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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.