Effect of total glucosides of paeony on the changes of IL-4 and ICAM-1 levels in eczema mouse model serum

Effect of total glucosides of paeony on the changes of IL-4 and ICAM-1 levels in eczema mouse model serum was investigated. A total of 38 KM mice of SPF grade were divided into 3 groups: the control group (n=10), the model group (n=15) and the treatment group (n=13). The pathological model of chronic eczema in mouse right ear was induced using dinitrochlorobenzene acetone solution. Two ears of mice in the control group and the left ear of mice in the model and treatment groups were smeared with acetone as control. The mice in the treatment group were treated by administration with total glucoside of paeony. The changes of IL-4 and ICAM-1 levels were measured using caudal vein blood collection. The mouse ear weight was measured and the relationship among IL-4 and ICAM-1 levels, ear thickness and treatment time was analyzed. Mouse ear thickness in the model group was higher than that in the treatment and control groups (P<0.05). The weight of the mouse right ear in the model and treatment groups was significantly higher than that of the left ear (P<0.05). Furthermore, The IL-4 and ICAM-1 levels of mice in the model group were higher than that in the treatment and control groups (P<0.05). The IL-4 and ICAM-1 levels of mice in the model and treatment groups increased compared to that before modeling (P<0.05). The IL-4 and ICAM-1 levels of mice were positively correlated with ear thickness in the model group (r=0.865, P=0.002; r=0.833, P=0.009). In addition, the IL-4 level of mice was positively correlated with the ICAM-1 level in the model group (r=0.812, P=0.014). Finally, IL-4 and ICAM-1 may be involved in the pathologic process of chronic eczema. Therefore, the study showed that the total glucosides of paeony may play a role in the treatment of chronic eczema by regulating the IL-4 and ICAM-1 levels.