Table 1.

Effects of oral and rectal administration of different doses of QB extract (200, 400 mg/kg) and sulfasalazine (500 mg/kg) on colonic macroscopic damage (A) and histological score (B) rats' TNBS-induced colitis.

Group	Macroscopic score	Histological score
Sham control	0.55 ± 0.11	0.78 ± 0.09
Negative control	4.97 ± 0.26##	13.1 ± 0.48##
QB extract 200 mg/kg orally	3.04 ± 0.21##∗∗	9.1 ± 0.37##∗∗
QB extract 400 mg/kg orally	2.17 ± 0.18##∗∗	7.95 ± 0.26##∗∗
QB extract 200 mg/kg rectally	1.88 ± 0.33##∗∗	7.23 ± 0.15##∗∗
QB extract 400 mg/kg rectally	1.43 ± 0.14##∗∗	6.51 ± 0.22##∗∗
Sulfasalazine (treated control)	1.24 ± 0.16∗∗	6.12 ± 0.41##∗∗

Data are expressed as means ± SEM. ^##P < 0.01 vs. sham control; ^∗P < 0.05, ^∗∗P < 0.01 vs. TNBS control.