Table 3.
Plasma phosphatidylethanolamine sn‐1, 2 ester‐linked molecular species composition in men and women
| Proportion of total PtdEtn molecular species (%) | t‐Test | ||
|---|---|---|---|
| Molecular species | Men | Women | p |
| PtdEtn16:0_18:1 | 0.63 ± 0.09 | 0.84 ± 0.12 | 0.162 |
| PtdEtn16:0_18:2 | 0.99 ± 0.20 | 0.99 ± 0.07 | 0.984 |
| PtdEtn16:0_20:4 | 1.17 ± 0.19 | 1.43 ± 0.18 | 0.319 |
| PtdEtn16:0_22:6 | 1.81 ± 0.34 | 1.82 ± 0.35 | 0.988 |
| PtdEtn18:0_18:1 | 0.75 ± 0.11 | 0.92 ± 0.10 | 0.274 |
| PtdEtn18:0_18:2 | 3.38 ± 0.61 | 3.33 ± 0.32 | 0.948 |
| PtdEtn18:0_20:3 | 0.31 ± 0.06 | 0.37 ± 0.05 | 0.446 |
| PtdEtn18:0_20:4 | 4.29 ± 0.62 | 5.03 ± 0.84 | 0.491 |
| PtdEtn18:0_20:5 | 0.23 ± 0.04 | 0.30 ± 0.03 | 0.187 |
| PtdEtn18:0_22:4 | 0.05 ± 0.01 | 0.12 ± 0.03 | 0.076 |
| PtdEtn18:0_22:5 | 0.13 ± 0.02 | 0.16 ± 0.02 | 0.296 |
| PtdEtn18:0_22:6 | 0.94 ± 0.18 | 1.17 ± 0.18 | 0.373 |
| PtdEtn18:1_18:2 | 0.91 ± 0.17 | 0.78 ± 0.07 | 0.483 |
| PtdEtn18:1_20:4 | 0.77 ± 0.11 | 0.72 ± 0.08 | 0.763 |
| PtdEtn18:1_22:6 | 0.18 ± 0.03 | 0.16 ± 0.03 | 0.715 |
| Total | 16.54 ± 2.37 | 18.50 ± 1.86 | 0.601 |
Values are mean ± SEM (n = 10 per sex) proportions of individual molecular species in total plasma PtdEtn (sn‐1 fatty acid / sn‐2 fatty acid). Comparisons of means between sexes were by Student's unpaired t‐test with adjustment for multiple testing using the Holm‐Šídák method (all adjusted P values were nonsignificant and are not shown). Molecular species are ranked by increasing number of carbons and degree of unsaturation of the putative sn‐1 fatty acid.