Proinsulin secretion during the first 3 years after diagnosis in diabetic patients with and without islet cell antibodies
OBJECTIVE - To evaluate proinsulin secretion in different types of NIDDM. RESEARCH DESIGN AND METHODS - Proinsulin and insulin were evaluated at diagnosis of diabetes and 3 years later (fasting and after stimulation with intravenous glucose and glucagon) in 10 NIDDM patients without islet cell antibodies (ICAs) at diagnosis (age 52 ± 4 years), 11 NIDDM patients with ICAs at diagnosis (age 50 ± 5 y
