gelatinase A human 7 Humans 6 Article 5 controlled study 5 metabolism 5 male 4 messenger RNA 4 pathology 4 protein expression 4 Cell Line, Tumor 3 Matrix Metalloproteinase 2 3 adult 3 cell migration 3 cell viability 3 female 3 genetics 3 human cell 3 interleukin 6 3 nonhuman 3 tumor cell line 3 Animals 2 Cell Movement 2 MMP2 2 MMP2 protein, human 2 Male 2 Osteosarcoma 2 Signal Transduction 2 animal 2 animal experiment 2