从创伤到抑郁:结构,突触,表观遗传和分子通路将早期压力与终身脆弱性联系起来
Mina Takahashi1, Richard C Shelton1,2
1Department of Psychiatry, Heersink School of Medicine, University of Alabama at Birmingham, Huntsville, AL, United States.
Frontiers in psychiatry
|November 3, 2025
概括
童年不良经历 (ACE) 可以在表观遗传上改变大脑发育,增加抑郁风险. 了解这些分子变化,包括DNA甲基化和microRNAs,是针对性干预创伤相关情绪障碍的关键.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 遗传学 遗传学 是一个
背景情况:
- 重度抑郁症 (MDD) 是一种普遍存在的,使人虚弱的疾病.
- 长期的生物学因素,特别是不良的童年经历 (ACE),有助于MDD的脆弱性和治疗耐药性.
- 表观遗传机制越来越多地被认为是将早期逆境与大脑功能联系起来的调解者.
研究的目的:
- 探索童年创伤,荷尔蒙失调,微质激活和抑郁症中的表观遗传修饰之间的相互作用.
- 在创伤相关情绪障碍中综合表观遗传网络和神经生物学系统的证据.
- 为了告知有针对性的干预,确定生物标志物,并支持针对抑郁症的个性化护理.
主要方法:
- 对表观遗传机制的审查 (DNA甲基化,miRNA表达) 作为对ACEs的反应.
- 检查神经生物学途径,包括神经炎症和HPA轴功能.
- 综合现有关于创伤相关抑郁症分子基础的研究.
主要成果:
- ACEs可以导致持续的表观遗传变化,例如改变的DNA甲基化 (例如NR3C1基因) 和miRNA表达 (例如miR-124,miR-135).
- 这些表观遗传改变,加上神经炎症和荷尔蒙失调,有助于神经脆弱性和MDD病理生理学.
- 特定的miRNAs影响神经炎症,突触可塑性和单氨基信号传递.
结论:
- 表观遗传修饰对于调解童年创伤对大脑功能和抑郁风险的长期影响至关重要.
- 了解这些复杂的相互作用可以导致新的诊断生物标志物和个性化治疗策略MDD.
- 对表观遗传网络和神经生物学进行进一步的研究对于推进创伤相关情绪障碍的治疗和预防自杀至关重要.
相关概念视频
Stress and Mental Health
625
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
625
Psychological and Sociocultural Causes of Schizophrenia
464
Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
464
Depressive Disorders: Etiology
428
Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
428
Biological Causes of Schizophrenia
479
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
479
Introduction to Stress and Lifestyle
505
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
505
Long-term Depression
33.1K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
33.1K


