Rheohemapheresis and Lutein Supplementation (Xantophyll Carotenoid) in the Non-Exsudative Form of Age-Related Macular Degeneration
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 20
- 试验地点
- 1
研究概览
简要总结
Age-related macular degeneration is one of the major causes of blindness in the western world. There is an exsudative and a non-exsudative form of age-related macular degeneration.Most studies concentrate on the exsudative form. In the non-exsudative form the policy is generally watch and see, but patients are at risk to develop an exsudative form. So far, the only accepted therapy to reach stable disease in the non-exsudative form is high-dose supplementation of antioxidants. Another approach to improve visual acuity in patients with non-exsudative form of macular degeneration is rheohemapheresis treatment, an extracorporeal therapy where plasma is separated from blood cells. By the use of a hollow fiber filter plasma is depleted of high molecular weight proteins and reinfused. Others report describe the supplementation of lutein (a vitamin A derivative) as possible treatment option. However, none of the studies have yet examined a combination of rheohemapheresis and lutein supplementation.
详细描述
Rheohemapheresis will be performed in 5 cycles. One cycle consists of 2 rheohemapheresis treatments on day 1 and day 4. A cycle lasts for 4 weeks and will be repeated every fourth week. During each treatment > 75% to 100% of patients total plasma volume has to be filtered.General medical reviews, ETDRS and Radner visual acuity assessment, ophthalmologic examinations, ocular imaging with OCT 3, autofluorescein imaging and infrared imaging, multifocal ERG, ocular echography, and blood examinations will be performed.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 50 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Study eye with non-exsudative AMD AREDS II - III
- •with > 10 large soft, and / or confluent drusen within 3000 nm of the foveal centre
- •and a best corrected visual acuity of 0.06 - 1.0 using ETDRS charts (letter score of 3 to 50 letters)
- •with / without geographic atrophy less than 3 disc diameters within 3000 nm of the foveal centre ´. with / without serous pigment epithelial detachment without clearly identifiable neovascularisation
- •Patients must have elevated baseline concentrations of at least one of the rheologic parameters (serum cholesterol level > 200 mg/dL, fibrinogen level > 390 mg/dL, or plasmaviscosity > 1.6 mPa*s)
- •Men or women aged between 50 - 99 years.
排除标准
- •Study eye with exsudative AMD
- •Study eye with concomitant retinal or choroidal disorder other than AMD
- •Study eye with significant central lens opacities and / or conditions that limit the view of the fundus
- •poor general condition
- •hematocrit < 30%
- •coagulation disorders (incl. marcoumar therapy)
- •significant cardiac problems ( > NYHA II)
- •history (< 12 months) of cardiac infarction
- •uncontrolled arterial hypertension
- •recent history (< 3 months) of cerebral vascular infarction
- •cerebrovascular disease IV
- •uncontrolled diabetes
- •insufficient antecubital venous access
- •lutein supplementation within the last 3 months
- •weight < 45 kg
- •hemato-oncological disorder
- •Patients who are unwilling to adhere to visit examination schedules