharmacology 2024; 49:993-1006. [PMID: 38233571 PMCID: PMC11039686 DOI: 10.1038/s41386-024-01795-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/19/2024]
Abstract
The medial prefrontal cortex (mPFC) is critical to cognitive and emotional function and underlies many neuropsychiatric disorders, including mood, fear and anxiety disorders. In rodents, disruption of mPFC activity affects anxiety- and depression-like behavior, with specialized contributions from its subdivisions. The rodent mPFC is divided into the dorsomedial prefrontal cortex (dmPFC), spanning the anterior cingulate cortex (ACC) and dorsal prelimbic cortex (PL), and the ventromedial prefrontal cortex (vmPFC), which includes the ventral PL, infralimbic cortex (IL), and in some studies the dorsal peduncular cortex (DP) and dorsal tenia tecta (DTT). The DP/DTT have recently been implicated in the regulation of stress-induced sympathetic responses via projections to the hypothalamus. While many studies implicate the PL and IL in anxiety-, depression-like and fear behavior, the contribution of the DP/DTT to affective and emotional behavior remains unknown. Here, we used chemogenetics and optogenetics to bidirectionally modulate DP/DTT activity and examine its effects on affective behaviors, fear and stress responses in C57BL/6J mice. Acute chemogenetic activation of DP/DTT significantly increased anxiety-like behavior in the open field and elevated plus maze tests, as well as passive coping in the tail suspension test. DP/DTT activation also led to an increase in serum corticosterone levels and facilitated auditory fear extinction learning and retrieval. Activation of DP/DTT projections to the dorsomedial hypothalamus (DMH) acutely decreased freezing at baseline and during extinction learning, but did not alter affective behavior. These findings point to the DP/DTT as a new regulator of affective behavior and fear extinction in mice.
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Affiliation(s)
- Justin J Botterill
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
- Department of Anatomy, Physiology, and Pharmacology, University of Saskatchewan, Saskatoon, SK, S7N 5E5, Canada
| | - Abdessattar Khlaifia
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Ryan Appings
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Jennifer Wilkin
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Francesca Violi
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Hanista Premachandran
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Arely Cruz-Sanchez
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, M5S3G5, Canada
| | - Anna Elisabete Canella
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Ashutosh Patel
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - S Danyal Zaidi
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada
| | - Maithe Arruda-Carvalho
- Department of Psychology, University of Toronto Scarborough, Toronto, ON, M1C1A4, Canada.
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, M5S3G5, Canada.
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3
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Tudi A, Yao M, Tang F, Zhou J, Li A, Gong H, Jiang T, Li X. Subregion preference in the long-range connectome of pyramidal neurons in the medial prefrontal cortex. BMC Biol 2024; 22:95. [PMID: 38679719 PMCID: PMC11057135 DOI: 10.1186/s12915-024-01880-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/04/2024] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND The medial prefrontal cortex (mPFC) is involved in complex functions containing multiple types of neurons in distinct subregions with preferential roles. The pyramidal neurons had wide-range projections to cortical and subcortical regions with subregional preferences. Using a combination of viral tracing and fluorescence micro-optical sectioning tomography (fMOST) in transgenic mice, we systematically dissected the whole-brain connectomes of intratelencephalic (IT) and pyramidal tract (PT) neurons in four mPFC subregions. RESULTS IT and PT neurons of the same subregion projected to different target areas while receiving inputs from similar upstream regions with quantitative differences. IT and PT neurons all project to the amygdala and basal forebrain, but their axons target different subregions. Compared to subregions in the prelimbic area (PL) which have more connections with sensorimotor-related regions, the infralimbic area (ILA) has stronger connections with limbic regions. The connection pattern of the mPFC subregions along the anterior-posterior axis showed a corresponding topological pattern with the isocortex and amygdala but an opposite orientation correspondence with the thalamus. CONCLUSIONS By using transgenic mice and fMOST imaging, we obtained the subregional preference whole-brain connectomes of IT and pyramidal tract PT neurons in the mPFC four subregions. These results provide a comprehensive resource for directing research into the complex functions of the mPFC by offering anatomical dissections of the different subregions.
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Affiliation(s)
- Ayizuohere Tudi
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Mei Yao
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Feifang Tang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Jiandong Zhou
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
| | - Anan Li
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
- HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, China
| | - Hui Gong
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, China
- HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, China
| | - Tao Jiang
- HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, China.
| | - Xiangning Li
- HUST-Suzhou Institute for Brainsmatics, JITRI, Suzhou, China.
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, China.
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Francis-Oliveira J, Higa GSV, Viana FJC, Cruvinel E, Carlos-Lima E, da Silva Borges F, Zampieri TT, Rebello FP, Ulrich H, De Pasquale R. TREK-1 inhibition promotes synaptic plasticity in the prelimbic cortex. Exp Neurol 2024; 373:114652. [PMID: 38103709 DOI: 10.1016/j.expneurol.2023.114652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/28/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Synaptic plasticity is one of the putative mechanisms involved in the maturation of the prefrontal cortex (PFC) during postnatal development. Early life stress (ELS) affects the shaping of cortical circuitries through impairment of synaptic plasticity supporting the onset of mood disorders. Growing evidence suggests that dysfunctional postnatal maturation of the prelimbic division (PL) of the PFC might be related to the emergence of depression. The potassium channel TREK-1 has attracted particular interest among many factors that modulate plasticity, concerning synaptic modifications that could underlie mood disorders. Studies have found that ablation of TREK-1 increases the resilience to depression, while rats exposed to ELS exhibit higher TREK-1 levels in the PL. TREK-1 is regulated by multiple intracellular transduction pathways including the ones activated by metabotropic receptors. In the hippocampal neurons, TREK-1 interacts with the serotonergic system, one of the main factors involved in the action of antidepressants. To investigate possible mechanisms related to the antidepressant role of TREK-1, we used brain slice electrophysiology to evaluate the effects of TREK-1 pharmacological blockade on synaptic plasticity at PL circuitry. We extended this investigation to animals subjected to ELS. Our findings suggest that in non-stressed animals, TREK-1 activity is required for the reduction of synaptic responses mediated by the 5HT1A receptor activation. Furthermore, we demonstrate that TREK-1 blockade promotes activity-dependent long-term depression (LTD) when acting in synergy with 5HT1A receptor stimulation. On the other hand, in ELS animals, TREK-1 blockade reduces synaptic transmission and facilitates LTD expression. These results indicate that TREK-1 inhibition stimulates synaptic plasticity in the PL and this effect is more pronounced in animals subjected to ELS during postnatal development.
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Affiliation(s)
- José Francis-Oliveira
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil; Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Guilherme Shigueto Vilar Higa
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil; Departamento de Bioquímica, Instituto de Química (USP), Butantã, SP 05508-900, Brazil; Laboratório de Neurogenética, Universidade Federal do ABC, São Bernardo do Campo, SP 09210-580, Brazil
| | - Felipe José Costa Viana
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil
| | - Emily Cruvinel
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil
| | - Estevão Carlos-Lima
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil
| | - Fernando da Silva Borges
- Department of Physiology & Pharmacology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Thais Tessari Zampieri
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil
| | - Fernanda Pereira Rebello
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil
| | - Henning Ulrich
- Departamento de Bioquímica, Instituto de Química (USP), Butantã, SP 05508-900, Brazil
| | - Roberto De Pasquale
- Laboratório de Neurofisiologia, Departamento de Fisiologia e Biofísica, Universidade de São Paulo, Butantã, SP 05508-000, Brazil.
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Li LF, Li ZL, Song BL, Jiang Y, Wang Y, Zou HW, Yao LG, Liu YJ. Dopamine D2 receptors in the dorsomedial prefrontal cortex modulate social hierarchy in male mice. Curr Zool 2023; 69:682-693. [PMID: 37876636 PMCID: PMC10591156 DOI: 10.1093/cz/zoac087] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 11/01/2022] [Indexed: 10/26/2023] Open
Abstract
Social hierarchy greatly influences behavior and health. Both human and animal studies have signaled the medial prefrontal cortex (mPFC) as specifically related to social hierarchy. Dopamine D1 receptors (D1Rs) and D2 receptors (D2Rs) are abundantly expressed in the mPFC, modulating its functions. However, it is unclear how DR-expressing neurons in the mPFC regulate social hierarchy. Here, using a confrontation tube test, we found that most adult C57BL/6J male mice could establish a linear social rank after 1 week of cohabitation. Lower rank individuals showed social anxiety together with decreased serum testosterone levels. D2R expression was significantly downregulated in the dorsal part of mPFC (dmPFC) in lower rank individuals, whereas D1R expression showed no significant difference among the rank groups in the whole mPFC. Virus knockdown of D2Rs in the dmPFC led to mice being particularly prone to lose the contests in the confrontation tube test. Finally, simultaneous D2R activation in the subordinates and D2R inhibition in the dominants in a pair switched their dominant-subordinate relationship. The above results indicate that D2Rs in the dmPFC play an important role in social dominance. Our findings provide novel insights into the divergent functions of prefrontal D1Rs and D2Rs in social dominance, which may contribute to ameliorating social dysfunctions along with abnormal social hierarchy.
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Affiliation(s)
- Lai-Fu Li
- Henan Key Laboratory of Insect Biology in Funiu Mountain, Henan International Joint Laboratory of Insect Biology, College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Zi-Lin Li
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Bai-Lin Song
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Yi Jiang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Yan Wang
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Hua-Wei Zou
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Lun-Guang Yao
- Henan Key Laboratory of Insect Biology in Funiu Mountain, Henan International Joint Laboratory of Insect Biology, College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
| | - Ying-Juan Liu
- Henan Key Laboratory of Insect Biology in Funiu Mountain, Henan International Joint Laboratory of Insect Biology, College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
- Research Center of Henan Provincial Agricultural Biomass Resource Engineering and Technology, College of Life Science and Agriculture, Nanyang Normal University, Nanyang 473061, Henan, China
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6
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Jang DC, Choi S, Chung G, Kim SK. Global Cerebral Ischemia-induced Depression Accompanies Alteration of Neuronal Excitability in the Infralimbic Cortex Layer 2/3 Pyramidal Neurons. Exp Neurobiol 2023; 32:302-312. [PMID: 37749930 PMCID: PMC10569139 DOI: 10.5607/en23017] [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: 06/21/2023] [Revised: 07/19/2023] [Accepted: 08/30/2023] [Indexed: 09/27/2023] Open
Abstract
Cerebral ischemia can lead to a range of sequelae, including depression. The pathogenesis of depression involves neuronal change of the medial prefrontal cortex (mPFC). However, how cerebral ischemia-induced changes manifest across subregions and layers of the mPFC is not well understood. In this study, we induced cerebral ischemia in mice via transient bilateral common carotid artery occlusion (tBCCAO) and observed depressive-like behavior. Using whole-cell patch clamp recording, we identified changes in the excitability of pyramidal neurons in the prelimbic cortex (PL) and infralimbic cortex (IL), the subregions of mPFC. Compared to sham control mice, tBCCAO mice showed significantly reduced neuronal excitability in IL layer 2/3 but not layer 5 pyramidal neurons, accompanied by increased rheobase current and decreased input resistance. In contrast, no changes were observed in the excitability of PL layer 2/3 and layer 5 pyramidal neurons. Our results provide a new direction for studying the pathogenesis of depression following ischemic damage by showing that cerebral ischemia induces subregion- and layer-specific changes in the mPFC pyramidal neurons.
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Affiliation(s)
- Dong Cheol Jang
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Seunghwan Choi
- Department of East-West Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Geehoon Chung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Sun Kwang Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
- Department of East-West Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
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7
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Ji R, Cui M, Zhou D, Pan X, Xie Y, Wu X, Liang X, Zhang H, Song W. Adulthood bisphenol A exposure induces anxiety in male mice via downregulation of alpha-1D adrenergic receptor in paraventricular thalamus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115205. [PMID: 37392660 DOI: 10.1016/j.ecoenv.2023.115205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/17/2023] [Accepted: 06/27/2023] [Indexed: 07/03/2023]
Abstract
Bisphenol A (BPA), a ubiquitous endocrine disrupting chemical, is widely used in household plastic products. Large amounts of evidence indicate prenatal and postnatal BPA exposure causes neurodevelopmental disorders such as anxiety and autism. However, the neuronal mechanisms underlying the neurotoxic effects of adulthood BPA exposure remain poorly understood. Here, we provided evidences that adult mice treated with BPA (0.45 mg/kg/day) during 3 weeks exhibited sex-specific anxiety like behaviors. We demonstrated that the BPA-induced anxiety in male mice, but not in female mice, was closely associated with hyperactivity of glutamatergic neurons in the paraventricular thalamus (PVT). Acute chemogenetic activation of PVT glutamatergic neurons caused similar effects on anxiety as observed in male mice exposed to BPA. In contrast, acute chemogenetic inhibition of PVT glutamatergic neurons reduced BPA-induced anxiety in male mice. Concomitantly, the BPA-induced anxiety was related with a down-regulation of alpha-1D adrenergic receptor in the PVT. Taken together, the present study indicated a previously unknown target region in the brain for neurotoxic effects of BPA on anxiety and implicated a possible molecular mechanism of action.
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Affiliation(s)
- Ran Ji
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Mengqiao Cui
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Dongyu Zhou
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiaoyuan Pan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yuqi Xie
- School of Nursing, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xiling Wu
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xin Liang
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Hongxing Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
| | - Weiyi Song
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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8
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Dehdar K, Salimi M, Tabasi F, Dehghan S, Sumiyoshi A, Garousi M, Jamaati H, Javan M, Reza Raoufy M. Allergen induces depression-like behavior in association with altered prefrontal-hippocampal circuit in male rats. Neuroscience 2023:S0306-4522(23)00254-3. [PMID: 37286161 DOI: 10.1016/j.neuroscience.2023.05.034] [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: 12/26/2022] [Revised: 05/27/2023] [Accepted: 05/30/2023] [Indexed: 06/09/2023]
Abstract
Allergic asthma is a common chronic inflammatory condition associated with psychiatric comorbidities. Notably depression, correlated with adverse outcomes in asthmatic patients. Peripheral inflammation's role in depression has been shown previously. However, evidence regarding the effects of allergic asthma on the medial prefrontal cortex (mPFC)-ventral hippocampus (vHipp) interactions, an important neurocircuitry in affective regulation, is yet to be demonstrated. Herein, we investigated the effects of allergen exposure in sensitized rats on the immunoreactivity of glial cells, depression-like behavior, brain regions volume, as well as activity and connectivity of the mPFC-vHipp circuit. We found that allergen-induced depressive-like behavior was associated with more activated microglia and astrocytes in mPFC and vHipp, as well as reduced hippocampus volume. Intriguingly, depressive-like behavior was negatively correlated with mPFC and hippocampus volumes in the allergen-exposed group. Moreover, mPFC and vHipp activity were altered in asthmatic animals. Allergen disrupted the strength and direction of functional connectivity in the mPFC-vHipp circuit so that, unlike normal conditions, mPFC causes and modulates vHipp activity. Our results provide new insight into the underlying mechanism of allergic inflammation-induced psychiatric disorders, aiming to develop new interventions and therapeutic approaches for improving asthma complications.
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Affiliation(s)
- Kolsoum Dehdar
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Morteza Salimi
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Farhad Tabasi
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Institute for Brain Sciences and Cognition, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Samaneh Dehghan
- Stem Cell and Regenerative Medicine Research Center, Iran University of Medical Sciences, Tehran, Iran; Eye Research Center, The Five Senses Institute, Rassoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Akira Sumiyoshi
- Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Japan; National Institutes for Quantum and Radiological Science and Technology, Anagawa, Inage-ku, Chiba, Japan
| | - Mani Garousi
- Department of Electrical and Engineering, Tarbiat Modares University, Tehran, Iran
| | - Hamidreza Jamaati
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Javan
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Institute for Brain Sciences and Cognition, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Reza Raoufy
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Institute for Brain Sciences and Cognition, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
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9
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Liu WZ, Wang CY, Wang Y, Cai MT, Zhong WX, Liu T, Wang ZH, Pan HQ, Zhang WH, Pan BX. Circuit- and laminar-specific regulation of medial prefrontal neurons by chronic stress. Cell Biosci 2023; 13:90. [PMID: 37208769 DOI: 10.1186/s13578-023-01050-2] [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: 03/06/2023] [Accepted: 05/07/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND Chronic stress exposure increases the risk of mental health problems such as anxiety and depression. The medial prefrontal cortex (mPFC) is a hub for controlling stress responses through communicating with multiple limbic structures, including the basolateral amygdala (BLA) and nucleus accumbens (NAc). However, considering the complex topographical organization of the mPFC neurons in different subregions (dmPFC vs. vmPFC) and across multiple layers (Layer II/III vs. Layer V), the exact effects of chronic stress on these distinct mPFC output neurons remain largely unknown. RESULTS We first characterized the topographical organization of mPFC neurons projecting to BLA and NAc. Then, by using a typical mouse model of chronic restraint stress (CRS), we investigated the effects of chronic stress on the synaptic activity and intrinsic properties of the two mPFC neuronal populations. Our results showed that there was limited collateralization of the BLA- and NAc-projecting pyramidal neurons, regardless of the subregion or layer they were situated in. CRS significantly reduced the inhibitory synaptic transmission onto the BLA-projecting neurons in dmPFC layer V without any effect on the excitatory synaptic transmission, thus leading to a shift of the excitation-inhibition (E-I) balance toward excitation. However, CRS did not affect the E-I balance in NAc-projecting neurons in any subregions or layers of mPFC. Moreover, CRS also preferentially increased the intrinsic excitability of the BLA-projecting neurons in dmPFC layer V. By contrast, it even caused a decreasing tendency in the excitability of NAc-projecting neurons in vmPFC layer II/III. CONCLUSION Our findings indicate that chronic stress exposure preferentially modulates the activity of the mPFC-BLA circuit in a subregion (dmPFC) and laminar (layer V) -dependent manner.
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Affiliation(s)
- Wei-Zhu Liu
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Chun-Yan Wang
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Yu Wang
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Mei-Ting Cai
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Wei-Xiang Zhong
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
| | - Tian Liu
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Zhi-Hao Wang
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Han-Qing Pan
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China
| | - Wen-Hua Zhang
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China.
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China.
- Jiangxi Provincial Key Laboratory of Interdisciplinary Science, Nanchang University, Nanchang, 330031, People's Republic of China.
| | - Bing-Xing Pan
- Department of Biological Science, School of Life Science, Nanchang University, Nanchang, 330031, China.
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang, 330031, China.
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10
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Chao THH, Lee B, Hsu LM, Cerri DH, Zhang WT, Wang TWW, Ryali S, Menon V, Shih YYI. Neuronal dynamics of the default mode network and anterior insular cortex: Intrinsic properties and modulation by salient stimuli. SCIENCE ADVANCES 2023; 9:eade5732. [PMID: 36791185 PMCID: PMC9931216 DOI: 10.1126/sciadv.ade5732] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 01/19/2023] [Indexed: 05/26/2023]
Abstract
The default mode network (DMN) is critical for self-referential mental processes, and its dysfunction is implicated in many neuropsychiatric disorders. However, the neurophysiological properties and task-based functional organization of the rodent DMN are poorly understood, limiting its translational utility. Here, we combine fiber photometry with functional magnetic resonance imaging (fMRI) and computational modeling to characterize dynamics of putative rat DMN nodes and their interactions with the anterior insular cortex (AI) of the salience network. Our analysis revealed neuronal activity changes in AI and DMN nodes preceding fMRI-derived DMN activations and cyclical transitions between brain network states. Furthermore, we demonstrate that salient oddball stimuli suppress the DMN and enhance AI neuronal activity and that the AI causally inhibits the retrosplenial cortex, a prominent DMN node. These findings elucidate the neurophysiological foundations of the rodent DMN, its spatiotemporal dynamical properties, and modulation by salient stimuli, paving the way for future translational studies.
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Affiliation(s)
- Tzu-Hao Harry Chao
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Byeongwook Lee
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Li-Ming Hsu
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Domenic Hayden Cerri
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Wei-Ting Zhang
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Tzu-Wen Winnie Wang
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Srikanth Ryali
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Vinod Menon
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA
- Wu Tsai Neuroscience Institute, Stanford University, Stanford, CA, USA
| | - Yen-Yu Ian Shih
- Center for Animal MRI, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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11
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Changes in mRNA and miRNA expression in the prelimbic cortex related to depression-like syndrome induced by chronic social defeat stress in mice. Behav Brain Res 2023; 438:114211. [PMID: 36368442 DOI: 10.1016/j.bbr.2022.114211] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/31/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022]
Abstract
Major depressive disorder is a complex psychiatric disorder with a high prevalence rate worldwide. Previous studies have demonstrated the involvement of the prelimbic cortex (PL) in mediating depressive-like behavior, however, the exact molecular mechanism taking place in the PL remains unclear. In the present study, we conducted high-throughput sequencing of mRNAs and miRNAs in PL tissue harvested from chronic social defeat stress (CSDS) susceptible male mice. We identified 59 differentially expressed mRNAs and 6 differentially expressed miRNAs, in which 40 mRNAs and 3 miRNAs were up-regulated, while 19 mRNAs and 3 miRNAs were down-regulated. Integrated analysis of miRNA-mRNA networks suggested that GPR35 signaling might be involved in CSDS-induced depressive-like behaviors. RT-PCR and western blot assays validated that Abra, Sell and GPR35 were up-regulated. Functionally, inhibition of GPR35 in the PL ameliorated CSDS-induced depressive-like behaviors. Thus, the present study provided a global view of mRNA and miRNA profiles in the PL of male stress susceptible mice, and suggested that GPR35 signaling was associated with CSDS-induced depressive-like behaviors. These results may be valuable for further investigations of the molecular regulatory mechanisms in stress-induced depression.
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12
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Alexander L, Wood CM, Roberts AC. The ventromedial prefrontal cortex and emotion regulation: lost in translation? J Physiol 2023; 601:37-50. [PMID: 35635793 PMCID: PMC10084434 DOI: 10.1113/jp282627] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/13/2022] [Indexed: 01/03/2023] Open
Abstract
Neuroimaging studies implicate the ventromedial prefrontal cortex (vmPFC) in a wide range of emotional and cognitive functions, and changes in activity within vmPFC have been linked to the aetiology and successful treatment of depression. However, this is a large, structurally heterogeneous region and the extent to which this structural heterogeneity reflects functional heterogeneity remains unclear. Causal studies in animals should help address this question but attempts to map findings from vmPFC studies in rodents onto human imaging studies highlight cross-species discrepancies between structural homology and functional analogy. Bridging this gap, recent studies in marmosets - a species of new world monkey in which the overall organization of vmPFC is more like humans than that of rodents - have revealed that over-activation of the caudal subcallosal region of vmPFC, area 25, but not neighbouring area 32, heightens reactivity to negatively valenced stimuli whilst blunting responsivity to positively valenced stimuli. These co-occurring states resemble those seen in depressed patients, which are associated with increased activity in caudal subcallosal regions. In contrast, only reward blunting but not heightening of threat reactivity is seen following over-activation of the structurally homologous region in rodents. To further advance understanding of the role of vmPFC in the aetiology and treatment of depression, future work should focus on the behaviourally specific networks by which vmPFC regions have their effects, together with characterization of cross-species similarities and differences in function.
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Affiliation(s)
- Laith Alexander
- St Thomas’ HospitalLondonUK
- Department of Psychological MedicineSchool of Academic PsychiatryInstitute of Psychiatry, Psychology and NeuroscienceKing's College LondonLondonUK
| | - Christian M. Wood
- Department of PhysiologyDevelopment and NeuroscienceUniversity of CambridgeCambridgeUK
- Behavioural and Clinical Neuroscience InstituteUniversity of CambridgeCambridgeUK
| | - Angela C. Roberts
- Department of PhysiologyDevelopment and NeuroscienceUniversity of CambridgeCambridgeUK
- Behavioural and Clinical Neuroscience InstituteUniversity of CambridgeCambridgeUK
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13
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Yashima J, Uekita T, Sakamoto T. The prelimbic cortex but not the anterior cingulate cortex plays an important role in social recognition and social investigation in mice. PLoS One 2023; 18:e0284666. [PMID: 37083625 PMCID: PMC10121050 DOI: 10.1371/journal.pone.0284666] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/05/2023] [Indexed: 04/22/2023] Open
Abstract
The prefrontal cortex (PFC) has been implicated in social cognitive functions and emotional behaviors in rodents. Each subregion (prelimbic cortex, PL; infralimbic cortex; and anterior cingulate cortex, ACC) of the PFC appears to play a different role in social and emotional behaviors. However, previous investigations have produced inconsistent data, and few previous studies directly compared the roles of the PFC subregions using the same experimental paradigm. Accordingly, in the present study, we examined the role of the PL and the ACC in short-term social recognition, social investigation, and anxiety-related behaviors in C57BL/6J mice. We subjected mice with a lesioned PL or ACC, as well as those in a sham control group, to tests of social recognition and social novelty where juvenile and adult male mice were used as social stimuli. In the social recognition test, the PL-lesioned mice exhibited habituation but not dishabituation regardless of whether they encountered juvenile or adult mice. In a subsequent social novelty test, they spent less time engaged in social investigation compared with the control mice when adult mice were used as social stimuli. These results suggest that PL lesions impaired both social recognition and social investigation. In contrast, ACC-lesioned mice did not exhibit impaired short-term social recognition or social investigation regardless of the social stimulus. Furthermore, PL lesions and ACC lesions did not affect anxiety-related behavior in the open field test or light-dark transition test. Our findings demonstrate that the PL but not the ACC plays an important role in social recognition and social investigation.
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Affiliation(s)
- Joi Yashima
- Department of Psychology, Graduate School of Health Sciences, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto, Japan
| | - Tomoko Uekita
- Department of Psychology, Graduate School of Health Sciences, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto, Japan
| | - Toshiro Sakamoto
- Department of Psychology, Graduate School of Health Sciences, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto, Japan
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14
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Lei Z, Lam Y, Li C, Fu Z, Ramkrishnan AS, Liu S, Li Y. β2-Adrenoceptors in the Medial Prefrontal Cortex Excitatory Neurons Regulate Anxiety-like Behavior in Mice. Int J Mol Sci 2022; 23:ijms23105578. [PMID: 35628393 PMCID: PMC9145949 DOI: 10.3390/ijms23105578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 12/04/2022] Open
Abstract
The medial prefrontal cortex (mPFC) and β-adrenoceptors (βARs) have been implicated in modulating anxiety-like behavior. However, the specific contributions of the β2-AR subtype in mPFC in anxiety are still unclear. To address this issue, we used optogenetic and microRNA-based (miRNA) silencing to dissect the role of β2-AR in mPFC in anxiety-like behavior. On the one hand, we use a chimeric rhodopsin/β2-AR (Opto-β2-AR) with in vivo optogenetic techniques to selectively activate β2-adrenergic signaling in excitatory neurons of the mPFC. We found that opto-activation of β2-AR is sufficient to induce anxiety-like behavior and reduce social interaction. On the other hand, we utilize the miRNA silencing technique to specifically knock down the β2-AR in mPFC excitatory neurons. We found that the β2-AR knock down induces anxiolytic-like behavior and promotes social interaction compared to the control group. These data suggest that β2-AR signaling in the mPFC has a critical role in anxiety-like states. These findings suggest that inhibiting of β2-AR signaling in the mPFC may be an effective treatment of anxiety disorders.
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Affiliation(s)
- Zhuogui Lei
- Department of Neuroscience, City University of Hong Kong, Hong Kong 999077, China; (Z.L.); (Z.F.); (A.S.R.); (S.L.)
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
| | - Yukyan Lam
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
| | - Cheukhin Li
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
| | - Zhongqi Fu
- Department of Neuroscience, City University of Hong Kong, Hong Kong 999077, China; (Z.L.); (Z.F.); (A.S.R.); (S.L.)
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences, Hong Kong 999077, China
| | - Aruna S. Ramkrishnan
- Department of Neuroscience, City University of Hong Kong, Hong Kong 999077, China; (Z.L.); (Z.F.); (A.S.R.); (S.L.)
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
| | - Shu Liu
- Department of Neuroscience, City University of Hong Kong, Hong Kong 999077, China; (Z.L.); (Z.F.); (A.S.R.); (S.L.)
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
| | - Ying Li
- Department of Neuroscience, City University of Hong Kong, Hong Kong 999077, China; (Z.L.); (Z.F.); (A.S.R.); (S.L.)
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, China; (Y.L.); (C.L.)
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences, Hong Kong 999077, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Hong Kong 999077, China
- Correspondence:
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15
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Saitoh A, Nagayama Y, Yamada D, Makino K, Yoshioka T, Yamanaka N, Nakatani M, Takahashi Y, Yamazaki M, Shigemoto C, Ohashi M, Okano K, Omata T, Toda E, Sano Y, Takahashi H, Matsushima K, Terashima Y. Disulfiram Produces Potent Anxiolytic-Like Effects Without Benzodiazepine Anxiolytics-Related Adverse Effects in Mice. Front Pharmacol 2022; 13:826783. [PMID: 35330835 PMCID: PMC8940232 DOI: 10.3389/fphar.2022.826783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/14/2022] [Indexed: 12/02/2022] Open
Abstract
Disulfiram is an FDA approved drug for the treatment of alcoholism. The drug acts by inhibiting aldehyde dehydrogenase, an enzyme essential to alcohol metabolism. However, a recent study has demonstrated that disulfiram also potently inhibits the cytoplasmic protein FROUNT, a common regulator of chemokine receptor CCR2 and CCR5 signaling. Several studies have reported that chemokine receptors are associated with the regulation of emotional behaviors in rodents, such as anxiety. Therefore, this study was performed to clarify the effect of disulfiram on emotional behavior in rodents. The anxiolytic-like effects of disulfiram were investigated using an elevated plus-maze (EPM) test, a typical screening model for anxiolytics. Disulfiram (40 or 80 mg/kg) significantly increased the amount of time spent in the open arms of the maze and the number of open arm entries without affecting the total open arms entries. Similar results were obtained in mice treated with a selective FROUNT inhibitor, disulfiram-41 (10 mg/kg). These disulfiram-associated behavioral changes were similar to those observed following treatment with the benzodiazepine anxiolytic diazepam (1.5 mg/kg). Moreover, disulfiram (40 mg/kg) significantly and completely attenuated increased extracellular glutamate levels in the prelimbic-prefrontal cortex (PL-PFC) during stress exposure on the elevated open-platform. However, no effect in the EPM test was seen following administration of the selective aldehyde dehydrogenase inhibitor cyanamide (40 mg/kg). In contrast to diazepam, disulfiram caused no sedation effects in the open-field, coordination disorder on a rotarod, or amnesia in a Y-maze. This is the first report suggesting that disulfiram produces anxiolytic-like effects in rodents. We found that the presynaptic inhibitory effects on glutaminergic neurons in the PL-PFC may be involved in its underlying mechanism. Disulfiram could therefore be an effective and novel anxiolytic drug that does not produce benzodiazepine-related adverse effects, such as amnesia, coordination disorder, or sedation, as found with diazepam. We propose that the inhibitory activity of disulfiram against FROUNT function provides an effective therapeutic option in anxiety.
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Affiliation(s)
- Akiyoshi Saitoh
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Yoshifumi Nagayama
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Daisuke Yamada
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kosho Makino
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Toshinori Yoshioka
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Nanami Yamanaka
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Momoka Nakatani
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Yoshino Takahashi
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Mayuna Yamazaki
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Chihiro Shigemoto
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Misaki Ohashi
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kotaro Okano
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Tomoki Omata
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Etsuko Toda
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Yoshitake Sano
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Hideyo Takahashi
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, Japan
| | - Yuya Terashima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, Japan
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16
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Canto-de-Souza L, Demetrovich PG, Plas S, Souza RR, Epperson J, Wahlstrom KL, Nunes-de-Souza RL, LaLumiere RT, Planeta CS, McIntyre CK. Daily Optogenetic Stimulation of the Left Infralimbic Cortex Reverses Extinction Impairments in Male Rats Exposed to Single Prolonged Stress. Front Behav Neurosci 2022; 15:780326. [PMID: 34987362 PMCID: PMC8721142 DOI: 10.3389/fnbeh.2021.780326] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is associated with decreased activity in the prefrontal cortex. PTSD-like pathophysiology and behaviors have been observed in rodents exposed to a single prolonged stress (SPS) procedure. When animals are left alone for 7 days after SPS treatment, they show increased anxiety-like behavior and impaired extinction of conditioned fear, and reduced activity in the prefrontal cortex. Here, we tested the hypothesis that daily optogenetic stimulation of the infralimbic region (IL) of the medial prefrontal cortex (mPFC) during the 7 days after SPS would reverse SPS effects on anxiety and fear extinction. Male Sprague-Dawley rats underwent SPS and then received daily optogenetic stimulation (20 Hz, 2 s trains, every 10 s for 15 min/day) of glutamatergic neurons of the left or right IL for seven days. After this incubation period, rats were tested in the elevated plus-maze (EPM). Twenty-four hours after the EPM test, rats underwent auditory fear conditioning (AFC), extinction training and a retention test. SPS increased anxiety-like behavior in the EPM task and produced a profound impairment in extinction of AFC. Optogenetic stimulation of the left IL, but not right, during the 7-day incubation period reversed the extinction impairment. Optogenetic stimulation did not reverse the increased anxiety-like behavior, suggesting that the extinction effects are not due to a treatment-induced reduction in anxiety. Results indicate that increased activity of the left IL after traumatic experiences can prevent development of extinction impairments. These findings suggest that non-invasive brain stimulation may be a useful tool for preventing maladaptive responses to trauma.
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Affiliation(s)
- Lucas Canto-de-Souza
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University - UNESP, Araraquara, Brazil.,Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil.,School of Behavior and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Peyton G Demetrovich
- School of Behavior and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Samantha Plas
- School of Behavior and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States
| | - Rimenez R Souza
- School of Behavior and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States.,Texas Biomedical Device Center, The University of Texas at Dallas, Richardson, TX, United States
| | - Joseph Epperson
- Texas Biomedical Device Center, The University of Texas at Dallas, Richardson, TX, United States
| | - Krista L Wahlstrom
- Department of Psychological and Brain Sciences, University of Iowa, Iowa City, IA, United States
| | - Ricardo Luiz Nunes-de-Souza
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University - UNESP, Araraquara, Brazil.,Institute of Neuroscience and Behavior, Ribeirão Preto, Brazil.,Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos - UFSCar/UNESP, São Carlos, Brazil
| | - Ryan T LaLumiere
- Department of Psychological and Brain Sciences, University of Iowa, Iowa City, IA, United States.,Iowa Neuroscience Institute, University of Iowa, Iowa City, IA, United States
| | - Cleopatra Silva Planeta
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, São Paulo State University - UNESP, Araraquara, Brazil.,Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos - UFSCar/UNESP, São Carlos, Brazil
| | - Christa K McIntyre
- School of Behavior and Brain Sciences, The University of Texas at Dallas, Richardson, TX, United States.,Texas Biomedical Device Center, The University of Texas at Dallas, Richardson, TX, United States
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17
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Evrard MR, Li M, Shen H, Smith SS. Preventing adolescent synaptic pruning in mouse prelimbic cortex via local knockdown of α4βδ GABA A receptors increases anxiety response in adulthood. Sci Rep 2021; 11:21059. [PMID: 34702942 PMCID: PMC8548505 DOI: 10.1038/s41598-021-99965-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 09/29/2021] [Indexed: 01/25/2023] Open
Abstract
Anxiety is increasingly reported, especially in adolescent females. The etiology is largely unknown, which limits effective treatment. Layer 5 prelimbic cortex (L5PL) increases anxiety responses but undergoes adolescent synaptic pruning, raising the question of the impact of pruning on anxiety. Here we show that preventing L5PL pruning increases anxiety in response to an aversive event in adolescent and adult female mice. Spine density of Golgi-stained neurons decreased ~ 63% from puberty (~ PND35, vaginal opening) to post-puberty (PND56, P < 0.0001). Expression of α4βδ GABAA receptors (GABARs) transiently increased tenfold in L5PL at puberty (P < 0.00001), but decreased post-pubertally. Both global and local knockdown of these receptors during puberty prevented pruning, increasing spine density post-pubertally (P < 0.0001), an effect reversed by blocking NMDA receptors (NMDARs). Pubertal expression of the NMDAR-dependent spine protein kalirin7 decreased (50%, P < 0.0001), an effect prevented by α4 knock-out, suggesting that α4βδ-induced reductions in kalirin7 underlie pruning. Increased spine density due to local α4 knockdown at puberty decreased open arm time on the elevated plus maze post-pubertally (62%, P < 0.0001) in response to an aversive stimulus, suggesting that increases in L5PL synapses increase anxiety responses. These findings suggest that prelimbic synaptic pruning is necessary to limit anxiety in adulthood and may suggest novel therapies.
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Affiliation(s)
- Matthew R Evrard
- Department of Physiology and Pharmacology, SUNY Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY, 11203, USA.,Graduate Program in Neural and Behavioral Science, SUNY Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY, 11203, USA
| | - Michael Li
- Department of Physiology and Pharmacology, SUNY Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY, 11203, USA.,College of Arts and Sciences, Hunter College, New York, NY, 10065, USA
| | - Hui Shen
- Department of Physiology and Pharmacology, SUNY Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY, 11203, USA.,School of Biomedical Engineering, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Sheryl S Smith
- Department of Physiology and Pharmacology, SUNY Downstate Medical Center, 450 Clarkson Ave., Brooklyn, NY, 11203, USA.
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18
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Murkar A, De Koninck J, Merali Z. Cannabinoids: Revealing their complexity and role in central networks of fear and anxiety. Neurosci Biobehav Rev 2021; 131:30-46. [PMID: 34487746 DOI: 10.1016/j.neubiorev.2021.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 08/29/2021] [Accepted: 09/01/2021] [Indexed: 12/11/2022]
Abstract
The first aim of the present review is to provide an in-depth description of the cannabinoids and their known effects at various neuronal receptors. It reveals that cannabinoids are highly diverse, and recent work has highlighted that their effects on the central nervous system (CNS) are surprisingly more complex than previously recognized. Cannabinoid-sensitive receptors are widely distributed throughout the CNS where they act as primary modulators of neurotransmission. Secondly, we examine the role of cannabinoid receptors at key brain sites in the control of fear and anxiety. While our understanding of how cannabinoids specifically modulate these networks is mired by their complex interactions and diversity, a plausible framework(s) for their effects is proposed. Finally, we highlight some important knowledge gaps in our understanding of the mechanism(s) responsible for their effects on fear and anxiety in animal models and their use as therapeutic targets in humans. This is particularly important for our understanding of the phytocannabinoids used as novel clinical interventions.
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Affiliation(s)
- Anthony Murkar
- University of Ottawa Institute of Mental Health Research (IMHR), Ottawa, ON, Canada; School of Psychology, University of Ottawa, Ottawa, ON, Canada.
| | - Joseph De Koninck
- University of Ottawa Institute of Mental Health Research (IMHR), Ottawa, ON, Canada; School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Zul Merali
- School of Psychology, University of Ottawa, Ottawa, ON, Canada; Brain and Mind Institute, Aga Khan University, Nairobi, Kenya; Carleton University, Neuroscience Department, Ottawa, ON, Canada
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19
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Jing XY, Wang Y, Zou HW, Li ZL, Liu YJ, Li LF. mGlu2/3 receptor in the prelimbic cortex is implicated in stress resilience and vulnerability in mice. Eur J Pharmacol 2021; 906:174231. [PMID: 34090896 DOI: 10.1016/j.ejphar.2021.174231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 05/28/2021] [Accepted: 06/02/2021] [Indexed: 01/30/2023]
Abstract
Resilience, referring to "achieving a positive outcome in the face of adversity", is a common phenomenon in daily life. Elucidating the mechanisms of stress resilience is instrumental to developing more effective treatments for stress-related psychiatric disorders such as depression. Metabotropic glutamate receptors (mGlu2/3 and mGlu5) within the medial prefrontal cortex (mPFC) have been recently recognized as promising therapeutic targets for rapid-acting antidepressant treatment. In this study, we assessed the functional roles of the mGlu2/3 and mGlu5 within different subregions of the mPFC in modulating stress resilience and vulnerability by using chronic social defeat stress (CSDS) paradigms in mice. Our results showed that approximately 51.6% of the subjects exhibited depression- or anxiety-like behaviors after exposure to CSDS. When a susceptible mouse was confronted with an attacker, c-Fos expression in the prelimbic cortex (PrL) subregion of the mPFC substantially increased. Compared with the resilient and control groups, the expression of mGlu2/3 was elevated in the PrL of the susceptible group. The expression of mGlu5 showed no significant difference among the three groups in the whole mPFC. Finally, we found that the social avoidance symptoms of the susceptible mice were rapidly relieved by intra-PrL administration of LY341495-an mGluR2/3 antagonists. The above results indicate that mGluR2/3 within the PrL may play an important regulatory role in stress-related psychiatric disorders. Our results are meaningful, as they expand our understanding of stress resilience and vulnerability which may open an avenue to develop novel, personalized approaches to mitigate depression and promote stress resilience.
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Affiliation(s)
- Xiao-Yuan Jing
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China
| | - Yan Wang
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China
| | - Hua-Wei Zou
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China
| | - Zi-Lin Li
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China
| | - Ying-Juan Liu
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China.
| | - Lai-Fu Li
- College of Life Science and Agriculture, Nanyang Normal Univerity, Nanyang, 473061, China.
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20
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Marchisella F, Creutzberg KC, Begni V, Sanson A, Wearick-Silva LE, Tractenberg SG, Orso R, Kestering-Ferreira É, Grassi-Oliveira R, Riva MA. Exposure to Prenatal Stress Is Associated With an Excitatory/Inhibitory Imbalance in Rat Prefrontal Cortex and Amygdala and an Increased Risk for Emotional Dysregulation. Front Cell Dev Biol 2021; 9:653384. [PMID: 34141707 PMCID: PMC8204112 DOI: 10.3389/fcell.2021.653384] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/07/2021] [Indexed: 12/17/2022] Open
Abstract
Epidemiological studies have shown that environmental insults and maternal stress during pregnancy increase the risk of several psychiatric disorders in the offspring. Converging lines of evidence from humans, as well as from rodent models, suggest that prenatal stress (PNS) interferes with fetal development, ultimately determining changes in brain maturation and function that may lead to the onset of neuropsychiatric disorders. From a molecular standpoint, transcriptional alterations are thought to play a major role in this context and may contribute to the behavioral phenotype by shifting the expression of genes related to excitatory and inhibitory (E/I) transmission balance. Nevertheless, the exact neurophysiological mechanisms underlying the enhanced vulnerability to psychopathology following PNS exposure are not well understood. In the present study, we used a model of maternal stress in rats to investigate the distal effects of PNS on the expression of genes related to glutamatergic and GABAergic neurotransmissions. We inspected two critical brain regions involved in emotion regulation, namely, the prefrontal cortex (PFC) and the amygdala (AMY), which we show to relate with the mild behavioral effects detected in adult rat offspring. We observed that PNS exposure promotes E/I imbalance in the PFC of adult males only, by dysregulating the expression of glutamatergic-related genes. Moreover, such an effect is accompanied by increased expression of the activity-dependent synaptic modulator gene Npas4 specifically in the PFC parvalbumin (PV)-positive interneurons, suggesting an altered regulation of synapse formation promoting higher PV-dependent inhibitory transmission and increased overall circuit inhibition in the PFC of males. In the AMY, PNS more evidently affects the transcription of GABAergic-related genes, shifting the balance toward inhibition. Collectively, our findings suggest that the E/I dysregulation of the PFC-to-AMY transmission may be a long-term signature of PNS and may contribute to increase the risk for mood disorder upon further stress.
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Affiliation(s)
- Francesca Marchisella
- Laboratory of Psychopharmacology and Molecular Psychiatry, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Kerstin Camile Creutzberg
- Laboratory of Psychopharmacology and Molecular Psychiatry, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Veronica Begni
- Laboratory of Psychopharmacology and Molecular Psychiatry, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Alice Sanson
- Laboratory of Psychopharmacology and Molecular Psychiatry, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Luis Eduardo Wearick-Silva
- Developmental Cognitive Neuroscience Lab, Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Saulo Gantes Tractenberg
- Developmental Cognitive Neuroscience Lab, Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rodrigo Orso
- Developmental Cognitive Neuroscience Lab, Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Érika Kestering-Ferreira
- Developmental Cognitive Neuroscience Lab, Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rodrigo Grassi-Oliveira
- Developmental Cognitive Neuroscience Lab, Brain Institute, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.,Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Marco Andrea Riva
- Laboratory of Psychopharmacology and Molecular Psychiatry, Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy.,Biological Psychiatry Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli Brescia, Brescia, Italy
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21
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Yin YY, Wang YH, Liu WG, Yao JQ, Yuan J, Li ZH, Ran YH, Zhang LM, Li YF. The role of the excitation:inhibition functional balance in the mPFC in the onset of antidepressants. Neuropharmacology 2021; 191:108573. [PMID: 33945826 DOI: 10.1016/j.neuropharm.2021.108573] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/30/2021] [Accepted: 04/14/2021] [Indexed: 12/15/2022]
Abstract
Currently available antidepressants, such as selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs), generally require weeks to months to produce a therapeutic response, but the mechanism of action underlying the delayed onset of antidepressant-like action remains to be elucidated. The balance between excitatory glutamatergic pyramidal neurons and inhibitory γ-aminobutyric acid (GABA) interneurons, i.e., the excitation:inhibition functional (E:I) balance, in the medial prefrontal cortex (mPFC) is critical in regulating several behaviors and might play an important mediating role in the mechanism of rapid antidepressant-like action reported by several studies. In the present study, the multichannel electrophysiological technique was used to record the firing activities of pyramidal neurons and interneurons and investigate the effects of a single dose of fluoxetine and ketamine (both 10 mg/kg, i.p.) on the E:I functional balance in the rat mPFC after 90 min or 24 h, and the forced swimming test (FST) was used to evaluate the antidepressant-like effects of fluoxetine and ketamine. The present study also explored the effects of chronic treatment with fluoxetine (10 mg/kg, i.g.) for 7 d or 21 d on the E:I functional balance in the mPFC. The present results suggested that a single dose of ketamine could both significantly increase the firing activities of pyramidal neurons and significantly decrease the firing activities of interneurons in the mPFC and exerted significant antidepressant-like action on the FST after 90 min and 24 h, but fluoxetine had no such effects under the same conditions. However, chronic treatment with fluoxetine for 21 d (but not 7 d) could significantly affect the firing activities of pyramidal neurons and interneurons in the mPFC. Taken together, the present results indicated that rapid regulation of the E:I functional balance in the mPFC might be an important common mechanism of rapid-acting antidepressants and the delayed onset of SSRIs might be partly attributed to their inability to rapidly regulate the E:I functional balance in the mPFC. The present study provided a new entry point to the development of rapid-acting antidepressants.
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Affiliation(s)
- Yong-Yu Yin
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Yun-Hui Wang
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | | | - Jun-Qi Yao
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Jin Yuan
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Ze-Han Li
- Capital Normal University High School, Beijing, China
| | - Yu-Hua Ran
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China
| | - Li-Ming Zhang
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China.
| | - Yun-Feng Li
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing, China; Beijing Institute of Basic Medical Sciences, Beijing, China.
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22
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Jacobs DS, Moghaddam B. Medial prefrontal cortex encoding of stress and anxiety. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2021; 158:29-55. [PMID: 33785149 DOI: 10.1016/bs.irn.2020.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The prefrontal cortex (PFC) is involved in adaptive control of behavior and optimizing action selection. When an organism is experiencing an aversive event, such as a sustained state of anxiety or an overt experience of fear or stress, the mechanisms that govern PFC regulation of action selection may be critical for survival. A large body of literature has shown that acute aversive states influence the activity of PFC neurons and the release of neurotransmitters in this region. These states also result in long-term neurobiological changes in the PFC and expression of PFC-dependent motivated behaviors. The mechanism for how these changes lead to modifying action selection is only recently beginning to emerge. Here, we review animal and human studies into the neural mechanisms which may mediate the adaptive changes in the PFC that emerge during negative affective states. We then highlight recent advances in approaches for understanding how anxiety influences action selection and related cortical processes. We conclude by proposing that PFC neurons selectively influence action encoding during conditions where actions toward obtaining a reward or avoiding harm are executed under a fog of fear and anxiety.
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Affiliation(s)
- David S Jacobs
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, United States
| | - Bita Moghaddam
- Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, United States.
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23
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Zou HW, Li ZL, Jing XY, Wang Y, Liu YJ, Li LF. The GABA(B1) receptor within the infralimbic cortex is implicated in stress resilience and vulnerability in mice. Behav Brain Res 2021; 406:113240. [PMID: 33727046 DOI: 10.1016/j.bbr.2021.113240] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 12/24/2022]
Abstract
Resilience is the capacity to maintain normal psychological and physical functions in the face of stress and adversity. Understanding how one can develop and enhance resilience is of great relevance to not only promoting coping mechanisms but also mitigating maladaptive stress responses in psychiatric illnesses such as depression. Preclinical studies suggest that GABA(B) receptors (GABA(B1) and GABA(B2)) are potential targets for the treatment of major depression. In this study, we assessed the functional role of GABA(B) receptors in stress resilience and vulnerability by using a chronic unpredictable stress (CUS) model in mice. As the medial prefrontal cortex (mPFC) plays a key role in the top-down modulation of stress responses, we focused our study on this brain structure. Our results showed that only approximately 41.9% of subjects exhibited anxiety- or despair-like behaviors after exposure to CUS. The vulnerable mice showed higher c-Fos expression in the infralimbic cortex (IL) subregion of the mPFC when exposed to a social stressor. Moreover, the expression of GABA(B1) but not GABA(B2) receptors was significantly downregulated in IL subregion of susceptible mice. Finally, we found that intra-IL administration of baclofen, a GABA(B) receptor agonist, rapidly relieved the social avoidance symptoms of the "stress-susceptible" mice. Taken together, our results show that the GABA(B1) receptor within the IL may play an important role in stress resilience and vulnerability, and thus open an avenue to develop novel, personalized approaches to promote stress resilience and treat stress-related psychiatric disorders.
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Affiliation(s)
- Hua-Wei Zou
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China
| | - Zi-Lin Li
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China
| | - Xiao-Yuan Jing
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China
| | - Yan Wang
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China
| | - Ying-Juan Liu
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China.
| | - Lai-Fu Li
- College of Life Science and Technology, Nanyang Normal University, Nanyang, 473061, China.
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24
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Kirouac GJ. The Paraventricular Nucleus of the Thalamus as an Integrating and Relay Node in the Brain Anxiety Network. Front Behav Neurosci 2021; 15:627633. [PMID: 33732118 PMCID: PMC7959748 DOI: 10.3389/fnbeh.2021.627633] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/28/2021] [Indexed: 12/25/2022] Open
Abstract
The brain anxiety network is composed of a number of interconnected cortical regions that detect threats and execute appropriate defensive responses via projections to the shell of the nucleus accumbens (NAcSh), dorsolateral region of the bed nucleus of the stria terminalis (BSTDL) and lateral region of the central nucleus of the amygdala (CeL). The paraventricular nucleus of the thalamus (PVT) is anatomically positioned to integrate threat- and arousal-related signals from cortex and hypothalamus and then relay these signals to neural circuits in the NAcSh, BSTDL, and CeL that mediate defensive responses. This review describes the anatomical connections of the PVT that support the view that the PVT may be a critical node in the brain anxiety network. Experimental findings are reviewed showing that the arousal peptides orexins (hypocretins) act at the PVT to promote avoidance of potential threats especially following exposure of rats to a single episode of footshocks. Recent anatomical and experimental findings are discussed which show that neurons in the PVT provide divergent projections to subcortical regions that mediate defensive behaviors and that the projection to the NAcSh is critical for the enhanced social avoidance displayed in rats exposed to footshocks. A theoretical model is proposed for how the PVT integrates cortical and hypothalamic signals to modulate the behavioral responses associated with anxiety and other challenging situations.
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Affiliation(s)
- Gilbert J. Kirouac
- Department of Oral Biology, Dr. Gerald Niznick College of Dentistry, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
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25
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Lee J, Lee K. Parvalbumin-expressing GABAergic interneurons and perineuronal nets in the prelimbic and orbitofrontal cortices in association with basal anxiety-like behaviors in adult mice. Behav Brain Res 2020; 398:112915. [PMID: 32949644 DOI: 10.1016/j.bbr.2020.112915] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/03/2020] [Accepted: 09/09/2020] [Indexed: 11/19/2022]
Abstract
Parvalbumin-expressing (PV+) GABAergic interneurons are the principal inhibitory interneurons in the cortex, and a decrease in their number or PV protein expression is associated with changes in brain function. PV+ neurons are surrounded by the perineuronal net (PNN), a reticular extracellular matrix structure surrounding the soma and proximal dendrites. Although the prefrontal cortex is critically involved in anxiety-like behavior, it is not known how cortical PV+ neurons enwrapped with PNN contribute to basal anxiety behavior. To address the issue, we employed Wisteria floribunda agglutinin (WFA) to label the PNN and measured the densities and PV immunofluorescence of PV+ neurons, including those enwrapped with PNN (i.e., PV+WFA+ neurons) in the orbitofrontal (OFC) and prelimbic cortices of mice whose basal anxiety levels had been assessed in the open field test. We found that these densities, but not PV expression according to immunofluorescence intensity, were positively correlated with the percentage of time spent and the distance traveled in the center of an open field. Thus, these data demonstrate that the densities of OFC PV+ and PV+WFA+ neurons are significantly inversely correlated with basal anxiety levels of adult mice measured in the open field test and may represent a target for future anxiolytic therapeutics.
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Affiliation(s)
- Juhyun Lee
- Laboratory for Behavioral Neural Circuitry and Physiology, Department of Anatomy, Brain Science & Engineering Institute, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
| | - Kyungmin Lee
- Laboratory for Behavioral Neural Circuitry and Physiology, Department of Anatomy, Brain Science & Engineering Institute, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea.
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26
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Rooney S, Sah A, Unger MS, Kharitonova M, Sartori SB, Schwarzer C, Aigner L, Kettenmann H, Wolf SA, Singewald N. Neuroinflammatory alterations in trait anxiety: modulatory effects of minocycline. Transl Psychiatry 2020; 10:256. [PMID: 32732969 PMCID: PMC7393101 DOI: 10.1038/s41398-020-00942-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 02/04/2023] Open
Abstract
High trait anxiety is a substantial risk factor for developing anxiety disorders and depression. While neuroinflammation has been identified to contribute to stress-induced anxiety, little is known about potential dysregulation in the neuroinflammatory system of genetically determined pathological anxiety or high trait anxiety individuals. We report microglial alterations in various brain regions in a mouse model of high trait anxiety (HAB). In particular, the dentate gyrus (DG) of the hippocampus of HABs exhibited enhanced density and average cell area of Iba1+, and density of phagocytic (CD68+/Iba1+) microglia compared to normal anxiety (NAB) controls. Minocycline was used to assess the capacity of a putative microglia 'inhibitor' in modulating hyperanxiety behavior of HABs. Chronic oral minocycline indeed reduced HAB hyperanxiety, which was associated with significant decreases in Iba1+ and CD68+Iba1+ cell densities in the DG. Addressing causality, it was demonstrated that longer (10 days), but not shorter (5 days), periods of minocycline microinfusions locally into the DG of HAB reduced Iba-1+ cell density and attenuated hyperanxiety-related behavior, indicating that neuroinflammation in the DG is at least partially involved in the maintenance of pathological anxiety. The present data reveal evidence of disturbances in the microglial system of individuals with high trait anxiety. Minocycline attenuated HAB hyperanxiety, likely by modulation of microglial activity within the DG. Thus, the present data suggest that drugs with microglia-targeted anti-inflammatory properties could be promising as novel alternative or complimentary anxiolytic therapeutic approaches in specific subgroups of individuals genetically predisposed to hyperanxiety.
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Affiliation(s)
- Sinead Rooney
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - Anupam Sah
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - Michael S Unger
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Maria Kharitonova
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - Simone B Sartori
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - Christoph Schwarzer
- Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Helmut Kettenmann
- Department of Cellular Neurosciences, Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Susanne A Wolf
- Department of Cellular Neurosciences, Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Department of Ophthalmology, Charité Universitätsmedizin, Berlin, Germany
| | - Nicolas Singewald
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria.
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27
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Victoriano G, Santos-Costa N, Mascarenhas DC, Nunes-de-Souza RL. Inhibition of the left medial prefrontal cortex (mPFC) prolongs the social defeat-induced anxiogenesis in mice: Attenuation by NMDA receptor blockade in the right mPFC. Behav Brain Res 2020; 378:112312. [PMID: 31629003 DOI: 10.1016/j.bbr.2019.112312] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/24/2019] [Accepted: 10/16/2019] [Indexed: 12/15/2022]
Abstract
Chemical inhibition and nitrergic stimulation of the left and right medial prefrontal cortex (L and RmPFC), respectively, provoke anxiety in mice. Moreover, LmPFC inhibition immediately followed by a single social defeat stress (SDS) led to anxiogenesis in mice exposed to the elevated plus maze (EPM) 24 h later. Given that glutamate NMDA (N-methyl-D-aspartate) receptors are densely present in the mPFC, we investigated (i) the time course of LmPFC inhibition + SDS-induced anxiogenesis and (ii) the effects of intra-RmPFC injection of AP-7 (a NMDA receptor antagonist) on this long-lasting anxiety. Male Swiss mice received intra-LmPFC injection of CoCl2 (1 mM) and 10 min later were subjected to a single SDS episode and then (i) exposed to the EPM 2, 5, or 10 days later or (ii) 2 days later, received intra-RmPFC injection of AP-7 (0.05 nmol) and were exposed to the EPM to observe the percentage of open arm entries and time (%OE; %OT) and frequency of closed arm entries (CE). Dorsal but not ventral LmPFC inhibition + SDS reduced open arm exploration 2, 5, and 10 days later relative to that of saline-treated or non-defeated mice. Moreover, this effect is not due to locomotor impairment as assessed using the general activity. Intra-RmPFC AP-7 injection 2 days after LmPFC inhibition + SDS prevented this type of anxiogenesis. These results suggest that the integrity of the LmPFC is important for mice to properly cope with SDS, and that NMDA receptor blockade in the RmPFC facilitates resilience to SDS-induced anxiogenesis in mice.
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Affiliation(s)
- Gabriel Victoriano
- Joint Graduate Program in Physiological Sciences, UFSCar/UNESP - São Carlos, SP, 13565-905, Brazil; School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, 14800-903, Araraquara, SP, Brazil
| | - Nathália Santos-Costa
- Joint Graduate Program in Physiological Sciences, UFSCar/UNESP - São Carlos, SP, 13565-905, Brazil; School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, 14800-903, Araraquara, SP, Brazil
| | - Diego Cardozo Mascarenhas
- School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, 14800-903, Araraquara, SP, Brazil
| | - Ricardo Luiz Nunes-de-Souza
- Joint Graduate Program in Physiological Sciences, UFSCar/UNESP - São Carlos, SP, 13565-905, Brazil; School of Pharmaceutical Sciences, Univ. Estadual Paulista - UNESP, 14800-903, Araraquara, SP, Brazil.
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Majcher-Maślanka I, Solarz A, Chocyk A. Maternal separation disturbs postnatal development of the medial prefrontal cortex and affects the number of neurons and glial cells in adolescent rats. Neuroscience 2019; 423:131-147. [PMID: 31705889 DOI: 10.1016/j.neuroscience.2019.10.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/20/2019] [Accepted: 10/18/2019] [Indexed: 12/30/2022]
Abstract
Adolescence is a period of extensive brain maturation. In particular, the regions of the medial prefrontal cortex (mPFC) undergo intense structural and functional refinement during adolescence. Disturbances in mPFC maturation have been implicated in the emergence of multiple psychopathologies during adolescence. One of the essential risk factors for the development of mental illness in adolescence is early-life stress (ELS), which may interfere with brain maturation. However, knowledge of the mechanisms by which ELS affects mPFC maturation and functioning in adolescents is very limited. In the present study, we applied a maternal separation (MS) procedure in rats to model ELS and studied its effect on the number of neurons and glial cells in the prelimbic region of the mPFC (PLC) of adolescent rats. Moreover, the expression of markers of cell proliferation and apoptosis was also studied. We found that MS rats had more neurons, astrocytes, and NG2-glial cells in the PLC. In contrast, the number of microglial cells was reduced in MS rats. These changes were accompanied by the decreased expression of proapoptotic genes and the increased expression of some prosurvival genes. Concurrently, MS did not affect cell proliferation in adolescents. Moreover, MS induced anxiety-like behaviors, but not anhedonic-like behavior, in adolescents. These results suggest that ELS may disturb neurodevelopmental apoptosis of neurons and early-postnatal proliferation and/or apoptosis of different populations of glial cells in the PLC. ELS-induced aberrations in the postnatal maturation of the PLC may affect cortical network organization and functioning and determine vulnerability to psychopathologies in adolescents.
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Affiliation(s)
- Iwona Majcher-Maślanka
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, 31-343 Kraków, Smętna Street 12, Poland
| | - Anna Solarz
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, 31-343 Kraków, Smętna Street 12, Poland
| | - Agnieszka Chocyk
- Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, 31-343 Kraków, Smętna Street 12, Poland.
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Nagase H, Saitoh A. Research and development of κ opioid receptor agonists and δ opioid receptor agonists. Pharmacol Ther 2019; 205:107427. [PMID: 31654658 DOI: 10.1016/j.pharmthera.2019.107427] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 09/30/2019] [Indexed: 12/28/2022]
Abstract
Delta opioid delta receptor (DOP) agonists were expected to be analgesics and many researchers tried to develop the SNC80 derivatives. However, the derivatives were dropped at the stage of early clinical trials because of undesirable side effects and weak analgesia. On the other hand, DOP agonists have been proposed as attractive candidates for the novel psychotropic drugs. We recently succeeded in synthesizing a novel selective DOP agonist KNT-127. KNT-127 produced neither catalepsy nor convulsive effects. We have demonstrated that KNT-127 has potent anxiolytic-like effect in rat models of innate anxiety. This anxiolytic-like effect was independent from known adverse effect of benzodiazepine, such as memory impairment, motor coordination deficits, and ethanol interactions. We have also demonstrated that KNT-127 showed potent and rapid antidepressant-like effects in rat models of depression. This antidepressant-like effect was independent from known adverse effect of selective serotonin reuptake inhibitor (SSRI), such as digestive symptoms. Therefore, we propose that DOP should be considered as an attractive target for the development of novel psychotropic drugs, without producing the adverse effects associated with benzodiazepine anxiolytics and SSRI antidepressants. Very recently, we developed another delta agonist NC-2800 with a different structure. NC-2800 is now in the preclinical stage using the CiCLE fund supported by AMED (Japanese Agency for Medical Research and Development).
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Affiliation(s)
- Hiroshi Nagase
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Akiyoshi Saitoh
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, 278-8510, Japan
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Abstract
Regions of the prefrontal and cingulate cortices play important roles in the regulation of behaviors elicited by threat. Dissecting out their differential involvement will greatly increase our understanding of the varied etiology of symptoms of anxiety. I review evidence for altered activity within the major divisions of the prefrontal cortex, including orbitofrontal, ventrolateral, dorsolateral, and ventromedial sectors, along with the anterior cingulate cortex in patients with clinical anxiety. This review is integrated with a discussion of current knowledge about the causal role of these different prefrontal and cingulate regions in threat-elicited behaviors from experimental studies in rodents and monkeys. I highlight commonalities and inconsistencies between species and discuss the current state of our translational success in relating findings across species. Finally, I identify key issues that, if addressed, may improve that success in the future.
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Affiliation(s)
- Angela C. Roberts
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, United Kingdom;
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Abstract
The medial prefrontal cortex (mPFC) is a crucial cortical region that integrates information from numerous cortical and subcortical areas and converges updated information to output structures. It plays essential roles in the cognitive process, regulation of emotion, motivation, and sociability. Dysfunction of the mPFC has been found in various neurological and psychiatric disorders, such as depression, anxiety disorders, schizophrenia, autism spectrum disorders, Alzheimer's disease, Parkinson's disease, and addiction. In the present review, we summarize the preclinical and clinical studies to illustrate the role of the mPFC in these neurological diseases.
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Affiliation(s)
- Pan Xu
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
| | - Ai Chen
- Department of Pediatrics, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan China
| | - Yipeng Li
- Department of Biomedical Engineering, The George Washington University, Washington, District of Columbia
| | - Xuezhi Xing
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
| | - Hui Lu
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
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32
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Alexander L, Clarke HF, Roberts AC. A Focus on the Functions of Area 25. Brain Sci 2019; 9:E129. [PMID: 31163643 PMCID: PMC6627335 DOI: 10.3390/brainsci9060129] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 12/27/2022] Open
Abstract
Subcallosal area 25 is one of the least understood regions of the anterior cingulate cortex, but activity in this area is emerging as a crucial correlate of mood and affective disorder symptomatology. The cortical and subcortical connectivity of area 25 suggests it may act as an interface between the bioregulatory and emotional states that are aberrant in disorders such as depression. However, evidence for such a role is limited because of uncertainty over the functional homologue of area 25 in rodents, which hinders cross-species translation. This emphasizes the need for causal manipulations in monkeys in which area 25, and the prefrontal and cingulate regions in which it is embedded, resemble those of humans more than rodents. In this review, we consider physiological and behavioral evidence from non-pathological and pathological studies in humans and from manipulations of area 25 in monkeys and its putative homologue, the infralimbic cortex (IL), in rodents. We highlight the similarities between area 25 function in monkeys and IL function in rodents with respect to the regulation of reward-driven responses, but also the apparent inconsistencies in the regulation of threat responses, not only between the rodent and monkey literatures, but also within the rodent literature. Overall, we provide evidence for a causal role of area 25 in both the enhanced negative affect and decreased positive affect that is characteristic of affective disorders, and the cardiovascular and endocrine perturbations that accompany these mood changes. We end with a brief consideration of how future studies should be tailored to best translate these findings into the clinic.
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Affiliation(s)
- Laith Alexander
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, UK.
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK.
| | - Hannah F Clarke
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, UK.
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK.
| | - Angela C Roberts
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, UK.
- Behavioural and Clinical Neuroscience Institute, Department of Psychology, University of Cambridge, Cambridge CB2 3EB, UK.
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33
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Song T, Wu H, Li R, Xu H, Rao X, Gao L, Zou Y, Lei H. Repeated fluoxetine treatment induces long-lasting neurotrophic changes in the medial prefrontal cortex of adult rats. Behav Brain Res 2019; 365:114-124. [PMID: 30849415 DOI: 10.1016/j.bbr.2019.03.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 03/02/2019] [Accepted: 03/04/2019] [Indexed: 01/23/2023]
Abstract
Fluoxetine (Flx), a selective serotonin reuptake inhibitor, is extensively used to treat mood and anxiety disorders. Previous animal studies have shown that early-life exposure to Flx results in long-lasting behavioral alterations and neuroplasticity in the hippocampus and cortex, which may persist into adulthood. It remains unclear whether repeated Flx treatment in normal adult animals can induce lasting neuroplasticity and behavioral alterations persisting long beyond the treatment period. In this study, young adult rats (about 9 weeks old) were treated with Flx (10 mg/kg body weight, twice daily) for 15 consecutive days, and the effects of Flx on medial prefrontal cortex (mPFC) neuroplasticity and mPFC-related behaviors were assessed 20 days after the last injection. It was observed that the mPFC of Flx-treated rats had significant increases in the number of 5-bromodeoxyuridine-positive (BrdU+) cells, dendritic complexity/spine density in layer II/III pyramidal neurons, and brain-derived neurotrophic factor (BDNF)/tropomyosin receptor kinase B (TrkB) expression levels, as well as a significant decrease in the number of parvalbumin-positive (PV+) interneurons. The Flx-treated rats exhibited higher motivation to explore new environments, evidenced by a significantly increased number of entries into the novel arm in the Y-maze test. However, they did not show any significant changes in the anhedonia and anxiety levels measured by sucrose preference and elevated plus maze tests respectively. In conclusion, repeated Flx treatment, with the paradigm used, induces long-lasting neuroplastic changes in the mPFC of normal adult rats; such changes and related behavioral manifestations may persist up to 20 days after the last dose.
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Affiliation(s)
- Tao Song
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR China; National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Hao Wu
- Department of Radiology, Institute of Surgery Research, the Third Affiliated Hospital, Army Medical University, Chongqing, 400042, PR China
| | - Ronghui Li
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR China; National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Hui Xu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Xiaoping Rao
- Center for Brain Science, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Lifeng Gao
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China; Department of Medical Imaging, School of Medicine, Jianghan University, Wuhan 430056, PR China
| | - Yijuan Zou
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR China; National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China
| | - Hao Lei
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR China; National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, PR China.
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34
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Roet M, Pol S, Schaper FLWVJ, Hoogland G, Jahanshahi A, Temel Y. Severe seizures as a side effect of deep brain stimulation in the dorsal peduncular cortex in a rat model of depression. Epilepsy Behav 2019; 92:269-275. [PMID: 30731292 DOI: 10.1016/j.yebeh.2019.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/29/2018] [Accepted: 01/04/2019] [Indexed: 12/14/2022]
Abstract
Deep brain stimulation (DBS) has shown to have antidepressant effects in both human trials and animal studies. However, the optimal target and the underlying therapeutic mechanisms remain to be determined. In this study, we investigated if high frequency (HF) DBS in the dorsal peduncular cortex (DPC) alleviates depressive-like behavior in an experimental model of depression. Surprisingly, HF DBS in the DPC caused acute induction of seizures in ~40% of animals stimulated with clinically relevant stimulation parameters. Reducing the stimulation's amplitude by 50% did not alter seizure occurrence. Electroencephalographic (EEG) recordings showed seizures up to Racine stage IV lasting up to 4 min after cessation of stimulation. We conclude that HF DBS in the DPC is not suitable for mood-related experiments in rats but could be a potential model for seizure induction.
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Affiliation(s)
- Milaine Roet
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands.
| | - Sylvana Pol
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands
| | - Frédéric L W V J Schaper
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands
| | - Govert Hoogland
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands
| | - Ali Jahanshahi
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands
| | - Yasin Temel
- School for Mental Health and Neuroscience, Department of Neurosurgery, The Netherlands; School for Mental Health and Neuroscience, European Graduate School of Neuroscience (EURON), The Netherlands.
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35
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Berg L, Eckardt J, Masseck OA. Enhanced activity of pyramidal neurons in the infralimbic cortex drives anxiety behavior. PLoS One 2019; 14:e0210949. [PMID: 30677060 PMCID: PMC6345483 DOI: 10.1371/journal.pone.0210949] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 01/06/2019] [Indexed: 01/17/2023] Open
Abstract
We show that in an animal model of anxiety the overall excitation, particularly in the infralimbic region of the medial prefrontal cortex (IL), is increased and that the activity ratio between excitatory pyramidal neurons and inhibitory interneurons (AR PN/IN) is shifted towards excitation. The same change in AR PN/IN is evident for wildtype mice, which have been exposed to an anxiety stimulus. We hypothesize, that an elevated activity and the imbalance of excitation (PN) and inhibition (IN) within the neuronal microcircuitry of the prefrontal cortex is responsible for anxiety behaviour and employed optogenetic methods in freely moving mice to verify our findings. Consistent with our hypothesis elevation of pyramidal neuron activity in the infralimbic region of the prefrontal cortex significantly enhanced anxiety levels in several behavioural tasks by shifting the AR PN/IN to excitation, without affecting motor behaviour, thus revealing a novel mechanism by which anxiety is facilitated.
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Affiliation(s)
- Laura Berg
- Advanced Fluorescence Microscopy, Ruhr University Bochum, Bochum, Germany
| | - Josephine Eckardt
- Department of Systems Neuroscience Ruhr University Bochum, Bochum, Germany
| | - Olivia Andrea Masseck
- Advanced Fluorescence Microscopy, Ruhr University Bochum, Bochum, Germany
- University of Bremen, Synthetic Biology, Bremen, Germany
- * E-mail:
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36
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Saitoh A, Soda A, Kayashima S, Yoshizawa K, Oka JI, Nagase H, Yamada M. A delta opioid receptor agonist, KNT-127, in the prelimbic medial prefrontal cortex attenuates glial glutamate transporter blocker-induced anxiety-like behavior in mice. J Pharmacol Sci 2018; 138:176-183. [DOI: 10.1016/j.jphs.2018.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/04/2018] [Accepted: 09/20/2018] [Indexed: 11/16/2022] Open
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37
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A Systematic Search and Mapping Review of Studies on Intracerebral Microdialysis of Amino Acids, and Systematized Review of Studies on Circadian Rhythms. J Circadian Rhythms 2018; 16:12. [PMID: 30483349 PMCID: PMC6196574 DOI: 10.5334/jcr.172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background: Microdialysis can be used to measure amino acids in the extracellular space in vivo, based on the principle of diffusion. Variations in experimental set-up result in variations in baseline levels of the compounds measured. Variations may also be due to circadian rhythms. Method: We systematically searched and mapped the literature on all studies reporting baseline microdialysis measurements of histamine and the amino acids asparagine, aspartate, GABA, glutamate, glutamine, glycine, proline and taurine. We fully reviewed the studies describing circadian rhythms for histamine and the selected amino acids. Results: We retrieved 2331 papers describing baseline measurements of one or more of the compounds of interest. We provide a numerical summary and lists of the publications by compound. We retrieved 11 references describing studies on the circadian rhythms of the compounds of interest. Aspartate, glutamate and histamine are generally higher during the dark than during the light phase in nocturnal rodents. For glutamine, no rhythmicity was observed. For GABA, the results were too inconsistent to generalise. For asparagine, glycine, proline and taurine, insufficient data are available. Conclusion: The literature on intracerebral microdialysis measurements of the amino acids is vast, but certain primary studies are still warranted. Future systematic reviews on the individual compounds can shed light on the effects of experimental variations on baseline concentrations.
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38
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Hui CW, St-Pierre MK, Detuncq J, Aumailley L, Dubois MJ, Couture V, Skuk D, Marette A, Tremblay JP, Lebel M, Tremblay MÈ. Nonfunctional mutant Wrn protein leads to neurological deficits, neuronal stress, microglial alteration, and immune imbalance in a mouse model of Werner syndrome. Brain Behav Immun 2018; 73:450-469. [PMID: 29908963 DOI: 10.1016/j.bbi.2018.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/25/2018] [Accepted: 06/06/2018] [Indexed: 12/30/2022] Open
Abstract
Werner syndrome (WS) is a premature aging disorder caused by mutations in a RecQ-family DNA helicase, WRN. Mice lacking part of the helicase domain of the WRN orthologue exhibit many phenotypic features of WS, including metabolic abnormalities and a shorter lifespan. Yet, little is known about the impact of WRN mutations on the central nervous system in both humans and mouse models of WS. In the current study, we have performed a longitudinal behavioral assessment on mice bearing a Wrn helicase deletion. Behavioral tests demonstrated a loss of motor activity and coordination, reduction in perception, increase in repetitive behavior, and deficits in both spatial and social novelty memories in Wrn mutant mice compared to age-matched wild type mice. These neurological deficits were associated with biochemical and histological changes in the brain of aged Wrn mutant mice. Microglia, resident immune cells that regulate neuronal plasticity and function in the brain, were hyper-ramified in multiple regions involved with the behavioral deficits of Wrn mutant mice. Furthermore, western analyses indicated that Wrn mutant mice exhibited an increase of oxidative stress markers in the prefrontal cortex. Supporting these findings, electron microscopy studies revealed increased cellular aging and oxidative stress features, among microglia and neurons respectively, in the prefrontal cortex of aged Wrn mutant mice. In addition, multiplex immunoassay of serum identified significant changes in the expression levels of several pro- and anti-inflammatory cytokines. Taken together, these findings indicate that microglial dysfunction and neuronal oxidative stress, associated with peripheral immune system alterations, might be important driving forces leading to abnormal neurological symptoms in WS thus suggesting potential therapeutic targets for interventions.
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Affiliation(s)
- Chin Wai Hui
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Marie-Kim St-Pierre
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Jérôme Detuncq
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Lucie Aumailley
- Axe endocrinologie/néphrologie, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Marie-Julie Dubois
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 Chemin Sainte-Foy, Québec City, Québec G1V 4G5, Canada
| | - Vanessa Couture
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Daniel Skuk
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - André Marette
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, 2725 Chemin Sainte-Foy, Québec City, Québec G1V 4G5, Canada
| | - Jacques P Tremblay
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada
| | - Michel Lebel
- Axe endocrinologie/néphrologie, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada.
| | - Marie-Ève Tremblay
- Axe neurosciences, Centre de recherche du CHU de Québec, Centre Hospitalier de l'Université Laval (CHUL), 2705 Laurier Blvd., Québec City, Québec G1V 4G2, Canada.
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Medendorp WE, Petersen ED, Pal A, Wagner LM, Myers AR, Hochgeschwender U, Jenrow KA. Altered Behavior in Mice Socially Isolated During Adolescence Corresponds With Immature Dendritic Spine Morphology and Impaired Plasticity in the Prefrontal Cortex. Front Behav Neurosci 2018; 12:87. [PMID: 29867388 PMCID: PMC5954042 DOI: 10.3389/fnbeh.2018.00087] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 04/20/2018] [Indexed: 11/29/2022] Open
Abstract
Mice socially isolated during adolescence exhibit behaviors of anxiety, depression and impaired social interaction. Although these behaviors are well documented, very little is known about the associated neurobiological changes that accompany these behaviors. It has been hypothesized that social isolation during adolescence alters the development of the prefrontal cortex, based on similar behavioral abnormalities observed in isolated mice and those with disruption of this structure. To establish relationships between behavior and underlying neurobiological changes in the prefrontal cortex, Thy-1-GFP mice were isolated from weaning until adulthood and compared to group-housed littermates regarding behavior, electrophysiological activity and dendritic morphology. Results indicate an immaturity of dendritic spines in single housed animals, with dendritic spines appearing smaller and thinner. Single housed mice additionally show impaired plasticity through measures of long-term potentiation. Together these findings suggest an altered development and impairment of the prefrontal cortex of these animals underlying their behavioral characteristics.
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Affiliation(s)
- William E Medendorp
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States.,College of Medicine, Central Michigan University, Mount Pleasant, MI, United States
| | - Eric D Petersen
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States.,College of Medicine, Central Michigan University, Mount Pleasant, MI, United States
| | - Akash Pal
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States.,College of Medicine, Central Michigan University, Mount Pleasant, MI, United States
| | - Lina-Marie Wagner
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States
| | - Alexzander R Myers
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States
| | - Ute Hochgeschwender
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States.,College of Medicine, Central Michigan University, Mount Pleasant, MI, United States
| | - Kenneth A Jenrow
- Neuroscience Program, Central Michigan University, Mount Pleasant, MI, United States.,Department of Psychology, Central Michigan University, Mount Pleasant, MI, United States
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40
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Saitoh A, Suzuki S, Soda A, Ohashi M, Yamada M, Oka JI, Nagase H, Yamada M. The delta opioid receptor agonist KNT-127 in the prelimbic medial prefrontal cortex attenuates veratrine-induced anxiety-like behaviors in mice. Behav Brain Res 2018; 336:77-84. [DOI: 10.1016/j.bbr.2017.08.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/21/2017] [Accepted: 08/28/2017] [Indexed: 10/19/2022]
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41
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Sabihi S, Dong SM, Maurer SD, Post C, Leuner B. Oxytocin in the medial prefrontal cortex attenuates anxiety: Anatomical and receptor specificity and mechanism of action. Neuropharmacology 2017; 125:1-12. [PMID: 28655609 DOI: 10.1016/j.neuropharm.2017.06.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/21/2017] [Accepted: 06/23/2017] [Indexed: 01/12/2023]
Abstract
Numerous studies in animals and humans have established that oxytocin (OT) reduces anxiety. In rats, the prelimbic (PL) subregion of the medial prefrontal cortex (mPFC) is among the brain areas implicated in the anxiolytic actions of OT. However, questions remain about the anatomical and receptor specificity of OT and its mechanism of action. Here we assessed whether the regulation of anxiety by mPFC OT is restricted to the PL subregion and evaluated whether oxytocin receptor (OTR) activation is required for OT to have an anxiolytic effect. We also examined whether OT interacts with GABA in the mPFC to reduce anxiety and investigated the extent to which OT in the mPFC affects activation of mPFC GABA neurons as well as neuronal activation in the amygdala, a primary target of the mPFC which is part of the neural network regulating anxiety. We found that OT reduced anxiety-like behavior when delivered to the PL, but not infralimbic or anterior cingulate subregions of the mPFC. The anxiolytic effect of OT in the PL mPFC was blocked by pretreatment with an OTR, but not a vasopressin receptor, antagonist as well as with a GABAA receptor antagonist. Lastly, administration of OT to the PL mPFC was accompanied by increased activation of GABA neurons in the PL mPFC and altered neuronal activation of the amygdala following anxiety testing. These results demonstrate that OT in the PL mPFC attenuates anxiety-related behavior and may do so by engaging GABAergic neurons which ultimately modulate downstream brain regions implicated in anxiety.
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Affiliation(s)
- Sara Sabihi
- The Ohio State University, Department of Psychology, Columbus, OH 43210, United States
| | - Shirley M Dong
- The Ohio State University, Department of Psychology, Columbus, OH 43210, United States
| | - Skyler D Maurer
- The Ohio State University, Department of Psychology, Columbus, OH 43210, United States
| | - Caitlin Post
- The Ohio State University, Department of Psychology, Columbus, OH 43210, United States
| | - Benedetta Leuner
- The Ohio State University, Department of Psychology, Columbus, OH 43210, United States; The Ohio State University, Department of Neuroscience, Columbus, OH 43210, United States; The Ohio State University, Behavioral Neuroendocrinology Group, Columbus, OH 43210, United States.
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42
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Campos AC, Fogaça MV, Scarante FF, Joca SRL, Sales AJ, Gomes FV, Sonego AB, Rodrigues NS, Galve-Roperh I, Guimarães FS. Plastic and Neuroprotective Mechanisms Involved in the Therapeutic Effects of Cannabidiol in Psychiatric Disorders. Front Pharmacol 2017; 8:269. [PMID: 28588483 PMCID: PMC5441138 DOI: 10.3389/fphar.2017.00269] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 05/01/2017] [Indexed: 12/25/2022] Open
Abstract
Beneficial effects of cannabidiol (CBD) have been described for a wide range of psychiatric disorders, including anxiety, psychosis, and depression. The mechanisms responsible for these effects, however, are still poorly understood. Similar to clinical antidepressant or atypical antipsychotic drugs, recent findings clearly indicate that CBD, either acutely or repeatedly administered, induces plastic changes. For example, CBD attenuates the decrease in hippocampal neurogenesis and dendrite spines density induced by chronic stress and prevents microglia activation and the decrease in the number of parvalbumin-positive GABA neurons in a pharmacological model of schizophrenia. More recently, it was found that CBD modulates cell fate regulatory pathways such as autophagy and others critical pathways for neuronal survival in neurodegenerative experimental models, suggesting the potential benefit of CBD treatment for psychiatric/cognitive symptoms associated with neurodegeneration. These changes and their possible association with CBD beneficial effects in psychiatric disorders are reviewed here.
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Affiliation(s)
- Alline C Campos
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Manoela V Fogaça
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Franciele F Scarante
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Sâmia R L Joca
- Department of Physical and Chemical, School of Pharmaceutical Science of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Amanda J Sales
- Department of Physical and Chemical, School of Pharmaceutical Science of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Felipe V Gomes
- Department of Neuroscience, University of PittsburghPittsburgh, PA, United States
| | - Andreza B Sonego
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Naielly S Rodrigues
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Ismael Galve-Roperh
- Department of Biochemistry and Molecular Biology I, School of Biology, Complutense UniversityMadrid, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Instituto de Universitario de Investigación en Neuroquímica and Instituto Ramón y Cajal de Investigación SanitariaMadrid, Spain
| | - Francisco S Guimarães
- Department of Pharmacology, Centre for Interdisciplinary Research on Applied Neurosciences (NAPNA), School of Medicine of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
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Yang H, Jung S, Seo J, Khalid A, Yoo JS, Park J, Kim S, Moon J, Lee ST, Jung KH, Chu K, Lee SK, Jeon D. Altered behavior and neural activity in conspecific cagemates co-housed with mouse models of brain disorders. Physiol Behav 2016; 163:167-176. [DOI: 10.1016/j.physbeh.2016.05.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/13/2016] [Accepted: 05/16/2016] [Indexed: 11/29/2022]
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