作为精神运动迟缓的跨诊断基质,减少条状多巴胺传输
Ian Lam Leong1, Tsz Huen Ng2, Kunal Sen3
1Division of Psychology and Language Sciences, University College London, London WC1H 0AP, UK.
Brain : a journal of neurology
|September 18, 2025
概括
减少条状多巴胺传输可能是各种神经和精神疾病,包括帕金森病和抑郁症的精神运动迟缓的基础. 建议对这些疾病的多巴胺治疗进行进一步的研究.
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.
- 神经学 神经学
背景情况:
- 精神运动迟缓,以减缓运动和言语为特征,是各种神经和精神疾病的常见症状.
- 诸如帕金森病,抑郁症,猫头和药物诱导的帕金森症等疾病具有精神运动迟缓和白症 (认知减缓) 的共同特征.
研究的目的:
- 审查支持该假设的证据,即减少条纹性多巴胺转移是各种疾病中精神运动迟缓的共同潜在机制.
- 检查多巴胺和其他神经递质在精神运动速度中的作用,并探索治疗含义.
主要方法:
- 临床,流行病学,神经成像,实验室和治疗研究的全面审查.
- 分析证据,将精神运动减缓与多巴胺功能联系起来,特别是在条形体中.
- 对多巴胺类药物和多巴胺抗剂的治疗反应的评估.
主要成果:
- 神经成像研究通常支持精神运动减缓和减少多巴胺传递之间的关联,特别是在背状条体.
- 帕金森病和猫色症通常对多巴胺激素药物有反应,而多巴胺抗剂可以诱导帕金森症和猫色症.
- 脑流中同酸水平显示了多巴胺活性不一致和非特异的结果.
结论:
- 减少的条纹性多巴胺转移是心理运动迟缓的可信的跨诊断基质.
- 进一步的研究是必要的多巴胺治疗抑郁症与精神运动迟缓和先进的神经成像技术.
- 其他神经递质如GABA和血清素可能有助于精神运动速度,而精神疾病中的多巴胺基缺陷可能是功能性的,而不是结构性的.
相关概念视频
01:30Attention-Deficit/Hyperactivity Disorder
787
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....
787
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
1.8K
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
1.8K
01:29Drugs Affecting Neurotransmitter Synthesis
2.1K
Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
2.1K
01:24Parkinson's Disease: Treatment
987
Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
987
01:15Parkinson's Disease: Overview
1.8K
Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
1.8K
01:26Neurochemical Transmission: Sites of Drug Action
3.4K
Neurochemical transmission, the conduction of electrical impulses between neurons mediated by neurotransmitters, plays a vital role in various physiological processes. Autonomic drugs exert their effects by modulating neurotransmission within the autonomic nervous system. For instance, drugs such as hemicholinium block the precursor uptake necessary for synthesizing acetylcholine, an essential autonomic neurotransmitter. Following synthesis, neurotransmitters are stored in vesicles. Metyrosine...
3.4K