TABLE 2.
Longitudinal measurements of TDZ, FAZ, TAZ, and TDP together with corresponding model-predicted absorbed zinc, measured-to-predicted absorbed zinc ratio, and phytate-to-zinc MRs in pregnant and lactating Guatemalan women1
| Phase 1 (first trimester of pregnancy) |
Phase 2 (third trimester of pregnancy) |
Phase 3 (2 mo of lactation) |
Phase 4 (6 mo of lactation) |
|||||
| Control | LP | Control | LP | Control | LP | Control | LP | |
| TDZ, mg/d | 9.3 ± 3.52 | 10.9 ± 4.1 | 10.4 ± 3.2 | 11.5 ± 3.0 | 12.8 ± 4.1 | 12.9 ± 3.6 | 11.1 ± 2.7 | 10.8 ± 4.1 |
| FAZ | 0.22 ± 0.10 | 0.25 ± 0.10 | 0.32 ± 0.15 | 0.32 ± 0.13 | 0.34 ± 0.12 | 0.40 ± 0.07 | 0.26 ± 0.11 | 0.37 ± 0.12 |
| TAZ, mg/d | 1.87 ± 0.70 | 2.76 ± 1.49 | 3.12 ± 1.37 | 3.57 ± 1.38 | 4.53 ± 2.94 | 5.04 ± 1.63 | 3.01 ± 1.72 | 3.84 ± 1.66 |
| TAZ, predicted, mg/d | 2.12 | 3.25 | 2.20 | 3.13 | 2.28 | 3.28 | 2.20 | 2.90 |
| TAZ, measured:predicted | 0.88 | 0.85 | 1.42 | 1.14 | 1.99 | 1.54 | 1.37 | 1.32 |
| TDP, mg/d | 1880 ± 776 | 728 ± 353 | 2071 ± 791 | 954 ± 468 | 2636 ± 773 | 1040 ± 610 | 2290 ± 1016 | 1071 ± 560 |
| Phytate:zinc MR | 20.1 ± 6.4 | 6.6 ± 2.7 | 19.9 ± 4.8 | 8.6 ± 4.4 | 20.7 ± 3.2 | 8.9 ± 8.2 | 20.7 ± 7.8 | 11.1 ± 6.9 |
1
Control (habitual high-phytate diet), n = 8, and LP, n = 14. FAZ, fractional absorption of zinc; LP, low phytate; MR, molar ratio; TAZ, total absorbed zinc; TDP, total dietary phytate; TDZ, total dietary zinc.
2
Mean ± SD (all such values).