PATHOPHYSIOLOGY O THE ENDOTHELIUM

血管的各种成分之间的相互作用 血管壁-内皮、平滑肌、结缔组织-以及可溶性和 血液中的细胞成分，主要参与了 炎症、血栓形成、动脉粥样硬化和 免疫性血管损伤 本项目的总体目标 是研究某些相互作用的机制， 内皮细胞起着核心作用。 项目1将研究 使用细胞生物学， 体外免疫学和生物化学方法;项目2将研究 培养的内皮细胞和平滑肌细胞中的大分子内吞作用， 一个与物质从血液转移到 以及细胞内代谢;项目3将研究 单核细胞/巨噬细胞产生间充质细胞生长因子， 这些细胞在体内内膜（平滑肌）增生中的作用; 项目4将使用动物模型来研究非剥脱的作用 内皮损伤与血清脂蛋白和血小板的相互作用 在动脉粥样硬化的发病机制;项目5将研究 血小板糖蛋白1b的生物化学相互作用 蛋白质和内皮下基质;项目6将检查细胞和 内皮细胞介导的平滑肌细胞反应的生化机制 肌肉细胞血管活性激素;项目7将研究各种 内皮细胞和淋巴细胞的免疫相互作用。 细胞 培养核心将提供良好表征的血管和 非血管细胞类型，以及体外模型系统的经验， 研究细胞间的相互作用 形态学核心将提供专业知识 以及扫描和透射电子显微镜的设备， 超微结构免疫细胞化学、放射自显影和其他技术。 生物化学核心将提供气体和高压设施 液相色谱法 因此这些研究结合了联合收割机细胞生物学， 生物化学、免疫学和实验病理学方法， 探索血管疾病的机制。

Interactions among the various components of the vascular wall---endothelium, smooth muscle, connective tissue---and the soluble and cellular constituents of the blood, are prominently involved in the pathophysiology of inflammation, thrombosis, atherosclerosis and immunologic vascular injury. The overall objective of this Program Project is to examine the mechanisms of certain of these interactions in which the endothelium plays a central role. Project 1 will study the mechanisms of leukocyte adhesion to endothelial cells using cell biological, immunological and biochemical approaches in vitro; Project 2 will study macromolecular endocytosis in cultured endothelial and smooth muscle cells, a process relevant to the transfer of substances from blood to interstitium, as well as intracellular metabolism; Project 3 will study the production of mesenchymal cell growth factor(s) by monocyte/macrophages and the role of these cells in intimal (smooth muscle) hyperplasia in vivo; Project 4 will use animal models to examine the role of non-denuding endothelial injury and the interaction of serum lipoproteins and platelets in the pathogenesis of atherosclerosis; Project 5 will examine the biochemical interactions of platelet glycoprotein 1b, von Willebrand's protein and the subendothelial matrix; Project 6 will examine cellular and biochemical mechanisms included in endothelial-mediated responses of smooth muscle cells to vaso-active hormones; Project 7 will study various immunological interactions of endothelium and lymphocytes in vitro. A Cell Culture Core will provide well characterized cultures of vascular and non-vascular cell types, and experience with in vitro model systems for studying cellular interactions. A Morphology Core will provide expertise and facilities for scanning and transmission electron microscopy, ultrastructural immunocytochemistry, autoradiography and other techniques. A Biochemistry Core will provide facilities for gas and high pressure liquid chromatography. These studies thus combine cell biological, biochemical, immunological and experimental pathological approaches to probe vascular disease mechanisms.