About this trial
Iatrogenic hypoglycemia is still considered to be the number one barrier to effective glycemic control in patients with type 1 diabetes (T1D). In a previous study, it was observed in people without diabetes that fasting can be detrimental to the hormonal and hepatic responses to insulin-induced hypoglycemia. In the experiments described herein, the impact fasting has on hypoglycemic counterregulation in people with T1D will be determined.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
males and females of any race or ethnicity
non-obese (BMI < or = to 30)
have a diagnosis of type 1 diabetes
C-peptide negative
Disqualifiers
pregnant women
cigarette smoking
Taking inflammation-targeting steroids (e.g., prednisone).
Taking medications targeting adrenergic signaling (e.g., beta-blockers, bronchodilators).
Trial design
Crossover
Treatments tested in this trial
Fasting
Other interventionSubjects remain fasted prior to insulin-induced hypoglycemia.
Feeding
Other interventionSubjects eat a normal breakfast and lunch prior to insulin-induced hypoglycemia.
Treatment groups
Trial outcomes
Primary outcomes
Glucagon
From plasma
Hepatic glucose production
From plasma
Glucose infusion rate
Amount of glucose required to maintain glycemia at \~55 mg/dL.
Secondary outcomes
Epinephrine
From plasma
Peripheral glucose uptake
From plasma
Other outcomes
Cortisol
From plasma
Growth Hormone
From plasma
Sponsors and contacts
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