Table 2

Effect of pregabalin (200 mg/kg s.c.) on the inflammatory parameters in the proximal colon at day 7

WeightMPO ContentHyperemia and Necrosis
g U/mg of protein % of colonic area
Saline0.62  ± 0.02 (8)4.04  ± 0.94 (8)0.4  ± 0.1 (8)
TNBS1.39  ± 0.10 (6)34.45  ± 8.31 (6)31.1  ± 6.0 (6)
Pregabalin (200 mg/kg s.c.)1.50  ± 0.09 (8)43.87  ± 5.56 (8)28.4  ± 5.1 (8)

One unit of MPO activity was defined as that which would produce an increase in absorbance (Δ A450 nm) of 1.0 unit/min at pH 7.0 and 25°C, calculated from the initial rate of reaction with peroxide (1 μM) as the substrate. The results are expressed as MPO units per milligram of protein (mean ± S.E.M.; n = 6–8/group).