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Displacement MMG-based estimation of dynamic muscle viscoelasticity in the quadriceps during passive pedaling.
Sci Rep
January 2025
Graduate School of Interdisciplinary Science and Engineering of Health Systems, Okayama University, Okayama, 700-0082, Japan.
We explore the correlation between muscle viscoelasticity and displacement mechanomyography (DMMG) during passive joint movement. Current methods for assessing muscle viscoelasticity (which is essential for rehabilitation and sports conditioning) are limited in terms of simplicity, objectivity, and portability. We introduce a novel methodology employing DMMG during passive pedaling to evaluate these properties.
View Article and Find Full Text PDFStructured Liquid--Liquid Emulsion Stabilized by Surface-Engineered Liquid Metal Droplets as "Mutant" Pickering Emulsifiers.
ACS Appl Mater Interfaces
January 2025
Department of Chemical Engineering, Myongji University, Yongin 17058, Republic of Korea.
Liquid metals (LMs), i.e., metals and alloys that exist in a liquid state at room temperature, have recently attracted considerable attention owing to their electronic and rheological properties useful in various cutting-edge technologies.
View Article and Find Full Text PDFViscoelasticity of a single poly-protein probed step-by-step during its mechanical unfolding and refolding under the force-clamp conditions.
RSC Adv
January 2025
Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
One of still outstanding issues in protein folding is to be able to directly observe structural changes occurring along the folding pathway. Herein, we report on changes of the viscoelastic properties for a single protein molecule measured along its mechanically-induced unfolding and refolding trajectories. We use a model system, the I27 poly-protein, and investigate its conformational changes force-clamp AFM (FC-AFM) spectroscopy.
View Article and Find Full Text PDFUnlabelled: Compartmentalization of the nucleus into heterochromatin and euchromatin is highly conserved across eukaryotes. Constitutive heterochromatin (C-Het) constitutes a liquid-like condensate that packages the repetitive regions of the genome through the enrichment of histone modification H3K9me3 and recruitment of its cognate reader protein Heterochromatin Protein-1 (HP1a). The ability for well-ordered nucleosome arrays and HP1a to independently form biomolecular condensates suggests that the emergent material properties of C-Het compartments may contribute to its functions such as force-buffering, dosage-dependent gene silencing, and selective permeability.
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