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Geng X, Wang X, Liu K, Xing Y, Xu J, Li Z, Zhang H, Hu M, Gao P, Chen D, Liu W, Li K, Wei S. ShuYu capsule alleviates emotional and physical symptoms of premenstrual dysphoric disorder: Impact on ALLO decline and GABA A receptor δ subunit in the PAG area. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155549. [PMID: 38810551 DOI: 10.1016/j.phymed.2024.155549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/05/2024] [Accepted: 03/18/2024] [Indexed: 05/31/2024]
Abstract
Premenstrual dysphoric disorder (PMDD) is a severe subtype of premenstrual syndrome in women of reproductive age, with its pathogenesis linked to the heightened sensitivity of type A γ -aminobutyric acid receptors (GABAAR) to neuroactive steroid hormone changes, particularly allopregnanolone (ALLO). While a low dose of fluoxetine, a classic selective serotonin reuptake inhibitor, is commonly used as a first-line drug to alleviate emotional disorders in PMDD in clinical settings, its mechanism of action is related to ALLO-GABAA receptor function. However, treating PMDD requires attention to both emotional and physical symptoms, such as pain sensitivity. This study aims to investigate the efficacy of ShuYu capsules, a traditional Chinese medicine, in simultaneously treating emotional and physical symptoms in a rat model of PMDD. Specifically, our focus centres on the midbrain periaqueductal grey (PAG), a region associated with emotion regulation and susceptibility to hyperalgesia. Considering the underlying mechanisms of ALLO-GABAA receptor function in the PAG region, we conducted a series of experiments to evaluate and define the effects of ShuYu capsules and uncover the relationship between the drug's efficacy and ALLO concentration fluctuations on GABAA receptor function in the PAG region. Our findings demonstrate that ShuYu capsules significantly improved oestrous cycle-dependant depression-like behaviour and reduced stress-induced hyperalgesia in rats with PMDD. Similar to the low dose of fluoxetine, ShuYu capsules targeted and mitigated the sharp decline in ALLO, rescued the upregulation of GABAAR subunit function, and activated PAG neurons in PMDD rats. The observed effects of ShuYu capsules suggest a central mechanism underlying PMDD symptoms, involving ALLO_GABAA receptor function in the PAG region. This study highlights the potential of traditional Chinese medicine in addressing both emotional and physical symptoms associated with PMDD, shedding light on novel therapeutic approaches for this condition.
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Affiliation(s)
- Xiwen Geng
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Xinyu Wang
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Kun Liu
- High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Ying Xing
- High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Jialing Xu
- High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Zifa Li
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Hao Zhang
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Minghui Hu
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Peng Gao
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Dan Chen
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China
| | - Wei Liu
- Department of Encephalopathy, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Ji'nan 250001, China.
| | - Kejian Li
- High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China.
| | - Sheng Wei
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; High Level Key Disciplines of Traditional Chinese Medicine, Basic Theory of Traditional Chinese Medicine, National Administration of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China; Shandong Provincial Engineering Research Center for the Prevention and Treatment of Major Brain Diseases with Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan 250355, China.
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Topchiy I, Mohbat J, Folorunso OO, Wang ZZ, Lazcano-Etchebarne C, Engin E. GABA system as the cause and effect in early development. Neurosci Biobehav Rev 2024; 161:105651. [PMID: 38579901 PMCID: PMC11081854 DOI: 10.1016/j.neubiorev.2024.105651] [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: 01/03/2024] [Revised: 03/05/2024] [Accepted: 04/01/2024] [Indexed: 04/07/2024]
Abstract
GABA is the primary inhibitory neurotransmitter in the adult brain and through its actions on GABAARs, it protects against excitotoxicity and seizure activity, ensures temporal fidelity of neurotransmission, and regulates concerted rhythmic activity of neuronal populations. In the developing brain, the development of GABAergic neurons precedes that of glutamatergic neurons and the GABA system serves as a guide and framework for the development of other brain systems. Despite this early start, the maturation of the GABA system also continues well into the early postnatal period. In this review, we organize evidence around two scenarios based on the essential and protracted nature of GABA system development: 1) disruptions in the development of the GABA system can lead to large scale disruptions in other developmental processes (i.e., GABA as the cause), 2) protracted maturation of this system makes it vulnerable to the effects of developmental insults (i.e., GABA as the effect). While ample evidence supports the importance of GABA/GABAAR system in both scenarios, large gaps in existing knowledge prevent strong mechanistic conclusions.
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Affiliation(s)
- Irina Topchiy
- Division of Basic Neuroscience, McLean Hospital, Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02215, USA
| | - Julie Mohbat
- Division of Basic Neuroscience, McLean Hospital, Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02215, USA; School of Life Sciences, Ecole Polytechnique Federale de Lausanne, Lausanne CH-1015, Switzerland
| | - Oluwarotimi O Folorunso
- Division of Basic Neuroscience, McLean Hospital, Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02215, USA
| | - Ziyi Zephyr Wang
- Division of Basic Neuroscience, McLean Hospital, Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02215, USA
| | | | - Elif Engin
- Division of Basic Neuroscience, McLean Hospital, Belmont, MA 02478, USA; Department of Psychiatry, Harvard Medical School, Boston, MA 02215, USA.
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Eng AG, Nirjar U, Elkins AR, Sizemore YJ, Monticello KN, Petersen MK, Miller SA, Barone J, Eisenlohr-Moul TA, Martel MM. Attention-deficit/hyperactivity disorder and the menstrual cycle: Theory and evidence. Horm Behav 2024; 158:105466. [PMID: 38039899 PMCID: PMC10872410 DOI: 10.1016/j.yhbeh.2023.105466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/14/2023] [Accepted: 11/24/2023] [Indexed: 12/03/2023]
Abstract
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that exhibits striking sex differences in symptoms, prevalence, and associated problems across development. Etiological factors and mechanisms underlying these sex differences remain one of the most understudied aspects of this disorder. The current paper seeks to provide a novel theoretical framework for understanding this phenomenon by reviewing evidence that females with ADHD may experience a "double whammy" of organizational and activational pubertal hormonal effects. We propose a novel theory of activational effects of cyclical circulating ovarian hormones on ADHD with increasing risk at times of rapid declines in estrogen. These declines may decrease executive function and trait control at two points of the cycle characterized by biphasic affective risk: (1) increases in approach/risk-taking behaviors at mid-cycle (periovulatory) and (2) increases in avoidance/negative affect perimenstrually. Low estrogen and control may then interact with increases in positive and negative affect, respectively, to increase hyperactivity-impulsivity symptoms post-ovulation and inattention symptoms perimenstrually. These interactions may be exacerbated by organizational pubertal effects on relatively overdeveloped limbic circuitry and adolescent-specific social pressures magnified in females with ADHD.
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Affiliation(s)
- Ashley G Eng
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America.
| | - Urveesha Nirjar
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Anjeli R Elkins
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Yancey J Sizemore
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Krystina N Monticello
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Madeline K Petersen
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Sarah A Miller
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
| | - Jordan Barone
- University of Illinois Chicago at Chicago College of Medicine, Department of Psychiatry, 912 S. Wood St, Chicago, IL 60612, United States of America
| | - Tory A Eisenlohr-Moul
- University of Illinois Chicago at Chicago College of Medicine, Department of Psychiatry, 912 S. Wood St, Chicago, IL 60612, United States of America
| | - Michelle M Martel
- University of Kentucky, Department of Psychology, 106-B Kastle Hall, Lexington, KY 40506-0044, United States of America
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Wei X, Campagna JJ, Jagodzinska B, Wi D, Cohn W, Lee J, Zhu C, Huang CS, Molnár L, Houser CR, John V, Mody I. A therapeutic small molecule lead enhances γ-oscillations and improves cognition/memory in Alzheimer's disease model mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.04.569994. [PMID: 38106006 PMCID: PMC10723366 DOI: 10.1101/2023.12.04.569994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Brain rhythms provide the timing and concurrence of brain activity required for linking together neuronal ensembles engaged in specific tasks. In particular, the γ-oscillations (30-120 Hz) orchestrate neuronal circuits underlying cognitive processes and working memory. These oscillations are reduced in numerous neurological and psychiatric disorders, including early cognitive decline in Alzheimer's disease (AD). Here we report on a potent brain permeable small molecule, DDL-920 that increases γ-oscillations and improves cognition/memory in a mouse model of AD, thus showing promise as a new class of therapeutics for AD. As a first in CNS pharmacotherapy, our lead candidate acts as a potent, efficacious, and selective negative allosteric modulator (NAM) of the γ-aminobutyric acid type A receptors (GABA A Rs) assembled from α1β2δ subunits. We identified these receptors through anatomical and pharmacological means to mediate the tonic inhibition of parvalbumin (PV) expressing interneurons (PV+INs) critically involved in the generation of γ-oscillations. Our approach is unique as it is meant to enhance cognitive performance and working memory in a state-dependent manner by engaging and amplifying the brain's endogenous γ-oscillations through enhancing the function of PV+INs.
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Zhang H, Qiao M, Gao D, Wang J, Sun C, Sun Y, Zhang Y, Liu H, Zhang Z, Gao M. Shuyu capsule alleviates premenstrual depression via allopregnanolone metabolic pathway targeting GABA (A) receptors δ subunit in the hippocampus. Asian J Psychiatr 2023; 90:103800. [PMID: 37898099 DOI: 10.1016/j.ajp.2023.103800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 10/16/2023] [Indexed: 10/30/2023]
Abstract
To reveal the exact changes of allopregnanolone-mediated γ-aminobutyric acid A receptor pathways and its specific therapeutic targets by Shuyu Capsule treating premenstrual depression, female Wistar rat models of premenstrual depression was established by Forced swimming test (FST). Behavioral tests, enzyme-linked immunosorbent assay (ELISA), interference knockdown adenovirus, and overexpressed vector adenovirus of GABAARδ, RT-qPCR, Western-Blot, and immunohistochemical detecting expressions were applied to identify the therapeutic targets. FST-based rat model indicated that Shuyu capsules alleviated typical premenstrual depression and may regulate alternations of 5α-reductase and 3α-steroid dehydrogenase, enhancing the metabolic pathway of progesterone to allopregnanolone, as well as targeting the GABAARδ subunit, thereby alleviating premenstrual depression of PMDD rat models.
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Affiliation(s)
- Hao Zhang
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Mingqi Qiao
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Dongmei Gao
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Jieqiong Wang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Chunyan Sun
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Ya Sun
- Innovative Institute of Chinese Medicine and Pharmacy , Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Yang Zhang
- Innovative Institute of Chinese Medicine and Pharmacy , Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Huayuan Liu
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Zhen Zhang
- Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Mingzhou Gao
- Innovative Institute of Chinese Medicine and Pharmacy , Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China.
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Martinez CI, Liktor-Busa E, Largent-Milnes TM. Molecular mechanisms of hormones implicated in migraine and the translational implication for transgender patients. FRONTIERS IN PAIN RESEARCH 2023; 4:1117842. [PMID: 37795389 PMCID: PMC10546064 DOI: 10.3389/fpain.2023.1117842] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 09/05/2023] [Indexed: 10/06/2023] Open
Abstract
Migraine is a primary headache disorder recognized by the World Health Organization as one of the most poorly understood and debilitating neurological conditions impacting global disability. Chronic pain disorders are more frequently diagnosed among cisgender women than men, suggesting that female sex hormones could be responsible for mediating chronic pain, including migraine and/or that androgens can be protective. This review discusses the major gonadal hormones, estrogens, progesterone, and testosterone in the context of molecular mechanisms by which they play a role in migraine pathophysiology. In addition, the literature to date describing roles of minor sex hormones including prolactin, luteinizing hormone, follicular stimulating hormone, and gonadotropin releasing hormone in migraine are presented. Because transgender and gender non-conforming (trans*) individuals are an underserved patient population in which gender-affirming sex hormone replacement therapy (HRT) is often medically necessary to align biological sex with gender identity, results from cisgender patient populations are discussed in the context of these major and minor sex hormones on migraine incidence and management in trans* patients.
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Affiliation(s)
| | | | - Tally M. Largent-Milnes
- Department of Pharmacology, College of Medicine, University of Arizona, Tucson, AZ, United States
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Molnár L, Ferando I, Liu B, Mokhtar P, Domokos J, Mody I. Capturing the power of seizures: an empirical mode decomposition analysis of epileptic activity in the mouse hippocampus. Front Mol Neurosci 2023; 16:1121479. [PMID: 37256078 PMCID: PMC10225690 DOI: 10.3389/fnmol.2023.1121479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 04/28/2023] [Indexed: 06/01/2023] Open
Abstract
Introduction Various methods have been used to determine the frequency components of seizures in scalp electroencephalography (EEG) and in intracortical recordings. Most of these methods rely on subjective or trial-and-error criteria for choosing the appropriate bandwidth for filtering the EEG or local field potential (LFP) signals to establish the frequency components that contribute most to the initiation and maintenance of seizure activity. The empirical mode decomposition (EMD) with the Hilbert-Huang transform is an unbiased method to decompose a time and frequency variant signal into its component non-stationary frequencies. The resulting components, i.e., the intrinsic mode functions (IMFs) objectively reflect the various non-stationary frequencies making up the original signal. Materials and methods We employed the EMD method to analyze the frequency components and relative power of spontaneous electrographic seizures recorded in the dentate gyri of mice during the epileptogenic period. Epilepsy was induced in mice following status epilepticus induced by suprahippocampal injection of kainic acid. The seizures were recorded as local field potentials (LFP) with electrodes implanted in the dentate gyrus. We analyzed recording segments that included a seizure (mean duration 28 s) and an equivalent time period both before and after the seizure. Each segment was divided into non-overlapping 1 s long epochs which were then analyzed to obtain their IMFs (usually 8-10), the center frequencies of the respective IMF and their spectral root-mean-squared (RMS) power. Results Our analysis yielded unbiased identification of the spectral components of seizures, and the relative power of these components during this pathological brain activity. During seizures, the power of the mid frequency components increased while the center frequency of the first IMF (with the highest frequency) dramatically decreased, providing mechanistic insights into how local seizures are generated. Discussion We expect this type of analysis to provide further insights into the mechanisms of seizure generation and potentially better seizure detection.
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Affiliation(s)
- László Molnár
- Department of Electrical Engineering, Sapientia Hungarian University of Transylvania, Târgu-Mures, Romania
| | - Isabella Ferando
- Department of Neurology, The David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Neurology, School of Medicine at University of Florida, Miami, FL, United States
| | - Benjamin Liu
- Department of Neurology, The David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Parsa Mokhtar
- Department of Neurology, The David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - József Domokos
- Department of Electrical Engineering, Sapientia Hungarian University of Transylvania, Târgu-Mures, Romania
| | - Istvan Mody
- Department of Neurology, The David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
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Pan HQ, Liu XX, He Y, Zhou J, Liao CZ, You WJ, Jiang SY, Qin X, Chen WB, Fei EK, Zhang WH, Pan BX. Prefrontal GABA A(δ)R Promotes Fear Extinction through Enabling the Plastic Regulation of Neuronal Intrinsic Excitability. J Neurosci 2022; 42:5755-5770. [PMID: 35705488 PMCID: PMC9302468 DOI: 10.1523/jneurosci.0689-22.2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 01/22/2023] Open
Abstract
Extinguishing the previously acquired fear is critical for the adaptation of an organism to the ever-changing environment, a process requiring the engagement of GABAA receptors (GABAARs). GABAARs consist of tens of structurally, pharmacologically, and functionally heterogeneous subtypes. However, the specific roles of these subtypes in fear extinction remain largely unexplored. Here, we observed that in the medial prefrontal cortex (mPFC), a core region for mood regulation, the extrasynaptically situated, δ-subunit-containing GABAARs [GABAA(δ)Rs], had a permissive role in tuning fear extinction in male mice, an effect sharply contrasting to the established but suppressive role by the whole GABAAR family. First, the fear extinction in individual mice was positively correlated with the level of GABAA(δ)R expression and function in their mPFC. Second, knockdown of GABAA(δ)R in mPFC, specifically in its infralimbic (IL) subregion, sufficed to impair the fear extinction in mice. Third, GABAA(δ)R-deficient mice also showed fear extinction deficits, and re-expressing GABAA(δ)Rs in the IL of these mice rescued the impaired extinction. Further mechanistic studies demonstrated that the permissive effect of GABAA(δ)R was associated with its role in enabling the extinction-evoked plastic regulation of neuronal excitability in IL projection neurons. By contrast, GABAA(δ)R had little influence on the extinction-evoked plasticity of glutamatergic transmission in these cells. Altogether, our findings revealed an unconventional and permissive role of extrasynaptic GABAA receptors in fear extinction through a route relying on nonsynaptic plasticity.SIGNIFICANCE STATEMENT The medial prefrontal cortex (mPFC) is one of the kernel brain regions engaged in fear extinction. Previous studies have repetitively shown that the GABAA receptor (GABAAR) family in this region act to suppress fear extinction. However, the roles of specific GABAAR subtypes in mPFC are largely unknown. We observed that the GABAAR-containing δ-subunit [GABAA(δ)R], a subtype of GABAARs exclusively situated in the extrasynaptic membrane and mediating the tonic neuronal inhibition, works oppositely to the whole GABAAR family and promotes (but does not suppress) fear extinction. More interestingly, in striking contrast to the synaptic GABAARs that suppress fear extinction by breaking the extinction-evoked plasticity of glutamatergic transmission, the GABAA(δ)R promotes fear extinction through enabling the plastic regulation of neuronal excitability in the infralimbic subregion of mPFC. Our findings thus reveal an unconventional role of GABAA(δ)R in promoting fear extinction through a route relying on nonsynaptic plasticity.
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Affiliation(s)
- Han-Qing Pan
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Xiao-Xuan Liu
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Neurology Department, The Second Xiangya Hospital, Central South University, Changsha 410011, People's Republic of China
| | - Ye He
- Center for Medical Experiments, Nanchang University, Nanchang 330031, People's Republic of China
| | - Jin Zhou
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Cai-Zhi Liao
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Wen-Jie You
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Si-Ying Jiang
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Xia Qin
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
- Jiangsu Provincial Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, People's Republic of China
| | - Wen-Bing Chen
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Er-Kang Fei
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Wen-Hua Zhang
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
| | - Bing-Xing Pan
- Laboratory of Fear and Anxiety Disorders, Institutes of Life Science, Nanchang University, Nanchang 330031, People's Republic of China
- Department of Biological Science, School of Life Sciences, Nanchang University, Nanchang 330031, People's Republic of China
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Hernández-Vivanco A, Cano-Adamuz N, Sánchez-Aguilera A, González-Alonso A, Rodríguez-Fernández A, Azcoitia Í, de la Prida LM, Méndez P. Sex-specific regulation of inhibition and network activity by local aromatase in the mouse hippocampus. Nat Commun 2022; 13:3913. [PMID: 35798748 PMCID: PMC9262915 DOI: 10.1038/s41467-022-31635-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 06/27/2022] [Indexed: 11/15/2022] Open
Abstract
Cognitive function relies on a balanced interplay between excitatory and inhibitory neurons (INs), but the impact of estradiol on IN function is not fully understood. Here, we characterize the regulation of hippocampal INs by aromatase, the enzyme responsible for estradiol synthesis, using a combination of molecular, genetic, functional and behavioral tools. The results show that CA1 parvalbumin-expressing INs (PV-INs) contribute to brain estradiol synthesis. Brain aromatase regulates synaptic inhibition through a mechanism that involves modification of perineuronal nets enwrapping PV-INs. In the female brain, aromatase modulates PV-INs activity, the dynamics of network oscillations and hippocampal-dependent memory. Aromatase regulation of PV-INs and inhibitory synapses is determined by the gonads and independent of sex chromosomes. These results suggest PV-INs are mediators of estrogenic regulation of behaviorally-relevant activity. Using a combination of molecular, genetic, functional and behavioural tools, this study describes the impact of brain synthesized estrogen in inhibitory neuronal function, network oscillations and hippocampal dependent memory.
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Affiliation(s)
| | | | - Alberto Sánchez-Aguilera
- Instituto Cajal (CSIC), Av Dr. Arce 37, 28002, Madrid, Spain.,Department of Physiology, Faculty of Medicine, Universidad Complutense de Madrid IdISSC, Avda Complutense s/n, 28040, Madrid, Spain
| | | | | | - Íñigo Azcoitia
- Department of Cell Biology, Universidad Complutense de Madrid, C José Antonio Nováis 12, 28040, Madrid, Spain.,Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Pablo Méndez
- Instituto Cajal (CSIC), Av Dr. Arce 37, 28002, Madrid, Spain.
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10
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Vrontou S, Bédécarrats A, Wei X, Ayodeji M, Brassai A, Molnár L, Mody I. Altered brain rhythms and behaviour in the accelerated ovarian failure mouse model of human menopause. Brain Commun 2022; 4:fcac166. [PMID: 35794872 PMCID: PMC9253886 DOI: 10.1093/braincomms/fcac166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/30/2022] [Accepted: 06/20/2022] [Indexed: 11/14/2022] Open
Abstract
To date, potential mechanisms of menopause-related memory and cognitive deficits have not been elucidated. Therefore, we studied brain oscillations, their phase–amplitude coupling, sleep and vigilance state patterns, running wheel use and other behavioural measures in a translationally valid mouse model of menopause, the 4-vinylcyclohexene-diepoxide-induced accelerated ovarian failure. After accelerated ovarian failure, female mice show significant alterations in brain rhythms, including changes in the frequencies of θ (5–12 Hz) and γ (30–120 Hz) oscillations, a reversed phase–amplitude coupling, altered coupling of hippocampal sharp-wave ripples to medial prefrontal cortical sleep spindles and reduced δ oscillation (0.5–4 Hz) synchrony between the two regions during non-rapid eye movement sleep. In addition, we report on significant circadian variations in the frequencies of θ and γ oscillations, and massive synchronous δ oscillations during wheel running. Our results reveal novel and specific network alterations and feasible signs for diminished brain connectivity in the accelerated ovarian failure mouse model of menopause. Taken together, our results may have identified changes possibly responsible for some of the memory and cognitive deficits previously described in this model. Corresponding future studies in menopausal women could shed light on fundamental mechanisms underlying the neurological and psychiatric comorbidities present during this important transitional phase in women’s lives.
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Affiliation(s)
- Sophia Vrontou
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | - Alexis Bédécarrats
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | - Xiaofei Wei
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
| | | | - Attila Brassai
- Department of Pharmacology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology , Târgu Mureş 540139 , Romania
| | - László Molnár
- Department of Electrical Engineering, Sapientia Hungarian University of Transylvania , Târgu Mureş 540485 , Romania
| | - Istvan Mody
- Department of Neurology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
- Department of Physiology, The David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
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11
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Gilfarb RA, Leuner B. GABA System Modifications During Periods of Hormonal Flux Across the Female Lifespan. Front Behav Neurosci 2022; 16:802530. [PMID: 35783228 PMCID: PMC9245048 DOI: 10.3389/fnbeh.2022.802530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/21/2022] [Indexed: 01/10/2023] Open
Abstract
The female lifespan is marked by periods of dramatic hormonal fluctuation. Changes in the ovarian hormones estradiol and progesterone, in addition to the progesterone metabolite allopregnanolone, are among the most significant and have been shown to have widespread effects on the brain. This review summarizes current understanding of alterations that occur within the GABA system during the major hormonal transition periods of puberty, the ovarian cycle, pregnancy and the postpartum period, as well as reproductive aging. The functional impacts of altered inhibitory activity during these times are also discussed. Lastly, avenues for future research are identified, which, if pursued, can broaden understanding of the GABA system in the female brain and potentially lead to better treatments for women experiencing changes in brain function at each of these hormonal transition periods.
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Affiliation(s)
- Rachel A. Gilfarb
- Neuroscience Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Benedetta Leuner
- Department of Psychology, The Ohio State University, Columbus, OH, United States
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States
- *Correspondence: Benedetta Leuner,
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12
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Michalettos G, Ruscher K. Crosstalk Between GABAergic Neurotransmission and Inflammatory Cascades in the Post-ischemic Brain: Relevance for Stroke Recovery. Front Cell Neurosci 2022; 16:807911. [PMID: 35401118 PMCID: PMC8983863 DOI: 10.3389/fncel.2022.807911] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/28/2022] [Indexed: 11/28/2022] Open
Abstract
Adaptive plasticity processes are required involving neurons as well as non-neuronal cells to recover lost brain functions after an ischemic stroke. Recent studies show that gamma-Aminobutyric acid (GABA) has profound effects on glial and immune cell functions in addition to its inhibitory actions on neuronal circuits in the post-ischemic brain. Here, we provide an overview of how GABAergic neurotransmission changes during the first weeks after stroke and how GABA affects functions of astroglial and microglial cells as well as peripheral immune cell populations accumulating in the ischemic territory and brain regions remote to the lesion. Moreover, we will summarize recent studies providing data on the immunomodulatory actions of GABA of relevance for stroke recovery. Interestingly, the activation of GABA receptors on immune cells exerts a downregulation of detrimental anti-inflammatory cascades. Conversely, we will discuss studies addressing how specific inflammatory cascades affect GABAergic neurotransmission on the level of GABA receptor composition, GABA synthesis, and release. In particular, the chemokines CXCR4 and CX3CR1 pathways have been demonstrated to modulate receptor composition and synthesis. Together, the actual view on the interactions between GABAergic neurotransmission and inflammatory cascades points towards a specific crosstalk in the post-ischemic brain. Similar to what has been shown in experimental models, specific therapeutic modulation of GABAergic neurotransmission and inflammatory pathways may synergistically promote neuronal plasticity to enhance stroke recovery.
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Affiliation(s)
- Georgios Michalettos
- Laboratory for Experimental Brain Research, Division of Neurosurgery, Department of Clinical Sciences, Wallenberg Neuroscience Center, Lund University, Lund, Sweden
| | - Karsten Ruscher
- Laboratory for Experimental Brain Research, Division of Neurosurgery, Department of Clinical Sciences, Wallenberg Neuroscience Center, Lund University, Lund, Sweden
- LUBIN Lab—Lunds Laboratorium för Neurokirurgisk Hjärnskadeforskning, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
- *Correspondence: Karsten Ruscher
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13
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Lambert PM, Lu X, Zorumski CF, Mennerick S. Physiological markers of rapid antidepressant effects of allopregnanolone. J Neuroendocrinol 2022; 34:e13023. [PMID: 34423498 PMCID: PMC8807818 DOI: 10.1111/jne.13023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 02/04/2023]
Abstract
The rise of ketamine and brexanolone as rapid antidepressant treatments raises the question of common mechanisms. Both drugs act without the long onset time of traditional antidepressants such as selective serotonin reuptake inhibitors. The drugs also share the interesting feature of benefit that persists beyond the initial drug lifetime. Here, we briefly review literature on functional changes that may mark the triggering mechanism of rapid antidepressant actions. Because ketamine has a longer history of study as a rapid antidepressant, we use this literature as a template to guide hypotheses about common action. Brexanolone has the complication of being a formulation of a naturally occurring neurosteroid; thus, endogenous levels need to be considered when studying the impact of exogenous administration. We conclude that network disinhibition and increased high-frequency oscillations are candidates to mediate acute triggering effects of rapid antidepressants.
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Affiliation(s)
- Peter M Lambert
- Department of Psychiatry, Washington University in St Louis School of Medicine, St Louis, MO, USA
| | - Xinguo Lu
- Department of Psychiatry, Washington University in St Louis School of Medicine, St Louis, MO, USA
| | - Charles F Zorumski
- Department of Psychiatry, Washington University in St Louis School of Medicine, St Louis, MO, USA
- Taylor Family Institute for Innovative Psychiatric Research, Washington University in St Louis School of Medicine, St Louis, MO, USA
| | - Steven Mennerick
- Department of Psychiatry, Washington University in St Louis School of Medicine, St Louis, MO, USA
- Taylor Family Institute for Innovative Psychiatric Research, Washington University in St Louis School of Medicine, St Louis, MO, USA
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14
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Yin W, Zhang J, Guo Y, Wu Z, Diao C, Sun J. Melatonin for premenstrual syndrome: A potential remedy but not ready. Front Endocrinol (Lausanne) 2022; 13:1084249. [PMID: 36699021 PMCID: PMC9868742 DOI: 10.3389/fendo.2022.1084249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/12/2022] [Indexed: 01/11/2023] Open
Abstract
Premenstrual syndrome (PMS), a recurrent and moderate disorder that occurs during the luteal phase of the menstrual cycle and quickly resolves after menstruation, is characterized by somatic and emotional discomfort that can be severe enough to impair daily activities. Current therapeutic drugs for PMS such as selective serotonin reuptake inhibitors are not very satisfying. As a critical pineal hormone, melatonin has increasingly been suggested to modulate PMS symptoms. In this review, we update the latest progress on PMS-induced sleep disturbance, mood changes, and cognitive impairment and provide possible pathways by which melatonin attenuates these symptoms. Moreover, we focus on the role of melatonin in PMS molecular mechanisms. Herein, we show that melatonin can regulate ovarian estrogen and progesterone, of which cyclic fluctuations contribute to PMS pathogenesis. Melatonin also modulates gamma-aminobutyric acid and the brain-derived neurotrophic factor system in PMS. Interpreting the role of melatonin in PMS is not only informative to clarify PMS etiology but also instructive to melatonin and its receptor agonist application to promote female health. As a safe interaction, melatonin treatment can be effective in alleviating symptoms of PMS. However, symptoms such as sleep disturbance, depressive mood, cognitive impairment are not specific and can be easily misdiagnosed. Connections between melatonin receptor, ovarian steroid dysfunction, and PMS are not consistent among past studies. Before final conclusions are drawn, more well-organized and rigorous studies are recommended.
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Affiliation(s)
- Wei Yin
- Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Neurobiology, Shandong University, Jinan, Shandong, China
| | - Jie Zhang
- Department of Neurosurgery, Laizhou City People’s Hospital, Laizhou, Shandong, China
| | - Yao Guo
- Department of Psychiatry, Shandong Provincial Mental Health Center, Jinan, Shandong, China
| | - Zhibing Wu
- Department of Anatomy, Changzhi Medical College, Changzhi, Shanxi, China
| | - Can Diao
- School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Jinhao Sun
- Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Neurobiology, Shandong University, Jinan, Shandong, China
- *Correspondence: Jinhao Sun,
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15
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Wei S, Geng X, Li Z, Xu K, Hu M, Wu H, Shi W, Qiao M. A forced swim-based rat model of premenstrual depression: effects of hormonal changes and drug intervention. Aging (Albany NY) 2020; 12:24357-24370. [PMID: 33229622 PMCID: PMC7762461 DOI: 10.18632/aging.202249] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/20/2020] [Indexed: 12/11/2022]
Abstract
Premenstrual dysphoric disorder (PMDD), a form of premenstrual syndrome (PMS), is a severe health disturbance that affects a patient’s emotions; it is caused by periodic psychological symptoms, and its pathogenesis remains unclear. As depression-like symptoms are found in a majority of clinical cases, a reliable animal model of premenstrual depression is indispensable to understand the pathogenesis. Herein, we describe a novel rat model of premenstrual depression, based on the forced swimming test, with a regular estrous cycle. The results showed that in the estrous cycle, the depression-like behavior of rats occurred in the non-receptive phase and disappeared in the receptive phase. Following ovariectomy, the depression-like symptoms disappeared and returned after a hormone priming regimen. Moreover, fluoxetine, an anti-depressant, could reverse the behavioral symptoms in these model rats with normal estrous cycle. Further, the model rats showed significant changes in the serum levels of estrogen and progesterone, hippocampal levels of allopregnanolone, 5-hydroxytryptamine, norepinephrine, and γ-aminobutyric acid (GABA), and in the expression of GABAA receptor 4α subunit, all of which were reversed to physiological levels by fluoxetine. Overall, we established a reliable and standardized rat model of premenstrual depression, which may facilitate the elucidation of PMS/PMDD pathogenesis and development of related therapies.
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Affiliation(s)
- Sheng Wei
- Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Ji’nan 250012, China.,Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China.,Experimental Center, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
| | - Xiwen Geng
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China.,Experimental Center, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
| | - Zifa Li
- Experimental Center, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
| | - Kaiyong Xu
- Experimental Center, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
| | - Minghui Hu
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China.,Experimental Center, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
| | - Hongyun Wu
- Department of Encephalopathy, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Ji’nan 250011, China
| | - Wei Shi
- Department of Gynecology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Ji’nan 250011, China
| | - Mingqi Qiao
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Ji’nan 250355, China
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16
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Gage M, Golden M, Putra M, Sharma S, Thippeswamy T. Sex as a biological variable in the rat model of diisopropylfluorophosphate-induced long-term neurotoxicity. Ann N Y Acad Sci 2020; 1479:44-64. [PMID: 32090337 DOI: 10.1111/nyas.14315] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/24/2020] [Accepted: 01/25/2020] [Indexed: 01/13/2023]
Abstract
Sex differences in response to neurotoxicant exposure that initiates epileptogenesis are understudied. We used telemetry-implanted male and female adult rats exposed to an organophosphate (OP) neurotoxicant, diisopropylflourophosphate (DFP), to test sex differences in the severity of status epilepticus (SE) and the development of spontaneous recurrent seizures (SRS). Females had significantly less severe SE and decreased epileptiform spikes compared with males, although females received a higher dose of DFP than males. The estrous stages had no impact on seizure susceptibility, but rats with severe SE had a significantly prolonged diestrus. A previously demonstrated disease-modifying agent, an inducible nitric oxide synthase inhibitor, 1400W, was tested in both sexes. None of the eight males treated with 1400W developed convulsive SRS during 4 weeks post-DFP exposure, while two of seven females developed convulsive SRS. Concerning gliosis and neurodegeneration, there were region-specific differences in the interaction between sex and SE severity. As SE severity influences epileptogenesis, and as females had significantly less severe SE, sex as a biological variable should be factored into the design of future OP nerve agent experiments while evaluating neurotoxicity and optimizing potential disease-modifying agents.
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Affiliation(s)
- Meghan Gage
- Epilepsy Research Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa
| | - Madison Golden
- Epilepsy Research Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa
| | - Marson Putra
- Epilepsy Research Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa
| | - Shaunik Sharma
- Epilepsy Research Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa
| | - Thimmasettappa Thippeswamy
- Epilepsy Research Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, Iowa
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17
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Perez SM, Donegan JJ, Lodge DJ. Effect of estrous cycle on schizophrenia-like behaviors in MAM exposed rats. Behav Brain Res 2019; 362:258-265. [PMID: 30660776 PMCID: PMC6394843 DOI: 10.1016/j.bbr.2019.01.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/20/2018] [Accepted: 01/16/2019] [Indexed: 11/28/2022]
Abstract
Although there are clear sex differences in individuals with schizophrenia, preclinical research has historically favored the use of male rats for behavioral studies. The methylazoxymethanol acetate (MAM) model is a gestational disruption model of schizophrenia and has been reported to produce robust behavioral, neurophysiological and anatomical alterations in male rats; however, whether similar effects are observed in female rats is less well known. In this study, we characterize the behavioral, electrophysiological and molecular alterations induced by prenatal MAM administration in female rats while also examining the potential effects of the estrous cycle on schizophrenia-like behaviors. Specifically, MAM-treated female offspring demonstrated deficits in sensorimotor gating, latent inhibition, and social interaction, consistent with those observed in male animals. Interestingly, amphetamine-induced locomotor activity, latent inhibition, and social interaction were also affected by the estrous cycle. To examine the potential cellular mechanisms associated with these behavioral alterations, we analyzed hippocampal parvalbumin (PV) interneurons. Deficits in PV interneuron number and high-frequency gamma oscillations were disrupted in female MAM-treated rats regardless of the stage of the estrous cycle; however, alterations in PV protein expression were more prominent during metestrus/diestrus. Taken together, these data suggest that prenatal MAM exposure in female rats produces robust behavioral, molecular, and physiological deficits consistent with those observed in the male MAM model of schizophrenia. Moreover, our results also suggest that specific schizophrenia-like symptoms can also be influenced by the estrous cycle, and further emphasize the importance of sex as a biological variable when using preclinical models.
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Affiliation(s)
- Stephanie M Perez
- UT Health San Antonio, Department of Pharmacology, Center for Biomedical Neuroscience, 7703 Floyd Curl Drive, MC 7764, San Antonio, TX, 78229, USA.
| | - Jennifer J Donegan
- UT Health San Antonio, Department of Pharmacology, Center for Biomedical Neuroscience, 7703 Floyd Curl Drive, MC 7764, San Antonio, TX, 78229, USA.
| | - Daniel J Lodge
- UT Health San Antonio, Department of Pharmacology, Center for Biomedical Neuroscience, 7703 Floyd Curl Drive, MC 7764, San Antonio, TX, 78229, USA.
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18
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General anesthetic exposure in adolescent rats causes persistent maladaptations in cognitive and affective behaviors and neuroplasticity. Neuropharmacology 2019; 150:153-163. [PMID: 30926450 DOI: 10.1016/j.neuropharm.2019.03.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 01/25/2023]
Abstract
Accumulating evidence indicates that exposure to general anesthetics during infancy and childhood can cause persistent cognitive impairment, alterations in synaptic plasticity, and, to a lesser extent, increased incidence of behavioral disorders. Unfortunately, the developmental parameters of susceptibility to general anesthetics are not well understood. Adolescence is a critical developmental period wherein multiple late developing brain regions may also be vulnerable to enduring general anesthetic effects. Given the breadth of the adolescent age span, this group potentially represents millions more individuals than those exposed during early childhood. In this study, isoflurane exposure within a well-characterized adolescent period in Sprague-Dawley rats elicited immediate and persistent anxiety- and impulsive-like responding, as well as delayed cognitive impairment into adulthood. These behavioral abnormalities were paralleled by atypical dendritic spine morphology in the prefrontal cortex (PFC) and hippocampus (HPC), suggesting delayed anatomical maturation, and shifts in inhibitory function that suggest hypermaturation of extrasynaptic GABAA receptor inhibition. Preventing this hypermaturation of extrasynaptic GABAA receptor-mediated function in the PFC selectively reversed enhanced impulsivity resulting from adolescent isoflurane exposure. Taken together, these data demonstrate that the developmental window for susceptibility to enduring untoward effects of general anesthetics may be much longer than previously appreciated, and those effects may include affective behaviors in addition to cognition.
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19
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Thériault RK, Perreault ML. Hormonal regulation of circuit function: sex, systems and depression. Biol Sex Differ 2019; 10:12. [PMID: 30819248 PMCID: PMC6394099 DOI: 10.1186/s13293-019-0226-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/18/2019] [Indexed: 01/10/2023] Open
Abstract
Major depressive disorder (MDD) is a debilitating chronic illness that is two times more prevalent in women than in men. The mechanisms associated with the increased female susceptibility to depression remain poorly characterized. Aberrant neuronal oscillatory activity within the putative depression network is an emerging mechanism underlying MDD. However, innate sex differences in network activity and its contribution to depression vulnerability have not been well described. In this review, current evidence of sex differences in neuronal oscillatory activity, including the influence of sex hormones and female cycling, will first be described followed by evidence of disrupted neuronal circuit function in MDD and the effects of antidepressant treatment. Lastly, current knowledge of sex differences in MDD-associated aberrant circuit function and oscillatory activity will be highlighted, with an emphasis on the role of sex steroids and female cycling. Collectively, it is clear that there are significant gaps in the literature regarding innate and pathologically associated sex differences in network activity and that the elucidation of these differences is invaluable to our understanding of sex-specific vulnerabilities and therapies for MDD.
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Affiliation(s)
- Rachel-Karson Thériault
- Department of Molecular and Cellular Biology, University of Guelph (ON), 50 Stone Rd. E, Guelph, Ontario N1G 2W1 Canada
- Collaborative Neuroscience Program, University of Guelph (ON), Guelph, Canada
| | - Melissa L. Perreault
- Department of Molecular and Cellular Biology, University of Guelph (ON), 50 Stone Rd. E, Guelph, Ontario N1G 2W1 Canada
- Collaborative Neuroscience Program, University of Guelph (ON), Guelph, Canada
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20
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Payne JL, Maguire J. Pathophysiological mechanisms implicated in postpartum depression. Front Neuroendocrinol 2019; 52:165-180. [PMID: 30552910 PMCID: PMC6370514 DOI: 10.1016/j.yfrne.2018.12.001] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/13/2018] [Accepted: 12/11/2018] [Indexed: 02/06/2023]
Abstract
This review aims to summarize the diverse proposed pathophysiological mechanisms contributing to postpartum depression, highlighting both clinical and basic science research findings. The risk factors for developing postpartum depression are discussed, which may provide insight into potential neurobiological underpinnings. The evidence supporting a role for neuroendocrine changes, neuroinflammation, neurotransmitter alterations, circuit dysfunction, and the involvement of genetics and epigenetics in the pathophysiology of postpartum depression are discussed. This review integrates clinical and preclinical findings and highlights the diversity in the patient population, in which numerous pathophysiological changes may contribute to this disorder. Finally, we attempt to integrate these findings to understand how diverse neurobiological changes may contribute to a common pathological phenotype. This review is meant to serve as a comprehensive resource reviewing the proposed pathophysiological mechanisms underlying postpartum depression.
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Affiliation(s)
- Jennifer L Payne
- Department of Psychiatry, Women's Mood Disorders Center, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Jamie Maguire
- Department of Neuroscience, Tufts University School of Medicine, Boston, MA 02111, USA.
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21
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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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22
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Pang Y, Liu H, Duan G, Liao H, Liu Y, Feng Z, Tao J, Zou Z, Du G, Wan R, Liu P, Deng D. Altered Brain Regional Homogeneity Following Electro-Acupuncture Stimulation at Sanyinjiao (SP6) in Women With Premenstrual Syndrome. Front Hum Neurosci 2018; 12:104. [PMID: 29904344 PMCID: PMC5990869 DOI: 10.3389/fnhum.2018.00104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 03/05/2018] [Indexed: 01/02/2023] Open
Abstract
Background: Premenstrual syndrome (PMS) is a menstrual cycle-related disorder which causes physical and mood changes prior to menstruation and is associated with the functional dysregulation of the brain. Acupuncture is an effective alternative therapy for treating PMS, and sanyinjiao (SP6) is one of the most common acupoints used for improving the symptoms of PMS. However, the mechanism behind acupuncture's efficacy for relieving PMS symptoms remains unclear. The aim of this study was to identify the brain response patterns induced by acupuncture at acupoint SP6 in patients with PMS. Materials and Methods: Twenty-three females with PMS were enrolled in this study. All patients underwent resting-state fMRI data collection before and after 6 min of electroacupuncture stimulation (EAS) at SP6. A regional homogeneity (ReHo) approach was used to compare patients' brain responses before and after EAS at SP6 using REST software. The present study was registered at http://www.chictr.org.cn, and the Clinical Trial Registration Number is ChiCTR-OPC-15005918. Results: EAS at SP6 elicited decreased ReHo value at the bilateral precuneus, right inferior frontal cortex (IFC) and left middle frontal cortex (MFC). In contrast, increased ReHo value was found at the bilateral thalamus, bilateral insula, left putamen and right primary somatosensory cortex (S1). Conclusions: Our study provides an underlying neuroimaging evidence that the aberrant neural activity of PMS patients could be regulated by acupuncture at SP6.
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Affiliation(s)
- Yong Pang
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Huimei Liu
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Gaoxiong Duan
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Hai Liao
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Yanfei Liu
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Zhuo Feng
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Jien Tao
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Zhuocheng Zou
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Guoxiang Du
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Rongchao Wan
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
| | - Peng Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, China
| | - Demao Deng
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, China
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Melón LC, Nolan ZT, Colar D, Moore EM, Boehm SL. Activation of extrasynaptic δ-GABA A receptors globally or within the posterior-VTA has estrous-dependent effects on consumption of alcohol and estrous-independent effects on locomotion. Horm Behav 2017; 95:65-75. [PMID: 28765080 PMCID: PMC5623082 DOI: 10.1016/j.yhbeh.2017.07.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 07/26/2017] [Accepted: 07/26/2017] [Indexed: 11/21/2022]
Abstract
Recent reports support higher than expected rates of binge alcohol consumption among women and girls. Unfortunately, few studies have assessed the mechanisms underlying this pattern of intake in females. Studies in males suggest that alcohol concentrations relevant to the beginning stages of binge intoxication may selectively target tonic GABAergic inhibition mediated by GABAA receptor subtypes expressing the δ-subunit protein (δ-GABAARs). Indeed, administration of agonists that interact with these δ-GABAARs prior to alcohol access can abolish binge drinking behavior in male mice. These δ-GABAARs have also been shown to exhibit estrous-dependent plasticity in regions relevant to drug taking behavior, like the hippocampus and periaqueductal gray. The present experiments were designed to determine whether the estrous cycle would alter binge drinking, or our ability to modulate this pattern of alcohol use with THIP, an agonist with high selectivity and efficacy at δ-GABAARs. Using the Drinking-in-the-Dark (DID) binge-drinking model, regularly cycling female mice were given 2h of daily access to alcohol (20%v/v). Vaginal cytology or vaginal impedance was assessed after drinking sessions to track estrous status. There was no fluctuation in binge drinking associated with the estrous cycle. Both Intra-posterior-VTA administration of THIP and systemic administration of the drug was also associated with an estrous cycle dependent reduction in drinking behavior. Pre-treatment with finasteride to inhibit synthesis of 5α-reduced neurosteroids did not disrupt THIP's effects. Analysis of δ-subunit mRNA from posterior-VTA enriched tissue samples revealed that expression of this GABAA receptor subunit is elevated during diestrus in this region. Taken together, these studies demonstrate that δGABAARs in the VTA are an important target for binge drinking in females and confirm that the estrous cycle is an important moderator of the pharmacology of this GABAA receptor subtype.
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Affiliation(s)
- Laverne C Melón
- Addiction Neuroscience, Department of Psychology, Indiana University/Purdue University-Indianapolis, Indianapolis, IN 46202, USA; Department of Neuroscience, Tufts University School of Medicine, Boston, MA 02111, USA
| | | | - Delphine Colar
- Addiction Neuroscience, Department of Psychology, Indiana University/Purdue University-Indianapolis, Indianapolis, IN 46202, USA
| | - Eileen M Moore
- Center for Behavioral Teratology, Department of Psychology, San Diego State University, San Diego, CA 92120, USA
| | - Stephen L Boehm
- Addiction Neuroscience, Department of Psychology, Indiana University/Purdue University-Indianapolis, Indianapolis, IN 46202, USA.
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24
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Speigel I, Bichler EK, García PS. The Influence of Regional Distribution and Pharmacologic Specificity of GABA AR Subtype Expression on Anesthesia and Emergence. Front Syst Neurosci 2017; 11:58. [PMID: 28878632 PMCID: PMC5572268 DOI: 10.3389/fnsys.2017.00058] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 07/19/2017] [Indexed: 01/31/2023] Open
Abstract
Anesthetics produce unconsciousness by modulating ion channels that control neuronal excitability. Research has shown that specific GABAA receptor (GABAAR) subtypes in particular regions of the central nervous system contribute to different hyperpolarizing conductances, and behaviorally to distinct components of the anesthetized state. The expression of these receptors on the neuron cell surface, and thus the strength of inhibitory neurotransmission, is dynamically regulated by intracellular trafficking mechanisms. Pharmacologic or activity-based perturbations to these regulatory systems have been implicated in pathology of several neurological conditions, and can alter the individual response to anesthesia. Furthermore, studies are beginning to uncover how anesthetic exposure itself elicits enduring changes in subcellular physiology, including the processes that regulate ion channel trafficking. Here, we review the mechanisms that determine GABAAR surface expression, and elaborate on influences germane to anesthesia and emergence. We address known trafficking differences between the intrasynaptic receptors that mediate phasic current and the extra-synaptic receptors mediating tonic current. We also describe neurophysiologic consequences and network-level abnormalities in brain function that result from receptor trafficking aberrations. We hypothesize that the relationship between commonly used anesthetic agents and GABAAR surface expression has direct consequences on mature functioning neural networks and by extension ultimately influence the outcome of patients that undergo general anesthesia. Rational design of new anesthetics, anesthetic techniques, EEG-based monitoring strategies, or emergence treatments will need to take these effects into consideration.
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Affiliation(s)
- Iris Speigel
- Department of Anesthesiology, Emory University School of Medicine, AtlantaGA, United States.,Research Division, Atlanta Veteran's Affairs Medical Center, AtlantaGA, United States
| | - Edyta K Bichler
- Department of Anesthesiology, Emory University School of Medicine, AtlantaGA, United States.,Research Division, Atlanta Veteran's Affairs Medical Center, AtlantaGA, United States
| | - Paul S García
- Department of Anesthesiology, Emory University School of Medicine, AtlantaGA, United States.,Research Division, Atlanta Veteran's Affairs Medical Center, AtlantaGA, United States
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25
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Liao H, Duan G, Liu P, Liu Y, Pang Y, Liu H, Tang L, Tao J, Wen D, Li S, Liang L, Deng D. Altered fractional amplitude of low frequency fluctuation in premenstrual syndrome: A resting state fMRI study. J Affect Disord 2017; 218:41-48. [PMID: 28458114 DOI: 10.1016/j.jad.2017.04.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/28/2017] [Accepted: 04/23/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Premenstrual syndrome (PMS) is becoming highly prevalent among female and is characterized by emotional, physical and behavior symptoms. Previous evidence suggested functional dysregulation of female brain was expected to be involved in the etiology of PMS. The aim of present study was to evaluate the alterations of spontaneous brain activity in PMS patients based on functional magnetic resonance imaging (fMRI). METHODS 20 PMS patients and 21 healthy controls underwent resting-state fMRI scanning during luteal phase. All participants were asked to complete a prospective daily record of severity of problems (DRSP) questionnaire. RESULTS Compared with healthy controls, the results showed that PMS patients had increased fALFF in bilateral precuneus, left hippocampus and left inferior temporal cortex, and decreased fALFF in bilateral anterior cingulate cortex (ACC) and cerebellum at luteal phase. Moreover, the DRSP scores of PMS patients were negatively correlated with the mean fALFF in ACC and positively correlated with the fALFF in precuneus. LIMITATIONS (1) the study did not investigate whether or not abnormal brain activity differences between groups in mid-follicular phase, and within-group changes. between phases.(2) it was relatively limited sample size and the participants were young; (3) fALFF could not provide us with more holistic information of brain network;(4) the comparisons of PMS and premenstrual dysphoric disorder (PMDD) were not involved in the study. CONCLUSIONS The present study shows abnormal spontaneous brain activity in PMS patients revealed by fALFF, which could provide neuroimaging evidence to further improve our understanding of the underlying neural mechanism of PMS.
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Affiliation(s)
- Hai Liao
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Gaoxiong Duan
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Peng Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
| | - Yanfei Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
| | - Yong Pang
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Huimei Liu
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Lijun Tang
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Jien Tao
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Danhong Wen
- Department of Teaching, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Shasha Li
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Lingyan Liang
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - Demao Deng
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China.
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26
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Duan G, Liu H, Pang Y, Liu P, Liu Y, Wang G, Liao H, Tang L, Chen W, Mo X, Wen D, Lin H, Deng D. Hippocampal fractional amplitude of low-frequency fluctuation and functional connectivity changes in premenstrual syndrome. J Magn Reson Imaging 2017; 47:545-553. [PMID: 28577332 DOI: 10.1002/jmri.25775] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/08/2017] [Indexed: 12/16/2022] Open
Affiliation(s)
- Gaoxiong Duan
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Huimei Liu
- Department of Acupuncture; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Yong Pang
- Department of Acupuncture; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Peng Liu
- Life Science Research Center; School of Life Science and Technology, Xidian University; Shaanxi P.R. China
| | - Yanfei Liu
- Life Science Research Center; School of Life Science and Technology, Xidian University; Shaanxi P.R. China
| | - Geliang Wang
- Life Science Research Center; School of Life Science and Technology, Xidian University; Shaanxi P.R. China
| | - Hai Liao
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Lijun Tang
- Department of Acupuncture; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Wenfu Chen
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Xiaping Mo
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Danhong Wen
- Department of Teaching; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Hua Lin
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
| | - Demao Deng
- Department of Radiology; First Affiliated Hospital, Guangxi University of Chinese Medicine; Guangxi P.R. China
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27
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Liao H, Pang Y, Liu P, Liu H, Duan G, Liu Y, Tang L, Tao J, Wen D, Li S, Liang L, Deng D. Abnormal Spontaneous Brain Activity in Women with Premenstrual Syndrome Revealed by Regional Homogeneity. Front Hum Neurosci 2017; 11:62. [PMID: 28243196 PMCID: PMC5303726 DOI: 10.3389/fnhum.2017.00062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/30/2017] [Indexed: 01/14/2023] Open
Abstract
Background: Previous studies have revealed that the etiologies of premenstrual syndrome (PMS) refer to menstrual cycle related brain changes. However, its intrinsic neural mechanism is still unclear. The aim of the present study was to assess abnormal spontaneous brain activity and to explicate the intricate neural mechanism of PMS using resting state functional magnetic resonance imaging (RS-fMRI). Materials and Methods: The data of 20 PMS patients (PMS group) and 21 healthy controls (HC group) were analyzed by regional homogeneity (ReHo) method during the late luteal phase of menstrual cycle. In addition, all the participants were asked to complete a daily record of severity of problems (DRSP) questionnaire. Results: Compared with HC group, the results showed that PMS group had increased ReHo mainly in the bilateral precuneus, left inferior temporal cortex (ITC), right inferior frontal cortex (IFC) and left middle frontal cortex (MFC) and decreased ReHo in the right anterior cingulate cortex (ACC) at the luteal phase. Moreover, the PMS group had higher DRSP scores, and the DRSP scores positively correlated with ReHo in left MFC and negatively correlated with ReHo in the right ACC. Conclusion: Our results suggest that abnormal spontaneous brain activity is found in PMS patients and the severity of symptom is specifically related to the left MFC and right ACC. The present findings may be beneficial to explicate the intricate neural mechanism of PMS.
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Affiliation(s)
- Hai Liao
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Yong Pang
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Peng Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University Xi'an, China
| | - Huimei Liu
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Gaoxiong Duan
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Yanfei Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University Xi'an, China
| | - Lijun Tang
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Jien Tao
- Department of Acupuncture, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Danhong Wen
- Department of Teaching, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Shasha Li
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Lingyan Liang
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
| | - Demao Deng
- Department of Radiology, First Affiliated Hospital, Guangxi University of Chinese Medicine Nanning, China
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28
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Affiliation(s)
- Andrea Barberis
- Neuroscience and Brain Technologies, Post-synaptic Mechanisms of GABAergic Transmission, Fondazione Istituto Italiano di Tecnologia Genova, Italy
| | - Alberto Bacci
- Inserm U 1127, Centre National de la Recherche Scientifique UMR 7225, Sorbonne Universités UPMC Paris 06, UMR S 11 Paris, France ; Institut du Cerveau et de la Moelle Épinière Paris, France
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29
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Ferando I, Mody I. In vitro gamma oscillations following partial and complete ablation of δ subunit-containing GABAA receptors from parvalbumin interneurons. Neuropharmacology 2014; 88:91-8. [PMID: 25261782 DOI: 10.1016/j.neuropharm.2014.09.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/06/2014] [Accepted: 09/08/2014] [Indexed: 10/24/2022]
Abstract
Perisynaptic and extrasynaptic δ subunit-containing GABAA receptors (δ-GABAARs) mediate tonic conductances in many neurons. On principal cells of the neocortex and hippocampus they comprise α4 subunits, whereas they usually contain α1 on various interneurons. Specific characteristics of δ-GABAARs are their pharmacology and high plasticity. In particular δ-GABAARs are sensitive to low concentrations of neurosteroids (NS) and during times of altered NS production (stress, puberty, ovarian cycle and pregnancy) δ-GABAARs expression varies in many neurons regardless of the α subunits they contain, with direct consequences for neuronal excitability and network synchrony. For example δ-GABAARs plasticity on INs underlies modifications in hippocampal γ oscillations during pregnancy or over the ovarian cycle. Most δ-GABAAR-expressing INs in CA3 stratum pyramidale (SP) are parvalbumin (PV) + INs, whose fundamental role in γ oscillations generation and control has been extensively investigated. In this study we reduced or deleted δ-subunits in PV + INs, with the use of a PV/Cre-Gabrd/floxed genetic system. We find that in vitro CA3 γ oscillations of both PV-Gabrd(+/-)and PV-Gabrd(-/-) mice are characterized by higher frequencies than WT controls. The increased frequencies could be lowered to control levels in PV-Gabrd(+/-) by the NS allopregnanolone (3α,5α-tetrahydroprogesterone, 100 nM) but not the synthetic δ-GABAAR positive allosteric modulator 4-Chloro-N-[2-(2-thienyl)imidazo[1,2-a]pyridin-3-yl] benzamide (DS-2, 10 μM). This is consistent with the idea that DS-2, in contrast to ALLO, selectively targets α4/δ-GABAARs but not the α1/δ-GABAARs found on INs. Therefore, development of drugs selective for IN-specific α1/δ-GABAARs may be useful in neurological and psychiatric conditions correlated with altered PV + IN function and aberrant γ oscillations.
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Affiliation(s)
- Isabella Ferando
- Departments of Neurology, The David Geffen School of Medicine, University of California, Los Angeles, CA, USA; Interdepartmental Graduate Program in Molecular, Cellular, and Integrative Physiology, University of California, Los Angeles, CA, USA
| | - Istvan Mody
- Departments of Neurology, The David Geffen School of Medicine, University of California, Los Angeles, CA, USA; Departments of Physiology, The David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
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