“…Triptolide has also been shown to display a therapeutic effect on solid tumor, leukemia, and a variety of inflammatory disorders, which is often accompanied by increased osteoclast formation (Chen, 2001;Wang et al, 2008;Yang et al, 2003;Yao et al, 2008). Some preclinical in vivo and in vitro studies report that triptolide delays onset of arthritis, lowers the arthritis scores and reduces the expression of osteoclast-activating factors (Hu et al, 2006;Matta et al, 2009;Xiao et al, 2009).…”