Changes and correlation of inflammatory polarization and Notch pathway in rats with adjuvant arthritis

Objective:To investigate the relationship between inflammatory polarization and Notch pathway in rats with adjuvant arthritis.Methods:Twelve rats were randomly divided into normal(NC)group(n=6)and model(MC)group(n=6).In the model group,complete Freund's adjuvant(0.1ml/rat)was injected into the right hindfoot to induce inflammation.On the 12th day after inflammation,the changes of plantar swelling degree(E)and arthritis index(AI)were observed,and the expressions of inflammatory polarization markers CD68 and CD206 in peripheral blood were detected by flow cytometry.PCR was used to detect the expression of factors related to Notch signal pathway in peripheral blood.Results:Compared with the normal group,the expression of E,AI,CD68,Notch2,Notch3,Notch4 and Delta1 in the model group increased significantly,while the expression of CD206,Notch1,Jagged1 and Jagged2 decreased(P<0.01or P<0.05).The results showed that CD68,toe swelling degree and arthritis index were negatively correlated with Notch1,Jagged1 and Jagged2,CD68,toe swelling degree and arthritis index were positively correlated with Notch2,Notch4 and Delta1,CD206 was positively correlated with Notch1 and Jagged1,Jagged2 and CD206 was negatively correlated with Notch2,Notch4 and Delta1.Conclusion:Notch signal pathway may promote the occurrence and development of AA by regulating inflammatory polarization of macrophages.

Abnormal expression and significance of circ-CBLB/miR-486-5p in patients with rheumatoid arthritis of spleen deficiency and dampness excess type

Objective:To explore the abnormal expression and significance of circ-CBLB/miR-486-5p in patients with rheumatoid arthritis of spleen deficiency and dampness excess type.Methods:The 30 healthy individuals included in the method were from the Physical Examination Center of Anhui Provincial Hospital of Traditional Chinese Medicine,and the 60 rheumatoid arthritis patients included were from the First Affiliated Hospital of Anhui University of Traditional Chinese Medicine.The disease activity score of patients with rheumatoid arthritis was evaluated using VAS score and DAS28 score,joint symptoms and spleen deficiency syndrome score were evaluated using graded quantification method,immune inflammation indicators were detected using relevant instruments,inflammatory cytokines were detected using ELISA method,macrophage markers were detected using FCM method,and pathway gene expression was detected using RT-qPCR;Evaluate the predictive effect of circ-CBLB and miR-486-5p on disease activity in rheumatoid arthritis using ROC curves.Results:(1)miR-486-5p,CD14^(+)CD86^(+),ESR,CRP,RF,Anti CCP Ab,IL-6,TNF in patients with rheumatoid arthritis-αThe levels of circ-CBLB,CD14^(+)CD163^(+),IL-4,and IL-10 were significantly higher than those of healthy individuals;(2)The expression level of circ-CBLB in patients with rheumatoid arthritis is positively correlated with CD14^(+)CD163^(+),and negatively correlated with miR-486-5p and CD14^(+)CD86^(+);The expression level of miR-486-5p is negatively correlated with CD14^(+)CD163^(+)and positively correlated with CD14^(+)CD86^(+);There is a negative correlation between CD14^(+)CD86^(+)and CD14^(+)CD163^(+);ESR is negatively correlated with circ-CBLB,and positively correlated with miR-486-5p,CD14^(+)CD86^(+),CRP;CRP is negatively correlated with circ-CBLB,CD14^(+)CD163^(+),and positively correlated with CD14^(+)CD86^(+),ESR;(3)The expression level of circ-CBLB in patients with rheumatoid arthritis is negatively correlated with joint tenderness,morning stiffness,lack of qi and lazy speech,and postprandial abdominal distension score;The expression level of miR-486-5p is positively correlated with the scores of joint tenderness and decreased appetite.(4)The ROC curve shows that in terms of circ-CBLB,ESR,CRP,VAS,and DAS28 AUC are 0.662(P=0.032),0.658(P=0.035),0.516(P=0.830),and 0.791(P=0.000),respectively.In terms of miR-486-5p,ESR,CRP,VAS,and DAS28 AUC were 0.566(P=0.385),0.511(P=0.883),0.592(P=0.223),and 0.727(P=0.003),respectively.Conclusion:The abnormal expression of circ CBLB and miR-486-5p in peripheral blood mononuclear cell of patients with rheumatoid arthritis of spleen deficiency and dampness excess type is related to inflammatory polarization markers,immune inflammation,disease activity,joint symptoms and spleen deficiency syndrome of rheumatoid arthritis,and the low expression of circ CBLB and high expression of miR-486-5p have certain predictive value for disease activity of rheumatoid arthritis.