phytosterols
Phytosterols are steroid compounds found in plant cell membranes that serve a structural role analogous to cholesterol in animals, helping regulate membrane fluidity and integrity. With over 250 identified variants, they are essential to understanding how plants maintain cellular architecture and respond to environmental stress. Research into phytosterols also has implications for plant development, signaling pathways, and the biosynthesis of other biologically active compounds.
open_in_new WikipediaPubMed · 2026-04-15
A plant compound called beta-sitosterol, found naturally in many common foods and plants, was packaged into tiny nanoparticles to dramatically improve its ability to reduce inflammation in rats with arthritis. The new delivery system boosted absorption nearly four times over the standard form, suggesting plant sterols could become more effective medicines with the right formulation.
Nanoparticle-encapsulated beta-sitosterol increased oral bioavailability by 3.8-fold compared to a conventional suspension (p < 0.05)
Optimized leciplex nanocarriers averaged ~146 nm in size with 66% entrapment efficiency and sustained drug release
Treatment significantly reduced inflammatory markers (TNF-α, IL-6), improved oxidative stress indicators (GSH, SOD, MDA), and modulated three key inflammatory signaling pathways (JAK2/STAT3, NF-κB, p38 MAPK) in arthritic rats