冰片对灯盏花素鼻腔给药在大鼠体内药动学的影响

[目的]观察冰片对灯盏花素鼻腔给药在大鼠体内药动学的影响。[方法]采用125I标记法测定SD大鼠尾静脉注射、经鼻给药、经鼻给药(加1%冰片)0.4mg/kg灯盏花索后不同时间血浆中灯盏乙素的浓度,3P87软件计算药动学参数。[结果]鼻腔给药组Tmax、Cmax分别为25.0min、0.55ug/ml,经鼻给药(加冰片)组Tmax、Cmax分别为46.5min、0.50ug/ml;鼻腔给药绝对生物利用度为53.70%,而鼻腔给药(加冰片)为52.86%,两者相比,无统计学意义。[结论]冰片延长了灯盏花素鼻腔给药在大鼠血浆中灯盏乙素的达峰时间,但对AUC基本无影响。

Effects of Borneol on the Pharmackinetics of Scutellarin after Intranasal Administration in Rats

[Objective]To observe the effects of borneol on the pharmackinetics of scutellarin after intranasal administration in rats.[Method]The different time of plasma scutellarin concentration was determined by the method of 125I label after iv injection or intranasal administration,intranasal administration of scutellarin（combined with 1% borneol）0.4 mg·kg^-1 in SD rats.To calculate the pharmacokinetic parameters by 3P87 software.[Result]The time of maximum concentration（Tmax）and the maximum concentration（Cmax）at the class of intranasal administration is 25.0 min,0.55ug/ml,at the class of intranasal administration（combined with borneol）46.5 min,0.50ug/ml;the absolute bioavailability of intranasal administration is 53.70%,while the intranasal administration（combined withborneol）is 52.86%,there is no statistically significant differences compared with each other.[Conclusion]The borneol prolongs the peak time of plasma scutellarin concentration after intranasal administration in rats,but AUC is not influenced.