Mitochondrial Superoxide
Mitochondrial Superoxide - Related Videos
12:06
Confocal Imaging of Single Mitochondrial Superoxide Flashes in Intact Heart or In Vivo
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Cited by 10 •
2013
Confocal scanning microscopy is applied for imaging single mitochondrial events in perfused heart or skeletal muscles in live animal. Real-time monitoring of single mitochondrial processes such as superoxide flashes and membrane potential fluctuations enables the evaluation of mitochondrial function in a physiologically relevant context and during pathological perturbations.
08:57
Simultaneous Measurement of Superoxide/Hydrogen Peroxide and NADH Production by Flavin-containing Mitochondrial Dehydrogenases
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Cited by 8 •
2018
Mitochondria contain several flavin-dependent enzymes that can produce reactive oxygen species (ROS). Monitoring ROS release from individual sites in mitochondria is challenging due to unwanted side reactions. We present an easy, inexpensive method for direct assessment of native rates for ROS release using purified flavoenzymes and microplate fluorometry.
08:58
En Face Detection of Nitric Oxide and Superoxide in Endothelial Layer of Intact Arteries
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Cited by 10 •
2016
In this article we describe an adapted relatively easy method using the fluorescence dye diaminofluorescein-2 diacetate (DAF-2DA) and dihydroethidium (DHE) for en face simultaneous detection and visualization of intracellular nitric oxide (NO) and superoxide anion (O2.−) respectively, in freshly isolated intact aortas of an obesity mouse model.
06:57
Fluorescence-Based Quantification of Mitochondrial Membrane Potential and Superoxide Levels Using Live Imaging in HeLa Cells
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Cited by 1 •
2023
This technique describes an effective workflow to visualize and quantitatively measure mitochondrial membrane potential and superoxide levels within HeLa cells using fluorescence-based live imaging.
02:59
Animal Mitochondrial Genetics
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2020
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Complexes I and III are important because electron escape at these sites can increase the reduction of molecular oxygen and alter the cell’s redox state. Their involvement connects superoxide measurements with respiratory-chain activity and energy metabolism. In bioengineering studies, this relationship helps researchers evaluate whether an engineered cell system changes mitochondrial function or oxidative stress.
Mitochondrial superoxide dismutase converts much of the superoxide generated in mitochondria into hydrogen peroxide. This conversion changes the chemical form of the reactive oxygen species and affects how redox information or oxidative injury develops. Consequently, measurements should be interpreted in relation to downstream hydrogen peroxide formation rather than treating superoxide as an isolated indicator.
Its level reflects the relationship between electron activity in the respiratory chain, oxygen reduction, and the cell’s ability to process reactive oxygen species. Increased or altered signals can therefore indicate changes in redox balance, energy metabolism, or oxidative stress. This makes mitochondrial superoxide useful for assessing how cellular engineering affects mitochondrial condition.
Measurements can reveal whether an engineered cell system has altered mitochondrial redox balance, energy metabolism, or oxidative stress. Researchers can compare these signals when evaluating changes intended to improve cellular resilience or modify metabolism. The resulting data provide an indicator of mitochondrial function, while also helping identify conditions associated with potential oxidative injury.
A typical conceptual workflow links a mitochondrial superoxide measurement with the engineered condition being tested, such as a modified cell, biomaterial, or therapeutic strategy. Researchers then interpret the signal alongside its relevance to redox balance, energy metabolism, and oxidative stress. This approach helps determine whether the intervention protects mitochondrial function or produces an unfavorable metabolic response.
Mitochondrial superoxide measurements help determine how biomaterials and therapeutic strategies influence cellular oxidative conditions. A strategy that changes metabolism or protects mitochondrial function can be evaluated through its effects on this indicator. These findings support the design of more resilient cell systems and provide context for studying disease-related oxidative injury in engineered biological settings.