Abstract
Patchouli oil has exhibited remarkable efficacy in the treatment of colitis. However, its volatility and potential irritancy are often drawbacks when extensively used in clinical applications. Oil gel is a semisolid and thermoreversible system that has received extensive interest for its solubility enhancement, inhibition of bioactive component recrystallization, and the facilitation of controlled bioactive release. Therefore, we present a strategy to develop an oil gel formulation that addresses this multifaceted problem. Notably, a patchouli oil gel formulation was designed to solidify and trap patchouli oil into a spatially stable crystal-particle structure and colonic released delivery, which has an advantage of the stable structure and viscosity. The patchouli oil gel treatment of zebrafish with colitis improved goblet cells and decreased macrophages. Additionally, patchouli oil gel showed superior advantages for restoring the tissue barrier. Furthermore, our investigative efforts unveiled patchouli oil's influence on TRP channels, providing evidence for its potential role in mechanisms of anti-inflammatory action. While the journey continues, these preliminary revelations provide a robust foundation for considering the adoption of patchouli oil gel as a pragmatic intervention for managing colitis.
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