The antidepressant effects of asperosaponin Ⅵ are mediated by the suppression
of microglial activation and reduction of TLR4/NF-ĸB induced IDO expression

2.2 LPS administration and pharmacological intervention

The asperosaponin Ⅵ (ASA Ⅵ) standard (purity = 99.92%) was 
purchased from Chengdu Alfa Biotechnology Co., Ltd. The 
asperosaponin Ⅵ was dissolved in saline. To produce the model, 
lipopolysaccharide (LPS) (0.83 mg/kg) was administered 
intraperitoneally to mice. The control mice were administered with 
author/funder. It is made available under a CC-BY-NC-ND 4.0 International license.
equivoluminal saline. Both control mice and model mice were received 
ASA Ⅵ (10 mg/kg, 20mg/kg, 40mg/kg and 80mg/kg, i.p.) thirty minutes 
prior to LPS injection. Following the behavioral analysis,
immunocytochemistry, RT-PCR analysis, ELISA and western blot 
analysis were performed.