Figure 4.

Enzyme-linked immunosorbent assay (ELISA) analysis showed that: (A) lipopolysaccharide (LPS) induced nerve growth factor (NGF) and thymic stromal lymphopoietin (TSLP) expression in HPAEpiC cells; (B) adding recombinant exogenous soluble Toll receptor-like 4 (sTLR4; T1 and T2) attenuated the Xiao-Qing-Long-Tang (XQLT)-inhibited NGF and TSLP expression in Dermatophagoides pteronyssinus group 2 (Der p 2)-stimulated HPAEpiC cells; however, adding LPS (L100 and L200) attenuated only the inhibitory effect of XQLT on TSLP expression. Values represent the mean ± standard deviation. P<0.05, statistics of all groups were versus the cells stimulated with Der p 2 alone (D). Each test is triplicate and was repeated at least three times. ^*P<0.05, ^**P<0.01, ^***P<0.005.