Role of Oxidative Stress and Inflammation in Type 1 Gaucher Disease (GD1): Potential Use of Antioxidant/Anti-inflammatory Medications
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 33
- 试验地点
- 2
- 主要终点
- Change in subjects with Gaucher disease type 1, in concentration of glutathione in brain (μmol/g)
研究概览
简要总结
The purpose of this study is to measure levels of blood and brain chemicals related to oxidative stress and inflammation in healthy volunteers and individuals with Type 1 Gaucher disease (GD1) to see if these levels are altered by GD1.
详细描述
The investigators will also examine if there is a change in these blood and brain chemicals in GD1 patients after receiving oral N-acetylcysteine ("NAC"), which is available both as a prescription medication and as a dietary-supplement product, that has antioxidant and anti-inflammatory effects. Any changes the investigators may find in chemical levels may improve our understanding of the disease and could eventually lead to better treatment options. This is a multi-center study of approximately 50 people with Type 1 Gaucher disease (GD1) and healthy volunteers. Healthy volunteers will have 3 study visits over the course of 3 months. Procedures will include review of medical history, blood draws at each visit, and an MRI scan at the third visit. GD1 patients will have 7 study visits over the course of 9 months. Procedures include review of medical history, blood draws at each visit (multiple draws from an IV catheter at Visit 6), neurological exams, pain and fatigue questionnaires, and MRI scans (at Visits 3 and 6). In addition, GD1 patients will be given oral NAC at Visit 3, to begin taking twice a day for 90 days. All MRI scans will be done at the University of Minnesota in Minneapolis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •All participants must be 18 years or older.
- •All participants must understand and cooperate with requirements of the study in the opinion of the investigators and must be able to provide written informed consent.
- •Individuals with GD1 who are medically stable for participation in the study in the opinion of the investigator.
- •GD1 patients must be on a stable, specific ERT and/or SRT therapy at a specific dose (e.g. on a units/kg basis) for at least 2 years.
- •GD1 patients who have had a change in therapy, i.e. a change in dose or switch from one drug to another, can be enrolled after at least 6 months have elapsed since the change and is considered stable in the opinion of the clinician providing care to the patient.
- •Healthy subjects who will be frequency-matched for age.
- •All participants must not have taken antioxidants coenzyme Q-10, vitamin C, or vitamin E for 3 weeks prior to the study and during the course of the study.
排除标准
- •Medically unstable conditions in any group as determined by the investigators.
- •Concurrent disease; medical condition; or an extenuating circumstance that, in the opinion of the investigator, might compromise subject safety, study compliance, completion of the study, or the integrity of the data collected for the study.
- •Women who are pregnant or lactating or of child-bearing age who are not using acceptable forms of contraception.
- •History of asthma that is presently being treated.
- •Patients enrolled in another interventional study.
- •Allergy to N-acetylcysteine.
- •Patients who cannot or are unwilling to have blood drawn.
- •Inability to undergo MRI scanning, including but not limited to: unable to remain still in an MRI scanner for more than 30 minutes, claustrophobia, presence of paramagnetic substances or pacemakers in body, weight over 300 lbs.
- •Unable to adhere to study protocol for whatever reason.
研究组 & 干预措施
N-acetylcysteine
The first 10 GD1 subjects will take 1800mg NAC twice daily (3600mg/day) orally for approximately 90 days. An interim analysis will be performed to determine if this dose produces changes in systemic redox status and brain glutathione (GSH) levels. If no signal of a significant change is observed, the remaining 20 subjects will receive up to 3600 mg NAC orally twice a day (7200 mg/day).
干预措施: N-acetylcysteine (Drug)
结局指标
主要结局
Change in subjects with Gaucher disease type 1, in concentration of glutathione in brain (μmol/g)
时间窗: At 90 days and at 180 days
The investigators will measure the concentration of glutathione (GSH) in the brains of subjects with Gaucher disease type 1 at 90 days after enrollment, which is the baseline measure. It will again be measured at 180 days after enrollment. These measures will be obtained using NMR spectroscopy (often referred to by the acronym "MRS"). The MRS study will take place over approximately 1.0 hour and will generate measurements of GSH levels from 2-3 brain regions. Scanning may be done in multiple sessions if needed, but will not exceed 1.5 total scanning hours.
次要结局
- In healthy volunteers, determination of level of glutathione in brain (μmol/g)(90 Days After Enrollment)
- Change in subjects with Gaucher disease type 1, in concentration of glutathione in blood (μmol/g)(Baseline, 45 days, 90 days, 120 days, 150 days, 180 days, and 270 days)
- Change in healthy volunteers, in concentration of glutathione in blood (μmol/g)(Baseline, 45 days, and 90 days)
- Change in healthy volunteers, in concentration of TNF-alpha in plasma (pg/mL)(Baseline, 45 days, and 90 days)
- In healthy volunteers, determine the concentration of myo-inositol in brain (μmol/g)(90 Days After Enrollment)
- Change in subjects with Gaucher disease type 1, in concentration of myo-inositol in brain (μmol/g)(At 90 days and at 180 days)
- Change in subjects with Gaucher disease type 1, in concentration of TNF-alpha in plasma (pg/mL)(Baseline, 45 days, 90 days, 120 days, 150 days, 180 days, and 270 days)
- Change in subjects with Gaucher disease type 1, in concentration of N-acetylcysteine (NAC) in blood (µg/ml)(120 days, 150 days, and 180 days)