Regulation of Branched-chain Amino Acid Metabolism in Pre-Diabetes
NCT01786941
ABOUT THIS STUDY
FOR MORE INFORMATION
Contact a representative by phone, email, or visiting the study website. Please see the references below:
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1-800-718-1021
- 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
- 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)
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Descriptive Information | ||||
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Brief Title ICMJE | Regulation of Branched-chain Amino Acid Metabolism in Pre-Diabetes | |||
Official Title ICMJE | Regulation of Branched-chain Amino Acid Metabolism in Pre-Diabetes: Responses to Exercise Training and Gastric Bypass Surgery | |||
Brief Summary | 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. | |||
Detailed Description | Not Provided | |||
Study Type ICMJE | Interventional | |||
Study Phase ICMJE | Not Applicable | |||
Study Design ICMJE | Allocation: Non-Randomized Intervention Model: Parallel Assignment Masking: None (Open Label) Primary Purpose: Health Services Research | |||
Condition ICMJE |
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Intervention ICMJE |
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Study Arms ICMJE |
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Publications * | Glynn EL, Piner LW, Huffman KM, Slentz CA, Elliot-Penry L, AbouAssi H, White PJ, Bain JR, Muehlbauer MJ, Ilkayeva OR, Stevens RD, Porter Starr KN, Bales CW, Volpi E, Brosnan MJ, Trimmer JK, Rolph TP, Newgard CB, Kraus WE. Impact of combined resistance and aerobic exercise training on branched-chain amino acid turnover, glycine metabolism and insulin sensitivity in overweight humans. Diabetologia. 2015 Oct;58(10):2324-35. doi: 10.1007/s00125-015-3705-6. Epub 2015 Aug 9. | |||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. | ||||
Recruitment Information | ||||
Recruitment Status ICMJE | Completed | |||
Actual Enrollment ICMJE | 132 | |||
Original Estimated Enrollment ICMJE | 60 | |||
Actual Study Completion Date ICMJE | December 2013 | |||
Actual Primary Completion Date | December 2013 (Final data collection date for primary outcome measure) | |||
Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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Sex/Gender ICMJE |
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Ages ICMJE | 30 Years to 65 Years (Adult, Older Adult) | |||
Accepts Healthy Volunteers ICMJE | Yes | |||
Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | |||
Listed Location Countries ICMJE | United States | |||
Removed Location Countries | ||||
Administrative Information | ||||
NCT Number ICMJE | NCT01786941 | |||
Other Study ID Numbers ICMJE | Pro00034434 | |||
Has Data Monitoring Committee | Not Provided | |||
U.S. FDA-regulated Product | Not Provided | |||
IPD Sharing Statement ICMJE | Not Provided | |||
Responsible Party | Duke University | |||
Study Sponsor ICMJE | Duke University | |||
Collaborators ICMJE | Pfizer | |||
Investigators ICMJE |
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PRS Account | Duke University | |||
Verification Date | October 2015 | |||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |