Effect of Hemin on Heme-Oxygenase-1 Activity in Healthy Subjects
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 发起方
- Mayo Clinic
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- Venous carboxyhemoglobin concentrations
研究概览
简要总结
This study is being done because we want to learn if hemin can increase the production of heme oxygenase 1. Heme oxygenase 1 (HO-1) is an enzyme which protects cells from physical, chemical, and biologic stress. Hemin is produced from red blood cells and is approved by the Food and Drug Administration for treating acute porphyria, which is an inherited condition caused by an enzyme deficiency.
详细描述
Heme-oxygenase 1 (HO-1) degrades heme, protects cells against oxidative stress, and is beneficial in several experimental models but has not been pharmacologically activated in humans. The objectives of this study were to evaluate the effects of hemin on HO-1 activity in healthy subjects. Hemin is the most powerful inducer of HO-1. Hemin is FDA-approved to treat acute intermittent porphyria. In addition, hemin has also been used to treat thalassemia intermedia, myelodysplastic syndrome, and to control liver allograft failure due to recurrence of erythropoietic prototheria. Our hypothesis is that compared to placebo, hemin will increase HO-1 in humans. Ten healthy subjects will be randomized to hemin (n = 5, Panhematin®, Ovation Pharmaceuticals, 3 mg/kg i.v. in 25% albumin) or placebo (n = 5, 25% albumin) infusion. HO-1 activity will be assessed before and after (4, 6, 24, and 48 hours) infusions.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
Hemin
干预措施: Hemin infusion (Drug)
placebo
干预措施: placebo infusion (Drug)
结局指标
主要结局
Venous carboxyhemoglobin concentrations
时间窗: at 6 hours
HO-1 protein concentration in leukocytes from venous blood
时间窗: at 6 hours
Serum bilirubin
时间窗: at 6 hours
次要结局
- Venous carboxyhemoglobin concentrations(at 4, 24, and 48 hours)
- HO-1 activity in leukocytes from venous blood(at 4, 24, and 48 hours)
- Serum bilirubin(at 4, 24, and 48 hours)