Table 2.
Se biomarker concentrations at delivery and in infant venous cord blood
(numbers and percentages; mean values and standard deviations)
| Biomarkers* | Maternal delivery specimens | Infant venous cord specimens | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| WBSe | Serum Se | SEPP1 | WBSe | SEPP1 | ||||||
| n | % | n | % | n | % | n | % | n | % | |
| n* | 467 | 517 | 677 | 448 | 562 | |||||
| Se biomarker concentration (µg/l) | ||||||||||
| Mean | 133·5 | 68·6 | 2144·0 | 159·2 | 1535·0 | |||||
| sd | 17·8 | 12·8 | 712·0 | 22·0 | 522·8 | |||||
| Minimum, maximum (µg/l) | 80·5, 190·6 | 4·5, 110·3 | 524·8, 4968·4 | 88·1, 233·4 | 117·2, 3800·6 | |||||
| < Threshold* | 12 | 2·6 | 431 | 83·4 | – | 1 | 0·2 | – | ||
| Deficient† | – | 1 | 0·2 | – | – | – | ||||
| C-reactive protein (CRP) maternal delivery plasma, n | 437 | 509 | 672 | 417 | 535 | |||||
| CRP maternal delivery plasma (mg/l) | ||||||||||
| Median | 9 | 8 | 8 | 17 | 8 | |||||
| IQR | 18 | 16 | 18 | 24 | 15 | |||||
| CRP venous cord plasma, n | 272 | 322 | 427 | 348 | 450 | |||||
| CRP venous cord plasma (mg/l) | ||||||||||
| Median | 1 | 1 | 1 | 0·8 | 1 | |||||
| IQR | 1 | 0 | 0 | 0·4 | 0 | |||||
| CRP venous cord plasma (detectable) | 202 | 74 | 254 | 79 | 342 | 80 | 263 | 76 | 356 | 79 |
SEPP1, selenoprotein P; IQR, inter-quartile range.
*
WBSe above threshold defined as concentrations ≥ 100 µg/land serum Se ≥ 80 µg/l.
†
Deficiency defined as serum Se < 30 µg/l.