Table 4.
E2 and P4 concentrations in serum, midbrain, hippocampus, striatum, and cortex of proestrous rats exposed to the open field (OF) and elevated plus maze (EPM) or partner preference (PP) and social interaction (SI) tasks, with or without paced mating, or non-tested controls.
| OF + EPM | OF + EPM + paced mating | PP + SI | PP + SI + paced mating | Paced mating | Non-tested controls | |
|---|---|---|---|---|---|---|
| E2 | ||||||
| Serum (pg/ml) | 31.9 ± 2.8 | 29.8 ± 3.4 | 29.3 ± 3.7 | 34.1 ± 2.8 | 33.7 ± 2.3 | 25.5 ± 4.1 |
| Midbrain (pg/mg) | 2.2 ± 0.1 | 2.2 ± 0.2 | 2.1 ± 0.1 | 2.0 ± 0.2 | 2.0 ± 0.2 | 2.1 ± 0.1 |
| Hippocampus (pg/mg) | 2.3 ± 0.5 | 2.4 ± 0.3 | 2.7 ± 0.6 | 2.5 ± 0.3 | 2.0 ± 0.1 | 1.8 ± 0.1 |
| Striatum (pg/mg) | 1.9 ± 0.7 | 2.0 ± 0.5 | 1.7 ± 0.6 | 1.7 ± 0.3 | 2.0 ± 0.7 | 1.5 ± 0.2 |
| Cortex (pg/mg) | 1.8 ± 0.2 | 1.5 ± 0.1 | 2.5 ± 0.6 | 2.1 ± 0.2 | 2.2 ± 0.7 | 1.8 ± 0.1 |
| P4 | ||||||
| Serum (ng/ml) | 16.2 ± 1.3 | 19.8 ± 1.8 | 19.7 ± 1.1 | 20.5 ± 1.6 | 20.1 ± 1.5 | 17.5 ± 1.1 |
| Midbrain (ng/mg) | 2.1 ± 0.2 | 1.8 ± 0.3 | 1.9 ± 0.3 | 1.9 ± 0.4 | 1.9 ± 0.1 | 2.4 ± 0.3 |
| Hippocampus (ng/mg) | 1.6 ± 0.2 | 2.1 ± 0.2 | 1.5 ± 0.1 | 1.8 ± 0.2 | 1.7 ± 0.3 | 1.5 ± 0.1 |
| Striatum (ng/mg) | 1.5 ± 0.1 | 1.1 ± 0.2 | 1.5 ± 0.1 | 1.6 ± 0.1 | 1.7 ± 0.1 | 1.6 ± 0.1 |
| Cortex (ng/mg) | 1.8 ± 0.2 | 1.7 ± 0.2 | 1.4 ± 0.2 | 1.4 ± 0.1 | 1.8 ± 0.1 | 1.3 ± 0.1 |