Table 10.
Levels of Phytoestrogens in Maternal Plasma, Cord Plasma, and Amniotic Fluid
| Mean (range), nMa |
|||||||
|---|---|---|---|---|---|---|---|
| Cord plasma |
Amniotic fluid |
||||||
| Analyte | Maternal plasma, total | Unconjugated and sulfates | Glucuronides and sulfoglucuronides | Total | Unconjugated and sulfates | Glucuronides and sulfoglucuronides | Total |
| Genistein | 83.9 | 15.7 | 150 | 165 | 10.2 | 53.8 | 64 |
| (9.16–303) | (3.51–37.3) | (35.6–387) | (39.8–417) | (2.93–24.4) | (3.86–198) | (11.4–212) | |
| Daidzein | 45.5 | 7.94 | 50.8 | 58.8 | 13.5 | 54.3 | 67.8 |
| (2.04–243) | (1.09–15.1) | (8.84–122) | (10.2–137) | (2.11–29.4) | (5.03–143) | (15.6–156) | |
| O-Demethylangolensin | 31.2 | 11.2 | 12.9 | 24.1 | 3.09 | 20.5 | 23.6 |
| (1.25–194) | (1.02–48.9) | (0–60.8) | (1.02–110) | (0–6.0) | (0.25–92.5) | (2.86–98.5) | |
| Equol | 71.1 | 11.5 | 39.4 | 50.9 | 3.80 | 64.2 | 68.0 |
| (0.63–401) | (0–48.0) | (0–219) | (0–267) | (0–12.1) | (0.13–385) | (0.13–397) | |
| Total isoflavones | 232 | 46.4 | 253 | 299 | 30.6 | 193 | 223 |
| (19.2–744) | (10.1–96.6) | (47.4–735) | (57.8–831) | (6.77–65.2) | (26.8–740) | (51.5–779) | |
a
To convert from nM to µg/L unconjugated equivalents, multiple by: genistein 0.27, daidzein 0.25, O-demethylangolensin 0.26, and equol 0.25. From Adlercreutz et al. (1999).