Inflammation, Neurovascular Hemodynamics, and Sleep in Traumatic Brain Injury

经历创伤性脑损伤的退伍军人通常表现出深刻和衰弱的睡眠， 脑电波活动和脑血管功能失调。睡眠紊乱会损害情绪， 工作、认知、人际关系和整体生活质量。创伤性脑损伤会导致脑组织的局部损伤， 脑诱发长期增加的炎症和脑血流障碍。证据表明 创伤性脑损伤会增加大脑中的氧化应激，这是一个已知的诱导炎症反应的过程。 脑细胞中的分子，如神经胶质细胞和神经元，改变脑血管功能。有趣的是， 有证据表明，炎症影响脑血管功能， 睡眠，虽然负责这些影响的确切机制还没有很好地理解。这个目标 一项研究的目的是确定创伤性脑损伤如何诱导一个主要的睡眠调节炎症通路 在睡眠失调、脑电波活动和脑血管功能中受到氧化应激的影响。我们 假设创伤性脑损伤驱动氧化应激诱导慢性脑炎症损害 脑血管功能损害睡眠和脑波活动。我们使用分子和细胞技术， 多导睡眠图和血管测量的动物模型的目的，这个项目。目标1确定 氧化应激诱导的主要睡眠调节炎症途径的组成部分是如何 在脑中被创伤性脑损伤激活，导致睡眠失调、脑电波活动和血管紧张素转换酶抑制剂。 功能协调发展的目的2检查这一主要的睡眠调节炎症通路是如何被创伤性脑激活的 损伤引起脑血管功能和脑电波活动的局部和区域变化， 睡吧从该项目获得的数据将提供关键信息，以了解 炎症和脑血管功能对创伤性脑损伤发生的睡眠和脑波活动的影响。 因此，该项目的发现将提供有关睡眠失调的新靶点的信息 这将导致未来开发新的治疗创伤性脑损伤的退伍军人的方法。

Veterans that experience traumatic brain injury often exhibit profound and debilitating sleep, impairments in their brain wave activity, and dysregulated brain vascular functions. Disturbed sleep can impair mood, the ability to work, cognition, relationships, and overall quality of life. Traumatic brain injury results in localized damage to the brain inducing long-term increased inflammation and impairments in cerebral blood flow. Evidence indicates that traumatic brain injury damage increases oxidative stress in the brain—a process known to induce inflammatory molecules in brain cells, such as glia and neurons, that alters brain vascular functions. Interestingly, growing evidence suggests that inflammation affects brain vascular functions and that vascular functions change during sleep, although the exact mechanism responsible for these effects are not well understood. The goal of this proposal is to determine how traumatic brain injury induces a major sleep regulatory inflammatory pathway affected by oxidative stress in dysregulating sleep, brain wave activity, and brain vascular functions. We hypothesize that traumatic brain injury drives oxidative stress to induce chronic brain inflammation impairing brain vascular functions to impair sleep and brain wave activity. We use molecular and cellular techniques, polysomnography, and vascular measurements in animal models for the aims of this project. Aim 1 determines how components of a major sleep regulatory inflammatory pathway that is induced by oxidative stress is activated in the brain by traumatic brain injury resulting in dysregulated sleep, brain wave activity and vascular functions. Aim 2 examines how this major sleep regulatory inflammatory pathway is activated by traumatic brain injury to induce both local and regional changes in brain vascular functioning and brain wave activity during sleep. Data obtained from this project will provide critical information to understand the relationship between inflammation and brain vascular functions on sleep and brain wave activity occurring from traumatic brain injury. Thus, the findings from this project will provide information about novel targets involved in sleep dysregulation which will lead to the future development of novel treatments for veterans with traumatic brain injury.