The enhanced lucigenin-derived chemiluminescence method was adopted to measure the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity and ROS level in aortic tissues or A7r5 cells. Both dark-adapted 100 μM NADPH and 5 μM lucigenin were used to trigger the photon emission and the background chemiluminescence was detected by a luminometer (Turner, CA, USA). The data were presented as the mean of light unit (MLU)/min/mg protein.
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