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Table 2 PBDE levels in placental tissue, umbilical cord blood as well as fetal and maternal perfusate.

From: Placental transfer of the polybrominated diphenyl ethers BDE-47, BDE-99 and BDE-209 in a human placenta perfusion system: an experimental study

  BDE-47 BDE-99 BDE-209 Lipid content (%)
Cotyledon (perfused tissue) (ng/g lw) 47.9
(32.0-61.0)
73.0
(38.6-98.5)
107.8
(64.2-159.5)
1.14
(1.10-1.21)
Surrounding placental tissue (ng/g lw) 16.8
(10.7-21.04)
22.4
(16.2-27.5)
22.2
(16.3-31.8)
1.14
(1.03-1.22)
Non-perfused placental tissue (ng/g lw) 0.84
(0.57-1.16)
0.38
(< 0.11-0.75)
< LOQ 1.10
(0.95-1.34)
Umbilical cord plasma
(ng/g lw)
2.37
(0.41-3.77)
1.78
(1.09-3.09)
< LOQ 0.33
(0.29-0.40)
Umbilical cord plasma
(ng/g ww)
0.0078
(0.0047-0.0108)
0.0058
(0.0034-0.0089)
< LOQ 0.33
(0.29-0.40)
Fetal perfusate,
t = 240 min (ng/ml)
0.071
(0.050-0.094)
0.052
(0.030-0.076)
< LOQ n.a.
Maternal perfusate, t = 240 min (ng/ml) 0.15
(0.12-0.18)
0.21
(0.13-0.31)
0.50a
(0.46-0.58)
n.a.
  1. Mean and range of PBDE levels in placental tissue, umbilical cord plasma as well as in maternal and fetal perfusate at steady state. Lipid weight basis: ng/g lw, wet weight basis: ng/g ww. (n = 4).
  2. LOQ: Limit of quantification. n.a.: not applicable; aone high outlier was removed.