Engineering Inhalable Therapeutic Particles: Conventional and Emerging Approaches

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Biomedical Engineering

Background:

• Effective delivery of inhaled therapeutics relies on respirable particles with precise physicochemical properties.
• Particle characteristics significantly influence aerodynamic performance, lung deposition, and overall therapeutic efficacy of dry powder formulations.

Purpose of the Study:

• To review physicochemical properties impacting dry powder inhaler performance.
• To present advances in particle preparation techniques for optimizing therapeutic outcomes.
• To highlight futuristic particle engineering approaches and their potential challenges.

Main Methods:

• Review of physicochemical properties relevant to particle engineering.
• Analysis of top-down and bottom-up particle preparation techniques.
• Exploration of emerging technologies like electrospraying, inkjet printing, thin film freeze drying, and supercritical processes.

Main Results:

• Physicochemical properties are critical determinants of aerodynamic performance and therapeutic efficacy.
• Particle engineering strategies have evolved significantly over the past century, with recent innovations.
• Novel techniques offer enhanced control over particle properties for improved drug delivery.

Conclusions:

• Advanced particle engineering is key to optimizing inhaled therapeutic ingredient delivery.
• Futuristic approaches hold significant promise for reshaping drug delivery and improving patient outcomes.
• Continued innovation in particle engineering can enhance quality of life for patients with respiratory and other diseases.