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相关概念视频

Neuron Structure01:30

Neuron Structure

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Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
Structure and Function of Neurons
The neuronal cell body—the soma— houses the nucleus and organelles vital to...
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相关实验视频

Updated: Jul 25, 2025

3D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse
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脑细胞结构的死后变化:一篇综述

Margaret M Krassner1,2,3, Justin Kauffman1,2,3, Allison Sowa4

  • 1Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York, USA.

Free neuropathology
|June 29, 2023
PubMed
概括
此摘要是机器生成的。

死后间隔 (PMI) 显著改变大脑细胞结构和形态学. 了解这些变化对于使用尸检脑组织进行可靠研究至关重要.

关键词:
自溶解是一种自溶的过程.大脑绘制地图.瘤性瘤性亡.尸检后的变化种类之间的差异是物种之间的差异.染色方法 染色方法

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Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
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Last Updated: Jul 25, 2025

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Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
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科学领域:

  • 神经科学是一个神经科学.
  • 细胞生物学 细胞生物学
  • 病理学 病理学 病理学

背景情况:

  • 大脑细胞结构对神经功能至关重要,在神经疾病中经常发生改变.
  • 死后间隔 (PMI) 开始于血液流动停止后,导致快速的细胞能量耗尽和分解.
  • 研究尸检脑组织需要了解PMI如何影响细胞形态学,以获得强大且可重复的方法.

研究的目的:

  • 审查和划分在死后间隔 (PMI) 期间大脑细胞形态测量的预期变化.
  • 为研究人员使用人体死后脑组织提供见解.

主要方法:

  • 在多个数据库中进行了系统的文献搜索.
  • 2119篇摘要和361篇全文文章进行了选.
  • 综述中包括了172项研究.

主要成果:

  • 早期PMI事件包括流体转移导致细胞体积变化和真空化.
  • 细胞膜可视化损失发生在PMI后期.
  • 分解速度因可视化方法,结构特征,储存温度和物种而异.
  • 细胞膜变形发生在几分钟内,而拓关系持续更长时间.
  • 渐进性细胞膜损失发生在不确定的时间内,通常是几个小时到几天.

结论:

  • 在PMI期间的细胞变化是复杂和可变的.
  • 了解PMI诱导的形态变化对于解释死后大脑研究结果至关重要.
  • 这一评论有助于研究人员应对使用死后脑组织的挑战.