全球白质微观结构的变化由可卡因使用障碍中重复性跨脑磁性刺激引起:纵向相关性通道图学研究
Michele Porcu1,2, Luigi Cocco3, Massimo Caulo4
1Department of Radiology, AOU Cagliari, University of Cagliari, Cagliari, Italy. micheleporcu87@gmail.com.
Brain imaging and behavior
|February 7, 2026
概括
在可卡因使用障碍 (CUD) 患者中,重复性跨体磁性刺激 (rTMS) 显著增加了白质 (WM) 完整性. 这种脑刺激疗法在CUD治疗中有望改善神经连接和认知控制.
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:
- 可卡因使用障碍 (CUD) 是一个重大的公共卫生挑战,治疗干预措施有限.
- 针对左脊侧前额叶皮层的重复性跨体磁性刺激 (rTMS) 正在探索CUD神经变化.
- rTMS对CUD中白质 (WM) 微结构的影响及其与治疗结果的关系需要进一步研究.
研究的目的:
- 调查rTMS对CUD患者WM微观结构的全球影响.
- 为了分析WM完整性的纵向变化后,积极与假的rTMS治疗.
主要方法:
- 在扩散MRI数据上进行了纵向相关通道图分析.
- 量化异构 (QA) 用于评估WM微观结构的变化.
- 从接受活性rTMS (n=22) 或假rTMS (n=18) 的CUD患者的数据在 (T0) 之前和两周后 (T1) 收集.
- 使用非参数的斯皮尔曼部分相关性,控制人口因素.
主要成果:
- 与假装组相比,在活跃的rTMS组中,在大脑的9718个WM通道中观察到QA的显著增加.
- 在任何WM航道中都没有检测到质量保证的减少.
- 受影响的区域包括小脑纤维,小脑管,关联纤维和投射纤维,主要位于左半球.
结论:
- 在CUD患者中,rTMS治疗诱导了WM微观结构的广泛变化.
- 这些变化可能会增强区域间的大脑通信和认知控制.
- 需要进行更大规模的纵向研究来证实这些发现,并提高由于当前研究的样本规模较小,因此提高了概括性.
相关概念视频
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids
907
CNS stimulants, such as cocaine, amphetamines, and cannabinoids, have varying structures and mechanisms of action that lead to different therapeutic effects and side effects. Cocaine, with its molecular formula C17H21NO4, is a tropane alkaloid and a tertiary amino compound. It has two chemical forms: the hydrochloride salt and the "freebase." The former is in powder form, while the latter involves removing the hydrochloride salt to create a form that can be smoked. Cocaine exerts its...
907
Longitudinal Studies
533
Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
533
Longitudinal Research
13.4K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.4K
Classifying Matter by Composition
90.7K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
90.7K
Classifying Matter by State
104.0K
Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars.
104.0K
Physical and Chemical Properties of Matter
166.7K
The characteristics that enable us to distinguish one substance from another are called properties.
166.7K


