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轻度创伤性脑损伤诱导皮质细胞脱离,独立于中风的脆弱性
Bailey Whitehead1, Deborah Corbin1, Ali Albowaidey1
1Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA.
Neuroscience letters
|November 10, 2023
概括
轻度创伤性脑损伤 (mTBI) 不会通过分离心脏细胞来恶化中风的结果. 这项研究发现mTBI诱导的细胞脱是暂时的,并没有增加中风损伤,这表明其他机制也参与其中.
科学领域:
- 神经科学是一个神经科学.
- 血管生物学 血管生物学
- 创伤研究 创伤研究
背景情况:
- 轻度创伤性脑损伤 (mTBI) 是已知的缺血性中风风险因素.
- 将mTBI与较差的中风结果联系在一起的潜在机制尚未完全理解.
- 大脑血管功能障碍,特别是涉及细胞周细胞,是潜在的贡献者.
研究的目的:
- 调查mTBI诱导的细胞脱是否会加剧缺血性中风的结果.
- 为了确定mTBI后的细胞离的时间进程.
- 为了比较mTBI诱导与药物诱导的脑细胞分离对中风损伤的影响.
主要方法:
- 小鼠经历了轻微的闭头损伤 (mTBI) 或接受了伊马替尼甲酸治疗以诱导细胞圈脱离.
- 细胞分离被评估在受伤后的7,14,28天.
- 缺血性中风是通过中脑动脉封闭诱导的mTBI和/或伊马替尼治疗的小鼠.
主要成果:
- mTBI造成了暂时的细胞脱,持续至受伤后的14天,并在28天后恢复.
- 在mTBI后的细胞脱离水平与因伊马丁尼布引起的水平相似.
- 只有mTBI,而不是单独因伊马替尼诱导的细胞膜脱离,在中风后显著增加了心脏病发作量.
结论:
- 在mTBI之后的过渡性细胞脱可能不足以解释恶化的中风结果.
- 这些发现表明,与mTBI相关的脑血管功能障碍涉及的机制超出了简单的皮质细胞脱离.
- 了解这些机制对于解决mTBI后未来缺血性中风风险增加至关重要.
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