The invention describes enhanced scintigraphic imaging agents that can be used to localize infection and inflammation in a mammal. Specifically, the invention relates to radiolabeled, preferably technetium-99m labeled scintigraphic imaging agents that are compositions of a polysulfated glycan or mixture thereof and a compound comprising a polybasic peptide covalently linked to a radiolabel binding moiety. Methods and kits for making such compositions, and methods for using such compositions to image sites of infection and inflammation in a mammalian body are also provided. The enhanced imaging agents exhibit improved binding affinity to the polysulfated glycans, better biodistribution and infection uptake, thus providing improved imaging results.
本发明描述了可用于定位哺乳动物感染和炎症的增强闪烁成像剂。具体地说,本发明涉及放射性标记的,最好是
锝-99m 标记的闪烁成像剂,它是由多
硫酸化聚糖或其混合物和包含与放射性标记结合分子共价连接的多基肽的化合物组成的组合物。此外,还提供了制造这种组合物的方法和试剂盒,以及使用这种组合物对哺乳动物体内感染和炎症部位成像的方法。增强型成像剂与多
硫化聚糖的结合亲和力得到改善,
生物分布和感染吸收也得到改善,从而提供更好的成像效果。