Prostaglandin E2 induces interleukin-6 expression in human chondrocytes via cAMP/protein kinase A- and phosphatidylinositol 3-kinase-dependent NF-{kappa}B activation

P Wang, F Zhu and K. Konstantopoulos

The American Journal of Physiology - Cell Physiology 298 ( 6 ): 1445 - 1456 , 2010