首页 > 最新文献

Neurobiology of Stress最新文献

英文 中文
Intra-BLA alteration of interneurons’ modulation of activity in rats, reveals a dissociation between effects on anxiety symptoms and extinction learning 大鼠神经元间活动调节的 BLA 内改变揭示了对焦虑症状和消退学习的不同影响
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-10-17 DOI: 10.1016/j.ynstr.2024.100681
Rinki Saha , Lisa-Sophie Wüstner , Darpan Chakraborty , Rachel Anunu , Silvia Mandel , Joyeeta Dutta Hazra , Martin Kriebel , Hansjuergen Volkmer , Hanoch Kaphzan , Gal Richter-Levin
The basolateral amygdala (BLA) is a dynamic brain region involved in emotional experiences and subject to long-term plasticity. The BLA also modulates activity, plasticity, and related behaviors associated with other brain regions, including the mPFC and hippocampus. Accordingly, intra-BLA plasticity can be expected to alter both BLA-dependent behaviors and behaviors mediated by other brain regions. Lasting intra-BLA plasticity may be considered a form of metaplasticity, since it will affect subsequent plasticity and response to challenges later on. Activity within the BLA is tightly modulated by GABAergic interneurons, and thus inducing lasting alteration of GABAergic modulation of principal neurons may have an impactful metaplastic effect on BLA functioning. Previously, we demonstrated that intra-BLA knockdown (KD) of neurofascin (NF) reduced GABAergic synapses exclusively at the axon initial segment (AIS). Here, by reducing the expression of the tyrosine kinase receptor ephrin A7 (EphA7), we selectively impaired the modulatory function of a different subpopulation of interneurons, specifically targeting the soma and proximal dendrites of principal neurons. This perturbation induced an expected reduction in the spontaneous inhibitory synaptic input and an increase in the excitatory spontaneous synaptic activity, most probably due to the reduction of inhibitory tone. Moreover, this increased synaptic activity was followed by a reduction in intrinsic excitability. While intra-BLA NF-KD resulted in impaired extinction learning, without increased symptoms of anxiety, intra-BLA reduction of EphA7 expression resulted in increased symptoms of anxiety, as measured in the elevated plus maze, but without affecting fear conditioning or extinction learning. These results confirm the role of the BLA and intra-BLA metaplasticity in stress-induced increased anxiety symptoms and in impaired fear extinction learning but reveals a difference in intra-BLA mechanisms involved. The results also confirm the contribution of GABAergic interneurons to these effects but indicate selective roles for different subpopulations of intra-BLA interneurons.
杏仁基底外侧(BLA)是一个动态脑区,参与情绪体验并具有长期可塑性。基底外侧杏仁核还能调节其他脑区的活动、可塑性和相关行为,包括前脑皮质和海马。因此,BLA内部的可塑性可望改变依赖于BLA的行为和由其他脑区介导的行为。BLA内的持久可塑性可被视为一种元可塑性,因为它将影响以后的可塑性和对挑战的反应。BLA内的活动受到GABA能中间神经元的严格调控,因此诱导持久改变GABA能对主要神经元的调控可能会对BLA的功能产生影响。此前,我们曾证实,在BLA内敲除(KD)神经瀑蛋白(NF)会减少GABA能突触,而这种突触只出现在轴突起始节段(AIS)。在这里,通过减少酪氨酸激酶受体ephrin A7(EphA7)的表达,我们选择性地损害了不同亚群中间神经元的调节功能,特别是针对主神经元的体节和近端树突。这种扰动引起了自发抑制性突触输入的预期减少和兴奋性自发突触活动的增加,这很可能是由于抑制张力的降低。此外,突触活动增加后,内在兴奋性也随之降低。BLA内的NF-KD会导致消减学习受损,但不会增加焦虑症状,而BLA内减少EphA7的表达会导致焦虑症状增加,这是在高架加迷宫中测得的结果,但不会影响恐惧条件反射或消减学习。这些结果证实了BLA和BLA内变态反应在应激诱导的焦虑症状加重和恐惧消退学习受损中的作用,但揭示了BLA内机制的不同。这些结果还证实了GABA能中间神经元对这些效应的贡献,但表明了BLA内中间神经元不同亚群的选择性作用。
{"title":"Intra-BLA alteration of interneurons’ modulation of activity in rats, reveals a dissociation between effects on anxiety symptoms and extinction learning","authors":"Rinki Saha ,&nbsp;Lisa-Sophie Wüstner ,&nbsp;Darpan Chakraborty ,&nbsp;Rachel Anunu ,&nbsp;Silvia Mandel ,&nbsp;Joyeeta Dutta Hazra ,&nbsp;Martin Kriebel ,&nbsp;Hansjuergen Volkmer ,&nbsp;Hanoch Kaphzan ,&nbsp;Gal Richter-Levin","doi":"10.1016/j.ynstr.2024.100681","DOIUrl":"10.1016/j.ynstr.2024.100681","url":null,"abstract":"<div><div>The basolateral amygdala (BLA) is a dynamic brain region involved in emotional experiences and subject to long-term plasticity. The BLA also modulates activity, plasticity, and related behaviors associated with other brain regions, including the mPFC and hippocampus. Accordingly, intra-BLA plasticity can be expected to alter both BLA-dependent behaviors and behaviors mediated by other brain regions. Lasting intra-BLA plasticity may be considered a form of metaplasticity, since it will affect subsequent plasticity and response to challenges later on. Activity within the BLA is tightly modulated by GABAergic interneurons, and thus inducing lasting alteration of GABAergic modulation of principal neurons may have an impactful metaplastic effect on BLA functioning. Previously, we demonstrated that intra-BLA knockdown (KD) of neurofascin (NF) reduced GABAergic synapses exclusively at the axon initial segment (AIS). Here, by reducing the expression of the tyrosine kinase receptor ephrin A7 (EphA7), we selectively impaired the modulatory function of a different subpopulation of interneurons, specifically targeting the soma and proximal dendrites of principal neurons. This perturbation induced an expected reduction in the spontaneous inhibitory synaptic input and an increase in the excitatory spontaneous synaptic activity, most probably due to the reduction of inhibitory tone. Moreover, this increased synaptic activity was followed by a reduction in intrinsic excitability. While intra-BLA NF-KD resulted in impaired extinction learning, without increased symptoms of anxiety, intra-BLA reduction of EphA7 expression resulted in increased symptoms of anxiety, as measured in the elevated plus maze, but without affecting fear conditioning or extinction learning. These results confirm the role of the BLA and intra-BLA metaplasticity in stress-induced increased anxiety symptoms and in impaired fear extinction learning but reveals a difference in intra-BLA mechanisms involved. The results also confirm the contribution of GABAergic interneurons to these effects but indicate selective roles for different subpopulations of intra-BLA interneurons.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100681"},"PeriodicalIF":4.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transcriptomic analysis of rat prefrontal cortex following chronic stress induced by social isolation – Relevance to psychiatric and neurodevelopmental illness, and implications for treatment 社会隔离诱发慢性压力后大鼠前额叶皮层的转录组分析--与精神病和神经发育疾病的相关性以及对治疗的影响
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-10-17 DOI: 10.1016/j.ynstr.2024.100679
Jen-Yin Goh , Patricia Rueda , Joy Taylor , Alex Rathbone , Daniel Scott , Christopher J. Langmead , Kevin C.F. Fone , Gregory D. Stewart , Madeleine V. King
Social isolation is an established risk factor for psychiatric illness, and became increasingly topical with the spread of SARS-CoV-2. We used RNA sequencing (RNA-Seq) to enable unbiased assessment of transcriptomic changes within the prefrontal cortex (PFC) of isolation-reared rats. To provide insight into the relevance of this manipulation for studying human illness, we compared differentially expressed genes (DEGs) and enriched biological functions against datasets involving post-mortem frontal cortical tissue from patients with psychiatric and neurodevelopmental illnesses. Sixteen male Sprague-Dawley rats were reared in groups of four or individually from weaning on postnatal day (PND) 22–24 until PFC tissue collection for RNA-Seq (PND64-66). We identified a total of 183 DEGs in isolates, of which 128 mirrored those in PFC tissue from patients with stress-related mental illnesses and/or neurodevelopmental conditions featuring social deficits. Seventy-one encode proteins classed as druggable by the gene-drug interaction database. Interestingly there are antagonists or inhibitors for the products of three of these up-regulated DEGs (Hrh3, Snca and Sod1) and agonists or activators for products of six of these down-regulated DEGs (Chrm4, Klf2, Lrrk2, Nr4a1, Nr4a3 and Prkca). Some have already undergone pre-clinical and clinical evaluation, and studies with the remainder may be warranted. Changes to Hrh3, Sod1, Chrm4, Lrrk2, Nr4a1 and Prkca were replicated in an independent cohort of sixteen male Sprague-Dawley rats via quantitative reverse transcription polymerase chain reaction (qRT-PCR). Our findings support the continued use of post-weaning isolation rearing to investigate the neurobiology of stress-related disorders and evaluate therapeutic targets.
社会隔离是导致精神疾病的一个既定风险因素,随着SARS-CoV-2的传播,这一问题日益受到关注。我们利用 RNA 测序(RNA-Seq)技术对隔离饲养大鼠前额叶皮层(PFC)的转录组变化进行了无偏见的评估。为了深入了解这种操作对研究人类疾病的意义,我们将差异表达基因(DEGs)和富集的生物功能与精神疾病和神经发育疾病患者的死后额叶皮层组织数据集进行了比较。16只雄性Sprague-Dawley大鼠从出生后第22-24天断奶到收集额叶皮质组织进行RNA-Seq分析(第64-66天)期间,每4只一组或单独饲养。我们在分离物中共鉴定出 183 个 DEGs,其中 128 个与压力相关精神疾病和/或具有社交缺陷的神经发育状况患者的 PFC 组织中的 DEGs 一致。71个编码蛋白被基因-药物相互作用数据库归类为可药用蛋白。有趣的是,其中三个上调 DEGs(Hrh3、Snca 和 Sod1)的产物有拮抗剂或抑制剂,六个下调 DEGs(Chrm4、Klf2、Lrrk2、Nr4a1、Nr4a3 和 Prkca)的产物有激动剂或激活剂。其中一些已经进行了临床前和临床评估,其余的可能需要进行研究。通过定量反转录聚合酶链反应 (qRT-PCR),Hrh3、Sod1、Chrm4、Lrrk2、Nr4a1 和 Prkca 的变化在十六只雄性 Sprague-Dawley 大鼠的独立队列中得到了复制。我们的研究结果支持继续使用断奶后隔离饲养来研究应激相关疾病的神经生物学并评估治疗目标。
{"title":"Transcriptomic analysis of rat prefrontal cortex following chronic stress induced by social isolation – Relevance to psychiatric and neurodevelopmental illness, and implications for treatment","authors":"Jen-Yin Goh ,&nbsp;Patricia Rueda ,&nbsp;Joy Taylor ,&nbsp;Alex Rathbone ,&nbsp;Daniel Scott ,&nbsp;Christopher J. Langmead ,&nbsp;Kevin C.F. Fone ,&nbsp;Gregory D. Stewart ,&nbsp;Madeleine V. King","doi":"10.1016/j.ynstr.2024.100679","DOIUrl":"10.1016/j.ynstr.2024.100679","url":null,"abstract":"<div><div>Social isolation is an established risk factor for psychiatric illness, and became increasingly topical with the spread of SARS-CoV-2. We used RNA sequencing (RNA-Seq) to enable unbiased assessment of transcriptomic changes within the prefrontal cortex (PFC) of isolation-reared rats. To provide insight into the relevance of this manipulation for studying human illness, we compared differentially expressed genes (DEGs) and enriched biological functions against datasets involving post-mortem frontal cortical tissue from patients with psychiatric and neurodevelopmental illnesses. Sixteen male Sprague-Dawley rats were reared in groups of four or individually from weaning on postnatal day (PND) 22–24 until PFC tissue collection for RNA-Seq (PND64-66). We identified a total of 183 DEGs in isolates, of which 128 mirrored those in PFC tissue from patients with stress-related mental illnesses and/or neurodevelopmental conditions featuring social deficits. Seventy-one encode proteins classed as druggable by the gene-drug interaction database. Interestingly there are antagonists or inhibitors for the products of three of these up-regulated DEGs (<em>Hrh3</em>, <em>Snca</em> and <em>Sod1</em>) and agonists or activators for products of six of these down-regulated DEGs (<em>Chrm4</em>, <em>Klf2</em>, <em>Lrrk2</em>, <em>Nr4a1</em>, <em>Nr4a3</em> and <em>Prkca</em>). Some have already undergone pre-clinical and clinical evaluation, and studies with the remainder may be warranted. Changes to <em>Hrh3</em>, <em>Sod1</em>, <em>Chrm4</em>, <em>Lrrk2</em>, <em>Nr4a1</em> and <em>Prkca</em> were replicated in an independent cohort of sixteen male Sprague-Dawley rats via quantitative reverse transcription polymerase chain reaction (qRT-PCR). Our findings support the continued use of post-weaning isolation rearing to investigate the neurobiology of stress-related disorders and evaluate therapeutic targets.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100679"},"PeriodicalIF":4.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cholecystokinin-expressing interneurons mediated inhibitory transmission and plasticity in basolateral amygdala modulate stress-induced anxiety-like behaviors in mice 胆囊收缩素表达的中间神经元介导的杏仁核基底外侧抑制性传导和可塑性调节小鼠应激诱发的焦虑样行为
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-10-16 DOI: 10.1016/j.ynstr.2024.100680
Wei Fang , Xi Chen , Jufang He
The basolateral amygdala (BLA) hyperactivity has been implicated in the pathophysiology of anxiety disorders. We recently found that enhancing inhibitory transmission in BLA by chemo-genetic activation of local interneurons (INs) can reduce stress-induced anxiety-like behaviors in mice. Cholecystokinin interneurons (CCK-INs) are a major part of INs in BLA. It remains unknown whether CCK-INs modulated inhibition in BLA can mediate anxiety. In the present study, we found that BLA CCK-INs project extensively to most local excitatory neurons. Activating these CCK-INs using chemo-genetics and optogenetics can both effectively suppress electrical-induced neuronal activity within the BLA. Additionally, we observed that direct and sustained activation of CCK-INs within the BLA via chemo-genetics can mitigate stress-induced anxiety-like behaviors in mice and reduce stress-induced hyperactivity within the BLA itself. Furthermore, augmenting inhibitory plasticity within the BLA through a brief, 10-min high-frequency laser stimulation (HFLS) of CCK-INs also reduce stress-induced anxiety-like behaviors in mice. Collectively, these findings underscore the pivotal role of BLA CCK-IN-mediated inhibitory transmission and plasticity in modulating anxiety.
杏仁基底外侧(BLA)的过度活跃与焦虑症的病理生理学有关。我们最近发现,通过化学基因激活局部中间神经元(INs)来增强杏仁基底外侧的抑制性传导,可以减少小鼠由压力诱发的焦虑样行为。胆囊收缩素中间神经元(CCK-INs)是BLA中INs的主要组成部分。CCK-INs调节BLA中的抑制作用是否能介导焦虑仍是一个未知数。在本研究中,我们发现 BLA CCK-INs 广泛投射到大多数局部兴奋性神经元。利用化学遗传学和光遗传学激活这些 CCK-INs 都能有效抑制 BLA 内电诱导的神经元活动。此外,我们还观察到,通过化学遗传学直接、持续地激活 BLA 内的 CCK-INs 可以减轻应激诱导的小鼠焦虑样行为,并降低应激诱导的 BLA 自身的过度活跃性。此外,通过对CCK-INs进行10分钟的短暂高频激光刺激(HFLS)来增强BLA内的抑制可塑性,也能减少小鼠应激诱发的焦虑样行为。总之,这些发现强调了BLA CCK-IN介导的抑制性传递和可塑性在调节焦虑中的关键作用。
{"title":"Cholecystokinin-expressing interneurons mediated inhibitory transmission and plasticity in basolateral amygdala modulate stress-induced anxiety-like behaviors in mice","authors":"Wei Fang ,&nbsp;Xi Chen ,&nbsp;Jufang He","doi":"10.1016/j.ynstr.2024.100680","DOIUrl":"10.1016/j.ynstr.2024.100680","url":null,"abstract":"<div><div>The basolateral amygdala (BLA) hyperactivity has been implicated in the pathophysiology of anxiety disorders. We recently found that enhancing inhibitory transmission in BLA by chemo-genetic activation of local interneurons (INs) can reduce stress-induced anxiety-like behaviors in mice. Cholecystokinin interneurons (CCK-INs) are a major part of INs in BLA. It remains unknown whether CCK-INs modulated inhibition in BLA can mediate anxiety. In the present study, we found that BLA CCK-INs project extensively to most local excitatory neurons. Activating these CCK-INs using chemo-genetics and optogenetics can both effectively suppress electrical-induced neuronal activity within the BLA. Additionally, we observed that direct and sustained activation of CCK-INs within the BLA via chemo-genetics can mitigate stress-induced anxiety-like behaviors in mice and reduce stress-induced hyperactivity within the BLA itself. Furthermore, augmenting inhibitory plasticity within the BLA through a brief, 10-min high-frequency laser stimulation (HFLS) of CCK-INs also reduce stress-induced anxiety-like behaviors in mice. Collectively, these findings underscore the pivotal role of BLA CCK-IN-mediated inhibitory transmission and plasticity in modulating anxiety.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100680"},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Emotional comorbidities in epilepsy result from seizure-induced corticosterone activity 癫痫患者的情感并发症源于癫痫发作引起的皮质酮活动
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-10-11 DOI: 10.1016/j.ynstr.2024.100678
Renaud C. Gom , Antis G. George , Sydney A. Harris , Pasindu Wickramarachchi , Dhyey Bhatt , Shaona Acharjee , Quentin J. Pittman , Matthew N. Hill , Roberto Colangeli , G. Campbell Teskey
People with epilepsy often have psychiatric comorbidities that can significantly impair their quality of life. We previously reported that repeated seizure activity persistently alters endocannabinoid (eCB) signaling in the amygdala which accounts for comorbid emotional dysregulation in rats, however, the mechanism by which these alterations in eCB signaling within the epileptic brain occur is unclear. Endocannabinoid signaling is influenced by corticosterone (CORT) to modulate cognitive and emotional processes and a hyperactive hypothalamic-pituitary-adrenal (HPA) axis occurs in both people with epilepsy and nonhuman animal models of epilepsy.
We employed selective pharmacological tools and a variety of approaches including whole-cell patch-clamp electrophysiology, behavioural paradigms and biochemical assays in amygdala kindled adult male Long-Evans rats. We aimed to determine whether seizures induce hypersecretion of CORT and the role this plays in eCB system dysregulation, impaired fear memory, and anxiety-like behaviours associated with seizure activity.
Plasma CORT levels were significantly and consistently elevated following seizures over the course of kindling. Pre-seizure administration with the CORT synthesis inhibitor metyrapone prevented this seizure-induced CORT increase, prevented amygdala anandamide downregulation, and synaptic alteration induced by seizure activity. Moreover, treatment with metyrapone or combined glucocorticoid receptor (GR)/mineralocorticoid receptor (MR) antagonists prior to each elicited seizure were equally effective in preventing chronically altered anxiety-like behaviour and fear memory responses.
Inhibiting seizure-induced corticosterone synthesis, or directly blocking the effects of CORT at GR/MR prevents deleterious changes in emotional processing and could be a treatment option for emotional comorbidities in epilepsy.
癫痫患者往往合并有精神疾病,这会严重影响他们的生活质量。我们以前曾报道,反复发作的癫痫活动会持续改变杏仁核中的内源性大麻素(eCB)信号传导,从而导致大鼠合并情绪失调,然而,癫痫患者大脑中 eCB 信号传导发生改变的机制尚不清楚。内源性大麻素信号传导受皮质酮(CORT)的影响,可调节认知和情绪过程,癫痫患者和非人类癫痫动物模型都会出现下丘脑-垂体-肾上腺(HPA)轴亢进。我们的目的是确定癫痫发作是否会诱发 CORT 分泌过多,以及这在 eCB 系统失调、恐惧记忆受损和与癫痫发作活动相关的焦虑样行为中所起的作用。癫痫发作前服用CORT合成抑制剂甲萘醌可防止癫痫发作引起的CORT升高,防止杏仁核anandamide下调和癫痫活动引起的突触改变。此外,在每次诱发癫痫发作前使用甲泼尼龙或糖皮质激素受体(GR)/矿质皮质激素受体(MR)联合拮抗剂治疗,对防止长期改变的焦虑样行为和恐惧记忆反应同样有效。
{"title":"Emotional comorbidities in epilepsy result from seizure-induced corticosterone activity","authors":"Renaud C. Gom ,&nbsp;Antis G. George ,&nbsp;Sydney A. Harris ,&nbsp;Pasindu Wickramarachchi ,&nbsp;Dhyey Bhatt ,&nbsp;Shaona Acharjee ,&nbsp;Quentin J. Pittman ,&nbsp;Matthew N. Hill ,&nbsp;Roberto Colangeli ,&nbsp;G. Campbell Teskey","doi":"10.1016/j.ynstr.2024.100678","DOIUrl":"10.1016/j.ynstr.2024.100678","url":null,"abstract":"<div><div>People with epilepsy often have psychiatric comorbidities that can significantly impair their quality of life. We previously reported that repeated seizure activity persistently alters endocannabinoid (eCB) signaling in the amygdala which accounts for comorbid emotional dysregulation in rats, however, the mechanism by which these alterations in eCB signaling within the epileptic brain occur is unclear. Endocannabinoid signaling is influenced by corticosterone (CORT) to modulate cognitive and emotional processes and a hyperactive hypothalamic-pituitary-adrenal (HPA) axis occurs in both people with epilepsy and nonhuman animal models of epilepsy.</div><div>We employed selective pharmacological tools and a variety of approaches including whole-cell patch-clamp electrophysiology, behavioural paradigms and biochemical assays in amygdala kindled adult male Long-Evans rats. We aimed to determine whether seizures induce hypersecretion of CORT and the role this plays in eCB system dysregulation, impaired fear memory, and anxiety-like behaviours associated with seizure activity.</div><div>Plasma CORT levels were significantly and consistently elevated following seizures over the course of kindling. Pre-seizure administration with the CORT synthesis inhibitor metyrapone prevented this seizure-induced CORT increase, prevented amygdala anandamide downregulation, and synaptic alteration induced by seizure activity. Moreover, treatment with metyrapone or combined glucocorticoid receptor (GR)/mineralocorticoid receptor (MR) antagonists prior to each elicited seizure were equally effective in preventing chronically altered anxiety-like behaviour and fear memory responses.</div><div>Inhibiting seizure-induced corticosterone synthesis, or directly blocking the effects of CORT at GR/MR prevents deleterious changes in emotional processing and could be a treatment option for emotional comorbidities in epilepsy.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100678"},"PeriodicalIF":4.3,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic changes of media prefrontal cortex astrocytic activity in response to negative stimuli in male mice 雄性小鼠中前额叶皮层星形胶质细胞活动对负面刺激的动态变化
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-10-04 DOI: 10.1016/j.ynstr.2024.100676
Ai-Mei Wu , Jing-Ya Zhang , Wei-Zhong Lun , Zhi Geng , Ye Yang , Jun-Cang Wu , Gui-Hai Chen
Astrocytes play significant roles in regulating the central stress response. Chronic stress impairs the structure and function of astrocytes in many brain regions such as media prefrontal cortex (mPFC) in multiple neuropsychiatric conditions, but the astrocytic dynamics on the timescale of behavior remains unclear. Here, we recorded mPFC astrocytic activity in freely behaving mice and found that astrocytes are activated immediately by different aversive stimuli. Astrocyte specific GCaMP6s calcium indicator were virally expressed in mPFC astrocytes and fiber photometry experiments revealed that astrocytes are activated by tail-restraint (TRT), foot shock (FS), open arm exploration, stressor of height, predator odor and social defeat (SD) stress. ΔF/F analyses demonstrated that an unpredictable stimulus such as elevated platform stress (EPS) at the initial encounter induced the most intense and rapid changes in astrocytic calcium activity, while a predictable 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) stimulus resulted in the weakest response with a longer peak latency. In TRT, FS or SD test, a somatic stimulus led to higher average calcium activity level and faster average peak latency in repeated trails. Similar to TMT stimulus, astrocytic calcium activity in elevated plus maze (EPM) test exhibited a smaller average change in amplitude and the longest peak latency during open arm exploration. Moreover, astrocytic calcium activity exhibited different changes across behavioral states in SD tests. Our findings show that mPFC astrocytes exhibit distinct patterns of calcium activity in response to various negative stimuli, indicating that the dynamic activity of astrocytes may reflect the stress-related behavioral state under different stimulus conditions.
星形胶质细胞在调节中枢应激反应方面发挥着重要作用。在多种神经精神疾病中,慢性应激会损害中枢前额叶皮层(mPFC)等许多脑区的星形胶质细胞的结构和功能,但行为时间尺度上的星形胶质细胞动态仍不清楚。在这里,我们记录了自由行为小鼠的 mPFC 星形胶质细胞活动,发现星形胶质细胞会在不同的厌恶刺激下立即被激活。在 mPFC 星形胶质细胞中病毒表达了星形胶质细胞特异性 GCaMP6s 钙指示剂,纤维光度测定实验显示星形胶质细胞在受到尾约束(TRT)、足部冲击(FS)、张开手臂探索、身高应激源、捕食者气味和社交失败(SD)应激时被激活。ΔF/F分析表明,初次接触高台应激(EPS)等不可预测的刺激会诱导星形胶质细胞钙活性发生最强烈和快速的变化,而可预测的2,5-二氢-2,4,5-三甲基噻唑啉(TMT)刺激会导致最微弱的反应和更长的峰值潜伏期。在TRT、FS或SD测试中,躯体刺激会导致更高的平均钙活性水平和更快的重复追踪平均峰值潜伏期。与TMT刺激类似,在高架加迷宫(EPM)测试中,星形胶质细胞钙活动在开臂探索过程中表现出较小的平均振幅变化和最长的峰值潜伏期。此外,在 SD 测试中,星形胶质细胞钙活动在不同行为状态下表现出不同的变化。我们的研究结果表明,mPFC星形胶质细胞在对各种负性刺激做出反应时表现出不同的钙活动模式,这表明星形胶质细胞的动态活动可能反映了在不同刺激条件下与应激相关的行为状态。
{"title":"Dynamic changes of media prefrontal cortex astrocytic activity in response to negative stimuli in male mice","authors":"Ai-Mei Wu ,&nbsp;Jing-Ya Zhang ,&nbsp;Wei-Zhong Lun ,&nbsp;Zhi Geng ,&nbsp;Ye Yang ,&nbsp;Jun-Cang Wu ,&nbsp;Gui-Hai Chen","doi":"10.1016/j.ynstr.2024.100676","DOIUrl":"10.1016/j.ynstr.2024.100676","url":null,"abstract":"<div><div>Astrocytes play significant roles in regulating the central stress response. Chronic stress impairs the structure and function of astrocytes in many brain regions such as media prefrontal cortex (mPFC) in multiple neuropsychiatric conditions, but the astrocytic dynamics on the timescale of behavior remains unclear. Here, we recorded mPFC astrocytic activity in freely behaving mice and found that astrocytes are activated immediately by different aversive stimuli. Astrocyte specific GCaMP6s calcium indicator were virally expressed in mPFC astrocytes and fiber photometry experiments revealed that astrocytes are activated by tail-restraint (TRT), foot shock (FS), open arm exploration, stressor of height, predator odor and social defeat (SD) stress. ΔF/F analyses demonstrated that an unpredictable stimulus such as elevated platform stress (EPS) at the initial encounter induced the most intense and rapid changes in astrocytic calcium activity, while a predictable 2,5-dihydro-2,4,5-trimethylthiazoline (TMT) stimulus resulted in the weakest response with a longer peak latency. In TRT, FS or SD test, a somatic stimulus led to higher average calcium activity level and faster average peak latency in repeated trails. Similar to TMT stimulus, astrocytic calcium activity in elevated plus maze (EPM) test exhibited a smaller average change in amplitude and the longest peak latency during open arm exploration. Moreover, astrocytic calcium activity exhibited different changes across behavioral states in SD tests. Our findings show that mPFC astrocytes exhibit distinct patterns of calcium activity in response to various negative stimuli, indicating that the dynamic activity of astrocytes may reflect the stress-related behavioral state under different stimulus conditions.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100676"},"PeriodicalIF":4.3,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behavioral and neural correlates of diverse conditioned fear responses in male and female rats 雌雄大鼠各种条件性恐惧反应的行为和神经相关性
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-09-21 DOI: 10.1016/j.ynstr.2024.100675
Julia R. Mitchell , Lindsay Vincelette , Samantha Tuberman , Vivika Sheppard , Emmett Bergeron , Roberto Calitri , Rose Clark , Caitlyn Cody , Akshara Kannan , Jack Keith , Abigail Parakoyi , MaryClare Pikus , Victoria Vance , Leena Ziane , Heather Brenhouse , Mikaela A. Laine , Rebecca M. Shansky
Pavlovian fear conditioning is a widely used tool that models associative learning in rodents. For decades the field has used predominantly male rodents and focused on a sole conditioned fear response: freezing. However, recent work from our lab and others has identified darting as a female-biased conditioned response, characterized by an escape-like movement across a fear conditioning chamber. It is also accompanied by a behavioral phenotype: Darters reliably show decreased freezing compared to Non-darters and males and reach higher velocities in response to the foot shock (“shock response”). However, the relationship between shock response and conditioned darting is not known. This study investigated if this link is due to differences in general processing of aversive stimuli between Darters, Non-darters and males. Across a variety of modalities, including corticosterone measures, the acoustic startle test, and sensitivity to thermal pain, Darters were found not to be more reactive or sensitive to aversive stimuli, and, in some cases, they appear less reactive to Non-darters and males. Analyses of cFos activity in regions involved in pain and fear processing following fear conditioning identified discrete patterns of expression among Darters, Non-darters, and males exposed to low and high intensity foot shocks. The results from these studies further our understanding of the differences between Darters, Non-darters and males and highlight the importance of studying individual differences in fear conditioning as indicators of fear state.
巴甫洛夫恐惧条件反射是一种广泛使用的啮齿动物联想学习模型工具。几十年来,该领域一直主要使用雄性啮齿动物,并专注于唯一的条件性恐惧反应:冻结。然而,我们实验室和其他实验室最近的研究发现,飞奔是一种偏向雌性的条件反应,其特征是在恐惧条件反射室中进行类似逃跑的运动。它还伴随着一种行为表型:与非镖鱼和雄性镖鱼相比,镖鱼能可靠地表现出较低的凝滞性,并在脚部冲击下达到较高的速度("冲击反应")。然而,冲击反应与条件飞镖之间的关系尚不清楚。本研究调查了这种联系是否是由于短吻鳄、非短吻鳄和雄性短吻鳄对厌恶刺激的一般处理过程存在差异造成的。在皮质酮测量、声学惊吓试验和对热痛的敏感性等多种模式中,我们发现短吻鳄对厌恶刺激的反应性或敏感性并不更高,在某些情况下,它们的反应性似乎低于非短吻鳄和雄性短吻鳄。在恐惧条件反射后,对涉及疼痛和恐惧处理区域的 cFos 活动进行分析,发现在暴露于低强度和高强度足部冲击的短吻鳄、非短吻鳄和雄性短吻鳄中,cFos 的表达模式各不相同。这些研究结果进一步加深了我们对短吻鳄、非短吻鳄和雄性短吻鳄之间差异的理解,并强调了研究作为恐惧状态指标的恐惧条件反射中个体差异的重要性。
{"title":"Behavioral and neural correlates of diverse conditioned fear responses in male and female rats","authors":"Julia R. Mitchell ,&nbsp;Lindsay Vincelette ,&nbsp;Samantha Tuberman ,&nbsp;Vivika Sheppard ,&nbsp;Emmett Bergeron ,&nbsp;Roberto Calitri ,&nbsp;Rose Clark ,&nbsp;Caitlyn Cody ,&nbsp;Akshara Kannan ,&nbsp;Jack Keith ,&nbsp;Abigail Parakoyi ,&nbsp;MaryClare Pikus ,&nbsp;Victoria Vance ,&nbsp;Leena Ziane ,&nbsp;Heather Brenhouse ,&nbsp;Mikaela A. Laine ,&nbsp;Rebecca M. Shansky","doi":"10.1016/j.ynstr.2024.100675","DOIUrl":"10.1016/j.ynstr.2024.100675","url":null,"abstract":"<div><div>Pavlovian fear conditioning is a widely used tool that models associative learning in rodents. For decades the field has used predominantly male rodents and focused on a sole conditioned fear response: freezing. However, recent work from our lab and others has identified darting as a female-biased conditioned response, characterized by an escape-like movement across a fear conditioning chamber. It is also accompanied by a behavioral phenotype: Darters reliably show decreased freezing compared to Non-darters and males and reach higher velocities in response to the foot shock (“shock response”). However, the relationship between shock response and conditioned darting is not known. This study investigated if this link is due to differences in general processing of aversive stimuli between Darters, Non-darters and males. Across a variety of modalities, including corticosterone measures, the acoustic startle test, and sensitivity to thermal pain, Darters were found not to be more reactive or sensitive to aversive stimuli, and, in some cases, they appear less reactive to Non-darters and males. Analyses of cFos activity in regions involved in pain and fear processing following fear conditioning identified discrete patterns of expression among Darters, Non-darters, and males exposed to low and high intensity foot shocks. The results from these studies further our understanding of the differences between Darters, Non-darters and males and highlight the importance of studying individual differences in fear conditioning as indicators of fear state.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100675"},"PeriodicalIF":4.3,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352289524000717/pdfft?md5=4b62059f360b89745fab62771589e0b0&pid=1-s2.0-S2352289524000717-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Early life stress induced sex-specific changes in behavior is paralleled by altered locus coeruleus physiology in BALB/cJ mice 在 BALB/cJ 小鼠中,早期生活压力引起的行为性别特异性变化与局部小脑生理机能的改变是同步的
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-09-18 DOI: 10.1016/j.ynstr.2024.100674
Savannah Brannan, Lauren Garbe, Ben D. Richardson
Adverse childhood experiences have been associated with many neurodevelopmental and affective disorders including attention deficit hyperactivity disorder and generalized anxiety disorder, with more exposures increasing negative risk. Sex and genetic background are biological variables involved in adverse psychiatric outcomes due to early life trauma. Females in general have an increased prevalence of stress-related psychopathologies beginning after adolescence, indicative of adolescence being a female-specific sensitive period. To understand the underlying neuronal mechanisms potentially responsible for this relationship between genetic background, sex, stress/trauma, and cognitive/affective behaviors, we assessed behavioral and neuronal changes in a novel animal model of early life stress exposure. Male and female BALB/cJ mice that express elevated basal anxiety-like behaviors and differences in monoamine signaling-associated genes, were exposed to an early life variable stress protocol that combined deprivation in early life with unpredictability in adolescence. Stress exposure produced hyperlocomotion and attention deficits (5-choice serial reaction time task) in male and female mice along with female-specific increased anxiety-like behavior. These behavioral changes were paralleled by reduced excitability of locus coeruleus (LC) neurons, due to resting membrane potential hyperpolarization in males and a female-specific increase in action potential delay time. These data describe a novel interaction between sex, genetic background, and early life stress that results in behavioral changes in clinically relevant domains and potential underlying mechanistic lasting changes in physiological properties of neurons in the LC.
童年时期的不良经历与许多神经发育障碍和情感障碍(包括注意力缺陷多动障碍和广泛性焦虑症)有关,接触越多,负面风险越大。性别和遗传背景是早期生活创伤导致不良精神结果的生物变量。一般来说,女性在青春期后开始出现与压力相关的精神病症的几率增加,这表明青春期是女性特有的敏感期。为了了解可能导致遗传背景、性别、压力/创伤和认知/情感行为之间这种关系的潜在神经元机制,我们在一种新型的早期生活压力暴露动物模型中评估了行为和神经元的变化。雄性和雌性BALB/cJ小鼠均表现出升高的基础焦虑样行为和单胺类信号转导相关基因的差异。应激暴露会导致雄性和雌性小鼠运动过度和注意力缺陷(5选1连续反应时间任务),以及雌性特有的焦虑样行为增加。雄性小鼠静息膜电位超极化和雌性小鼠特异性动作电位延迟时间增加导致的局部小脑(LC)神经元兴奋性降低与这些行为变化同时发生。这些数据描述了性别、遗传背景和早期生活压力之间的一种新的相互作用,这种相互作用导致了临床相关领域的行为变化以及LC神经元生理特性的潜在机制性持久变化。
{"title":"Early life stress induced sex-specific changes in behavior is paralleled by altered locus coeruleus physiology in BALB/cJ mice","authors":"Savannah Brannan,&nbsp;Lauren Garbe,&nbsp;Ben D. Richardson","doi":"10.1016/j.ynstr.2024.100674","DOIUrl":"10.1016/j.ynstr.2024.100674","url":null,"abstract":"<div><div>Adverse childhood experiences have been associated with many neurodevelopmental and affective disorders including attention deficit hyperactivity disorder and generalized anxiety disorder, with more exposures increasing negative risk. Sex and genetic background are biological variables involved in adverse psychiatric outcomes due to early life trauma. Females in general have an increased prevalence of stress-related psychopathologies beginning after adolescence, indicative of adolescence being a female-specific sensitive period. To understand the underlying neuronal mechanisms potentially responsible for this relationship between genetic background, sex, stress/trauma, and cognitive/affective behaviors, we assessed behavioral and neuronal changes in a novel animal model of early life stress exposure. Male and female BALB/cJ mice that express elevated basal anxiety-like behaviors and differences in monoamine signaling-associated genes, were exposed to an early life variable stress protocol that combined deprivation in early life with unpredictability in adolescence. Stress exposure produced hyperlocomotion and attention deficits (5-choice serial reaction time task) in male and female mice along with female-specific increased anxiety-like behavior. These behavioral changes were paralleled by reduced excitability of locus coeruleus (LC) neurons, due to resting membrane potential hyperpolarization in males and a female-specific increase in action potential delay time. These data describe a novel interaction between sex, genetic background, and early life stress that results in behavioral changes in clinically relevant domains and potential underlying mechanistic lasting changes in physiological properties of neurons in the LC.</div></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100674"},"PeriodicalIF":4.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352289524000705/pdfft?md5=619d3e35ab97587f0de791597ebd7efb&pid=1-s2.0-S2352289524000705-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of chronic stress on cognitive function – From neurobiology to intervention 慢性压力对认知功能的影响--从神经生物学到干预措施
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-09-02 DOI: 10.1016/j.ynstr.2024.100670
Milena Girotti , Sarah E. Bulin, Flavia R. Carreno

Exposure to chronic stress contributes considerably to the development of cognitive impairments in psychiatric disorders such as depression, generalized anxiety disorder (GAD), obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and addictive behavior. Unfortunately, unlike mood-related symptoms, cognitive impairments are not effectively treated by available therapies, a situation in part resulting from a still incomplete knowledge of the neurobiological substrates that underly cognitive domains and the difficulty in generating interventions that are both efficacious and safe.

In this review, we will present an overview of the cognitive domains affected by stress with a specific focus on cognitive flexibility, behavioral inhibition, and working memory. We will then consider the effects of stress on neuronal correlates of cognitive function and the factors which may modulate the interaction of stress and cognition. Finally, we will discuss intervention strategies for treatment of stress-related disorders and gaps in knowledge with emerging new treatments under development.

Understanding how cognitive impairment occurs during exposure to chronic stress is crucial to make progress towards the development of new and effective therapeutic approaches.

在抑郁症、广泛性焦虑症(GAD)、强迫症(OCD)、创伤后应激障碍(PTSD)和成瘾行为等精神疾病中,长期暴露在压力下会在很大程度上导致认知障碍的发展。遗憾的是,与情绪相关症状不同,认知障碍并不能通过现有疗法得到有效治疗,造成这种情况的部分原因是人们对认知领域的神经生物学基质的了解仍不全面,而且很难产生既有效又安全的干预措施。在这篇综述中,我们将概述受压力影响的认知领域,重点关注认知灵活性、行为抑制和工作记忆。然后,我们将探讨压力对认知功能神经元相关性的影响,以及可能调节压力与认知相互作用的因素。最后,我们将讨论治疗压力相关障碍的干预策略,以及正在开发的新疗法的知识差距。了解认知障碍是如何在长期压力下发生的,对于开发新的有效治疗方法至关重要。
{"title":"Effects of chronic stress on cognitive function – From neurobiology to intervention","authors":"Milena Girotti ,&nbsp;Sarah E. Bulin,&nbsp;Flavia R. Carreno","doi":"10.1016/j.ynstr.2024.100670","DOIUrl":"10.1016/j.ynstr.2024.100670","url":null,"abstract":"<div><p>Exposure to chronic stress contributes considerably to the development of cognitive impairments in psychiatric disorders such as depression, generalized anxiety disorder (GAD), obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and addictive behavior. Unfortunately, unlike mood-related symptoms, cognitive impairments are not effectively treated by available therapies, a situation in part resulting from a still incomplete knowledge of the neurobiological substrates that underly cognitive domains and the difficulty in generating interventions that are both efficacious and safe.</p><p>In this review, we will present an overview of the cognitive domains affected by stress with a specific focus on cognitive flexibility, behavioral inhibition, and working memory. We will then consider the effects of stress on neuronal correlates of cognitive function and the factors which may modulate the interaction of stress and cognition. Finally, we will discuss intervention strategies for treatment of stress-related disorders and gaps in knowledge with emerging new treatments under development.</p><p>Understanding how cognitive impairment occurs during exposure to chronic stress is crucial to make progress towards the development of new and effective therapeutic approaches.</p></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100670"},"PeriodicalIF":4.3,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352289524000663/pdfft?md5=74817e2bd3e26a3097145e164803e3b3&pid=1-s2.0-S2352289524000663-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enduring memory consequences of early-life stress / adversity: Structural, synaptic, molecular and epigenetic mechanisms 早期生活压力/逆境的持久记忆后果:结构、突触、分子和表观遗传机制
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-08-30 DOI: 10.1016/j.ynstr.2024.100669
Tallie Z. Baram , Matthew T. Birnie

Adverse early life experiences are strongly associated with reduced cognitive function throughout life. The link is strong in many human studies, but these do not enable assigning causality, and the limited access to the live human brain can impede establishing the mechanisms by which early-life adversity (ELA) may induce cognitive problems. In experimental models, artificially imposed chronic ELA/stress results in deficits in hippocampus dependent memory as well as increased vulnerability to the deleterious effects of adult stress on memory. This causal relation of ELA and life-long memory impairments provides a framework to probe the mechanisms by which ELA may lead to human cognitive problems. Here we focus on the consequences of a one-week exposure to adversity during early postnatal life in the rodent, the spectrum of the ensuing memory deficits, and the mechanisms responsible. We highlight molecular, cellular and circuit mechanisms using convergent trans-disciplinary approaches aiming to enable translation of the discoveries in experimental models to the clinic.

早年的不利生活经历与终生认知功能下降密切相关。在许多人体研究中,这种联系都非常密切,但这些研究并不能确定因果关系,而且由于接触活体人脑的机会有限,因此无法确定早期生活逆境(ELA)可能诱发认知问题的机制。在实验模型中,人为施加的慢性 ELA/压力会导致海马依赖性记忆缺陷,以及更容易受到成人压力对记忆的有害影响。ELA与终生记忆损伤之间的这种因果关系为探究ELA可能导致人类认知问题的机制提供了一个框架。在此,我们将重点研究啮齿类动物在出生后早期一周的逆境暴露所造成的后果、随之而来的记忆缺陷的范围以及造成这些后果的机制。我们强调分子、细胞和回路机制,采用融合的跨学科方法,旨在将实验模型中的发现转化为临床实践。
{"title":"Enduring memory consequences of early-life stress / adversity: Structural, synaptic, molecular and epigenetic mechanisms","authors":"Tallie Z. Baram ,&nbsp;Matthew T. Birnie","doi":"10.1016/j.ynstr.2024.100669","DOIUrl":"10.1016/j.ynstr.2024.100669","url":null,"abstract":"<div><p>Adverse early life experiences are strongly associated with reduced cognitive function throughout life. The link is strong in many human studies, but these do not enable assigning causality, and the limited access to the live human brain can impede establishing the mechanisms by which early-life adversity (ELA) may induce cognitive problems. In experimental models, artificially imposed chronic ELA/stress results in deficits in hippocampus dependent memory as well as increased vulnerability to the deleterious effects of adult stress on memory. This causal relation of ELA and life-long memory impairments provides a framework to probe the mechanisms by which ELA may lead to human cognitive problems. Here we focus on the consequences of a one-week exposure to adversity during early postnatal life in the rodent, the spectrum of the ensuing memory deficits, and the mechanisms responsible. We highlight molecular, cellular and circuit mechanisms using convergent trans-disciplinary approaches aiming to enable translation of the discoveries in experimental models to the clinic.</p></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"33 ","pages":"Article 100669"},"PeriodicalIF":4.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352289524000651/pdfft?md5=0dae508822ab66e17bb389e4c4ca6c65&pid=1-s2.0-S2352289524000651-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distinct populations of lateral preoptic nucleus neurons jointly contribute to depressive-like behaviors through divergent projections in male mice 雄性小鼠外侧视前核神经元的不同群体通过不同的投射共同促成了类似抑郁的行为
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2024-08-13 DOI: 10.1016/j.ynstr.2024.100667
Zhiping Cao , Wing-Ho Yung , Ya Ke

The lateral preoptic area (LPO) is a component of the hypothalamus involved in various physiological functions including sleep-wakefulness transition, thermoregulation, and water-salt balance. In this study, we discovered that distinct LPO excitatory neurons project separately to the aversive processing center lateral habenula (LHb) and the reward processing hub ventral tegmental area (VTA). Following chronic restraint stress (CRS), the LHb-projecting and VTA-projecting LPO neurons exhibited increased and decreased neuronal activities, respectively. Optogenetic activation of LHb-projecting LPO excitatory neurons and LPO excitatory neuronal terminals within LHb evoked aversion and avoidance behaviors, while activation of VTA-projecting LPO excitatory neurons and LPO excitatory neuronal terminals within VTA produced preference and exploratory behaviors in mice. Furthermore, either optogenetic inhibition of LHb-projecting LPO excitatory neurons or activation of VTA-projecting LPO excitatory neurons during CRS effectively prevented the development of depressive-like behaviors. Our study unveils, for the first-time, divergent pathways originating from LPO that regulate opposite affective states in mice and implicates that an imbalance of their activities could lead to depressive-like behaviors. These circuitries represent promising therapeutic targets to relieve emotional dysfunctions in neuropsychiatric disorders.

外侧视前区(LPO)是下丘脑的一个组成部分,参与睡眠-觉醒转换、体温调节和水盐平衡等多种生理功能。在这项研究中,我们发现LPO的不同兴奋神经元分别投射到厌恶处理中枢外侧哈文脑(LHb)和奖赏处理中枢腹侧被盖区(VTA)。慢性束缚应激(CRS)后,LHb投射和VTA投射的LPO神经元分别表现出神经元活动的增加和减少。光遗传激活LHb投射的LPO兴奋神经元和LHb内的LPO兴奋神经元末梢会诱发小鼠的厌恶和回避行为,而激活VTA投射的LPO兴奋神经元和VTA内的LPO兴奋神经元末梢则会使小鼠产生偏好和探索行为。此外,在CRS期间,无论是光遗传学抑制LHb投射的LPO兴奋神经元,还是激活VTA投射的LPO兴奋神经元,都能有效防止抑郁样行为的发生。我们的研究首次揭示了源自LPO的不同通路,这些通路调控小鼠相反的情感状态,并暗示它们的活动失衡可能导致抑郁样行为。这些回路是缓解神经精神疾病中情感功能障碍的治疗靶点。
{"title":"Distinct populations of lateral preoptic nucleus neurons jointly contribute to depressive-like behaviors through divergent projections in male mice","authors":"Zhiping Cao ,&nbsp;Wing-Ho Yung ,&nbsp;Ya Ke","doi":"10.1016/j.ynstr.2024.100667","DOIUrl":"10.1016/j.ynstr.2024.100667","url":null,"abstract":"<div><p>The lateral preoptic area (LPO) is a component of the hypothalamus involved in various physiological functions including sleep-wakefulness transition, thermoregulation, and water-salt balance. In this study, we discovered that distinct LPO excitatory neurons project separately to the aversive processing center lateral habenula (LHb) and the reward processing hub ventral tegmental area (VTA). Following chronic restraint stress (CRS), the LHb-projecting and VTA-projecting LPO neurons exhibited increased and decreased neuronal activities, respectively. Optogenetic activation of LHb-projecting LPO excitatory neurons and LPO excitatory neuronal terminals within LHb evoked aversion and avoidance behaviors, while activation of VTA-projecting LPO excitatory neurons and LPO excitatory neuronal terminals within VTA produced preference and exploratory behaviors in mice. Furthermore, either optogenetic inhibition of LHb-projecting LPO excitatory neurons or activation of VTA-projecting LPO excitatory neurons during CRS effectively prevented the development of depressive-like behaviors. Our study unveils, for the first-time, divergent pathways originating from LPO that regulate opposite affective states in mice and implicates that an imbalance of their activities could lead to depressive-like behaviors. These circuitries represent promising therapeutic targets to relieve emotional dysfunctions in neuropsychiatric disorders.</p></div>","PeriodicalId":19125,"journal":{"name":"Neurobiology of Stress","volume":"32 ","pages":"Article 100667"},"PeriodicalIF":4.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352289524000638/pdfft?md5=1523f24ce25ac9686ea2b799467f5764&pid=1-s2.0-S2352289524000638-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141979596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Neurobiology of Stress
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1