text: Reverse transcription polymerase chain reaction (RT-PCR) and western blot analyses revealed that CK inhibited << DMN >>-induced increases in matrix metalloproteinase-13 (MMP-13), tissue inhibitor of metalloproteinase-1 (TIMP-1), and tumor necrosis factor-α (TNF-α) mRNA, and collagen type I and [[ α-smooth muscle actin ]] protein.