[Preparation of 20(S)-Protopanaxadiol-Phospholipid Complex HAP Assemblies]

Area of Science:

• Materials Science
• Pharmaceutical Sciences
• Drug Delivery

Background:

• 20(S)-protopanaxadiol (20(S)-PPD) is a compound with potential therapeutic applications.
• Developing effective drug delivery systems is crucial for optimizing the efficacy of compounds like 20(S)-PPD.
• Hydrophilic-lipophilic balance (HLB) systems are explored for drug encapsulation and controlled release.

Purpose of the Study:

• To prepare and characterize 20(S)-protopanaxadiol-phospholipid (20(S)-PPD) complex HAP assemblies.
• To investigate the factors influencing the assembly process.
• To evaluate the drug loading, adsorption mechanism, and release profile of the prepared assemblies.

Main Methods:

• Assembly of 20(S)-PPD phospholipid complex with hydroxyapatite (HAP) drug carriers.
• Investigation of technological factors: HAP species, phospholipid complex concentration, and HAP/liquid ratio.
• Characterization using Fourier Transform Infrared Spectroscopy (FT-IR) and in vitro drug release studies.

Main Results:

• Optimized preparation technology yielded 20(S)-PPD phospholipid complex HAP assemblies with an average quality of 136.26 mg/g and an assembly rate of 5.3%.
• FT-IR analysis confirmed the adsorption of 20(S)-PPD phospholipid complex onto HAP assemblies, primarily through hydrogen bonding.
• In vitro release studies in pH 7.4 phosphate buffer demonstrated a sustained release effect.

Conclusions:

• The developed 20(S)-PPD phospholipid complex HAP assemblies offer a simple preparation process.
• These assemblies exhibit significant sustained release capabilities.
• This research provides a foundational basis for the development of 20(S)-PPD sustained-release drug formulations.