当前位置: X-MOL 学术Int. J. Pharm. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ternary inclusion complex formation and stabilization of limaprost, a prostaglandin E derivative, in the presence of alpha- and beta-cyclodextrins in the solid state.
International Journal of Pharmaceutics ( IF 5.3 ) Pub Date : 2016 Jun 7 , DOI: 10.1016/j.ijpharm.2016.06.018
Yasuo Inoue , Daisuke Iohara , Noboru Sekiya , Masanobu Yamamoto , Hiroyuki Ishida , Yoko Sakiyama , Fumitoshi Hirayama , Hidetoshi Arima , Kaneto Uekama

Limaprost/alpha-cyclodextrin (CD)/beta-CD ternary inclusion complex was prepared by freeze-drying a solution containing all three components. Under humid conditions, limaprost was more stable in the ternary alpha-/beta-CD inclusion complex than in the binary alpha- or beta-CD complex. Specifically, during storage at 30 degrees C/75% relative humidity (R.H.) for 4 weeks, about 19% of limaprost degraded into 17S,20-dimethyl-trans-Delta2-prostaglandin A1 (referred as 11-deoxy-Delta10) in the beta-CD complex, 8.1% degraded in the alpha-CD complex, and only 2.2% degraded in the alpha-/beta-CD complex. The mechanism of limaprost stabilization in the presence of both CDs was investigated by Raman and solid-state NMR spectroscopy and powder X-ray diffractometry. The fast degradation of limaprost to 11-deoxy-Delta10 in the beta-CD complex was due to the rapid crystallization of beta-CD from the complex, liberating the free amorphous drug, which is susceptible to degradation. The dissociation and crystallization of beta-CD from the inclusion complex were suppressed by freeze-drying limaprost in the presence of both alpha- and beta-CDs. In addition, the interaction between limaprost and the two CDs was reinforced by inclusion of different moieties of limaprost: alpha-CD predominantly included the alkyl omega-chain, whereas beta-CD included the five-membered ring. Thus, a stable ternary inclusion complex was formed that included limaprost, maintaining the amorphous state of the complex and dramatically stabilizing the drug under humid conditions.

中文翻译:

在固态的α-和β-环糊精存在下,利马前列素(一种前列腺素E衍生物)的三元包合物形成和稳定化。

利马前列素/α-环糊精(CD)/β-CD三元包合物通过冷冻干燥包含所有三种成分的溶液来制备。在潮湿条件下,利马前列素在三元α-/β-CD包合物中比在二元α-或β-CD包合物中更稳定。具体而言,在30摄氏度/ 75%相对湿度(RH)下存储4周的过程中,利马前列素约有19%降解为17S,20-二甲基-反-Delta2-前列腺素A1(称为11-脱氧-Delta10)。 β-CD复合物,其中α-CD复合物的降解率为8.1%,而α-/β-CD复合物的降解率仅为2.2%。通过拉曼光谱和固态NMR光谱法以及粉末X射线衍射法研究了在两种CD均存在下利马前列素稳定的机制。利马前列素在β-CD复合物中快速降解为11-脱氧-Delta10是由于β-CD从复合物中快速结晶,释放了易降解的游离无定形药物。通过在α-CD和β-CD的存在下冻干利马前列素抑制了β-CD从包合物中的解离和结晶。此外,利马前列素与两个CD之间的相互作用通过包含利马前列素的不同部分而得到增强:α-CD主要包含烷基欧米茄链,而β-CD包含五元环。因此,形成了包含利马前列素的稳定的三元包合物,保持了复合物的无定形状态并在潮湿条件下显着稳定了药物。释放出易降解的游离无定形药物。β-CD从包合物中的解离和结晶可通过在α-CD和β-CD均存在下冷冻干燥利马前列素来抑制。此外,利马前列素和两个CD之间的相互作用通过包含利马前列素的不同部分而得到增强:α-CD主要包括烷基ω-链,而β-CD包括五元环。因此,形成了包含利马前列素的稳定的三元包合物,保持了复合物的无定形状态并在潮湿条件下显着稳定了药物。释放出易降解的游离无定形药物。β-CD从包合物中的解离和结晶可通过在α-CD和β-CD均存在下冷冻干燥利马前列素来抑制。此外,利马前列素和两个CD之间的相互作用通过包含利马前列素的不同部分而得到增强:α-CD主要包括烷基ω-链,而β-CD包括五元环。因此,形成了包含利马前列素的稳定的三元包合物,保持了复合物的无定形状态并在潮湿条件下显着稳定了药物。β-CD从包合物中的解离和结晶可通过在α-CD和β-CD均存在下冷冻干燥利马前列素来抑制。此外,利马前列素和两个CD之间的相互作用通过包含利马前列素的不同部分而得到增强:α-CD主要包括烷基ω-链,而β-CD包括五元环。因此,形成了包含利马前列素的稳定的三元包合物,保持了复合物的无定形状态并在潮湿条件下显着稳定了药物。β-CD从包合物中的解离和结晶可通过在α-CD和β-CD均存在下冷冻干燥利马前列素来抑制。此外,利马前列素和两个CD之间的相互作用通过包含利马前列素的不同部分而得到增强:α-CD主要包括烷基ω-链,而β-CD包括五元环。因此,形成了包含利马前列素的稳定的三元包合物,保持了复合物的无定形状态并在潮湿条件下显着稳定了药物。
更新日期:2017-01-31
down
wechat
bug