SNAI1 and thyroid gland papillary carcinoma: In our previous work [19], we demonstrated that ouabain decreased cell migration and the expression of epithelial to mesenchymal transition (EMT) markers associated with tumor cell aggressiveness, such as vimentin, SNAIL-1 and MMP-9, in the human thyroid papillary cancer TPC-1 and BCPAP cell lines.