Nose-to-Brain Delivery

Area of Science:

• Pharmacology
• Neuroscience
• Drug Delivery Systems

Background:

• Rising global prevalence of neurologic disorders presents a significant unmet medical need.
• The blood-brain barrier (BBB) severely restricts therapeutic drug entry into the brain.
• Current drug delivery methods face challenges in achieving therapeutic concentrations in the brain.

Purpose of the Study:

• To explore the potential of the nose-to-brain drug delivery route.
• To identify key factors influencing the efficacy of nasal drug administration for brain targeting.
• To highlight potential therapeutic applications and future directions for this delivery method.

Main Methods:

• Review of preclinical and human studies on nose-to-brain drug delivery.
• Analysis of formulation types (solutions and particulates) for nasal administration.
• Identification of critical parameters for successful nose-to-brain transport.

Main Results:

• The nose-to-brain route has been validated in both animal models and human studies.
• Successful delivery depends on targeting the olfactory region, prolonging nasal retention, and enhancing penetration.
• Device manufacturers' involvement is crucial for product development.

Conclusions:

• Nose-to-brain delivery offers a promising strategy to overcome the BBB.
• Optimizing nasal delivery parameters is key to successful therapeutic outcomes.
• Potential applications include neurodegenerative diseases, PTSD, pain, and glioblastoma.