Research Article

Oxidative Modification of Proteins in Pediatric Cystic Fibrosis with Bacterial Infections

Table 2

Clinical characteristics and oxidative stress markers of the patients studied.

Parameter Healthy subjects Pseudomonas aeruginosa Staphylococcus aureus

Relative fluorimetric results
 AGE (a.u./mg protein)
(2.57–3.81)
  
(3.34–5.89)

(3.5–5.28)
 Dityrosine (a.u./mg protein)
(2.29–3.38)

(2.88–5.22)

(3.09–5.28)
 Formylkynurenine (a.u./mg protein)
(2.49–3.83)

(3.21–5.87)

(3.50–5.47)
 Kynurenine (a.u./mg protein)
(3.55–4.51)

(3.36–5.8)

(3.24–5.91)
 Tryptophan (a.u./mg protein)
(544.2–658.27)

(371.66–497.16)

(385.38–516.86)
Modification of proteins
 Carbonyl protein (nmol/mg protein)
(0.76–1.15)

(0.96–2.93)

(1.28–2.33)
 Thiol groups (nmol/mg protein)
(18.6–20.49)

(12.6–19.05)

(11.19–19.83)
 AOPP (nmol/mg protein)
(141.09–183.32)

(137.18–318.19)

(139.71–293.77)
 Amadori products (nmol/mg protein)
(1416.4–1675.38)

(1234.74–2878.33)

(1351.38–1762.19)
Activity of erythrocyte enzymes
 Glutathione S-transferase (U/g Hb)
(0.55–0.94)

(1.43–3.99)

(1.49–3.91)
 Catalase (U/mg Hb)
(0.29–0.39)

(0.19–0.37)

(0.22–0.33)
 Superoxide dismutase (U/g Hb)
(1056.4–1296.93)

(690.8–1671.34)

(859.38–1387.81)
 Total antioxidant capacity (nmol/mg protein)
(14.22–18.44)

(18–30.67)

(17.84–21.77)
 Level of nitric oxide eNO (ppb)
(5.3–22.4)

(6.4–20.6)

(5.6–16.8)

Data are shown as means ± SD (range).
.