Effect of Terahertz Waves on the Structure of the Aβ42 Monomer, Dimer, and Protofibril: Insights from Molecular Dynamics Simulations
Chen C, Yan Z-S Ma Y-Q, Ding H-M · 2023
Specific terahertz wave frequencies can structurally alter amyloid-beta peptides in ways that enhance their aggregation and stabilization, raising potential concerns about electromagnetic field exposure.
Plain English Summary
This molecular dynamics simulation study investigated how terahertz waves affect the structure of amyloid-beta (Aβ42) peptides at different aggregation states. The researchers found that terahertz waves at 42.55 THz enhanced structural interactions in Aβ42 monomers and dimers by resonating with specific molecular vibration modes, increasing β-sheet content and binding energy between monomers, while also mildly stabilizing tetrameric protofibril structures.
Why This Matters
This is a computational study using molecular dynamics simulations rather than experimental research, so findings represent theoretical predictions about protein-field interactions. Amyloid-beta aggregation is implicated in Alzheimer's disease pathology, making the structural effects observed here potentially relevant to neurodegenerative disease mechanisms, though further experimental validation would be needed.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{chen_c_yan_z_s_ma_y_q_ding_h_m_ce3181,
author = {Chen C and Yan Z-S Ma Y-Q and Ding H-M},
title = {Effect of Terahertz Waves on the Structure of the Aβ42 Monomer, Dimer, and Protofibril: Insights from Molecular Dynamics Simulations},
year = {2023},
doi = {10.1016/j.annonc.2023.09.3108},
}