DIPYRIDAMOLE/MAGNESIUM TO IMPROVE SICKLE CELL HYDRATION

这个子项目是众多研究子项目之一

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This is a multi-center trial recruiting both adults and pediatrics with sickle cell anemia (SCA). The overall goal of this study is to determine the benefits and risks of treating patients with SCA with oral dipyridamole, oral magnesium or a combination of both drugs. While they operate by blocking different pathways, both dipyridamole and magnesium appear to block or reduce the formation of dense erythrocytes (RBC) that drive the pathophysiology of vaso-occlusion in patients with SCA. Our proposed study will focus on the following aims and hypotheses: assessing effects on red cell hydration, assessing effects on red cell survival, determining side effects and evaluating clinical outcomes such as correlation between red cell hydration effects and the clinical course of the patients. This study consists of two parts: Part I, is a phase II randomized, double blind treatment study which primary endpoint is to measure red cell hydration and Part II is a randomized, clinical trial between group comparisons with the primary endpoint being red cell survival (biotin label technique). The sample size will consist of forty eight patients enrolled in Part I and eighteen patients will be recruited for Part II. The patients in Part II do not have to have participated in Part I.