Colon malondialdehyde (MDA) concentrations in rats. Vertical columns and error bars represent mean ± SD. bP < 0.001 vs colitis, NTS and BBS&NTS and aP < 0.05 vs BBS; dP < 0.001 vs control, BBS, NTS and BBS&NTS; fP < 0.001 vs colitis and eP < 0.05 vs control and NTS; hP < 0.001 vs control and colitis, jP < 0.05 vs BBS and BBS and NTS; kP < 0.001 vs control, colitis and NTS. BBS: Bombesin; NTS: Neurotensin.