The inclusion of cholesterol increases the structural integrity and fluidity of the lipid bilayer, allowing these liposomes to be stable in the bloodstream and capable of controlled release of encapsulated agents.
They are typically manufactured using the thin-film hydration method followed by sonication or extrusion, which ensures a uniform and reproducible liposome size and morphology.
Cholesterol modulates the fluidity and permeability of the liposome bilayer, enhancing its stability and the encapsulation efficiency of therapeutic agents. This addition also helps in preventing the aggregation of liposomes in the bloodstream, improving circulation time and bio-distribution.
Yes, these liposomes can be conjugated with targeting moieties such as antibodies, peptides, or small molecules on their surface. This modification allows them to specifically bind to and be taken up by target cells or tissues, thereby increasing the efficacy and reducing the side effects of the loaded drugs.
Effects of OA and Lipo-OAs on ALT, AST, and GGT levels in the mice with PM2.5 or PM2.5- and alcohol-induced inflammation in the liver.
This study explored the potential benefits of oleanolic acid liposomes (Lipo-OAs) in treating hepatitis induced by alcohol and fine particulate matter (PM2.5). The researchers utilized the evaporation sonication method to formulate Lipo-OAs from DSPC, cholesterol, and oleanolic acid (OA). Afterward, they examined the impact of OA and Lipo-OAs on liver function parameters, including ALT, AST, and GGT, in the presence of PM2.5 and alcohol or PM2.5 alone. The results revealed significantly elevated levels of ALT, AST, and GGT in the inflamed livers induced by PM2.5 and alcohol, or PM2.5 alone, compared to healthy livers. Following treatment with OA or Lipo-OAs, these enzyme levels were markedly reduced, with Lipo-OAs showing a stronger inhibitory effect. This study underscores the potential anti-inflammatory and reparative effects of Lipo-OAs for the treatment of PM2.5 and alcohol-induced liver injury, suggesting a promising avenue for further research and potential clinical applications.
Wei, Ching-Ting, et al. "Reparative efficacy of liposome-encapsulated oleanolic acid against liver inflammation induced by fine ambient particulate matter and alcohol in mice." Pharmaceutics 14.5 (2022): 1108. Under Open Access license CC BY 4.0, without modification.
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