IL6 and psoriasis: Liu et al. (Liu et al., 2018) investigated the therapeutic effect and mechanism of C. kwangsiensis extracts on psoriasis and showed that C. kwangsiensis extract reduced the dendritic cell expression of lymphatic homing chemokine receptor CCR7 and its ligand CCL21 while also significantly reducing the activity of pro-inflammatory cytokines (IL-12, IL-6 and IL-1β), as well as the proliferation of T-cells and the differentiation of Th1 and Th17 cells.