Inhibitory effects of acteoside on LPS-induced inflammatory response on BV-2 microglial cells Astragaloside IV regulates STAT1/IκB/NF-κB signaling pathway to inhibit activation of BV-2 cells Research progress on natural products with anti-neuroinflammation Realgar is active ingredient of Angong Niuhuang pill in protection against LPS-induced neuroinflammation