Nanoparticle formulation for controlled release of capsaicin

Seon Kim, Jong Chul Kim, Donggeun Sul, Sun Wook Hwang, Sang Heon Lee, Young Ha Kim, Giyoong Tae

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)

    Abstract

    Capsaicin might be an effective pharmacological agent for the treatment of discogenic back pain due to its effect on pain control neuronal degeneration. Therefore, capsaicin-loaded nano-and micro-particles for sustained release were formulated by nano-precipitation or oil-in-water single emulsion solvent evaporation/extraction method. First, the capsaicin-loaded PLGA nanoparticles were prepared by nano-precipitation method. By increasing the volume of oil-water ratio from 1:2 to 1:5, slight changes in size from 162±3 nm to 153±3 nm and in drug loading efficiency from 25% to 20% were observed, whereas the drug release period was significantly changed from 11 days for 1:2 to 5 days for 1:5 ratio. To get a more sustained release, a modified single emulsion method was applied with three kinds of biocompatible polymers (PLLA, PLGA, and PCL). Among them, PLLA particles showed a much sustained release profile than PLGA or PCL ones with the similar size. For PLLA particles, particles size and drug encapsulation efficiency increased as the oil/water ratio decreased, and the bigger particles showed the slower release profiles as well as the higher drugloading efficiency, thus about 1 month release was obtained with 800 nm particles. In conclusion, formulation for the controlled release of capsaicin from 1 week to 1 month was prepared by using biocompatible nanoparticles.

    Original languageEnglish
    Pages (from-to)4586-4591
    Number of pages6
    JournalJournal of Nanoscience and Nanotechnology
    Volume11
    Issue number5
    DOIs
    Publication statusPublished - 2011 May

    Keywords

    • Capsaicin
    • Controlled release
    • Nanoparticle
    • PLLA

    ASJC Scopus subject areas

    • Bioengineering
    • General Chemistry
    • Biomedical Engineering
    • General Materials Science
    • Condensed Matter Physics

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