ArticleOtology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology2018
A Polymer-Based Extended Release System for Stable, Long-term Intracochlear Drug Delivery.
Article in Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The trial behind it
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Who cites it
5 citing papers in PubMed.
- Otic Drug Delivery Systems: Current and Future Perspectives.Current pharmaceutical design · 2026Review
- Microimaging of a novel intracochlear drug delivery device in combination with cochlear implants in the human inner ear.Drug delivery and translational research · 2022Article
- Safety and audiological outcome in a case series of tertiary therapy of sudden hearing loss with a biodegradable drug delivery implant for controlled release of dexamethasone to the inner ear.Frontiers in neuroscience · 2022Article
- Inner ear delivery: Challenges and opportunities.Laryngoscope investigative otolaryngology · 2020Review
- Prevention of cisplatin-induced hearing loss by extended release fluticasone propionate intracochlear implants.International journal of pediatric otorhinolaryngology · 2019Article
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
objectiveInvestigate a new polymer-based drug coating suitability for safe intracochlear delivery and ability to maintain long-term physiologically active levels of the corticosteroid fluticasone propionate. STUDY
designIn vitro dissolution study to evaluate release profiles of polymer-coated drug particles and in vivo studies using a guinea pig model to measure perilymph drug concentrations at specific time points after implantation with polymer-coated drug particles and evaluate their effect on hearing function.
methodsPolymer-coated fluticasone propionate (FP) particles were surgically implanted in guinea pigs through the round window membrane into the cochlear scala tympani. In the pilot study, pre- and post-op hearing thresholds were conducted on days 7, 14, and 42. In a second study, post-op hearing thresholds were conducted on days 90, 120, and 180. Perilymph drug concentrations were measured on the same time points.
resultsIn 15 of 16 animals from day 7 through day 90, drug levels were within the targeted range, with no initial burst release detected. Drug was present in all animals on day 90 and was detected in some animals at 120 and 180 days. Hearing was tested and compared with non-implanted ears. Very good hearing preservation was observed in ears implanted with intracochlear particles when compared with contralateral ears.
conclusionsThe polymer-based extended release system is effective in providing long-term, stable drug delivery for at least 90 days with good hearing outcomes. The results of this study support the potential for achieving long-term drug delivery with a single intracochlear administration.
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Registered trials
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