Antioxidant, Anti-inflammatory and Immunostimulatory Activity of Polysaccharide from Artemisiae Argyi Folium

As the traditional Chinese medicine, artemisiae argyi folium has various functions such as analgesia, antitumor, and anti-hypertension. To study antioxidant activity in vitro and cell-based anti-inflammatory activity of artemisiae argyi folium polysaccharide (AAFP). The antioxidant activity of AAFP was investigated by ABTS(+)center dot clearance rate, DPPH center dot clearance rate,center dot OH clearance rate and FRAP assays. The lipopolysaccharide-induced RAW264.7 cell inflammation model was established to assess its anti-inflammatory activity. The results showed that the AAFP had strong antioxidant activity and the IC50 on ABTS radicals, DPPH radicals, hydroxyl radicals, and the ferric reducing antioxidant power were 74.41, 268.5, 350.2 mu g/ml and the FRAP value was 163.5 mu g/ml. MTT experiments showed IC50 of AAFP was 441.5 mu g/ml. The quantitative polymerase chain reaction demonstrate the pro-inflammatory activity of AAFP. Immunological assay showed that AAFP significantly promoted lymphocyte proliferation. AAFP have huge potential to be developed as functional foods and medicines.