Table 3.
Mitochondrial respiration (picomoles O2 per second per milligram protein) during state 3 (active) and state 4 (rest), respiratory control ratio, and total leak respiration in the presence of ATP-synthase inhibitor oligomycin
Group | N | State 3 | State 4 | Respiratory Control Ratio | Total Leak Respiration | Leak Respiration through UCP-2 | Leak Respiration through ANT | Total Regulated Leak Respiration |
---|---|---|---|---|---|---|---|---|
Control | 10 | 121±19 | 23±3 | 5.1±0.3 | 28±2 | 0.2±0.3 | 1.6±0.3 | 1.8±0.4 |
Control+CoCl2 | 7–9 | 114±17a | 19±3a | 5.9±0.4a | 23±2a | 0.3±0.3a | 1.5±0.3a | 1.8±0.5a |
Diabetes | 9 | 265±29b | 34±3b | 7.8±0.6b | 43±5b | 5.4±0.6b | 5.6±1.1b | 11.3±1.6b |
Diabetes+COCl2 | 9 | 167±11a | 22±2a | 7.4±0.3b | 24±2a | 0.2±0.2a | 1.6±0.1a | 1.8±0.2a |
Two-way ANOVA | ||||||||
Type | P<0.001 | P=0.01 | P<0.001 | P=0.02 | P<0.001 | P=0.001 | P<0.001 | |
Treatment | P=0.02 | P=0.01 | P=0.66 | P<0.001 | P<0.001 | P<0.001 | P<0.001 | |
Interaction | P=0.04 | P=0.19 | P=0.18 | P=0.03 | P<0.001 | P=0.001 | P<0.001 |
Involvements of UCP and ANT were determined by the magnitude of inhibition by the specific inhibitors guanosine diphosphate and carboxyatractylate, respectively. All values are ±SEM. Type denotes control versus diabetes, and treatment denotes untreated versus CoCl2.
P<0.05 compared with the untreated diabetes group.
P<0.05 compared with the untreated control group.