Enteral nutrition combined with glutamine promotes recovery after ileal pouch-anal anastomosis in rats

Table 1 Histological scoring criteria

Score	Erosion	Ulceration	Villous atrophy	Edema in the lamina propria
0	Negative	None	None	None
1	Focal erosion	Focal ulceration of the mucosa at ½ superficial regions	Mild	Positive
2	Erosion is observed In many regions	Total mucosal ulceration at multiple foci	Moderate
3	Extensive erosion	Extensive mucosal ulceration extending to muscularis mucosa or beyond	Severe, villous flattening

Intra-epithelial inflammation was evaluated by counting the lymphocytes in 100 epithelial cells at the tips of the villi. Abscess formation and submucosal inflammation were also evaluated.