Synthesis and tissue distribution study of iodine-labeled benzyl- and xylylamines
摘要:
Four iodine-125 labeled mono- and diamines were prepared and evaluated as potential brain-imaging agents. The diamines are analogues of the previously reported selenium-75 labeled diamines, which show high brain uptake and retention. All of the radioiodinated amines display high initial brain uptake in rats after intravenous injection (1.7-2.4% dose/organ). The xylylenediamines show prolonged brain retention (t1/2 approximately 18 h), which is desirable for brain imaging. In contrast, the benzylamine is rapidly cleared from brain tissue (t1/2 approximately 15 min).
[EN] AMINO ACID PRECURSOR, AMINO ACID, AND PRODUCTION METHOD FOR AMINO ACID, AND PET DIAGNOSTIC TRACER USING AMINO ACID<br/>[FR] PRÉCURSEUR D'ACIDE AMINÉ, ACIDE AMINÉ, ET PROCÉDÉ DE PRODUCTION D'ACIDE AMINÉ, ET TRACEUR DE DIAGNOSTIC PAR TOMOGRAPHIE PAR ÉMISSION DE POSITONS (TEP) UTILISANT L'ACIDE AMINÉ<br/>[JA] アミノ酸前駆体、アミノ酸およびその製造方法、ならびに該アミノ酸を用いたPET診断用トレーサー