Table 1.
Food intake following infusions of vehicle and 2.5 μg estradiol (E2) in rats with misplaced cannulae that failed to target the indicated brain areas.
Brain area | Vehicle | 2.5 μg E2 | t-test results |
---|---|---|---|
MPOA | 19.5 ± 0.6 g | 20.4 ± 1.0 g | t(4) = 0.702, p = 0.52 |
ARC | 23.1 ± 0.8 g | 22.7 ± 0.8 g | t(2*) = 1.245, p = 0.34 |
DRN | 21.9± 1.2 g | 21.0 ± 1.6 g | t(6) = 1.073, p = 0.32 |
PVN | 20.9 ± 0.6 g | 22.1 ± 2.1 g | t(2) = 0.831, p = 0.49 |
LH | 20.1 ± 2.0 g | 22.0 ± 1.7 g | t(2) = 2.495, p = 0.12 |
VMH | 22.9 ± 0.9 g | 21.8 ± 0.7 g | t(4) = 0.918, p = 0.41 |
Combined Nuclei | 21.5 ± 0.5 g | 21.5 ± 0.6 g | t(25*) = 0.008, p = 0.99 |
Data are presented as mean ± SEM. Group differences were assessed via dependent t-tests, which are presented in the last column. Twenty-four h food intake was similar following microinfusions of vehicle or E2 in these rats with misplaced cannulae.
One rat with a misplaced cannula in the ARC was excluded from the ARC and combined nuclei analyses because the cannula extended into the third ventricle and, as expected, reduced 24-h food intake.
Abbreviations: MPOA = medial preoptic area; ARC = arcuate nucleus; DRN = dorsal raphe nucleus; PVN = paraventricular nucleus; LH = lateral hypothalamus; VMH = ventromedial hypothalamus.