溢流式溶出法评价药物体外缓释性能的可行性研究
发布时间:2018-11-09 16:33
【摘要】:目的:研究溢流式溶出法用于评价药物体外缓释性能的可行性。方法:模拟体内药物的消除过程建立溢流式溶出法,以两个不同厂家的硝苯地平缓释片(Ⅰ)作为模型药物A、B,考察在溶出介质3种不同溢流速度(0、1.50、3.00 mL/min)下模型药物在释放池中的药-时曲线、累积释放度-时间曲线和释放速度-时间曲线。结果:溶出介质溢流速度为0时,药物的累积溶出度与常规溶出法结果一致;随着溢流速度增加,释放池中药物A、B的c_(max)均降低[A:(8.89±0.20)、(5.21±0.04)、(3.51±0.03)μg/mL;B:(7.62±0.05)、(4.80±0.09)、(2.89±0.04)μg/mL],累积释放度均增加[A:(85.47±2.45)%、(94.29±2.44)%、(96.04±2.56)%;B:(73.28±1.13)%、(78.46±1.94)%、(82.50±1.69)%],t_(max)均提前(A:1.5、1.0、0.5 h;B:2.0、1.0、0.5 h)。结论:溢流式溶出法避免了释放池中药物浓度过大对药物释放的抑制,使药物释放更完全,可更准确地评价制剂的体外缓释性能。
[Abstract]:Objective: to study the feasibility of overflow dissolution method for evaluation of drug release in vitro. Methods: an overflow dissolution method was established by simulating the drug elimination process in vivo. Two kinds of nifedipine sustained-release tablets (鈪,
本文编号:2320962
[Abstract]:Objective: to study the feasibility of overflow dissolution method for evaluation of drug release in vitro. Methods: an overflow dissolution method was established by simulating the drug elimination process in vivo. Two kinds of nifedipine sustained-release tablets (鈪,
本文编号:2320962
本文链接:https://www.wllwen.com/yixuelunwen/yiyaoxuelunwen/2320962.html
最近更新
教材专著