RESUMO
Objective To explore the effects of mangiterin on behaviors and brain-derived neurotrophic factor(BDNF) of hippocampus in chronic stress depression mice.Methods 60 male mice were randomly divided into normol control group,model group,fluoxetin control group and mangiterin groups (low,medium and high dose),10 mice in each group.All mice except normal control group were singly housed and subjected to chronic stress-induced depression model for 21 consecutive days.The behaviors of mice were detected by open-field test and tail-suspension test.The expression of BDNF in the hippocampus were assessed using western blot.Results Compared with the normal group,mice exposed chronic stress showed decreased body weight((5.33 ±1.20) g),crossing lines (102 ± 18) and distances ((3425 ± 112) mm) notably decreased in open-field behavior test.The duration of immobility during tail-suspension was increased significantly.BDNF expression in the hippocampus(0.45 ± 0.03) was downregulated significantly(P＜ 0.01),while it was upregulated in the groups of mangiterin(P ＜ 0.01).Mangiterin group in high dose had the similar effects to fluoxetin group(P ＞ 0.05).Conclusion Mangiterin can ameliorate behavior impairment of chronic stress induced-depression mice and it may be related to the upregulation of BDNF expression in the hippocampus.