代谢
在静脉给药后,11C-胆碱经历代谢,导致在血液中检测到11C-甜菜碱作为主要代谢物。在一项针对前列腺癌或脑部疾病患者的研究中,11C-胆碱和11C-甜菜碱在人类动脉血浆中的分数活性似乎在25分钟内达到平台期,此时11C-甜菜碱代表检测到的总11C的82% ± 9%。在最后的采样时间点(40分钟)血液中检测到少量未代谢的11C-胆碱。
Following intravenous administration, 11C-choline undergoes metabolism resulting in the detection of 11C- betaine as the major metabolite in blood. In a study of patients with prostate cancer or brain disorders, the fractional activities of 11C-choline and 11C- betaine in human arterial plasma appeared to reach a plateau within 25 minutes, with 11C- betaine representing 82% ± 9% of the total 11C detected at that time point. A small amount of unmetabolized 11C-choline was detected within the blood at the final sampling time point (40 minutes).
来源:DrugBank