Table 6 Selenium and Selenoproteins levels among different age groups

Selenium (µmol/ml), mean±SD

37.5 ± 2.6

38.9 ± 2.3

0.173^{^}

37.5 ± 1.5

38.8 ± 2.9

0.108^{^}

Glutathione Peroxidase 1 (ng/ml)

38.3 (25.5–54.0)

31.3 (17.4–54.6)

.514^$

26.4 (19.9–37.8)

39.8 (24.5–42.7)

.239^$

Thioredoxin Reductase 1 (ng/ml)

1.2 (0.9–1.3)

1.0 (0.9–1.3)

.799^$

1.3 (1.0–1.4)

1.3 (1.1–1.5)

.696^$

Selenoprotein W (ng/ml)

1.7 (1.2–2.9)

1.7 (1.0–2.6)

.671^$

1.9 (0.7–3.1)

1.4 (0.4–2.2)

.192^$