
Guinea pig ascorbate status predicts tetrahydrobiopterin plasma concentration and oxidation ratio in vivo
Keywords: BH2, dihydrobiopterin; BH4, tetrahydrobiopterin; DHA, dehydroascorbic acid; DTE, dithioerythritol; ED, endothelial dysfunction; eNOS, endothelial nitric oxide synthase; HPLC, high performance liquid chromatography; MPA, meta-phosphoric acid; NOS, nitric o