Intervention With Products Enriched With Long Chain n-3 Polyunsaturated Fatty Acids (n-3 LC-PUFA) From Microalgae Oil in Patients With Rheumatoid Arthritis - Influence on Disease Activity and Inflammation Status
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 38
- 试验地点
- 4
- 主要终点
- Sum of tender and swollen joints (68/66), disease activity score DAS 28, ultrasound score US-7
研究概览
简要总结
The study was performed to investigate the effects of a daily consumption of n-3 LC-PUFA supplemented products (sausage, tomato spread, milk beverage) on disease activity, inflammatory markers, and cardiovascular risk factors in patients with rheumatoid arthritis.
详细描述
Recent studies suggest that the daily intake of n-3 LC-PUFA (eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)) can support the therapy of chronic-inflammatory diseases and might be useful to prevent coronary heart diseases. The majority of these studies do not differentiate between the effects of EPA and DHA. The present study investigate the therapeutic potential of DHA in patients with rheumatoid arthritis.
As a precondition for participating in this study, the patients were provided information in writing and verbally form about the details of the study. Written informed consent was obtained from all volunteers. Before the beginning of the study, all patients were subject to a medical examination by their general rheumatologist. Thirty-eight patients with rheumatoid arthritis (DAS ≥ 2.4) entered the study.
The placebo-controlled, randomized double-blind cross-over study consists of two investigation periods of 10 weeks, with a ten-week washout period in between (after the washout period the intervention was crossed between the groups and the respective products were consumed for further 10 weeks).
Patients in the placebo period receive 60 g sausage, 8 g tomato spread and 30 g milk powder (= 200 mL milk beverage) daily. These products were enriched with sunflower oil (8 g/d).
In the intervention period, the products (60 g sausage, 8 g tomato spread and 30 g milk powder (= 200 mL milk beverage) were enriched with 8 g microalgae oil (Schizochytrium sp., Maris DHA oil, no. 3790, IOI, Hamburg, Germany). In this group, the daily dose of docosahexaenoic acid (DHA) amounted to 2.11 g.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 40 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient has a diagnosis of RA (according to the ACR classification criteria, revised 2010) for at least 6 months prior to randomization.
- •Patient has a moderate disease activity as defined by disease activity score DAS28 ≥ 2.4
- •Patient has the ability to comprehend the full nature and purpose of the study, including possible risks and side effects, to cooperate with the investigator, to understand verbal and written instructions, and to comply with the requirements of the entire study.
- •stable dosis of disease-modifying antirheumatic drugs within 4 weeks prior to randomization and presumably over the study periods (30 weeks).
排除标准
- •Intra-articular corticosteroids within 4 weeks prior to randomization or blood sample taking
- •Patients are permitted to receive either oral or parenteral glucocorticoids equivalent to ≤10 mg daily prednisone and nonsteroidal anti-inflammatory drug, if they have received a stable dose for at least 4 weeks prior to randomization and presumably over the study periods (30 weeks).
结局指标
主要结局
Sum of tender and swollen joints (68/66), disease activity score DAS 28, ultrasound score US-7
时间窗: 10 weeks
Disease activity parameters
次要结局
- Inflammation markers such as erythrocyte sedimation rate (ESR), C reactive protein (CRP), adhesion molecules, cytokines, rheumascan(10 weeks)
- Concentrations of arachidonic acid, eicosapentaenoic acid, docosahexaenoic acid in plasma lipids and erythrocyte lipids(10 weeks)
- Lipid mediators formed by lipoxygenases, cyclogenases(10 weeks)
研究者
Gerhard Jahreis
Professor
University of Jena