Phosphorylation of extracellular signal-regulated kinase 1/2, p38 mitogen-activated protein kinase and nuclear translocation of nuclear factor-κB are involved in upregulation of matrix metalloproteinase-9 by tumour necrosis factor-α. - Itatsu, ,4Keita; Sasaki, Motoko; Harada, Kenichi; Yamaguchi, Junpei; Ikeda, Hiroko; Sato, Yasunori; Ohta, Tetsuo; Sato, Hiroshi; Nagino, Masato; Nimura, Yuji; Nakanuma, Yasuni (Liver International, 2009)