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Effects of Antidiabetic Medications on the Postprandial State in Prediabetes

Primary Purpose

Prediabetes, Obesity

Status
Completed
Phase
Phase 4
Locations
United States
Study Type
Interventional
Intervention
Exenatide
Saxagliptin
Exenatide extended-release (ER)
Placebo
Sponsored by
The University of Texas Health Science Center, Houston
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Prediabetes focused on measuring prediabetes, diabetes mellitus type 2, exenatide, saxagliptin, exenatide ER

Eligibility Criteria

30 Years - 70 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Diagnosis of Prediabetes - defined as either impaired fasting glucose (fasting glucose of 100-125 mg/dL), impaired glucose tolerance (2-hour postprandial blood glucose of 140-199 mg/dL after 75 gram oral glucose challenge), and/or a hemoglobin A1C ranging from 5.7% to 6.4%
  • Subjects are allowed, but not required, to be on statins, ACE-inhibitors, beta-blockers, angiotensin-receptor blockers, thiazide diuretics, and/or loop diuretics at doses that have been stable for at least the last 3 months
  • BMI between 30-35 kg/m2 (±1 kg/m2)
  • Body weight has been stable (±4-5 pounds) over the prior three months.
  • Women of childbearing age must agree to use an acceptable method of pregnancy prevention (barrier methods, abstinence, or surgical sterilization) for the duration of the study
  • Patients must have the following laboratory values: Hematocrit ≥ 34 vol% S. creatinine < 1.5 mg/dl in men and 1.4 mg/dl in women AST (SGOT) < 2.5 times ULN, ALT (SGPT) < 2.5 times ULN, alkaline phosphatase< 2.5 times ULN

Exclusion Criteria:

  • History of Type 1 or Type 2 diabetes mellitus
  • History of diabetic ketoacidosis or hyperosmolar nonketotic coma
  • Pregnant or breastfeeding women
  • Patients must not be receiving lipid-lowering medications other than statins within the last 3 months
  • Patient must not be receiving metformin, DPP-IV inhibitors, GLP-1 agonists, thiazolidinediones, insulin, sulfonylureas, acarbose, SGLT-2 inhibitors, corticosteroids, or immunosuppressive therapy within the last 3 months and cannot take them for the duration of the study. Patient must not be receiving NSAIDS or antioxidant vitamins within the last 1 week, and cannot take them for the duration of the study.
  • Patients must not be on hormone replacement therapy.
  • Patients with diabetic gastroparesis
  • Patients with current tobacco use
  • Patients with active malignancy
  • Patients with history of urinary bladder cancer
  • Patients with dietary restrictions precluding a high-fat meal
  • Patients with a history of clinically significant heart disease (NYHA III or IV; more than non- specific ST-T wave changes on the EKG), peripheral vascular disease (history of claudication), or pulmonary disease (dyspnea on exertion of one flight or less; abnormal breath sounds on auscultation) will not be studied
  • Subjects with a history of any serious hypersensitivity reaction to the study medications
  • Prisoners or subjects who are involuntarily incarcerated
  • Subjects who are compulsorily detained for treatment of either a psychiatric or physical (e.g., infectious disease) illness
  • Subjects with known allergic reactions to the study medications or test meal
  • Subjects unwilling or unable to provide informed consent
  • Subjects determined by the investigator(s) to not be appropriate candidates for the study

Sites / Locations

  • The University of Texas Health Science Center at Houston

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm 5

Arm 6

Arm 7

Arm 8

Arm 9

Arm 10

Arm 11

Arm 12

Arm Type

Experimental

Experimental

Placebo Comparator

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Experimental

Arm Label

Exenatide, then Saxagliptin, then Placebo

Exenatide, then Placebo, then Saxagliptin

Saxagliptin, then Exenatide, then Placebo

Saxagliptin, then Placebo, then Exenatide

Placebo, then Exenatide, then Saxagliptin

Placebo, then Saxagliptin, then Exenatide

Exenatide, then Saxagliptin, then Placebo, then Exenatide ER

Exenatide, then Placebo, then Saxagliptin, then Exenatide ER

Saxagliptin, then Exenatide, then Placebo, then Exenatide ER

Saxagliptin, then Placebo, then Exenatide, then Exenatide ER

Placebo, then Exenatide, then Saxagliptin, then Exenatide ER

Placebo, then Saxagliptin, then Exenatide, then Exenatide ER

Arm Description

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks

Outcomes

Primary Outcome Measures

Monocyte NfkB Levels as Detected by Western Blotting
Monocyte NfkB p65 arbitrary units are quantified by densitometric analysis of the Western blots.
Monocyte NfkB Levels as Detected by Western Blotting
Monocyte NfkB p65 arbitrary units are quantified by densitometric analysis of the Western blots.

Secondary Outcome Measures

Triglycerides
triglycerides
Triglycerides
triglycerides
Triglycerides
triglycerides
Triglycerides
triglycerides
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Free Fatty Acids
Peak Forearm Blood Flow
Peak forearm blood flow via strain gauge venous occlusion plethysmography
Peak Forearm Blood Flow
Peak forearm blood flow via strain gauge venous occlusion plethysmography
Peak Forearm Blood Flow
Peak forearm blood flow via strain gauge venous occlusion plethysmography

Full Information

First Posted
April 1, 2014
Last Updated
June 1, 2018
Sponsor
The University of Texas Health Science Center, Houston
Collaborators
The Center for Clinical and Translational Sciences (CCTS) Clinical Research Unit at The University of Texas Health Science Center at Houston
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1. Study Identification

Unique Protocol Identification Number
NCT02104739
Brief Title
Effects of Antidiabetic Medications on the Postprandial State in Prediabetes
Official Title
Comparative Effects of Antidiabetic Medications on Postprandial Hyperlipidemia, Free Fatty Acid Signaling, and Endothelial Dysfunction in Individuals With Prediabetes
Study Type
Interventional

2. Study Status

Record Verification Date
June 2018
Overall Recruitment Status
Completed
Study Start Date
April 2014 (Actual)
Primary Completion Date
March 2017 (Actual)
Study Completion Date
March 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
The University of Texas Health Science Center, Houston
Collaborators
The Center for Clinical and Translational Sciences (CCTS) Clinical Research Unit at The University of Texas Health Science Center at Houston

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Product Manufactured in and Exported from the U.S.
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
This project addresses cardiovascular disease risk in patients with prediabetes. Levels of lipids after eating a meal ("postprandial lipids") are strong independent predictors of cardiovascular risk. Newer anti-diabetic agents - exenatide and saxagliptin - impact lipid metabolism. These medications will be studied for their effect in reducing both postprandial lipid levels and arterial dysfunction.
Detailed Description
It is a paradox that medical efforts to control blood glucose in type 2 diabetes mellitus have not decreased the risk of cardiovascular disease. Postprandial lipid concentrations are a strong predictor of cardiovascular risk, independent of traditional cardiovascular risk factors. The new classes of antidiabetic medications - GLP-1 agonists and DPP-IV inhibitors - affect lipid as well as glucose metabolism. This study will investigate the efficacy of these medications in reducing postprandial hyperlipidemia, disrupting the concurrent proinflammatory free fatty acid signaling, and ameliorating endothelial dysfunction in individuals with prediabetes. This will consist of a single center, randomized, crossover, placebo-controlled double-blinded prospective trial involving three study arms representing the aforementioned medications: exenatide (GLP-1 agonist), saxagliptin (DPP-IV inhibitor), and placebo (control arm). Each subject will participate in each of the three arms, which are three separate, daylong outpatient studies. For each study arm, subjects will eat a standardized atherogenic high-fat test lunch. Venous blood draws and measurements of forearm blood flow will be done prior to the meal and periodically during a 6-hour period after the meal. Forearm blood flow measurements will assess for changes in endothelial function. The blood will be analyzed for multiple markers of hyperlipidemia and free fatty acid signaling. After completing the three randomized study visits, subjects are invited to participate in an optional, nonrandomized extension study. For the extension study, subjects will take exenatide ER (extended-release exenatide) weekly for total of six weeks. Then subjects return to eat a standardized atherogenic high-fat test lunch. Venous blood draws and measurements of forearm blood flow will be done prior to the meal and periodically during a 4-hour period after the meal, for the same analyses described before. The results will provide new insights into the anti-inflammatory effects of multiple antidiabetic medications via the mechanisms of postprandial hyperlipidemia, free fatty acid signaling, and endothelial function in prediabetic individuals.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Prediabetes, Obesity
Keywords
prediabetes, diabetes mellitus type 2, exenatide, saxagliptin, exenatide ER

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 4
Interventional Study Model
Crossover Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Masking Description
Placebo pills and placebo injections provided
Allocation
Randomized
Enrollment
21 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Exenatide, then Saxagliptin, then Placebo
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Exenatide, then Placebo, then Saxagliptin
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Saxagliptin, then Exenatide, then Placebo
Arm Type
Placebo Comparator
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Saxagliptin, then Placebo, then Exenatide
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Placebo, then Exenatide, then Saxagliptin
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Placebo, then Saxagliptin, then Exenatide
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablets and Placebo (normal saline) injections
Arm Title
Exenatide, then Saxagliptin, then Placebo, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Arm Title
Exenatide, then Placebo, then Saxagliptin, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Arm Title
Saxagliptin, then Exenatide, then Placebo, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Arm Title
Saxagliptin, then Placebo, then Exenatide, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Arm Title
Placebo, then Exenatide, then Saxagliptin, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Arm Title
Placebo, then Saxagliptin, then Exenatide, then Exenatide ER
Arm Type
Experimental
Arm Description
Exenatide Single subcutaneous injection (10 mcg); Saxagliptin Single dose orally (5 mg); Placebo tablet and Placebo (normal saline) injection; Subcutaneous injection (2mg) weekly for 6 weeks
Intervention Type
Drug
Intervention Name(s)
Exenatide
Other Intervention Name(s)
Byetta
Intervention Description
Single subcutaneous injection (10 mcg)
Intervention Type
Drug
Intervention Name(s)
Saxagliptin
Other Intervention Name(s)
Onglyza
Intervention Description
Single dose orally (5 mg)
Intervention Type
Drug
Intervention Name(s)
Exenatide extended-release (ER)
Other Intervention Name(s)
Bydureon
Intervention Description
Subcutaneous injection (2mg) weekly for 6 weeks
Intervention Type
Other
Intervention Name(s)
Placebo
Intervention Description
Placebo tablets and Placebo (normal saline) injections
Primary Outcome Measure Information:
Title
Monocyte NfkB Levels as Detected by Western Blotting
Description
Monocyte NfkB p65 arbitrary units are quantified by densitometric analysis of the Western blots.
Time Frame
baseline
Title
Monocyte NfkB Levels as Detected by Western Blotting
Description
Monocyte NfkB p65 arbitrary units are quantified by densitometric analysis of the Western blots.
Time Frame
2 hours after ingestion of meal
Secondary Outcome Measure Information:
Title
Triglycerides
Description
triglycerides
Time Frame
baseline
Title
Triglycerides
Description
triglycerides
Time Frame
2 hours after ingestion of meal
Title
Triglycerides
Description
triglycerides
Time Frame
4 hours after ingestion of meal
Title
Triglycerides
Description
triglycerides
Time Frame
6 hours after ingestion of meal
Title
Free Fatty Acids
Description
Free Fatty Acids
Time Frame
baseline
Title
Free Fatty Acids
Description
Free Fatty Acids
Time Frame
2 hours after meal
Title
Free Fatty Acids
Description
Free Fatty Acids
Time Frame
4 hours after meal
Title
Free Fatty Acids
Description
Free Fatty Acids
Time Frame
6 hours after meal
Title
Peak Forearm Blood Flow
Description
Peak forearm blood flow via strain gauge venous occlusion plethysmography
Time Frame
baseline
Title
Peak Forearm Blood Flow
Description
Peak forearm blood flow via strain gauge venous occlusion plethysmography
Time Frame
3 hours after meal
Title
Peak Forearm Blood Flow
Description
Peak forearm blood flow via strain gauge venous occlusion plethysmography
Time Frame
6 hours after meal

10. Eligibility

Sex
All
Minimum Age & Unit of Time
30 Years
Maximum Age & Unit of Time
70 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Diagnosis of Prediabetes - defined as either impaired fasting glucose (fasting glucose of 100-125 mg/dL), impaired glucose tolerance (2-hour postprandial blood glucose of 140-199 mg/dL after 75 gram oral glucose challenge), and/or a hemoglobin A1C ranging from 5.7% to 6.4% Subjects are allowed, but not required, to be on statins, ACE-inhibitors, beta-blockers, angiotensin-receptor blockers, thiazide diuretics, and/or loop diuretics at doses that have been stable for at least the last 3 months BMI between 30-35 kg/m2 (±1 kg/m2) Body weight has been stable (±4-5 pounds) over the prior three months. Women of childbearing age must agree to use an acceptable method of pregnancy prevention (barrier methods, abstinence, or surgical sterilization) for the duration of the study Patients must have the following laboratory values: Hematocrit ≥ 34 vol% S. creatinine < 1.5 mg/dl in men and 1.4 mg/dl in women AST (SGOT) < 2.5 times ULN, ALT (SGPT) < 2.5 times ULN, alkaline phosphatase< 2.5 times ULN Exclusion Criteria: History of Type 1 or Type 2 diabetes mellitus History of diabetic ketoacidosis or hyperosmolar nonketotic coma Pregnant or breastfeeding women Patients must not be receiving lipid-lowering medications other than statins within the last 3 months Patient must not be receiving metformin, DPP-IV inhibitors, GLP-1 agonists, thiazolidinediones, insulin, sulfonylureas, acarbose, SGLT-2 inhibitors, corticosteroids, or immunosuppressive therapy within the last 3 months and cannot take them for the duration of the study. Patient must not be receiving NSAIDS or antioxidant vitamins within the last 1 week, and cannot take them for the duration of the study. Patients must not be on hormone replacement therapy. Patients with diabetic gastroparesis Patients with current tobacco use Patients with active malignancy Patients with history of urinary bladder cancer Patients with dietary restrictions precluding a high-fat meal Patients with a history of clinically significant heart disease (NYHA III or IV; more than non- specific ST-T wave changes on the EKG), peripheral vascular disease (history of claudication), or pulmonary disease (dyspnea on exertion of one flight or less; abnormal breath sounds on auscultation) will not be studied Subjects with a history of any serious hypersensitivity reaction to the study medications Prisoners or subjects who are involuntarily incarcerated Subjects who are compulsorily detained for treatment of either a psychiatric or physical (e.g., infectious disease) illness Subjects with known allergic reactions to the study medications or test meal Subjects unwilling or unable to provide informed consent Subjects determined by the investigator(s) to not be appropriate candidates for the study
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Absalaon D Gutierrez, MD
Organizational Affiliation
University of Texas Health Science Center at Houston, Dept. of Medicine
Official's Role
Principal Investigator
Facility Information:
Facility Name
The University of Texas Health Science Center at Houston
City
Houston
State/Province
Texas
ZIP/Postal Code
77030
Country
United States

12. IPD Sharing Statement

Citations:
PubMed Identifier
32228379
Citation
Hamidi V, Riggs K, Zhu L, Bermudez Saint Andre K, Westby C, Coverdale S, Dursteler A, Wang H, Miller Iii C, Taegtmeyer H, Gutierrez AD. Acute Exenatide Therapy Attenuates Postprandial Vasodilation in Humans with Prediabetes: A Randomized Controlled Trial. Metab Syndr Relat Disord. 2020 Jun;18(5):225-233. doi: 10.1089/met.2019.0102. Epub 2020 Mar 31.
Results Reference
derived

Learn more about this trial

Effects of Antidiabetic Medications on the Postprandial State in Prediabetes

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