Fecal Microbiota Transplantation for Diabetes Mellitus Type II in Obese Patients
试验速览
- 阶段
- 2 期
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- 30% decrease in insulin resistance
研究概览
简要总结
The incidence of obesity has dramatically increased during the last three decades, leading to a significant increase of obesity-related morbidity, including type 2 diabetes mellitus (T2DM) that is characterized by resistance of target tissues to insulin action. T2DM obese patients may be treated by medications or by bariatric surgery. Both alternatives have limitations due to incomplete resolution of the diseases, high cost or potential procedural related morbidity. An increasing body of evidence points to a role of the enteric microbiota in the pathogenesis of obesity-related insulin resistance. In addition to that, the gut microbiota is directly affected by the diet composition. Studies in T2DM mice carrying human gut germs, demonstrated special interactions between the gut microbiota and the host, creating a typical microbiota composition which changes significantly following diet change from a western diet, rich with sugar, to a vegetarian diet rich with fibers. This rapid alternations in the microbiota composition has also shown in humans, after changing from western to high fiber diet. A change in diet life style may lead to an improvement in T2DM symptoms such as decrease in visceral adipose tissue.
详细描述
Study design:
30 Patients will undergo 2 FMT's from a lean donor and will be randomized into 3 types of diet groups:
- low fat high fiber diet (20% fat)
- no change in fat intake (sham diet)
- high fat low fiber diet (40-45% fat)
The treating physicians and the patients will be blinded for the diet arm. Before and after FMT, patients will be assessed after an overnight fast (and before taking medications) for weight, anthropometric measures, questionnaires (dietary, general health, antibiotic and probiotic exposure, oral diabetes medication quantity, and other drug exposure), blood and stool.
The investigators hypothesize that fecal microbial transplantation from a lean donor to T2DM obese patients, with the combination of low fat high fiber diet, will alter the gut microbiota composition to decrease insulin resistance through microbiota dependent metabolic and immunologic effects.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
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
- •A diagnosis of T2DM (≥3 months) and one of the following:
- •Fasting glucose level≥126mg/dL and/ or
- •A stable dose of anti-diabetic drugs for ≥2 weeks and/or
- •Access to a smart phone supporting the research application for tracking food consumption.
排除标准
- •participation in other clinical trial
- •incapable of signing an informed consent
- •pregnancy or breast feeding
- •Antibiotic treatment within the prior 3 months or predicted antibiotic treatment
- •insulin medications
- •drugs or alcohol addiction
- •immune mediated diseases
- •type 1 diabetes and latent autoimmune diabetes of adults
- •systemic disease
- •ischemic heart disease
- •probiotics consumption
- •a new or unstable treatment with anti diabetic medications
- •Patients will also be excluded if:
- •treated by systemic antibiotic during the study
- •will not be compliant with the diet
研究组 & 干预措施
FMT from a lean donor+ high fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start high fat low fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: gastroscopy (Procedure)
FMT from a lean donor+ high fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start high fat low fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: Fecal Microbiota Transplantation (Drug)
FMT from a lean donor+ high fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start high fat low fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: high fat low fiber diet (Other)
FMT from a lean donor+ sham diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start sham diet (no change in fat/fiber consumption) 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: gastroscopy (Procedure)
FMT from a lean donor+ sham diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start sham diet (no change in fat/fiber consumption) 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: Fecal Microbiota Transplantation (Drug)
FMT from a lean donor+ sham diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start sham diet (no change in fat/fiber consumption) 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: sham diet (Other)
FMT from lean donor+ low fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start low fat high fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: gastroscopy (Procedure)
FMT from lean donor+ low fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start low fat high fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: Fecal Microbiota Transplantation (Drug)
FMT from lean donor+ low fat diet
Patients will undergo FMT (Fecal Microboita Transplantation) from a lean donor twice during study through a gastroscopy:
- at time 0
- after 6 weeks Patient will start low fat high fiber diet 2 weeks before first FMT and continue on consuming the same diet 9 weeks after the first FMT. Patient will be followed up by a nutritionist through the the study.
干预措施: low fat high fiber diet (Other)
结局指标
主要结局
30% decrease in insulin resistance
时间窗: 6 weeks after first FMT
Lean donor FMT will result in 30% decrease in insulin resistance that will be further enhanced after a second FMT. These will be meditated by an alteration of intestinal microbiota
40% decrease in insulin resistance compared to baseline
时间窗: 12 weeks after second FMT
次要结局
- Improvement in anthropometric measures and in metabolic indices(week 6 and 12 post FMT)
- Maintenance of altered of enteric microbiota in the three diet groups(6, 12, 28 weeks post FMT)
- Maintenance of an improved insulin resistance(28 weeks post FMT)
- Decreased use of diabetes medications(Week 6 and 12 post FMT)