第二代脂质纳米粒(NLC)作为盐酸乐卡地平的口服药物载体。

Second generation lipid nanoparticles (NLC) as an oral drug carrier for delivery of lercanidipine hydrochloride.

机构信息

Sinhgad College of Pharmacy, Vadgaon (Bk.), Pune 411 041, Maharashtra, India.

Sinhgad College of Pharmacy, Vadgaon (Bk.), Pune 411 041, Maharashtra, India.

出版信息

Colloids Surf B Biointerfaces. 2014 Apr 1;116:81-7. doi: 10.1016/j.colsurfb.2013.12.012. Epub 2013 Dec 30.

Abstract

Lercanidipine hydrochloride is a calcium channel blocker used in the treatment of hypertension. It is a poor water soluble drug with absolute bioavailability of 10%. The aim of this study was to design lercanidipine hydrochloride-loaded nanostructured lipid carriers to investigate whether the bioavailability of the same can be improved by oral delivery. Lercanidipine hydrochloride nanostructured lipid carriers were prepared by the method of solvent evaporation at a high temperature and solidification by freeze drying. The nanostructured lipid carriers were evaluated for particle size analysis, zeta potential, entrapment efficiency, in vitro drug diffusion, ex vivo permeation studies and pharmacodynamic study. The resultant nanostructured lipid carriers had a mean size of 214.97 nm and a zeta potential of -31.6 ± 1.5 mV. More than 70% lercanidipine hydrochloride was entrapped in the NLCs. The SEM studies indicated the formation of type 2 nanostructured lipid carriers. The in vitro release studies demonstrated 19.36% release in acidic buffer pH 1.2 indicating that the drug entrapped in the nanostructured lipid carriers remains entrapped at acidic pH. The ex vivo studies indicated that the drug release was enhanced from 10% to 60.54% at blood pH in 24h. The in vivo pharmacodynamic study showed that NLCs released lercanidipine hydrochloride in a controlled manner for a prolonged period of time as compared to plain drug. These results clearly indicate that nanostructured lipid carriers are a potential controlled release formulation for lercanidipine hydrochloride and may be a promising drug delivery system for the treatment of hypertension.

摘要

盐酸乐卡地平是一种用于治疗高血压的钙通道阻滞剂。它是一种水溶性差的药物,绝对生物利用度为 10%。本研究旨在设计盐酸乐卡地平纳米结构脂质载体,以考察通过口服给药是否可以提高其生物利用度。盐酸乐卡地平纳米结构脂质载体通过高温溶剂蒸发法和冷冻干燥法制备。对纳米结构脂质载体进行粒径分析、zeta 电位、包封效率、体外药物扩散、离体渗透研究和药效学研究。所得纳米结构脂质载体的平均粒径为 214.97nm,zeta 电位为-31.6±1.5mV。超过 70%的盐酸乐卡地平被包封在 NLCs 中。SEM 研究表明形成了 2 型纳米结构脂质载体。体外释放研究表明,在酸性缓冲液 pH1.2 中释放 19.36%,表明包封在纳米结构脂质载体中的药物在酸性 pH 值下仍保持包封状态。离体研究表明,在 24 小时内,药物在血液 pH 值下从 10%释放增加到 60.54%。体内药效学研究表明,与普通药物相比,NLCs 以受控方式延长时间释放盐酸乐卡地平。这些结果清楚地表明,纳米结构脂质载体是盐酸乐卡地平的一种潜在控释制剂,可能是治疗高血压的一种有前途的药物传递系统。

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