Table 5
Plasma ferroxidase activity and related variables
|
Ferroxidase activity (IU/l) |
Caeruloplasmin (μM) |
AA (μM) |
AA/caeruloplasmin (molar ratio) |
|
| Preterm infants (n=20) | 259.0 (68.0–603.0)5-150 5-151 | 0.7 (0.3–1.9)5-150 5-151 | 56.6 (13.3–197.8) | 84.7 (9.9–188.9)5-150 5-151 |
| Full term infants (n=6) | 587.5 (504.0–624.0)5-150 | 1.6 (1.3–2.0) | 57.4 (40.5–70.8) | 34.8 (30.2–39.3)5-150 |
| Adult controls (n=10) | 704.0 (640.0–792.0) | 1.8 (1.5–2.0) | 38.5 (14.0–61.0) | 21.9 (7.8–38.9) |
-
All values were from samples obtained just before blood transfusion and are expressed as the median (range).
-
↵5-150 p < 0.05 v adult controls by the Mann-Whitney U test according to the Kruskal-Wallis test.
-
↵5-151 p < 0.05 v full term infants by the Mann-Whitney U test according to the Kruskal-Wallis test.
-
AA = ascorbic acid.
