SUIT-004 O2 pfi D010: Difference between revisions
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Revision as of 03:49, 11 January 2019
Description
Abbreviation: NS(PM)
Reference: A: SUIT 4 is a short SUIT protocol linked to SUIT-1 O2 pfi D02 - SUIT RP1 (human skeletal muscle)
SUIT number: D10_1PM;2D;3U;4S;5Rot
O2k-Application: O2
MitoPedia concepts:
SUIT protocol,
SUIT A
- SUIT-category: NS(PM)
- SUIT protocol pattern: orthogonal
- Linked to SUIT-1 O2 pfi D02 - SUIT RP1, specifically for human skeletal muscle mitochondria.
- Harmonized with SUIT-5 O2 pfi D11.
1PM;2D;2c;3U;4S;5Rot-
File:1PM;2D;2c;3U;4S;5Rot.png 1PM;2D;2c;3U;4S;5Rot-
Link to RP1
- The 1PM;2D;3U;4S;5Rot- protocol is linked to 1PM;2D;3U;4G;5S;6Oct;7Rot;8Gp- for healthy human skeletal muscle mitochondria on the basis of the following rationale.
- The first coupling control steps (1-4) are identical.
- RP1-5G is skipped, since PM and PGM yield nearly identical OXPHOS capacity. However, PM<PGM is a potential diagnostic for a defect in the PM-linked pathway upstream of CI.
- RP1-7Oct is skipped, since octanoylcarnitine exerts practically no stimulatory effect on OXPHOS capacity in state PMS or PGMS, but in conjunction with prolonged exposure may even yield a slight decline of respiration.
- RP1-9Gp is skipped, since glycerolphosphate exerts only a minor stimulatory effect on OXPHOS capacity in state SRot.
- Omission of the three steps described above shortens the SUIT protocol, thus reducing the risk of diminishing respiratory capacity over time, reducing the number of necessary reoxygenations, and providing more time for detailed evaluation of steady-states. The loss of diagnostic information may be minor relative to the benefits of simplification of the protocol, particularly in studies of exercise in healthy humans.
- RP1-10Ama may be skipped, since correction of the initial states by ROX measured in RP1-10 Ama may represent an over-correction, and inhibition takes a very long time in several cases (Pesta 2012 Methods Mol Biol).
- RP1-11Tm and RP1-12Azd are skipped, if a prolonged protocol is not practical due to limination of time.