生物活性 | |||
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描述 | Sapropterin dihydrochloride is a synthetic version of tetrahydrobiopterin, the naturally occurring pterin cofactor that is required for PAH-mediated phenylalanine hydroxylation[3]. It acts as a pharmacological chaperone, reducing blood Phe concentration and increasing dietary Phe tolerance in BH4-responsive patients with PAH (phenylalanine hydroxylase) deficiency[4]. In patients with PKU (phenylketonuria) who are responders, treatment with BH4 can activate residual PAH (Phenylalanine hydroxylase) enzyme, improve the oxidative metabolism of Phe, and decrease Phe blood levels in some patients. Kuvan (sapropterin dihydrochloride) is available as 100 mg oral tablets and the recommended starting dose is 10 mg/kg/day daily[5]. Sapropterin dihydrochloride (BH4) reduces phenylalanine (Phe) levels and improves white matter integrity in a subset of individuals with phenylketonuria (PKU) known as "responders."[6]. When started after disease onset, oral sapropterin treatment inhibits chronic hypoxia-induced pulmonary hypertension at least in part by recoupling eNOS in the pulmonary vasculature of newborn piglets[7]. |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT02677870 | Phenylketonuria | Phase 4 | Recruiting | August 2018 | United States, Ohio ... 展开 >> University Hospitals Cleveland Medical Center Recruiting Cleveland, Ohio, United States, 44106 Contact: Lori P Schillaci, MD 216-844-3936 lori-anne.schillaci@uhhospitals.org 收起 << |
NCT00625820 | Kidney Disease ... 展开 >> Albuminuria 收起 << | Phase 2 | Completed | - | United States, Michigan ... 展开 >> University of Michigan Ann Arbor, Michigan, United States, 48109 收起 << |
NCT00625820 | - | Completed | - | - |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.18mL 0.64mL 0.32mL |
15.92mL 3.18mL 1.59mL |
31.83mL 6.37mL 3.18mL |
参考文献 |
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