在主要抑郁障碍中,前条状网络功能减少
Reoto Kijima1, Keita Watanabe2, Naomichi Okamoto1
1Department of Psychiatry, University of Occupational and Environmental Health, Fukuoka, Japan.
Frontiers in psychiatry
|March 21, 2024
概括
重度抑郁症 (MDD) 与奖励系统功能的改变有关,特别是在年轻的患者中. 这项研究发现奖励系统变化与MDD症状严重程度之间没有相关性.
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:
- 大型抑郁症 (MDD) 显著影响全球生活质量和残疾.
- 大脑的奖励系统对激励和快乐至关重要,与MDD病理生理学有关.
- 之前的研究探讨了MDD的奖励系统网络,但关于特定症状和年龄的关系仍然不清楚.
研究的目的:
- 研究奖励系统的关键组成部分 - - 额头条纹网络 (FSN) 与未使用过药物,首发MDD患者之间的关系.
- 检查FSN与详细的MDD症状和患者年龄的关联.
- 在FSN上探索年龄和MDD之间的相互作用.
主要方法:
- 招募了89名以前从未服用过药物的MDD患者和82名健康对照 (HCs).
- 分析了FSN与年龄之间的相关性,以及MDD和HC组的子集中FSN中年龄和疾病之间的相互作用.
- 评估了FSN与MDD受试者17项汉密尔顿评分表抑郁症 (HAMD-17) 评分之间的关联.
主要成果:
- 在HC患者中,年龄与FSN相反相关,但在MDD患者中并非如此.
- FSN与MDD和年龄显著相互作用 (p=1.04e-08),表明年龄对FSN的影响在抑郁症中不同.
- 在FSN和HAMD-17总得分或个体症状得分之间没有发现相关性.
结论:
- 奖励系统功能障碍,特别是在FSN中,在MDD患者中存在.
- 年龄对FSN的影响似乎因抑郁症的存在而改变,可能更多地影响年轻患者.
- FSN可以作为MDD的生物标志物,尽管与年龄相关的影响需要仔细考虑;症状严重程度没有直接相关.
更多相关视频
08:42Design and Implementation of an fMRI Study Examining Thought Suppression in Young Women with, and At-risk, for Depression
Published on: May 19, 2015
10.6K
08:15Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model
Published on: June 6, 2025
49
相关概念视频
Depression: Overview
242
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,...
242
Depressive Disorders: Etiology
85
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...
85
Antidepressant Drugs: MAOIs and Other Agents
228
Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
228
Depressive Disorders: MDD and Dysthymia
118
Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
118
Attention-Deficit/Hyperactivity Disorder
59
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
59
Long-term Depression
30.9K
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.
30.9K
