Clinical Trials

Inclusion Criteria;

• Age > 25 or < 65 years.
• HbA1c ≥ 8.5%.
• BMI ≤ 28 Kg/M^2 (for lean participants).
• BMI ≥ 25 Kg/M^2 (for obese participants).
• Use of diet, sulfonylureas or metformin only (for T2DM participants).
• For female subjects: negative pregnancy test at the time of enrollment and study.
• No history of prior upper abdominal surgery such as adjustable gastric banding, pyloroplasty and vagotomy.
• No active systemic illness or malignancy.
• No symptomatic macrovascular or microvascular disease.
• No contraindications to MRI (e.g., metal implants, claustrophobia).
• Hematocrit > 35%.
• TSH > 0.4 or < 5.5.
• Consumption of < 2 alcohol drinks per day or < 14 per week or a negative AUDIT questionnaire.
• No allergy to iodine.

Exclusion Criteria:

• Age < 25 or > 65 years (to avoid studying subjects who could have latent type 1 diabetes, or the effects of age extremes in subjects with normal or impaired fasting glucose).
• HbA1c ≥ 8.5%.
• BMI ≤ 28 Kg/M^2.
• Use of insulin or agents other than sulfonylureas or metformin.
• For female subjects: positive pregnancy test at the time of enrollment or study.
• History of prior upper abdominal surgery such as adjustable gastric banding, pyloroplasty and vagotomy.
• Active systemic illness or malignancy.
• Symptomatic macrovascular or microvascular disease.
• Contraindications to MRI (e.g., metal implants, claustrophobia).
• Hematocrit < 35%.
• TSH < 0.4 or > 5.5.
• Consumption of > 2 alcohol drinks per day or > 14 per week or a positive AUDIT questionnaire.
• Allergy to iodine.

Eligibility last updated 1/6/22. Questions regarding updates should be directed to the study team contact.