Sc. Tripathi et al., ARACHIDONIC-ACID METABOLISM AND CELL-PROLIFERATION IN RAT MAMMARY-CARCINOMA CELLS TREATED WITH INDOMETHACIN, Biochimica et biophysica acta. Molecular basis of disease, 1316(1), 1996, pp. 5-7
To determine the specificity of action of indomethacin as an inhibitor
of cyclooxygenase in the mammary epithelium, cell proliferation and l
evels of PGE(2) and LTB(4) were quantitated in 13762 MAT rat mammary c
arcinoma cells treated with 10(-4) to 10(-10) M concentrations of drug
. Suppression of proliferation of 13762 MAT cells by indomethacin was
associated with reduced levels of both PGE(2) and LTB(4). The antiprol
iferative activity of indomethacin in rat mammary carcinoma cells may
be modulated through inhibition of both cyclooxygenase and lipoxygenas
e pathways of arachidonic acid metabolism.