渗透促进剂对酒石酸美托洛尔离子电渗传输和药物在皮肤中滞留的影响。

Effect of permeation enhancers on the iontophoretic transport of metoprolol tartrate and the drug retention in skin.

机构信息

M.M. College of Pharmacy, M.M. University, Mullana, India.

出版信息

Drug Deliv. 2011 Jan;18(1):19-25. doi: 10.3109/10717544.2010.509361. Epub 2010 Aug 21.

Abstract

Utilization of chemical penetration enhancers in conjunction with iontophoresis is regarded as the most effective method to enhance the passage of molecules across the skin barrier. A systematic approach to enhance the transdermal delivery of metoprolol tartrate and the subsequent release of the drug depot in the skin was investigated. Gel formulations with proximate viscosity were prepared and assessed for the effect of polymers (carbopol, hydroxypropyl methyl cellulose, and methyl cellulose), permeation enhancers (5% w/w, sodium lauryl sulfate (SLS), dimethyl formamide, n-methyl-2-pyrrolidone, and polyethylene glycol 400), and the combination approach (permeation enhancers with iontophoresis-0.5 mA/cm² on the drug delivery. The flux values observed in passive (4.59-5.89 µg/cm²/h) and iontophoresis (37.99-41.57 µg/cm²/h) processes revealed that the permeation of metoprolol was not influenced by the polymers studied, under similar conditions, and further studies were carried out using carbopol gel as a representative polymer. Appreciable enhancement (5-fold) in drug delivery was observed with SLS in the passive process while the optimum iontophoretic delivery condition ensured better delivery (7-fold). Combination of iontophoresis with SLS further enhanced the drug delivery (~9-fold) and leads to noticeable drug retention in the skin as well. Moreover, the drug retained in the cutaneous layer of the skin eventually released over a period of time (5 days) and followed a near first order profile. This study concludes that the combination of iontophoresis with SLS augmented the metoprolol delivery and rendered skin drug depot, which eventually released over a period of time.

摘要

联合离子导入使用化学渗透增强剂被认为是增强分子穿过皮肤屏障的最有效方法。本研究旨在系统地研究增强酒石酸美托洛尔经皮传递和随后在皮肤中释放药物库的方法。制备了具有相近粘度的凝胶制剂,并评估了聚合物(卡波姆、羟丙基甲基纤维素和甲基纤维素)、渗透增强剂(5%w/w,月桂基硫酸钠(SLS)、二甲基甲酰胺、N-甲基-2-吡咯烷酮和聚乙二醇 400)以及联合方法(渗透增强剂联合离子导入-在药物输送时施加 0.5 mA/cm²电流)对药物释放的影响。在被动(4.59-5.89μg/cm²/h)和离子导入(37.99-41.57μg/cm²/h)过程中观察到的通量值表明,在相似条件下,所研究的聚合物不会影响美托洛尔的渗透,进一步的研究使用卡波姆凝胶作为代表性聚合物进行。在被动过程中,SLS 可显著增强药物传递(约 5 倍),而最佳离子导入输送条件可确保更好的输送(约 7 倍)。离子导入与 SLS 的联合进一步增强了药物传递(约 9 倍),并导致药物在皮肤中的保留明显增加。此外,皮肤中的药物在一段时间(5 天)内逐渐释放,并遵循近似一级动力学曲线。本研究表明,离子导入联合 SLS 增强了美托洛尔的传递,并在皮肤中形成了药物储存库,最终在一段时间内释放。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索