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相关概念视频

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Neuroplasticity

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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相关实验视频

Updated: Jan 10, 2026

Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates
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在整个发育过程中微质可塑性介导着婴儿记忆丧失症.

Erika Stewart1,2, Louisa G Zielke1,2, Gabrielle Guillaume1,2

  • 1School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland.

bioRxiv : the preprint server for biology
|November 24, 2025
PubMed
概括

微质,大脑中的免疫细胞,调节幼儿记忆. 在婴儿期抑制微质活动可以预防婴儿失忆症,揭示了它们在记忆持久性中的作用.

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Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders
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相关实验视频

Last Updated: Jan 10, 2026

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09:12

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Characterization and Isolation of Mouse Primary Microglia by Density Gradient Centrifugation
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Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders
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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 免疫学 免疫学 免疫学

背景情况:

  • 婴儿失忆症是无法回忆起童年早期的记忆.
  • 婴儿失忆症背后的机制尚不清楚.
  • 微质细胞,大脑的免疫细胞,影响大脑发育和记忆.

研究的目的:

  • 了解婴儿失忆症的机械基础.
  • 调查微质在婴儿时期记忆形成和检索中的作用.

主要方法:

  • 在产后期分析微质形态.
  • 在婴儿动物中药理上抑制微质活性.
  • 婴儿编码记忆痕迹 (engrams) 的活动依赖标记.
  • 分析杏仁体中微质-恩格拉姆细胞相互作用.

主要成果:

  • 微质活动的变化与婴儿忘记的开始相关.
  • 在关键窗口期间抑制微质细胞可以防止婴儿因上下文恐惧记忆而丧失记忆.
  • 微质抑制影响了恩格拉姆大小,活性和微质-恩格拉姆细胞相互作用.
  • 在母体免疫激活模型中的微质功能障碍与缺乏婴儿记忆丧失有关.

结论:

  • 微质细胞是记忆可访问性和婴儿时期持久性的关键调节者.
  • 微质活动积极调节婴儿记忆.
  • 功能障碍的微质细胞可能导致神经发育障碍中的记忆障碍.