SUIT-018 AmR mt D040: Difference between revisions
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This is a short protocol to study simultaneously the oxygen dependence of O<sub>2</sub> flux and H<sub>2</sub>O<sub>2</sub> production on isolated mitochondria or tissue homogenate (except of liver homogenate). You can run the protocol 1.)under tissue normoxia (50-60 ยตM = [O<sub>2</sub>]) [[SUIT-018 AmR mt D031]], 2.) under tissue hyperoxia [> 120 ยตM = [O<sub>2</sub>]]ย [[SUIT-018 AmR mt D040]] or 3.) you can change the oxygen concentration during the experiment [[SUIT-018 AmR mt D041]]. It is recommended to run both SUIT-018 AmR mt D031 and SUIT-018 AmR mt D040 simultaneously in order to investigate the H<sub>2</sub>O<sub>2</sub> production at different oxygen concentrations. | This is a short protocol to study simultaneously the oxygen dependence of O<sub>2</sub> flux and H<sub>2</sub>O<sub>2</sub> production on isolated mitochondria or tissue homogenate (except of liver homogenate). You can run the protocol 1.)under tissue normoxia (50-60 ยตM = [O<sub>2</sub>]) [[SUIT-018 AmR mt D031]], 2.) under tissue hyperoxia [> 120 ยตM = [O<sub>2</sub>]]ย [[SUIT-018 AmR mt D040]] or 3.) you can change the oxygen concentration during the experiment [[SUIT-018 AmR mt D041]]. It is recommended to run both SUIT-018 AmR mt D031 and SUIT-018 AmR mt D040 simultaneously in order to investigate the H<sub>2</sub>O<sub>2</sub> production at different oxygen concentrations. | ||
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ย Communicated by '''[Komlodi T]]'''ย (last update 2019-02-01) | ย Communicated by '''[[Komlodi T]]'''ย (last update 2019-02-01) | ||
== References == | == References == |
Revision as of 12:57, 12 February 2019
Description
Abbreviation: NS(GM)
Reference: A: SUIT-018 to study simultaneously the oxygen dependence of O2 flux and H2O2 production in mitochondrial preparations (isolated mitochondria and tissue homogenate).
SUIT number: D040_1GMS;2D;3Ama
O2k-Application: AmR
- SUIT-category: NS(GM)
- SUIT protocol pattern: orthogonal 1GMS;2D;3Ama
This is a short protocol to study simultaneously the oxygen dependence of O2 flux and H2O2 production on isolated mitochondria or tissue homogenate (except of liver homogenate). You can run the protocol 1.)under tissue normoxia (50-60 ยตM = [O2]) SUIT-018 AmR mt D031, 2.) under tissue hyperoxia [> 120 ยตM = [O2]] SUIT-018 AmR mt D040 or 3.) you can change the oxygen concentration during the experiment SUIT-018 AmR mt D041. It is recommended to run both SUIT-018 AmR mt D031 and SUIT-018 AmR mt D040 simultaneously in order to investigate the H2O2 production at different oxygen concentrations.
Communicated by Komlodi T (last update 2019-02-01)
References
Year | Reference | Organism | Tissue;cell | |
---|---|---|---|---|
MiPNet24.10 H2O2 flux analysis | 2021-10-22 | Hydrogen peroxide flux analysis using Amplex UltraRed assay in MiR05-Kit with DatLab 7.4 | ||
Komlodi 2021 BEC AmR-O2 | 2021 | Komlรณdi T, Sobotka O, Gnaiger E (2021) Facts and artefacts on the oxygen dependence of hydrogen peroxide production using Amplex UltraRed. Bioenerg Commun 2021.4. https://doi.org/10.26124/bec:2021-0004 | Saccharomyces cerevisiae | Other cell lines |
MiPNet20.14 AmplexRed H2O2-production | 2019-06-24 | O2k-FluoRespirometry: HRR and simultaneous determination of H2O2 production with Amplex UltraRed. | Mouse | Heart |
Komlodi 2018 Methods Mol Biol | 2018 | Komlodi T, Sobotka O, Krumschnabel G, Bezuidenhout N, Hiller E, Doerrier C, Gnaiger E (2018) Comparison of mitochondrial incubation media for measurement of respiration and hydrogen peroxide production. Methods Mol Biol 1782:137-55. | Human Mouse | Skeletal muscle HEK |
Makrecka-Kuka 2015 Biomolecules | 2015 | Makrecka-Kuka M, Krumschnabel G, Gnaiger E (2015) High-resolution respirometry for simultaneous measurement of oxygen and hydrogen peroxide fluxes in permeabilized cells, tissue homogenate and isolated mitochondria. https://doi.org/10.3390/biom5031319 | Human Mouse | Heart Nervous system HEK |
Krumschnabel 2015 Methods Mol Biol | 2015 | Krumschnabel G, Fontana-Ayoub M, Sumbalova Z, Heidler J, Gauper K, Fasching M, Gnaiger E (2015) Simultaneous high-resolution measurement of mitochondrial respiration and hydrogen peroxide production. Methods Mol Biol 1264:245-61. | Mouse | Nervous system |
Steps and respiratory states
Step | State | Pathway | Q-junction | Comment - Events (E) and Marks (M) |
---|---|---|---|---|
0DTPA |
| |||
0SOD |
| |||
0HRP |
| |||
0AmR |
|
Step | State | Pathway | Q-junction | Comment - Events (E) and Marks (M) |
---|---|---|---|---|
1GMS | GMSL(n) | NS | CI&CII | 1GMS
|
2D | GMSP | NS | CI&CII | 1GMS;2D
|
3Ama | ROX | 1GMS;2D;3Ama
|
Strengths and limitations
- + Reasonable duration of the experiment.
- + Simple protocol to evaluate the oxygen dependence of H2O2 production.
- - Measurements with Amplex UltraRed assay cannot be carried out with liver homogenate.
- - H2O2 production can be studied in two different states, LEAK and OXPHOS.
- - Reoxygenation and nitrogen injection could lead to bubble formation in the O2k-Chamber
- - CIV activity and Cytochrome c test cannot be performed together with the fluorescence.
Compare SUIT protocols
MitoPedia concepts: SUIT protocol, SUIT A, Find
MitoPedia methods:
Fluorometry