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Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear

In the field of cochlear implantation, artificial/physical models of the inner ear are often employed to investigate certain phenomena like the forces occurring during implant insertions. Up to now, no such models are available for the analysis of diffusion processes inside the cochlea although drug...

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Autores principales: Schurzig, Daniel, Fröhlich, Max, Raggl, Stefan, Scheper, Verena, Lenarz, Thomas, Rau, Thomas S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8143569/
https://www.ncbi.nlm.nih.gov/pubmed/33919445
http://dx.doi.org/10.3390/life11050373
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author Schurzig, Daniel
Fröhlich, Max
Raggl, Stefan
Scheper, Verena
Lenarz, Thomas
Rau, Thomas S.
author_facet Schurzig, Daniel
Fröhlich, Max
Raggl, Stefan
Scheper, Verena
Lenarz, Thomas
Rau, Thomas S.
author_sort Schurzig, Daniel
collection PubMed
description In the field of cochlear implantation, artificial/physical models of the inner ear are often employed to investigate certain phenomena like the forces occurring during implant insertions. Up to now, no such models are available for the analysis of diffusion processes inside the cochlea although drug delivery is playing an increasingly important role in this field. For easy access of the cochlea along its whole profile, e.g., for sequential sampling in an experimental setting, such a model should ideally be longitudinal/uncoiled. Within this study, a set of 15 micro-CT imaging datasets of human cochleae was used to derive an average representation of the scala tympani. The spiral profile of this model was then uncoiled along different trajectories, showing that these trajectories influence both length and volume of the resulting longitudinal model. A volumetric analysis of the average spiral model was conducted to derive volume-to-length interrelations for the different trajectories, which were then used to generate two tubular, longitudinal scala tympani models with volume and length properties matching the original, spiral profile. These models can be downloaded for free and used for reproducible and comparable simulative and experimental investigations of diffusion processes within the inner ear.
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spelling pubmed-81435692021-05-25 Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear Schurzig, Daniel Fröhlich, Max Raggl, Stefan Scheper, Verena Lenarz, Thomas Rau, Thomas S. Life (Basel) Article In the field of cochlear implantation, artificial/physical models of the inner ear are often employed to investigate certain phenomena like the forces occurring during implant insertions. Up to now, no such models are available for the analysis of diffusion processes inside the cochlea although drug delivery is playing an increasingly important role in this field. For easy access of the cochlea along its whole profile, e.g., for sequential sampling in an experimental setting, such a model should ideally be longitudinal/uncoiled. Within this study, a set of 15 micro-CT imaging datasets of human cochleae was used to derive an average representation of the scala tympani. The spiral profile of this model was then uncoiled along different trajectories, showing that these trajectories influence both length and volume of the resulting longitudinal model. A volumetric analysis of the average spiral model was conducted to derive volume-to-length interrelations for the different trajectories, which were then used to generate two tubular, longitudinal scala tympani models with volume and length properties matching the original, spiral profile. These models can be downloaded for free and used for reproducible and comparable simulative and experimental investigations of diffusion processes within the inner ear. MDPI 2021-04-21 /pmc/articles/PMC8143569/ /pubmed/33919445 http://dx.doi.org/10.3390/life11050373 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Schurzig, Daniel
Fröhlich, Max
Raggl, Stefan
Scheper, Verena
Lenarz, Thomas
Rau, Thomas S.
Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title_full Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title_fullStr Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title_full_unstemmed Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title_short Uncoiling the Human Cochlea—Physical Scala Tympani Models to Study Pharmacokinetics Inside the Inner Ear
title_sort uncoiling the human cochlea—physical scala tympani models to study pharmacokinetics inside the inner ear
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8143569/
https://www.ncbi.nlm.nih.gov/pubmed/33919445
http://dx.doi.org/10.3390/life11050373
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