Table 1.
Standard | RT (min) | MRM mass transition m/z | Average estimated PG concentration |
---|---|---|---|
PGA1 | 13.5 | 335/273 | ND |
PGA2 | 13.3 | 333/189 | ND |
PGD2 | 12.6 | 351/189 | ND |
PGE1 | 12.4 | 353/317 | 70 ± 21 pg/ml |
PGE2 | 12.3 | 351/189 | 638 ± 235 pg/ml |
6-keto-PGF1α | 10.7 | 369/245 | ND |
PGF1α | 11.9 | 355/311 | 38 ± 8 pg/ml |
PGF2α | 11.9 | 353/193 | 654 ± 269 pg/ml* |
8-iso-PGF2α | 11.5 | 353/193 | 50 ± 6 pg/ml* |
PGF3α | 11.3 | 351/191 | ND |
ND, not determined because most HFF samples had low or undetectable PG concentration. Mean ± standard error of the mean (SEM) is shown. Average estimated concentration is in picograms (pg) per milliliter (ml) of HFF, assuming a 50% extraction/detection efficiency (see Methods). HFF was concentrated 10-fold in 80% MeOH prior to analysis. RT, Retention Time in minutes.
this peak may contain multiple 15-F2-isoprostanes (see Discussion).