Table 1.

Summary of oxidative stress related data for measurements of total salivary antioxidant status levels (TAS), total antioxidative capacity (ImAnOx), activity of three salivary antioxidants (Uric acid, SOD, SPO) and the salivary protein oxidation levels (carbonyls).^a

Group	TAS, mmol/L	ImAnOx, (umol/L)	Uric acid, mg/dL	SOD, U/mL	SPO, ODb	Carbonyls, nmol/mg
Control
n	16	13	16	16	16	16
Range	[0.14–0.48]	[6–333]	[0.0–2.1]	[0.69–4.61]	[0.215–0.55]	[−0.215 to 1.3]
Median	0.27	193	0.70	1.205	0.515	0.087
All patients
n	35	26	35	33	35	32
Range	[0.19–1.28]	[158–389]	[0.0–5.2]	[0.64–3.28]	[0.41–0.553]	[−0.128 to 1.55]
Median	0.39	241	0.80	1.31	0.485	0.161
P2c	0.01d	0.049	0.57	0.709	0.009c	0.444
Anti-TNF treated patients
n	14	12	14	14	14	13
Range	[0.26–0.58]	[158–389]	[0.0–5.2]	[0.64–3.26]	[0.428–0.523]	[−0.13 to 1.55]
Median	0.39	239	0.75	1.07	0.476	0.25
P2c	0.0144e	0.07	0.643	0.826	0.014e	0.188
Untreated patients
n	21	14	21	20	21	19
Range	[0.19–1.28]	[159–315]	[0.0–2.3]	[0.8–3.28]	[0.41–0.553]	[−0.1 to 0.63]
Median	0.37	241	1.0	1.395	0.496	0.122
P2c	0.0384e	0.254	0.599	0.474	0.032e	0.869
Active-JIA patients
n	26	18	26	24	26	23
Range	[0.23–1.28]	[158–370]	[0.0–5.2]	[0.8–3.28]	[0.41–0.553]	[−0.13 to 1.55]
Median	0.437	248	1.7	1.35	0.48	0.166
P2c	0.001d	0.062e	0.60	0.553	0.006d	0.607
Non-active-JIA patients
n	9	8	9	9	9	9
Range	[0.19–0.50]	[159–389]	[0.1–1.7]	[0.64–3.26]	[0.45–0.52]	[−0.03 to 0.88]
Median	0.26	241	0.7	1.26	0.51	0.132
P2c	0.976	0.469	0.648	0.82	0.213	0.336

^aFor calculation of P values, all groups were compared with the control group.

^bOD, optical density (absorbance).

^cP², Kruskal–Wallis test.

^dP ≤ 0.01.

^eP ≤ 0.01.