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. 2020 Nov 26;11:593416. doi: 10.3389/fphar.2020.593416

FIGURE 2.

FIGURE 2

Inhibitory activities of omeprazole and its analogues on TPH1 and TPH2. In vitro enzyme activity assays were used to evaluate the effect of proton pump inhibitors to inhibit tryptophan hydroxylase 1 (TPH1); tryptophan hydroxylase 2 (TPH2). Data represent means ± SEM of three separate experiments performed in duplicate.