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Fluid mechanics of the zebrafish embryonic heart trabeculation
Embryonic heart development is a mechanosensitive process, where specific fluid forces are needed for the correct development, and abnormal mechanical stimuli can lead to malformations. It is thus important to understand the nature of embryonic heart fluid forces. However, the fluid dynamical behavi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203006/ https://www.ncbi.nlm.nih.gov/pubmed/35666714 http://dx.doi.org/10.1371/journal.pcbi.1010142 |
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author | Cairelli, Adriana Gaia Chow, Renee Wei-Yan Vermot, Julien Yap, Choon Hwai |
author_facet | Cairelli, Adriana Gaia Chow, Renee Wei-Yan Vermot, Julien Yap, Choon Hwai |
author_sort | Cairelli, Adriana Gaia |
collection | PubMed |
description | Embryonic heart development is a mechanosensitive process, where specific fluid forces are needed for the correct development, and abnormal mechanical stimuli can lead to malformations. It is thus important to understand the nature of embryonic heart fluid forces. However, the fluid dynamical behaviour close to the embryonic endocardial surface is very sensitive to the geometry and motion dynamics of fine-scale cardiac trabecular surface structures. Here, we conducted image-based computational fluid dynamics (CFD) simulations to quantify the fluid mechanics associated with the zebrafish embryonic heart trabeculae. To capture trabecular geometric and motion details, we used a fish line that expresses fluorescence at the endocardial cell membrane, and high resolution 3D confocal microscopy. Our endocardial wall shear stress (WSS) results were found to exceed those reported in existing literature, which were estimated using myocardial rather than endocardial boundaries. By conducting simulations of single intra-trabecular spaces under varied scenarios, where the translational or deformational motions (caused by contraction) were removed, we found that a squeeze flow effect was responsible for most of the WSS magnitude in the intra-trabecular spaces, rather than the shear interaction with the flow in the main ventricular chamber. We found that trabecular structures were responsible for the high spatial variability of the magnitude and oscillatory nature of WSS, and for reducing the endocardial deformational burden. We further found cells attached to the endocardium within the intra-trabecular spaces, which were likely embryonic hemogenic cells, whose presence increased endocardial WSS. Overall, our results suggested that a complex multi-component consideration of both anatomic features and motion dynamics were needed to quantify the trabeculated embryonic heart fluid mechanics. |
format | Online Article Text |
id | pubmed-9203006 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-92030062022-06-17 Fluid mechanics of the zebrafish embryonic heart trabeculation Cairelli, Adriana Gaia Chow, Renee Wei-Yan Vermot, Julien Yap, Choon Hwai PLoS Comput Biol Research Article Embryonic heart development is a mechanosensitive process, where specific fluid forces are needed for the correct development, and abnormal mechanical stimuli can lead to malformations. It is thus important to understand the nature of embryonic heart fluid forces. However, the fluid dynamical behaviour close to the embryonic endocardial surface is very sensitive to the geometry and motion dynamics of fine-scale cardiac trabecular surface structures. Here, we conducted image-based computational fluid dynamics (CFD) simulations to quantify the fluid mechanics associated with the zebrafish embryonic heart trabeculae. To capture trabecular geometric and motion details, we used a fish line that expresses fluorescence at the endocardial cell membrane, and high resolution 3D confocal microscopy. Our endocardial wall shear stress (WSS) results were found to exceed those reported in existing literature, which were estimated using myocardial rather than endocardial boundaries. By conducting simulations of single intra-trabecular spaces under varied scenarios, where the translational or deformational motions (caused by contraction) were removed, we found that a squeeze flow effect was responsible for most of the WSS magnitude in the intra-trabecular spaces, rather than the shear interaction with the flow in the main ventricular chamber. We found that trabecular structures were responsible for the high spatial variability of the magnitude and oscillatory nature of WSS, and for reducing the endocardial deformational burden. We further found cells attached to the endocardium within the intra-trabecular spaces, which were likely embryonic hemogenic cells, whose presence increased endocardial WSS. Overall, our results suggested that a complex multi-component consideration of both anatomic features and motion dynamics were needed to quantify the trabeculated embryonic heart fluid mechanics. Public Library of Science 2022-06-06 /pmc/articles/PMC9203006/ /pubmed/35666714 http://dx.doi.org/10.1371/journal.pcbi.1010142 Text en © 2022 Cairelli et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Cairelli, Adriana Gaia Chow, Renee Wei-Yan Vermot, Julien Yap, Choon Hwai Fluid mechanics of the zebrafish embryonic heart trabeculation |
title | Fluid mechanics of the zebrafish embryonic heart trabeculation |
title_full | Fluid mechanics of the zebrafish embryonic heart trabeculation |
title_fullStr | Fluid mechanics of the zebrafish embryonic heart trabeculation |
title_full_unstemmed | Fluid mechanics of the zebrafish embryonic heart trabeculation |
title_short | Fluid mechanics of the zebrafish embryonic heart trabeculation |
title_sort | fluid mechanics of the zebrafish embryonic heart trabeculation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203006/ https://www.ncbi.nlm.nih.gov/pubmed/35666714 http://dx.doi.org/10.1371/journal.pcbi.1010142 |
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