TY - JOUR PY - 2004// TI - Corticosterone increases depression-like behavior, with some effects on predator odor-induced defensive behavior, in male and female rats JO - Behavioral neuroscience A1 - Kalynchuk, Lisa E. A1 - Gregus, Andrea A1 - Boudreau, Daniel A1 - Perrot-Sinal, Tara S. SP - 1365 EP - 1377 VL - 118 IS - 6 N2 - This experiment examined the effect of repeated corticosterone injections on anxiety and depression-like behavior in male and female rats. Rats received either corticosterone or vehicle injections for 21 consecutive days prior to behavioral testing in the forced swim, open-field, and predator odor tests. The corticosterone injections significantly increased depression-like behavior in the forced swim test in both male and female rats but had no significant effect on anxiety in the open-field test. In the predator odor test, the corticosterone injections significantly increased a subset of defensive behaviors in the male rats. These results suggest that repeated exposure to corticosterone increases depression-like behavior, with some effects on anxiety, and that male rats may be more affected than female rats by this manipulation.

Language: en

LA - en SN - 0735-7044 UR - http://dx.doi.org/10.1037/0735-7044.118.6.1365 ID - ref1 ER -