The potential cytotoxicity of compounds under hypoxic conditions is determined by exposing cell cultures to test compounds in a low oxygen atmosphere. Subsequent cell survival is determined by the MTT and methylene blue colorimetric assays. - [Read Colorimetric Cytotoxcity Assays for Anchorage Dependent Cells Protocol]
The cyclooxygenase (COX) reaction can be monitored by measurement of oxygen consumption, peroxidase co-substrate oxidation or prostaglandin (PG) detection. This protocol describes a procedure measuring cyclooxygenase activity by quantifying PGE2 produced by enzymatic conversion of arachidonic acid, in the presence or absence of potential inhibitors. - [Read ELISA Method to Measure Inhibition of the COX Enzymes Protocol]