Figure 1.
YL exhibits an antidepressant-like effect in mice. (a–c) Antidepressant-like effect of YL. YL ((a) 0.1–30 mg/kg, i.p.; (b) 0.1–1.0 nmol/mouse, i.c.v.; (c) 30–100 mg/kg, p.o.) was administered to mice, and the immobility time during a 4-min forced swim test (FST) session was measured 30 min after administration (n = 11; n = 8–9; n = 18, respectively). (d) Antidepressant-like activity of YL was comparable to those of already-known antidepressants. Immobility time during a 4-min FST session was measured after the administration of YL, fluvoxamine, and imipramine (30 mg/kg, i.p.) in mice (n = 7–8). (e) Antidepressant-like effect of YL (10–30 mg/kg, i.p.) in the tail suspension test (TST) (n = 6).