Functional Activity Assessment
Functional Activity Assessment - Related Videos
10:32
Assessing Functional Performance in the Mdx Mouse Model
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Cited by 184 •
2014
The primary outcome measure in clinical trials for neuromuscular disorders is generally improved muscle function. Therefore, assessing the effect of potential therapeutic compounds on muscle performance pre clinically in mouse models is of great importance. We here describe several functional tests to address this.
05:41
Non-invasive Assessment of Microvascular and Endothelial Function
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Cited by 12 •
2013
Capillaroscopy is a non-invasive, relatively inexpensive methodology for directly visualizing the microcirculation. The forearm blood flow technique provides accepted non-invasive measures of endothelial function.
09:59
Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein
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Cited by 7 •
2015
Described here is a rapid and effective procedure for functional reconstitution of purified wild-type and mutant CFTR protein that preserves activity for this chloride channel, which is defective in Cystic Fibrosis. Iodide efflux from reconstituted proteoliposomes mediated by CFTR allows studies of channel activity and the effects of small molecules.
07:53
Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
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Cited by 30 •
2015
We present a protocol to assess changes in neuromuscular function. Percutaneous electrical nerve stimulation is a non-invasive method that evokes muscular responses. Electrophysiological and mechanical properties of these responses permit the evaluation of neuromuscular function from brain to muscle (supra-spinal, spinal and peripheral levels).
05:31
Non-invasive Assessment of Dorsiflexor Muscle Function in Mice
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Cited by 12 •
2019
Measurement of rodent skeletal muscle contractile function is a useful tool that can be used to track disease progression as well as efficacy of therapeutic intervention. We describe here the non-invasive, in vivo assessment of the dorsiflexor muscles that can be repeated over time in the same mouse.
FAQs
Reference or baseline conditions provide a comparison point for interpreting a measured response. Researchers can then determine whether an experimental condition produces increased activity, reduced activity, inhibition, or another meaningful change. Keeping conditions controlled makes differences more attributable to the factor being studied and improves the reliability of comparisons between experiments.
A functional readout shows what results from an interaction rather than only indicating that the interaction occurred. Measuring the expected output of a molecule, cell, tissue, or organism can therefore help connect molecular interactions or structural features with physiological outcomes. This relationship supports biological models that explain how changes at one level affect function at another.
The direction and magnitude of a response are interpreted against a reference or baseline. A comparable or stronger output may indicate maintained or increased activity, whereas a reduced output can indicate inhibition or another functional change. Because the same biological system may respond differently under altered conditions, consistent comparisons are essential for assigning meaning to the observed result.
Planning begins by identifying the expected function and selecting a measurable output that represents it. The system is then examined under controlled conditions alongside a reference, baseline, or altered condition. Comparing the resulting responses allows researchers to evaluate activity or change and determine whether the chosen readout addresses the biological question.
The approach can be applied to molecules, enzymes, receptors, cells, tissues, and whole organisms, provided their expected function can be represented by a defined output. This broad range allows investigators to study activity at different levels of biology, from molecular behavior to tissue or organismal responses, while preserving a basis for comparison.
It is useful when researchers need to determine how a disease-related change, environmental effect, or potential treatment alters biological performance. Comparing functional responses can reveal whether a condition changes activity, support characterization of disease mechanisms, and help evaluate possible interventions. The resulting evidence can also guide the development of biological models and treatment strategies.