Title:Treating Sensorineural Hearing Loss: Recent Advances in Inner Ear Drug
Delivery
Volume: 13
Issue: 3
Author(s): Dolly N. Vachheta, Yamini Dushyant Shah, Mansi Ninaad Athalye*, Drashty Kumarbhai Kakkad and Mansi Jitenderabhai Darji
Affiliation:
- L.M. College of Pharmacy, Opposite Gujarat University, Navrangpura, Ahmedabad, Gujarat-380009, India
Keywords:
Sensorineural Hearing Loss (SNHL), Round window membrane (RWM), Oval window (OW), Blood-labyrinth barrier (BLB), intracochlear system, intratympanic system, vestibular and auditory diseases, autoimmune disorders.
Abstract: This review aims to provide historical, present, and future drug deliveries for treating inner
ear disorders. Systemic delivery, such as antibiotics and steroids for the inner ear, was the basis
on which current drug delivery systems and devices have been researched and developed. Researchers
and clinicians had to develop and deliver drugs locally due to adverse effects caused by
drugs systemically. Intratympanic method of antibiotics and steroid delivery has been common;
however, newer techniques such as microcatheter implantation, hydrogels, nanoparticles, and intracochlear
implants are being investigated successfully. Recently advances in microfluidic and microsystems
technology have applied medications directly into the inner ear. This technology will
also be adopted to deliver gene therapy, RNA interference technology, and stem cell therapy by clinicians
in the future.