Endothelins and sympathetic innervation of the heart

内皮素和心脏的交感神经支配

基本信息

批准号：
8852721
负责人：
Takako Makita
金额：
$ 35.44万
依托单位：
CHILDREN'S HOSPITAL OF LOS ANGELES
依托单位国家：
美国
项目类别：
财政年份：
2013
资助国家：
美国
起止时间：
2013-06-15 至 2016-05-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8852721
关键词：
Address Anterior Arrhythmia Arteries Attention Autonomic nervous system Axon Biological Assay Blood Vessels Branchial arch structure Cardiac Cardiovascular system Cell Lineage Cervical Competence Cues Development EDN1 gene Embryo Embryonic Development Emotions Endothelin Endothelium External carotid artery structure Ganglia Genetic Head Head and neck structure Health Heart Heart Contractilities Heart Rate In Vitro Indium Lead Ligands Logic Mediating Modeling Molecular Morphogenesis Mus Nerve Neural Crest Neurons Organ Pattern Production Role Route Semaphorins Signal Transduction Site Smooth Muscle Specificity Stress Structure of sinus venosus of fetus Structure of stellate ganglion Sympathetic Ganglia Vena caval structure Venous atrioventricular node axon growth axon guidance base genetic analysis genetic approach heart function heart innervation in vitro Assay in vivo innovation nerve supply plexin prevent receptor research study response

项目摘要

DESCRIPTION (provided by applicant): During embryonic development, the heart becomes innervated by sympathetic nerves, which control heart rate and contractility. Sympathetic nerve extend along blood vessels to reach their targets, in what is called "neurovascular congruency", but virtually nothing is known of how these axons are instructed to reach the heart in order to establish a precise circuitry. New observations described in this proposal lead to a model in which endothelin signaling from specific vascular components is a critical guidance mechanism for sympathetic axons to take appropriate routes in order to reach the heart. In this application, using both in vivo and in vitro assays, I propose experiments to address the spatial and functional role of specific components of endothelin signaling in cardiac axon guidance. I approach this strategy within a developmental context that coordinates neuronal outgrowth with cardiovascular cell lineage and morphogenesis.

描述（由申请人提供）：在胚胎发育过程中，心脏受到交感神经的支配，控制心率和收缩力。交感神经沿着血管延伸到达目标，即所谓的“神经血管一致性”，但实际上我们对这些轴突如何被指示到达心脏以建立精确的回路一无所知。该提案中描述的新观察结果得出了一个模型，其中来自特定血管成分的内皮素信号传导是交感神经轴突采取适当路线到达心脏的关键引导机制。在此应用中，我使用体内和体外测定，提出实验来解决内皮素信号传导特定成分在心脏轴突引导中的空间和功能作用。我在协调神经元生长与心血管细胞谱系和形态发生的发育背景下采用这一策略。