无情和抑郁症中的奖励网络机制
Xiaoxiao Sun1, Chenxuan Jin1,2, Chun Cui3
1Department of pain, the Southwest hospital, Army Medical University, Chong qing, China.
PloS one
|September 18, 2025
概括
大型抑郁症 (MDD) 和缓解性抑郁症 (RMD) 显示出不同的奖励网络 (RN) 模式. 前带带状和丘脑是抑郁症的特征性标记物,而胰岛和下额叶皮质与抑郁症和无情感相关.
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.
- 医疗成像医学成像
背景情况:
- 抑郁症,特别是严重抑郁症 (MDD),是全球严重的健康负担.
- 无,MDD的一个核心症状,与异常的休息状态奖励网络 (RN) 功能有关.
- 目前尚不清楚无情和抑郁情节是否具有类似的RN机制,或者这些机制是否与状态或特征相似.
研究的目的:
- 为了调查休息状态奖励网络 (RN) 机制,在当前和缓解抑郁症中为安赫多尼亚奠定基础.
- 为了确定RN机制是抑郁症的状态依赖性或特征性标志物.
- 为了确定潜在的神经影像生物标志物用于抑郁症治疗.
主要方法:
- 功能性磁共振成像 (fMRI) 用于评估RN (腹状条纹体种子) 的静止状态功能连接性.
- 参与者包括患有当前抑郁症 (MDD),缓解抑郁症 (RMD) 和健康对照 (NC) 的患者.
- 分析还包括低频波动幅度 (ALFF) 和T1成像.
主要成果:
- 无症得分在MDD中最高,在NC中最低,在RMD中中等.
- 在总样本中,较高的无线性与较弱的条纹连接与膜,下额叶皮质,胰岛,前环膜 (AC) 和 thalamus 相对相关.
- MDD与下额叶皮和胰岛的条状连接较弱;RMD与尾状连接较弱;这两组的AC连接都较低. 与RMD相比,MDD具有更高的AC激活和更大的thalamus体积.
结论:
- 与当前MDD患者相比,缓解后抑郁症患者表现出不同的RN模式.
- 尾状核在抑郁症缓解中起着独特的作用.
- 前带带膜 (AC) 和丘脑机制似乎是抑郁症的特征性标志物,而胰岛和下额叶皮层机制则是抑郁症和无情感的共同特征.
相关概念视频
Depressive Disorders: Etiology
451
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...
451
Depression: Overview
794
Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
794
G-protein Coupled Receptors
131.6K
G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
131.6K
Regulation of Food Intake
2.3K
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
2.3K
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
Long-term Depression
3.1K
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.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
3.1K


