Nanohybrids for controlled antibiotic release in topical applications

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Chemistry
• Drug Delivery Systems

Background:

• Development of advanced materials for controlled drug release is crucial for therapeutic efficacy.
• Polymeric composites offer versatile platforms for drug incorporation and delivery.
• Layered double hydroxides (LDHs) are effective matrices for anion exchange and drug loading.

Purpose of the Study:

• To formulate and characterize novel polymeric composite materials for controlled release of chloramphenicol succinate.
• To investigate the incorporation of a Mg-Al hydrotalcite nanohybrid into polycaprolactone for enhanced properties.
• To evaluate the drug release kinetics and influencing parameters of the developed composite films.

Main Methods:

• Synthesis of a Mg-Al hydrotalcite nanohybrid via ion-exchange with chloramphenicol succinate anions.
• Incorporation of varying amounts of the nanohybrid into a polycaprolactone matrix.
• Characterization using X-ray diffractometry, thermogravimetry, and mechanical property analysis.
• In vitro drug release studies to determine release profiles and kinetics.

Main Results:

• The developed composite films exhibited improved mechanical properties compared to the pristine polymer.
• The nanohybrid incorporation resulted in a two-stage drug release profile: a rapid initial burst followed by a prolonged slow release.
• The release rate from the nanohybrid composite was significantly slower and more controlled than direct drug incorporation into the polymer.

Conclusions:

• Polymeric composites containing Mg-Al hydrotalcite nanohybrids are promising for tuneable, controlled antibiotic delivery.
• The ion-exchange method effectively loads chloramphenicol succinate into the nanohybrid galleries.
• The observed two-stage release mechanism offers potential for sustained therapeutic drug levels and improved treatment outcomes.