Research Article

PPAR-α Agonist Fenofibrate Upregulates Tetrahydrobiopterin Level through Increasing the Expression of Guanosine 5′-Triphosphate Cyclohydrolase-I in Human Umbilical Vein Endothelial Cells

Figure 3

Effect of fenofibrate and related compounds on intracellular level of BH4 in each group, measured by HPLC. Values are expressed as means ± SD. BH4: tetrahydrobiopterin. 𝑛 = 5 . * 𝑃 < 0 . 0 5 ; # 𝑃 < 0 . 0 5 versus LPS group.
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