Dynamic Stress
Dynamic Stress - Related Videos
10:12
Visualization of G3BP Stress Granules Dynamics in Live Primary Cells
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2014
Stress granules (SGs) are cytoplasmic RNA granules containing stalled ribonucleoprotein particles (RNPs), and important in cellular response to various stresses. Dynamics of SGs can be followed in live cells by visualizing the localization of a tagged component of SGs in transfected primary cells after stress.
09:39
The Trier Social Stress Test Protocol for Inducing Psychological Stress
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Cited by 251 •
2011
This article describes a protocol for inducing psychological stress in participants, which enables researchers to measure psychological, physiological and neuroendocrine responses to stress within single participants or between groups.
08:14
Modeling Social Stress
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2023
Stress negatively affects our quality of life. In particular, some individuals experience social stress when placed in a social environment that they are unfamiliar with or have difficulty adjusting to. Since it is hard to examine mechanisms of social stress in humans, modeling this condition in animals may help scientist in developing new therapies for treating this commonly encountered problem. This science education video begins by discussing the known anatomy and physiology behind stress...
10:57
Examining the Dynamics of Cellular Adhesion and Spreading of Epithelial Cells on Fibronectin During Oxidative Stress
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Cited by 2 •
2019
This method is useful for quantifying the early dynamics of cellular adhesion and spreading of anchorage-dependent cells onto the fibronectin. Furthermore, this assay can be used to investigate the effects of altered redox homeostasis on cell spreading and/or cell adhesion-related intracellular signaling pathways.
12:03
Dynamics of Structures
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA It is rare nowadays that a whole year goes by without a major earthquake event wreaking havoc somewhere around the world. In some cases, like the 2005 Banda Ache earthquake in Indonesia, the damage involved large geographic areas and casualties in the six figures. In general, the number and intensity of earthquakes is not increasing, however, the vulnerability of the built environment is...
FAQs
Loading rate, geometry, and viscoelastic behavior jointly determine how a material, cell, or tissue strains under a time-varying load. Changing the loading rate can alter the measured strain even when other conditions remain similar, while geometry influences how forces are distributed. These dependencies make dynamic testing useful for comparing responses across engineered constructs.
In living systems, repeated or changing mechanical forces can activate mechanotransduction pathways, meaning cellular processes that respond to mechanical cues. Dynamic Stress experiments therefore connect an applied loading pattern with a biological response rather than measuring deformation alone. This relationship is relevant when evaluating how cells and tissues may react within engineered environments.
Compared with constant loading, time-varying testing can expose responses associated with repeated use, fatigue, or deformation. It also allows researchers to vary magnitude, direction, or frequency and observe how those changes affect strain. This comparison is important because a construct that appears satisfactory under one loading condition may respond differently when the mechanical environment changes.
A basic workflow begins by selecting a material, cell system, tissue, or engineered construct, then applying a controlled cyclic, oscillatory, or transient force. Researchers vary the relevant loading conditions, record the resulting strain, and interpret the response in relation to loading rate, geometry, and viscoelastic behavior. This creates a controlled model of changing mechanical exposure.
Measurements can show how an engineered construct responds to changing mechanical exposure, including deformation associated with repeated loading. In bioengineering, these results support the design and evaluation of biomaterials, tissue-engineered scaffolds, prostheses, and bioreactors. The information helps researchers judge whether laboratory conditions represent the mechanical demands relevant to the intended application.
It is especially useful when researchers need to study materials or living systems under conditions that resemble physiological mechanical environments rather than constant loading alone. Applications include evaluating scaffold behavior, prosthesis performance, biomaterial response, and bioreactor conditions. Repeated or transient testing can also reveal fatigue or deformation that static assessment may not expose.