Role of NOS3 in the Cerebrovascular Response to TBI

描述（由申请人提供）：虽然严重创伤性脑损伤（TBI）不是一种通常意义上具有“易感基因”的疾病，但对TBI的反应是损伤、个体患者基因型和我们提供的治疗之间复杂的相互作用。在重症监护医学中，越来越多的重点被放在理解个体的基因构成在对重症和损伤的反应中所起的作用，以及对我们用来治疗这些疾病的疗法的反应。迄今为止，这方面的大部分工作都集中在身体对休克和败血症的反应上。在脑外伤领域的研究相对较少。在本提案中，我们计划进行一项临床研究，利用我们在脑外伤脑血管病理生理学方面的专业知识和我们在Ben Taub总医院照顾的大量脑外伤患者，研究NOS3基因多态性在严重脑外伤脑血管反应中的作用。此外，我们将提供一个已建立的组织/数据库，收集患者未使用的血液、脑脊液和脑微透析样本，以便将来对其他感兴趣的基因和转录本的研究可以利用前瞻性收集的脑血管反应的功能评估。具体目的1：研究NOS3基因多态性在人创伤性脑损伤脑血管反应中的作用。具体目的#2是研究NOS3基因多态性在脑血管系统对l -精氨酸的反应中的作用。具体目标#3是将未使用的血液、脑脊液和微透析样本存储在已建立的组织/数据库中，并与本建议收集的人口统计学/生理/治疗和遗传数据进行编码链接，以便将来研究其他可能感兴趣的基因和转录本。

DESCRIPTION (provided by applicant): Although severe traumatic brain injury (TBI) is not a disease with "susceptibility genes" in the usual sense, the response to TBI is a complex interaction among the injury, the individual patient's genotype, and the treatment that we provide. Increasingly in critical care medicine, emphasis is being placed on understanding the role that an individual's genetic makeup plays in the response to critical illness and injury, and also in response to therapies that we use to treat these disorders. Most of this work to date has concentrated on the response of the body to shock and to sepsis. Relatively little work has been done in the area of TBI. In this proposal, we plan a clinical study, using the expertise that we have in the cerebrovascular pathophysiology of TBI and the large population of TBI patients that we care for at Ben Taub General Hospital, to examine the role of polymorphisms of the NOS3 gene in the cerebrovascular response to severe TBI. In addition, we will contribute to an established tissue/data bank unused blood, cerebrospinal fluid, and cerebral microdialysis samples from the patients so that future investigations of other genes and transcripts of interest can take advantage of the prospectively collected functional evaluation of the cerebrovascular response of the patients enrolled in this study. The following three specific aims are proposed: Specific Aim #1 is to study the role of polymorphisms of the NOS3 gene in the cerebrovascular response to human traumatic brain injury. Specific Aim #2 is to study the role of polymorphisms of the NOS3 gene in the response of cerebral vasculature to administration of L-arginine. Specific Aim #3 is to store unused blood, cerebrospinal fluid, and microdialysis samples in an established tissue/data bank with a coded link to the demographic/physiological/treatment and genetic data that is collected with this proposal for future studies of other genes and transcripts that may become of interest.