与精神分裂症患者的认知障碍相关的状和外周多巴胺变化
Kai-Chun Yang1,2, Bang-Hung Yang3,4, Chen-Chia Lan2,5,6
1Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.
Psychological medicine
|December 2, 2024
概括
精神分裂症中多巴胺系统异常与认知障碍有关. 特定的多巴胺载体 (DAT) 水平和前体氨基酸与注意力,记忆力和执行功能缺陷相关,这表明有针对性的治疗方法.
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.
- 生物化学 生物化学
背景情况:
- 认知障碍显著影响精神分裂症的功能.
- 现有的抗精神病药物对认知缺陷的疗效有限.
- 区域多巴胺系统失调可能是有限治疗反应的基础.
研究的目的:
- 调查精神分裂症中的条状和外围多巴胺基标记物.
- 检查多巴胺基标记物和认知障碍之间的关系.
主要方法:
- 对比33名精神分裂症患者与36名健康对照人群 (HC).
- 评估认知表现. 评估认知表现.
- 使用SPECT (99mTc-TRODAT) 测量了条状多巴胺载体 (DAT) 的可用性.
- 使用UPLC量化多巴胺基前体 (氨酸,氨酸) 和竞争的分支链氨基酸 (BCAA) 的血水平.
主要成果:
- 精神分裂症患者表现出较低的认知表现,减小了条纹性DAT可用性,并降低了血中的 fenylalanine, tyrosine, leucine 和 isoleucine 水平.
- 左下尾状核/门的DAT可用性与患者的注意力缺陷相关.
- 较低的铁水平和氨/铁与BCAA的比率与患者的执行功能障碍有关.
- 在所有参与者中,与记忆相关的右尾状核/膜DAT可用性,以及与执行功能相关的血甲氨酸.
结论:
- 多巴胺系统异常导致精神分裂症的认知障碍.
- 显而易见的多巴胺变化与特定的认知缺陷相关.
- 可能需要多方面的治疗策略来解决这些障碍.
更多相关视频
相关概念视频
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
453
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...
453
Negative and Cognitive Symptoms of Schizophrenia
43
Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
43
Biological Causes of Schizophrenia
46
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...
46
Positive Symptoms of Schizophrenia: Hallucinations and Delusions
61
Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
61
Parkinson's Disease: Overview
479
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...
479
Parkinson's Disease: Treatment
219
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...
219


