Pathogenesis of Non-alcoholic Steatohepatitis and Liver Regeneration After Bariatric Surgery / Untersuchung Der Pathogenese Der Nicht-alkoholischen Steatohepatitis Und Der Leberregeneration Nach Bariatrischer Chirurgie
试验速览
- 阶段
- 不适用
- 入组人数
- 200
- 试验地点
- 1
- 主要终点
- Weight in kg
研究概览
简要总结
Obesity and obesity related health problems are globally recognized as one of the major threats to public health. Bariatric surgery is the most effective and durable therapy option for obesity and the improvement of obesity related co-morbidities. "Non alcoholic steatohepatitis" (NASH) is an important comorbidity of obesity and improves after surgical intervention. In this study investigators try to enlighten the weight independent mechanism for the effects of bariatric surgery. Patients who are assigned to a bariatric procedure will be observed for at least 24 month. A liver and adipose tissue samples are gained during the operation. Liver function and morphology are observed before and after operation with LiMAx, FibroScan and ultrasound. Systemic inflammation is measured in blood samples before and after surgical intervention. In order to check the microbiome stool samples are collected throughout the entire observation period.
详细描述
Every patient who is scheduled for bariatric surgery in the university hospital Aachen will be evaluated for this study. After informed consent baseline measurements are performed preoperative. Baseline measurements involve blood and stool samples, LiMAx, FibroScan and ultrasound. During the operation a liver, a subcutaneous and visceral fat sample are taken to analyse liver histology and inflammation as well as fatty tissue signaling. After the operation patients are observed 24 month. Further blood samples are taken on the first postoperative day, 2 and 4 weeks, 3, 6, 12, 18 and 24 month after the operation. Stool samples are taken 2 and 4 weeks, 3, 6, 12, 18 and 24 month after the intervention. The LiMAx test, a test analysing the liver function, is performed 4 weeks, 6, 12 and 24 month after the operation. The morphologic liver structure is evaluated by FibroScan and ultrasound 4 weeks, 6, 12 and 24 month postoperative.
研究设计
- 研究类型
- Observational
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •>18 years
- •scheduled for bariatric surgery
- •informed consent
排除标准
- •pregnancy
- •substance abuse
- •liver disease other than NASH
结局指标
主要结局
Weight in kg
时间窗: 24 month
次要结局
- NAFLD (Non-alcoholic fatty liver disease) Activity Score (NAS)(within 7 days after the operation)