TNF and systemic inflammatory response syndrome: Table 1 shows that there were no statistically significant differences in Age (y), Body Mass Index (BMI) (kg/m2), Duration of ulcer (d), White Blood Cell (WBC) (×109), C-Reactive Protein (CRP) (mg/L), Systemic Inflammatory Response Syndrome (SIRS) score, IL-6 (pg/ml), TNF-α (pg/ml), TG (mmol/L) and TC (mmol/L) of the three groups patients.