Closed-loop Control of Glucose Levels (Artificial Pancreas) for 24 Hours in Adults With Type 2 Diabetes Under Intensive Insulin Therapy

Subjects will be admitted at the research clinical facility at 20:00. A cannula will be inserted into an arm or a hand vein for blood sampling purposes. The subjects will carry on with their normal insulin therapy. Two periods of walking of 15 minutes will be performed at 10:00 and 15:00. Meals will be served at 8:00, 12:00 and 17:00. The CHO content of meals will be adapted to subject's usual CHO intake. Venous blood samples (4 ml each) will be obtained for the measurement of the plasma glucose and insulin. Plasma glucagon and C-peptide will be measured every hour. Blood samples will be drawn every 20 minutes.

Subjects will be admitted at the research clinical facility at 20:00. A cannula will be inserted into an arm or a hand vein for blood sampling purposes. A cartridge containing subject's usual fast acting insulin analog will be placed in the insulin pump. Closed-loop strategy will start at 21:00 until 21:00 the next day. Neither basal nor prandial insulin injections will be given. Two periods of walking of 15 minutes will be performed at 10:00 and 15:00. Meals will be served at 8:00, 12:00 and 17:00. The CHO content of meals will be adapted to subject's usual CHO intake. Venous blood samples (4 ml each) will be obtained for the measurement of the plasma glucose and insulin. Plasma glucagon and C-peptide will be measured every hour. Blood samples will be drawn every 20 minutes.

Subject's usual insulin analog will be used.

During closed-loop intervention, the Accu-Chek Combo (Roche) insulin pump will be used

In both visits, glucose levels will be measure with the Dexcom G4 Platinum (Dexcom)