ABSTRACT
AIM: To study the anti-inflammatory and analgesic effects of total saponin of Dioscorea(TSD). METHODS: The rat acute gouty arthritis (AGA) and the mice air-pouch inflammation models were induced by monosodium urate(MSU), the pain models were adopted including the hot-plate and acetic acid-induced writhing test in mice. Then the content of IL-1β, IL-18 and PGE2 levels were determined by ELISA. RESULTS:TSD significantly inhibited the MSU-induced ankle swelling and air pouch inflammation in mice(P<0.01 or P<0.05). Meanwhile, TSD markedly reduced the levels of IL-1β and IL-18 in synovial fluid exudates and IL-1β and PGE2 in air pouch exudates (P<0.01 or P<0.05).In addition, TSD remarkably suppressed acetic acid-induced writhing response and prolonged pain threshold in hot plate assay(P<0.01 or P<0.05).CONCLUSION: TSD has anti-inflammatory and analgesic effects, which are mainly relevant to the inhibition of the synthesis and release of inflammatory factors IL-1β, IL-18 and PGE2.
ABSTRACT
Aim Toinvestigatetheeffectsoftotalsap-onin of Dioscorea (TSD)on rats with monosodium u-rate crystal-induced acute gouty arthritis (AGA)and mechanisms.Methods Totally72Wistarratswere randomly devided into six groups,Each group was giv-en corresponding drug before,then rat acute gouty ar-thritis model was made by injection of monosodium u-rate in the ankle joint cavity.The gait,articular swell-ing degree and physiological changes of rats were ob-served.The concentration of TNF-α,IL-1β,IL-18 in serum were detected by ELISA.The levels of pro-IL-1β, NALP3, ASC, pro-caspase-1, and cleaved caspase-1 were detected by Western blot.Results AllTSDgroupsandcolchicinesignificantlychangedthe gait of rats and TSD high and middle groups signifi-cantly reduced joint swelling and diminished the patho-logical changes.The levels of TNF-α,IL-1β,IL-18 in serum were significantly decreased,and the levels of pro-IL-1β,NALP3,ASC,pro-caspase-1 and cleaved caspase-1 were apparently reduced in TSD high and middlegroups.Conclusion TSDpossessesanti-goutfunction and the mechanism may be related to sup-pressing the NALP3 inflammasome activation and in-hibiting the cytokine production.
ABSTRACT
Aim To investigate the rationality and the dose of TSD combined with TSA on reducing serum uric acid and anti-inflammatory.Methods Mice hyperuricemic models were made by uric acid intraperitoneal injection or yeast extract paste intragastric administration.Mice ear swelling model was induced by locally painting dimethylbenzene.Optimized combination dosage of TSD and TSA was obtained using the Codrug software.Results In the mice hyperuricemic models,the serum uric acid in TSD group,TSD plus TSA group and positive control groups was significantly reduced compared with the model group(P