相关实验视频

Updated: Feb 3, 2026

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Published on: June 29, 2018

在CADASIL中,海马的马振荡,线粒体和神经血管功能受损

Wenchao Shao¹, Daniel V Oliveira^1,2, Luana Naia¹

¹Department of Neurobiology, Care Science and Society, Division of Neurogeriatrics, Karolinska Institutet, SE-171 64 Solna, Sweden.

Brain : a journal of neurology

|February 2, 2026

概括

大脑自体主导动脉病变与皮下心脏病发作和白脑病变 (CADASIL) 导致海马神经元和血管损伤,导致认知能力下降. 这项研究揭示了CADASIL中的线粒体功能障碍和神经炎症,影响神经血管单元.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
血管生物学血管生物学

背景情况:

大脑自体主导动脉病变与皮下心脏病发作和白细胞脑病变 (CADASIL) 是一种与NOTCH3基因变异相关的遗传小血管疾病.
卡达西尔导致血管光滑肌细胞退化,脑缺血,认知衰退和血管痴呆.
大脑缺血的下游细胞和分子效应,特别是在像海马体这样的痴呆相关区域,仍然不太了解.

研究的目的:

在CADASIL中描述大脑缺血的细胞和分子后果,专注于海马.
评估海马神经元,线粒体和神经血管单元对CADASIL病理的敏感性.
研究突变血管光滑肌细胞 (VSMCs) 在与CADASIL相关的认知障碍中的作用.

主要方法:

利用一个人性化的CADASIL小鼠模型 (R182C-TgN3) 和死后的人类CADASIL大脑部分.
在细胞研究中使用了具有NOTCH3 p.R133C变异的初级人类大脑VSMC.
进行了ex vivo电生理学,免疫组织化学 (聚焦,iDISCO+),西部涂抹,海马试验,qPCR和单细胞RNA测序.

主要成果:

卡达西尔小鼠表现出海马的马振荡受损,神经元纤维长度减少和神经元形态异常,也在人类患者组织中观察到.
在CADASIL模型的海马体,脑血管和VSMC中,线粒体呼吸复合体水平显著下降.
人类大脑VSMCs显示线粒体呼吸,ATP生产和甘油性容量减少,同时增加了促炎性基因表达.
在CADASIL小鼠的海马体中观察到广泛的NOTCH3细胞外域积累,VSMC损失,血管密度降低,以及对血管的微质附着增加.
单细胞RNA测序确定了一个与线粒体呼吸和炎症相关的微质子集群.

结论:

在CADASIL中,小血管病理会诱导显著的海马神经元损伤,其特征是代谢和神经炎症变化.
这项研究强调了神经血管单元在CADASIL病变发生过程中的关键作用.
这些发现为未来研究CADASIL和相关痴呆症的治疗策略提供了基础.

关键词:

缺血性中风中风神经退行症的神经退行症小血管疾病是小血管疾病.血管痴呆症是一种精神病.

更多相关视频

Recording Gamma Band Oscillations in Pedunculopontine Nucleus Neurons

Recording Gamma Band Oscillations in Pedunculopontine Nucleus Neurons

Published on: September 14, 2016

The Analysis of Neurovascular Remodeling in Entorhino-hippocampal Organotypic Slice Cultures

The Analysis of Neurovascular Remodeling in Entorhino-hippocampal Organotypic Slice Cultures

Published on: October 23, 2014

相关概念视频

Peroxisomes and Mitochondria

Peroxisomes and Mitochondria

Peroxisomes and mitochondria are two important oxygen-utilizing organelles in eukaryotic cells. Mitochondria carry out cellular respiration—the process that converts energy from food into ATP. Peroxisomes carry out a variety of functions, primarily breaking down different substances, such as fatty acids.
The peroxisome is a single membrane-bound cellular organelle that can perform several different functions, including lipid metabolism and chemical detoxification. The enzymes within...

Mitochondria

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...

Oscillations In An LC Circuit

Oscillations In An LC Circuit

An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by

Forced Oscillations

Forced Oscillations

When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.

Damped Oscillations

Damped Oscillations

In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...

Oscillations about an Equilibrium Position

Oscillations about an Equilibrium Position

Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so...