Effect of Nicotinamide Riboside on Ketosis, Fat Oxidation &Amp;Amp;Amp;Amp; Metabolic Rate
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 100
- 试验地点
- 1
- 主要终点
- Mean change in sleeping energy expenditure between the ketogenic diet and the baseline run-in diet
研究概览
简要总结
Background:
At least 30% of Americans have fatty liver disease. This means that they store too much fat in the liver. At the moment lifestyle changes are the only way to treat this problem.
Objective:
To test how (1) a low-carbohydrate diet and (2) a supplement called nicotinamide riboside (NR) affect how a person s body uses dietary fat.
Eligibility:
Men aged 18 to 65 and women aged 18 to 50 who are healthy volunteers with a body mass index (height to weight ratio) of 25 or more. Adults with maturity-onset diabetes of the young type 2 (MODY2) are also needed.
Design:
Participants with diabetes will have 1 screening visit and a 9-day clinic stay. Healthy volunteers will have 1 screening visit and 2 clinic stays of 1 to 2 weeks each.
During screening, all participants will have a physical exam with blood and urine tests. They will have their heart rhythm measured while riding a gym bike.
NR is a pill taken by mouth. Only healthy volunteers will take the NR, for 14 days at a time, during 1 clinic stay. During their other stay, they will take placebos; these are pills that look like the study supplement but contain no NR.
During each clinic stay, all participants will eat a normal American diet. Then they will eat a ketogenic "low-carb" diet for 5 days.
Participants will have many tests, including:
Sleeping every night and having two 24-hour stays in a special room that measures the gases their body uses and produces.
Drinking a high-fat shake, then remaining seated for 5 hours while their blood and breath are monitored.
Having a substance injected into the arm and remaining seated for 3 hours while their blood is measured.
Wearing monitors to measure their activity levels. Another monitor will measure their blood glucose levels.
Having imaging scans.
...
详细描述
Study Description:
This is a randomized, double-blind, placebo-controlled crossover study of adults with overweight or obesity to determine whether nicotinamide riboside supplementation increases sleeping energy expenditure and fat oxidation rate during a ketogenic diet.
Objectives:
Primary Aim 1: Determine whether sleeping energy expenditure increases after transitioning to a low carbohydrate ketogenic diet as compared to a baseline high carbohydrate run-in diet in men
Primary Aim 2: Determine whether sleeping energy expenditure is affected by NR supplementation during a ketogenic diet in men
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 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
- 否
入选标准
- •INCLUSION CRITERIA:
- •In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- •Meet one of the following:
- •Adult males aged 18-65 years
- •Pre-menopausal adult females aged 18-50 years
- •Adult males aged 18-65 years with diagnosed maturity-onset diabetes of the young type 2 (MODY2) or pre-menopausal adult females aged 18-50 years with diagnosed MODY2
- •Weight stable (< +/- 5 % body weight change over past 6 months) as determined by volunteer report
- •Body mass index (BMI) >= 25 kg/m^2 (of >=18.5 kg/m^2 for patients with MODY2)
- •Able to cycle at a moderate rate and intensity with a HR equal to or greater than 0.3x(220-age-HRrest)+HRrest but not exceeding 0.4x(220-age-HRrest)+HRrest with no signs of arrhythmia
排除标准
- •An individual who meets any of the following criteria will be excluded from participation in this study:
- •Taking prescription medications or other drugs or supplements that may influence energy metabolism or nutrient digestion or absorption (including, but not limited to, diet/weight-loss medication or other medications at the discretion of the PI and/or study team)
- •Indicators of liver disease; combination of both albumin < 2.8 mg/mL and bilirubin > 3 mg/mL
- •Individuals with significant medical comorbidities (e.g., non-MODY2 diabetes, NYHA Class >II heart failure, or CKD Stage II or worse, or American Society of Anesthesiologists Physical Status Class 3 or above)
- •Individuals taking prescription medications to treat hypertension in participants without MODY2
- •Participating in a regular exercise program (> 2h/week of vigorous activity) as determined by volunteer report
- •Positive pregnancy test (only for people who can get pregnant)
- •Hematocrit < 40% (men only)
- •Hematocrit <37% (women only)
- •Caffeine consumption > 300 mg/day as determined by volunteer report
- •Alcohol consumption > 3 drinks per day for men or > 2 drinks per day for women as determined by volunteer report
- •Regular use of tobacco (smoking or chewing), e-cigarettes (a.k.a. vapes), nicotine patches, or illicit drugs over past 6 months as determined by volunteer report. Subjects may also be excluded based on a urine drug test.
- •Psychological conditions as determined by volunteer report such as (but not limited to) eating disorders, depression, bipolar disorders, that would be incompatible with safe and successful participation in this study, as determined by investigators
- •Volunteers with strict dietary concerns (e.g. vegetarian or kosher diet, food allergies) or a reported dislike of a significant fraction of the study foods
- •Unwilling or unable to comply with or perform all study procedures (e.g. cycling or activities of daily living), or unavailability for the duration of the study, as determined by participant or investigator discretion
- •Unwilling or unable to adhere to Lifestyle Considerations throughout study duration, as determined by participant or investigator discretion
- •Volunteers unwilling or unable to give informed consent
- •Participants with a measured Resting Energy Expenditure (REE) more than 30% above or below the predicted REE based on Mifflin St Jeor equation
研究组 & 干预措施
Men with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Placebo (Dietary Supplement)
MODY2 Patients
To measure changes in sleeping energy expenditure and fat oxidation rate after transitioning from a baseline diet to an isocaloric ketogenic diet similar to our previous study in men
干预措施: Standard Diet (Other)
Women with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Standard Diet (Other)
Women with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Placebo (Dietary Supplement)
Men with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Nicotinamide Riboside (Dietary Supplement)
Women with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Nicotinamide Riboside (Dietary Supplement)
Men with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Ketogenic Diet (Other)
Men with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Standard Diet (Other)
MODY2 Patients
To measure changes in sleeping energy expenditure and fat oxidation rate after transitioning from a baseline diet to an isocaloric ketogenic diet similar to our previous study in men
干预措施: Ketogenic Diet (Other)
MODY2 Patients
To measure changes in sleeping energy expenditure and fat oxidation rate after transitioning from a baseline diet to an isocaloric ketogenic diet similar to our previous study in men
干预措施: Placebo (Dietary Supplement)
Women with overweight or obesity
To investigate whether NR supplementation augments the sleeping energy expenditure and fat oxidation rate during the ketogenic diet in men and women with overweight and obesity
干预措施: Ketogenic Diet (Other)
结局指标
主要结局
Mean change in sleeping energy expenditure between the ketogenic diet and the baseline run-in diet
时间窗: 7 days
Mean change in sleeping energy expenditure measured by room calorimetry from 2 days of standard run-in diet to 5 days of ketogenic diet
Mean difference in sleeping energy expenditure between NR and placebo during the ketogenic diet
时间窗: 5 days
Mean difference in sleeping energy expenditure measured by room calorimetry during 5 days of ketogenic diet with NR supplementation or placebo
次要结局
- Mean difference in fat oxidation rate between NR and placebo during the ketogenic diet(5 days)
- Mean change in sleeping fat oxidation rate between the ketogenic diet and the baseline run-in diet(7 days)