期刊
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
卷 365, 期 1, 页码 38-49出版社
SPRINGER-VERLAG
DOI: 10.1007/s002100100426
关键词
positron; fluorodopamine; sympathetic; norepinephrine; modeling
资金
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [Z01NS002979] Funding Source: NIH RePORTER
After injection of 6-[F-18]fluorodopamine, thoracic positron emission tomographic scanning visualizes the sympathetic innervation of the heart. This report introduces a kinetic model that relates 6-[F-18]fluorodopamine positron emission tomographic scanning results to specific aspects of cardiac sympathoneural function. Inputs were the 6-[F-18]fluorodopamine concentration in arterial blood and the estimated contribution of circulating metabolites of 6-[F-18]fluorodopamine. All of the three compartments in the model were intraneuronal. Two compartments corresponded to vesicles in sympathetic nerves, consistent with the multiple vesicular pool hypothesis from preclinical studies. The model successfully fit the empirical time-activity curve for myocardial 6-[F-18]fluorodopamine-derived radioactivity and predicted correctly the effects of several neuropharmacological and physiological manipulations on the time-activity curve. Myocardial cell uptake of metabolites of 6-[F-18]fluorodopamine from the circulation could explain an immediate peak of 6-[F-18]fluorodopamine-derived radioactivity. The model seems useful in predicting effects of altered cardiac sympathetic function on time-activity curves for myocardial 6-[F-18]fluorodopamine-derived radioactivity in humans.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据