Regulation of Branched-chain Amino Acid Metabolism in Pre-Diabetes (BCAAM-PD)
2015年10月15日 更新者：Duke University
Regulation of Branched-chain Amino Acid Metabolism in Pre-Diabetes: Responses to Exercise Training and Gastric Bypass Surgery
Elevated circulating levels of certain amino acids (the building blocks of protein) are strongly associated with insulin resistance.
This study will investigate the metabolism of these amino acids in individuals with normal glucose metabolism compared to overweight or obese pre-diabetic individuals.
The purpose of this study is to determine how elevated levels of the branched-chain amino acids may contribute to the development of insulin resistance and ultimately diabetes.
An additional purpose is to determine whether exercise or gastric bypass (GBP) surgery intervention can correct aberrations in branched-chain amino acid metabolism as insulin sensitivity improves.
This information will be used to further our understanding of the development of insulin resistance and type 2 diabetes in at-risk populations and potentially improve clinical treatment of such conditions.
研究概览
地位
完全的
研究类型
介入性
注册 (实际的)
132
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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North Carolina
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Durham、North Carolina、美国、27710
- Duke University Medical Center
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
30年 至 65年 (成人、年长者)
接受健康志愿者
是的
有资格学习的性别
全部
描述
Inclusion Criteria:
Age:
- Lean and Overweight Pre-diabetic (PD) groups: 40-65 years
- Obese Gastric Bypass (GBP) patients: 30-65 years
Body Mass Index (BMI) within desired range for group:
- Lean group: 18.0 - 24.9
- Overweight PD group: 25.0 - 35.4
- GBP group: 35.0 - 50.0
Fasting Plasma Glucose level within desired range for group:
- Lean: < 99 mg/dL
- PD: > 105 - < 126 mg/dL
- GBP: > 99
Oral Glucose Tolerance Test, 2-hour Plasma Glucose results within desired range:
- Lean: < 139 mg/dL
- PD: 140-199 mg/dL
- Low density (LDL) cholesterol: < 190 mg/dL
- Triglycerides: < 600 mg/dL
- Resting blood pressure: <160/90 mmHg
- Inactive: Exercise < two days/week (GBP and PD only);
- Peak oxygen use: > 14.0 - < 40.0 ml/kg/min (PD only)
- Medications: Stable use of all medications for > three months
- Body Weight < 495 lbs
Exclusion Criteria:
- Smoker: Tobacco use within the last 12 months
- Dieting or intending to diet (excluding intention for gastric bypass procedure in GBP group)- Not weight stable for > six months or weight loss exceeding five pounds in last six months
- Use of potential confounding medications, e.g. Niacin containing drugs
- History of diabetes, heart disease or taking medication for those conditions
- History of hypertension (high blood pressure) not controlled with medication
- Pregnant or intending to become pregnant
- Unwillingness to participate in study visits, submit to skeletal muscle biopsies and all other study testing or continuously participate in the exercise training intervention program for six months if in overweight PD group
- Orthopedic limitations, musculoskeletal disease and/or injury
- Allergic to xylocaine
- Inability to give blood continuously through an intravenous catheter
- Unwillingness to exercise at least three times per week at the Duke Center for Living during staff supervised times (PD only)
- Exercise compliance less than 85% in any 6 week period (missing > 3 exercise sessions in a 6 week period)
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：卫生服务研究
- 分配：非随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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无干预：Lean Group
Healthy Controls - no intervention
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其他：Pre-Diabetes Group
Pre-Diabetes Group will undergo a 6-mo Aerobic and Resistance combined exercise training intervention
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其他：Gastric Bypass Group
Non-diabetic patients intending to undergo Gastric Bypass surgery
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Changes in Branched-chain Amino Acid Metabolism in Pre-Diabetes at Baseline and post-intervention
大体时间：Baseline and pre- and post-intervention: 1) Lean Group-Baseline measures only; 2)Pre-Diabetic group - Baseline and 6-months post exercise intervention; 3) GBP group - Baseline and 3-months post Gastric Bypass Surgery
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Baseline and pre- and post-intervention: 1) Lean Group-Baseline measures only; 2)Pre-Diabetic group - Baseline and 6-months post exercise intervention; 3) GBP group - Baseline and 3-months post Gastric Bypass Surgery
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Changes in Insulin Sensitivity at Baseline and post-intervention
大体时间：Baseline and pre- and post-intervention: 1) Lean Group-Baseline measures only; 2)Pre-Diabetic group - Baseline and 6-months post exercise intervention; 3) GBP group - Baseline and 3-months post Gastric Bypass Surgery
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Baseline and pre- and post-intervention: 1) Lean Group-Baseline measures only; 2)Pre-Diabetic group - Baseline and 6-months post exercise intervention; 3) GBP group - Baseline and 3-months post Gastric Bypass Surgery
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2012年6月1日
初级完成 (实际的)
2013年12月1日
研究完成 (实际的)
2013年12月1日
研究注册日期
首次提交
2013年2月6日
首先提交符合 QC 标准的
2013年2月6日
首次发布 (估计)
2013年2月8日
研究记录更新
最后更新发布 (估计)
2015年10月19日
上次提交的符合 QC 标准的更新
2015年10月15日
最后验证
2015年10月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.