Individuals with type 2 diabetes mellitus (T2DM) are at increased risk for cardiovascular events (for example, heart attack) and the risk is related to one's overall control of blood glucose levels. In this study the investigators will measure the effects of saxagliptin, compared to placebo, before, during, and after coronary artery bypass graft (CABG) surgery. The investigators will use samples of the patients' blood and tissue to measure and evaluate indicators of the body's response to the treatment. This study is being done to evaluate the effect of saxagliptin on biomarkers of the heart to help us understand whether reducing or controlling a person's blood glucose levels during and after CABG surgery will produce better clinical outcomes (for example, better heart health).
This study is a randomized, double-blind, placebo-controlled clinical trial to evaluate the effect of saxagliptin on cardiac biomarkers of myocardial necrosis, cardiac function, inflammation, and apoptosis in subjects with Type 2 diabetes mellitus (T2DM) undergoing CABG surgery (on pump, via a median sternotomy approach) as an integrated measure of the potential mechanistic effects of saxagliptin on prevention of cardiovascular (CV) outcomes. Approximately 74 subjects will be randomized and complete the study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Masking
TRIPLE
Enrollment
12
one 5-mg saxagliptin tablet daily
5mg placebo tablet daily
Cardiology, PC
Birmingham, Alabama, United States
Cardio-Thoracic Surgeons PC
Birmingham, Alabama, United States
Heart Center Research, LLC
Huntsville, Alabama, United States
Sparks Regional Medical Center
Fort Smith, Arkansas, United States
Arkansas Cardiology, PA
Little Rock, Arkansas, United States
Stanford University Medical Center
Palo Alto, California, United States
Emory University Hospital Midtown
Atlanta, Georgia, United States
Duke University Medical Center (DUMC)
Durham, North Carolina, United States
Chippenham Medical Center
Richmond, Virginia, United States
Charleston Area Medical Center (CAMC)
Charleston, West Virginia, United States
Troponin I (TnI) Area Under the Curve (AUC)
Time frame: pre-CABG surgery (after 5 to 7 days of assigned treatment, predischarge or 5 days post-CABG surgery (Approximately 12 days)
High Sensitive Troponin-I (hsTnT) Area Under the Curve
Time frame: pre-CABG surgery (after 5 to 7 days of assigned treatment, predischarge or 5 days post-CABG surgery (Approximately 12 days)
Creatine Kinase-Myocardial Bands (CK-MB) Area Under the Curve
Time frame: pre-CABG surgery (after 5 to 7 days of assigned treatment, predischarge or 5 days post-CABG surgery (Approximately 12 days)
Number of Major Adverse Cardiac Events (MACE)
Death, myocardial infarction (MI), or New congestive heart failure (CHF)
Time frame: Baseline to end of study (Approximately 35-37 days)
Duration of Inotropic Support
Time frame: CABG surg until hosp discharge (Approximately 5 days)
Number of Participants Who Had an Episode of Hypoglycemia
Time frame: baseline to end of study (Approximately 35-37 days)
Number of Participants Who Required Intraaortic Balloon Pump (IABP) Support
Time frame: CABG to hospital discharge (Approximately 5 days)
Need for Antiarrhythmic Therapy
Time frame: CABG surg to hospital discharge Approximately 5 days
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