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Carballo LH, Li P, Senek R, Yan Z. Systemic histone deacetylase inhibition ameliorates the aberrant responses to acute stress in socially isolated male mice. J Physiol 2024; 602:2047-2060. [PMID: 38500302 PMCID: PMC11068487 DOI: 10.1113/jp285875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/01/2024] [Indexed: 03/20/2024] Open
Abstract
Adverse experiences in early life can induce maladaptive responses to acute stress in later life. Chronic social isolation during adolescence is an early life adversity that can precipitate stress-related psychiatric disorders. We found that male mice after 8 weeks of adolescent social isolation (SI) have markedly increased aggression after being exposed to 2 h of restraint stress (RS), which was accompanied by a significant increase of AMPA receptor- and NMDA receptor-mediated synaptic transmission in prefrontal cortex (PFC) pyramidal neurons of SIRS males. Compared to group-housed counterparts, SIRS males exhibited a significantly decreased level of histone H3 acetylation in PFC. Systemic administration of class I histone deacetylase inhibitors, romidepsin or MS-275, ameliorated the aggressive behaviour, as well as general social interaction deficits, of SIRS males. Electrophysiological recordings also found normalization of PFC glutamatergic currents by romidepsin treatment of SIRS male mice. These results revealed an epigenetic mechanism and intervention avenue for aggression induced by chronic social isolation. KEY POINTS: Adolescent chronic social isolation can precipitate stress-related psychiatric disorders. A significant increase of glutamatergic transmission is found in the prefrontal cortex (PFC) of socially isolated male mice exposed to an acute stress (SIRS). Treatment with class I histone deacetylase (HDAC) inhibitors ameliorates the aggressive behaviour and social interaction deficits of SIRS males, and normalizes glutamatergic currents in PFC neurons. It provides an epigenetic mechanism and intervention avenue for aberrant stress responses induced by chronic social isolation.
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Affiliation(s)
- Luis Hernandez Carballo
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY 14203, USA
| | - Pei Li
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY 14203, USA
| | - Rachel Senek
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY 14203, USA
| | - Zhen Yan
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY 14203, USA
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Petrican R, Fornito A, Boyland E. Lifestyle Factors Counteract the Neurodevelopmental Impact of Genetic Risk for Accelerated Brain Aging in Adolescence. Biol Psychiatry 2024; 95:453-464. [PMID: 37393046 DOI: 10.1016/j.biopsych.2023.06.023] [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: 03/10/2023] [Revised: 05/30/2023] [Accepted: 06/19/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND The transition from childhood to adolescence is characterized by enhanced neural plasticity and a consequent susceptibility to both beneficial and adverse aspects of one's milieu. METHODS To understand the implications of the interplay between protective and risk-enhancing factors, we analyzed longitudinal data from the Adolescent Brain Cognitive Development (ABCD) Study (n = 834; 394 female). We probed the maturational correlates of positive lifestyle variables (friendships, parental warmth, school engagement, physical exercise, healthy nutrition) and genetic vulnerability to neuropsychiatric disorders (major depressive disorder, Alzheimer's disease, anxiety disorders, bipolar disorder, schizophrenia) and sought to further elucidate their implications for psychological well-being. RESULTS Genetic risk factors and lifestyle buffers showed divergent relationships with later attentional and interpersonal problems. These effects were mediated by distinguishable functional neurodevelopmental deviations spanning the limbic, default mode, visual, and control systems. More specifically, greater genetic vulnerability was associated with alterations in the normative maturation of areas rich in dopamine (D2), glutamate, and serotonin receptors and of areas with stronger expression of astrocytic and microglial genes, a molecular signature implicated in the brain disorders discussed here. Greater availability of lifestyle buffers predicted deviations in the normative functional development of higher density GABAergic (gamma-aminobutyric acidergic) receptor regions. The two profiles of neurodevelopmental alterations showed complementary roles in protection against psychopathology, which varied with environmental stress levels. CONCLUSIONS Our results underscore the importance of educational involvement and healthy nutrition in attenuating the neurodevelopmental sequelae of genetic risk factors. They also underscore the importance of characterizing early-life biomarkers associated with adult-onset pathologies.
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Affiliation(s)
- Raluca Petrican
- Institute of Population Health, Department of Psychology, University of Liverpool, Liverpool, United Kingdom.
| | - Alex Fornito
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Monash Biomedical Imaging, Monash University, Melbourne, Victoria, Australia
| | - Emma Boyland
- Institute of Population Health, Department of Psychology, University of Liverpool, Liverpool, United Kingdom
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Zhong P, Cao Q, Yan Z. Distinct and Convergent Alterations of Entorhinal Cortical Circuits in Two Mouse Models for Alzheimer's Disease and Related Disorders. J Alzheimers Dis 2024; 98:1121-1131. [PMID: 38489190 DOI: 10.3233/jad-231413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Background The impairment of neural circuits controlling cognitive processes has been implicated in the pathophysiology of Alzheimer's disease and related disorders (ADRD). However, it is largely unclear what circuits are specifically changed in ADRD, particularly at the early stage. Objective Our goal of this study is to reveal the functional changes in the circuit of entorhinal cortex (EC), an interface between neocortex and hippocampus, in AD. Methods Electrophysiological, optogenetic and chemogenetic approaches were used to examine and manipulate entorhinal cortical circuits in amyloid-β familial AD model (5×FAD) and tauopathy model (P301S Tau). Results We found that, compared to wild-type mice, electrical stimulation of EC induced markedly smaller responses in subiculum (hippocampal output) of 5×FAD mice (6-month-old), suggesting that synaptic communication in the EC to subiculum circuit is specifically blocked in this AD model. In addition, optogenetic stimulation of glutamatergic terminals from prefrontal cortex (PFC) induced smaller responses in EC of 5×FAD and P301S Tau mice (6-month-old), suggesting that synaptic communication in the PFC to EC pathway is compromised in both ADRD models. Chemogenetic activation of PFC to EC pathway did not affect the bursting activity of EC neurons in 5×FAD mice, but partially restored the diminished EC neuronal activity in P301S Tau mice. Conclusions These data suggest that 5×FAD mice has a specific impairment of short-range hippocampal gateway (EC to subiculum), which may be caused by amyloid-β deposits; while two ADRD models have a common impairment of long-range cortical to hippocampal circuit (PFC to EC), which may be caused by microtubule/tau-based transport deficits. These circuit deficits provide a pathophysiological basis for unique and common impairments of various cognitive processes in ADRD conditions.
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Affiliation(s)
- Ping Zhong
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Qing Cao
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Zhen Yan
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
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Xing Y, Zan C, Liu L. Recent advances in understanding neuronal diversity and neural circuit complexity across different brain regions using single-cell sequencing. Front Neural Circuits 2023; 17:1007755. [PMID: 37063385 PMCID: PMC10097998 DOI: 10.3389/fncir.2023.1007755] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 02/16/2023] [Indexed: 04/18/2023] Open
Abstract
Neural circuits are characterized as interconnecting neuron networks connected by synapses. Some kinds of gene expression and/or functional changes of neurons and synaptic connections may result in aberrant neural circuits, which has been recognized as one crucial pathological mechanism for the onset of many neurological diseases. Gradual advances in single-cell sequencing approaches with strong technological advantages, as exemplified by high throughput and increased resolution for live cells, have enabled it to assist us in understanding neuronal diversity across diverse brain regions and further transformed our knowledge of cellular building blocks of neural circuits through revealing numerous molecular signatures. Currently published transcriptomic studies have elucidated various neuronal subpopulations as well as their distribution across prefrontal cortex, hippocampus, hypothalamus, and dorsal root ganglion, etc. Better characterization of brain region-specific circuits may shed light on new pathological mechanisms involved and assist in selecting potential targets for the prevention and treatment of specific neurological disorders based on their established roles. Given diverse neuronal populations across different brain regions, we aim to give a brief sketch of current progress in understanding neuronal diversity and neural circuit complexity according to their locations. With the special focus on the application of single-cell sequencing, we thereby summarize relevant region-specific findings. Considering the importance of spatial context and connectivity in neural circuits, we also discuss a few published results obtained by spatial transcriptomics. Taken together, these single-cell sequencing data may lay a mechanistic basis for functional identification of brain circuit components, which links their molecular signatures to anatomical regions, connectivity, morphology, and physiology. Furthermore, the comprehensive characterization of neuron subtypes, their distributions, and connectivity patterns via single-cell sequencing is critical for understanding neural circuit properties and how they generate region-dependent interactions in different context.
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Affiliation(s)
- Yu Xing
- Department of Neurology, Beidahuang Industry Group General Hospital, Harbin, China
| | - Chunfang Zan
- Institute for Stroke and Dementia Research (ISD), LMU Klinikum, Ludwig-Maximilian-University (LMU), Munich, Germany
| | - Lu Liu
- Munich Medical Research School (MMRS), LMU Klinikum, Ludwig-Maximilian-University (LMU), Munich, Germany
- *Correspondence: Lu Liu, ,
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Ma K, Taylor C, Williamson M, Newton SS, Qin L. Diminished activity-dependent BDNF signaling differentially causes autism-like behavioral deficits in male and female mice. Front Psychiatry 2023; 14:1182472. [PMID: 37205980 PMCID: PMC10189061 DOI: 10.3389/fpsyt.2023.1182472] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/11/2023] [Indexed: 05/21/2023] Open
Abstract
Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders with strong genetic heterogeneity and more prevalent in males than females. Recent human genetic studies have identified multiple high-risk genes for ASD, which produce similar phenotypes, indicating that diverse genetic factors converge to common molecular pathways. We and others have hypothesized that activity-dependent neural signaling is a convergent molecular pathway dysregulated in ASD. However, the causal link between diminished activity-dependent neural signaling and ASD remains unclear. Brain-derived neurotrophic factor (BDNF) is a key molecule mediating activity-dependent neural signaling. We therefore hypothesize that diminished activity-dependent BDNF signaling could confer autism-like behavioral deficits. Here, we investigated the effect of diminished activity-dependent BDNF signaling on autism-like behavioral deficits by using mice with genetic knock-in of a human BDNF methionine (Met) allele, which has decreased activity-dependent BDNF release without altering basal BDNF level. Compared with wild-type (WT) controls, diminished activity-dependent BDNF signaling similarly induced anxiety-like behaviors in male and female mice. Notably, diminished activity-dependent BDNF signaling differentially resulted in autism-like social deficits and increased self-grooming in male and female mice, and male mice were more severe than female mice. Again, sexually dimorphic spatial memory deficits were observed in female BDNF+/Met mice, but not in male BDNF+/Met mice. Our study not only reveals a causal link between diminished activity-dependent BDNF signaling and ASD-like behavioral deficits, but also identifies previously underappreciated sex-specific effect of diminished activity-dependent BDNF signaling in ASD. These mice with genetic knock-in of the human BDNF Met variant provide a distinct mouse model for studying the cellular and molecular mechanisms underlying diminished activity-dependent neural signaling, the common molecular pathway dysregulated in ASD.
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Affiliation(s)
- Kaijie Ma
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Connie Taylor
- Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States
| | - Mark Williamson
- Biostatistics, Epidemiology, and Research Design Core, University of North Dakota, Grand Forks, ND, United States
| | - Samuel S. Newton
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Luye Qin
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
- *Correspondence: Luye Qin,
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Peng Y, Yuan C, Zhang Y. The role of the basal forebrain in general anesthesia. IBRAIN 2022; 9:102-110. [PMID: 37786520 PMCID: PMC10529324 DOI: 10.1002/ibra.12082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 10/04/2023]
Abstract
The basal forebrain is a group of nerve nuclei on the ventral side of the ventral ganglion, composed of γ-aminobutyric acid neurons, glutamatergic neurons, cholinergic neurons, and orexigenic neurons. Previous studies have focused on the involvement of the basal forebrain in regulating reward, learning, movement, sleep-awakening, and other neurobiological behaviors, but its role in the regulation of general anesthesia has not been systematically elucidated. Therefore, the different neuronal subtypes in the basal forebrain and projection pathways in general anesthesia will be discussed in this paper. In this paper, we aim to determine and elaborate on the role of the basal forebrain in general anesthesia and the development of theoretical research and provide a new theory.
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Affiliation(s)
- Yi‐Ting Peng
- Department of AnethesiologyThe Second Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
- Guizhou Key Laboratory of Anesthesia and Organ ProtectionZunyi Medical UniversityZunyiGuizhouChina
- School of AnesthesiologyZunyi Medical UniversityZunyiGuizhouChina
| | - Cheng‐Dong Yuan
- Department of AnethesiologyThe Second Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
- Guizhou Key Laboratory of Anesthesia and Organ ProtectionZunyi Medical UniversityZunyiGuizhouChina
- School of AnesthesiologyZunyi Medical UniversityZunyiGuizhouChina
| | - Yi Zhang
- Department of AnethesiologyThe Second Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
- Guizhou Key Laboratory of Anesthesia and Organ ProtectionZunyi Medical UniversityZunyiGuizhouChina
- School of AnesthesiologyZunyi Medical UniversityZunyiGuizhouChina
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Zhang B, Chen T, Cao M, Yuan C, Reiter RJ, Zhao Z, Zhao Y, Chen L, Fan W, Wang X, Zhou X, Li C. Gut Microbiota Dysbiosis Induced by Decreasing Endogenous Melatonin Mediates the Pathogenesis of Alzheimer's Disease and Obesity. Front Immunol 2022; 13:900132. [PMID: 35619714 PMCID: PMC9127079 DOI: 10.3389/fimmu.2022.900132] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/13/2022] [Indexed: 01/15/2023] Open
Abstract
Lifestyle choices, external environment, aging, and other factors influence the synthesis of melatonin. Although the physiological functions of melatonin have been widely studied in relation to specific organs, the systemic effects of endogenous melatonin reduction has not been reported. This study evaluates the systemic changes and possible pathogenic risks in an endogenous melatonin reduction (EMR) mouse model deficient in the rate limiting enzyme in melatonin production, arylalkylamine N-acetyltransferase (Aanat) gene. Using this model, we identified a new relationship between melatonin, Alzheimer’s disease (AD), and gut microbiota. Systematic changes were evaluated using multi-omics analysis. Fecal microbiota transplantation (FMT) was performed to examine the role of gut microbiota in the pathogenic risks of EMR. EMR mice exhibited a pan-metabolic disorder, with significant transcriptome changes in 11 organs, serum metabolome alterations as well as microbiota dysbiosis. Microbiota dysbiosis was accompanied by increased gut permeability along with gut and systemic inflammation. Correlation analysis revealed that systemic inflammation may be related to the increase of Ruminiclostridium_5 relative abundance. 8-month-old EMR mice had AD-like phenotypes, including Iba-1 activation, A β protein deposition and decreased spatial memory ability. Moreover, EMR mice showed decreased anti stress ability, under high-fat diet, EMR mice had greater body weight and more obvious hepatic steatosis compared with WT group. FMT improved gut permeability, systemic inflammation, and AD-related phenotypes, while reducing obesity in EMR mice. Our findings suggest EMR causes systemic changes mediated by gut microbiota dysbiosis, which may be a pathogenic factor for AD and obesity, we further proved the gut microbiota is a potential target for the prevention and treatment of AD and obesity.
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Affiliation(s)
- Boqi Zhang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Tong Chen
- College of Animal Sciences, Jilin University, Changchun, China
| | - Maosheng Cao
- College of Animal Sciences, Jilin University, Changchun, China
| | - Chenfeng Yuan
- College of Animal Sciences, Jilin University, Changchun, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, United States
| | - Zijiao Zhao
- College of Animal Sciences, Jilin University, Changchun, China
| | - Yun Zhao
- College of Animal Sciences, Jilin University, Changchun, China
| | - Lu Chen
- College of Animal Sciences, Jilin University, Changchun, China
| | - Wenjing Fan
- College of Animal Sciences, Jilin University, Changchun, China
| | - Xin Wang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Xu Zhou
- College of Animal Sciences, Jilin University, Changchun, China
| | - Chunjin Li
- College of Animal Sciences, Jilin University, Changchun, China
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