Enhancement of bioavailability and anti-inflammatory activity of inotodiol through complexation with -cyclodextrin
Journal of Drug Delivery Science and Technology(2024)
摘要
The aims of the present study were to fabricate an inclusion complex of inotodiol (INO) with cyclodextrin (CD) and to evaluate its bioavailability and anti-inflammatory activity. Different types of cyclodextrins in DDW were employed as host molecules, and INO dissolved in ethanol was added to the CD solutions during ultra-sonication. DSC and FTIR results showed that INO was complexed only with gamma-cyclodextrin (gamma-CD) efficiently at a molar ratio of 1:3 (INO1/gamma-CD3). Large mean particle size (261.4 nm), high polydispersity index (0.497), and bimodal size distribution of INO1/gamma-CD3 resulted from the formation of large aggregates after the inclusion complex formation. Following oral administration at the dose of 1.0 mg/kg for INO1/gamma-CD3 group and the 2.0 mg/kg for INO group in mouse, the maximum inotodiol plasma concentration (C-max) and the relative area under curve (AUC per 1 mg/kg dose) were 2.6- and 4.96-fold higher, respectively, in the INO1/gamma-CD3 group than in the INO group. Anti-inflammatory activity analysis of INO was conducted using RAW264.7 cells stimulated by lipopolysaccharide, and the repression effect of INO on pro-inflammatory cytokines was enhanced by the complexation with gamma-CD. Our findings suggest that INO1/gamma-CD3 can be a potent therapeutic formulation for the treatment of inflammatory diseases.
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关键词
Inotodiol,gamma-Cyclodextrin,Inclusion complex,Bioavailability,Anti-inflammation
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