Molecular Regulation of Muscle Glucose Metabolism

  • Study type:

    Interventional What is this?

    Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.

Study IDs

  • Site IRB:

    • Scottsdale/Phoenix, Arizona: 11-004005
  • NCT ID:

    NCT01581736
  • Sponsor Protocol Number:

    11-004005

About this study

This protocol is being conducted to determine the mechanisms responsible for insulin resistance, obesity and type 2 diabetes.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  1. Subjects must be able to communicate meaningfully with the investigator and must be legally competent to provide written informed consent.
  2. Subjects may be of either sex, age as described in each protocol. Female subjects must be non-lactating and must either be at least two years post-menopausal, (if diabetic or obese) or be using adequate contraceptive precautions (i.e. oral contraceptives, approved hormonal implant, intrauterine device, diaphragm with spermicide, condom with spermicide), or be surgically sterilized (i.e. bilateral tubal ligation, bilateral oophorectomy). Female patients (except for those patients who have undergone a hysterectomy or bilateral oophorectomy) are eligible only if they have a negative pregnancy test throughout the study period.
  3. Subjects must range in age as described in each specific protocol.
  4. All nondiabetic subjects must have normal oral glucose tolerance.
  5. Subjects must have the following laboratory values:
    • Hematocrit ≥ 35 vol%
    • Serum creatinine ≤ 1.6 mg/dl
    • AST (SGOT) < 2 times upper limit of normal
    • ALT (SGPT) < 2 times upper limit of normal
    • Alkaline phosphatase < 2 times upper limit of normal
    • Triglycerides < 150 mg/dl.
    • PT 11.7 -14.3 (During Liposyn/heparin infusion, PT will be determined to insure that it is < 1.5-2.0 times the normal value.)
    • PTT 23.0-37.0.

Exclusion Criteria:

  1. Subjects must not be receiving any of the following medications: thiazide or furosemide diuretics, beta-blockers, or other chronic medications with known adverse effects on glucose tolerance levels unless the patient has been on stable dose of such agents for the past three months before entry into the study. Subjects may be taking a stable dose of estrogens or other hormonal replacement therapy, if the subject has been on these agents for the prior three months. Subjects taking systemic glucocorticoids are excluded.
  2. Subjects with a history of clinically significant heart disease (New York Heart Classification greater than grade II; 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.
  3. Recent systemic or pulmonary embolus, untreated high-risk proliferative retinopathy, recent retinal hemorrhage, uncontrolled hypertension, systolic BP > 180, diastolic BP > 105, autonomic neuropathy, resting heart rate > 100, electrolyte abnormalities.

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

Lawrence Mandarino, Ph.D.

Open for enrollment

Jennifer Early R.N.

(480)301-4142

Early.Jennifer@mayo.edu