Table I.
Changes in oxidative stress indexes in RE groups and NERD group (mean ± SD).
| Index | NERD group (n=12) | Grade I RE group (n=15) | Grade II RE group (n=18) | Grade III RE group (n=15) |
|---|---|---|---|---|
| MDA content (nmol/g prot) | 8.1±3.6 | 12.3±4.9 | 21.2±6.7a,b | 35.5±5.7a–c |
| T-SOD activity (U/mg prot) | 56±21 | 41±14a | 30±15a,b | 19±9a–c |
a
P<0.05 vs. NERD group
b
P<0.05 vs. grade I RE group
c
P<0.05 vs. grade II RE group. RE, reflux esophagitis; NERD, non-erosive reflux disease; MDA, malondialdehyde; T-SOD, total superoxide dismutase; prot, protein.