Cardiac Cell Viability
Cardiac Cell Viability - Related Videos
12:03
Viability Assays for Cells in Culture
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Cited by 39 •
2014
Therapeutic compounds are often first examined in vitro with viability assays. Blind cell counts by a human observer can be highly sensitive to small changes in cell number but do not assess function. Computerized viability assays, as described here, can assess both structure and function in an objective manner.
05:47
Counting and Determining the Viability of Cultured Cells
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Cited by 19 •
2008
Determining the number of cells in culture is important in standardization of culture conditions and in performing accurate quantitation experiments. In this video, we demonstrate how cells are counted using a hemacytometer.
07:26
Isolation of Functional Cardiac Immune Cells
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Cited by 9 •
2011
This method for isolating functional immune cells from the heart provides an alternative to the conventional methods of collagenase digestion, which causes unwanted immune cell activation, resulting in a decreased responsiveness of these cells. Our method of isolation yields functional cardiac immune cells by avoiding problems associated with enzymatic digestion.
08:13
In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
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Cited by 17 •
2016
This method outlines the use of Quantum Micro-Computed Tomography (MicroCT) to assess cardiac morphology, function, perfusion, metabolism and viability with iodinated contrast agent in mice with experimentally-induced myocardial ischemia. The technique can be applied for non-destructive high-throughput longitudinal in vivo imaging of various animal models of human heart disease.
07:28
Imaging Cell Viability on Non-transparent Scaffolds — Using the Example of a Novel Knitted Titanium Implant
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Cited by 6 •
2016
Here we present a fluorophore based imaging technique to detect cell viability on a non-transparent titanium scaffold as well as to detect glimpses of the scaffold impurities. This protocol troubleshoots the drawback of imaging cell-cell or cell-metal interactions on non-transparent scaffolds.
FAQs
Cardiac cell viability is best interpreted through the biological signal an assay measures, rather than through a single universal readout. Membrane-integrity tests indicate whether cells exclude viability dyes, whereas ATP assays reflect cellular energy status, and enzyme-based or metabolic assays report biochemical activity. These approaches can therefore capture different aspects of cellular condition under the same experimental treatment.
Different assays measure separate cellular properties, so their results may not change in parallel. A treatment could affect membrane integrity, ATP availability, or metabolic and enzyme activity to different degrees. Comparing these readouts helps researchers determine which aspect of cell condition is altered and prevents one measurement from being treated as a complete account of cellular health.
Drugs, toxins, and ischemic stress provide distinct experimental challenges for evaluating cardiac cells, while genetic or environmental changes can create additional conditions for comparison. Viability measurements show how strongly each challenge affects membrane integrity, energy status, or metabolic activity. Interpreting the selected readout in relation to the specific stress helps connect an observed change with the biological question being tested.
Researchers should first define the culture or experimental condition being examined and select a measurement that matches the intended biological endpoint. Membrane integrity, ATP levels, enzyme activity, and metabolic activity provide different forms of evidence. Aligning the assay with the question allows the resulting data to describe the relevant cellular response rather than relying on an unsuitable or incomplete indicator.
Cardiac cell viability measurements are used when researchers need to evaluate how cardiomyocytes respond to drugs, toxins, ischemic stress, or genetic and environmental changes. The results can reveal whether an experimental condition is associated with loss of cellular integrity or activity. This makes viability analysis useful for investigating heart disease mechanisms and assessing potential harmful effects on cardiac cells.
In tissue engineering, viability measurements help assess whether cardiac cells remain sufficiently intact and active under the conditions used to develop experimental cardiac constructs. In therapy research, the same measurements help evaluate cellular responses to candidate interventions. Together, these outcomes support decisions about whether experimental conditions are compatible with maintaining cardiac cells and advancing potential cardiac treatments.