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. 2020 Jul 7;25(9):674–685. doi: 10.1007/s10495-020-01620-6

Fig. 3.

Fig. 3

Effects of costunolide on glucose-6-phosphate dehydrogenase (G6PDH) activity, GSH and GSSG levels. Concentration-dependent inhibition of G6PDH activity (a), depletion of GSH (b), reduction of the GSH/GSSG ratio (c) after 24 h treatment of human erythrocytes with costunolide are shown. Number of independent experiments: n = 6. Differences of the means were considered to be statistically significant when the calculated p value was less than 0.05 (*p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001)