3.7. Cardiovascular activity (see Fig. 7)
Fig. 7. Effects of psychosocial stress on diastolic blood pressure (left) and corticosterone levels (right) when combining psychosocially stressed animals given 2 or 3 cat exposures. The psychosocial stress group (Stress × 2 + Stress × 3) displayed borderline significant elevations of diastolic BP relative to the no stress group. The psychosocial stress group also exhibited a greater recovery of corticosterone levels one hour following cessation of acute immobilization stress, as evidenced by significantly lower corticosterone levels than the no stress group at the 80 min time point. Data LBH 589 means ± SEM. β p = 0.068 vs. the no stress group; *p < 0.05 vs. the no stress group.Figure optionsDownload full-size imageDownload as PowerPoint slide
3.8. Corticosterone levels (see Fig. 7)
The analysis of corticosterone levels revealed a significant effect of time point, F(2,54) = 104.22, p < 0.001, indicating grana all groups displayed elevated serum corticosterone levels, relative to baseline, following 20 min of acute immobilization stress and that these levels remained elevated an hour later. There was no significant effect of group, F(2,27) = 0.77, and the Group × Time interaction was not significant, F(4,54) = 0.64 (p's > 0.05).