Abstract
AbstractVanillic acid (VA) is a phenolic compound with potential antioxidant activity, which improves ischemia-induced myocardial degeneration, by reducing oxidative stress; however, it suffers poor bioavailability owing to its poor solubility. VA-loaded pharmacosomes were optimized using a central composite design, where the effect of phosphatidylcholine:VA molar ratio and the precursor concentration were studied. An optimized formulation (O1) was prepared and tested for the release rate of VA, in vivo bioavailability, and cardioprotective potential on myocardial infarction-induced rats. The optimized formulation showed a particle size of 229.7 nm, polydispersity index of 0.29, and zeta potential of − 30 mV. O1 showed a sustained drug release for 48 h. The HPLC–UV method was developed for the determination of VA in plasma samples using protein precipitation. The optimized formulation showed a great improvement in the bioavailability as compared to VA. The residence time of the optimized formula was 3 times longer than VA. The optimized formulation showed a more potent cardioprotective effect as compared to VA, via inhibition of the MAPK pathway with subsequent inhibition of PI3k/NF-κB signaling, in addition to its antioxidant effect. The optimized formulation showed normalization of many oxidative stress and inflammatory biomarkers. Thus, a VA-loaded pharmacosome formulation with promising bioavailability and cardioprotective activity potential was prepared.
Graphical Abstract
Funder
October University for Modern Sciences and Arts
Publisher
Springer Science and Business Media LLC
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