ABSTRACT
Aim To study the anti-inflammatory activ¬ity of diterpenes from Tripterygium wilfordii on lipopo- lysaccharide ( LPS)-induced macrophage and its mech¬anism. Methods MTT assay was used to detect the cytotoxicity of compounds. The Griess method was used to detect the NO on LPS-induced RAW264. 7 cells. ELISA was applied to determine the contents of inter- leukin 6 (IL-6) , tumor necrosis factor a ( TNF-a ) , interleukin lp (IL-lfj) and interleukin 18 (IL-18) in cell culture supernatant. Western blot was used to de¬tect IkBcx, .INK, ERK, p38, STAT3 and their phos-phorylation in LPS-induced RAW264.7, as well as the effect on COX-2, iNOS, NLRP3, caspase-1 , cleaved- caspase-1. Flow cytometry was employed to detect the effects of compounds on the phagocytosis of RAW 264. 7 cells. Results Hypoglicin II (1) and ent-pimara-8 (14) , 15-diene-19-ol (6) , two diterpenoid compounds from Tripterygium wilfordii could effectively inhibit the expression of inflammatory mediators ( COX-2 and iN- OS) and inflammatory cytokines (IL-6, IL-lp, IL- 18) in LPS-induced RAW264. 7 cells. Further re¬search found that the phosphorylation of IkBcx , JNK, ERK, P38, STAT3 and NLRP3 was all inhibited; however, there was no significant effect on the expres¬sion of IkBcx, JNK, ERK, P38 and STAT3. At the same time, they also inhibited the phagocytosis of mac-rophages. Conclusions The anti-inflammatory mecha¬nism of Tripterygium wilfordii diterpenoids 1 and 6 might be through inhibiting the production of NLRP3 inflammatory bodies, inflammatory mediators (COX-2 and iNOS) and inflammatory cytokines (IL-6, IL-lp and IL-18) , which is closely related to inhibiting the activation of MAPK, NF-kB and STAT3 pathway.
ABSTRACT
Objective The aim was to find the correlations between blood glucose (GLU)and atherogenic index of plasma (AIP),high sensitive C reactive protein (HCRP),plasma lipid profiles among physical examination population.Methods The parameters including GLU,HCRP,and plasma lipid profiles were examined by using Olympus AU5400 automatic biochemical analyzer from 9 057 blood samples,and then AIP value was calculated.The t test,Pearson correlation and multivariate logistic regression were used.Results The levels of AIP and HCRP were significantly higher in high glucose group both in males and females (P <0.01).Positive lower correlations were found between GLU and AIP,apolipoprotein B (apoB),HCRP,low density lipoprotein cholesterol (LDL -C),total cholesterol (TC),triglyceride (TG),uric acid (URIC)and apoB/aopA1,while the correlation with AIP was highest (r =0.163,P <0.01 ).There were negative correlations between GLU and apoA1,high density lipoprotein cholesterol (HDL -C).Results of multivariate logistic regression analysis showed that male gender,age,HCRP and AIP were relative factors associated with hyperglycemia. Conclusion There are some differences in the levels of AIP and HCRP between the high glucose people and general people.