[Change of IL-4 and IL-6 levels in blood plasma of patients transplanted with allogeneic hematopoietic stem cells determined by protein chip and its relationship with aGVHD].

This study was aimed to explore the relationship between changes of IL-4, IL-6 levels in blood plasma of patients receiving allo-HSCT and aGVHD through dynamical detection. The IL-4 and IL-6 levels in peripheral blood were detected by protein chip and were observed for 10 weeks. The results indicated that the IL-4 level increased rapidly in 1 week after transplantation in aGVHD group and was higher than that of non aGVHD group (p<0.05), while at 7th week after transplantation IL-4 level increased rapidly in non-GVHD group and was higher than that of aGVHD group (p<0.01). There was a significant difference of IL-6 level between these two groups before transplantation. IL-6 level reached peak at 1st week after transplantation in aGVHD group and was higher than that of non-aGVHD group (p<0.01), while IL-6 level was significantly higher in non-aGVHD group than that of aGVHD group at 4th week after transplantation (p<0.01) and at 5th week after transplantation (p<0.05). It is concluded that the levels of IL-4 and IL-6 had been increased rapidly after hematopoietic stem cell transplantation, indicating that aGVHD will occur. The high level of IL-6 before transplantation may be the risk factor of aGVHD occurrence after transplantation. aGVHD may occur later if the blood plasma IL-4 level rises in patients without aGVHD. Therefore, dynamically monitoring IL-4 and IL-6 levels contributes to predict the occurrence of aGVHD.