Table 2.
Inhibitor effects on tyrosyl radical EPR characteristics.
Inhibitor | Linewidth (G) | Linewidth (G) | Relative Half-lifec | Relative Initial Yieldd | Relative Initial Yieldd |
---|---|---|---|---|---|
I firsta | ROOH firstb | ROOH firstb | I firste | ROOH firstb | |
None | - | 28.6 ± 0.4 (n=8) | 1.0 | 1.0 | 1.0 |
Nimesulide | 25.2 ± 0.5 (n=4) | 27.3 ± 0.4 (n=11) | 170 | 0.12 | 1.4 |
Flurbiprofen | 28.6 ± 0.2 (n=3) | 29.0 ± 0.3 (n=9) | 12 | 0.29 | 1.1 |
Diclofenac | 25.0 ± 0.5 (n=4) | 28.3 ± 0.7 (n=5) | 0.20 | 0.17 | 0.8 |
Preincubated with 2 eq of inhibitor before reaction with 10 eq of EtOOH for 6-8 s.
Reacted with 2 eq EtOOH for 6-8 s before addition of 20 eq of inhibitor (if any).
Normalized to the tyrosyl radical half-life in the control reacted with only EtOOH. Values are the averages of duplicate determinations.
Normalized to the initial tyrosyl radical intensity in the control reacted with only EtOOH. Values are the averages of duplicate determinations.
Preincubated with 2 eq of inhibitor before reaction with 2 eq of EtOOH for 6-8 s.