Ren Xinyu, Ruan Qiurong, Zhu Dahe, Zhu Min, Qu Zhiling, Lu Jun. Tetramethylpyrazine inhibits agiontensin H--induced nudear factor--#kappa#B activation and bone morphogenetic protein--2 downregulation in rat vascular smooth muscle cells. Acta Physiol Sin 2007; 59 (3): 339-344 (in Chinese with English abstract).