血脑屏障的透性和脉冲波速的变化之间的关联在最近的小皮下心脏病发作之后
Luis Mena Romo1, Juan José Mengual1, Carla Avellaneda-Gómez1
1Neurology Department, Complex Hospitalari Universitari Moisès Broggi, Sant Joan Despí, Spain.
概括
动脉刚性可能会增加脑血屏障的透性,在最近的小皮下心脏病发作 (RSSI) 后,脑小血管疾病 (cSVD) 患者. 这一发现突出了血管健康和中风后大脑完整性之间的潜在联系.
科学领域:
- 神经学 神经学
- 心血管医学 心血管医学
- 医疗成像医学成像
背景情况:
- 大脑小血管疾病 (cSVD) 与血脑屏障 (BBB) 透性增加有关.
- 了解影响BBB透性的因素对于管理神经疾病至关重要.
研究的目的:
- 在患有cSVD的患者中调查动脉刚性和BBB透性之间的关联.
- 在中风后的2年随访期内评估BBB透性的变化.
主要方法:
- 动态对比增强型MRI (DCE-MRI) 用于评估全脑 (WB),灰质 (GM) 和白质 (WM) 中的BBB透性 (Ktrans).
- 门诊血压监测在基线和2年随访时测量了24小时系统血压 (24小时SBP),透气血压 (24小时DBP) 和脉冲波速度 (24小时PWV).
- 计算了这些参数的变化 (Δ24小时SBP, Δ24小时DBP, Δ24小时PWV).
主要成果:
- 增加的动脉硬度 (Δ24小时PWV) 与更高的BBB透性 (WB-Ktrans,GM-Ktrans,WM-Ktrans) 有显著的关联.
- 在血压变化 (Δ24小时SBP,Δ24小时DBP) 和BBB透性之间没有发现显著的关联.
- 这些关联在调整年龄,性别,BMI和血压变化后仍然显著.
结论:
- 最近发生小皮下心脏病发作 (RSSI) 后,动脉硬度的增加可能会导致BBB透性增加.
- 动脉硬是影响cSVD患者BBB完整性的潜在因素.
- 需要进一步的研究来探索针对动脉硬性的治疗策略,以保护BBB.
相关概念视频
01:15Ischemic Stroke ll: Pathophysiology
74
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
74
01:22Cerebral Edema ll: Pathophysiology
31
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this...
31