Structure and elasticity of bush and brush-like models of the endothelial glycocalyx.
Structure and elasticity of bush and brush-like models of the endothelial glycocalyx.
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DOI:
10.1038/s41598-017-18577-3
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发表时间:
2018-01-10
影响因子:
4.6
通讯作者:
Lobaskin V
中科院分区:
文献类型:
--
作者:
Kabedev A;Lobaskin V
The endothelial glycocalyx (EG), a sugar-rich layer that lines the luminal surface of blood vessels, is an important constituent of the vascular system. Although the chemical composition of the EG is fairly well known, there is no consensus regarding its ultrastructure. While previous experiments probed the properties of the layer at the continuum level, they did not provide sufficient insight into its molecular organisation. In this work, we investigate the EG mechanics using two simple brush and bush-like simulation models, and use these models to describe its molecular structure and elastic response to indentation. We analyse the relationship between the mechanical properties of the EG layer and several molecular parameters, including the filament bending rigidity, grafting density, and the type of ultrastructure . We show that variations in the glycan density determine the elasticity of the EG for small deformations, and that the normal stress may be effectively dampened by the EG layer, preventing the stress from being transferred to the cell membrane. Furthermore, our bush-like model allows us to evaluate the forces and energies required to overcome the mechanical resistance of the EG.
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影响因子:
3.4
作者:
Damiano, ER;Stace, TM
通讯作者:
Stace, TM
影响因子:
4.5
作者:
Reitsma, Sietze;Slaaf, Dick W.;Vink, Hans;van Zandvoort, Marc A. M. J.;Egbrink, Mirjam G. A. oude
通讯作者:
Egbrink, Mirjam G. A. oude
影响因子:
3.7
作者:
Agrawal, Neeraj J.;Radhakrishnan, Ravi
通讯作者:
Radhakrishnan, Ravi
DOI:
10.1083/jcb.200106075
发表时间:
2001-11-26
期刊:
The Journal of cell biology
影响因子:
--
作者:
Allen BL;Filla MS;Rapraeger AC
通讯作者:
Rapraeger AC
影响因子:
5.5
作者:
CHAKRABARTI, A;TORAL, R
通讯作者:
TORAL, R