溢流式溶出法評(píng)價(jià)藥物體外緩釋性能的可行性研究
發(fā)布時(shí)間:2018-11-09 16:33
【摘要】:目的:研究溢流式溶出法用于評(píng)價(jià)藥物體外緩釋性能的可行性。方法:模擬體內(nèi)藥物的消除過程建立溢流式溶出法,以兩個(gè)不同廠家的硝苯地平緩釋片(Ⅰ)作為模型藥物A、B,考察在溶出介質(zhì)3種不同溢流速度(0、1.50、3.00 mL/min)下模型藥物在釋放池中的藥-時(shí)曲線、累積釋放度-時(shí)間曲線和釋放速度-時(shí)間曲線。結(jié)果:溶出介質(zhì)溢流速度為0時(shí),藥物的累積溶出度與常規(guī)溶出法結(jié)果一致;隨著溢流速度增加,釋放池中藥物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],累積釋放度均增加[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)。結(jié)論:溢流式溶出法避免了釋放池中藥物濃度過大對(duì)藥物釋放的抑制,使藥物釋放更完全,可更準(zhǔn)確地評(píng)價(jià)制劑的體外緩釋性能。
[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,
本文編號(hào):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,
本文編號(hào):2320962
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