Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach

Existent literature has limitations regarding the mechanical behavior of axonal cytoskeletal components in a high strain rate scenario, which is mainly due to limitations regarding the structure of some components such as tau protein and neurofilaments (NF). This study performs molecular dynamics (M...

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Main Authors: Md Ishak Khan, Fuad Hasan, Khandakar Abu Hasan Al Mahmud, Ashfaq Adnan
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Biomolecules
Subjects:
Online Access:https://www.mdpi.com/2218-273X/11/4/540
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author Md Ishak Khan
Fuad Hasan
Khandakar Abu Hasan Al Mahmud
Ashfaq Adnan
author_facet Md Ishak Khan
Fuad Hasan
Khandakar Abu Hasan Al Mahmud
Ashfaq Adnan
author_sort Md Ishak Khan
collection DOAJ
description Existent literature has limitations regarding the mechanical behavior of axonal cytoskeletal components in a high strain rate scenario, which is mainly due to limitations regarding the structure of some components such as tau protein and neurofilaments (NF). This study performs molecular dynamics (MD) simulations on NFs to extract their strain rate-dependent behavior. It is found that they are highly stretchable and show multiple stages of unfolding. Furthermore, NFs show high tensile stiffness. Also, viscoelastic modeling shows that they correspond to simplified viscoelastic models. This study effectively enhances the existent axonal models focusing on axonal injury.
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spelling doaj.art-9294829af8044119b6893c3fef4dcd662023-11-21T14:31:31ZengMDPI AGBiomolecules2218-273X2021-04-0111454010.3390/biom11040540Viscoelastic Response of Neurofilaments: An Atomistic Simulation ApproachMd Ishak Khan0Fuad Hasan1Khandakar Abu Hasan Al Mahmud2Ashfaq Adnan3Department of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, TX 76019, USADepartment of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, TX 76019, USADepartment of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, TX 76019, USADepartment of Mechanical and Aerospace Engineering, University of Texas at Arlington, Arlington, TX 76019, USAExistent literature has limitations regarding the mechanical behavior of axonal cytoskeletal components in a high strain rate scenario, which is mainly due to limitations regarding the structure of some components such as tau protein and neurofilaments (NF). This study performs molecular dynamics (MD) simulations on NFs to extract their strain rate-dependent behavior. It is found that they are highly stretchable and show multiple stages of unfolding. Furthermore, NFs show high tensile stiffness. Also, viscoelastic modeling shows that they correspond to simplified viscoelastic models. This study effectively enhances the existent axonal models focusing on axonal injury.https://www.mdpi.com/2218-273X/11/4/540neurofilamentsaxonal cytoskeletonaxonal injurymechanical behaviorviscoelastic modeling
spellingShingle Md Ishak Khan
Fuad Hasan
Khandakar Abu Hasan Al Mahmud
Ashfaq Adnan
Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
Biomolecules
neurofilaments
axonal cytoskeleton
axonal injury
mechanical behavior
viscoelastic modeling
title Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
title_full Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
title_fullStr Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
title_full_unstemmed Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
title_short Viscoelastic Response of Neurofilaments: An Atomistic Simulation Approach
title_sort viscoelastic response of neurofilaments an atomistic simulation approach
topic neurofilaments
axonal cytoskeleton
axonal injury
mechanical behavior
viscoelastic modeling
url https://www.mdpi.com/2218-273X/11/4/540
work_keys_str_mv AT mdishakkhan viscoelasticresponseofneurofilamentsanatomisticsimulationapproach
AT fuadhasan viscoelasticresponseofneurofilamentsanatomisticsimulationapproach
AT khandakarabuhasanalmahmud viscoelasticresponseofneurofilamentsanatomisticsimulationapproach
AT ashfaqadnan viscoelasticresponseofneurofilamentsanatomisticsimulationapproach