Table 2.

Catalase (CAT), glutathione peroxidase (GPx), and superoxide dismutase (SOD) activity in the colon, MLN, and spleen during colitis and HBO₂ treatment.

Enzymatic activity (U mg−1 P)	Tissue	CTRL	CTRL + HBO2	DSS	DSS + HBO2
CAT	Colon	6.77 ± 3.04	5.39 ± 1.07	4.11 ± 0.33	4.23 ± 0.20
	MLN	13.90 ± 0.39	11.78 ± 1.71	9.06 ± 0.22∗	12.62 ± 0.42
	Spleen	10.44 ± 1.94	14.00 ± 0.97	6.75 ± 0.53∗	14.28 ± 1.11#
GPx	Colon	0.084 ± 0.028	0.097 ± 0.012	0.080 ± 0.008	0.072 ± 0.003
	MLN	0.164 ± 0.006	0.158 ± 0.021	0.175 ± 0.004	0.172 ± 0.007
	Spleen	0.098 ± 0.005	0.109 ± 0.003	0.114 ± 0.007	0.134 ± 0.004∗†
SOD	Colon	15.40 ± 3.29	27.86 ± 3.55∗	30.56 ± 2.70∗	30.97 ± 1.58∗
	MLN	36.53 ± 2.80	33.96 ± 3.33	34.48 ± 1.62	35.30 ± 1.75
	Spleen	19.87 ± 1.15	17.91 ± 0.72	20.93 ± 1.03	25.34 ± 1.61∗†

BALB/c mice at the age of 10–12 weeks were randomly assigned into 4 groups (n = 5/group): CTRL: control mice, CTRL + HBO₂: control mice undergoing HBO₂ (60 min/2.4 ATM, 2x/day, days 1–8), DSS: mice receiving DSS (5% w/v, days 1–7), and DSS + HBO₂: DSS treated mice undergoing HBO₂. Presented data (mean ± s.e.m.) are representative results from one experiment with min. five mice/group; P < 0.05 was considered significant; ^∗statistically different from CTRL, P < 0.05; ^#statistically different from DSS, P < 0.05; ^†statistically different from CTRL + HBO₂, P < 0.05.