The Effect of Insulin Glulisine Compared With Insulin Aspart on Breakfast Post Prandial Glucose Levels in Prepubertal Children

This is a treatment, open label, crossover study comparing two and four hour breakfast post prandial blood glucose levels after receiving a dose of insulin glulisine or insulin aspart administered subcutaneously and consuming the breakfast meal from a prescribed menu containing 45, 60 or 75 grams of carbohydrate. Each subject will receive insulin glulisine for ten days and insulin aspart for ten days.

Inclusion criteria

• current patient in the Helen DeVos Children's Hospital Diabetes Clinic;
• ages 4-11 years;
• prepubertal (Tanner Stage I);
• diagnosed with type 1 diabetes mellitus with positive islet cell antibodies or presenting at time of diagnosis with positive serum or urine ketones and requiring insulin since diagnosis;
• at least six months from date of diagnosis of type 1 diabetes mellitus;
• TSH within reference range and negative transglutaminase IgA antibodies within nine months of study start;
• HbA1C between 6.9 and 10% within 30 days of study start; parent or guardian able and willing to provide written informed consent prior to enrollment;
• at time of study start, current insulin regimen includes multiple daily injections with insulin glargine as the basal insulin and insulin aspart or insulin lispro as the pre-meal rapid acting insulin

Exclusion criteria

• pubertal (Tanner stage 2 or greater);
• concurrent Addison's disease, celiac disease or untreated hypothyroidism; - receiving oral, injectable or inhaled steroids or immunosuppressant medications;
• receiving stimulants for treatment of attention deficit disorder or attention deficit hyperactivity disorder;
• intercurrent illnesses such as a fever > 101 degrees F, infection, or gastroenteritis;
• use of any medication to treat diabetes other than those listed under in inclusion criteria;
• potential for lack of compliance or any other issue which, in the opinion of the investigator, would compromise the subject's safety or successful participation in the study