3.2.1. NWS

SOD activity as well as the levels of GSH, UA and TAC (Figure 1) in NWS of HT patients were significantly lower than those in NWS of control patients (↓10%, *p* = 0.03; ↓28%, *p* = 0.00003; ↓38%, *p* = 0.00003; ↓34%, *p* = 0.00005, respectively). CAT and Px activities in NWS of HT patients were notably

higher compared to those parameters found in NWS of the control group (↑66%, *p* = 0.00002; ↑66%, *p* = 0.00003, respectively) (Figure 1).

**Figure 1.** Enzymatic and nonenzymatic antioxidants in NWS, SWS and blood plasma/erythrocytes of the patients and control group. Data are shown as median (minimum–maximum). CAT—catalase; GPx—glutathione peroxidase; GSH—reduced glutathione; NWS—non-stimulated whole saliva; Px—salivary peroxidase; SOD—superoxide dismutase-1; SWS—stimulated whole saliva; UA—uric acid. \* *p* < 0.05, \*\* *p* < 0.01, and \*\*\*\* *p* < 0.0001.

#### 3.2.2. SWS

GSH, UA and TAC (Figure 2) concentrations in NWS of HT patients were significantly lower than in NWS of healthy controls (↓57%, *p* = 0.000003; ↓58%, *p* = 0.00001; ↓53%, *p* = 0.00001, respectively). CAT and Px activities in NWS of HT patients were considerably higher than in NWS of the control group (↑147%, *p* = 0.00002; ↑166%, *p* = 0.00003, respectively) (Figure 1).
