ArticleBiomedicines2022
Olfactory Drug Aerosol Delivery with Acoustic Radiation.
Article in Biomedicines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Assessing Nasal Epithelial Dynamics: Impact of the Natural Nasal Cycle on Intranasal Spray Deposition.Pharmaceuticals (Basel, Switzerland) · 2024Article
- Challenges in the Development and Application of Organ-on-Chips for Intranasal Drug Delivery Studies.Pharmaceutics · 2023Review
- Nasal anatomy and sniffing in respiration and olfaction of wild and domestic animals.Frontiers in veterinary science · 2023Review
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nose-to-brain (N2B) drug delivery is a new approach to neurological disorder therapy as medications can bypass the blood-brain barrier and directly enter the brain. However, the delivery efficiency to the olfactory region using the conventional delivery method is impractically low because of the region's secluded position in a convoluted nasal cavity. In this study, the acoustic radiation force was explored as an N2B delivery alternative in a wide frequency range of 10-100,000 Hz at an increment of 50 Hz. Numerical simulations of the particle deposition in the olfactory region of four nasal configurations were performed using COMSOL. Frequency analysis of the nasal cavities revealed that eigenfrequencies were often associated with a specific region with narrow passages and some eigenfrequencies exhibited an amendable pressure field to the olfactory region. Transient particle tracking was conducted with an acoustic inlet at 1 Pa, and a frequency spectrum of 10-100,000 Hz was imposed on the airflow, which carried the particles with acoustic radiation forces. It was observed that by increasing the pulsating wave frequency at the nostrils, the olfactory delivery efficiency reached a maximum in the range 11-15 kHz and decreased after that. The correlation of the olfactory delivery efficiency and instantaneous values of other parameters such as acoustic velocity and pressure in the frequency domain was examined.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.