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. 2015 Sep 1;5(9):e632. doi: 10.1038/tp.2015.136

Figure 1.

Figure 1

Antidepressant effects of R-ketamine and S-ketamine in social defeat stress and LH models of depression. (a) The schedule of social defeat stress model and behavioral tests after treatment. (b) One percent SPT was performed 1 day after a single dose of saline, R-ketamine (10 mg kg−1) or S-ketamine (10 mg kg−1) (one-way ANOVA, F3,42=11.05, P=0.002). (ce) Behavioral tests, including LMT (F3,35=0.038, P=0.99), TST (F3,34=12.046, P<0.001) and FST (F3,34=13.235, P<0.001), were performed 2 days after a single dose. (f) SPT was performed 6 days after a single dose (F3,34=9.974, P<0.001). (g, h) TST (F3,32=12.019, P<0.001) and FST (F3,32=14.479, P<0.001) were performed 7 days after a single dose. Data are shown as mean±s.e.m. (n=8–11). *P<0.05, and ***P<0.001. (i) The schedule of learned helplessness (LH) model and behavioral tests after treatment. (j, k) The failure of LH (one-way ANOVA, F2,15=3.903, P=0.043) and the escape latency of LH (F2,15=4.317, P=0.033) were measured 5 days after a single dose of saline, R-ketamine (20 mg kg−1) or S-ketamine (20 mg kg−1). Data are shown as mean±s.e.m. (n=6). *P<0.05. ANOVA, analysis of variance; FST, forced swimming test; IES, inescapable electric foot shock; LH, learned helplessness; LMT, locomotion test; NS, not significant; PS, post-shock test; SPT, sucrose preference test; TST, tail suspension test.