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Table 1 Litter size, feto-placental growth and placental protein measurements.

From: Estrogen receptors alpha and beta in rat placenta: detection by RT-PCR, real time PCR and Western blotting

Days gestation (dg)

Litter number

Placentae weights (g)

Fetal body weights (g)

Protein concentration (mg/g wet wt)

Protein content (mg/tissue)

16

12 ± 1

0.313 ± 0.010

0.513 ± 0.016

90.904 ± 3.559

28.489 ± 1.893

19

11 ± 1

0.508 ± 0.012*

2.371 ± 0.060*

98.004 ± 3.476

49.709 ± 1.014*

21

9 ± 1*

0.546 ± 0.007*

5.387 ± 0.166*

95.307 ± 3.713

52.053 ± 2.037*

  1. Values are mean ± S.E.M. for four different dams. A significant increase (p < 0.001) in placental and fetal body weights during gestation and a significant decrease (p < 0.001) in litter number between 16 and 21 dg was detected. Placental protein concentration was measured using the Bradford method; a significant increase in protein content was observed between 16 and 19 dg and 16 and 21 dg (*p < 0.001; LSD test).
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Reproductive Biology and Endocrinology

ISSN: 1477-7827

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