Table 1.
Plasma phosphatidylcholine sn‐1,2 ester linked molecular species composition in men and women
| Proportion of total PtdCho molecular species (%) | t‐Test | |||
|---|---|---|---|---|
| Molecular species | Men | Women | p‐value | Adjusted p‐value |
| PtdCho14:0_18:2 | 0.01 ± 0.01 | 0.01 ± 0.01 | 0.184 | >0.999 |
| PtdCho14:0_20:4 | 0.04 ± 0.01 | 0.04 ± 0.01 | 0.700 | >0.999 |
| PtdCho14:0_22:6 | 0.03 ± 0.01 | 0.03 ± 0.01 | 0.443 | >0.999 |
| PtdCho15:0_20:4 | 0.04 ± 0.01 | 0.04 ± 0.01 | 0.804 | 0.131 |
| PtdCho15:0_22:6 | 0.01 ± 0.01 | 0.02 ± 0.01 | 0.196 | >0.999 |
| PtdCho16:0_18:1 | 12.89 ± 0.33 | 13.41 ± 0.53 | 0.413 | >0.999 |
| PtdCho16:0_18:2 | 23.80 ± 0.81 | 22.30 ± 0.60 | 0.155 | >0.999 |
| PtdCho16:0_20:3 | 7.05 ± 0.23 | 6.73 ± 0.19 | 0.305 | >0.999 |
| PtdCho16:0_20:4 | 7.29 ± 0.43 | 7.50 ± 0.41 | 0.728 | >0.999 |
| PtdCho16:0_20:5 | 0.96 ± 0.12 | 0.91 ± 0.06 | 0.706 | >0.999 |
| PtdCho16:0_22:6 | 3.71 ± 0.33 | 6.10 ± 0.53 | 0.002 | 0.013 |
| PtdCho17:0_18:1 | 0.21 ± 0.01 | 0.17 ± 0.01 | 0.004 | >0.999 |
| PtdCho17:0_18:2 | 0.60 ± 0.03 | 0.43 ± 0.01 | 0.001 | >0.999 |
| PtdCho17:0_20:3 | 0.10 ± 0.0 | 0.09 ± 0.01 | 0.109 | >0.230 |
| PtdCho17:0_20:4 | 0.22 ± 0.02 | 0.20 ± 0.02 | 0.558 | >0.999 |
| PtdCho17:0_22:6 | 0.08 ± 0.01 | 0.05 ± 0.01 | 0.071 | 0.963 |
| PtdCho18:0_16:0 | 0.11 ± 0.01 | 0.09 ± 0.01 | 0.153 | >0.999 |
| PtdCho18:0_18:1 | 1.54 ± 0.12 | 1.55 ± 0.12 | 0.990 | >0.999 |
| PtdCho18:0_18:2 | 12.65 ± 0.56 | 11.75 ± 0.56 | 0.275 | >0.999 |
| PtdCho18:0_20:1 | 0.02 ± 0.01 | 0.02 ± 0.01 | 0.236 | >0.999 |
| PtdCho18:0_20:2 | 0.14 ± 0.01 | 0.13 ± 0.01 | 0.383 | 0.969 |
| PtdCho18:0_20:3 | 1.14 ± 0.13 | 1.29 ± 0.19 | 0.511 | 0.927 |
| PtdCho18:0_20:4 | 4.19 ± 0.28 | 4.51 ± 0.22 | 0.374 | 0.832 |
| PtdCho18:0_20:5 | 0.66 ± 0.06 | 0.70 ± 0.04 | 0.634 | 0.996 |
| PtdCho18:0_22:4 | 0.09 ± 0.01 | 0.10 ± 0.01 | 0.435 | >0.999 |
| PtdCho18:0_22:5 | 0.38 ± 0.03 | 0.39 ± 0.03 | 0.100 | 0.826 |
| PtdCho18:0_22:6 | 1.07 ± 0.09 | 1.12 ± 0.09 | 0.728 | >0.999 |
| PtdCho18:1_18:2 | 7.19 ± 0.23 | 6.84 ± 0.19 | 0.254 | >0.999 |
| PtdCho18:1_20:4 | 1.58 ± 0.08 | 1.43 ± 0.06 | 0.179 | >0.999 |
| PtdCho18:1_22:6 | 0.25 ± 0.02 | 0.17 ± 0.01 | 0.007 | >0.999 |
| PtdCho18:2_18:2 | 7.47 ± 0.44 | 7.65 ± 0.42 | 0.759 | >0.999 |
| PtdCho19:0_18:2 | 0.06 ± 0.01 | 0.05 ± 0.01 | 0.012 | >0.999 |
| PtdCho20:0_16:0 | 0.01 ± 0.01 | 0.01 ± 0.01 | 0.818 | >0.999 |
| PtdCho20:4_14:1 | 0.01 ± 0.01 | 0.01 ± 0.01 | 0.908 | >0.999 |
| Total | 95.60 ± 0.22 | 95.86 ± 0.21 | 0.401 | >0.999 |
Values are mean ± SEM (n = 10 per sex) proportions of individual molecular species in total plasma PtdCho. Comparisons of means between sexes were by Student's unpaired t‐test after adjustment for multiple testing using the Holm‐Šídák method. Molecular species are ranked by increasing number of carbons and degree of unsaturation of the putative sn‐1 fatty acid.