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Tripathi K, Hazra S, Hazra JD, Mandel S, Anunu R, Kriebel M, Volkmer H, Richter-Levin G. Selective knockdown of GABAA-α2 subunit in the dorsal dentate gyrus in adulthood induces anxiety, learning and memory deficits and impairs synaptic plasticity. Eur J Neurosci 2024. [PMID: 38858171 DOI: 10.1111/ejn.16441] [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: 08/14/2023] [Revised: 04/13/2024] [Accepted: 05/29/2024] [Indexed: 06/12/2024]
Abstract
Animal studies and clinical trials suggest that maintenance of gamma-aminobutyric acid (GABA)-ergic activity may be crucial in coping with stressful conditions, anxiety and mood disorders. Drugs highly efficient in promoting anxiolysis were shown to activate this system, particularly via the α2-subunit of type A receptors (GABAA α2). Given the high expression of GABAA α2 in the dentate gyrus (DG) sub-field of the hippocampus, we sought to examine whether manipulation of the α2 subunit in this area will evoke changes in emotional behaviour, memory and learning as well as in synaptic plasticity. We found that knockdown of GABAAα2 receptor specifically in the dorsal DG of rats caused increased anxiety without affecting locomotor activity. Spatial memory and learning in the Morris water maze were also impaired in GABAAα2 receptor knocked down rats, an effect accompanied by alterations in synaptic plasticity, as assessed by long-term potentiation in the DG. Our findings provide further support to the notion that emotional information processing in the hippocampus may be controlled, at least in part, via the inhibitory GABAA α2 receptor subunit, opening a potential avenue for early interventions from pre- puberty into adulthood, as a strategy for controlling anxiety-related psychopathology.
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Affiliation(s)
- Kuldeep Tripathi
- Sagol Department of Neurobiology, University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
- Psychology Department, University of Haifa, Haifa, Israel
| | - Somoday Hazra
- Sagol Department of Neurobiology, University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
- Psychology Department, University of Haifa, Haifa, Israel
| | - Joyeeta Dutta Hazra
- Sagol Department of Neurobiology, University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
- Psychology Department, University of Haifa, Haifa, Israel
| | - Silvia Mandel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
| | - Ruchi Anunu
- Sagol Department of Neurobiology, University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
- Psychology Department, University of Haifa, Haifa, Israel
| | - Martin Kriebel
- Department of Molecular Biology, Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany
| | - Hansjurgen Volkmer
- Department of Molecular Biology, Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany
| | - Gal Richter-Levin
- Sagol Department of Neurobiology, University of Haifa, Haifa, Israel
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, Israel
- Psychology Department, University of Haifa, Haifa, Israel
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Isaieva IM, Isaiev AM, Korobtsova NV, Nadon VV, Puchkovska II. Aggressive parenting: social, medical and legal aspects. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2024; 77:144-152. [PMID: 38431819 DOI: 10.36740/wlek202401118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
OBJECTIVE Aim: To examine the impacts of aggressive parenting on physical, mental and emotional development; outcomes for society; possible ways of prevention of children' rights or health violation and responsibility of parents to optimize well-being of children. PATIENTS AND METHODS Materials and Methods: The analysis of scientific data has been conducted on the basis of PubMed, Scopus and Web of Science databases in order to collect the existed results of researches about social and medical aspects of impact of aggressive parenting. The formal-legal method was used to interpret the provisions of legislation regarding the protection of personal non-property rights and responsibilities of parents and children. CONCLUSION Conclusions: Aggressive parenting affects children of all ages and is associated with chronic stress and long-term negative impacts on physical development, cognitive and behavioral dysfunction, socioemotional difficulties, social and psychological dysfunction in adulthood. Aggressive parenting triggers a child' aggressive behavior which is considered as a predictor of adult's criminality. From a legal standpoint, aggressive parenting is a form of violation of the responsibility of parents to educate a child, which is an element of family legal relations regulated by the norms of the family law institution known as ≪Personal non-property rights and responsibilities of parents and children". The definition of aggressive parenting has been defined with its legal features and characteristics. Effective prevention methods should be directed to predict possible further parental violence, intervention programs to reduce outcomes of aggressive parenting and to improve the ways of responsibility in procedural and material aspects of law.
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Affiliation(s)
| | - Arsen M Isaiev
- YAROSLAV MUDRYI NATIONAL LAW UNIVERSITY, KHARKIV, UKRAINE
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Liu L, Luo Z, Mai Y, Lu Y, Sun Z, Chen J, Zeng T, Chen L, Liu Z, Yang H, Xu Q, Lan L, Tang C. Dexmedetomidine relieves inflammatory pain by enhancing GABAergic synaptic activity in pyramidal neurons of the anterior cingulate cortex. Neuropharmacology 2023; 240:109710. [PMID: 37683885 DOI: 10.1016/j.neuropharm.2023.109710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/23/2023] [Accepted: 09/03/2023] [Indexed: 09/10/2023]
Abstract
Pyramidal neuron (Pyn) hyperactivity in the anterior cingulate cortex (ACC) is involved in the modulation of pain. Previous studies indicate that the activation of α2 adrenoceptors (α2-ARs) by dexmedetomidine (DEX) is a safe and effective means of alleviating multiple types of pain. Here, we showed that systemically administered DEX can ameliorate the inflammatory pain induced by hindpaw injection of formalin (FA) and further examined the molecular and synaptic mechanisms of this DEX-elicited antinociceptive effect. We found that FA caused an increase in c-Fos expression in contralateral layer 2/3 (L2/3) ACC, and that intra-ACC infusion of DEX could also relieve phase 2 inflammatory pain behavior. DEX elicited an increase in the amplitude and frequency of miniature inhibitory post-synaptic currents (mIPSCs) and evoked IPSC amplitude, as well as a reduction in the hyperexcitability and both paired-pulse and excitation/inhibition ratios in contralateral L2/3 ACC Pyns of FA mice. These electrophysiological effects were associated with the upregulation of GABA A receptor (GABAAR) subunits. The interaction of phosphorylated Akt (p-Akt) with GABAAR subunits increased in the ACC following administration of DEX. These results suggest that DEX treatment reduces hyperactivity and enhances GABAergic inhibitory synaptic transmission in ACC Pyns, which produces analgesic effects by increasing GABAAR levels and activating the Akt signaling pathway.
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Affiliation(s)
- Ling Liu
- Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China; South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zhihao Luo
- Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yuanying Mai
- Department of Nursing, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Yi Lu
- Department of Anesthesiology, The Affiliated Traditional Chinese Medicine Hospital of Guangzhou Medical University, Guangzhou, 510130, China
| | - Zhaoxia Sun
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Jianfeng Chen
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Tianyu Zeng
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Lei Chen
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Zihao Liu
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Hanyu Yang
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Qin Xu
- Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Lan Lan
- Department of Anesthesiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China.
| | - Chunzhi Tang
- Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Zhang L, Shi W, Liu J, Chen K, Zhang G, Zhang S, Cong B, Li Y. Interleukin 6 (IL-6) Regulates GABAA Receptors in the Dorsomedial Hypothalamus Nucleus (DMH) through Activation of the JAK/STAT Pathway to Affect Heart Rate Variability in Stressed Rats. Int J Mol Sci 2023; 24:12985. [PMID: 37629166 PMCID: PMC10455568 DOI: 10.3390/ijms241612985] [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: 07/17/2023] [Revised: 08/09/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
The dorsomedial hypothalamus nucleus (DMH) is an important component of the autonomic nervous system and plays a critical role in regulating the sympathetic outputs of the heart. Stress alters the neuronal activity of the DMH, affecting sympathetic outputs and triggering heart rate variability. However, the specific molecular mechanisms behind stress leading to abnormal DMH neuronal activity have still not been fully elucidated. Therefore, in the present study, we successfully constructed a stressed rat model and used it to investigate the potential molecular mechanisms by which IL-6 regulates GABAA receptors in the DMH through activation of the JAK/STAT pathway and thus affects heart rate variability in rats. By detecting the c-Fos expression of neurons in the DMH and electrocardiogram (ECG) changes in rats, we clarified the relationship between abnormal DMH neuronal activity and heart rate variability in stressed rats. Then, using ELISA, immunohistochemical staining, Western blotting, RT-qPCR, and RNAscope, we further explored the correlation between the IL-6/JAK/STAT signaling pathway and GABAA receptors. The data showed that an increase in IL-6 induced by stress inhibited GABAA receptors in DMH neurons by activating the JAK/STAT signaling pathway, while specific inhibition of the JAK/STAT signaling pathway using AG490 obviously reduced DMH neuronal activity and improved heart rate variability in rats. These findings suggest that IL-6 regulates the expression of GABAA receptors via the activation of the JAK/STAT pathway in the DMH, which may be an important cause of heart rate variability in stressed rats.
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Affiliation(s)
| | | | | | | | | | | | - Bin Cong
- Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Department of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China; (L.Z.); (W.S.); (J.L.); (K.C.); (G.Z.); (S.Z.)
| | - Yingmin Li
- Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Department of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China; (L.Z.); (W.S.); (J.L.); (K.C.); (G.Z.); (S.Z.)
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Wang X, Su Y, Cai Z, Xu Y, Wu X, Al Rudaisat M, Hua C, Chen S, Lai L, Cheng H, Song Y, Zhou Q. γ-Aminobutyric acid promotes the inhibition of hair growth induced by chronic restraint stress. Life Sci 2023; 317:121439. [PMID: 36731645 DOI: 10.1016/j.lfs.2023.121439] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/11/2023] [Accepted: 01/22/2023] [Indexed: 02/01/2023]
Abstract
Stress plays a critical role in hair loss, although the underlying mechanisms are largely unknown. γ-aminobutyric acid (GABA) has been reported to be associated with stress; however, whether it affects stress-induced hair growth inhibition is unclear. This study aimed to investigate the potential roles and mechanisms of action of GABA in chronic restraint stress (CRS)-induced hair growth inhibition. We performed RNA-seq analysis and found that differentially expressed genes (DEGs) associated with neuroactive ligand-receptor interaction, including genes related to GABA receptors, significantly changed after mice were treated with CRS. Targeted metabolomics analysis and enzyme-linked immunosorbent assay (ELISA) also showed that GABA levels in back skin tissues and serum significantly elevated in the CRS group. Notably, CRS-induced hair growth inhibition got aggravated by GABA and alleviated through GABAA antagonists, such as picrotoxin and ginkgolide A. RNA sequencing analysis revealed that DEGs related to the cell cycle, DNA replication, purine metabolism, and pyrimidine metabolism pathways were significantly downregulated in dermal papilla (DP) cells after GABA treatment. Moreover, ginkgolide A, a GABAA antagonist extracted from the leaves of Ginkgo biloba, promoted the cell cycle of DP cells. Therefore, the present study demonstrated that the increase in GABA could promote CRS-induced hair growth inhibition by downregulating the cell cycle of DP cells and suggested that ginkgolide A may be a promising therapeutic drug for hair loss.
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Affiliation(s)
- Xuewen Wang
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yixin Su
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China; Liangzhu Laboratory, Zhejiang University Medical Center, China
| | - Zhenying Cai
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yaohan Xu
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xia Wu
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mus'ab Al Rudaisat
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chunting Hua
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Siji Chen
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lihua Lai
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou 310058, China; Liangzhu Laboratory, Zhejiang University Medical Center, China
| | - Hao Cheng
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Yinjing Song
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Qiang Zhou
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China; Hair Research Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Impact of stress on inhibitory neuronal circuits, our tribute to Bruce McEwen. Neurobiol Stress 2022; 19:100460. [PMID: 35734023 PMCID: PMC9207718 DOI: 10.1016/j.ynstr.2022.100460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/22/2022] [Accepted: 05/10/2022] [Indexed: 12/03/2022] Open
Abstract
This manuscript is dedicated to the memory of Bruce S. McEwen, to commemorate the impact he had on how we understand stress and neuronal plasticity, and the profound influence he exerted on our scientific careers. The focus of this review is the impact of stressors on inhibitory circuits, particularly those of the limbic system, but we also consider other regions affected by these adverse experiences. We revise the effects of acute and chronic stress during different stages of development and lifespan, taking into account the influence of the sex of the animals. We review first the influence of stress on the physiology of inhibitory neurons and on the expression of molecules related directly to GABAergic neurotransmission, and then focus on specific interneuron subpopulations, particularly on parvalbumin and somatostatin expressing cells. Then we analyze the effects of stress on molecules and structures related to the plasticity of inhibitory neurons: the polysialylated form of the neural cell adhesion molecule and perineuronal nets. Finally, we review the potential of antidepressants or environmental manipulations to revert the effects of stress on inhibitory circuits.
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Systemic LPS-induced microglial activation results in increased GABAergic tone: A mechanism of protection against neuroinflammation in the medial prefrontal cortex in mice. Brain Behav Immun 2022; 99:53-69. [PMID: 34582995 DOI: 10.1016/j.bbi.2021.09.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 02/01/2023] Open
Abstract
Neuroinflammation with excess microglial activation and synaptic dysfunction are early symptoms of most neurological diseases. However, how microglia-associated neuroinflammation regulates synaptic activity remains obscure. We report here that acute neuroinflammation induced by intraperitoneal injection of lipopolysaccharide (LPS) results in cell-type-specific increases in inhibitory postsynaptic currents in the glutamatergic, but not the GABAergic, neurons of medial prefrontal cortex (mPFC), coinciding with excessive microglial activation. LPS causes upregulation in levels of GABAAR subunits, glutamine synthetase and vesicular GABA transporter, and downregulation in brain-derived neurotrophic factor (BDNF) and its receptor, pTrkB. Blockage of microglial activation by minocycline ameliorates LPS-induced abnormal expression of GABA signaling-related proteins and activity of synaptic and network. Moreover, minocycline prevents the mice from LPS-induced aberrant behavior, such as a reduction in total distance and time spent in the centre in the open field test; decreases in entries into the open arm of elevated-plus maze and in consumption of sucrose; increased immobility in the tail suspension test. Furthermore, upregulation of GABA signaling by tiagabine also prevents LPS-induced microglial activation and aberrant behavior. This study illustrates a mode of bidirectional constitutive signaling between the neural and immune compartments of the brain, and suggests that the mPFC is an important area for brain-immune system communication. Moreover, the present study highlights GABAergic signaling as a key therapeutic target for mitigating neuroinflammation-induced abnormal synaptic activity in the mPFC, together with the associated behavioral abnormalities.
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Ho TC, Gifuni AJ, Gotlib IH. Psychobiological risk factors for suicidal thoughts and behaviors in adolescence: a consideration of the role of puberty. Mol Psychiatry 2022; 27:606-623. [PMID: 34117365 PMCID: PMC8960417 DOI: 10.1038/s41380-021-01171-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/03/2021] [Accepted: 05/11/2021] [Indexed: 02/05/2023]
Abstract
Suicide is the second leading cause of death among adolescents. While clinicians and researchers have begun to recognize the importance of considering multidimensional factors in understanding risk for suicidal thoughts and behaviors (STBs) during this developmental period, the role of puberty has been largely ignored. In this review, we contend that the hormonal events that occur during puberty have significant effects on the organization and development of brain systems implicated in the regulation of social stressors, including amygdala, hippocampus, striatum, medial prefrontal cortex, orbitofrontal cortex, and anterior cingulate cortex. Guided by previous experimental work in adults, we also propose that the influence of pubertal hormones and social stressors on neural systems related to risk for STBs is especially critical to consider in adolescents with a neurobiological sensitivity to hormonal changes. Furthermore, facets of the pubertal transition, such as pubertal timing, warrant deeper investigation and may help us gain a more comprehensive understanding of sex differences in the neurobiological and psychosocial mechanisms underlying adolescent STBs. Ultimately, advancing our understanding of the pubertal processes that contribute to suicide risk will improve early detection and facilitate the development of more effective, sex-specific, psychiatric interventions for adolescents.
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Affiliation(s)
- Tiffany C. Ho
- grid.168010.e0000000419368956Department of Psychology, Stanford University, Stanford, CA USA ,grid.266102.10000 0001 2297 6811Department of Psychiatry and Weill Institute for Neuroscience, University of California, San Francisco, San Francisco, CA USA
| | - Anthony J. Gifuni
- grid.168010.e0000000419368956Department of Psychology, Stanford University, Stanford, CA USA ,grid.14709.3b0000 0004 1936 8649Psychiatry Department and Douglas Mental Health University Institute, McGill University, Montréal, QC Canada
| | - Ian H. Gotlib
- grid.168010.e0000000419368956Department of Psychology, Stanford University, Stanford, CA USA
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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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Li ZL, Wang Y, Zou HW, Jing XY, Liu YJ, Li LF. GABA(B) receptors within the lateral habenula modulate stress resilience and vulnerability in mice. Physiol Behav 2021; 230:113311. [DOI: 10.1016/j.physbeh.2021.113311] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/29/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022]
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Reddy DS, Thompson W, Calderara G. Does Stress Trigger Seizures? Evidence from Experimental Models. Curr Top Behav Neurosci 2021; 55:41-64. [PMID: 33547597 DOI: 10.1007/7854_2020_191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This chapter describes the experimental evidence of stress modulation of epileptic seizures and the potential role of corticosteroids and neurosteroids in regulating stress-linked seizure vulnerability. Epilepsy is a chronic neurological disorder that is characterized by repeated seizures. There are many potential causes for epilepsy, including genetic predispositions, infections, brain injury, and neurotoxicity. Stress is a known precipitating factor for seizures in individuals suffering from epilepsy. Severe acute stress and persistent exposure to stress may increase susceptibility to seizures, thereby resulting in a higher frequency of seizures. This occurs through the stress-mediated release of cortisol, which has both excitatory and proconvulsant properties. Stress also causes the release of endogenous neurosteroids from central and adrenal sources. Neurosteroids such as allopregnanolone and THDOC, which are allosteric modulators of GABA-A receptors, are powerful anticonvulsants and neuroprotectants. Acute stress increases the release of neurosteroids, while chronic stress is associated with severe neurosteroid depletion and reduced inhibition in the brain. This diminished inhibition occurs largely as a result of neurosteroid deficiencies. Thus, exogenous administration of neurosteroids (neurosteroid replacement therapy) may offer neuroprotection in epilepsy. Synthetic neurosteroid could offer a rational approach to control neurosteroid-sensitive, stress-related epileptic seizures.
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Affiliation(s)
- Doodipala Samba Reddy
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA.
| | - Wesley Thompson
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
| | - Gianmarco Calderara
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
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Canzian J, Franscescon F, Müller TE, Stefanello FV, Souza TP, Rosa LV, Rosemberg DB. Stress increases susceptibility to pentylenetetrazole-induced seizures in adult zebrafish. Epilepsy Behav 2021; 114:107557. [PMID: 33243678 DOI: 10.1016/j.yebeh.2020.107557] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/08/2020] [Accepted: 09/28/2020] [Indexed: 12/16/2022]
Abstract
Stress is the body's reaction to any change that requires adaptive responses. In various organisms, stress is a seizure-related comorbidity. Despite the exposure to stressors eliciting aversive behaviors in zebrafish, there are no data showing whether stress potentiates epileptic seizures in this species. Here, we investigated whether a previous exposure to an intense acute stressor positively modulates the susceptibility to seizures in pentylenetetrazole (PTZ)-challenged zebrafish. The conspecific alarm substance (CAS) was used to elicit aversive responses (3.5 mL/L for 5 min), observed by increased bottom dwelling and erratic movements. Then, fish were immediately exposed to 7.5 mM PTZ for 10 min to induce seizure-like behaviors. Stress increased the seizure intensity, the number of clonic-like seizure behaviors (score 4), as well as facilitated the occurrence of score 4 episodes by decreasing the latency in which fish reached the score 4. Moreover, fish with heightened anxiety showed increased susceptibility to PTZ, since positive correlations between anxiety- and seizure-like behaviors were found. Overall, since CAS also increased whole-body cortisol levels in zebrafish, our novel findings show a prominent response to PTZ-induced seizures in previously stressed zebrafish. Moreover, we reinforce the growing utility of zebrafish models to assess seizure-related comorbidities aiming to elucidate how stress can affect epileptic seizures in vertebrates.
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Affiliation(s)
- Julia Canzian
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Francini Franscescon
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Talise E Müller
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Flavia V Stefanello
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Thiele P Souza
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Luiz V Rosa
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA 70458, USA.
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Ramos-Hryb AB, Ramirez MF, Lino-de-Oliveira C, Pagani MR. Stress-mediated hyperactivity and anhedonia resistant to diazepam and fluoxetine in drosophila. Stress 2021; 24:96-106. [PMID: 32319840 DOI: 10.1080/10253890.2020.1759547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Distresses may induce behavioral phenotypes constituting heuristic models for psychopharmacology studies. In several species, including Drosophila, antidepressants counteract stress-induced phenotypes allowing the use of these models to test new psychoactive drugs. Here, we developed a novel and time-efficient protocol to provoke stress-induced phenotypes in Drosophila for the study of psychopharmacological agents. In the first experiment, flies (n = 12/groups) were exposed to a random-sequence of different types of stresses during nearly 24 h (including social isolation, fasting, heat, and electric shock), a protocol named short-term variable stress (SVS). Second, flies were exposed to a single stressful stimulus (social isolation, fasting, heat shock or electric shock, n = 12/groups). Next, flies submitted to SVS protocol were treated with vehicle, diazepam or fluoxetine (n = 12/groups). At the end of the stress protocols, behavioral phenotypes were evaluated in the open field (OF) and sucrose preference tests. In comparison to the unstressed group, flies exposed to SVS exhibited hyperactivity, as well as shorter times exploring the boundaries of the OF. In contrast to fasting stress, SVS reduced sucrose preference in flies. By analyzing the effects of individual stimuli on fly behavior, fasting and electric shock appear to be the predominant influences on the SVS-induced behaviors. Although fluoxetine or diazepam reduced the initial locomotor activity of flies, no treatment prevented the sequelae of SVS. Altogether, this study provides a time-efficient model system for the study of stress-mediated hyperactivity and anhedonia-like state resistant to fluoxetine and diazepam. The applications of SVS in Drosophila to preclinical psychopharmacology require further studies. LAY SUMMARY Exposition to unpredictable stress plays a significant role in psychiatric disorder's onset. Behavioral traits of these disorders can be partially modeled in rodents aimed at developing psychopharmacological therapies. However, studies in rodents were questioned by ethical issues. Focused on 3Rs principles, we developed a preclinical model for stress and psychopharmacology research in Drosophila. Variable stress induced behavioral alterations, including hyperlocomotion and reduced preference for sucrose in flies. However, behavioral alterations were resistant to fluoxetine and diazepam.
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Affiliation(s)
- Ana Belén Ramos-Hryb
- Instituto de Fisiología y Biofísica (IFIBIO) Bernardo Houssay, Grupo de Neurociencia de Sistemas, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
- Postgraduation Program in Pharmacology, CCB, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mauro Federico Ramirez
- Instituto de Fisiología y Biofísica (IFIBIO) Bernardo Houssay, Grupo de Neurociencia de Sistemas, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Cilene Lino-de-Oliveira
- Postgraduation Program in Pharmacology, CCB, Federal University of Santa Catarina, Florianópolis, Brazil
- Department of Physiological Sciences, CCB, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mario Rafael Pagani
- Instituto de Fisiología y Biofísica (IFIBIO) Bernardo Houssay, Grupo de Neurociencia de Sistemas, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
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Albrecht A, Redavide E, Regev-Tsur S, Stork O, Richter-Levin G. Hippocampal GABAergic interneurons and their co-localized neuropeptides in stress vulnerability and resilience. Neurosci Biobehav Rev 2020; 122:229-244. [PMID: 33188820 DOI: 10.1016/j.neubiorev.2020.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/05/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022]
Abstract
Studies in humans and rodents suggest a critical role for the hippocampal formation in cognition and emotion, but also in the adaptation to stressful events. Successful stress adaptation promotes resilience, while its failure may lead to stress-induced psychopathologies such as depression and anxiety disorders. Hippocampal architecture and physiology is shaped by its strong control of activity via diverse classes of inhibitory interneurons that express typical calcium binding proteins and neuropeptides. Celltype-specific opto- and chemogenetic intervention strategies that take advantage of these biochemical markers have bolstered our understanding of the distinct role of different interneurons in anxiety, fear and stress adaptation. Moreover, some of the signature proteins of GABAergic interneurons have a potent impact on emotion and cognition on their own, making them attractive targets for interventions. In particular, neuropeptide Y is a promising endogenous agent for mediating resilience against severe stress. In this review, we evaluate the role of the major types of interneurons across hippocampal subregions in the adaptation to chronic and acute stress and to emotional memory formation.
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Affiliation(s)
- Anne Albrecht
- Institute of Anatomy, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany; Center for Behavioral Brain Science, Universitätsplatz 2, 39106 Magdeburg, Germany.
| | - Elisa Redavide
- Institute of Anatomy, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany; Center for Behavioral Brain Science, Universitätsplatz 2, 39106 Magdeburg, Germany; Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany; Institute of Pharmacology and Toxicology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany.
| | - Stav Regev-Tsur
- Sagol Department of Neurobiology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel.
| | - Oliver Stork
- Center for Behavioral Brain Science, Universitätsplatz 2, 39106 Magdeburg, Germany; Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany.
| | - Gal Richter-Levin
- Sagol Department of Neurobiology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; Psychology Department, University of Haifa199 Aba-Hushi Avenue, 3498838 Haifa, Israel.
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15
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GABA-enriched teas as neuro-nutraceuticals. Neurochem Int 2020; 141:104895. [PMID: 33144101 DOI: 10.1016/j.neuint.2020.104895] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 01/02/2023]
Abstract
Teas enriched in GABA are consumed for their beneficial effects on blood pressure, stress and anxiety. These effects may involve actions of GABA on the central and peripheral nervous systems. The anaerobic procedures for the production of GABA-enriched teas increase GABA levels by 10-20 times. They also significantly alter the levels of other constituents that may interact with the actions of GABA. These include epigallocatechin gallate, caffeine and theanine. The possible interactions of these active constituents make the understanding of the effects of GABA-enriched teas complex. More data is needed to establish where and how GABA is acting following consumption of GABA-enriched teas. While there is considerable evidence that such GABA is acting on GABA receptors in the periphery, there is rather less evidence that is acting directly in the brain. Certainly, there is more to the action of GABA-enriched teas than GABA itself.
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Schroyens N, Alfei JM, Schnell AE, Luyten L, Beckers T. Limited replicability of drug-induced amnesia after contextual fear memory retrieval in rats. Neurobiol Learn Mem 2019; 166:107105. [PMID: 31705982 DOI: 10.1016/j.nlm.2019.107105] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/23/2019] [Accepted: 11/04/2019] [Indexed: 10/25/2022]
Abstract
With the ultimate goal of investigating boundary conditions for post-reactivation amnesia, we set out to replicate studies in which systemic, post-reactivation administration of midazolam, propranolol, or cycloheximide resulted in amnesia for contextual fear memories. Our experiments involved conceptual as well as exact replications of previously published studies. In most of our experiments, we adopted a procedure that conformed to the standard 3-day protocol typically used in the literature, with contextual fear conditioning on day 1, unreinforced re-exposure to the conditioning context followed by systemic injection of the amnestic drug on day 2, and a memory retention test on day 3. Given the plethora of successful studies with large effects sizes and the absence of any failed replications in the literature, we were surprised to find that we were generally unable to replicate those findings. Our results suggest that post-reactivation amnesia by systemic drug administration in rats is more difficult to obtain than what would be expected based on published empirical reports. At present, it remains unclear which conditions determine the success of this procedure.
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Affiliation(s)
- Natalie Schroyens
- Centre for the Psychology of Learning and Experimental Psychopathology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium.
| | - Joaquín Matias Alfei
- Centre for the Psychology of Learning and Experimental Psychopathology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium.
| | - Anna Elisabeth Schnell
- Centre for the Psychology of Learning and Experimental Psychopathology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium; Laboratory of Biological Psychology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium(2).
| | - Laura Luyten
- Centre for the Psychology of Learning and Experimental Psychopathology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium.
| | - Tom Beckers
- Centre for the Psychology of Learning and Experimental Psychopathology, Department of Psychology, KU Leuven, Tiensestraat 102 bus 3712, 3000 Leuven, Belgium; Leuven Brain Institute, 3000 Leuven, Belgium.
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17
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Mundorf A, Knorr A, Mezö C, Klein C, Beyer DK, Fallgatter AJ, Schwarz M, Freund N. Lithium and glutamine synthetase: Protective effects following stress. Psychiatry Res 2019; 281:112544. [PMID: 31499341 DOI: 10.1016/j.psychres.2019.112544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 12/13/2022]
Abstract
Even though lithium is widely used as treatment for mood disorders, the exact mechanisms of lithium in the brain remain unknown. A potential mechanism affects the downstream target of the Wnt/β-catenin signaling pathway, specifically glutamine synthetase (GS). Here, we investigate the effect of lithium on GS-promoter activity in the brain. Over seven days, B6C3H-Glultm(T2A-LacZ) mice that carry LacZ as a reporter gene fused to the GS-promotor received either daily intraperitoneal injections of lithium carbonate (25 mg/kg) or NaCl, or no treatment. Following histochemical staining of β-galactosidase relative GS-promotor activity was measured by analyzing the intensity of the staining. Furthermore cell counts were conducted. GS-promotor activity was significantly decreased in female compared to male mice. Treatment group differences were only found in male hippocampi, with increased activity after NaCl treatment compared to both the lithium treatment and no treatment. Lithium treatment increased the overall number of cells in the CA1 region in males. Daily injections of NaCl might have been sufficient to induce stress-related GS-promotor activity changes in male mice; however, lithium was able to reverse the effect. Taken together, the current study indicates that lithium acts to prevent stress, rather affecting general GS-promoter activity.
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Affiliation(s)
- Annakarina Mundorf
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Bochum, 44780, Germany; Clinic for Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Alexandra Knorr
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Bochum, 44780, Germany
| | - Charlotte Mezö
- Clinic for Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Christina Klein
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Bochum, 44780, Germany
| | - Dominik Ke Beyer
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Bochum, 44780, Germany; Clinic for Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Andreas J Fallgatter
- Clinic for Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Michael Schwarz
- Institute of Pharmacology and Toxicology, University of Tuebingen, Tuebingen, Germany
| | - Nadja Freund
- Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Bochum, 44780, Germany; Clinic for Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
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Ardi Z, Richter-Levin A, Xu L, Cao X, Volkmer H, Stork O, Richter-Levin G. The role of the GABAA receptor Alpha 1 subunit in the ventral hippocampus in stress resilience. Sci Rep 2019; 9:13513. [PMID: 31534228 PMCID: PMC6751196 DOI: 10.1038/s41598-019-49824-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/22/2019] [Indexed: 01/10/2023] Open
Abstract
Pre-pubertal stress increases post-traumatic stress disorder (PTSD) susceptibility. We have previously demonstrated that enriched environment (EE) intervention immediately after pre-pubertal stress protects from the effects of trauma in adulthood. Here, we examined whether exposure to EE would also be beneficial if applied after exposure to trauma in adulthood. We have recently shown that exposure to juvenile stress and under-water trauma (UWT) is associated with increased expression of GABAA receptor subunit α1 in the ventral hippocampus. However, differentiating between affected and unaffected individuals, this increased expression was confined to stress-exposed, behaviorally unaffected individuals, suggesting upregulation of α1 expression as a potential mechanism of resilience. We now examined whether EE-induced resilience renders increased expression of α1 in the ventral hippocampus redundant when facing a trauma later in life. Adult rats were exposed to UWT, with pre-exposure to juvenile stress, and tested in the open field and elevated plus maze paradigms four weeks later. EE exposure during juvenility prevented pre-pubertal stress-induced vulnerability, but not if performed following UWT in adulthood. Furthermore, juvenile EE exposure prevented the trauma-associated increase in α1 expression levels. Our findings emphasize the importance of early interventions in order to reduce the likelihood of developing psychopathologies in adulthood.
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Affiliation(s)
- Z Ardi
- Sagol Department of Neuroscience, University of Haifa, Haifa, 3498838, Israel.,Department of Behavioral Sciences, Kinneret Academic College, Sea of Galilee, Tiberias, Israel.,Sagol Center for Brain and Mind, Baruch Ivcher School of Psychology, Interdisciplinary Center (IDC), Herzliya, Israel
| | - A Richter-Levin
- The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, 3498838, Israel
| | - L Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms, and Laboratory of Learning and Memory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming, 650223, China.,CAS Centre for Excellence in Brain Science and Intelligent Technology, Shanghai, 200031, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - X Cao
- Key Laboratory of Brain Functional Genomics, MOE&STCSM, East China Normal University, Shanghai, 200062, China
| | - H Volkmer
- Deptartment Molecular Biology, Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770, Reutlingen, Germany
| | - O Stork
- Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke University Magdeburg, Magdeburg, 39120, Germany
| | - G Richter-Levin
- Sagol Department of Neuroscience, University of Haifa, Haifa, 3498838, Israel. .,The Integrated Brain and Behavior Research Center (IBBR), University of Haifa, Haifa, 3498838, Israel. .,Department of Psychology, University of Haifa, Haifa, 3498838, Israel.
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19
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GABA A Receptors Are Well Preserved in the Hippocampus of Aged Mice. eNeuro 2019; 6:ENEURO.0496-18.2019. [PMID: 31340951 PMCID: PMC6709233 DOI: 10.1523/eneuro.0496-18.2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 07/02/2019] [Accepted: 07/15/2019] [Indexed: 01/04/2023] Open
Abstract
GABA is the primary inhibitory neurotransmitter in the nervous system. GABAA receptors (GABAARs) are pentameric ionotropic channels. Subunit composition of the receptors is associated with the affinity of GABA binding and its downstream inhibitory actions. Fluctuations in subunit expression levels with increasing age have been demonstrated in animal and human studies. However, our knowledge regarding the age-related hippocampal GABAAR expression changes is limited and based on rat studies. This study is the first analysis of the aging-related changes of the GABAAR subunit expression in the CA1, CA2/3, and dentate gyrus regions of the mouse hippocampus. Using Western blotting and immunohistochemistry we found that the GABAergic system is robust, with no significant age-related differences in GABAAR α1, α2, α3, α5, β3, and γ2 subunit expression level differences found between the young (6 months) and old (21 months) age groups in any of the hippocampal regions examined. However, we detected a localized decrease of α2 subunit expression around the soma, proximal dendrites, and in the axon initial segment of pyramidal cells in the CA1 and CA3 regions that is accompanied by a pronounced upregulation of the α2 subunit immunoreactivity in the neuropil of aged mice. In summary, GABAARs are well preserved in the mouse hippocampus during normal aging although GABAARs in the hippocampus are severely affected in age-related neurological disorders, including Alzheimer’s disease.
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Antonov SA, Novosadova EV, Kobylyansky AG, Illarioshkin SN, Tarantul VZ, Grivennikov IA. Expression and Functional Properties of NMDA and GABA A Receptors during Differentiation of Human Induced Pluripotent Stem Cells into Ventral Mesencephalic Neurons. BIOCHEMISTRY (MOSCOW) 2019; 84:310-320. [PMID: 31221069 DOI: 10.1134/s0006297919030131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ionotropic glutamate and GABA receptors regulate the differentiation and determine the functional properties of mature neurons. Both insufficient and excessive activity of these neurotransmission systems are associated with various nervous system diseases. Our knowledge regarding the expression profiles of these receptors and the mechanisms of their regulation during the differentiation of specialized human neuron subtypes is limited. Here the expression profiles of the NMDA and GABAA receptor subunits were explored during in vitro differentiation of human induced pluripotent stem cells (iPSCs) into ventral mesencephalic neurons. The correlation between the neuronal maturation and the expression dynamics of these genes was investigated, and the functional activity of these receptors was assessed by calcium imaging. The role of NMDA and GABAA receptors in neurite outgrowth and the development of spontaneous activity was analyzed using the viral transduction of neural progenitors with the reporter genes TagGFP and TagRFP. The data indicate that agonists of the investigated receptors can be employed for optimization of existing protocols for neural differentiation of iPSCs, in particular for acceleration of neuronal maturation.
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Affiliation(s)
- S A Antonov
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, 123182, Russia.
| | - E V Novosadova
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, 123182, Russia
| | - A G Kobylyansky
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, 123182, Russia
| | | | - V Z Tarantul
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, 123182, Russia
| | - I A Grivennikov
- Institute of Molecular Genetics, Russian Academy of Sciences, Moscow, 123182, Russia
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microRNA and mRNA profiles in the amygdala are associated with stress-induced depression and resilience in juvenile mice. Psychopharmacology (Berl) 2019; 236:2119-2142. [PMID: 30900007 DOI: 10.1007/s00213-019-05209-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 02/25/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Major depressive disorder characterized as recurrent negative mood is one of the prevalent psychiatric diseases. Chronic stress plus lack of reward may induce long-term imbalance between reward and penalty circuits in the brain, leading to persistent negative mood. Numerous individuals demonstrate resilience to chronic mild stress. Molecular mechanisms for major depression and resilience in the brain remain unclear. METHODS After juvenile mice were treated by the chronic unpredictable mild stress (CUMS) for 4 weeks, they were screened by sucrose preference, Y-maze and forced swimming tests to examine whether their behaviors were depression-like or not. mRNA and miRNA profiles were quantified by high-throughput sequencing in amygdala tissues harvested from control, CUMS-susceptible, and CUMS-resilience mice. RESULTS 1.5-fold ratio in reads per kilo-base per million reads was set to be the threshold to judge the involvement of mRNAs and miRNAs in the CUMS, major depression, or resilience. In the amygdala from CUMS-susceptible mice, the expression of genes relevant to GABAergic, cholinergic, glutamatergic, dopaminergic, and serotonergic synapses was changed, as well as the expression of genes that encoded signal pathways of PI3K-Akt, calcium, cAMP, MAPK, and drug addiction was imbalanced. The expression of these genes in the amygdala form CUMS-resilience mice was less changed. CONCLUSIONS The downregulation of genes relevant to synaptic functions and the imbalance of intra-signaling pathway in the amygdala are associated with major depression. Consistent results through sequencing mRNA and miRNA and using different methods validate our finding and conclusion.
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Antidepressant-like effect of fluoxetine may depend on translocator protein activity and pretest session duration in forced swimming test in mice. Behav Pharmacol 2019; 29:375-378. [PMID: 29076866 DOI: 10.1097/fbp.0000000000000359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The antidepressant-like effect of fluoxetine (20 mg/kg i.p.) has been assessed using the forced swimming test (FST) in IRC (CD-1) mice exposed or not to a pretest session of different duration (5 or 20 min). The influence of the mitochondrial translocator protein (TSPO) activity on the antidepressant-like effect of fluoxetine (20 mg/kg i.p.) in the FST was also studied. The antidepressant-like effect of fluoxetine was observed only in mice subjected to a 5-min pretest session 24 h before the FST. The TSPO antagonist PK11195 [1-(2-chlorophenyl)-N-methyl-N-(1-methylpropyl)-3-isoquinolinecarboxamide; 1 or 3 mg/kg i.p.] inhibited the antidepressant activity of fluoxetine in the FST. In the present study, fluoxetine or PK11195 was administered for a short duration. We suppose that the functional activity of TSPO may depend on a pretest session and that using this procedure is necessary to detect antidepressant activity of fluoxetine-like drugs.
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Gonda X, Petschner P, Eszlari N, Sutori S, Gal Z, Koncz S, Anderson IM, Deakin B, Juhasz G, Bagdy G. Effects of Different Stressors Are Modulated by Different Neurobiological Systems: The Role of GABA-A Versus CB1 Receptor Gene Variants in Anxiety and Depression. Front Cell Neurosci 2019; 13:138. [PMID: 31024264 PMCID: PMC6467241 DOI: 10.3389/fncel.2019.00138] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/20/2019] [Indexed: 12/14/2022] Open
Abstract
Environmental stress and its interaction with genetic variation are key contributors in the development of depression and anxiety, yet there is a failure to identify replicable genetic variants and gene-interaction effects in the background of these psychiatric symptoms. Recently it has been reported that 5-HTTLPR and NOSI interact with financial but not other types of recent stressors in the development of depression. In the present study we investigated the interaction of GABRA6 rs3219151 and CNR1 rs7766029 in interaction with different types of recent life events on the presence of depression and anxiety in a large general population sample. 2191 participants completed the List of Threatening Experiences questionnaire which covers four categories of stressful life events (financial problems, illness/personal problems, intimate relationships, and social network) experienced over the previous year and the Brief Symptom Inventory for depression and anxiety symptoms. Participants were genotyped for rs3219151 and rs7766029. Data were analyzed with linear regression models with age and gender as covariates. Results indicated that CNR1 rs7766029 interacted significantly with financial but not other types of life events both in case of depression and anxiety symptoms. In contrast, GABRA6 rs3219151 showed a significant interaction with social network related life events in case of anxiety and with illness/personal problem-related life events in case of depression. Our results suggest that the psychological impact of different types of recent stress may be differentially modulated by distinct molecular genetic pathways. Furthermore, in case of certain genetic variants, the occurring psychiatric symptom may depend on the type of stress experienced.
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Affiliation(s)
- Xenia Gonda
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary.,MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,NAP-2-SE New Antidepressant Target Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
| | - Peter Petschner
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Nora Eszlari
- NAP-2-SE New Antidepressant Target Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary.,Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Sara Sutori
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Zsofia Gal
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Szabolcs Koncz
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Ian M Anderson
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biological, Medical and Human Sciences, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, United Kingdom
| | - Bill Deakin
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biological, Medical and Human Sciences, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, United Kingdom.,Greater Manchester Mental Health NHS Foundation Trust, The University of Manchester, Manchester, United Kingdom
| | - Gabriella Juhasz
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary.,Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biological, Medical and Human Sciences, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, United Kingdom.,SE-NAP 2 Genetic Brain Imaging Migraine Research Group, Semmelweis University, Budapest, Hungary
| | - Gyorgy Bagdy
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.,NAP-2-SE New Antidepressant Target Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary.,Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
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24
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Sandgren AM, Brummer RJ. ADHD-originating in the gut? The emergence of a new explanatory model. Med Hypotheses 2018; 120:135-145. [DOI: 10.1016/j.mehy.2018.08.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 08/25/2018] [Indexed: 12/12/2022]
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25
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Szodorai E, Bampali K, Romanov RA, Kasper S, Hökfelt T, Ernst M, Lubec G, Harkany T. Diversity matters: combinatorial information coding by GABA A receptor subunits during spatial learning and its allosteric modulation. Cell Signal 2018; 50:142-159. [DOI: 10.1016/j.cellsig.2018.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/08/2018] [Accepted: 07/09/2018] [Indexed: 01/11/2023]
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26
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GABA regulates the proliferation and apoptosis of MAC-T cells through the LPS-induced TLR4 signaling pathway. Res Vet Sci 2018; 118:395-402. [DOI: 10.1016/j.rvsc.2018.04.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/09/2018] [Accepted: 04/13/2018] [Indexed: 02/02/2023]
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27
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Nejatbakhsh M, Saboory E, Bagheri M. Effect of prenatal stress on ɑ5 GABA A receptor subunit gene expression in hippocampus and pilocarpine induced seizure in rats. Int J Dev Neurosci 2018; 68:66-71. [PMID: 29758348 DOI: 10.1016/j.ijdevneu.2018.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/04/2018] [Accepted: 05/08/2018] [Indexed: 11/27/2022] Open
Abstract
The GABAergic synapses go through structural and functional maturation during early brain development. Maternal stress alters GABAergic synapses in developing brain, which are associated with the pathophysiology of neuropsychiatric disorders in adults. The present study aimed to investigate the effect of prenatal restraint stress (PS) on pilocarpine-induced seizure and ɑ5 subunit of γ-amino butyric acid type A (GABAA) receptor expression in hippocampus. Pregnant Wistar rats were subjected to PS at gestational days 15-17 and the pups were examined for susceptibility to seizure and ɑ5 subunit of GABAA receptor expression in hippocampus at postnatal days 14 and 21 (P14 and PND 21). Quantitative real-time PCR was used for evaluating the gene expression in the pups. Pilocarpine was injected intraperitoneally into the pups and seizure behaviors were recorded. The results showed that ɑ5 subunit mRNA expression significantly increased in hippocampus at both the P14 and P21 in the stressed rats. However, ɑ5 subunit level was greater at the P21 than at the P14 in both the groups. Latency of first tonic-clonic seizure significantly decreased in the PS group compared to the control pups. Number and duration of tonic-clonic seizures increased in the PS rats compared to the controls. PS led to an increase in total score of seizure at the P14 and P21. It can be concluded that PS increases the seizure susceptibility and GABAA receptor ɑ5 subunit gene expression in offspring; it is likely that the mechanism of increased seizure susceptibility by PS, at least in part, can increase the GABAA receptor ɑ5 subunit gene expression in hippocampus.
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Affiliation(s)
- Mehrdad Nejatbakhsh
- Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran; Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
| | - Ehsan Saboory
- Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran; Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
| | - Morteza Bagheri
- Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran.
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28
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Shojaee A, Taherianfard M. Effects of Gonadectomy and Avoidance Learning on the GABAAα1 Receptor Density in the Prefrontal Cortex of Male and Female Rats. NEUROPHYSIOLOGY+ 2018. [DOI: 10.1007/s11062-018-9693-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Skilbeck KJ, Johnston GA, Hinton T. Long-lasting effects of early-life intervention in mice on adulthood behaviour, GABA A receptor subunit expression and synaptic clustering. Pharmacol Res 2018; 128:179-189. [DOI: 10.1016/j.phrs.2017.09.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/21/2017] [Accepted: 09/28/2017] [Indexed: 02/06/2023]
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30
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Prescot A, Sheth C, Legarreta M, Renshaw PF, McGlade E, Yurgelun-Todd D. Altered Cortical GABA in Female Veterans with Suicidal Behavior: Sex Differences and Clinical Correlates. CHRONIC STRESS (THOUSAND OAKS, CALIF.) 2018; 2:2470547018768771. [PMID: 29756082 PMCID: PMC5947869 DOI: 10.1177/2470547018768771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 03/14/2018] [Indexed: 11/21/2022]
Abstract
Background Suicide is a public health concern in the civilian and veteran populations. Stressful life events are precipitating factors for suicide. The neurochemical underpinnings of the association between stress/trauma and suicide risk are unclear, especially in regards to sex differences. We hypothesized that gamma-amino butyric acid (GABA), the major inhibitory neurotransmitter may be a neurochemical candidate that is critical in the association between stress and suicide risk in veterans. Methods Proton magnetic resonance spectroscopy (1H MRS) at 3.0 Tesla was used to measure in vivo neurochemistry in the anterior cingulate cortex (ACC; predominantly the dorsal ACC) of 81 veterans (16 females), including 57 (11 females) who endorsed past suicidal ideation (SI) and/or suicide attempt (SA) and 24 (5 females) with no history of SI and/or SA. Suicidal behavior (SB) was defined as the presence of SI and/or SA. Results We observed no significant differences in GABA/ Creatine+phosphocreatine (Cr+PCr) between veterans with SB (SB+) and without SB (SB-). However, the female SB+ group showed significantly reduced GABA/Cr+PCr vs. the female SB- group. We observed a trend-level significant negative correlation between GABA/Cr+PCr and the defensive avoidance (DA) subscale on the Trauma Symptom Inventory (TSI) in the SB+ group. In contrast, the SB- group exhibited a positive relationship between the two variables. Furthermore, we found significant negative correlations between GABA/Cr+PCr and Hamilton Rating Scale for Depression (HAM-D) scores as well as between GABA/Cr+PCr and several subscales of the TSI in female veterans. Conclusions This study suggests that reduced GABA/Cr+ PCr ratio in the ACC, which may be related to altered inhibitory capacity, may underlie suicide risk in female veterans. Further, the negative association between GABA/Cr+PCr and stress symptomatology and depression scores suggests that MRS studies may shed light on intermediate phenotypes of SB.
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Affiliation(s)
- Andrew Prescot
- Department of Radiology, University of Utah School of
Medicine, Salt Lake City, UT, USA
| | - Chandni Sheth
- Department of Psychiatry, University of Utah School of
Medicine, Salt Lake City, UT, USA
- Diagnostic Neuroimaging, University of Utah, Salt Lake City, UT, USA
| | - Margaret Legarreta
- Diagnostic Neuroimaging, University of Utah, Salt Lake City, UT, USA
- George E. Wahlen Department of Veterans
Affairs Medical Center, VA VISN 19 Mental Illness Research, Education and Clinical
Center, Salt Lake City, UT, USA
| | - Perry F. Renshaw
- Department of Psychiatry, University of Utah School of
Medicine, Salt Lake City, UT, USA
- Diagnostic Neuroimaging, University of Utah, Salt Lake City, UT, USA
- George E. Wahlen Department of Veterans
Affairs Medical Center, VA VISN 19 Mental Illness Research, Education and Clinical
Center, Salt Lake City, UT, USA
| | - Erin McGlade
- Department of Psychiatry, University of Utah School of
Medicine, Salt Lake City, UT, USA
- Diagnostic Neuroimaging, University of Utah, Salt Lake City, UT, USA
- George E. Wahlen Department of Veterans
Affairs Medical Center, VA VISN 19 Mental Illness Research, Education and Clinical
Center, Salt Lake City, UT, USA
| | - Deborah Yurgelun-Todd
- Department of Psychiatry, University of Utah School of
Medicine, Salt Lake City, UT, USA
- Diagnostic Neuroimaging, University of Utah, Salt Lake City, UT, USA
- George E. Wahlen Department of Veterans
Affairs Medical Center, VA VISN 19 Mental Illness Research, Education and Clinical
Center, Salt Lake City, UT, USA
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31
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Gonda X, Sarginson J, Eszlari N, Petschner P, Toth ZG, Baksa D, Hullam G, Anderson IM, Deakin JFW, Juhasz G, Bagdy G. A new stress sensor and risk factor for suicide: the T allele of the functional genetic variant in the GABRA6 gene. Sci Rep 2017; 7:12887. [PMID: 29018204 PMCID: PMC5635130 DOI: 10.1038/s41598-017-12776-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 09/14/2017] [Indexed: 12/25/2022] Open
Abstract
Low GABA transmission has been reported in suicide, and GABRA6 rs3219151 T allele has been associated with greater physiological and endocrine stress response in previous studies. Although environmental stress also plays a role in suicide, the possible role of this allele has not been investigated in this respect. In our present study effect of rs3219151 of GABRA6 gene in interaction with recent negative life events on lifetime and current depression, current anxiety, as well as lifetime suicide were investigated using regression models in a white European general sample of 2283 subjects. Post hoc measures for phenotypes related to suicide risk were also tested for association with rs3219151 in interaction with environmental stress. No main effect of the GABRA6 rs3219151 was detected, but in those exposed to recent negative life events GABRA6 T allele increased current anxiety and depression as well as specific elements of suicide risk including suicidal and death-related thoughts, hopelessness, restlessness and agitation, insomnia and impulsiveness as measured by the STOP task. Our data indicate that stress-associated suicide risk is elevated in carriers of the GABRA6 rs3219151 T allele with several independent markers and predictors of suicidal behaviours converging to this increased risk.
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Affiliation(s)
- Xenia Gonda
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary.
- Department of Psychiatry and Psychotherapy, Kutvolgyi Clinical Centre, Semmelweis University, Budapest, Hungary.
- NAP-A-SE New Antidepressant Target Research Group, Semmelweis University, Budapest, Hungary.
| | - Jane Sarginson
- School of Health Sciences, University of Manchester, Manchester, United Kingdom
- School of Healthcare Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, M15GD, UK
| | - Nora Eszlari
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- NAP-A-SE New Antidepressant Target Research Group, Semmelweis University, Budapest, Hungary
| | - Peter Petschner
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- NAP-A-SE New Antidepressant Target Research Group, Semmelweis University, Budapest, Hungary
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Zoltan G Toth
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- Institute of Communication Engineering, Kando Kalman Faculty of Electrical Engineering, Obuda University, Budapest, Hungary
- MTA-SE-NAP B Genetic Brain Imaging Migraine Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
| | - Daniel Baksa
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- MTA-SE-NAP B Genetic Brain Imaging Migraine Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
| | - Gabor Hullam
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- Department of Measurement and Information Systems, Budapest University of Technology and Economics, Budapest, Hungary
| | - Ian M Anderson
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, University of Manchester and Manchester Academic Health Sciences Centre, Manchester, United Kingdom
| | - J F William Deakin
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, University of Manchester and Manchester Academic Health Sciences Centre, Manchester, United Kingdom
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Gabriella Juhasz
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- NAP-A-SE New Antidepressant Target Research Group, Semmelweis University, Budapest, Hungary
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
- MTA-SE-NAP B Genetic Brain Imaging Migraine Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, University of Manchester and Manchester Academic Health Sciences Centre, Manchester, United Kingdom
| | - Gyorgy Bagdy
- MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
- NAP-A-SE New Antidepressant Target Research Group, Semmelweis University, Budapest, Hungary
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
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Hu D, Yu ZL, Zhang Y, Han Y, Zhang W, Lu L, Shi J. Bumetanide treatment during early development rescues maternal separation-induced susceptibility to stress. Sci Rep 2017; 7:11878. [PMID: 28928398 PMCID: PMC5605528 DOI: 10.1038/s41598-017-12183-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/05/2017] [Indexed: 12/17/2022] Open
Abstract
Stress is a major risk factor for psychiatric disorders, such as depression, posttraumatic stress disorder, and schizophrenia. Early life stress, such as maternal separation, can have long-term effects on the development of the central nervous system and pathogenesis of psychiatric disorders. In the present study, we found that maternal separation increased the susceptibility to stress in adolescent rats, increased the expression of Na+/K+/2Cl- cotransporter 1 (NKCC1) on postnatal day 14, and increased the expression of K+/2Cl- cotransporter 2 (KCC2) and γ-aminobutyric acid A (GABAA) receptor subunits on postnatal day 40 in the hippocampus. NKCC1 inhibition by the U.S. Food and Drug Administration-approved drug bumetanide during the first two postnatal weeks rescued the depressive- and anxiety-like behavior that was induced by maternal separation and decreased the expression of NKCC1, KCC2 and GABAA receptor α1 and β2,3 subunits in the hippocampus. Bumetanide treatment during early development did not adversely affect body weight or normal behaviors in naive rats, or affect serum osmolality in adult rats. These results suggest that bumetanide treatment during early development may prevent the maternal separation-induced susceptibility to stress and impairments in GABAergic transmission in the hippocampus.
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Affiliation(s)
- Die Hu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Zhou-Long Yu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Yan Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Department of Pharmacology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Ying Han
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
| | - Wen Zhang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
| | - Lin Lu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
- Institute of Mental Health, National Clinical Research Center for Mental Disorders, Key Laboratory of Mental Health and Peking University Sixth Hospital, Peking University, Beijing, 100191, China
- Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Beijing, 100191, China
| | - Jie Shi
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China.
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing, 100191, China.
- Key Laboratory for Neuroscience of the Ministry of Education and Ministry of Public Healthy, Beijing, 100191, China.
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Lim SI, Song KH, Yoo CH, Woo DC, Choe BY. Decreased Glutamatergic Activity in the Frontal Cortex of Single Prolonged Stress Model: In vivo and Ex Vivo Proton MR Spectroscopy. Neurochem Res 2017; 42:2218-2229. [PMID: 28349360 DOI: 10.1007/s11064-017-2232-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 03/02/2017] [Accepted: 03/10/2017] [Indexed: 01/01/2023]
Abstract
Single prolonged stress (SPS) is one of the preclinical models of posttraumatic stress disorder (PTSD) in humans. Not every traumatized person develops PTSD and the onset of the disease varies from months to many years after exposure to life-threatening events. The pathogenetic neurometabolites in PTSD have not been investigated to date, and could provide a means for therapeutic interventions. Therefore the present study aimed to evaluate neurochemical changes in the frontal cortex in the SPS model during time-dependent sensitization using in vivo and ex vivo proton magnetic spectroscopy (1H-MRS). Twenty-one male Sprague-Dawley rats (200-220 g) were randomly assigned into two groups (Control, n = 10; SPS, n = 11). SPS consists of three consecutive stressors (restraint, forced swimming, and ether exposure) followed by 7 days without disturbance. In vivo 1H-MRS scans were conducted at baseline, immediately after SPS, and 3 and 7 days after SPS to quantify time-dependent alterations in the frontal cortex. On day 7, all animals were sacrificed and ex vivo 1H-MRS was performed. After SPS exposure, the SPS group showed signs of excitatory activities (glutamate) and cellular membrane turnover (choline and total choline) for 7 days. After the time-sensitization period, the SPS group showed lower glutamate and creatine levels and higher choline and lactate levels than the control group. These results indicate that SPS induces sustained adaptation of glutamatergic neuronal activity in the frontal cortex. Therefore, we conclude that SPS-induced stress reduces glutamatergic metabolism in the frontal cortex.
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Affiliation(s)
- Song-I Lim
- Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Kyu-Ho Song
- Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Chi-Hyeon Yoo
- Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Dong-Cheol Woo
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Bo-Young Choe
- Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. .,Research Institute of Biomedical Engineering, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Albrecht A, Müller I, Ardi Z, Çalışkan G, Gruber D, Ivens S, Segal M, Behr J, Heinemann U, Stork O, Richter-Levin G. Neurobiological consequences of juvenile stress: A GABAergic perspective on risk and resilience. Neurosci Biobehav Rev 2017; 74:21-43. [PMID: 28088535 DOI: 10.1016/j.neubiorev.2017.01.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/20/2016] [Accepted: 01/06/2017] [Indexed: 01/18/2023]
Abstract
ALBRECHT, A., MÜLLER, I., ARDI, Z., ÇALIŞKAN, G., GRUBER, D., IVENS, S., SEGAL, M., BEHR, J., HEINEMANN, U., STORK, O., and RICHTER-LEVIN, G. Neurobiological consequences of juvenile stress: A GABAergic perspective on risk and resilience. NEUROSCI BIOBEHAV REV XXX-XXX, 2016.- Childhood adversity is among the most potent risk factors for developing mood and anxiety disorders later in life. Therefore, understanding how stress during childhood shapes and rewires the brain may optimize preventive and therapeutic strategies for these disorders. To this end, animal models of stress exposure in rodents during their post-weaning and pre-pubertal life phase have been developed. Such 'juvenile stress' has a long-lasting impact on mood and anxiety-like behavior and on stress coping in adulthood, accompanied by alterations of the GABAergic system within core regions for the stress processing such as the amygdala, prefrontal cortex and hippocampus. While many regionally diverse molecular and electrophysiological changes are observed, not all of them correlate with juvenile stress-induced behavioral disturbances. It rather seems that certain juvenile stress-induced alterations reflect the system's attempts to maintain homeostasis and thus promote stress resilience. Analysis tools such as individual behavioral profiling may allow the association of behavioral and neurobiological alterations more clearly and the dissection of alterations related to the pathology from those related to resilience.
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Affiliation(s)
- Anne Albrecht
- Sagol Department of Neurobiology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany.
| | - Iris Müller
- Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany
| | - Ziv Ardi
- Sagol Department of Neurobiology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel
| | - Gürsel Çalışkan
- Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany; Neuroscience Research Center, Charité University Hospital Berlin, Hufelandweg 14, 10117 Berlin, Germany
| | - David Gruber
- Neuroscience Research Center, Charité University Hospital Berlin, Hufelandweg 14, 10117 Berlin, Germany
| | - Sebastian Ivens
- Neuroscience Research Center, Charité University Hospital Berlin, Hufelandweg 14, 10117 Berlin, Germany
| | - Menahem Segal
- Department of Neurobiology, The Weizmann Institute, Herzl St 234, 7610001 Rehovot, Israel
| | - Joachim Behr
- Research Department of Experimental and Molecular Psychiatry, Department of Psychiatry and Psychotherapy, Charité University Hospital Berlin, Garystraße 5, 14195 Berlin, Germany; Department of Psychiatry, Psychotherapy and Psychosomatic, Brandenburg Medical School - Campus Neuruppin, Fehrbelliner Straße 38, 16816 Neuruppin, Germany
| | - Uwe Heinemann
- Neuroscience Research Center, Charité University Hospital Berlin, Hufelandweg 14, 10117 Berlin, Germany
| | - Oliver Stork
- Department of Genetics & Molecular Neurobiology, Institute of Biology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany; Center for Behavioral Brain Sciences, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Gal Richter-Levin
- Sagol Department of Neurobiology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; The Institute for the Study of Affective Neuroscience (ISAN), 199 Aba-Hushi Avenue, 3498838 Haifa, Israel; Department of Psychology, University of Haifa, 199 Aba-Hushi Avenue, 3498838 Haifa, Israel
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Houtepen LC, Schür RR, Wijnen JP, Boer VO, Boks MPM, Kahn RS, Joëls M, Klomp DW, Vinkers CH. Acute stress effects on GABA and glutamate levels in the prefrontal cortex: A 7T 1H magnetic resonance spectroscopy study. NEUROIMAGE-CLINICAL 2017; 14:195-200. [PMID: 28180078 PMCID: PMC5280001 DOI: 10.1016/j.nicl.2017.01.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/23/2016] [Accepted: 01/02/2017] [Indexed: 12/17/2022]
Abstract
There is ample evidence that the inhibitory GABA and the excitatory glutamate system are essential for an adequate response to stress. Both GABAergic and glutamatergic brain circuits modulate hypothalamus-pituitary-adrenal (HPA)-axis activity, and stress in turn affects glutamate and GABA levels in the rodent brain. However, studies examining stress-induced GABA and glutamate levels in the human brain are scarce. Therefore, we investigated the influence of acute psychosocial stress (using the Trier Social Stress Test) on glutamate and GABA levels in the medial prefrontal cortex of 29 healthy male individuals using 7 Tesla proton magnetic resonance spectroscopy. In vivo GABA and glutamate levels were measured before and 30 min after exposure to either the stress or the control condition. We found no associations between psychosocial stress or cortisol stress reactivity and changes over time in medial prefrontal glutamate and GABA levels. GABA and glutamate levels over time were significantly correlated in the control condition but not in the stress condition, suggesting that very subtle differential effects of stress on GABA and glutamate across individuals may occur. However, overall, acute psychosocial stress does not appear to affect in vivo medial prefrontal GABA and glutamate levels, at least this is not detectable with current practice 1H-MRS. Psychosocial stress did not alter glutamate and GABA levels in the medial prefrontal cortex in healthy male individuals. Moreover, cortisol stress reactivity was not associated with medial prefrontal glutamate and GABA level change over time. Together, acute stress does not seem to affect in vivo medial prefrontal 7T MRI GABA and glutamate levels in humans.
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Affiliation(s)
- L C Houtepen
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - R R Schür
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - J P Wijnen
- Department of Radiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - V O Boer
- Department of Radiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - M P M Boks
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - R S Kahn
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - M Joëls
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - D W Klomp
- Department of Radiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - C H Vinkers
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
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New model of pharmacoresistant seizures induced by 3-mercaptopropionic acid in mice. Epilepsy Res 2017; 129:8-16. [DOI: 10.1016/j.eplepsyres.2016.10.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 10/07/2016] [Accepted: 10/24/2016] [Indexed: 01/16/2023]
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GABA Australis, some reflections on the history of GABA receptor research in Australia. Pharmacol Res 2016; 116:32-38. [PMID: 28017666 DOI: 10.1016/j.phrs.2016.12.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 12/10/2016] [Accepted: 12/21/2016] [Indexed: 12/12/2022]
Abstract
Research on GABA receptors has a long history in Australia dating from 1958 with David Curtis and his colleagues in Canberra. This review traces many of the advances made in Australia guided by highly cited publications and some obscure ones. It covers the discovery of key chemicals with which to investigate GABA receptor function including bicuculline, muscimol, phaclofen, THIP and (+)-CAMP. Also described are findings relevant to the involvement of mutant GABA receptors in inherited epilepsy. The modulation of GABA receptors by a bewildering range of chemicals, especially by flavonoids and terpenoids, is discussed.
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38
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Wang GY, Zhu ZM, Cui S, Wang JH. Glucocorticoid Induces Incoordination between Glutamatergic and GABAergic Neurons in the Amygdala. PLoS One 2016; 11:e0166535. [PMID: 27861545 PMCID: PMC5115758 DOI: 10.1371/journal.pone.0166535] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 10/31/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Stressful life leads to mood disorders. Chronic mild stress is presumably major etiology for depression, and acute severe stress leads to anxiety. These stressful situations may impair hypothalamus-pituitary-adrenal axis and in turn induce synapse dysfunction. However, it remains elusive how the stress hormones mess up subcellular compartments and interactions between excitatory and inhibitory neurons, which we have investigated in mouse amygdala, a structure related to emotional states. METHODS AND RESULTS Dexamethasone was chronically given by intraperitoneal injection once a day for one week or was acutely washed into the brain slices. The neuronal spikes and synaptic transmission were recorded by whole-cell patching in amygdala neurons of brain slices. The chronic or acute administration of dexamethasone downregulates glutamate release as well as upregulates GABA release and GABAergic neuron spiking. The chronic administration of dexamethasone also enhances the responsiveness of GABA receptors. CONCLUSION The upregulation of GABAergic neurons and the downregulation of glutamatergic neurons by glucocorticoid impair their balance in the amygdala, which leads to emotional disorders during stress.
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Affiliation(s)
- Guang-Yan Wang
- Qingdao University, School of Pharmacy, 38 Dengzhou, Shandong, China
| | - Zhao-Ming Zhu
- Qingdao University, School of Pharmacy, 38 Dengzhou, Shandong, China
| | - Shan Cui
- State Key Lab of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Jin-Hui Wang
- Qingdao University, School of Pharmacy, 38 Dengzhou, Shandong, China
- State Key Lab of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- * E-mail:
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Schür RR, Boks MP, Geuze E, Prinsen HC, Verhoeven-Duif NM, Joëls M, Kahn RS, Vermetten E, Vinkers CH. Development of psychopathology in deployed armed forces in relation to plasma GABA levels. Psychoneuroendocrinology 2016; 73:263-270. [PMID: 27566489 DOI: 10.1016/j.psyneuen.2016.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/13/2016] [Accepted: 08/15/2016] [Indexed: 12/11/2022]
Abstract
The GABA system is pivotal for an adequate response to a stressful environment but has remained largely unexplored in this context. The present study investigated the relationship of prospectively measured plasma GABA levels with psychopathology symptoms in military deployed to Afghanistan at risk for developing psychopathology following trauma exposure during deployment, including posttraumatic stress disorder (PTSD) and major depressive disorder (MDD). Plasma GABA levels were measured in military personnel (N=731) one month prior to deployment (T0), and one (T1) and six months (T2) after deployment using ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS). Mental health problems and depressive symptoms were measured with the Dutch revised Symptom Checklist (SCL-90) and PTSD symptoms with the Dutch Self-Rating Inventory for PTSD (SRIP). Six months after deployment increases in GABA concentrations were present in individuals who had developed mental health problems (T2: β=0.06, p=1.6×10-2, T1: β=4.7×10-2, p=0.13), depressive symptoms (T2: β=0.29, p=7.9×10-3, T1: β=0.23, p=0.072) and PTSD symptoms at T2 (T2: β=0.12, p=4.3×10-2, T1: β=0.11, p=0.13). Plasma GABA levels prior to and one month after deployment poorly predicted a high level of psychopathology symptoms either one or six months after deployment. The number of previous deployments, trauma experienced during deployment, childhood trauma, age and sex were not significantly associated with plasma GABA levels over time. Exclusion of subjects who either started or stopped smoking, alcohol or medication use between the three time points rendered the association of increasing GABA levels with the emergence of psychopathology symptoms more pronounced (mental health problems at T2: β=0.09, p=4.2×10-3; depressive symptoms at T2: β=0.35, p=3.5×10-3, PTSD symptoms at T2: β=0.17, p=1.7×10-2). To our knowledge, this is the first study to provide prospective evidence that the development of psychopathology after military deployment is associated with increasing plasma GABA levels. Our finding that plasma GABA rises after the emergence of psychopathology symptoms suggests that GABA increase may constitute a compensatory mechanism and warrants further exploration of the GABA system as a potential target for treatment.
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Affiliation(s)
- Remmelt R Schür
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
| | - Marco P Boks
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Elbert Geuze
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands; Research Center-Military Mental Healthcare, Ministry of Defence, Lundlaan 1, 3584 EZ Utrecht, The Netherlands
| | - Hubertus C Prinsen
- Department of Genetics, Section Metabolic Diagnostics, Wilhelmina Children's Hospital, University Medical Center Utrecht (UMCU), Lundlaan 6, 3584 EA Utrecht, The Netherlands
| | - Nanda M Verhoeven-Duif
- Department of Genetics, Section Metabolic Diagnostics, Wilhelmina Children's Hospital, University Medical Center Utrecht (UMCU), Lundlaan 6, 3584 EA Utrecht, The Netherlands
| | - Marian Joëls
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Universiteitsweg 100, 3584 CG Utrecht, The Netherlands
| | - René S Kahn
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Eric Vermetten
- Research Center-Military Mental Healthcare, Ministry of Defence, Lundlaan 1, 3584 EZ Utrecht, The Netherlands; Department of Psychiatry, Leiden University Medical Center, Albinusweg 2, 2333 ZA Leiden, The Netherlands
| | - Christiaan H Vinkers
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
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Smiley JF, Hackett TA, Bleiwas C, Petkova E, Stankov A, Mann JJ, Rosoklija G, Dwork AJ. Reduced GABA neuron density in auditory cerebral cortex of subjects with major depressive disorder. J Chem Neuroanat 2016; 76:108-121. [PMID: 26686292 PMCID: PMC4903945 DOI: 10.1016/j.jchemneu.2015.10.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 10/30/2015] [Indexed: 12/13/2022]
Abstract
Although major depressive disorder (MDD) and schizophrenia (SZ) are closely associated with disrupted functions in frontal and limbic areas of cerebral cortex, cellular pathology has also been found in other brain areas, including primary sensory cortex. Auditory cortex is of particular interest, given the prominence of auditory hallucinations in SZ, and sensory deficits in MDD. We used stereological sampling methods in auditory cortex to look for cellular differences between MDD, SZ and non-psychiatric subjects. Additionally, as all of our MDD subjects died of suicide, we evaluated the association of suicide with our measurements by selecting a SZ sample that was divided between suicide and non-suicide subjects. Measurements were done in primary auditory cortex (area A1) and auditory association cortex (area Tpt), two areas with distinct roles in sensory processing and obvious differences in neuron density and size. In MDD, densities of GABAergic interneurons immunolabeled for calretinin (CR) and calbindin (CB) were 23-29% lower than non-psychiatric controls in both areas. Parvalbumin (PV) interneurons (counted only in area Tpt) showed a nominally smaller (16%) reduction that was not statistically significant. Total neuron and glia densities measured in Nissl stained sections did not show corresponding reductions. Analysis of suicide in the SZ sample indicated that reduced CR cell density was associated with suicide, whereas the densities of CB and other cells were not. Our results are consistent with previous studies in MDD that found altered GABA-associated markers throughout the cerebral cortex including primary sensory areas.
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Affiliation(s)
- John F Smiley
- Program in Cognitive Neuroscience and Schizophrenia, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA; Department of Child and Adolescent Psychiatry, New York University Langone Medical Center, New York, NY, USA.
| | - Troy A Hackett
- Department of Psychology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Cynthia Bleiwas
- Program in Cognitive Neuroscience and Schizophrenia, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA
| | - Eva Petkova
- Program in Cognitive Neuroscience and Schizophrenia, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA; Department of Child and Adolescent Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | | | - J John Mann
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute and Columbia University, New York, NY, USA; Department of Neuroscience, New York State Psychiatric Institute, New York, NY, USA
| | - Gorazd Rosoklija
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute and Columbia University, New York, NY, USA; Department of Neuroscience, New York State Psychiatric Institute, New York, NY, USA; Macedonian Academy of Sciences and Arts, Skopje, Macedonia
| | - Andrew J Dwork
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute and Columbia University, New York, NY, USA; Department of Neuroscience, New York State Psychiatric Institute, New York, NY, USA; Macedonian Academy of Sciences and Arts, Skopje, Macedonia
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Impaired GABA synthesis, uptake and release are associated with depression-like behaviors induced by chronic mild stress. Transl Psychiatry 2016; 6:e910. [PMID: 27701406 PMCID: PMC5315548 DOI: 10.1038/tp.2016.181] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/20/2016] [Accepted: 07/31/2016] [Indexed: 12/20/2022] Open
Abstract
Major depression is a prevalent emotion disorder. Chronic stressful life in genetically susceptible individuals is presumably a major etiology that leads to neuron and synapse atrophy in the limbic system. Molecular mechanisms underlying the pathological changes remain elusive. Mice were treated by chronic unpredictable mild stress (CUMS) until they demonstrated depression-like behavior. GABA release in the medial prefrontal cortex was evaluated by cell electrophysiology and imaging. Molecular profiles related to GABA synthesis and uptake were investigated by the high-throughput sequencings of microRNAs and mRNAs as well as western blot analysis in this cortical area. In CUMS-induced depression mice, there appear the decreases in the innervation and function of GABAergic axons and in the levels of mRNAs and proteins of glutamate decarboxylase-67, vesicular GABA transporter and GABA transporter-3. miRNA-15b-5p, miRNA-144-3p, miRNA-582-5p and miRNA-879-5p that directly downregulate such mRNAs increase in this cortex. Our results suggest that chronic mild stress impairs GABA release and uptake by upregulating miRNAs and downregulating mRNAs and proteins, which may constitute the subcellular and molecular mechanisms for the lowered GABA tone in major depression.
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Di Ianni ME, Del Valle ME, Enrique AV, Rosella MA, Bruno F, Bruno-Blanch LE, Talevi A. Computer-Aided Identification of Anticonvulsant Effect of Natural Nonnutritive Sweeteners Stevioside and Rebaudioside A. Assay Drug Dev Technol 2016; 13:313-8. [PMID: 26258457 DOI: 10.1089/adt.2015.29010.meddrrr] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Steviol glycosides are natural constituents of Stevia rebaudiana (Bert.) Bert. (Asteraceae) that have recently gained worldwide approval as nonnutritive sweeteners by the Joint Food and Agriculture Organization/World Organization Expert Committee on Food Additives. Cheminformatic tools suggested that the aglycone steviol and several of its phase I metabolites were predicted as potential anticonvulsant agents effective in the seizure animal model maximal electroshock seizure (MES) test. Thus, aqueous infusion from S. rebaudiana was tested in the MES test (mice, intraperitoneal administration), confirming dose-dependent anticonvulsant effect. Afterward, isolated stevioside and rebaudioside A were tested in the MES test, with positive results. Though drug repositioning most often focuses on known therapeutics, this article illustrates the possibilities of this strategy to find new functionalities and therapeutic indications for food constituents and natural products.
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Affiliation(s)
- Mauricio E Di Ianni
- 1 Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - María E Del Valle
- 2 Natural Products, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - Andrea V Enrique
- 1 Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - María A Rosella
- 2 Natural Products, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - Fiorella Bruno
- 2 Natural Products, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - Luis E Bruno-Blanch
- 1 Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
| | - Alan Talevi
- 1 Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata , Buenos Aires, Argentina
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43
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Xu A, Cui S, Wang JH. Incoordination among Subcellular Compartments Is Associated with Depression-Like Behavior Induced by Chronic Mild Stress. Int J Neuropsychopharmacol 2016; 19:pyv122. [PMID: 26506857 PMCID: PMC4886664 DOI: 10.1093/ijnp/pyv122] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/16/2015] [Accepted: 10/23/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Major depressive disorder is characterized as persistent low mood. A chronically stressful life in genetically susceptible individuals is presumably the major etiology that leads to dysfunctions of monoamine and hypothalamus-pituitary-adrenal axis. These pathogenic factors cause neuron atrophy in the limbic system for major depressive disorder. Cell-specific pathophysiology is unclear, so we investigated prelimbic cortical GABAergic neurons and their interaction with glutamatergic neurons in depression-like mice. METHODS Mice were treated with chronic unpredictable mild stress for 3 weeks until they expressed depression-like behaviors confirmed by sucrose preference, Y-maze, and forced swimming tests. The structures and functions of GABAergic and glutamatergic units in prelimbic cortices were studied by cell imaging and electrophysiology in chronic unpredictable mild stress-induced depression mice vs controls. RESULTS In depression-like mice, prelimbic cortical GABAergic neurons show incoordination among the subcellular compartments, such as decreased excitability and synaptic outputs as well as increased reception from excitatory inputs. GABAergic synapses on glutamatergic cells demonstrate decreased presynaptic innervation and increased postsynaptic responsiveness. CONCLUSIONS Chronic unpredictable mild stress-induced incoordination in prelimbic cortical GABAergic and glutamatergic neurons dysregulates their target neurons, which may be the pathological basis for depressive mood. The rebalance of compatibility among subcellular compartments would be an ideal strategy to treat neural disorders.
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MESH Headings
- Animals
- Behavior, Animal
- Chronic Disease
- Depressive Disorder, Major/etiology
- Depressive Disorder, Major/metabolism
- Depressive Disorder, Major/physiopathology
- Depressive Disorder, Major/psychology
- Dietary Sucrose/administration & dosage
- Disease Models, Animal
- Excitatory Postsynaptic Potentials
- Food Preferences
- GABAergic Neurons/metabolism
- Glutamic Acid/metabolism
- In Vitro Techniques
- Inhibitory Postsynaptic Potentials
- Male
- Maze Learning
- Mice, Transgenic
- Motor Activity
- Neural Inhibition
- Neural Pathways/metabolism
- Neural Pathways/physiopathology
- Prefrontal Cortex/metabolism
- Prefrontal Cortex/physiopathology
- Stress, Psychological/complications
- Stress, Psychological/metabolism
- Stress, Psychological/physiopathology
- Stress, Psychological/psychology
- Swimming
- Time Factors
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Affiliation(s)
- Aiping Xu
- College of Life Science, University of Science and Technology of China, Hefei Anhui, China (Ms Xu and Dr Wang); State Key Lab of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (Ms Xu, Ms Cui, and Dr Wang); University of Chinese Academy of Sciences, Beijing, China (Dr Wang)
| | - Shan Cui
- College of Life Science, University of Science and Technology of China, Hefei Anhui, China (Ms Xu and Dr Wang); State Key Lab of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (Ms Xu, Ms Cui, and Dr Wang); University of Chinese Academy of Sciences, Beijing, China (Dr Wang)
| | - Jin-Hui Wang
- College of Life Science, University of Science and Technology of China, Hefei Anhui, China (Ms Xu and Dr Wang); State Key Lab of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (Ms Xu, Ms Cui, and Dr Wang); University of Chinese Academy of Sciences, Beijing, China (Dr Wang).
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GABAAα1-mediated plasticity in the orbitofrontal cortex regulates context-dependent action selection. Neuropsychopharmacology 2015; 40:1027-36. [PMID: 25348603 PMCID: PMC4330518 DOI: 10.1038/npp.2014.292] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 10/21/2014] [Accepted: 10/22/2014] [Indexed: 01/04/2023]
Abstract
An essential aspect of goal-directed action selection is differentiating between behaviors that are more, or less, likely to be reinforced. Habits, by contrast, are stimulus-elicited behaviors insensitive to action-outcome contingencies and are considered an etiological factor in several neuropsychiatric disorders. Thus, isolating the neuroanatomy and neurobiology of goal-directed action selection on the one hand, and habit formation on the other, is critical. Using in vivo viral-mediated gene silencing, we knocked down Gabra1 in the orbitofrontal prefrontal cortex (oPFC) in mice, decreasing oPFC GABAAα1 expression, as well as expression of the synaptic marker PSD-95. Mice expressing Green Fluorescent Protein or Gabra1 knockdown in the adjacent M2 motor cortex served as comparison groups. Using instrumental response training followed by action-outcome contingency degradation, we then found that oPFC GABAAα1 deficiency impaired animals' ability to differentiate between actions that were more or less likely to be reinforced, though sensitivity to outcome devaluation and extinction were intact. Meanwhile, M2 GABAAα1 deficiency enhanced sensitivity to action-outcome relationships. Behavioral abnormalities following oPFC GABAAα1 knockdown were rescued by testing mice in a distinct context relative to that in which they had been initially trained. Together, our findings corroborate evidence that chronic GABAAα1 deficiency remodels cortical synapses and suggest that neuroplasticity within the healthy oPFC gates the influence of reward-related contextual stimuli. These stimuli might otherwise promote maladaptive habit-based behavioral response strategies that contribute to-or exacerbate-neuropsychiatric illness.
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45
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Garcia-Oscos F, Peña D, Housini M, Cheng D, Lopez D, Cuevas-Olguin R, Saderi N, Salgado Delgado R, Galindo Charles L, Salgado Burgos H, Rose-John S, Flores G, Kilgard MP, Atzori M. Activation of the anti-inflammatory reflex blocks lipopolysaccharide-induced decrease in synaptic inhibition in the temporal cortex of the rat. J Neurosci Res 2015; 93:859-65. [DOI: 10.1002/jnr.23550] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/09/2014] [Accepted: 12/15/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Francisco Garcia-Oscos
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
- Department of Psychiatry; University of Texas Southwestern; Dallas Texas
| | - David Peña
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
| | - Mohammad Housini
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
| | - Derek Cheng
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
| | - Diego Lopez
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas
| | - Roberto Cuevas-Olguin
- Facultad de Ciencias; Universidad Autónoma de San Luis Potosí; San Luis Potosí México
| | - Nadia Saderi
- Facultad de Ciencias; Universidad Autónoma de San Luis Potosí; San Luis Potosí México
| | | | | | - Humberto Salgado Burgos
- Centro de Investigaciones Regionales Hideyo Noguchi, Universidad Autonoma de Yucatan; Mérida Yucatán México
| | - Stefan Rose-John
- Department of Biochemistry; Christian Albrecht University; Kiel Germany
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad de Puebla; Puebla México
| | - Michael P. Kilgard
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
| | - Marco Atzori
- School of Behavioral and Brain Sciences; University of Texas at Dallas; Richardson Texas
- Facultad de Ciencias; Universidad Autónoma de San Luis Potosí; San Luis Potosí México
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Bedse G, Romano A, Tempesta B, Lavecchia MA, Pace L, Bellomo A, Duranti A, Micioni Di Bonaventura MV, Cifani C, Cassano T, Gaetani S. Inhibition of anandamide hydrolysis enhances noradrenergic and GABAergic transmission in the prefrontal cortex and basolateral amygdala of rats subjected to acute swim stress. J Neurosci Res 2015; 93:777-87. [DOI: 10.1002/jnr.23539] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 11/13/2014] [Accepted: 11/15/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Gaurav Bedse
- Department of Physiology and Pharmacology; Sapienza University of Rome; Rome Italy
| | - Adele Romano
- Department of Physiology and Pharmacology; Sapienza University of Rome; Rome Italy
| | - Bianca Tempesta
- Department of Physiology and Pharmacology; Sapienza University of Rome; Rome Italy
| | - Michele A. Lavecchia
- Department of Physiology and Pharmacology; Sapienza University of Rome; Rome Italy
| | - Lorenzo Pace
- Department of Clinical and Experimental Medicine; University of Foggia; Foggia Italy
| | | | - Andrea Duranti
- Department of Biomolecular Sciences; University of Urbino Carlo Bo; Urbino Italy
| | | | - Carlo Cifani
- School of Pharmacy, Pharmacology Unit, University of Camerino; Camerino Italy
| | - Tommaso Cassano
- Department of Clinical and Experimental Medicine; University of Foggia; Foggia Italy
| | - Silvana Gaetani
- Department of Physiology and Pharmacology; Sapienza University of Rome; Rome Italy
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Maguire J. Stress-induced plasticity of GABAergic inhibition. Front Cell Neurosci 2014; 8:157. [PMID: 24936173 PMCID: PMC4047962 DOI: 10.3389/fncel.2014.00157] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 05/19/2014] [Indexed: 12/18/2022] Open
Abstract
GABAergic neurotransmission is highly plastic, undergoing dynamic alterations in response to changes in the environment, such as following both acute and chronic stress. Stress-induced plasticity of GABAergic inhibition is thought to contribute to changes in neuronal excitability associated with stress, which is particularly relevant for stress-related disorders and seizure susceptibility. Here we review the literature demonstrating several mechanisms altering GABAergic inhibition associated with stress, including brain region-specific alterations in GABAA receptor (GABAAR) subunit expression, changes in chloride homeostasis, and plasticity at GABAergic synapses. Alterations in the expression of specific GABAAR subunits have been documented in multiple brain regions associated with acute or chronic stress. In addition, recent work demonstrates stress-induced alterations in GABAergic inhibition resulting from plasticity in intracellular chloride levels. Acute and chronic stress-induced dephosphorylation and downregulation of the K+/Cl− co-transporter, KCC2, has been implicated in compromising GABAergic control of corticotropin-releasing hormone (CRH) neurons necessary for mounting the physiological response to stress. Acute stress also unmasks the capacity for both long-term potentiation and long-term depression, in distinct temporal windows, at GABAergic synapses on parvocellular neuroendocrine cells (PNCs) in the paraventricular nucleus (PVN) of the hypothalamus. This review highlights the complexity in the plasticity of GABAergic neurotransmission associated with stress and the relationship to neuronal excitability, including alterations in GABAAR expression, synaptic plasticity at GABAergic synapses, and changes in chloride homeostasis.
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Affiliation(s)
- Jamie Maguire
- Department of Neuroscience, Tufts University School of Medicine Boston, MA, USA
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Michopoulos V, Embree M, Reding K, Sanchez MM, Toufexis D, Votaw JR, Voll RJ, Goodman MM, Rivier J, Wilson ME, Berga SL. CRH receptor antagonism reverses the effect of social subordination upon central GABAA receptor binding in estradiol-treated ovariectomized female rhesus monkeys. Neuroscience 2013; 250:300-8. [PMID: 23856065 DOI: 10.1016/j.neuroscience.2013.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 06/28/2013] [Accepted: 07/01/2013] [Indexed: 01/22/2023]
Abstract
Persistent exposure to environmental stressors causes dysregulation of the limbic-hypothalamic-pituitary-adrenal (LHPA) axis and alters GABAA receptor (GABAAR) levels throughout the brain. Social subordination in socially housed female rhesus results in distinctive stress-related physiological and behavioral phenotypes that are dependent on the ovarian hormone estradiol (E2). In the present study, we utilized ovariectomized adult female rhesus monkeys undergoing hormone replacement with E2 to test the hypothesis that the chronic psychosocial stress of subordination alters GABAAR binding potential (GABAAR BPND) in limbic regions implicated in emotional processing including the prefrontal cortex, temporal lobe (amygdala and hippocampus), and hypothalamus. Furthermore, we tested the hypothesis that peripheral administration of a corticotropin-releasing hormone (CRH) receptor antagonist (astressin B) would reverse the alterations in GABAAR binding within these regions in subordinate females. After subjects received astressin B or saline for three consecutive days, GABAAR BPND was determined by positron emission tomography (PET) using (18)F-flumazenil as a radioligand. T1-weighted structural magnetic resonance imaging scans were also acquired for PET scan co-registration, in order to perform a region of interest analysis using the pons as a reference region. Compared to socially dominant females, subordinate females exhibited increased GABAAR BPND in the prefrontal cortex but not in the temporal lobe or the hypothalamus. Administration of astressin B eliminated the status difference in GABAAR BPND in the prefrontal cortex, suggesting that the chronic stressor of social subordination modulates GABAergic tone via effects on CRH and the LHPA axis, at least in prefrontal regions.
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Affiliation(s)
- V Michopoulos
- Department of Psychiatry & Behavioral Sciences, School of Medicine, Emory University, Atlanta, GA, United States; Division of Developmental & Cognitive Neuroscience, Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA.
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Increased neurosteroid sensitivity--an explanation to symptoms associated with chronic work related stress in women? Psychoneuroendocrinology 2013. [PMID: 23177572 DOI: 10.1016/j.psyneuen.2012.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Work related psychosocial stress can be accompanied by so called burnout syndrome with symptoms of mental exhaustion, physical fatigue, and cognitive dysfunction. Underlying mechanisms for acquiring burnout syndrome are not clear. Animal studies show that chronic stress is associated with altered release of GABA-A receptor modulating steroids (GAMS), altered composition of the GABA-A receptor and altered sensitivity to GAMS. In the present study we investigated if such changes occur in women with burnout syndrome. We further asked whether flumazenil (a benzodiazepine antagonist, but with positive modulating effects on GABA-A receptors with altered subunit composition) can block the effect of the GAMS allopregnanolone. Ten women with occupational psychosocial stress and burnout syndrome were compared with twelve healthy controls in an experimental setting. Saccadic eye velocity (SEV) was measured after an injection of allopregnanolone, followed by an injection of flumazenil and a second injection of allopregnanolone. The sensitivity to allopregnanolone was significantly higher in the patients compared to controls after the first injection (p=0.04) and the difference increased when the response per allopregnanolone concentration unit was compared (p=0.006). Following the flumazenil injection the burnout patients (p=0.016), but not controls, showed a decrease in SEV and flumazenil acted like a positive modulator that is agonistic. There was no significant difference between the groups after second allopregnanolone injection. In conclusion, patients with work related psychosocial stress and burnout syndrome show a different response to GABA-A receptor modulators than controls suggesting a changed GABA-A receptor function in these patients. More precisely we hypothesize that the α4 and delta subunits are up-regulated elevating the responsiveness to allopregnanolone and change the effect of flumazenil, which provides a potential explanation to the burnout syndrome. Flumazenil does not block the effect of allopregnanolone.
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Ali I, O'Brien P, Kumar G, Zheng T, Jones NC, Pinault D, French C, Morris MJ, Salzberg MR, O'Brien TJ. Enduring Effects of Early Life Stress on Firing Patterns of Hippocampal and Thalamocortical Neurons in Rats: Implications for Limbic Epilepsy. PLoS One 2013; 8:e66962. [PMID: 23825595 PMCID: PMC3688984 DOI: 10.1371/journal.pone.0066962] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Accepted: 05/13/2013] [Indexed: 12/03/2022] Open
Abstract
Early life stress results in an enduring vulnerability to kindling-induced epileptogenesis in rats, but the underlying mechanisms are not well understood. Recent studies indicate the involvement of thalamocortical neuronal circuits in the progression of kindling epileptogenesis. Therefore, we sought to determine in vivo the effects of early life stress and amygdala kindling on the firing pattern of hippocampus as well as thalamic and cortical neurons. Eight week old male Wistar rats, previously exposed to maternal separation (MS) early life stress or early handling (EH), underwent amygdala kindling (or sham kindling). Once fully kindled, in vivo juxtacellular recordings in hippocampal, thalamic and cortical regions were performed under neuroleptic analgesia. In the thalamic reticular nucleus cells both kindling and MS independently lowered firing frequency and enhanced burst firing. Further, burst firing in the thalamic reticular nucleus was significantly increased in kindled MS rats compared to kindled EH rats (p<0.05). In addition, MS enhanced burst firing of hippocampal pyramidal neurons. Following a stimulation-induced seizure, somatosensory cortical neurons exhibited a more pronounced increase in burst firing in MS rats than in EH rats. These data demonstrate changes in firing patterns in thalamocortical and hippocampal regions resulting from both MS and amygdala kindling, which may reflect cellular changes underlying the enhanced vulnerability to kindling in rats that have been exposed to early life stress.
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Affiliation(s)
- Idrish Ali
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Patrick O'Brien
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Gaurav Kumar
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Thomas Zheng
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Nigel C. Jones
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Didier Pinault
- INSERM U1114, Physiopathologie et psychopathologie de la schizophrénie, Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Chris French
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
| | - Margaret J. Morris
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, New South Wales, Australia
| | - Michael R. Salzberg
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
- Department of Psychiatry, St. Vincent's Hospital, University of Melbourne, Victoria, Australia
| | - Terence J. O'Brien
- Department of Medicine, the Royal Melbourne Hospital, University of Melbourne, Victoria, Australia
- Department of Neurology, the Royal Melbourne Hospital, Melbourne, Victoria, Australia
- * E-mail:
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