TABLE 4.
Comparison of the mean count of peptides from select milk proteins and potentially milk proteins between preterm infants at 8/9 DOL, preterm infants at 21/22 DOL, and term infants at 8/9 DOL1
| Preterm 8/92 | Preterm 21/222 | Term2 | |
|---|---|---|---|
| n = 12 | n = 11 | n = 10 | |
| Immunoglobulins | 916 ± 45 | 987 ± 29.6 | 972 ± 30.3 |
| Lactoferrin | 789 ± 58.5 | 945 ± 26.6* | 916 ± 38.6 |
| Serum albumin | 269 ± 14.7 | 309 ± 10 | 299 ± 8.7 |
| PIgR | 256 ± 16 | 302 ± 8.1* | 300 ± 9.4* |
| Proteases | 136 ± 7.9 | 159 ± 5 | 146 ± 6.4 |
| Tenascin | 136 ± 8.9 | 159 ± 5.6 | 144 ± 6.8 |
| Xanthine dehydrogenase | 103 ± 8 | 128 ± 5.6* | 125 ± 4.1 |
| Nutrient-binding proteins | 111 ± 5.7 | 115 ± 3.9 | 120 ± 4.4 |
| Mucins | 89.1 ± 7.7 | 111 ± 4.1* | 106 ± 4.9 |
| Bile salt-stimulated lipase | 87.2 ± 5.1 | 90.3 ± 4 | 89 ± 3.19 |
| α-Amylase | 70.2 ± 3.6 | 78.7 ± 3.5 | 74.5 ± 3.5 |
| Antiproteases | 59.3 ± 2.6 | 60 ± 2.2 | 58.5 ± 1.8 |
| α-Lactalbumin | 28.3 ± 3 | 32.9 ± 1.7 | 34.6 ± 1.7 |
| Caseins | 21.2 ± 2.7 | 26.5 ± 1.5 | 26.6 ± 1.4 |
1
Data are represented as mean ± SE.
*
Indicates the mean is significantly different from the mean for preterm 8/9 in the same row, P < 0.05.
2
Count units are the number of unique peptide sequences.
DOL, days of life; PIgR, polymeric Ig receptor.