Effect of IPA/NO-aspirin, DEA/NO-aspirin, IPA/NO, DEA/NO and aspirin (100 μM) on GAPDH activity in A549 cells at 1 h (experiment in triplicate) at 37°C. The data are expressed as mean ± SD (experiment in triplicate), and one-way ANOVA was applied to determine the significance of the difference between control and treatment groups (*, p < 0.01).