1
|
Mei L, Zhou Y, Sun Y, Liu H, Zhang D, Liu P, Shu H. Acetylcholine Muscarinic Receptors in Ventral Hippocampus Modulate Stress-Induced Anxiety-Like Behaviors in Mice. Front Mol Neurosci 2020; 13:598811. [PMID: 33384583 PMCID: PMC7769836 DOI: 10.3389/fnmol.2020.598811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic stress exposure increases the risk of developing various neuropsychiatric illnesses. The ventral hippocampus (vHPC) is central to affective and cognitive processing and displays a high density of acetylcholine (ACh) muscarinic receptors (mAChRs). However, the precise role of vHPC mAChRs in anxiety remains to be fully investigated. In this study, we found that chronic restraint stress (CRS) induced social avoidance and anxiety-like behaviors in mice and increased mAChR expression in the vHPC. CRS increased the vHPC ACh release in behaving mice. Moreover, CRS altered the synaptic activities and enhanced neuronal activity of the vHPC neurons. Using pharmacological and viral approaches, we showed that infusing the antagonist of mAChRs or decreasing their expression in the vHPC attenuated the anxiety-like behavior and rescued the social avoidance behaviors in mice probably due to suppression of vHPC neuronal activity and its excitatory synaptic transmission. Our results suggest that the changes of neuronal activity and synaptic transmission in the vHPC mediated by mAChRs may play an important role in stress-induced anxiety-like behavior, providing new insights into the pathological mechanism and potential pharmacological target for anxiety disorders.
Collapse
Affiliation(s)
- Li Mei
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yu Zhou
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yi Sun
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hong Liu
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Dengwen Zhang
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Pingping Liu
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Haihua Shu
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| |
Collapse
|
2
|
Ghoshal A, Moran SP, Dickerson JW, Joffe ME, Grueter BA, Xiang Z, Lindsley CW, Rook JM, Conn PJ. Role of mGlu 5 Receptors and Inhibitory Neurotransmission in M 1 Dependent Muscarinic LTD in the Prefrontal Cortex: Implications in Schizophrenia. ACS Chem Neurosci 2017; 8:2254-2265. [PMID: 28679049 DOI: 10.1021/acschemneuro.7b00167] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Selective potentiation of the mGlu5 subtype of metabotropic glutamate (mGlu) receptor using positive allosteric modulators (PAMs) has robust cognition-enhancing effects in rodent models that are relevant for schizophrenia. Until recently, these effects were thought to be due to potentiation of mGlu5-induced modulation of NMDA receptor (NMDAR) currents and NMDAR-dependent synaptic plasticity. However, "biased" mGlu5 PAMs that do not potentiate mGlu5 effects on NMDAR currents show efficacy that is similar to that of prototypical mGlu5 PAMs, suggesting that NMDAR-independent mechanisms must be involved in these actions. We now report that synaptic activation of mGlu5 is required for a form of long-term depression (mLTD) in mouse prefrontal cortex (PFC) that is induced by activation of M1 muscarinic acetylcholine (mAChR) receptors, which was previously thought to be independent of mGlu5 activation. Interestingly, a biased mGlu5 PAM, VU0409551, that does not potentiate mGlu5 modulation of NMDAR currents, potentiated induction of mLTD. Furthermore, coactivation of mGlu5 and M1 receptors increased GABAA-dependent inhibitory tone in the PFC pyramidal neurons, which likely contributes to the observed mLTD. Finally, systemic administration of the biased mGlu5 PAM reversed deficits in mLTD and associated cognitive deficits in a model of cortical disruption caused by repeated phencyclidine exposure that is relevant for schizophrenia and was previously shown to be responsive to selective M1 muscarinic receptor PAMs. These studies provide exciting new insights into a novel mechanism by which mGlu5 PAMs can reverse deficits in PFC function and cognition that is independent of modulation of NMDAR currents.
Collapse
Affiliation(s)
- Ayan Ghoshal
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Sean P. Moran
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Jonathan W. Dickerson
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Max E. Joffe
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Brad A. Grueter
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Zixiu Xiang
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Craig W. Lindsley
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - Jerri M. Rook
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| | - P. Jeffrey Conn
- Department of Pharmacology,
Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37240, United States
| |
Collapse
|
3
|
Hou Z, Jiang W, Yin Y, Zhang Z, Yuan Y. The Current Situation on Major Depressive Disorder in China: Research on Mechanisms and Clinical Practice. Neurosci Bull 2016; 32:389-97. [PMID: 27237579 DOI: 10.1007/s12264-016-0037-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 05/11/2016] [Indexed: 12/12/2022] Open
Abstract
Depression is the most disabling disorder worldwide that accounts for the highest proportion of global burden attributable to mental disorders. Major depressive disorder (MDD) is characterized by deep sadness, reduced energy, vegetative nervous system dysregulation, cognitive dysfunction, and even a high suicidal tendency. Although other treatment choices are available, antidepressant medication is the front-line treatment option for MDD. Regarding clinical efficacy, only ~50% of patients respond to frontline antidepressants, and <33% obtain remission. Currently, objective indexes to guide clinical decisions are still lacking. Furthermore, knowledge about the neurobiological mechanisms underlying discrepant antidepressant outcomes is still also fragmentary. In the present review, we discuss the current research progress and clinical opinions on MDD in China.
Collapse
Affiliation(s)
- Zhenghua Hou
- Department of Psychosomatics and Psychiatry, Institute of Psychosomatic Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, China
| | - Wenhao Jiang
- Department of Psychosomatics and Psychiatry, Institute of Psychosomatic Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, China
| | - Yingying Yin
- Department of Psychosomatics and Psychiatry, Institute of Psychosomatic Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, China
| | - Zhijun Zhang
- Department of Neurology, Institute of Neuropsychiatry, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, China
| | - Yonggui Yuan
- Department of Psychosomatics and Psychiatry, Institute of Psychosomatic Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, 210009, China.
| |
Collapse
|
4
|
Fuhl A, Müller-Dahlhaus F, Lücke C, Toennes SW, Ziemann U. Low Doses of Ethanol Enhance LTD-like Plasticity in Human Motor Cortex. Neuropsychopharmacology 2015; 40:2969-80. [PMID: 26038159 PMCID: PMC4864632 DOI: 10.1038/npp.2015.151] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 05/25/2015] [Accepted: 05/25/2015] [Indexed: 12/26/2022]
Abstract
Humans liberally use ethanol for its facilitating effects on social interactions but its effects on central nervous system function remain underexplored. We have recently described that very low doses of ethanol abolish long-term potentiation (LTP)-like plasticity in human cortex, most likely through enhancement of tonic inhibition [Lücke et al, 2014, Neuropsychopharmacology 39:1508-18]. Here, we studied the effects of low-dose ethanol on long-term depression (LTD)-like plasticity. LTD-like plasticity was induced in human motor cortex by paired associative transcranial magnetic stimulation (PASLTD), and measured as decreases of motor evoked potential input-output curve (IO-curve). In addition, sedation was measured by decreases in saccade peak velocity (SPV). Ethanol in two low doses (EtOH<10mM, EtOH<20mM) was compared to single oral doses of alprazolam (APZ, 1mg) a classical benzodiazepine, and zolpidem (ZLP, 10 mg), a non-benzodiazepine hypnotic, in a double-blinded randomized placebo-controlled crossover design in ten healthy human subjects. EtOH<10mM and EtOH<20mM but not APZ or ZLP enhanced the PASLTD-induced LTD-like plasticity, while APZ and ZLP but not EtOH<10mM or EtOH<20mM decreased SPV. Non-sedating low doses of ethanol, easily reached during social drinking, enhance LTD-like plasticity in human cortex. This effect is most likely explained by the activation of extrasynaptic α4-subunit containing gamma-aminobutyric type A receptors by low-dose EtOH, resulting in increased tonic inhibition. Findings may stimulate cellular research on the role of tonic inhibition in regulating excitability and plasticity of cortical neuronal networks.
Collapse
Affiliation(s)
- Anna Fuhl
- Department of Neurology, Goethe-University, Frankfurt am Main, Germany
| | - Florian Müller-Dahlhaus
- Department of Neurology, Goethe-University, Frankfurt am Main, Germany,Department of Neurology & Stroke, and Hertie Institute for Clinical Brain Research, Eberhard Karls University, Tübingen, Germany
| | - Caroline Lücke
- Department of Neurology, Goethe-University, Frankfurt am Main, Germany,Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe-University, Frankfurt am Main, Germany
| | - Stefan W Toennes
- Department of Forensic Toxicology, Goethe-University, Frankfurt am Main, Germany
| | - Ulf Ziemann
- Department of Neurology, Goethe-University, Frankfurt am Main, Germany,Department of Neurology & Stroke, and Hertie Institute for Clinical Brain Research, Eberhard Karls University, Tübingen, Germany,Department of Neurology & Stroke, and Hertie Institute for Clinical Brain Research, Eberhard Karls University Tübingen, Hoppe-Seyler-Str. 3, Tübingen, D-72076, Germany, Tel: +49 7071 2982049, Fax: +49 7071 295260, E-mail:
| |
Collapse
|
5
|
Lim Y, Zhong JH, Zhou XF. Development of mature BDNF-specific sandwich ELISA. J Neurochem 2015; 134:75-85. [PMID: 25824396 DOI: 10.1111/jnc.13108] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 03/23/2015] [Accepted: 03/24/2015] [Indexed: 01/19/2023]
Abstract
Mature brain-derived neurotrophic factor (mBDNF) plays a vital role in the nervous system, whereas proBDNF elicits neurodegeneration and neuronal apoptosis. Although current enzyme-linked immunosorbent assay (ELISA) has been widely used to measure BDNF levels, it cannot differentiate mBDNF from proBDNF. As the function of proBDNF differs from mBDNF, it is necessary to establish an ELISA assay specific for the detection of mBDNF. Therefore, we aimed to establish a new mBDNF-specific sandwich ELISA. In this study, we have screened and found a combination of antibodies for a sandwich ELISA. A monoclonal antibody and sheep anti-BDNF were chosen as capture and detection antibody for sandwich ELISA respectively. The new ELISA showed no cross-reactivity to human recombinant NT-3, NT-4, nerve growth factor and negligible cross-reactivity (0.99-4.99%) for proBDNF compared to commercial ELISA kits (33.18-91.09%). The application of the new mBDNF ELISA was shown through the measurement of mBDNF levels in different brain regions of rats and in the brain of β-site amyloid precursor protein cleaving enzyme 1 (BACE1)(-/-) and WT mice and compared to western blot. Overall, this new ELISA will be useful for the measurement of mBDNF levels with high specificity. As the function of proBDNF differs from mBDNF (mature BDNF), it is necessary to establish an ELISA specific for the detection of mBDNF. Here, we present a novel sandwich ELISA which detects mBDNF with high specificity. This new ELISA will be useful for the measurement of mBDNF levels with high specificity in various human and animal tissues. proBDNF, precursor of BDNF; BDNF, brain-derived neurotrophic factor; NT-3, neurotrophin-3; NT-4, neurotrophin-4; NGF, nerve growth factor.
Collapse
Affiliation(s)
- Yoon Lim
- School of Pharmacy and Medical Sciences, Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide, SA, Australia.,Department of Human Physiology, Centre for Neuroscience, University of Flinders, Adelaide, SA, Australia
| | - Jin-Hua Zhong
- School of Pharmacy and Medical Sciences, Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide, SA, Australia
| |
Collapse
|