山东大学学报(医学版) ›› 2015, Vol. 53 ›› Issue (12): 38-42.doi: 10.6040/j.issn.1671-7554.0.2015.467
黄惠锋1, 姚芳1, 白雪2,3
HUANG Huifeng1, YAO Fang1, BAI Xue2,3
摘要: 目的 考察前列腺素E1(PGE1)冻干脂微球在比格犬体内的药动学特征,为其临床人体用药提供参考依据。方法 24只比格犬随机分为对照组和低、中、高剂量组,每组6只,分别静脉给予参比制剂"凯时"与20、32、64μg/dog的受试制剂PGE1冻干脂微球,于不同时间点采集血样,采用LC-MS/MS法测定比格犬体内PGE1的血药浓度。结果 比格犬静脉推注32μg/dog剂量的PGE1冻干脂微球后,血浆中PGE1的t1/2为(7.5±3.7)min,tmax为(7.6±2.9)min,Cmax为(105.0±40.4)ng/L,AUC(0~18 min)为(933.1±359.0)ng·min/L,与参比制剂"凯时"间的差异无统计学意义(P>0.05);在低、中、高3个不同剂量下,PGE1的AUC(0~18 min)、Cmax分别与剂量呈线性正相关,且性别差异无统计学意义(P> 0.05)。结论 PGE1冻干脂微球与其市售脂微球注射液"凯时"具有相同的药动学特征,不同剂量水平不影响其在比格犬体内的药动学过程。
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