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相关概念视频

Long-term Depression01:05

Long-term Depression

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.
Long-term Depression01:03

Long-term Depression

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 time, all...

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相关实验视频

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MRI-guided dmPFC-rTMS as a Treatment for Treatment-resistant Major Depressive Disorder
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抗抑郁药与外部囊有关的微观结构变化.

Ariel Kerpel1, Elizabeth Davenport2, Amy L Proskovec2

  • 1Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA. arikerp@gmail.com.

Brain imaging and behavior
|May 30, 2024
PubMed
概括
此摘要是机器生成的。

像SSRI和SNRIs这样的抗抑郁药与大脑变化有关. 选择性血清素再吸收抑制剂 (SSRI) 显示神经元密度降低,而血清素-上腺素再吸收抑制剂 (SNRIs) 显示在外部囊中方向分散增加.

关键词:
诺德迪尔是什么意思这是SNRI的SNRI.这是一个SSRI.白质是白质的组成部分.

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科学领域:

  • 神经成像是一种神经成像.
  • 药理学 药理学是指药理学的学科.
  • 神经科学是一个神经科学.

背景情况:

  • 磁共振成像 (MRI) 研究将抗抑郁药与大脑微观结构的改变联系起来.
  • 外部囊的改变是抗抑郁药治疗反应的潜在生物标志物.
  • 之前的研究缺乏对神经元密度和白质 (WM) 纤维的方向连贯性变化的调查.

研究的目的:

  • 通过先进的MRI技术,研究抗抑郁药使用和外部囊WM微观结构之间的关系.
  • 为了检查神经元密度或定向分散在抗抑郁药使用者和对照者之间是否有所不同.
  • 为了区分与选择性血清素再吸收抑制剂 (SSRI) 和血清素-上腺素再吸收抑制剂 (SNRIs) 相关的微观结构变化.

主要方法:

  • 使用多扩散成像和神经质定向分散和密度成像 (NODDI) 的病例对照研究.
  • 对抗抑郁药的35名参与者 (25名SSRI,10名SNRIs) 与达拉斯心脏研究中的35名匹配对照进行了比较.
  • 多重线性回归分析以预测外的微观结构特征.

主要成果:

  • 在服用SSRI的患者双边外部囊中观察到神经元密度显著降低.
  • 在服用SNRIs的患者中,主要观察到外部囊中方向分散的增加.
  • 外部囊中明显的微观结构变化与不同类型的抗抑郁药物有关.

结论:

  • 抗抑郁药物与大脑外部囊中特定的微观结构变化有关.
  • SSRI与神经元密度降低有关,而SNRIs与增加的定向分散有关.
  • 这些发现有助于理解抗抑郁药对白质完整性的神经生物学影响.