星球细胞调节脑血流和神经元对前额叶皮质可卡因的反应
Congwu Du1, Kichon Park1, Yueming Hua1
1Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, 11794, USA.
Molecular psychiatry
|January 18, 2024
概括
星球细胞调节大脑血流和可卡因.
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
- 神经药理学神经药理学
背景情况:
- 可卡因会影响大脑血管和神经元功能.
- 星球细胞调节神经血管合,但它们在可卡因影响中的具体作用尚不清楚.
- 现有的神经成像技术难以区分可卡因的神经元,质和直接血管效应.
研究的目的:
- 研究星体细胞在可卡因引起的大脑血液动力学和神经元活动的变化中的作用.
- 为了区分神经细胞贡献与可卡因的直接血管影响.
- 利用一种新的成像技术,同时测量神经元,星细胞和血管动力学.
主要方法:
- 开发并使用多通道光和光学相干多普勒显微镜 (fl-ODM).
- 在小鼠体内同时测量神经元和天体细胞活性 (Ca2+N,Ca2+A) 和脑血流速度 (CBFv).
- 使用化学遗传学来抑制基线和可卡因挑战期间的天体细胞活动.
主要成果:
- 可卡因诱导的CBFv变化与天体细胞活性 (Ca2+A) 相关联.
- 基线上的星系细胞抑制导致血管扩张和CBFv增加,表明星系细胞对血管度的调节.
- 在可卡因挑战期间的天体细胞抑制阻断了血管收缩和CBFv下降,并减弱了神经元激活 (Ca2+N).
结论:
- 星球细胞在调节基线血管度和脑血流方面发挥着至关重要的作用.
- 星球细胞调节可卡因的血管收缩作用和相关的神经元激活在前额叶皮层.
- 向星球细胞活动可能为减轻可卡因诱导的血管和神经元毒性提供治疗潜力.
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