Figure 2.
Leptin effect on RA key effector cells. Leptin enhances Th17 proliferation, B cell activation, and macrophage production of TNF and Il-6. It activates FLS migration and secretion of IL-8. It acts on chondrocytes by activating NOS expression and adhesion molecules leading to lymphocyte infiltration to the inflamed joints and degradation of articular cartilage.