Abstract
Exposure of female Wistar rats to a signalled unpredictable 5-day stress regimen induced extreme plasma corticosterone elevation at all four stages of the estrous cycle. The corticosterone level at proestrus was significantly higher than at the other three stages of the cycle in both control and stressed groups. This rise in plasma corticosterone became evident only in late proestrus. It was observed that the estrous cycles of 50% of the rats became desynchronized over the 5-day stress period; a steroid hormone imbalance is suggested as a possible factor contributing to this desynchrony.
Original language | English |
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Pages (from-to) | 103-108 |
Number of pages | 6 |
Journal | Behavioral Biology |
Volume | 14 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1975 |