Table 2.
Postnatal | Perinatal | Perinatal | ||||
---|---|---|---|---|---|---|
Characteristic | Cu+ | Cu− | Cu+ | Cu− | Cu+ | Cu− |
Age, days | 50 | 50 | 24 | 24 | 13 | 13 |
Body weight, g | 276 ± 17 | 280 ± 20 | 89 ± 1.1 | 45 ± 1.5* | 38.2 ± 1.9 | 31.6 ± 1.7* |
Hemoglobin, g/L | 162 ± 1.7 | 112 ± 25 | 102 ± 3.0 | 53.8 ± 3.5* | 98.0 ± 2.5 | 67.6 ± 2.8* |
Brain Cu, μg/g | 2.55 ± 0.32 | 1.61 ± 0.07* | 2.22 ± 0.07 | 0.29 ± 0.07* | 1.31 ± 0.11 | 0.35 ± 0.04* |
Brain Fe, μg/g | 11.5 ± 0.32 | 11.3 ± 0.94 | 9.03 ± 0.30 | 5.50 ± 0.38* | 6.11 ± 0.28 | 4.10 ± 0.17* |
Plasma Fe, μg/mL | 2.29 ± 0.07 | 1.17 ± 0.21* | 3.01 | 0.34 | ND | ND |
Values are means ± SEM. Postnatal rats (n = 3) were maintained on Cu-adequate (Cu+) or Cu-deficient (Cu−) treatment for 30 days after weaning. Perinatal rats (n = 4) were born to, and nursed by, Cu-deficient or Cu-adequate dams. Treatment began 2 weeks prior to parturition. Brain iron concentration was corrected for blood iron contamination. For suckling rats, plasma iron was a pooled estimate and only available for 24-day-old pups. For a given age, treatment means were tested by unpaired Student's t-test,
p < 0.05.