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Drug delivery methods like oral inhalation, nasal sprays, transdermal patches, eye drops, intravitreal injection, and rectal administration provide localized effects with reduced toxicity.
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Systemic and Local Drug Delivery for Treating Diseases of the Central Nervous System in Rodent Models

Systemic and Local Drug Delivery for Treating Diseases of the Central Nervous System in Rodent Models

Published on: August 16, 2010

Local drug delivery.

Richard J Harvey¹, Rodney J Schlosser

¹Rhinology and Skull Base Surgery, Department of Otolaryngology/Skull Base Surgery, St Vincent's Hospital, 354 Victoria Street, Darlinghurst, Sydney, NSW 2010, Australia. richard@sydneyentclinic.com

Otolaryngologic Clinics of North America

|November 14, 2009

Summary

Effective topical drug delivery for sinonasal disorders requires optimizing both anatomical distribution and local microenvironment factors for better sinonasal therapy outcomes.

Area of Science:

Otolaryngology
Pharmaceutical Sciences
Biomedical Engineering

Background:

Topical drug delivery to the sinonasal system faces challenges due to anatomical complexity and local physiological factors.
Understanding these factors is crucial for effective treatment of sinonasal disorders.

Purpose of the Study:

To review the key factors influencing topical drug distribution and absorption within the sinonasal system.
To discuss the interplay between mechanical clearance and pharmaceutical intervention in sinonasal therapy.

Main Methods:

Review of existing literature on sinonasal drug delivery mechanisms.
Analysis of anatomical, physiological, and pharmaceutical factors affecting topical therapy efficacy.

Main Results:

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Anatomical factors like delivery technique, surgical status, device, and fluid dynamics significantly impact drug reach.
Local microenvironment factors including mucus, mucociliary clearance, and drug-mucin binding affect absorption.
Potential conflict exists between mechanical lavage and optimal pharmaceutical delivery.

Conclusions:

Optimizing topical drug delivery for sinonasal disorders necessitates a comprehensive approach considering both macroscopic distribution and microscopic absorption.
Future strategies should aim to enhance drug penetration and retention within the sinonasal mucosa.