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Distinguishing neural ensembles in the infralimbic cortex that regulate stress vulnerability and coping behavior 边缘下皮层中调节压力易损性和应对行为的区分神经系统
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-03-20 DOI: 10.1016/j.ynstr.2025.100720
Jenna L. Laymon , Conner J. Whitten , Anna F. Radford , Alonnah R. Brewer , Yash S. Deo , Mackenzie K. Hooker , Akhil A. Geddati , Matthew A. Cooper
Neural ensembles in the medial prefrontal cortex regulate several types of responses to stress. We used a Syrian hamster model to investigate the role of infralimbic (IL) neurons in coping with social defeat stress and vulnerability to subsequent anxiety-like behavior. We created social dominance relationships in male and female hamsters, used a robust activity marker (RAM) approach to label IL neural ensembles activated during social defeat stress, and employed light-dark (LD), social avoidance (SA), and conditioned defeat (CD) tests to assess anxiety-like behavior. We found that dominant animals were less anxious in LD tests compared to subordinate animals after achieving their higher status. Also, status-dependent differences in anxiety-like behavior were maintained following social defeat in males, but not females. Subordinate males showed greater RAM-mKate2 expression in IL parvalbumin (PV) cells during social defeat exposure compared to dominant males, and submissive behavior during CD testing was correlated with RAM/PV co-expression. In contrast, greater RAM-mKate2 expression in IL neurons was correlated with a longer latency to submit during social defeat in dominant females, although the correlation of RAM/PV co-expression and defeat-induced anxiety in females was mixed. Overall, these findings suggest that activation of IL PV cells during social defeat predicts the development stress vulnerability in males, whereas activation of IL neurons is associated with a proactive response to social defeat exposure in females. Understanding how social dominance generates plasticity in IL PV cells should improve our understanding of the mechanisms by which behavioral treatments prior to stress might promote stress resilience.
内侧前额叶皮层的神经系统调节对压力的几种反应。我们使用叙利亚仓鼠模型来研究边缘下(IL)神经元在应对社会失败压力和随后的焦虑样行为脆弱性中的作用。我们在雄性和雌性仓鼠中建立了社会优势关系,使用稳健的活动标记(RAM)方法来标记在社会失败压力下激活的IL神经系统,并采用光暗(LD)、社会回避(SA)和条件失败(CD)测试来评估焦虑样行为。我们发现优势动物在获得更高的地位后,在LD测试中的焦虑程度比从属动物低。此外,在社会失败后,男性在焦虑类行为上的地位依赖差异仍然存在,而女性则没有。与优势雄鼠相比,劣势雄鼠在社会失败暴露期间IL小白蛋白(PV)细胞中RAM- mkate2的表达更高,而CD测试期间的顺从行为与RAM/PV共表达相关。相比之下,IL神经元中RAM- mkate2的高表达与优势雌性在社交失败时更长的服从潜伏期相关,尽管RAM/PV共表达与雌性失败诱导焦虑的相关性并不明确。总的来说,这些发现表明,在社交失败期间,IL PV细胞的激活预测了男性的发育应激脆弱性,而IL神经元的激活与女性对社交失败暴露的主动反应有关。了解社会支配如何在IL PV细胞中产生可塑性,可以提高我们对压力之前的行为治疗可能促进压力恢复的机制的理解。
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引用次数: 0
Effects of social isolation on locus coeruleus opioid receptor expression and affective behavior 社会隔离对蓝斑阿片受体表达和情感行为的影响
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-03-14 DOI: 10.1016/j.ynstr.2025.100717
John Tkaczynski, Jordan Riser, Maya Patel, Nicole Shellenbarger, Jin Park, Daniel Manvich, Daniel J. Chandler
Social isolation is a stressor that impairs homeostatic neuroendocrine functions and is associated with the development of several mood disorders characterized by persistent negative affect. Persistent feelings of loneliness have been growing public health concerns for several years and were greatly exacerbated by the onset of the COVID-19 pandemic. The problem has grown so severe the U.S. Surgeon General recently declared loneliness to be an epidemic health concern that is associated with poor mental and somatic health outcomes. Therefore, identifying mechanisms of neuroadaptation that contribute to the development of persistent negative affect is a critical step in the identifying better treatments for mood disorders. One region of the brain that becomes dysregulated in neuropsychiatric disease is the locus coeruleus. It is innervated by multiple stress-related peptidergic afferents, including those that release endogenous opioids to affect behavior. It is a major contributor to the behavioral limb of the stress response, but its role in the neurobiology of social behavior is understudied. Here we show that in laboratory rats, six weeks of social isolation leads to increased neophobia, reduced sociality, and passive stress coping. These behavioral changes are also associated with downregulation of the δ-opioid receptor and upregulation of the κ-opioid receptor in locus coeruleus. These findings suggest that extended social isolation promotes dysregulation of several opioid receptor subtypes in a brain structure that has an important role in regulating affective behavior, implicating them as potential targets for the treatment of neuropsychiatric disease associated with social isolation and loneliness.
社会孤立是一种压力源,它会损害体内平衡神经内分泌功能,并与几种以持续负面情绪为特征的情绪障碍的发展有关。多年来,持续的孤独感一直是日益严重的公共卫生问题,并因COVID-19大流行的爆发而大大加剧。这个问题变得如此严重,以至于美国外科医生最近宣布,孤独是一种流行病,与心理和身体健康状况不佳有关。因此,确定导致持续负面情绪发展的神经适应机制是确定更好的情绪障碍治疗方法的关键一步。在神经精神疾病中,大脑失调的一个区域是蓝斑。它受多种应激相关肽能事件的支配,包括释放内源性阿片样物质来影响行为的肽能事件。它是应激反应的行为分支的主要贡献者,但它在社会行为的神经生物学中的作用尚未得到充分研究。在这里,我们表明,在实验室大鼠中,六周的社会隔离导致新恐惧症增加,社交减少,被动应对压力。这些行为变化也与蓝斑区δ-阿片受体的下调和κ-阿片受体的上调有关。这些发现表明,延长的社会隔离促进了在调节情感行为中起重要作用的大脑结构中几种阿片受体亚型的失调,这意味着它们是治疗与社会隔离和孤独相关的神经精神疾病的潜在靶点。
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引用次数: 0
The link between early-life adversity and later alcohol use disorder: A role for microglia? 童年逆境与后来的酒精使用障碍之间的联系:小胶质细胞的作用?
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-03-01 DOI: 10.1016/j.ynstr.2025.100714
Hannah D. Lichtenstein, Michelle K. Sequeira, Jessica L. Bolton
In the clinical literature, early-life adversity (ELA) has been highly associated with the later development of alcohol misuse and alcohol use disorder (AUD). Adolescence is a period of vulnerability for the development of neuropsychiatric disorders like depression and substance use disorders like AUD, both of which have been shown to have increased risk due to ELA. Experimentation with alcohol use in adolescence is quite common, but some adolescents that engage in alcohol experimentation become prone to alcohol misuse. Here, we review evidence that experiencing ELA prior to adolescent alcohol use could make individuals more susceptible to developing AUD, and consider the neural mechanisms that may underlie this vulnerability. We focus on the potential role of microglia, the resident immune cells of the brain, which are important for sculpting brain circuits during development and are highly sensitive to environmental perturbations. We discuss the microglia-mediated developmental processes within the stress- and reward-related regions of the brain, particularly those with corticotropin-releasing factor (CRF)-expressing neurons, and how these regions can be impacted by both ELA and alcohol use. Finally, we point to the gaps in the literature surrounding the link between ELA and AUD, and how investigating microglia in the context of this “2-hit model” may shed light on possible interventions and therapeutics that can be developed for this specific clinical population.
在临床文献中,早期生活逆境(ELA)与酒精滥用和酒精使用障碍(AUD)的后期发展高度相关。青春期是神经精神疾病如抑郁症和药物使用障碍如AUD的易发时期,这两种疾病都被证明由于ELA而增加了风险。在青春期尝试饮酒是相当普遍的,但是一些从事酒精实验的青少年容易滥用酒精。在这里,我们回顾了在青少年饮酒之前经历ELA可能使个体更容易发生AUD的证据,并考虑了这种脆弱性背后的神经机制。我们专注于小胶质细胞的潜在作用,小胶质细胞是大脑的常驻免疫细胞,在发育过程中对塑造大脑回路很重要,对环境扰动高度敏感。我们讨论了小胶质细胞介导的大脑应激和奖励相关区域的发育过程,特别是那些表达促肾上腺皮质激素释放因子(CRF)的神经元,以及这些区域如何受到ELA和酒精使用的影响。最后,我们指出了文献中关于ELA和AUD之间联系的空白,以及如何在这种“两击模型”的背景下研究小胶质细胞可能会为这一特定临床人群开发可能的干预和治疗方法提供启示。
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引用次数: 0
The impact of distal stress on the spontaneous recovery of conditioned defensive responses 远端应激对条件性防御反应自发恢复的影响
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-03-01 DOI: 10.1016/j.ynstr.2025.100715
Christopher M. Klinke , Maren D. Lange , Marta Andreatta
Intense and chronic stress strengthens fear memories and increases the risk for mental disorders. Often stressful situations are experienced long before the appearance of the symptoms, but so far, little has been investigated on how distal stress alters fear memories. In a four-day paradigm, 131 healthy individuals were either assigned to the stress-group by means of the socially evaluated cold-pressor test (SECPT) or to the sham-group (control condition). Twenty-four hours later, participants underwent fear acquisition during which two shapes were presented. The first shape (conditioned stimulus, CS+) was associated with an electro-tactile stimulation (unconditioned stimulus, US), whereas the second shape (CS-) were presented alone. During extinction training, both shapes were presented while the US was omitted. To investigate if stress induction alters extinction recall differently depending on the passage of time, participants were tested either one day (recent) or 15 days (remote) after extinction training. Learning was quantified via subjective ratings, startle reflex and skin conductance response. While we found successful acquisition and extinction of the conditioned defensive responses, there was no effect of stress on these learning processes. Stress induction did not alter the spontaneous recovery of the conditioned defensive verbal responses but of the physiological responses as stressed individuals tested two weeks after extinction training showed startle potentiation to CS + vs. CS-. In conclusion, distal stress, even if mild, can strengthen fear memories and weaken extinction memory by the passage of time. This could be a possible mechanism facilitating the onset of stress-related and anxiety disorders.
强烈和长期的压力会增强恐惧记忆,增加患精神疾病的风险。通常在症状出现之前,人们就已经经历了紧张的情况,但到目前为止,很少有人研究远端压力是如何改变恐惧记忆的。在为期四天的研究范式中,131名健康个体通过社会评价冷压试验(SECPT)被分配到压力组或假组(对照条件)。24小时后,参与者经历了恐惧习得,在此期间,他们看到了两个形状。第一种形状(条件刺激,CS+)与电触觉刺激(非条件刺激,US)相关联,而第二种形状(CS-)单独呈现。在消光训练中,这两种形状都被呈现,而美国被省略。为了研究压力诱导是否会随着时间的推移而不同地改变消退记忆,参与者在消退训练后一天(最近)或15天(远程)进行了测试。学习通过主观评分、惊吓反射和皮肤电导反应来量化。虽然我们发现条件防御反应的成功获得和消失,但压力对这些学习过程没有影响。应激诱导不改变条件防御言语反应的自发恢复,但生理反应的自发恢复,应激个体在灭绝训练后两周的测试中显示出对CS +和CS-的惊吓增强。总之,随着时间的推移,远端压力,即使是轻微的,也会增强恐惧记忆,削弱灭绝记忆。这可能是一种促进压力相关和焦虑障碍发病的可能机制。
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引用次数: 0
Early-life stress sensitizes response to future stress: Evidence and mechanisms 早期生活压力对未来压力的敏感性反应:证据和机制
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-03-01 DOI: 10.1016/j.ynstr.2025.100716
Catherine Jensen Peña
Early-life stress sensitizes individuals to additional stressors and increases lifetime risk for mood and anxiety disorders. Research in both human populations and rodent models of early-life stress have sought to determine how different types of stressors contribute to vulnerability, and whether there are developmental sensitive periods for such effects. Although differences in the type and timing of rodent early-life stress paradigms have led to differences in specific behavioral outcomes, this complexity is present among humans as well. Robust rodent research now shows how early-life stress increases sensitivity to future stressors at behavioral, neural circuit, and molecular levels. These recent discoveries are laying the foundation for translation to more effective interventions relevant for those who experienced childhood stress and trauma.
早期生活的压力使个体对额外的压力源敏感,并增加终身患情绪和焦虑障碍的风险。在人类种群和啮齿动物的早期生活压力模型中,研究人员试图确定不同类型的压力源是如何导致脆弱性的,以及这种影响是否存在发育敏感期。尽管啮齿动物早期生活压力范式的类型和时间的差异导致了特定行为结果的差异,但这种复杂性也存在于人类中。强有力的啮齿动物研究表明,早期生活中的压力如何在行为、神经回路和分子水平上增加对未来压力源的敏感性。这些最近的发现为转化为对那些经历过童年压力和创伤的人进行更有效的干预奠定了基础。
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引用次数: 0
Gut Microbiome-Liver-Brain axis in Alcohol Use Disorder. The role of gut dysbiosis and stress in alcohol-related cognitive impairment progression: possible therapeutic approaches 酒精使用障碍中的肠道微生物群-肝-脑轴。肠道生态失调和应激在酒精相关认知障碍进展中的作用:可能的治疗方法
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-02-08 DOI: 10.1016/j.ynstr.2025.100713
Emilio Merlo Pich , Ioannis Tarnanas , Patrizia Brigidi , Ginetta Collo
The Gut Microbiome-Liver-Brain Axis is a relatively novel construct with promising potential to enhance our understanding of Alcohol Use Disorder (AUD), and its therapeutic approaches. Significant alterations in the gut microbiome occur in AUD even before any other systemic signs or symptoms manifest. Prolonged and inappropriate alcohol consumption, by affecting the gut microbiota and gut mucosa permeability, is thought to contribute to the development of behavioral and cognitive impairments, leading to Alcohol-Related Liver Disorders and potentially progressing into alcoholic cirrhosis, which is often associated with severe cognitive impairment related to neurodegeneration, such as hepatic encephalopathy and alcoholic dementia.
The critical role of the gut microbiota is further supported by the efficacy of FDA-approved treatments for hepatic encephalopathy in alcoholic cirrhosis (i.e., lactulose and rifaximin). To stimulate new research, we hypothesize that interactions between a maladaptive stress response and a constitutional predisposition to neurodegeneration underlie the progression of AUD to conditions of Alcohol-Related Clinical Concerns with severe cognitive impairment, which represent a significant and costly burden to society. Early identification of AUD individuals at risk for developing these conditions could help to prioritize integrated therapeutic interventions targeting different substrates of the Gut Microbiome-Liver-Brain axis. Specifically, addiction medications, microbiome modulators, stress-reducing interventions, and, possibly soon, novel agents that reduce hepatic steatosis/fibrosis will be discussed in the context of digitally supported integrated therapeutic approaches. The explicit goal of this AUD treatment performed on the early stage of the disorder would be to reduce the transition from AUD to those conditions of Alcohol-Related Common Clinical Concerns associated with severe cognitive impairment, a strategy recommended for most neurological neurodegenerative disorders.
肠道微生物组-肝-脑轴是一个相对较新的结构,有希望增强我们对酒精使用障碍(AUD)及其治疗方法的理解。AUD患者肠道微生物组的显著改变甚至在任何其他系统性体征或症状出现之前就已发生。长期和不适当的饮酒,通过影响肠道微生物群和肠道粘膜通透性,被认为有助于行为和认知障碍的发展,导致酒精相关性肝病,并可能发展为酒精性肝硬化,这通常与与神经变性相关的严重认知障碍有关,如肝性脑病和酒精性痴呆。fda批准的治疗酒精性肝硬化肝性脑病(即乳果糖和利福昔明)的疗效进一步支持了肠道微生物群的关键作用。为了刺激新的研究,我们假设,适应不良的应激反应和神经变性体质易感之间的相互作用是AUD发展为酒精相关临床问题的基础,并伴有严重的认知障碍,这对社会来说是一个重大而昂贵的负担。早期识别有发展这些疾病风险的AUD个体可以帮助优先考虑针对肠道微生物群-肝-脑轴不同底物的综合治疗干预。具体来说,成瘾药物、微生物组调节剂、减压干预,以及可能很快就会出现的减少肝脂肪变性/纤维化的新型药物,将在数字支持的综合治疗方法的背景下进行讨论。在疾病早期进行AUD治疗的明确目标是减少AUD向与严重认知障碍相关的酒精相关常见临床问题的过渡,这是大多数神经退行性疾病推荐的策略。
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引用次数: 0
Illuminating the impact of stress: In vivo approaches to track stress-related neural adaptations 阐明压力的影响:体内方法跟踪压力相关的神经适应
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-02-07 DOI: 10.1016/j.ynstr.2025.100712
Puja K. Parekh
Stressful experiences can affect both daily life and long-term health outcomes in a variety of ways. Acute challenges may be adaptive, promoting arousal and enhancing memory and cognitive function. Importantly, however, chronic stress dysregulates the body's physiological regulatory mechanisms consisting of complex hormone interactions throughout the peripheral and central nervous systems. This disrupted signaling consequently alters the balance of synapse formation, maturation and pruning, processes which regulate neural communication, plasticity, learning, cognitive flexibility and adaptive behaviors - hallmarks of a healthy, functional brain. The chronically stressed brain state, therefore, is one which may be uniquely vulnerable. To understand the development of this state, how it is sustained and how behavior and neural function are transiently or indelibly impacted by it, we can turn to a number of advanced approaches in animal models which offer unprecedented insights. This has been the aim of my recent work within the field and the goal of my new independent research program. To achieve this, I have employed methods to uncover how key brain circuits integrate information to support motivated behaviors, how stress impacts their ability to perform this process and how best to operationalize behavioral readouts. Here I present an overview of research contributions that I find most meaningful for advancing our understanding of the impact of stress and propose new avenues which will guide my own framework to address the salient outstanding questions within the field.
压力经历会以各种方式影响日常生活和长期健康结果。急性挑战可能是适应性的,促进觉醒,增强记忆和认知功能。然而,重要的是,慢性应激失调了身体的生理调节机制,包括整个外周和中枢神经系统中复杂的激素相互作用。这种中断的信号最终改变了突触形成、成熟和修剪的平衡,这些过程调节神经通信、可塑性、学习、认知灵活性和适应性行为——这是健康、功能性大脑的标志。因此,长期受到压力的大脑状态可能是一种特别脆弱的状态。为了理解这种状态的发展,它是如何持续的,以及行为和神经功能如何受到它的短暂或不可磨灭的影响,我们可以求助于动物模型中的一些先进方法,这些方法提供了前所未有的见解。这是我最近在该领域工作的目的,也是我新的独立研究计划的目标。为了实现这一目标,我采用了一些方法来揭示关键的大脑回路是如何整合信息来支持动机行为的,压力是如何影响他们执行这一过程的能力的,以及如何最好地操作行为读数。在这里,我概述了我认为对推进我们对压力影响的理解最有意义的研究贡献,并提出了新的途径,这些途径将指导我自己的框架来解决该领域内突出的突出问题。
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引用次数: 0
The zona incerta regulates burying behavior and normalizes anxiety-like behavior in inescapable stressful male mice by object cue 无虫带通过物体提示调节不可逃避的应激雄性小鼠的埋藏行为和使焦虑样行为正常化
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-01-01 DOI: 10.1016/j.ynstr.2024.100704
Yueqin Liu , Lianli Qiu , Jiahui Qian , Qiang Xu , Rongfeng Qi , Yifeng Luo , Zhihong Cao , Zhiqiang Zhang , Wei Wu , Longjiang Zhang , Guangming Lu
Inescapable stressful events often precipitate long-term alterations in emotion-related behaviors and poor sleep quality, with anxiety being a prevalent associated disorder. The defensive burying behavior of rodents is a response to imminent threats that becomes markedly pronounced in response to anxiety. However, the neural foundations of defensive burying behavior and etiology of anxiety remain largely unknown. In this study, we established a model employing object binding to elicit increased burying behavior in mice, thereby enhancing fear resolution and subsequently reducing anxious behaviors. Notably, the mice that associated shock with an object exhibited less object exploration and the zona incerta (ZI) neurons showed higher calcium activity during object exploration as compared to the Shock only mice. Although the calcium activity in ZI neurons of the Object mice was identical to the Shock only mice, the Object mice exhibited more burying behavior. Furthermore, the time spent in the center of the open-field test was directly proportional to the duration of burying behavior. Chemogenetic activation of ZI neurons extended the burying time and concomitantly ameliorated anxiety-like behavior. Importantly, chemogenetic enhancement of projection from ZI neurons to the ventral periaqueductal gray (vPAG), a brain region that plays a critical role in autonomic function, normalizes anxious behavior without influencing burying behavior. Collectively, these findings systematically reveal the functions and underlying mechanisms of the ZI-vPAG circuit in controlling behaviors akin to anxiety, offering significant insights into ZI's role in the pathophysiology of anxiety disorders.
不可避免的压力事件往往会导致情绪相关行为的长期改变和睡眠质量下降,焦虑是一种普遍的相关障碍。啮齿动物的防御性掩埋行为是对迫在眉睫的威胁的一种反应,在焦虑的反应中变得明显。然而,防御性埋藏行为的神经基础和焦虑的病因学在很大程度上仍然未知。在这项研究中,我们建立了一个模型,利用物体绑定来引发小鼠增加的埋藏行为,从而增强恐惧解决,从而减少焦虑行为。值得注意的是,与只有电击的小鼠相比,将电击与物体联系起来的小鼠表现出较少的物体探索,并且在物体探索过程中,无动带(ZI)神经元显示出更高的钙活性。虽然Object小鼠的ZI神经元钙活性与电击小鼠相同,但Object小鼠表现出更多的埋藏行为。此外,在空地试验中心停留的时间与掩埋行为的持续时间成正比。ZI神经元的化学发生激活延长了掩埋时间,并随之改善了焦虑样行为。重要的是,从ZI神经元到腹侧导水管周围灰质(vPAG)(一个在自主神经功能中起关键作用的大脑区域)的投射的化学发生增强使焦虑行为正常化,而不影响掩埋行为。总的来说,这些发现系统地揭示了ZI- vpag回路在控制类似焦虑的行为中的功能和潜在机制,为ZI在焦虑障碍的病理生理学中的作用提供了重要的见解。
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引用次数: 0
Shared genetic risk and causal associations between Post-traumatic stress disorder and migraine with antithrombotic agents and other medications 抗血栓药物和其他药物在创伤后应激障碍和偏头痛之间的共同遗传风险和因果关系。
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-01-01 DOI: 10.1016/j.ynstr.2024.100703
Charlotte K. Bainomugisa , The International Headache Genetics Consortium (IHGC), Dagmar Bruenig , Heidi G. Sutherland , Lyn R. Griffiths , Dale R. Nyholt , Divya Mehta
Post-traumatic stress disorder (PTSD) is a psychiatric disorder that frequently co-occurs with pain disorders including migraine. There are proposed biological, genetic and environmental factors associated with both PTSD and migraine suggesting shared etiology. Genome-Wide Association Studies (GWAS) have been used to identify genomic risk loci associated with various disorders and to investigate genetic overlap between traits. There is a significant genetic correlation between PTSD and migraine with no evidence of a causal relationship that could be attributed to pleiotropy. Cross-disorder genetic analyses were applied to investigate the genetic overlap and causal associations using GWAS summary statistics of PTSD (n = 214408), migraine (n = 873341) and 23 medication use traits (n = 78808–305913) including anti-depressants, anti-migraine preparations and beta-blocking agents.
Across the entire genome, anti-thrombotic agents had a significant and negative genetic correlation with PTSD (rG = −0.2, PFDR = 0.032) and a positive genetic correlation with migraine (rG = 0.26, PFDR = 2.23 x 10−8). PTSD showed significant genetic correlation with 11 other medication use traits including beta blocking agents (rG = −0.11, PFDR = 0.034). Of the 2495 genomic regions tested, PTSD showed significant local genetic correlation with 12 medication use traits at 43 loci; while migraine showed significant genetic correlation with only anti-inflammatory agents and anti-rheumatic products at locus 12:57522282–57607142 (DAB1) (P < 2 x 10−5). The genetic liability to PTSD had a causal effect on increased risk of using pain medication such as opioids (βivw = 0.59, P = 5.21 x 10−5) while the genetic liability to migraine had a causal effect on the increased risk of using anti-thrombotic agents (βivw = 0.59, P = 1.69 x 10−7). The genes in the genomic regions shared between PTSD and medication use traits were enriched in neural-related pathways such as neuron development, neurogenesis and protein kinase activity. These results provide further insight into the genetically controlled biological and environmental factors underlying the shared etiology between PTSD and migraine. The identified biomarkers can be used as a basis for investigation as potential drug targets for both disorders. These findings are significant for drug re-purposing and treatment of PTSD and migraine using monotherapy.
创伤后应激障碍(PTSD)是一种精神障碍,经常与偏头痛等疼痛障碍共同发生。目前提出的生物、遗传和环境因素与创伤后应激障碍和偏头痛有关,这表明它们有共同的病因。全基因组关联研究(GWAS)已被用于识别与各种疾病相关的基因组风险位点,并研究性状之间的遗传重叠。创伤后应激障碍和偏头痛之间存在显著的遗传相关性,但没有证据表明其与多效性之间存在因果关系。交叉障碍遗传分析应用GWAS汇总统计研究PTSD (n = 214408)、偏头痛(n = 873341)和23种药物使用特征(n = 78808-305913)(包括抗抑郁药、抗偏头痛制剂和β -阻滞剂)的遗传重叠和因果关系。在整个基因组中,抗血栓药物与PTSD具有显著的负遗传相关性(rG = -0.2, P FDR = 0.032),与偏头痛具有正遗传相关性(rG = 0.26, P FDR = 2.23 × 10-8)。PTSD与包括阻断剂在内的其他11种药物使用特征具有显著的遗传相关性(rG = -0.11, P FDR = 0.034)。在测试的2495个基因组区域中,PTSD与43个位点的12个药物使用特征显示出显著的局部遗传相关性;而偏头痛仅与抗炎药和抗风湿药物在基因座12:57522282-57607142 (DAB1) (P -5)有显著的遗传相关性。PTSD遗传倾向与阿片类药物使用风险增加有因果关系(β ivw = 0.59, P = 5.21 x 10-5),偏头痛遗传倾向与抗血栓药物使用风险增加有因果关系(β ivw = 0.59, P = 1.69 x 10-7)。在创伤后应激障碍和药物使用特征之间共享的基因组区域中,基因在神经元发育、神经发生和蛋白激酶活性等神经相关途径中富集。这些结果为PTSD和偏头痛之间共同病因的遗传控制的生物和环境因素提供了进一步的见解。鉴定的生物标志物可作为研究这两种疾病的潜在药物靶点的基础。这些发现对药物再利用和使用单一疗法治疗PTSD和偏头痛具有重要意义。
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引用次数: 0
Social context modulates active avoidance: Contributions of the anterior cingulate cortex in male and female rats 社会环境调节主动回避:雄性和雌性大鼠前扣带皮层的贡献。
IF 4.3 2区 医学 Q1 NEUROSCIENCES Pub Date : 2025-01-01 DOI: 10.1016/j.ynstr.2024.100702
Shannon Ruble, Karissa Payne, Cassandra Kramer, Lexe West, Halle Ness, Greg Erickson, Alyssa Scott, Maria M. Diehl
Actively avoiding danger is necessary for survival. Most research on active avoidance has focused on the behavioral and neurobiological processes when individuals learn to avoid alone, within a solitary context. Therefore, little is known about how social context affects active avoidance. Using a modified version of the platform-mediated avoidance task in rats, we investigated whether the presence of a social partner attenuates conditioned freezing and enhances avoidance compared to avoidance in a solitary context. Rats spent a similar amount of time avoiding during either context; however, rats trained in the social context exhibited greater freezing as well as lower rates of darting and food seeking compared to rats trained in the solitary context. In addition, we observed higher levels of avoidance in females compared to males in the solitary context, but this sex difference was not present in rats trained in the social context. To gain greater mechanistic insight, we optogenetically inactivated glutamatergic projection neurons in the anterior cingulate cortex (ACC) following avoidance training in either context. After avoidance was learned in a social context, photoinactivation of ACC reduced expression of avoidance during a test when the social partner was absent, but not when the partner was present. Our findings suggest a novel contribution of the ACC in avoidance that is learned with a social partner, which has translational implications for understanding ACC dysfunction in those suffering from trauma-related disorders.
积极躲避危险是生存的必要条件。大多数关于主动回避的研究都集中在行为和神经生物学过程上,当个体在一个单独的环境中学会独自回避时。因此,人们对社会环境如何影响主动回避知之甚少。使用平台介导的大鼠回避任务的改进版本,我们研究了与单独情境下的回避相比,社会伴侣的存在是否会减弱条件冻结并增强回避。在两种情况下,大鼠都花了相似的时间来躲避;然而,与在单独环境中训练的老鼠相比,在社会环境中训练的老鼠表现出更大的冻结,以及更低的飞奔和寻找食物的比率。此外,我们观察到,在独处环境中,雌性老鼠的回避程度比雄性老鼠高,但在社交环境中,这种性别差异并不存在。为了获得更深入的机制,我们在两种情况下的回避训练后,通过光遗传学灭活了前扣带皮层(ACC)中的谷氨酸能投射神经元。在社交环境中学会回避后,当社交伴侣不在场时,ACC的光失活会减少回避的表达,但当社交伴侣在场时则不会。我们的研究结果表明,前扣带皮层在逃避行为中的新贡献是与社会伙伴一起学习的,这对理解创伤相关疾病患者的前扣带皮层功能障碍具有转化意义。
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Neurobiology of Stress
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